Patent Publication Number: US-2023155450-A1

Title: Motor

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application is a continuation of U.S. application Ser. No. 16/301,216, filed Nov. 13, 2018; which is the U.S. national stage application of International Patent Application No. PCT/KR2017/004811, filed May 10, 2017, which claims the benefit under 35 U.S.C. § 119 of Korean Application Nos. 10-2016-0056981, filed May 10, 2016; and 10-2016-0169537, filed Dec. 13, 2016; the disclosures of each of which are incorporated herein by reference in their entirety. 
    
    
     TECHNICAL FIELD 
     Embodiments relate to a motor. 
     BACKGROUND ART 
     A motor includes a stator and a rotor. The stator may include a stator core and a coil wound around teeth of the stator core. The stator may be composed of a plurality of stator cores. The coil may be wound around each of the stator cores. 
     In this case, the motor may include a bus bar which is disposed above the stator and connects the coils wound around the stator cores. In this case, a terminal included in the bus bar is fused with and connected to the coil. However, when there are a plurality of stator cores, there are many problems in a fusing process. 
     Further, when the above described motor is connected to a vehicle component such as a braking device, a power transmitter for transmitting a rotational force of the motor is required. For example, when a direction of power transmission is a vertical direction, a rotational shaft of the motor may be provided with a worm shaft composed of a rotational shaft on which a thread is formed. In addition, a worm wheel which is engaged with the worm shaft may be provided. In this case, there is a problem that a size of the motor is inevitably increased due to a length of the worm shaft and a required diameter of the worm wheel. 
     Technical Problem 
     The present invention is directed to providing a motor capable of reducing the number of fusing processes, reducing the number of parts, and reducing a size thereof, and a motor including the same. 
     The problems to be solved by the embodiments are not limited to the above-mentioned problems, and other problems which are not mentioned herein can be clearly understood by those skilled in the art from the following description. 
     Technical Solution 
     One aspect of the present invention provides a motor which includes a body in an annular shape including a first coil guide and a guide part disposed to be protruded from the body and including a second coil guide connected to the first coil guide. 
     The guide part may be formed to protrude from an upper face of the body in a direction of a rotational shaft passing through a center of the body. 
     The first coil guide may be concavely disposed in the upper face of the body. 
     The body may include a through hole passing through the upper face and a lower face thereof and connected to the first coil guide. 
     A plurality of first coil guides identical to the first coil guide may be formed, and the first coil guides may be disposed on an orbit, which has a different radius, with respect to the center of the body. 
     The guide part may include, with respect to the center of the body, an inner circumferential surface, an outer circumferential surface, and a side surface connecting the inner circumferential surface and the outer circumferential surface. 
     The second coil guide may be concavely disposed in the inner circumferential surface of the guide part. 
     The second coil guide may be concavely disposed in the side surface of the guide part. 
     The body may include a first body and a second body disposed on the first body, the first body may include a through hole passing through an upper face and a lower face thereof, and the guide part may be disposed on an upper face of the second body to protrude therefrom. 
     The first coil guide body may be disposed in the outer circumference surface of the guide part concavely in a direction toward the center of the body with respect to a radial direction from the center of the body, and the second coil guide may be disposed in the outer circumferential surface of the guide part concavely in a direction toward the center of the body. 
     Another aspect of the present invention provides a motor including a rotational shaft, a rotor coupled to the rotational shaft, a stator disposed on an outside of the rotor, and a router disposed above the stator, wherein the router may include a body in an annular shape including a first coil guide and a guide part disposed to protrude from the body and including a second coil guide connected to the first coil guide. 
     The motor may further include a housing, and the housing may include a first receiving part, a second receiving part and a third receiving part which are disposed to communicate with each other, the rotor, the stator, and a body of the router may be disposed in the first receiving part, the guide part of the router may be disposed in the second receiving part, and the rotational shaft may be disposed in the third receiving part. 
     Still another aspect of the present invention provides a motor including a rotational shaft, a rotor coupled to the rotational shaft, a stator disposed on an outside of the rotor, and a terminal cover, wherein the terminal cover may include a body part covering an upper portion of the stator and a side part extending downward from the body port, the body part may include a terminal connected to a coil of the stator, and the terminal may be disposed inward of the side part. 
     The terminal may include a terminal body and a terminal pin formed at an end portion of the terminal body, and the body part may include a hole positioned to allow the terminal pin to be exposed therethrough. 
     The body part may include a plurality of holes disposed along a circumference thereof. 
     The plurality of holes may be disposed at regular intervals in a circumferential direction with respect to a center of the body part. 
     The body part may be divided into a first region portion and a second region portion along a circumference thereof, and a plurality of holes may be disposed in only the first region portion of the first and second region portions. 
     The terminal body may include a first terminal body and a second terminal body connected to each other, the first terminal body may include the terminal pin, and the second terminal body may be disposed to perpendicularly extend from the first terminal body. 
     The body part may include a first body and a second body, the first body may include the first terminal body therein, and the second body may be disposed perpendicularly to the first body to include the second terminal body therein. 
     The second body may be disposed in the first region portion. 
     Advantageous Effects 
     According to the embodiment, by omitting a bus bar assembly and directly guiding a coil wound around a stator to a terminal through a change of a method for connecting a wire, the number of components is reduced and the configuration is simplified, whereby advantageous effects of reducing the number of manufacturing processes and manufacturing costs are provided. 
     According to the embodiment, by omitting the bus bar assembly, a fusing process between the coil wound around the stator and the terminal of the bus bar assembly is not included, and thus an advantageous effect of inherently eliminating defects that can occur in the fusing process is provided. 
     According to the embodiment, the bus bar is omitted to provide an advantageous effect of reducing a length of an entire motor. 
     According to the embodiment, by reducing fusing points of the coil and the terminal, an advantageous effect of significantly reducing the number of fusing processes is provided. 
    
