Sealing structure of cabin for building machinery

Abstract

A sealing structure of cabin for building machinery can surely prevent the intrusion of noise or dust through a slit formed in a grommet or the clearance of adjacent hoses in a bundle of hydraulic hoses or the like. Hydraulic hoses are inserted to cylindrical seal members one by one. In the state where a plurality of the hydraulic hoses after insertion is bundled, the circumferential part thereof is retained by a tape-like seal member and inserted to an insert hole provided in the grommet.

Description

technical field [0001] The present invention relates to a sealing structure for a construction machine cab used in a construction machine such as a hydraulic excavator. Background technique [0002] Generally, in a construction machine such as a hydraulic excavator, a hydraulic hose, an electric harness, and the like extending from an operating lever in the cab are piped or wired to the outside while penetrating the floor and a partition. In this case, a through hole is formed in the ground or the like, and an eyelet is fitted in the through hole to hold the above-mentioned hydraulic hose or the like. [0003] Figure 5 (a) and Figure 5 (b) Respectively represent the top view and the C-C cross-sectional view of the widely used eyelet. As shown in the figure, the structure of the conventional grommet 50 is composed of a grommet body 52 having a groove 51 on the outer periphery that engages with a through hole formed on the ground, and a grommet body 52 that blocks the gromm...

AI Technical Summary

Problems solved by technology

[0005] But when Figure 5 In the grommet 50 of the existing structure described in , when the hydraulic hose etc. The diaphragm 53 is turned up, and there will always be a gap in the peripheral part of the inserted hydraulic hose, etc., resulting in the problem of noise or dust entering through the gap.

[0006] On the other hand, in the technology disclosed in Utility Model No. 254175, which is cited as the prior art related to the present invention, since the outer peripheral surface of the densely packed tube such as the hydraulic hose is bound, it is elastically held by the spacer protection member. Therefore, the intrusion of noise or dust can be prevented to a certain extent, but the gap between the adjacent hydraulic hoses cannot be completely sealed, so there is a problem that the intrusion of noise, dust, etc. from the gap cannot be reliably prevented.

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