JP2009063145A - Roller bearing - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a roller bearing, which efficiently prevent rusting and deterioration, can be surely actuated for a long time, does not need maintenance, and can be manufactured inexpensively. <P>SOLUTION: This roller bearing comprises at least one pair of supporting bars, a plurality of shafts fixed to at least one of the supporting bars at both ends at a predetermined interval, and pipe-shaped rollers, which are rotatably mounted to the plurality of shafts, which have an inside diameter dimension larger than an outside diameter dimension of the shafts, and whose bottom ends project downward from bottom ends of the pair of supporting bars. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention mainly relates to a roller bearing used in a portion for sliding a joint plate.

Conventional roller bearings that use a roller with a bearing or a synthetic resin material are used.

However, when it is used in places where people pass, such as floor joint devices, it must be repaired over a period of time due to bearing rusting or deterioration of the synthetic resin material. There was a drawback of not becoming.
nothing special

    In view of the above-mentioned conventional drawbacks, the present invention provides a roller bearing that can efficiently prevent rusting and deterioration, can be reliably operated for a long period of time, and does not require maintenance, and can be manufactured at low cost. It is an object.

The above and other objects and novel features of the present invention will become more fully apparent when the following description is read in conjunction with the accompanying drawings.
However, the drawings are for explanation only and do not limit the technical scope of the present invention.

In order to achieve the above object, the present invention provides at least a pair of support bars, a plurality of shafts having both ends fixed to the at least one pair of support bars at a predetermined interval, and a plurality of shafts that are rotatable on the plurality of shafts. A roller bearing is configured by the attached pipe-shaped roller having a larger inner diameter than the outer diameter of the shaft and a lower end protruding downward from the lower ends of the pair of support bars.

  As is clear from the above description, the present invention has the following effects.

(1) At least a pair of support bars, a plurality of shafts having both end portions fixed to the at least one pair of support bars at a predetermined interval, and outer shafts rotatably attached to the plurality of shafts. Since the inner diameter is larger than the diameter, and the lower end consists of a pipe-shaped roller that protrudes downward from the lower ends of the pair of support bars, the pipe-shaped roller rusts and rotates even after a long period of time. It can be reliably prevented from becoming impossible.
Therefore, it can be reliably operated for a long time.

(2) According to the above (1), since the structure is simple and no bearings are used, it can be easily manufactured at low cost.

(3) According to the above (1), since it operates reliably for a long period of time, it is not necessary to perform maintenance for a certain period of time as in the prior art, and it can be used in an optimum state for the part used in the installed state.

(4) Claim 2 can also be used in an optimum state for a portion that moves on the floor surface, while obtaining the same effects as in the above (1) to (3).

(5) The third aspect of the invention can obtain the same effects as the above (1) to (3), and can be optimally used for a portion where the pair of support bars are fixed and used.

  Hereinafter, the present invention will be described in detail with reference to the best mode for carrying out the invention shown in the drawings.

  In the first preferred embodiment for carrying out the present invention shown in FIGS. 1 to 5, reference numeral 1 denotes a roller bearing according to the present invention. The roller bearing 1 includes a pair of support bars 2 and 2 and a pair of support bars. 2 and 2, a plurality of shafts 3 whose both ends are fixed at a predetermined interval, and an inner diameter dimension larger than the outer diameter dimension of the shafts 3 rotatably attached to the plurality of shafts 3, respectively, The outer diameter dimension is larger than the height dimension of the support bars 2 and 2, and the lower end portion is constituted by a pipe-like roller 4 protruding downward from the lower end portions of the pair of support bars 2 and 2.