    
     
       DESCRIPTION OF DRAWINGS 
         FIG.  1    is a view illustrating a motor according to one embodiment. 
         FIG.  2    is a cross-sectional view of the motor taken along line A-A in  FIG.  1   . 
         FIG.  3    is a view illustrating the interior of a housing. 
         FIG.  4    is a view illustrating a stator including a router according to one embodiment. 
         FIG.  5    is an enlarged view of region A in  FIG.  4   . 
         FIG.  6    is a view illustrating a first coil guide and a second coil guide. 
         FIG.  7    is a view illustrating a stator including a router according to another embodiment. 
         FIG.  8    is a cross-sectional view taken along line B-B in  FIG.  7    that shows a first coil guide. 
         FIG.  9    is a view illustrating a second coil guide. 
         FIG.  10    is a view illustrating a terminal cover applied to a motor according to still another embodiment. 
         FIG.  11    is a view illustrating an outer diameter of a stator and an outer diameter of the terminal cover. 
         FIG.  12    is a view illustrating a terminal. 
         FIGS.  13  to  15    are views illustrating three terminals. 
         FIG.  16    is a view illustrating a hole of the terminal cover. 
         FIG.  17    is a view illustrating a modified example of the terminal cover. 
         FIG.  18    is a view illustrating a hole of the terminal cover illustrated in  FIG.  17   . 
         FIG.  19    is a view illustrating a modified example of the terminal. 
         FIG.  20    is a view illustrating the stator including an insulator. 
         FIG.  21    is a view illustrating the insulator. 
         FIG.  22    is a view illustrating the terminal and a sealing cover. 
     
