CN213183806U

CN213183806U - Self-protection resistor

Info

Publication number: CN213183806U
Application number: CN202022307561.XU
Authority: CN
Inventors: 范宏
Original assignee: Chengdu Chenghong Electromechanical Co ltd
Current assignee: Chengdu Chenghong Electromechanical Co ltd
Priority date: 2020-10-16
Filing date: 2020-10-16
Publication date: 2021-05-11
Anticipated expiration: 2030-10-16

Abstract

The utility model discloses a self preservation protects resistor, including base member, resistance wire, first conductive ring, the conductive ring of second, first connector and second connector, first connector is connected with first conductive ring, and the conductive ring of second connector and second is connected, self preservation protects resistor still includes fuse and the conductive ring of third, and the base member includes the interlude and connects the end at the interlude both ends respectively, and the diameter of interlude is less than the diameter of both ends head, is provided with first recess between interlude and the one end, and is provided with the second recess between another end, and the middle part of interlude is provided with the third recess. The utility model discloses resistance wire and resistance circle position are stable, do not exist and shift to reduce the firm defect of installation department, can protect other electronic component in the circuit.

Description

Self-protection resistor

Technical Field

The utility model relates to an electronic component field, in particular to resistor that self preservation protected.

Background

The traditional wound resistor on the market is to wind the resistance wire on the base member, respectively links up a conductive loop of cover on the base member at the both ends of resistance wire, and conductive loop passes through the screw or fixes on ceramic base member with the form of staple bolt, and such connected mode has the unstable problem of connection, can not protect by oneself moreover, has the potential safety hazard.

On the other hand, with the rapid development of the electronic industry and the popularization of the Surface Mount Technology (SMT), the demand for surface mount electronic components is increasing, and the resistor is the same, and at present, there is a surface mount chip resistor in China, and there is no lead wire, and silver plating is used as the terminal electrode at both ends, but with high cost, because the resistance film layer area of the chip structure is smaller, the power of the resistor is just small, the resistance range is also narrow, the precision is low, the work is unstable, and the demand for the development of high-end electronic products cannot be adapted.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a resistor that self preservation protected, this self preservation protect the resistor resistance wire and resistance circle position stability, do not exist and shift to reduce the firm defect of installation department, can protect other electronic component in the circuit.

The technical scheme is as follows: a self-protection resistor comprises a base body, a resistance wire, a first conductive ring, a second conductive ring, a first connector and a second connector, wherein the first connector is connected with the first conductive ring; the resistance wire is wound on the surface of the second middle section, one end of the resistance wire is connected with the third conductive ring, and the other end of the resistance wire is connected with the second conductive ring; one end of the fuse is connected with the third conductive ring, and the other end of the fuse is connected with the first conductive ring.

Preferably, the substrate is a ceramic substrate.

When adopting the ceramic base member, the ceramic base member not only can not produce magnetic field, but also has high temperature resistant and fast characteristics of heat dissipation, when it with the utility model discloses when combining, can greatly reduced resistance surface temperature rise and improve the temperature curve to improve whole life.

Preferably, the resistance wire is made of a constantan wire material or a manganese copper wire material.

Preferably, the resistance wire comprises a resistance wire body layer and an insulating layer coated on the resistance wire body layer.

Preferably, a heat dissipation layer is further arranged between the resistance wire body layer and the insulating layer.

Preferably, the self-protection resistor further comprises a plastic package shell, the base body is plastically packaged in the plastic package shell, and the outer ends of the first connector and the second connector are led out of the plastic package shell.

Preferably, the tail end sections of the first connector and the second connector are horizontal straight line sections parallel to the plastic package shell.

Compared with the prior art, the beneficial effects of the utility model reside in that:

the utility model discloses resistance wire and resistance circle position are stable, do not exist and shift to reduce the firm defect of installation department, can protect other electronic component in the circuit, and can be used for the subsides dress.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the base structure of the present invention;

FIG. 3 is a schematic view of the resistance wire structure of the present invention;

in FIGS. 1-3: the plastic packaging structure comprises a base body 1, a first middle section 2, a second middle section 3, a first groove 4, a third groove 5, a second groove 6, a resistance wire 7, a fuse 8, a first conductive ring 9, a third conductive ring 10, a second conductive ring 11, a second connector 12, a first connector 13, a plastic packaging shell 14, a resistance wire body layer 15, a heat dissipation layer 16, an insulating layer 17 and a middle section 18.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inner", "outer", "front", "rear", "top", "bottom", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and the terms are only for convenience of description of the present invention and simplifying the description, but do not indicate or imply that the device or element to which the term refers must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should be further noted that, unless otherwise explicitly specified or limited, the terms "disposed," "opened," "mounted," "connected," and "connected" are to be construed broadly, e.g., as either a fixed connection, a detachable connection, or an integral connection; 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 meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-3, fig. 1 is a schematic view of the overall structure of the present invention, fig. 2 is a schematic view of the base structure of the present invention, and fig. 3 is a schematic view of the resistance wire structure of the present invention.

