JPS6026035Y2 - Rotating roller unit with clutch - Google Patents

Description

[Detailed description of the invention] This invention relates to a rotary roller unit with a clutch having a shell-shaped outer ring in which a clutch and a sliding bearing are integrated via a roller, and is mainly used for copying machine paper feed rollers, etc. Some companies provide rotary roller units with clutches used in

Most conventional rotating rollers with clutches do not have the clutch and sliding bearing as a unit, and the clutch is located on the user's side, and the outer circumference of the outer ring (clutch raceway) of the clutch itself In this method, a bushing with a wall thickness that is almost the same as the width of the outer ring of the clutch was fitted, and a roller made of rubber or plastic was press-fitted to the outer circumference of the bushing to be integrated.
Not only was it troublesome to manage, but the axial length of the clutched roller itself was affected by the outer ring width of the clutch, so it was difficult to use the clutched roller at locations with different axial lengths. When applying this method, there was an inconvenience in that clutches with different widths of clutch outer rings had to be arranged, and bearings that supported rotation of the shaft were attached to both ends of the roller separately from the clutched roller. There were also many problems in assembly and handling.

This idea was aimed at eliminating the above-mentioned conventional inconveniences and problems. Specifically, a roller whose inner circumferential surface was reinforced with a bushing was formed in advance, and the central part of the roller was A clutch with a shell-shaped outer ring is press-fitted and fixed, and compound sliding bearings (sliding bearings that can receive both radial load and thrust load) are press-fitted onto the inner peripheral surface of the bushings located on both ends of the clutch. By fixing and holding these components, making the entire unit into a unit, and adjusting the axial length of the composite sliding bearing, the axial width of the roller unit can be adjusted to any desired width without changing the outer ring width of the clutch itself. In addition, the outer diameter occupied by the clutch itself is reduced to make the entire clutch more compact.

Next, two typical embodiments of the rotary roller unit with a clutch of this invention shown in FIGS. 1 and 2 will be explained. 1 is a roller mainly made of an elastic body such as rubber or plastic, roller clutch, 3,3
is an annular composite sliding bearing made of a sliding bearing material, and its inner peripheral surface can receive radial loads, and the end surfaces can receive thrust loads.

21 is a retainer.

The roller 1 is formed by the aforementioned cylindrical elastic member 12 made of rubber, plastic, etc., which is integrated with the outer peripheral surface of a metal bushing 11 by baking.

The roller clutch 2 has a shell-shaped outer ring 2 that has an uneven clutch raceway 22 necessary for a roller clutch in the center.
This is a well-known shell type one-way clutch with 3.

The composite sliding bearings 3, 3 are made of a metal material or a plastic material known as a composite sliding bearing, and their axial length is such that one end is 12 mm wider than the end surface 13 of the roller 1. It is formed with a dimension that protrudes only by a certain amount.

As shown in FIG.
The clutch 2 is press-fitted into the central part of the clutch 2, and the composite sliding bearings 3, 3 are press-fitted and fixed to both ends of the clutch 2, respectively, to form a single unit, thereby forming the rotary roller with a clutch of this invention.

FIG. 2 shows another embodiment in which the cross-sectional shape of the composite sliding bearing is L-shaped, the area of the outer surface (sliding surface) is increased, and the positioning in the axial direction with respect to the roller 1 is ensured. Other than composite plain bearings, the above-mentioned
This is the same as the embodiment shown in the figure.

Since the rotary roller unit with a clutch of this invention is constructed as described above, it is not only easy to handle and assemble into the device, but also the axial length l of the roller unit! 3 is a composite sliding bearing 3 that is attached to the roller 1 without changing the outer ring width of the roller clutch 2 itself.
, 3 can be arbitrarily determined by adjusting 2 with the axial protrusion amount of 3.

That is, by changing the axial length of the composite sliding bearing, the length of the roller unit can be freely adjusted.

Therefore, the axial length of the location where the roller unit is used,
For example, a roller unit suitable for 14 can be easily provided.

In addition, the roller's precision is improved because its deformation and out-of-roundness are corrected by relatively rigid compound sliding bearings press-fitted into both ends of the roller. Because it is press-fitted and integrated, the roundness and deformation of the outer ring of the clutch are corrected, improving the accuracy of the clutch itself, and at the same time making the entire unit more compact.

[Brief explanation of drawings]

FIG. 1 is a longitudinal cross-sectional side view of a main part showing one embodiment of a rotary roller unit with a clutch of this invention, and FIG. 2 is a view corresponding to FIG. 1 showing another embodiment of the invention. In the symbols of the embodiment, 1 is a roller, 2 is a clutch, 3 is a sliding bearing, and 4 is a shaft.

Claims (1)

[Scope of utility model registration request] A clutch having a shell-shaped outer ring in the center of a roller made of rubber, plastic, etc. whose inner circumferential surface is reinforced with a metal bushing, and on both ends of the clutch, the end face is axially more A rotating roller unit with a clutch that has a composite sliding bearing that protrudes from the top.