CN102412562A - Motor protector - Google Patents
Motor protector Download PDFInfo
- Publication number
- CN102412562A CN102412562A CN2011103425141A CN201110342514A CN102412562A CN 102412562 A CN102412562 A CN 102412562A CN 2011103425141 A CN2011103425141 A CN 2011103425141A CN 201110342514 A CN201110342514 A CN 201110342514A CN 102412562 A CN102412562 A CN 102412562A
- Authority
- CN
- China
- Prior art keywords
- motor
- base plate
- movable contact
- motor protector
- bimetal leaf
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Abstract
The invention relates to a motor protector, which is suitable for various motors such as a washing machine motor, a stirring machine motor, a dust collector motor, an air compressor motor and the like, and belongs to the technical field of motor protection. The motor protector is mainly characterized in that: a resistor chip is welded between two parts of a base plate which is divided into the two parts, and is connected with double metal sheets to form a series circuit through a static contact and a movable contact; when the current surpasses a set value, the resistor chip instantly gives out super heat; and when the temperature of the double metal sheets reaches a set value, the static contact and the movable contact are separated due to expansion caused by heat and contraction caused by coldness to realize power cut. The motor protector has a temperature protection function and a current protection function and is simple in structure and strong in practicability, and the trip time is between 2 and 10 seconds, so the motor protector is favorable for prolonging the service life of a motor and reducing the using cost of a client.
Description
Technical field
The present invention relates to a kind of motor protector, be applicable to various motor, for example, washing machine motor, mixer motor, duster motor, air compressor motor or the like belong to the motor protection technical field.
Background technology
The prior electric motor protector is made up of metal base plate, break, insulating paper, iron nail, bimetal leaf, movable contact and metal shell; Metal base plate passes metal shell; The one end welding movable contact of bimetal leaf, other end welding iron nail aftershaping; The welding bimetal leaf has an end of iron nail in the metal shell, welds break on the base plate of corresponding movable contact, and insulating paper parcel base plate is encapsulated in the middle of the metal shell.This product only has temperature protection, and current protection is not obvious.When the client used, under the situation of motor operation irregularity, the protector power-off time was about about 30 seconds, motor winding have smolder, phenomenon that plastic cement has fusing, shortened useful life of motor greatly, improved client's use cost.
Summary of the invention
The purpose of this invention is to provide a kind of motor protector, solve existing motor protector and only have temperature protection because of structural factor, the unconspicuous defective of current protection; Thereby motor work occurs when unusual, and is long because of power-off time, is prone to cause that motor winding is smoldered, the phenomenon of plastic cement fusing; The present invention has not only kept the temperature protection function of existing product; But also have current protecting function, have the escape time of realization weak point, the useful life that helps improving motor.
The objective of the invention is to realize that through following technical scheme a kind of motor protector is made up of metal base plate, break, insulating paper, iron nail, bimetal leaf, movable contact and metal shell; Metal base plate passes metal shell, the end welding movable contact of bimetal leaf, other end welding iron nail aftershaping, and the welding bimetal leaf has an end of iron nail in the metal shell; Weld break on the base plate of corresponding movable contact; Insulating paper parcel base plate is encapsulated in the middle of the metal shell, it is characterized in that described metal base plate is made up of two parts at interval; Weld resistor disc between two parts, resistor disc is connected with bimetal leaf through break, movable contact.
Resistor disc adopts nickel chromium triangle sheet, wide 1.0mm～4.0mm, long 6.0mm～12.0mm, thick 0.08～4.0mm, resistance 0.1 Ω/m～10 Ω/m.
The present invention is through welding resistor disc being divided between the two-part base plate; Make resistor disc form series circuit through break, movable contact and bimetal leaf; When electric current exceeds set point; Resistor disc moment is sent superpower heat, when the bimetal leaf temperature reaches set point, break, movable contact is separated realize outage.The present invention has realized not only having temperature protection function, but also has had the function of current protection, and is simple in structure, practical, and the escape time helped improving the useful life of motor at 2～10 seconds, reduces client's use cost.
Description of drawings
Fig. 1 is a sectional structure sketch map of the present invention;
Among the figure, 1 base plate a, 2 breaks, 3 insulating papers, 4 iron nails, 5 bimetal leafs, 6 movable contacts, 7 shells, 8 resistor discs, 9 base plate b.
