CN213585486U

CN213585486U - Micromotor EMC filtering device installed in penetrating mode on power line hole of micromotor shell

Info

Publication number: CN213585486U
Application number: CN202022717877.6U
Authority: CN
Inventors: 宋铠; 高立; 宋益平
Original assignee: Wuhan Vitentech Technology Co ltd
Current assignee: Wuhan Vitentech Technology Co ltd
Priority date: 2020-11-23
Filing date: 2020-11-23
Publication date: 2021-06-29
Anticipated expiration: 2030-11-23

Abstract

The utility model relates to a micromotor EMC technical field specifically is at micromotor EMC filter of micromotor casing power cord hole crossing type installation, including installing at the inside first EMC subassembly of motor and installing at the outside second EMC subassembly of motor, first EMC subassembly with the second EMC subassembly carries out the electricity through the line hole on the motor casing and connects, line hole department adopts plastic shape material to closely fill and realizes dustproof, take precautions against earthquakes and shielding effect. The integrated and distributed EMC circuit form is realized, and the EMC performance of the micromotor can be greatly and stably improved; the installation work of the EMC circuit can be completed only by two to three simple welding spots in the installation mode; meanwhile, the EMC components of the shapeable power line hole are tightly installed, so that excellent dustproof and shockproof effects can be achieved, and the stable work of the micromotor is further ensured.

Description

Micromotor EMC filtering device installed in penetrating mode on power line hole of micromotor shell

Technical Field

The utility model relates to a micromotor EMC technical field, concretely relates to passes through micromotor EMC filter equipment of formula installation at micromotor casing power cord hole.

Background

The micromotor (namely, a miniature motor) is not only widely applied to household appliances, but also often seen in industrial and mining enterprises. The direct current motor is determined to be an important source for electromagnetic interference generation in a system due to the special operating principle and structural characteristics of the direct current motor. The reasons for generating electromagnetic interference are mainly two: the spark problem of the commutator segment is solved, and the counter potential transient phenomenon generated by the pre-rectifying circuit is solved. If the EMC protection treatment is not carried out, most direct current motors cannot pass limit standards of EMC mandatory certification of each country, and products in developed countries and regions such as European and American countries are particularly concerned.

Although there is a theoretical basis in the EMC design, it is difficult to apply the EMC design simply due to the complexity of the actual design. Due to different product parameters, structural process differences and other factors, frequency bands and intensities of electromagnetic interference generated by micro-motors with different specifications and components (common mode interference and differential mode interference) of electromagnetic interference signals are different. Because the micromotor structure of tradition, size are different for the EMC performance of various micromotors hardly obtains effectual quick promotion, and the installation step of traditional EMC circuit is many simultaneously, wastes time and energy, and the installation effectiveness is low, and EMC performance is extremely unstable.

SUMMERY OF THE UTILITY MODEL

The utility model provides a pass through little motor EMC filter device of formula installation at little motor casing power cord hole, solved above little motor EMC effect poor technical problem.

The utility model provides a solve above-mentioned technical problem and provide the micromotor EMC filter device of passing through formula installation in micromotor casing power cord hole, including installing at the inside first EMC subassembly of motor and installing at the outside second EMC subassembly of motor, first EMC subassembly with the second EMC subassembly carries out the electricity through the line hole on the motor casing and connects, line hole department adopts the plastic material to closely fill and realizes dustproof, take precautions against earthquakes and the shielding effect.

Preferably, the second EMC component is soldered to the first EMC component through a pin connector provided on the motor housing.

Preferably, the first EMC component is a circular circuit board structure, a pad is arranged on the circular circuit board structure, and the plug connector on the second EMC component is welded on the pad.

Preferably, the first EMC component is a part of the motor main control filter board, and the second EMC component is another part of the motor main control filter board.

Preferably, a through hole with soldering tin is arranged on the first EMC component, a plug with soldering tin is arranged on the second EMC component, and the plug penetrates through the jack and is electrically connected with the first EMC component.

Has the advantages that: the embodiment of the utility model provides a micromotor EMC filter equipment at micromotor casing power cord hole crossing installation, including installing at the inside first EMC subassembly of motor and installing at the outside second EMC subassembly of motor, first EMC subassembly with the second EMC subassembly carries out the electricity through the line hole on the motor casing and connects, line hole department adopts the plastic material to closely fill and realizes dustproof, take precautions against earthquakes and shielding effect. The integrated and distributed EMC circuit form is realized, and the EMC performance of the micromotor can be greatly and stably improved; the installation work of the EMC circuit can be completed only by two to three simple welding spots in the installation mode; meanwhile, the EMC components of the shapeable power line hole are tightly installed, so that excellent dustproof and shockproof effects can be achieved, and the stable work of the micromotor is further ensured.

The above description is only an overview of the technical solution of the present invention, and in order to make the technical means of the present invention clearer and can be implemented according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present invention and accompanying drawings. The detailed description of the present invention is given by the following examples and the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without undue limitation to the invention. In the drawings:

FIG. 1 is a schematic view of the overall structure of the micro-motor EMC filter device installed in a penetrating manner in a power line hole of a micro-motor casing;

FIG. 2 is a schematic diagram of the second EMC component of the micromotor EMC filtering device installed in a penetrating manner at the power line hole of the micromotor housing according to the present invention;

fig. 3 is a schematic diagram of the connection structure of two EMC components of the micromotor EMC filter device installed in a penetrating manner at the power line hole of the micromotor casing.

