JPH0314912A - Rolling bearing - Google Patents

Abstract

PURPOSE:To decrease starting torque by providing extreme infrared radiation ceramics on at least one of bearing components so that a required section may be heated with small energy and lubricating oil may be softened at a low temperature. CONSTITUTION:Extreme infrared radiation ceramics 6 is provided in a rolling bearing such as deep groove ball bearing, and various materials such as zirconia material are used for this ceramics 6. To the extreme infrared radiation ceramics 6, a heater wire such as nichrome wire is brought in contact or is embedded therein and by energizing the heater wire, extreme infrared radiation ceramics 6 is heated. By heating it for a prescribed time, infrared radiation is emitted from the ceramics 6, and by the infrared radiation, the grease in the rolling bearing is efficiently heated to keep it at a prescribed viscosity. It is thus possible to soften lubricating oil such as grease early even at a low temperature, so as to improve the performance of a bearing.

Description

[Detailed description of the invention] <Industrial application field> The present invention relates to rolling bearings.

Conventional technology> In rolling bearings installed in general equipment, lubricating oil such as grease is applied to parts where rolling friction or sliding friction occurs, and this lubricating oil is used to reduce rotational torque. There is.

<Problems to be Solved by the Invention> By the way, in rolling bearings installed in equipment used outdoors, automobiles, etc., lubricating oil such as grease inside tends to become highly viscous when the surrounding temperature is low. may solidify, which increases the starting torque of rolling bearings and adversely affects the performance of the equipment used. As a countermeasure to soften the lubricating oil that has become highly viscous, the entire rolling bearing. Alternatively, heating the area around the rolling bearing may be considered, but in that case, things that are not desired to be heated would also be heated, and there would be disadvantages such as a large amount of thermal energy being required.

The present invention was devised in view of these circumstances, and aims to efficiently soften lubricant oil by heating only the minimum necessary portion.

<i! $! Means for Solving the Problem> In order to achieve the above object, the present invention takes the following structure.

The rolling bearing of the present invention is characterized in that at least one of the bearing components is provided with far-infrared emitting ceramics.

<Function> According to the above structure, if only the far-infrared emitting ceramic is heated, far-infrared rays will be emitted from the ceramic.
By that inside the bearing? A? The f4 oil will be heated efficiently. In general, polymer compounds such as grease and lubricating oil absorb far infrared rays well, and the energy of far infrared rays is converted into vibrational energy of molecules, resulting in an increase in the temperature of grease, lubricating oil, etc.

Embodiments> Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

Embodiments of the present invention are shown in FIGS. 1 to 5.

The diagrams use deep groove ball bearings as an example, and each diagram shows the same parts. The parts are given the same symbols. In each figure, 1 is an inner ring, 2 is an outer ring, 3 is a ball, 4 is a so-called crown-shaped retainer, and 5 is attached to an outer ring 2 to form a non-contact sealed portion on the outer peripheral surface of the inner ring 1. A temporary metal shield, 6 indicates a far infrared ray emitting device.

In Fig. 1, the outside part of the temporary shield 5, and in Fig. 2, the outer ring 2.
Far-infrared radiation is applied to almost the entire outer circumferential surface of the holder 2, in the central part of the outer periphery of the outer holder 2 in FIG. 3, on both end surfaces of the outer holder 2 in FIG. An example is given in which ceramic socks 6 are respectively provided.

The far-infrared emitting ceramic 6 may be made of various other materials, such as zirconia materials.
The far-infrared emitting ceramic 6 can also be formed by baking paint or powdered material onto a predetermined portion.

Although not shown, a heater wire, such as a nichrome wire, is brought into contact with the far-infrared emitting ceramic 6, or it is provided inside the ceramics 6, and the iI! ! It is conceivable to heat the far-infrared emitting ceramic 6 by applying electricity.

In other words, if the far-infrared emitting ceramic 6 is heated for a predetermined period of time by the heater wire, far-infrared rays will be emitted from the ceramic fuse 6, and the lubricating oil such as grease sealed inside the rolling bearing will be irradiated by this far-infrared rays. It is heated efficiently and the lubricating oil is maintained at a predetermined viscosity.

Note that the present invention is not limited to the structure described in the embodiments, and can be implemented by providing the far-infrared radiation emitting cera-nox 6 at any location of the bearing construction component. Further, it goes without saying that the present invention can be applied to general bearings in addition to the above-mentioned deep groove ball bearings.

Effects of the Invention> As explained above, according to the present invention, necessary parts can be heated with a small amount of energy, and lubricating oil can be efficiently and quickly softened at low temperatures such as in winter. Therefore, the starting torque of rolling bearings can be reduced, contributing to improved performance of equipment using bearings.

[Brief explanation of the drawing]

1 to 5 relate to various embodiments of the present invention,
Both are vertical side views showing the upper half of the rolling bearing. 6... Far-infrared radiation emitting ceramic.

Claims (1)

[Claims] (1) A rolling bearing characterized in that at least one of the bearing components is provided with far-infrared emitting ceramics.