Abstract:
Disclosed herein is a coil winding structure of a stator core including: the stator core; an insulator covering the stator core and provided with a coil coupling part; and a coil wound around the stator core and connected to the coil coupling part of the insulator, wherein a solder is injected into the coil coupling part, such that the coil is electrically connected to an external connecting line.

Description:
CROSS REFERENCE TO RELATED APPLICATION 
       [0001]    This application claims the benefit of Korean Patent Application No. 10-2013-0067867, filed on Jun. 13, 2013, entitled “Coil Winding Structure of Stator Core”, which is hereby incorporated by reference in its entirety into this application. 
       BACKGROUND OF THE INVENTION 
       [0002]    1. Technical Field 
         [0003]    The present invention relates to a coil winding structure of a stator core. 
         [0004]    2. Description of the Related Art 
         [0005]    Generally, in a coil wiring or winding structure of a stator core, a coil is wound around the stator core and is electrically connected to an external device through an external connecting terminal. 
         [0006]    However, a coil winding structure of a stator core according to the prior art including the following Prior Art Document has problems that it is very complicated to primarily wind a coil around the stator core and electrically connect the coil to a connection pit or a contact pin of an external device, such that productivity is decreased and many defects occur. 
       PRIOR ART DOCUMENT  
     Patent Document  
       [0007]    (Patent Document 1) US 2013-0049742 A 
       SUMMARY OF THE INVENTION 
       [0008]    The present invention has been made in an effort to provide a coil winding structure of a stator core capable of implementing an automation process and improving productivity due to mass production by a rapid manufacturing process, by forming a coil coupling part at an insulator coupled to the stator core and using a coil coating and solder coupling method. 
         [0009]    According to a preferred embodiment of the present invention, there is provided a coil winding structure of a stator core including: the stator core; an insulator covering the stator core and provided with a coil coupling part; and a coil wound around the stator core and connected to the coil coupling part of the insulator, wherein a solder is injected into the coil coupling part, such that the coil is electrically connected to an external connecting line. 
         [0010]    The coil coupling part may include: boss parts protruding so that the coil is wound therearound; and a coupling groove into which the external connecting line is inserted. 
         [0011]    The boss parts may be configured in pairs formed so as to face each other and have an interval therebetween. 
         [0012]    The boss parts may be configured in pairs formed so as to face each other and protruding so as to have an interval therebetween so that the coil is wound therearound, and the coupling groove may be formed between the boss parts configured in pairs so that the external connecting line is inserted thereinto. 
         [0013]    The coil may be wound around the boss part, and a partial region of one surface of the coil directed toward the coupling groove may be cut to form a coated part. 
         [0014]    The coated part of the coil may be cut and formed by a cutter in a state in which the coil is wound around the boss part. 
         [0015]    The coil may be made of an aluminum coil or a copper wire. 
         [0016]    The coil winding structure of a stator core as set forth may further include a printed circuit board (PCB) coupling pin inserted into and coupled to the coupling groove. 
         [0017]    The PCB coupling pin may be led from a motor controlling circuit. 
         [0018]    A wall may be formed by the coil wound around the boss part, and a PCB coupling pin may be inserted into the coupling groove and the solder may be injected into the coupling groove, such that the coil and the PCB coupling pin are electrically connected to each other. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0019]    The above and other objects, features and advantages of the present invention will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which: 
           [0020]      FIG. 1  is a perspective view schematically showing a coil winding structure of a stator core according to a preferred embodiment of the present invention; 
           [0021]      FIG. 2  is a perspective view schematically showing an insulator in the coil winding structure of a stator core shown in  FIG. 1 ; and 
           [0022]      FIGS. 3A to 3C  are use state diagrams schematically showing a process of winding a coil of the stator core shown in  FIG. 1 . 
       
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENTS 
       [0023]    The objects, features and advantages of the present invention will be more clearly understood from the following detailed description of the preferred embodiments taken in conjunction with the accompanying drawings. Throughout the accompanying drawings, the same reference numerals are used to designate the same or similar components, and redundant descriptions thereof are omitted. Further, in the following description, the terms “first”, “second”, “one side”, “the other side” and the like are used to differentiate a certain component from other components, but the configuration of such components should not be construed to be limited by the terms. Further, in the description of the present invention, when it is determined that the detailed description of the related art would obscure the gist of the present invention, the description thereof will be omitted. 
         [0024]    Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. 
         [0025]      FIG. 1  is a perspective view schematically showing a coil winding structure of a stator core according to a preferred embodiment of the present invention. 
         [0026]    As shown in  FIG. 1 . the coil winding structure  100  of the stator core is configured to include the stator core  110 , a coil  120 , and an insulator  130 , wherein the insulator  130  is provided with a coil coupling part  131  to which the coil  120  is coupled. 