    
    
     MODES OF THE DISCLOSURE 
     Hereinafter, exemplary embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. Objects, specific advantages, and novel features of the present disclosure will become more apparent from the following detailed description and preferred embodiments related to the accompanying drawings. In addition, the terms and words used in the specification and claims should not be construed to be limited to ordinary or dictionary meanings and should be construed as the meaning and concept consistent with the technical idea of the present disclosure in view of the fact that an inventor should appropriately define the concept of term in order to describe own disclosure in the best way. In addition, in the following description, a detailed description of related arts which may unnecessarily obscure the gist of the present disclosure will be omitted. 
       FIG.  1    is a view illustrating a motor according to one embodiment, and  FIG.  2    is a cross-sectional view of the motor taken along line A-A in  FIG.  1   .  FIGS.  1  and  2    clearly illustrate only main feature parts in order to conceptually clearly understand the present disclosure, and as a result various variations of the illustrations are to be expected, and there is no need to limit the scope of the present disclosure to the specific configuration illustrated in the drawings. 
       FIG.  1    is a view illustrating a motor according to one embodiment, and  FIG.  2    is a view illustrating a cross-section of the motor taken along line A-A in  FIG.  1   .  FIGS.  1  and  2    clearly illustrate only main feature parts in order to conceptually clearly understand the present disclosure, and as a result various variations of the illustrations are to be expected, and there is no need to limit the scope of the present disclosure to the specific configuration illustrated in the drawings. 
     Referring to  FIGS.  1  and  2   , a motor  10  according to the embodiment may include a rotational shaft  100 , a rotor  200 , a stator  300 , a router  400  and a housing  500 . 
     The rotational shaft  100  may have a thread formed on an outer circumferential surface thereof to be implemented as a worm shaft. 
     The rotor  200  may be disposed inward of the stator  300 . The rotor  200  may include a rotor core and a magnet. The rotor  200  may be classified into the following according to a coupling method of the rotor core and the magnet. The rotor  200  may be embodied with a configuration in which the magnet is coupled to an outer circumferential surface of the rotor core. In such a type of the rotor  200 , a separate can member may be coupled to the rotor core to inhibit disengagement of the magnet and increase a coupling force. Alternatively, the magnet and the rotor core may be double-injection molded to be integrally formed with each other. The rotor  200  may be embodied with a configuration in which the magnet is coupled to the inside of the rotor core. In such a type of rotor  200 , a pocket into which the magnet is inserted may be provided in the rotor core. 
     On the other hand, the rotor core may be largely classified into two types of rotor cores. 
     First, the rotor core may be formed by mutually laminating a plurality of plates, each of which is formed in the form of a thin steel plate. In this case, the rotor core may be formed as a single piece that does not form a skew angle, or may be formed by coupling a plurality of unit cores (puck), which form a skew angle. 
     Second, the rotor core may be formed in the form of one cylinder. In this case, the rotor core may be formed as a single piece that does not form a skew angle, or may be formed by coupling a plurality of unit cores (puck), which form a skew angle, with each other. 
     Meanwhile, each of the unit cores may include the magnet disposed inward or outward thereof. 
     The stator  300  is disposed on an outside of the rotor  200 . The stator  300  electrically interacts with the rotor  200  to induce rotation of the rotor  200 . A coil  1  may be wound around the stator  300  to cause an interaction between the rotor  200  and the stator. A specific configuration of the stator  300  for winding the coil  1  is as follows. The stator  300  may include a stator core including teeth. The stator core is provided with an annular yoke, and the teeth extending from the yoke to a center of the yoke may be provided. The teeth may be provided at regular intervals along a circumference of the yoke. Meanwhile, the stator  300  may be formed by mutually laminating a plurality of plates, each of which is formed in the form of a thin steel plate. Further, the stator core may be formed by coupling or connecting a plurality of divided cores. The coil  1  is wound around the teeth to have magnetic poles, the rotor  200  is rotated by a magnetic field formed by the wound coil  1 , and the rotational shaft  100  is simultaneously rotated. 
     The router  400  is disposed above the stator  300 . The router  400  guides the coils  1  wound around the stator  300  to connect the coil to a terminal  600  of a power part located above of the housing  500 . In this case, the terminal  600  of the power part may be an element to which a power source with U, V and W phases is connected. 
