JPH09177764A - Rotary roller unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the workability by facilitating the assembly of a rotary roller to a supporting frame. SOLUTION: A rotary roller unit is of the mechanism in which a rotary roller 25 fitted to an inner surface of an annular roller member 26 is rotatably supported by a supporting frame 3 by inserting a shaft part 16 in a bearing 8 and fixing it to the supporting frame 3 in a condition where a side plate 27 and a spacer 15 are assembled to an outer side face. A projection 29 to lock an outer circumferential edge part 18 of the side plate 27 inserted in an annular recessed groove 20 on the outer side face of the rotary roller 25 is formed on an inner surface of the annular recessed groove 20, and an inner circumferential edge part 30 of the side plate 27 is erected on the outer side in the axial direction to fit and fix the spacer 15.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary roller unit, and more particularly to a rotary roller unit having a bearing structure used for a cable guide ring, a carriage of a transporter, or the like.

[0002]

2. Description of the Related Art For example, as shown in FIG. 4, a guide roller unit 4 in which a rotating roller 2 is axially supported by a supporting frame 3 for guiding a cable 1 such as an optical fiber cable.
May be used.

Specifically, as shown in FIG. 5, the rotary roller 2 constituting the guide roller unit 4 is arranged between the inner ring 5 of two rolling bearings 8 whose main elements are an inner ring 5, an outer ring 6 and a ball 7. The spacer 9 is arranged, and the outer ring 6 of the bearing 8 is arranged.
The main part is a structure in which a resinous annular roller member 11 having a cable guide surface 10 formed on the outer peripheral surface thereof is fitted and fixed. In the drawing, 13 is a hollow portion of the annular roller member 11.

When the rotary roller 2 is assembled to the support frame 3, as shown in FIG. 6, an annular side plate 14 for preventing foreign matter from entering and a side plate 1 thereof.
And an annular spacer 15 which prevents 4 from interfering with the support frame 3.

The side plate 14 described above has a shaft portion 16 at the center thereof.
Has a shape in which a hole 17 through which is inserted is formed, and an outer peripheral edge portion 18 is bent toward the inside (rotating roller side). On the other hand, a concave portion 19 is formed on the outer surface of the rotary roller 2 so that the side plate 14 is fitted to the rotary roller 2 so as to be substantially flush with the rotary roller 2. An annular groove 20 into which 18 is fitted is formed. Further, a concave step portion 21 into which the spacer 15 is fitted is formed on the inner peripheral edge portion of the side plate 14.

On the other hand, the support frame 3 is composed of a bottom portion 22 fixed at a predetermined position by bolts and the like, and a side wall portion 23 standing upright from the bottom portion 22.
3 is formed with a hole 24 through which the shaft portion 16 is inserted.

The assembly of the rotary roller 2 to the support frame 3 is performed in the following manner. That is, the side plate 14 is housed and arranged in the recess 19 of the rotating roller 2, and
The outer peripheral edge portion 18 of 4 is fitted in the annular concave groove 20 of the concave portion 19, and the spacer 15 is fitted in the concave step portion 21 of the side plate 14, and the rotary roller 2, the side plate 14, and the spacer 15
Is inserted between the side wall portions 23 of the support frame 3. In that state, the shaft portion 16 is inserted into the hole 24 of the side wall portion 23 of the support frame 3, and the shaft portion 16 is fastened and fixed to the support frame 3 with bolts or the like, so that finally, as shown in FIG. The roller unit 4 is assembled.

[0008]

In the conventional guide roller unit 4 described above, when the rotary roller 2 is assembled to the support frame 3, the support frame 3 is assembled with the side plate 14 and the spacer 15 assembled to the rotary roller 2. It must be inserted between the side wall portions 23, and the shaft portion 16 must be inserted thereover. At the time of this insertion, since the side plate 14 and the spacer 15 are separate from the rotating roller 2, the problem that the side plate 14 and the spacer 15 are detached from the rotating roller 2 is likely to occur.

Such assembling is very time-consuming for an operator, and if he or she tries to work carefully, it takes a long working time, which requires skill of the operator.
Further, if it is attempted not to spend time on work, work mistakes will occur successively and reliability will be greatly reduced.

Therefore, the present invention has been proposed in view of the above problems, and an object of the present invention is to provide a rotary roller unit capable of easily assembling a rotary roller to a support frame and improving workability. To provide.

[0011]

As a technical means for achieving the above object, the present invention provides a rotary roller having a bearing fitted to an inner diameter surface of an annular roller member, and an annular side plate and a gap between the outer surface and the annular roller. In the rotary roller unit rotatably supported by the support frame, the shaft portion is passed through the bearing and fixed to the support frame in a state where the seat is assembled, so that the shaft portion is fitted into the annular groove on the outer surface of the rotary roller. A protrusion that locks the outer peripheral edge of the side plate is formed on the inner surface of the annular groove, and the inner peripheral edge of the side plate is erected axially outward to fix the spacer. To do.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a guide roller unit will be described with reference to FIGS.
It should be noted that the same or corresponding portions as those in FIGS. 4 to 7 are designated by the same reference numerals, and duplicate description will be omitted.

The feature of the present invention resides in the annular roller member 26 which constitutes the rotary roller 25 and the side plate 27 which covers the outer surface of the rotary roller 25 as shown in FIG.

As shown in FIG. 2, the rotary roller 25 constituting the guide roller unit 28 of the present invention has a spacer between the inner rings 5 of the two rolling bearings 8 whose main elements are the inner ring 5, the outer ring 6 and the balls 7. 9, the outer ring 6 of the bearing 8
The main part is a structure in which an annular roller member 26 made of resin and having the cable guide surface 10 formed on the outer peripheral surface thereof is fitted and fixed.