Embodiment
Further specify the present invention in conjunction with accompanying drawing and embodiment, as shown in Figure 1, the present invention is made up of base plate a 1, break 2, insulating paper 3, iron nail 4, bimetal leaf 5, movable contact 6, shell 7, resistor disc 8 and base plate b 9.The one end welding movable contact 6 of bimetal leaf 5, other end welding iron nail 4 aftershapings; Welding bimetal leaf 5 has an end of iron nail 4 in the shell 7; Welding resistor disc 8 between base plate a1 and the base plate b 9; Break 2 is welded on base plate b9 place, and insulating paper 3 parcel base plate a1 and base plate b9 are encapsulated in the middle of the shell 7.In the practice of the present invention; Electric current passes through resistor disc 8 to base plate b 9 from base plate a1; Then from break 2 to movable contact 6 to bimetal leaf 5, form series circuits (protector is regardless of both positive and negative polarity) to shell 7 again, 8 moments of resistor disc are sent superpower heat when electric current exceeds set point; When bimetal leaf 5 reaches set temperature value, the protector outage.It is 2～10 seconds that the present invention can control the escape time accurately.
Among the present invention, base plate a1 (Nippon Steel), base plate b9 (Nippon Steel) and shell 7 adopt Nippon Steel to make; Break, movable contact adopt the AgNi10 material; Insulating paper adopts the U.S. paper of promise; Bimetal leaf is an iron-nickel alloy; Resistor disc adopts nickel chromium triangle sheet, wide 1.0mm～4.0mm, long 6.0mm～12.0mm, thick 0.08～4.0mm, resistance 0.1 Ω/m～10 Ω/m.
Claims (2)
1. a motor protector is made up of metal base plate, break, insulating paper, iron nail, bimetal leaf, movable contact and metal shell, and metal base plate passes metal shell; The one end welding movable contact of bimetal leaf, other end welding iron nail aftershaping; The welding bimetal leaf has an end of iron nail in the metal shell, welds break on the base plate of corresponding movable contact, and insulating paper parcel base plate is encapsulated in the middle of the metal shell; It is characterized in that; Described metal base plate is made up of two parts at interval, welds resistor disc between two parts, and resistor disc is connected with bimetal leaf through break, movable contact.
2. motor protector according to claim 1 is characterized in that, described resistor disc adopts nickel chromium triangle sheet, wide 1.0mm～4.0mm, long 6.0mm～12.0mm, thick 0.08～4.0mm, resistance 0.1 Ω/m～10 Ω/m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103425141A CN102412562A (en) | 2011-11-03 | 2011-11-03 | Motor protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103425141A CN102412562A (en) | 2011-11-03 | 2011-11-03 | Motor protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102412562A true CN102412562A (en) | 2012-04-11 |
Family
ID=45914484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103425141A Pending CN102412562A (en) | 2011-11-03 | 2011-11-03 | Motor protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102412562A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4703298A (en) * | 1986-11-04 | 1987-10-27 | Texas Instruments Incorporated | Thermostat with ceramic mounting pins of resistive material |
| CN1264912A (en) * | 1999-02-23 | 2000-08-30 | 波特吉电子产品公司 | Sealing box type and circuit opening heat acting switch |
| CN101989513A (en) * | 2009-08-01 | 2011-03-23 | 利米托尔有限公司 | Bimetallic snap disc |
| CN202309015U (en) * | 2011-11-03 | 2012-07-04 | 扬州五岳电器有限公司 | Motor protector |
-
2011
- 2011-11-03 CN CN2011103425141A patent/CN102412562A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4703298A (en) * | 1986-11-04 | 1987-10-27 | Texas Instruments Incorporated | Thermostat with ceramic mounting pins of resistive material |
| CN1264912A (en) * | 1999-02-23 | 2000-08-30 | 波特吉电子产品公司 | Sealing box type and circuit opening heat acting switch |
| CN101989513A (en) * | 2009-08-01 | 2011-03-23 | 利米托尔有限公司 | Bimetallic snap disc |
| CN202309015U (en) * | 2011-11-03 | 2012-07-04 | 扬州五岳电器有限公司 | Motor protector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120411 |