       FIG.  3    is a view illustrating the interior of the housing. 
     Referring to  FIGS.  2  and  3   , the housing  500  may include a first receiving part  510 , a second receiving part  520 , a third receiving part  530 , and a worm wheel receiving part  540 . 
     The first receiving part  510  is disposed at a lower portion of the housing  500  and has an inner space in which the rotor  200 , the stator  300 , and a body  410  (see  FIG.  4   ) of the router  400  are accommodated. 
     The second receiving part  520  is disposed to be vertically elongated and has a receiving space for a guide part  420  (see  FIG.  4   ) of the router  400 . The second receiving part  520  is configured to communicate with the first receiving part  510  through a lower portion thereof and to have an opened upper portion. 
     The third receiving part  530  is disposed above the first receiving part  510  and communicates with the first receiving part  510 . This third receiving part  530  is disposed to be vertically elongated. The rotational shaft  100  is disposed in the third receiving part  530 . An inlet of the third receiving part  530  is connected to the first receiving part  510  and an outlet thereof may be connected to a component of a vehicle, such as a brake device. In addition, the third receiving part  530  is separated from the second receiving part  520 . On the other hand, brake oil or lubricating oil of the brake device may flow into the third receiving part  530  via the outlet of the third receiving part  530 . To inhibit this, the outlet of the third receiving part  530  may be covered with a sealing cover  700 . 
     The worm wheel receiving part  540  communicates with the third receiving part  530 . The worm wheel receiving part  540  has a space for receiving a worm wheel engaging the rotational shaft  100 . The worm wheel receiving part  540  may be disposed on one side with respect to the third receiving part  530 , and the second receiving part  520  may be disposed on the other side. As one example, the worm wheel receiving part  540  may be located in front of the third receiving part  530 , and the second receiving part  520  may be located behind the third receiving part  530 . 
       FIG.  4    is a view illustrating the stator  300  including the router  400  according to one embodiment,  FIG.  5    is an enlarged view of region A in  FIG.  4   , and  FIG.  6    is a view illustrating a first coil guide and a second coil guide. 
     Referring to  FIGS.  4  to  6   , the router  400  may be disposed above the stator  300 . The router  400  may include an annular body  410  and a guide part  420 . 
     The body  410  may be an annular plate-shaped member having a constant height and having a hole formed in a center thereof. In addition, the body  410  may include a first coil guide  411 . The first coil guide  411  serves to guide an extended portion of the coil  1  wound around the stator  300  to the guide part  420 . The first coil guide  411  may be concavely disposed in an upper surface of the body  410  to form a space in which the coil  1  is accommodated. The first coil guide  411  is formed to be elongated in a circumferential direction with respect to a center of the router  400  to guide the extended portion of the coil  1 , which is rolled around the stator  300 , to the guide part  420 . To this end, the first coil guide  411  may be disposed to correspond to a position where the extended portion of the coil  1  wound around the stator  300  ascends in a radial direction with respect to a center of the router  400 . 
     A through hole  412  may be formed in the first coil guide  411 . The through hole  412  may be formed to pass through the upper surface and a lower surface of the body  410 . The coil  1  located below the body  410  passes through the through hole  412  and is positioned in the first coil guide  411 . The coil  1  positioned in the first coil guide  411  is guided along the first coil guide  411  and connected to the guide part  420 . The number of the through holes  412  may be set according to a method for winding the coil  1 . 
     Referring to  FIG.  6   , a plurality of first coil guides  411   a  and  411   b  may be provided. Each of the first coil guides  411   a  and  411   b  may be disposed along a circular orbit, which has a different radius R 1 , with respect to the center of the router  400 . This configuration is provided to cope with a position where the coil  1  ascends or to secure a space for connecting the coil  1  to the second coil guide  421  of the guide part  420 . 
     The guide part  420  may be disposed to protrude perpendicularly to the body  410 . That is, the guide part  420  may be disposed to be elongated in a direction of a rotational shaft passing through a center C of the body  410 . The above described guide part  420  serves to guide the coil  1 , which is guided through the first coil guide  411  of the body  410 , to the terminal  600  of the power part located at an upper portion of the housing  500 . To this end, the guide part  420  may include a second coil guide  421  connected to the first coil guide  411 . 
