Apparatus for controlling throttle valve and manufacturing method for the same and motor

Abstract

An apparatus for controlling a throttle valve has a body member made of resin. The body member contains a motor for controlling a throttle valve. The motor has a yoke as a one of components thereof. The yoke is exposed to an intake passage at a slightly upstream side of the throttle valve. According to the arrangement, heat radiation from the motor is improved by intake airflow, and the throttle valve can be prevented from an icing malfunction.

1 - 13 . (Canceled).  
   
   
       14 . An apparatus for controlling a throttle valve for regulating an amount of air flowing in an intake pipe of an internal combustion engine, comprising: 
 a body member made of a resin which has a concavity for housing a motor component; and    a bearing holder member made of the same resin of the body member which is formed to cover the concavity and supports a bearing member for supporting an end of a rotation shaft of the motor component, wherein the bearing holder member is fixed on the body member by a welding.    
   
   
       15 . The apparatus for controlling the throttle valve according to  claim 14 , wherein the motor component includes: 
 a yoke fixed in the concavity formed on the body member;    a magnet attached on an inside of the yoke;    an armature having a rotation shaft which inserted into an inside of the yoke where the magnet is attached;    bearing member which supports end of the rotation shaft, and is supported on the body member; and    bearing member which supports another end of the rotation shaft, and is supported on the bearing holder member.    
   
   
       16 . The apparatus for controlling the throttle valve according to  claim 14 , wherein a portion where the body member and the bearing holder member are fixed by the welding is an inclined surface which is arranged so that molten resin flows outside of the concavity.  
   
   
       17 . The apparatus for controlling the throttle valve according to  claim 14 , wherein the body member provides a dam portion by an extended part thereof, the dam portion being located on an inside of a portion where the body member and the bearing holder member are fixed by the welding, the dam portion damming molten resin.  
   
   
       18 . The apparatus for controlling the throttle valve according  claim 14 , wherein the body member and the bearing holder member provides a positioning means by engaging portions thereof, the positioning means being capable of aligning the rotation shaft and the bearing member supported on the bearing holder member.  
   
   
       19 . The apparatus for controlling the throttle valve according to  claim 14 , wherein the bearing member supported on the bearing holder member supports an output side or a counter-output side end of the rotation shaft.  
   
   
       20 . The motor apparatus, comprising: 
 a body member made of a resin having a concavity for housing a motor component; and    a bearing holder member fixed on the body member, which supports a bearing member for supporting an end of a rotation shaft of the motor component, wherein the body member and the bearing member are made of the same resin, and the bearing holder member is fixed on the body member by a welding.    
   
   
       21 - 24 . (Canceled).