Description of reference numerals: the motor 1, first EMC subassembly 2, second EMC subassembly 3, motor casing 4, plug 5.

Detailed Description

The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention. The invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become more fully apparent from the following description and appended claims. It should be noted that the drawings are in simplified form and are not to precise scale, and are provided for convenience and clarity in order to facilitate the description of the embodiments of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1 to 3, the embodiment of the utility model provides a micromotor EMC filter device of passing through formula installation at micromotor casing power cord hole, including installing at 1 inside first EMC subassembly 2 of motor and installing at 1 outside second EMC subassembly 3 of motor, first EMC subassembly 2 with second EMC subassembly 3 carries out the electricity through the line hole on the motor casing 4 and connects, line hole department adopts the plastic shape material to carry out closely to fill and realizes dustproof, take precautions against earthquakes and shielding effect. The afterbody of motor 1 has detachable motor casing 4, and motor casing 4 passes through bolted connection with 1 casing of motor, is equipped with the line hole on the motor casing 4 and supplies to walk the line or peg graft the usefulness. During installation, the motor shell 4 is taken down, the first EMC assembly 2 is installed and fixed inside the motor 1, glue bonding or welding or bolt connection can be adopted, a lead passes through a line hole in the motor shell 4 to connect the first EMC assembly 2 with the second EMC assembly 3, and then the shell is covered to screw the bolt, so that the installation is completed. The inner EMC component and the outer EMC component are isolated through the motor shell 4, and the motor shell 4 is made of electromagnetic shielding materials to block and isolate electromagnetism.

Wherein, the wire hole is tightly filled with a plastic material to realize the functions of dust prevention, shock prevention and shielding. During installation, the two EMC assemblies are electrically connected through the wire holes, and meanwhile, the filling and sealing are carried out through filling the plastic material. Has the functions of dust prevention, shock prevention and shielding.

The device is more convenient, and two EMC subassemblies have constituteed distributed EMC performance and have promoted the unit, can promote EMC radiation, the conduction characteristic of micromotor 1 by a wide margin.

Preferably, the second EMC component 3 is inserted through a wire hole on the motor housing and soldered by inserting a plug connector provided on the second EMC component into a corresponding pad on the first EMC component 2.

In an optimized scheme, the first EMC component 2 is a circular circuit board structure, a pad is arranged on the circular circuit board structure, and the plug connector on the second EMC component 3 is welded on the pad. The plug connector on the second EMC component 3 is firmly connected to the first EMC component 2 by welding, so that loosening and disconnection of common plug under vibration of the motor 1 are avoided.

Preferably, the first EMC component 2 is one part of a motor main control filter board, and the second EMC component 3 is another part of the motor main control filter board. The circuit on the two circuit boards can be separated by the motor shell 4, so that the EMC performance is improved.

Preferably, the first EMC component 2 is fixedly connected with the motor housing 4, a jack is arranged on the motor housing 4, the jack corresponds to an electric connection point of the first EMC component 2, the second EMC component 3 is provided with a plug 5, and the plug 5 penetrates through the jack to be electrically connected with the first EMC component 2. In the aspect of installation, the second EMC component 3 is only required to be installed in the power line hole of the motor shell 4, meanwhile, the plug 5 in the second EMC component 3 is inserted into the corresponding position on the first EMC component 2 for welding, only 2-3 welding points are required to be welded in the installation process, the motor shell 4 is covered, and the installation can be completed, so that the installation steps are extremely simple; simultaneously because the plastic nature of second EMC subassembly 3, with power cord hole close coupling, played fine dustproof, anti-vibration effect.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way; the present invention can be smoothly implemented by those skilled in the art according to the drawings and the above description; however, those skilled in the art should understand that changes, modifications and variations made by the above-described technology can be made without departing from the scope of the present invention, and all such changes, modifications and variations are equivalent embodiments of the present invention; meanwhile, any changes, modifications, evolutions, etc. of the above embodiments, which are equivalent to the actual techniques of the present invention, still belong to the protection scope of the technical solution of the present invention.

Claims

1. The micromotor EMC filtering device installed in a penetrating manner at a power line hole of a micromotor shell is characterized in that: including installing at the inside first EMC subassembly of motor and installing the outside second EMC subassembly at the motor, first EMC subassembly with the second EMC subassembly carries out the electricity through the line hole on the motor casing and connects, line hole department adopts the plastic material to closely fill and realizes dustproof, take precautions against earthquakes and shielding effect.

2. The cross-over mounted micro-machine EMC filter device at the power line hole of the micro-machine housing of claim 1, wherein: the second EMC assembly penetrates through the wire hole in the motor shell and is welded with the first EMC assembly through a plug connector arranged on the second EMC assembly.

3. The cross-over mounted micro-machine EMC filter device at the power line hole of the micro-machine housing of claim 2, wherein: the first EMC assembly is of a circular circuit board structure, a pad is arranged on the circular circuit board structure, and a plug connector on the second EMC assembly is welded on the pad.

4. The cross-over mounted micro-machine EMC filter device at the power line hole of the micro-machine housing of claim 1, wherein: the first EMC subassembly is a part of motor master control filter plate, the second EMC subassembly is another part of motor master control filter plate.

5. The cross-over mounted micro-machine EMC filter device at the power line hole of the micro-machine housing of claim 1, wherein: be equipped with the through-hole of taking soldering tin on the first EMC subassembly, the second EMC subassembly is equipped with the plug of taking soldering tin, the plug passes the through-hole with first EMC subassembly electricity is connected.