A side plate 27 is provided on the outer surface of the rotating roller 25.
Form a recess 19 that fits in substantially flush with the rotary roller 25, and form an annular groove 20 into which the outer peripheral edge 18 of the side plate 27 fits, at the periphery of the recess 19.
The outer peripheral edge portion 1 of the side plate 27 is provided on the inner diameter surface of the annular groove 20.
A protrusion 29 for locking 8 is formed. On the other hand, the inner peripheral edge portion 30 of the side plate 27 is erected outward in the axial direction.

The outer diameter of the side plate 27 is set to the rotary roller 25.
By making the inner diameter of the projection 29 in the annular groove 20 slightly larger and applying an external force when assembling the side plate 27, the outer peripheral edge portion 18 of the side plate 27 can be locked to the projection 29. . Further, the outer diameter dimension of the inner diameter peripheral edge portion 30 erected on the outer side in the axial direction of the side plate 27 is substantially equal to the inner diameter dimension of the spacer 15, and when the spacer 15 is assembled, the spacer 15 is attached to the inner peripheral edge of the side plate 27. The size is such that it can be fitted and fixed by being pushed into the portion 30.

Further, the above-mentioned projection 29 is the annular groove 20.
Besides being formed in a ring shape over the entire circumference thereof, it may be formed in a plurality of positions along the circumferential direction of the annular groove 20.
Similarly, the inner peripheral edge portion 30 may have a tongue-like shape formed at a plurality of positions other than the cylindrical shape.

Prior to assembling the rotating roller 25 to the support frame 3, as shown in FIG.
The side plate 27 and the spacer 15 are attached to the. That is, the side plate 27 is fitted into the recess 19 on the outer side surface of the rotating roller 25,
The outer peripheral edge portion 18 of the side plate 27 is connected to the annular concave groove 2 of the concave portion 19.
Insert at 0. At this time, since the outer peripheral edge portion 18 of the side plate 27 is locked by the protrusion 29 of the annular groove 20, the side plate 27 is difficult to separate from the rotating roller 25. Next, the spacer 15 is fitted and fixed to the inner peripheral edge portion 30 of the side plate 27. This makes it difficult for the spacer 15 to be separated from the side plate 27.

The rotary roller 25 is assembled to the support frame 3 in the following manner. That is, as shown in FIG. 3, the assembly including the rotating roller 25, the side plate 27, and the spacer 15 is inserted between the side wall portions 23 of the support frame 3. At this time, as described above, since the side plate 27 and the spacer 15 are integrally assembled and fitted and fixed to the rotary roller 25, they are difficult to separate from the rotary roller 25, and the insertion work becomes easy. In that state, the shaft portion 16 is attached to the support frame 3
The guide roller unit 28 shown in FIG. 1 is finally assembled by inserting the shaft portion 16 into the hole 24 of the side wall portion 23 and fastening and fixing the shaft portion 16 to the support frame 3 with bolts or the like.

In the above-described embodiment, the guide roller unit 28 which pivotally supports the rotating roller 25 constituted by the annular roller member 26 having the cable guide surface 10 on the support frame 3 has been described. The present invention is not limited to the above, and can be applied to a rotating roller unit used for other purposes such as a dolly of a carrier.

[0021]

According to the rotary roller unit of the present invention, a protrusion is formed on the inner surface of the annular groove to lock the outer peripheral edge of the side plate fitted into the annular groove on the outer surface of the rotary roller. , The inner peripheral edge of the side plate is erected outward in the axial direction and the spacer is fitted and fixed, so that the side plate and the spacer are integrally assembled to the rotary roller before the rotary roller is assembled to the support frame. Therefore, the side plates and spacers are difficult to separate from the rotating roller. Therefore, it does not take much time to assemble the rotation roller to the support frame, the skill level of the operator is not required, the work time is shortened, the work mistakes are reduced, and the workability and the reliability are significantly improved.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment in which the present invention is applied to a guide roller unit.

FIG. 2 is a cross-sectional view showing a state where side plates and spacers are assembled to the rotary roller of FIG.

FIG. 3 is a cross-sectional view showing a state where a rotary roller having a side plate and a spacer is attached to a support frame.

FIG. 4 is a front view showing a schematic configuration of a guide roller unit.

FIG. 5 is a cross-sectional view showing a rotary roller that constitutes a conventional guide roller unit.

FIG. 6 is a sectional view showing a state in which a rotating roller is assembled to a support frame.

FIG. 7 is a sectional view showing a specific configuration of a conventional guide roller unit.

[Explanation of symbols]

 3 Support Frame 8 Bearing 15 Spacer 16 Shaft 18 Outer Diameter Perimeter 20 Annular Groove 25 Rotating Roller 26 Annular Roller Member 27 Side Plate 29 Protrusion 30 Inner Diameter Perimeter

Claims (1)

[Claims] 1. A rotary roller having a bearing fitted to an inner diameter surface of an annular roller member, and an annular side plate and a spacer are attached to the outer surface of the rotary roller, and a shaft portion is passed through the bearing to be fixed to a support frame. As a result, in the rotary roller unit rotatably supported by the support frame, a protrusion for locking the outer peripheral edge portion of the side plate fitted in the annular groove on the outer surface of the rotating roller is provided on the inner surface of the annular groove. A rotary roller unit, wherein the rotary plate unit is formed, and an inner peripheral edge portion of the side plate is erected outward in the axial direction and the spacer is fitted and fixed.