     The second coil guide  421  may be disposed to be concave in a surface of the guide part  420 . However, the embodiment is not limited thereto, and the second coil guide may be disposed inside the guide part  420 . 
     Meanwhile, the guide part  420  may include a plurality of second coil guides  421   a ,  421   b , and  421   c . As one example, the guide part  420  may be implemented to have a shape including an inner circumferential surface  420   a , an outer circumferential surface  420   b , and a side surface  420   c  for connecting the inner circumferential surface  420   a  and the outer circumferential surface  420   b.  In this case, the second coil guide  421  may be concavely disposed in the inner circumferential surface  420   a  or the side surface  420   c.    
     Three second coil guides  421   a ,  421   b , and  421   c  may be provided. The coils  1  of U-phase, V-phase, and W-phase may be accommodated in the second coil guides  421   a ,  421   b , and  421   c , respectively. As one example, two second coil guides  421   a  and  421   b  may be disposed on the inner circumferential surface  420   a  of the guide part  420  and the other one second coil guide  421   c  may be disposed on the side surface  420   c  of the guide part  420 . 
     Each of the second coil guides  421   a ,  421   b , and  421   c  is connected to the first coil guides  411   a  and  411   b.    
     The extended portion of the coil  1  wound around the stator  300  passes through the through hole  412  and is then accommodated in the first coil guide  411 . The coil  1  accommodated in the first coil guide  411  is guided in a circumferential direction with reference to the center of the router  400  to reach the second coil guide  421  of the guide part  420 . The coil  1  accommodated in the second coil guide  421  is guided to the upper portion of the housing  500  to reach the terminal  600  of the power part. 
       FIG.  7    is a view illustrating a stator  300  including a router  400  according to another embodiment,  FIG.  8    is a cross-sectional view taken along line B-B in  FIG.  7    that shows a first coil guide  411 , and  FIG.  9    is a view illustrating a second coil guide  421 . 
     As another type of router  400 , a body  410  may be implemented as an annular plate shaped member having multiple steps with different heights. For example, the body  410  may include a first body  410   a  and a second body  410   b  formed on the first body  410   a . An outer diameter of the second body  410   b  which is correspondingly disposed on an upper side is smaller than an outer diameter of the first body  410   a . In addition, the second body  410   b  may include the first coil guide  411  which is concavely disposed in an outer circumferential surface thereof. 
     The first body  410   a  may include a through hole  412 . The through hole  412  is formed to pass through an upper surface and a lower surface of the first body  410   a.    
     The guide part  420  may be disposed to protrude perpendicularly to the second body  410   b . That is, the guide part may be formed to be elongated in a direction of the rotational shaft passing through a center C of the body  410 . As one example, the guide part  420  may be implemented to have a shape including an inner circumferential surface  420   a , an outer circumferential surface  420   b , and a side surface  420   c  for connecting the inner circumferential surface  420   a  and the outer circumferential surface  420   b , and all the second coil guides  421  may be disposed on the outer circumferential surface  420   b.    
     A coil  1  guided along the outer circumferential surface of the second body  410   b  to the first coil guide  411  is guided to an upper portion of a housing  500  by the second coil guide  421  and then reaches the terminal  600  (see  FIG.  2   ) of the power part. 
       FIG.  10    is a view illustrating a terminal cover applied to a motor according to still another embodiment. 
     Referring to  FIG.  10   , a terminal cover  800  replacing the router  400  (see  FIG.  4   ) may be disposed. The terminal cover  800  covers an upper portion and a portion of side surface of a stator  300 . 
     The terminal cover  800  may include a body part  810 , a side part  820 , and a terminal  830 . Here, the body part  810  and the side part  820  may be described as being divided according to their shapes and functional characteristics and may be one part vertically connected to each other. 
     The body part  810  covers the stator  300 . The body part  810  may be an annular member having a hole  801  formed in a center thereof. The hole  801  is a region through which the rotational shaft  100  passes. 
