CN209963916U - Bar-shaped inductor structure with current protection type - Google Patents
Bar-shaped inductor structure with current protection type Download PDFInfo
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- CN209963916U CN209963916U CN201920845992.6U CN201920845992U CN209963916U CN 209963916 U CN209963916 U CN 209963916U CN 201920845992 U CN201920845992 U CN 201920845992U CN 209963916 U CN209963916 U CN 209963916U
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- shaped inductor
- bar
- rod
- motor
- current protection
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Abstract
The utility model relates to a take bar type inductance structure of current protection type, include: the rotor enameled wire is used for generating a magnetic field through current to enable the motor rotor to rotate; the bar-shaped inductor is used for electromagnetic compatibility testing, one end of the bar-shaped inductor is connected with the brush holder, and the other end of the bar-shaped inductor is connected to a motor shell or a motor end cover; the ratio of the wire diameter of the rod-shaped inductor to the wire diameter of the rotor enameled wire is 9:10, and the insulation grade of the wire diameter of the rod-shaped inductor is lower than that of the rotor enameled wire, so that the rod-shaped inductor has a current protection function when being disconnected before a motor is disconnected. The utility model discloses a take bar type inductance structure of electric current protection type, rotor enameled wire and bar inductance through specific line footpath proportion for bar inductance can normally work when the motor normally works, has the function of current protection when the motor is unusual, can satisfy the electromagnetic compatibility test simultaneously, simplifies production technology, reduction in production and purchasing cost make the product have stronger market competition.
Description
Technical Field
The utility model relates to a household electrical appliances class motor technical field especially relates to a bar type inductance structure of electrified current protection type.
Background
At present, in the field of household electrical appliances, the related electromagnetic compatibility test and the safety requirement of IEC60335-1 need to be met at the same time, and the household electrical appliances are particularly exported to Europe.
Generally, when a high-performance motor is designed, a rod-shaped inductor which is a component related to an electromagnetic compatibility test needs to be added, and a current protector with safe current protection needs to be considered to be added. This increases procurement and production costs and reduces product competitiveness.
SUMMERY OF THE UTILITY MODEL
In view of the above, it is necessary to provide a bar-type inductor structure with current protection function having both inductor and current protection functions.
In order to solve the technical problem, the utility model discloses a technical scheme be: a rod-type inductor structure with current protection, comprising: the rotor enameled wire is used for generating a magnetic field through current to enable the motor rotor to rotate; the bar-shaped inductor is used for electromagnetic compatibility testing, one end of the bar-shaped inductor is connected with the brush holder, and the other end of the bar-shaped inductor is connected to a motor shell or a motor end cover; the ratio of the wire diameter of the rod-shaped inductor to the wire diameter of the rotor enameled wire is 9:10, and the insulation grade of the wire diameter of the rod-shaped inductor is lower than that of the rotor enameled wire, so that the rod-shaped inductor has a current protection function when being disconnected before a motor is disconnected.
Further, the insulation grade of the wire diameter of the rod-shaped inductor is H grade, and the insulation grade of the rotor enameled wire is F grade or B grade.
Further, the insulation grade of the wire diameter of the bar-shaped inductor is 1-2 lower than that of the rotor enameled wire.
Further, the two bar-shaped inductors are symmetrically arranged on two sides of the brush holder relative to the motor rotor.
Further, the rotor enameled wire is a polyester-imide enameled wire.
The beneficial effects of the utility model reside in that: rotor enameled wire and bar inductance through specific line footpath proportion for bar inductance can normally work when the motor normally works, has current protection's function when the motor is unusual, can satisfy the electromagnetic compatibility test simultaneously, simplifies production technology, reduces production and purchasing cost, makes the product have stronger market competition.
Drawings
Fig. 1 is a schematic structural diagram of a rod-shaped inductor structure with current protection according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the following description, with reference to the accompanying drawings and embodiments, will explain the rod-shaped inductor structure with current protection of the present invention in further detail. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
Referring to fig. 1, a rod inductor structure with current protection includes: the rotor enameled wire is used for generating a magnetic field through current to enable the motor rotor to rotate; a rod inductor 100 for electromagnetic compatibility test, one end of which is connected to the brush holder and the other end of which is connected to the motor case or motor end cap 200; the ratio of the wire diameter of the bar-shaped inductor 100 to the wire diameter of the rotor enameled wire is 9:10, and the insulation grade of the wire diameter of the bar-shaped inductor 100 is lower than that of the rotor enameled wire, so that the bar-shaped inductor 100 has a current protection function before the motor is disconnected.
Through the rotor enameled wire and the bar-shaped inductor 100 of specific line diameter proportion for bar-shaped inductor 100 can normally work when the motor normally works, has the function of current protection when the motor is abnormal, can satisfy the electromagnetic compatibility test simultaneously, simplifies production technology, reduces production and purchasing cost, makes the product have stronger market competition.