The utility model provides a resistor, including base member 1, resistance wire 7, fuse 8, first conductive loop 9, second conductive loop 11, third conductive loop 10, first connector 13 and second connector 12, base member 1 includes interlude 18 and connects the end at the interlude both ends respectively, the diameter of interlude is less than the diameter of both ends head, be provided with first recess 4 between interlude 18 and the end, and be provided with second recess 6 between the other end, the middle part of interlude 18 is provided with third recess 5, this third recess 5 separates interlude 18 into first interlude 2 and second interlude 3, first conductive loop 9 overlaps on first recess 4, third conductive loop 10 covers on third recess 5, second conductive loop 11 covers on second recess 6.

The resistance wire 7 is wound on the surface of the second middle section 3, one end of the resistance wire is connected with the third conductive ring 10, and the other end of the resistance wire is connected with the second conductive ring 11.

One end of the fuse 8 is connected with the third conductive ring 10, the other end is connected with the first conductive ring 9, the first connector 13 is connected with the first conductive ring 9, and the second connector 12 is connected with the second conductive ring 11.

Through first conductive ring 9 cover on first recess 4, third conductive ring 10 covers on third recess 5, second conductive ring 11 covers on second recess 6 and resistance wire 7 twines on the surface of second interlude 3 and the setting of fuse 8, make resistance wire and resistance ring position stable, do not have the aversion, thereby the defect that the installation department is firm has been reduced, simultaneously because fuse 8 and resistance wire 7 constitute the series connection structure, under the abnormal conditions appears in the circuit, fuse 8 will produce the fusing voluntarily, protect the electrical components in the circuit, thereby reach the effect of protecting other components and parts.

It should be understood that the substrate 1 may be a ceramic substrate or other conventional skeletal substrate, and is not particularly limited herein. When adopting the ceramic base member, the ceramic base member not only can not produce magnetic field, but also has high temperature resistant and fast characteristics of heat dissipation, when it with the utility model discloses when combining, can greatly reduced resistance surface temperature rise and improve the temperature curve to improve whole life.

It is to be understood that the resistance wire 7 may be a commercially available constantan wire or manganese copper wire, and is not particularly limited herein.

Optionally, the resistor further comprises a plastic package housing 14, the base body 1 is plastic-packaged in the plastic package housing 14, and the plastic package housing 14 is led out from the outer ends of the first connector 13 and the second connector 12.

Optionally, in order to reduce the overall space volume of the resistor and facilitate the packaging with the PCB, the end sections of the first connector 13 and the second connector 12 are horizontal straight line segments, and are parallel to the plastic package 14. The arrangement reduces the height of the resistor on one hand, and the mounting area can be changed according to actual requirements on the other hand, so that the mounting is more convenient and firmer.

Optionally, the resistance wire 7 includes a resistance wire body layer 15 and an insulating layer 17 coated on the resistance wire body layer 15, and the insulating layer 17 may be coated on the resistance wire body layer 15 in a coating manner. The insulating layer 17 improves product quality and reduces safety risks.

Optionally, a heat dissipation layer 16 is further disposed between the resistance wire body layer 15 and the insulating layer 17, and during processing, a layer of heat dissipation material is coated on the resistance wire body layer 15, and then the insulating material is coated on the heat dissipation material. The insulating material may be an insulating varnish.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a resistor of self preservation protection, includes base member, resistance wire, first conductive loop, the conductive loop of second, first connector and second connector, and first connector is connected with first conductive loop, and second connector and the conductive loop of second are connected its characterized in that: the self-protection resistor further comprises a fuse wire and a third conductive ring, the substrate comprises a middle section and end heads connected to two ends of the middle section respectively, the diameter of the middle section is smaller than that of the two end heads, a first groove is arranged between the middle section and one end head, a second groove is arranged between the middle section and the other end head, a third groove is arranged in the middle of the middle section, the middle section is divided into a first middle section and a second middle section by the third groove, the first conductive ring is sleeved on the first groove, the third conductive ring is sleeved on the third groove, and the second conductive ring is sleeved on the second groove; the resistance wire is wound on the surface of the second middle section, one end of the resistance wire is connected with the third conductive ring, and the other end of the resistance wire is connected with the second conductive ring; one end of the fuse is connected with the third conductive ring, and the other end of the fuse is connected with the first conductive ring.

2. The self-protected resistor of claim 1, wherein: the substrate is a ceramic substrate.

3. The self-protected resistor of claim 1, wherein: the resistance wire is made of constantan wire materials or manganese copper wire materials.

4. A self-protected resistor according to any of claims 1-3, characterized in that: the resistance wire comprises a resistance wire body layer and an insulating layer coated on the resistance wire body layer.

5. The self-protected resistor of claim 4, wherein: and a heat dissipation layer is also arranged between the resistance wire body layer and the insulating layer.

6. A self-protected resistor according to any of claims 1-3, characterized in that: the self-protection resistor further comprises a plastic package shell, the base body is plastically packaged in the plastic package shell, and the plastic package shell is led out from the outer ends of the first connector and the second connector.

7. The self-protected resistor of claim 6, wherein: and the tail end sections of the first connector and the second connector are horizontal straight line sections parallel to the plastic package shell.