As shown in FIGS. 4 and 5, the roller bearing 1 configured in this manner can be slid in the front / rear / left / right direction, and can be slid and moved to a lower part of the opening 7 of one building 6 of the floor joint device 5. The guide piece 10 is housed in a channel-like rail 8 fixed in a substantially horizontal direction and is formed so as to be supported by a plurality of rollers 4 at the end of the joint plate 9.
For this reason, when one building 6 and the other building 11 are swung in different front and rear directions due to an earthquake, the guide piece 10 of the joint plate 9 slides on the plurality of rollers 4 and absorbs the wobbling motion.
In addition, since the roller 4 having an inner diameter larger than the outer diameter of the shaft 3 is attached, it can be prevented from rusting and becoming unable to move, and can be reliably prevented from being deteriorated due to secular change. .
[Different forms for carrying out the invention]

  Next, different modes for carrying out the present invention shown in FIGS. 6 to 15 will be described. In the description of these different modes for carrying out the present invention, the same components as those in the best mode for carrying out the present invention are designated by the same reference numerals and redundant description is omitted. To do.

The second embodiment for carrying out the present invention shown in FIGS. 6 to 9 is mainly different from the best first embodiment for carrying out the present invention in that the lower end portion is connected as a pair of support bars. In view of the use of the channel material 12, the roller support 1A constructed by using the channel material 12 as a pair of support bars 2A, 2A is the best first for carrying out the present invention. The effect similar to a form is acquired, and a pair of support bar 2A, 2A can be used as a rail.
The pipe-shaped roller 4 that is rotatably attached to the plurality of shafts 3 may be in contact with the bottom surface 12a of the channel material 12 or may float. In short, the roller 4 may be rotated so that the roller 4 can rotate. So long as it is attached to the shaft 3.

The third embodiment for carrying out the present invention shown in FIGS. 10 to 15 is mainly different from the best first embodiment for carrying out the present invention in that there are five pairs so as to form four pairs. The roller bearing 1B formed in this way is the other side of the floor joint device 5A in that a plurality of shafts 3 having both ends fixed to the contact bars 2, 2, 2, 2, 2 are fixed. It is arranged between the joint plate support recess 13 formed in the floor frame 11a on the joint part side of the building 11 and the joint plate 9, and is used when the joint plate 9 smoothly slides in the left-right direction.
Further, as shown in FIG. 15, it is used when a load 14 is loaded and moved. In this case, each pipe-like roller 4 can move in the vertical direction even if the floor surface is uneven, so that it can move smoothly.

In the above embodiments of the present invention, the shafts 3 are fixed to the support bars 2 and 2A. However, the present invention is not limited to this, and the support bars 2 and 2A can be fixed only at positions. It may be attached to.

  The present invention is used in the industry of manufacturing roller bearings.

The top view of the best 1st form for implementing this invention. The side view of the best 1st form for implementing this invention. Sectional drawing which follows the 3-3 line of FIG. The top view of the use condition of the best 1st form for implementing this invention. Sectional drawing which follows the 5-5 line of FIG. The top view of the 2nd form for carrying out the present invention. The front view of the 2nd form for carrying out the present invention. Sectional drawing which follows the 8-8 line of FIG. Sectional drawing of the use condition of the 2nd form for implementing this invention. The top view of the 3rd form for carrying out the present invention. The side view of the 3rd form for carrying out the present invention. Sectional drawing which follows the 12-12 line of FIG. The top view of the use condition of the 3rd form for implementing this invention. Sectional drawing which follows the 14-14 line | wire of FIG. Explanatory drawing of another use condition of the 3rd form for implementing this invention.

Explanation of symbols

1, 1A, 1B: roller support, 2, 2A: support bar,
3: shaft, 4: roller,
5, 5A: Floor joint device, 6: One building,
7: opening, 8: rail,
9: Joint plate, 10: Guide piece,
11: The other building, 12: Channel material,
13: Joint plate support recess, 14: Luggage.

Claims (3)

From at least a pair of support bars, a plurality of shafts having both ends fixed to the at least one pair of support bars at predetermined intervals, and outer diameter dimensions of the shafts rotatably attached to the plurality of shafts, respectively. The roller bearing is characterized in that the inner diameter dimension is large and the lower end portion is composed of a pipe-like roller protruding downward from the lower end portions of the pair of support bars. 2. The roller bearing according to claim 1, wherein the roller support is disposed so that an outer peripheral portion of the roller protrudes from a lower end portion of the pair of support bars. The roller support according to claim 1, wherein the pair of support bars are formed of a channel material that does not contact the lower end of the roller.

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