CN202650744U

CN202650744U - Resistance

Info

Publication number: CN202650744U
Application number: CN 201220278605
Authority: CN
Inventors: 廖进忠
Original assignee: SHUANGYU ELECTRONIC (SHENZHEN) CO Ltd; Taiwan FUTABA Electronics Corp
Current assignee: SHUANGYU ELECTRONIC (SHENZHEN) CO Ltd; Taiwan FUTABA Electronics Corp
Priority date: 2012-06-13
Filing date: 2012-06-13
Publication date: 2013-01-02
Anticipated expiration: 2022-06-13

Abstract

Resistance comprises a fuse, a tube-shaped body, a resistance winding wire, two metal outer covers, a first wire and a second wire. The tube-shaped body wraps the fuse, the two metal outer covers are respectively arranged at two ends of the tube-shaped body, the resistance winding wire winds outside the tube-shaped body, and the two ends of the winding wire are respectively fixed outside the two metal outer covers. The fuse comprises a ceramic column body, a fusible alloying metal layer, two electric conducting covers and a fuse wire. The metal layer wraps outside the ceramic column body, the two electric conducting covers are respectively arranged at the two ends of the ceramic column body, the fuse wire is connected with one electric cover at one end of the ceramic column body, and the fuse wire penetrates through a through hole in the metal outer cover and fixedly connected outside the metal outer cover. The first wire, relative to the end where the fuse wire is connected, is connected with the electric conducting cover at the other end of the ceramic column body. The first wire penetrates through the through hole of the metal outer cover and extends outward. The second wire is arranged on the same side of the extending direction of the first wire. One end of the second wire is fixed outside the metal outer cover where the first wire penetrates.

Description

Resistance

Technical field

The utility model relates to a kind of resistance, and particularly interior down enters a kind of Thermal Cutoffs of tool high temperature fusible metal alloy/or the resistance of the Thermal Cutoffs of general self-melt.

Background technology

Resistance is electronics industry passive component commonly used, and almost various machine plates all need to adjust curtage with resistance.

Usually excessive in order to prevent circuit load, just need to utilize fuse/or serviceability temperature type fuse melt deenergizing.Yet, the resistance of these two kinds of fuses very little (leveling off to 0), therefore often circuit design need to add the design of resistance aside.Yet thus, will increase design and manufacturing cost.

Resistor and fuse/or Thermal Cutoffs on material and structure, itself similarity is just arranged, and the temperature mode fuse-resistor has both the function of the two, can be used as at ordinary times resistor in the loop for starting or continuous load is used, as for short circuit produces, namely produce fusing around resistive conductor outside then.In case when continuous current is unusual, be used for protecting machinery equipment with regard to what bring into play its Thermal Cutoffs.Yet, present fuse-resistor, the especially complex process of temperature-sensitive fuse-resistor, and heat resisting temperature is not high enough, can't melt disconnected fuse, will cause the machine plate to burn out.

The utility model content

Main purpose of the present utility model provides a kind of resistance, the resistance of the Thermal Cutoffs of especially a kind of tool high temperature/low temperature fusing.

Another main purpose of the present utility model provides the resistance of a kind of tool high temperature/low temperature fuse wire, and its hot melting temperature reaches as high as 260 degrees centigrade.

For reaching above-mentioned purpose, the utility model provides a kind of resistance, and this resistance comprises:

One fuse, it comprises:

One ceramic cylinder;

One fusible metal alloy metal level, this fusible metal alloy metal level are coated on this pottery cylinder;

Two conductive cap lay respectively at the two ends of this pottery cylinder; And

One fuse wire, it is connected to the wherein conductive cap of an end of this pottery cylinder;

One tubular body, this fuse is positioned within this tubular body, and this fuse wire exposes;

Two metal enclosing covers, it lays respectively at the two ends of this tubular body, and each metal enclosing cover has a perforation, and this fuse wire penetrated the perforation of a metal enclosing cover wherein, and this fuse wire is affixed to outside its metal enclosing cover that penetrated;

The coiling of one resistance, its spiral winding are outside this tubular body, and the two ends of this resistance coiling are separately fixed at outside the two metal enclosing covers;

One first wire, it is connected to the conductive cap of this pottery cylinder other end, and this first wire penetrated the perforation of another metal enclosing cover; And

One second wire, it is positioned at the homonymy with this first wire bearing of trend, and an end of this second wire is fixed on outside the metal enclosing cover that this first wire penetrated.

Above-mentioned resistance, wherein this fusible metal alloy metal level has at least one complete cutting groove, with the storage area that flows when the high temperature melt as the fusible metal alloy metal level.

Above-mentioned resistance, wherein this resistance also comprises an encapsulated layer, this encapsulated layer is coated on outside this tubular body and this two metals enclosing cover.

