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Waterproof structure

A waterproof structure, rotating shaft technology, applied in the direction of engine sealing, engine components, mechanical equipment, etc., can solve the problem of elongated outflow path, etc., to achieve the effect of improving waterproof performance

Active Publication Date: 2013-09-04
SODICK CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the through-holes at the root of each protrusion are not on the same line in the radial direction, thereby elongating the outflow path

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] figure 1 Showing the waterproof structure of the rotating shaft penetration part related to Example 1, an annular recess is formed on the housing, an annular protrusion is formed on the flange, and an annular recess is formed to connect the annular recesses to each other. The structure of the connected part of the connection, figure 1 (a) shows a view viewed from the outside of the casing along the axial direction of the rotating shaft, wherein the flange portion is indicated by a dotted line, figure 1 (a) for figure 1 (b) The top view of the E-E direction, figure 1 (b) for figure 1 (a) Cross-sectional view along line D-D.

[0034] The waterproof structure of the rotating shaft penetration part related to Embodiment 1 includes: a casing 10, a through hole 10a provided on the casing 10, a rotating shaft 20 rotatably inserted in the through hole 10a, and a casing 10 outside. The flange portion 30 is fixed to the rotating shaft 20 and rotates together. In this waterp...

Embodiment 2

[0060] The waterproof structure of the rotating shaft penetration portion related to the second embodiment basically has the same configuration and effects as those of the above-mentioned first embodiment. For this reason, the description of the points that are the same as in the first embodiment is omitted. Hereinafter, the configuration and effects unique to the second embodiment will be described.

[0061] image 3 Showing the waterproof structure of the rotating shaft penetration part related to Example 2, an annular concave portion is formed on the casing, an annular convex portion is formed on the flange portion, and a notch is formed on the annular convex portion. The structure of the connected part constituted by the part, image 3 (a) shows a view viewed from the outside of the casing along the axial direction of the rotating shaft, wherein the flange portion is indicated by a dotted line, image 3 (a) for image 3 (b) The top view of the E-E direction, image 3 ...

Embodiment 3

[0067] The waterproof structure of the rotating shaft penetration portion related to the third embodiment basically has the same configuration and effects as those of the above-mentioned first embodiment. For this reason, the description of the points that are the same as in the first embodiment is omitted. Hereinafter, the configuration and effects unique to Embodiment 3 will be described.

[0068] Figure 5 Showing the waterproof structure of the rotating shaft penetrating part related to Example 3, an annular convex portion is formed on the housing, an annular concave portion is formed on the flange portion, and an annular concave portion is formed that can The structure of interconnected connected parts, Figure 5 (a) shows a view viewed from the outside of the casing along the axial direction of the rotating shaft, wherein the flange portion is indicated by a dotted line, Figure 5 (a) for Figure 5 (b) The top view of the E-E direction, Figure 5 (b) for Figure 5 ...

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PUM

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Abstract

The invention discloses a waterproof structure. The waterproof structure comprises a basket body (10), a through hole (10a), a rotating shaft (20), and a flange portion (30), wherein the through hole (10a) is formed in the basket body (10), the rotating shaft (20) is inserted into the through hole (10a) in a penetrating mode and rotates freely in the through hole (10a), the flange portion (30) is arranged on the outer side of the basket body (10) and fixed on the rotating shaft (20) and rotates along with the rotating shaft (20). A gap (g2) is formed between the outer side of the basket body (10) and the flange portion (30), and a labyrinth structure is axially arranged in the gap (g2). Furthermore, the labyrinth structure comprises a plurality of annular concave portions and convex portions, wherein the concave portions and the convex portions are arranged on the side, provided with the gap (g2), of the basket body (10) and the centers of the annular concave portions and convex portions and the axis of the rotating shaft (20) are identical. The labyrinth structure further comprises a plurality of annular concave portions and convex portions, wherein the concave portions and the convex portions are arranged on the side, provided with the gap (g2), of the flange portion (30), and the centers of the annular concave portions and convex portions and the axis of the rotating shaft (20) are identical.

Description

technical field [0001] The present invention relates to a waterproof structure in which a rotating shaft penetration portion for a rotating shaft is rotatably inserted into a through hole formed in a housing. Background technique [0002] In the prior art, for example, as a waterproof structure for the penetrating portion of a rotatable rotating shaft such as a motor rotating shaft, there is a rotating shaft penetrating portion as shown in Patent Document 1 (Japanese Utility Model Publication No. Hei 06-006690). Waterproof structure. In the waterproof structure of the rotating shaft penetration portion disclosed in Patent Document 1, an oil slinger is fixed to the rotating shaft on the outer surface of the bracket through which the rotating shaft penetrates, and an oil slinger is placed between the bracket and the oil slinger. A labyrinth structure is formed between them, that is, an annular recess is formed on the surface of the bracket opposite to the oil flinger, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/447
Inventor 新家一朗村井满
Owner SODICK CO LTD
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