JPH01268437A - Motor bearing device - Google Patents

Abstract

PURPOSE:To facilitate assembling of an apparatus and to improve the workability thereof by fitting a plane plate having a ball bearing presser bar spring to one end face of a motor housing and by mounting a rotor having ball bearings at both ends of a rotating shaft. CONSTITUTION:Both end faces 6 of a motor housing 5 are bent inward cylindrically to form spaces 8 for receiving ball bearings 7. In the other bearing receiving space 8, a ball bearing presser 1 formed by raising a part 4 of annular plane sheet 2 and by giving elasticity to said part are held between said end faces 6 and sheets 10 having shaft holes and fastened by a rivet 12. Then, a rotor R with said ball bearings 7 fastened at both ends of a rotating shaft 9 is being biased to the left in the drawing while said sheets 10 are riveted 12 on said end faces 6. Thus, it is possible to perform assembling of an apparatus easily and to improve the workability thereof.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a bearing device for an electric motor used in electric powered equipment such as ventilation fans, which has a structure in which pressure is applied to a ball bearing by a ball bearing presser spring.9 BACKGROUND OF THE INVENTION Conventionally, this type of electric motor bearing device has been known, although no specific literature can be cited, as shown in FIG.
The structure is such that pressure is applied to the ball bearing presser spring 103.

Problems to be Solved by the Invention By the way, in the conventional electric motor bearing device, when assembling the electric motor, the worker drops the ball bearing presser spring 103 into the electric motor, causing the electric motor to collapse! There have been cases where the electric motor has been damaged and the electric motor has become defective.

The present invention has been made in consideration of the above-mentioned conventional problems, and aims to prevent the ball bearing presser spring from falling, thereby preventing the occurrence of defective products, and improving the workability of motor assembly.

Means for Solving the Problems In order to solve this problem, the present invention provides a ball shaft storage portion formed in the center of the end face of the motor jacket, and a ball bearing fixed to the end face of the motor jacket, with ball bearings fixed to both sides. a thin plate 2 that holds the ball bearing in the axial direction of the rotating shaft; a ball bearing presser spring having a fixing part held between the motor jacket end face and the thin plate on the outer circumferential side and a spring part on the inner circumferential side; The ball bearing presser spring is integrally fixed to the motor jacket and the thin plate, and the spring portion presses the end face of one ball bearing to constitute a bearing device for the motor.

With this configuration, by fixing the ball bearing presser spring to the motor jacket in advance, it is possible to prevent the ball bearing presser spring from falling during the motor assembly work.

EXAMPLE Hereinafter, an example of the present invention will be explained based on FIGS. 1 and 2.

As shown in the figure, the ball bearing presser spring 1 has a fixing flat part 2 on the outer periphery, this fixing flat part 2 has a plurality of round holes 3 for fixing, and the inner periphery has a plurality of round holes 3 for fixing. has a cut and raised portion 4 that serves as a spring. The motor jacket 5 has a ball bearing accommodating portion 8 for accommodating a ball bearing 7 at the center of the end face 6 by press working. A thin plate 1 that holds a ball bearing 7 between the end face 6 of the motor jacket 6 and the axial direction of a rotating shaft 9 with ball bearings T fixed on both sides.
The fixing flat part 2 of the ball bearing presser spring 1 is sandwiched between the ball bearing presser spring 1 and the round hole 3 of the fixing flat part 2 of the ball bearing presser spring 1.

Round hole 11 in end face 6 of motor jacket 6 and round hole 1 in thin plate 10
The motor jacket 6, the ball bearing presser spring 1, and the thin plate 1o are joined and fixed by a rivet 13 passing through the rivet 2. In the rotating shaft 9, the end surface 14 of one ball bearing 7 is pressed by the cut and raised portion 4 of the ball bearing presser spring 1, and the end surface 15 of the other ball bearing 7 is pressed.
It is supported inside the motor in direct contact with the thin plate 10.

When assembling the electric motor with the above configuration, since the ball bearing presser spring 1 is integrally fixed to the motor jacket 6, the rotary shaft 9 is supported inside the two motor jackets 6, and the end openings are joined. This prevents a worker from accidentally dropping the ball bearing presser spring 1 into the inside of the motor during assembly of the motor, such as during work of fixing the ball bearing.

Effects of the Invention As is clear from the above description of the embodiments, according to the present invention, by fixing the ball bearing presser spring to the motor jacket in advance, an operator can attach the ball bearing presser spring to the motor during motor assembly work. This prevents the motor from falling into the interior, thereby preventing motor defects and improving the workability of motor assembly.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of the use of a bearing device for an electric motor according to an embodiment of the present invention, Fig. 2 is a perspective view of a ball bearing presser spring of the bearing device of the same motor, and Fig. 3 is a use of a conventional bearing device for an electric motor. FIG. DESCRIPTION OF SYMBOLS 1...Ball bearing presser spring, 2...Fixing flat part, 4...Cut and raised part, 6...Motor jacket, 6... ... End face, 7 ... Ball bearing, 8 ... Ball bearing storage section, 9 ... Rotating shaft, 1o ... Thin plate.

Claims (1)

[Claims] a ball shaft storage portion formed in the center of the end face of the motor jacket, a thin plate fixed to the end face of the motor jacket and holding the ball bearing in the axial direction of the rotating shaft with ball bearings fixed to both sides, and an outer peripheral side. and a ball bearing presser spring having a fixed part held between the end face of the motor jacket and the thin plate and a spring part on the inner peripheral side,
The ball bearing presser spring is integrally fixed to the motor jacket and the thin plate, and the spring portion presses an end face of one ball bearing.