The ratio of the wire diameter of the bar-shaped inductor 100 to the wire diameter of the rotor enameled wire is 9:10, so that the bar-shaped inductor 100 can work normally when the motor works normally and can be disconnected before the motor is disconnected, and the safety requirements of an electromagnetic compatibility test and IEC60335-1 can be met; the insulation grade of the wire diameter of the rod-shaped inductor 100 is lower than that of the rotor enameled wire, and the rod-shaped inductor 100 can be disconnected before the motor is disconnected, so that the current protection function is achieved.
The high temperature resistance of different insulating materials is regulated to 7 allowable maximum temperatures, and the grades are arranged from low to high according to the temperature, and respectively are as follows: y, A, E, B, F, H and C.
Preferably, the insulation grade of the wire diameter of the rod inductor 100 is 1-2 lower than that of the rotor enamel wire.
Preferably, the insulation grade of the wire diameter of the rod inductor 100 is H grade, and the insulation grade of the rotor enamel wire is F grade or B grade.
Preferably, there are two rod-shaped inductors 100, and the two rod-shaped inductors 100 are symmetrically arranged on both sides of the brush holder with respect to the motor rotor.
Two rod-shaped inductors 100 are each connected to a brush holder. Typically, an inductor is connected in series with a capacitor.
Preferably, the rotor enamel wire is a polyesterimide enamel wire.
According to practical verification, the wire diameter of a common bar-shaped inductance is 0.4mm, the wire diameter of a used rotor enameled wire is 0.25 mm, the motor is tested according to the blocking 30S of IEC60335-1, and when the motor is disconnected, the bar-shaped inductance is not disconnected; and according to the utility model discloses a take bar type inductance structure of current protection type, rotor enameled wire winding line footpath is 0.2, and the inductance line footpath is 0.18, and the stifled commentaries on classics power of motor is preceding 3S average power 2000W, according to IEC 60335-1' S stifled commentaries on classics 30S, bar inductance line can be at 8-10S disconnection, and the motor is not broken string, and bar inductance has possessed the function of current protection.
Table one: experimental conditions
The beneficial effects of the utility model reside in that: through the rotor enameled wire and the bar-shaped inductor with specific wire diameter proportion, the bar-shaped inductor can normally work when a motor normally works, has a current protection function when the motor is abnormal, can simultaneously meet electromagnetic compatibility tests, simplifies the production process, reduces the production and purchase costs, can meet the safety requirements of the electromagnetic compatibility tests and IEC60335-1, and enables the product to have stronger market competitiveness.
To sum up, the utility model provides a practical motor lug design, the inductance pin is the cp line, has certain toughness, and easy to bend, utilizes the cp line attribute, directly passes through first through-hole and second through-hole, pushes down the carbon brush copper dish when bending, plays the role of conducting connection; the existing motors are mostly provided with inductors, and the wiring lugs are replaced by the above design, so that the cost of the wiring lugs is saved, and the welding or riveting procedure between the wiring lugs and the lead wires is omitted.
The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above description in any form, and although the present invention has been disclosed with reference to the preferred embodiment, it is not limited to the present invention, and any skilled person in the art can make modifications or changes equivalent to the equivalent embodiment of the above embodiments without departing from the scope of the present invention.
Claims (5)
1. A rod-type inductor structure with current protection, comprising:
the rotor enameled wire is used for generating a magnetic field through current to enable the motor rotor to rotate;
the bar-shaped inductor is used for electromagnetic compatibility testing, one end of the bar-shaped inductor is connected with the brush holder, and the other end of the bar-shaped inductor is connected to a motor shell or a motor end cover;
the ratio of the wire diameter of the rod-shaped inductor to the wire diameter of the rotor enameled wire is 9:10, and the insulation grade of the wire diameter of the rod-shaped inductor is lower than that of the rotor enameled wire, so that the rod-shaped inductor has a current protection function when being disconnected before a motor is disconnected.
2. The rod-shaped inductor structure with current protection according to claim 1, wherein the insulation grade of the wire diameter of the rod-shaped inductor is 1-2 lower than that of the rotor enameled wire.
3. The rod-shaped inductor structure with current protection according to claim 1, wherein the insulation grade of the wire diameter of the rod-shaped inductor is class H, and the insulation grade of the rotor enameled wire is class F or class B.
4. The rod-shaped inductor structure with current protection as claimed in claim 1, wherein there are two rod-shaped inductors, and the two rod-shaped inductors are symmetrically arranged on two sides of the brush holder relative to the motor rotor.
5. The rod-shaped inductor structure with current protection according to claim 1, wherein the rotor enameled wire is a polyesterimide enameled wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920845992.6U CN209963916U (en) | 2019-06-05 | 2019-06-05 | Bar-shaped inductor structure with current protection type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920845992.6U CN209963916U (en) | 2019-06-05 | 2019-06-05 | Bar-shaped inductor structure with current protection type |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209963916U true CN209963916U (en) | 2020-01-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920845992.6U Active CN209963916U (en) | 2019-06-05 | 2019-06-05 | Bar-shaped inductor structure with current protection type |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209963916U (en) |
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2019
- 2019-06-05 CN CN201920845992.6U patent/CN209963916U/en active Active
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