JPS6110013Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a bearing device for a worm gear, a drum, etc., and aims to provide an excellent bearing device with a simple structure and less axial play.

Generally, when worm gears, drums, etc. are pivotally mounted, shaft portions 2 and 3 provided at both ends of the worm gear, drum, etc. 1 are attached to bearing ribs formed on a mounting board 4 of a cabinet, etc., as shown in Fig. 1. It is often inserted into the through holes 7 and 8 of 5 and 6 and pivotally attached. However, in this type of device, when the worm gear, drum, etc. 1 and the mounting board 4 are formed of different materials, the bearing ribs 5, 6 and the worm gear, in order to absorb the difference due to thermal expansion,
It is necessary to form a considerable distance A between the worm gear and the drum etc. 1, resulting in the problem that the worm gear, drum etc. 1 shakes significantly in the axial direction.

The present invention eliminates the above-mentioned conventional drawbacks, and provides an excellent bearing device with a simple structure and less axial play.

Hereinafter, the bearing device of the present invention will be explained with reference to drawings of one embodiment.

In the figure, 10 is a rod-shaped rotating body such as a worm gear or a drum, 11 and 12 are shaft parts integrally formed at both ends of the rotating body 10, and 13 is the rotating body 1.
14 is a step portion integrally formed at the boundary between the rotating body 10 and the shaft portion 12; 15 is a mounting board 16 for a cabinet, chassis, etc.; , 17 are bearing ribs integrally formed on the mounting board 15 so as to face each other, and 18 and 19 are ribs 16 and 17.
Through-holes 20 are formed for inserting the shaft parts, respectively, and locking ribs 20 are formed integrally with the mounting board 15 so as to be close to the ribs 16 and face each other.

In addition, one bearing rib 17 and the locking rib 2
0 have tapered portions 21 and 22 formed at their tips, respectively.

In the above embodiment, when the rotating body 10 is pivotally mounted, the shaft portion 11 is first inserted into the through hole 18 formed in the bearing rib 16 as shown in FIG. Curved bearing rib 17
The shaft portion 12 may be inserted into the through hole 19 formed in the hole 19 . In this way, the flange 13 formed at one end of the rotating body 10 is inserted between the bearing rib 16 and the locking rib 20, and the axial wobbling of the rotating body 10 is significantly reduced.

That is, when the rotating body 10 and the mounting board 15 are made of different materials, the difference in thermal expansion coefficients causes the stepped portion 14 to strongly abut against the side surface of the bearing rib 17, resulting in smooth rotation. In order to absorb this, it is necessary to form a considerably large gap B between the step portion 14 and the rib 17 in advance, but according to the above embodiment, the locking rib 20 The locking rib 20 and the flange 13 are configured to prevent rattling in the axial direction.
The distance C between the rotor 10 and the rotor 10 can be made considerably smaller, and the axial wobbling of the rotating body 10 can be made very small.

As is clear from the above embodiments, the bearing device of the present invention is not only constructed so that the shaft portions formed at both ends of the rotating body are pivotally connected by bearing ribs, but also attached to the outer periphery of one end of the rotating body. Forms the flange,
This collar is configured to prevent movement in the axial direction by the one locking rib and the locking rib provided adjacent to the locking rib. The rattling can be significantly reduced compared to conventional products, which increases the commercial value and is extremely advantageous in practice.

[Brief explanation of the drawing]

FIG. 1 is a sectional side view of a conventional bearing device, FIG. 2 is a sectional side view of an embodiment of the bearing device of the present invention, and FIG. 3 is a sectional side view showing an assembly process of the same device. 10... Rotating body, 11, 12... Shaft part, 13...
...Flame part, 14...Step part, 15...Mounting board, 1
6, 17... Bearing rib, 18, 19... Through hole,
20...Locking rib, 21, 22...Tapered portion.

Claims (1)

[Scope of utility model registration request] The shaft portions formed at both ends of the rotating body are inserted into the through holes of the mutually opposing bearing ribs formed on the mounting board for pivotal attachment, and a collar portion is integrally formed on the outer periphery of one end of the rotating body. A bearing device in which the collar portion is configured to be sandwiched between one of the locking ribs and a locking rib that is integrally formed on the mounting board adjacent to the one locking rib.