Axial fan frame with electrical connection structure

Abstract

An axial fan frame with electrical connection structure includes a frame and a circuit board. The frame includes a shaft holder having a receiving recess located near an air outlet of the frame for receiving the circuit board therein, a plurality of stator blades connected to between the shaft holder and the frame, a groove formed on an outer surface of the frame for receiving an external cord assembly therein, and a communicating passage located between the receiving recess of the shaft holder and the groove of the frame to communicate them with each other. The circuit board has an outward extended arm, which has a metal contact end for connecting to an electrical connector provided at an end of the external cord assembly. Therefore, the external cord assembly can be quickly electrically connected to the circuit board in an automated manner without the need of welding manually.

1 . An axial fan frame with electrical connection structure comprising:
 a circuit board having an arm outward extended from a periphery thereof and a free end provided with metal contacts to serve as a metal contact end and   a frame defining two open ends, which are an air inlet and an air outlet; the frame including a groove provided on an outer surface thereof for receiving an external cord assembly therein; a shaft holder provided at the air outlet and internally defining a receiving recess for receiving the circuit board therein; a plurality of stator blades connected to between the shaft holder and the frame; and a communicating passage formed on one of the stator blades to communicate the shaft holder with the frame; and   wherein an end of the groove located at the air outlet is shaped to receive an electrical connector provided at an end of the external cord assembly, the communicating passage has two ends communicating with the receiving recess and the groove, respectively, and the arm of the circuit board is set in the communicating passage with the metal contact end of the arm extended into the groove to connect to the electrical connector of the external cord assembly.   
     
     
         2 . The axial fan frame with electrical connection structure as claimed in  claim 1 , wherein the groove is provided with a notch, and the communicating passage communicates with the groove via the notch. 
     
     
         3 . (canceled) 
     
     
         4 . The axial fan frame with electrical connection structure as claimed in  claim 1 , wherein the arm has an end connected to the circuit board and another end being the free end that serves as the metal contact end; the metal contact end having an upper surface and a lower surface, and at least one metal contact being selectively provided on one or both of the upper and the lower surface of the metal contact end. 
     
     
         5 . The axial fan frame with electrical connection structure as claimed in  claim 1 , wherein the external cord assembly includes a cord; the electrical connector being connected to an end of the cord, and the cord being fitted in and extended along the groove. 
     
     
         6 . The axial fan frame with electrical connection structure as claimed in  claim 2 , wherein the electrical connector includes at least one protruded portion and an end of the groove located near the air outlet is provided with at least one cavity; and the at least one protruded portion and the at least one cavity being correspondingly engaged with one another to form a mortise-tenon joint structure. 
     
     
         7 . The axial fan frame with electrical connection structure as claimed in  claim 1 , wherein the receiving recess of the shaft holder and the communicating passage are covered and closed by a cover to protect the circuit board and the arm from being damaged. 
     
     
         8 . The axial fan frame with electrical connection structure as claimed in  claim 7 , wherein the cover includes a main portion for correspondingly covering and closing the receiving recess, and a projected portion for correspondingly covering and closing the communicating passage.