Above-mentioned resistance, wherein this fuse is the high temperature fuse, hot melting temperature reaches 260 degrees centigrade.

Below in conjunction with the drawings and specific embodiments the utility model is described in detail, but not as to restriction of the present utility model.

Description of drawings

Fig. 1-Fig. 4 is resistance assembling exploded view of the present utility model; And

Fig. 5 is the schematic diagram that resistance of the present utility model is finished encapsulation.

The primary clustering symbol description:

Fuse 20 tubular bodies 11

Resistance wind the line 30

metal enclosing cover

12a, 12b

The first wire 40 second wires 50

Pottery cylinder 21 fusible metal alloy metal levels 22

Conductive cap

22a, 22b fuse wire 23a

Perforation

120a, 120b pad A, B, C, D

Encapsulated layer 60

Embodiment

For above-mentioned and other objects, features and advantages of the present utility model can be become apparent, cited below particularlyly go out specific embodiment of the utility model, and cooperate accompanying drawing, be described in detail below.

Please refer to Fig. 1, the resistance that the utility model provides comprises a fuse 20.Fuse 20 comprises a ceramic cylinder 21, a fusible metal alloy metal level 22 and two conductive cap 22a and 22b.Fusible metal alloy metal level 22 is coated on outside the ceramic cylinder 21, and two

conductive cap

22a and 22b lay respectively at the two ends of ceramic cylinder 21.In preferred embodiment, in order to allow fuse 20 when the high temperature, reach the function that opens circuit, being necessary to allow fusible metal alloy metal level 22 flow to produce opens circuit, therefore fusible metal alloy metal level 22 tin normally, and the cutting groove (figure as shown in Figure 1) with at least one above complete cycle is with the ceramic cylinder 21 of exposed portions serve.Thus, when high temperature, fusible metal alloy metal level 22 produces and flows, and will flow to the cutting groove, and the end formation of fuse 20 is opened circuit, and can reach and melt disconnected purpose.In the present embodiment, fuse 20 is the temperature-sensitive fuse, and hot melting temperature reaches as high as 260 degrees centigrade.

The two ends of fuse 20 are connected with wire, and one is the connecting pin (terminal, the first wire) 40 as resistance, and another is as the wire of fuse 20 (fuse wire) 23a.Fuse wire 23a and the first wire 40 are fastened on respectively two

conductive cap

22a and 22b suitably locates.

Please refer to Fig. 2, fuse 20 is to be positioned within the tubular body 11, two

metal enclosing cover

12a and 12b lay respectively at the two ends of tubular body 11, and the first wire 40 and fuse wire 23a penetrated respectively the perforation 120a of

metal enclosing cover

12a and 12b and 120b and expose.

Please refer to Fig. 3, resistance winds the line 30 spiral windings outside tubular body 11, and the two ends of resistance coiling 30 are separately fixed at outside two metal enclosing cover 12a and the 12b.For example, as shown in Figure 3, the two ends of resistance coiling 30 are to be weldingly fixed on the A point of metal enclosing cover 12a and the B point of metal enclosing cover 12b.

Please refer to Fig. 4, fuse wire 23a penetrated the perforation 120a of metal enclosing cover 12a and was fixed to outside its metal enclosing cover 12a that penetrated, for example the C of metal enclosing cover 12a point.One second wire 50 is positioned at the homonymy with the first wire 40 bearing of trends, and an end of this second wire 50 is fixed on outside the metal enclosing cover 12b that the first wire 40 penetrated, for example the D of metal enclosing cover 12b point.

Even more preferably, resistance of the present utility model also comprises an encapsulated layer 60, and this encapsulated layer 60 is coated on outside tubular body 11 and two metal enclosing cover 12a and the 12b.The first wire 40 and the second wire 50 are exactly the connecting pin (terminals) of resistance, excessive when load, when temperature raise, the fusible metal alloy metal level (tin) 22 of fuse 20 melted and flows to the cutting groove and form and open circuit, thus, just can avoid whole machine plate damage.

Certainly; the utility model also can have other various embodiments; in the situation that do not deviate from the utility model spirit and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the utility model, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the utility model.

Claims

1. a resistance is characterized in that, this resistance comprises:

One fuse, it comprises:

One ceramic cylinder;

2. resistance as claimed in claim 1 is characterized in that, this fusible metal alloy metal level has at least one complete cutting groove, with the storage area that flows when the high temperature melt as the fusible metal alloy metal level.

3. resistance as claimed in claim 1 or 2 is characterized in that, this resistance also comprises an encapsulated layer, and this encapsulated layer is coated on outside this tubular body and this two metals enclosing cover.

4. resistance as claimed in claim 1 or 2 is characterized in that, this fuse is the high temperature fuse, and hot melting temperature reaches 260 degrees centigrade.