PACKAGING STRUCTURE FOR A MOTOR CASING

Abstract

A packaging structure for a motor casing, comprising an upper cover, a lower cover and a flange, wherein the upper cover and the lower cover are separately located over two sides of a motor spindle, the upper cover and the lower cover are combined into the motor casing for receiving a rotor, a stator, a bearing and a control circuit board of a motor, the upper cover and the lower cover are fastened by at least one first bolt, the first bolt passes through the upper cover in a radial direction of the motor to screw into a threaded hole of the lower cover, the first bolt evades positions of both the rotor and the stator, the flange is a circular member which binds a front end of the combined upper cover and lower cover, and the flange is fastened onto the front end of both the upper cover and lower cover by second bolts.

Claims

1. A packaging structure for a motor casing, comprising an upper cover, a lower cover and a flange, wherein the upper cover and the lower cover are separately located over two sides of a motor spindle, the upper cover and the lower cover are combined into the motor casing for receiving a rotor, a stator, a bearing and a control circuit board of a motor, the upper cover and the lower cover are fastened by at least one first bolt, the first bolt passes through the upper cover in a radial direction of the motor to screw into a threaded hole of the lower cover, the first bolt evades positions of both the rotor and the stator, the flange is a circular member which binds a front end of the combined upper cover and lower cover, and the flange is fastened onto the front end of both the upper cover and lower cover by second bolts.

2. The packaging structure of claim 1, wherein both the upper cover and the lower cover are made of metal.

3. The packaging structure of claim 1, wherein both the upper cover and the lower cover are formed with a trough structure corresponding to the stator, the bearing and the control circuit board.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0010] FIG. 1 is an assembled view of packaging structure of a motor casing of an embodiment of the invention;

[0011] FIG. 2 is an exploded view of packaging structure of a motor casing of an embodiment of the invention;

[0012] FIG. 3 is a cross-sectional view of the upper cover;

[0013] FIG. 4 is a left view of FIG. 3;

[0014] FIG. 5 is a cross-sectional view of the lower cover;

[0015] FIG. 6 is a left view of FIG. 5; and

[0016] FIG. 7 is a longitudinally sectional view of the brushless DC motor of the invention.

DETAILED DESCRIPTION OF THE INVENTION

[0017] In the following description, the terms upper, lower, left and right are based on the directions shown in the figures if no particular indication.

[0018] Please refer to FIGS. 1 and 2, which are an assembled view and an exploded view of packaging structure of a motor casing of an embodiment of the invention, respectively. The packaging structure for a motor casing of the invention includes an upper cover 10, a lower cover 20 and a flange 30. The upper cover 10 and the lower cover 20 are separately located over two sides of a motor axis L. The upper cover 10 and the lower cover 20 are combined into the motor casing for receiving a rotor 40, a stator 50, a bearing 60 and a control circuit board 70 (see FIG. 7).

[0019] As shown in FIG. 1, the upper cover 10 and the lower cover 20 are fastened by at least one first bolt 11. The first bolt 11 passes through the upper cover 10 in a radial direction of the motor to screw into a threaded hole 21 of the lower cover 20. The first bolt 11 evades positions of both the rotor 40 and the stator 50. In a preferred embodiment, both the upper cover 10 and the lower cover 20 are made of metal to form a firm motor casing. Please refer to FIGS. 3-6. An embodiment of both the upper cover 10 and the lower cover 20 is of a cylindrical shape. Both the upper cover 10 and the lower cover 20 are formed with a trough structure 12, 22 corresponding to the stator 50, the bearing 60 and the control circuit board 70.

[0020] The flange 30 is a circular member which binds a front end of the combined upper cover 10 and lower cover 20 (see FIG. 1). The flange 30 is fastened onto the front end of both the upper cover 10 and lower cover 20 by second bolts 31.

[0021] The packaging structure of the invention adopts a side-by-side type. When assembling, repairing or adjusting, only remove the flange 30 and the first bolt 11 first, both the upper cover 10 and the lower cover 20, which constitute the casing of the motor, can be directly separated in a radial direction of the motor. Even, the relative position between the control circuit board 70 and the rotor 40 can be adjusted without removing the bearing 60. Thus, assembly, repair and adjustment can be easily implemented.

[0022] It will be appreciated by persons skilled in the art that the above embodiment has been described by way of example only and not in any limitative sense, and that various alterations and modifications are possible without departure from the scope of the disclosed example as defined by the appended claims.