Attachment structure for sliding scraper, and linear guide device

Patent metadata

Field	Value
Publication number	US-10550883-B2
Application number	US-201716301800-A
Country	US
Kind code	B2
Filing date	Mar 23, 2017
Priority date	May 16, 2016
Publication date	Feb 4, 2020
Grant date	Feb 4, 2020

Abstract

A slider slidably straddling over a guide rail, an attachment plate having a square U-shape attached to an end surface of the slider and including opposite vertical frames and a horizontal frame connecting the vertical frames, and a sliding scraper fitted in a square U-shape groove of the attachment plate and including opposite vertical portions and a horizontal portion connecting the opposite vertical portions, and a groove portion that is in sliding contact with the guide rail are provided, and protrusion portions at which the vertical frames and the vertical portions are in abutment with each other are provided an open end portion of an inner side surface of each of the opposite vertical frames of the attachment plate or an end portion of an outer side surface of each of the opposite vertical portions of the sliding scraper, the end portion facing the relevant open end portion.

First claim

The invention claimed is:

1. An attachment structure for a sliding scraper, the attachment structure comprising:
a slider slidably straddling over a guide rail;
an attachment plate having a square U-shape attached to an end surface of the slider and including opposite vertical frames and a horizontal frame connecting the opposite vertical frames; and
a sliding scraper fitted in a square U-shape groove of the attachment plate and including opposite vertical portions and a horizontal portion connecting the opposite vertical portions, and a groove portion that is in sliding contact with the guide rail,
wherein at at least an open end portion of an inner side surface of each of the opposite vertical frames of the attachment plate or at least an end portion of an outer side surface of each of the opposite vertical portions of the sliding scraper, the end portion facing the open end portion, a protrusion portion at which the relevant vertical frame and the relevant vertical portion are in abutment with each other is provided, and
wherein the sliding scraper includes an elastic material including, at an inner surface of the groove portion, a sliding layer in which fiber and an elastomer are integrated.

2. The attachment structure for a sliding scraper according to claim 1 , wherein at an inner surface of the horizontal frame of the attachment plate or an outer surface of the horizontal portion, the outer surface facing the horizontal frame, a bulge portion at which the horizontal frame and the horizontal portion are in abutment with each other is provided.

3. The attachment structure for a sliding scraper according to claim 2 , wherein a recess portion is formed in the outer surface of the horizontal portion of the sliding scraper, the outer surface facing the horizontal frame of the attachment plate, and the bulge portion formed at the inner surface of the horizontal frame of the attachment plate is in abutment with the recess portion.

4. The attachment structure for a sliding scraper according to claim 1 , wherein the sliding layer includes a fabric material with the elastomer impregnated therein.

5. The attachment structure for a sliding scraper according to claim 1 , wherein the sliding layer includes a flat surface parallel to a direction of movement of the slider.

6. The attachment structure for a sliding scraper according to claim 1 , wherein the sliding layer is provided at the inner surface of the groove portion and respective lower end surfaces of the opposite vertical portions.

7. A linear guide device comprising a guide rail and a slider slidably straddling over the guide rail, a sliding scraper including a groove portion that is in sliding contact with the guide rail being fitted in a square U-shape groove of an attachment plate attached to an end surface in a sliding direction of the slider,
wherein the sliding scraper includes the attachment structure according to claim 1 .

Assignees

• Nitta Corp
• Thk Co Ltd

Inventors

• Ishizaki Yoji
• Matsumoto Atsushi
• Aoki Kenichiro
• Furusawa Ryuji
• IWASHIRO Sho

Classifications

• F16C33/76

  of ball or roller bearings · CPC title

• F16C29/08

  Arrangements for covering or protecting the ways {(protective coverings for parts of machine tools B23Q11/08)} · CPC title

• F16C2322/39

  General buildup of machine tools, e.g. spindles, slides, actuators · CPC title

• F16C29/0609

  of the ends of the bearing body or carriage where the rolling elements change direction, e.g. end caps · CPC title

• F16C29/086 Primary

  Seals being essentially U-shaped, e.g. for a U-shaped carriage · CPC title