     The body part  810  may include a first body  811  and a second body  812 . The first body  811  is an annular member horizontally disposed above the stator  300 , and the second body  812  is a member which is vertically disposed on the first body  811  and disposed to be elongated in a longitudinal direction. The first body  811  and the second body  812  may be connected to each other to be formed as a unitary mold member. Meanwhile, the body part  810  may include a guide  802  protruding from a lower end of the first body  811 . The guide  802  is in contact with an insulator  310  of the stator  300  or the coil  1  to support the first body  811 . A side part  820  may be formed to extend downward from a periphery of the body part  810 . 
       FIG.  11    is a view illustrating an outer diameter of the stator  300  and an outer diameter of the terminal cover  800 . 
     Referring to  FIG.  11   , a diameter of the terminal cover  800 , that is, an outer diameter D 1  of the side part  820  may be equal to an outer diameter D 2  of the stator  300 . A lower end portion of the side part  820  is in contact with an upper end portion of the stator  300 . Specifically, a lower surface end of the side part  820  is in contact with a top surface of the stator  300 . 
       FIG.  12    is a view illustrating the terminal  830 , and  FIGS.  13  to  15    are views illustrating each of three terminals. 
     Referring to  FIGS.  12  to  15   , the terminal  830  may be partially included in the inside of the first body  811 . Three terminals  830  of U, V and W phases may be provided. Common features of the three terminals  830  are as follows. 
     Each of the terminals  830  may include a terminal body  831  and a terminal pin  832 . 
     The terminal body  831  is contained in the first body  811  and the second body  812 , and the terminal pin  832  is exposed out of the first body  811 . 
     The terminal body  831  may include a first terminal body  831   a  and a second terminal body  831   b . The first terminal body  831   a  may be disposed within the first body  811  and the second terminal body  831   b  may be disposed within the second body  812 . Here, the first terminal body  831   a  and the second terminal body  831   b  may be described as being divided according to their shapes and functional characteristics and may be one body vertically connected to each other. 
     Terminal pins  832  may be provided at both ends of the first terminal body  831   a . The terminal pin  832  may be formed to be bent for being fused with the coil  1  wound around the stator  300 . In addition, the first terminal body  831   a  may be formed to be bent in a circumferential direction of the terminal body  831 . 
     The second terminal body  831   b  may be formed to be bent so as to extend vertically from the first terminal body  831   a.    
       FIG.  16    is a view illustrating a hole of the terminal cover. 
     Referring to  FIG.  16   , a hole  811   a  through which the terminal pin  832  is exposed may be formed in the first body  811 . The plurality of holes  811   a  may be disposed along a circumference of the first body  811 . In order to reinforce a structural strength of the plurality of holes  811   a , a bridge  815  may be disposed between the holes  811   a . In addition, the holes  811   a  may be provided to be aligned with positions of the terminal pins  832  of the terminal  830 . 
     The coil  1  of the stator  300  passing through the hole  811   a  comes in contact with the terminal pin  832  and is then fused. The first body  811  may be divided into a first region portion  813  and a second region portion  814  depending on whether the hole  811   a  is formed therein. The first region portion  813  is a portion where the plurality of holes  811   a  are formed, and the second region portion  814  is a portion where the hole  811   a  is not formed. The terminal pins  832  of the terminal  830  are disposed in the first region portion  813 . The second terminal body  831   b  which is vertically formed may also be disposed in the first region portion  813 . 
     The terminal pin  832  exposed to the outside of the first body  811  is located inward of the side part  820 . Therefore, the side part  820  surrounds the terminal pin  832  to which the coil  1  is fused. In the motor according to the embodiment, the body part  810  and the side part  820  replace a role of a bus bar for covering the stator  300  and connection of the coil  1  at the same time, and therefore it is possible to omit the bus bar. In the motor according to the embodiment, since the bus bar is omitted, a length of the entire motor can be reduced. In addition, since the number of components can be reduced by omitting the bus bar, there is also an advantage that manufacturing costs can be reduced. 
     In the first region portion  813 , as an example, six terminal pins  832  may be arranged. This is a configuration that can be obtained by reducing the number of terminal pins  832  to which the coil  1  is connected. In order to reduce the number of terminal pins  832 , a structure of the stator  300  and a winding method may be changed. 
       FIG.  17    is a view illustrating a modified example of the terminal cover,  FIG.  18    is a view illustrating the hole of the terminal cover illustrated in  FIG.  17   , and  FIG.  19    is a view illustrating a modified example of the terminal. 