         [0027]    In addition, the coil winding structure  100  of the stator core further includes a printed circuit board (PCB) coupling pin  140  coupled to the coil coupling part  131  of the insulator  130 . Further, the PCB coupling pin  140 , which is led from a motor controlling circuit (not shown), is electrically connected to the coil  120  by a solder  150  injected into the coil coupling part  131 , such that the coil is electrically connected to the motor controlling circuit. 
         [0028]    To this end, the coil  120  is wound around the coil coupling part  131 , and a partial region of the coil directed inwardly of the coil coupling part  131  is coated. That is, the coated region of the coil  120  contacts the solder  150 , which contacts the PCB coupling pin  140 , such that the coil  120  is electrically connected to the PCB coupling pin  140 . 
         [0029]    In addition, the coil  120  may be made of an aluminum coil or a copper wire. 
         [0030]    Further, the coil winding structure of a stator core according to the preferred embodiment of the present invention may also use an electric wire instead of the PCB coupling pin. That is, coated one end portion of the electrical wire is fixed to the insulator and is electrically connected to the coated region of the coil through the solder. 
         [0031]    Hereinafter, a configuration, a shape, and organic coupling of the coil winding structure of a stator core will be described in detail with reference to  FIGS. 2 and 3 . 
         [0032]      FIG. 2  is a perspective view schematically showing an insulator in the coil winding structure of a stator core shown in  FIG. 1 . As shown in  FIG. 2 , the insulator  130  coupled to the stator core has a shape in which it corresponds to the stator core  110  and covers the stator core  110 . In addition, the coil coupling part  131  to which the coil  120  is to be coupled is formed. 
         [0033]    Further, a plurality of coil coupling parts  131  may be formed at equal intervals and includes boss parts  131   a  and a coupling groove  131   b.    
         [0034]    Here, the boss parts  131  a have a shape in which they protrude so that the coil  120  may be wound therearound and are configured in pairs so as to face each other. That is, in the case in which the coil is wound, the coil is wound around one boss part  131   a ′ and the other boss part  131   a ″ while being supported by one boss part  131   a ′ and the other boss part  131   a″.    
         [0035]    In addition, the coupling groove  131   b  into which the PCB coupling pin  140  to be electrically connected to the coil  120  is inserted may be formed between the boss parts  131   a ′ and  131   a ″ configured in pairs. 
         [0036]      FIGS. 3A to 3C  are use state diagrams schematically showing a process of winding a coil of the stator core shown in  FIG. 1 . As shown in  FIG. 3A , the coil  120  is wound around the boss parts  131   a ′ and  131   a ″ of the insulator  130 . In addition, one surface of the coil directed toward the boss parts  131   a ′ and  131   a ″ facing each other is coated. 
         [0037]    To this end, one surface of the coil directed inwardly of the boss parts  131   a ′ and  131   a ″ is cut using a cutter  200  and is then coated, in a state in which the coil  120  is wound around the boss part  131   a ′ and  131   a″.    
         [0038]    Therefore, the coil  120  is provided with a coated part  121 . 
         [0039]    Next, as shown in  FIG. 3B , the PCB coupling pin  140  is inserted into and coupled to the coupling groove  131   b  (See  FIG. 3A ) of the insulator  130 . 
         [0040]    In addition, as shown in  FIG. 3C , the solder  150  is injected into the coil coupling part  131  of the insulator  130 . That is, in the coil coupling part  131  of the insulator  130 , the coil  130  is wound around the boss parts  131   a ′ and  131   a ″, such that a wall is formed by the boss parts  131   a ′ and  131   a ″ and the coil  120 . As a result, even though the solder  150  is injected into the coil coupling part  131 , a flow of the solder  150  to the outside is prevented by the wall. 
         [0041]    Through the above-mentioned configuration, the coil  120  is electrically connected to the PCB coupling pin  140 . To this end, a coil coating and solder coupling method is used, thereby making it possible to implement an automation process and improve productivity due to mass production by a rapid manufacturing process. 
         [0042]    According to the preferred embodiment of the present invention, the coil coupling part is formed at the insulator coupled to the stator core and the coil coating and solder coupling method is used, thereby making it possible to obtain a coil winding structure of a stator core capable of implementing an automation process and improving productivity due to mass production by a rapid manufacturing process. 
         [0043]    Although the embodiments of the present invention have been disclosed for illustrative purposes, it will be appreciated that the present invention is not limited thereto, and those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention. 
         [0044]    Accordingly, any and all modifications, variations or equivalent arrangements should be considered to be within the scope of the invention, and the detailed scope of the invention will be disclosed by the accompanying claims.