     Referring to  FIGS.  17  and  18   , a terminal cover  800  includes a plurality of holes  811   a , and the holes  811   a  may be disposed at regular intervals over an entire first body  811 . Specifically, the plurality of holes  811   a  may be disposed at regular intervals in a circumferential direction with respect to a center of a body part  810 . 
     A position of the hole  811   a  corresponds to a position of a terminal pin  832 . The hole  811   a  may include a rounded periphery to correspond to a curved shape of a terminal pin  832 . 
     Referring to  FIGS.  18  and  19   , as a modified example of the terminal  830 , three terminals  830  for U, V and W phases are provided, and a total of twelve terminal pins  832  may be disposed. 
       FIG.  20    is a view illustrating a stator including an insulator, and  FIG.  21    is a view illustrating the insulator. 
     Referring to  FIGS.  20  and  21   , a stator  300  of a motor according to the embodiment may be embodied as a deployable stator in which adjacent stator cores are connected to each other. In the deployable stator, stator cores may be unfolded on a plane in the form of a band. When the stator cores are unfolded in the form of a band, an open slot is expanded, so that not only a space factor of the coil  1  is increased, but also it is possible to perform the winding operation for the adjacent stator cores at once. For example, when the winding operation is performed with one coil  1  for two adjacent stator cores, the fusing points can be reduced by half. 
     In this case, the coil  1  wound around the stator  300  may be guided to be wound around a rear side (outer side) of the insulator  310 . Specifically, the insulator  310  may include an inner guide  311  and an outer guide  312 . The inner guide  311  and the outer guide  312  serve to inhibit the coil  1  wound around the insulator  310  from being detached. The outer guide  312  includes an extended portion  312   a  extended upward. In addition, a groove  312   b  may be formed in the extended portion  312   a . The coil  1  wound around the stator  300  may be inserted into the groove  312   b , and thus the coil  1  may be guided outward of the insulator  310 . 
       FIG.  22    is a view illustrating a terminal and a sealing cover. 
     Referring to  FIG.  22   , a sealing cover  700  may include a terminal  600  of a power part connected to an external power source. A terminal body  831  is disposed to be elongated in an axial direction of the rotational shaft  100  and is connected to the terminal  600  of the power part. 
     As described above, the router for a motor and the motor including the same according to one exemplary embodiment of the present disclosure have been described in detail with reference to the accompanying drawings. 
     The above description describes only exemplarily the technical idea of the present disclosure, and those skilled in the art to which the present disclosure pertains may variously modify, change, and substitute the present disclosure without departing from the essential characteristics of the disclosure. Therefore, the embodiments disclosed in the present disclosure and the accompanying drawings are intended to describe rather than limit the technical spirit of the present disclosure, and the scope of the technical idea of the present disclosure is not limited by the embodiments and the accompanying drawings. The scope of protection of the present disclosure should be construed according to the following claims, and all technical ideas within the scope of equivalents thereof should be construed as being included in the scope of the present disclosure. 
     
       
         
           
               
             
               
                   
               
               
                 [Reference numerals] 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
            
               
                   
                  10: Motor, 
                 100: Rotational shaft 
               
               
                   
                 200: Rotor 
                 300: Stator, 
               
               
                   
                 400: Router 
                 410: Body 
               
               
                   
                 411: First coil guide 
                 420: Guide part 
               
            
           
           
               
               
            
               
                   
                 421: Second coil guide 
               
            
           
           
               
               
               
            
               
                   
                 500: Housing 
                 600: Terminal of power part 
               
               
                   
                 700: Sealing cover 
                 800: Terminal cover 
               
               
                   
                 810: Body part 
                 820: Side part 
               
               
                   
                 830: Terminal