Protection and guidance apparatus for cable and the like

Abstract

Provided is a cable or the like protection and guide device, which can suppress the sliding contact noise by reliably limiting a linear position and a bending position exhibited during the movement of the cable or the like, and at the same time, which can reduce a setting space by suppressing the impact noise and wear of a connecting pin piece on a connecting pin hole even if the height size of the link body is decreased. A connecting pin piece, convexly provided on a link body, which forms a cable or the like protection and guide device, includes stopper surfaces, which are parallel to the upper edge center portion and the lower edge center portion of the side plates and are oppositely disposed across a bending center point and a pair of front, and rear arc-shaped outer circumferential surfaces, which are oppositely disposed across the bending center point. Further a connecting pin hole, concavely provided in said link body, includes a pair of linear position maintaining surfaces, which are parallel to the upper edge center portion and the lower edge center portion of the side plate, and are oppositely disposed across the bending center point, bending position limiting surfaces, which are oppositely disposed across the bending center point in a plane symmetry, and a pair of arc-shaped inner circumferential surfaces oppositely disposed across said bending center point in a plane symmetry to be brought into sliding contact with said connecting pin pieces.

Description

technical field [0001] The present invention relates to a protection and guiding device for cables or the like, which accommodates cables or the like comprising flexible bodies such as cables, hoses or the like for feeding mobile Energy such as electric power, compressed air is supplied, and the device protects and guides the cable or the like stably and reliably even during the movement of the mobile machine. Background technique [0002] As an example of a protecting and guiding device for protecting and guiding a cable or the like including a flexible body such as a cable, a hose or the like, known is a protecting and guiding chain, Wherein the lower ends of a pair of oppositely arranged uprights form a "U" shape in front view by means of a bottom plate, shaft holes are provided in the arc-shaped front of each upright, and a plurality of chain link members are each equipped with a shaft and make the shaft Projecting from the outer side surface of the upright to the arcua...

AI Technical Summary

Problems solved by technology

[0004] However, in the conventional protection and guide chain disclosed in the above-mentioned Japanese Patent Publication No. 3115995, the outer diameter dimension or the shaft shape of the protruding shaft at the rear part of the arcuate part of the upright is limited by the height dimension of the link members and the stop. Jaw configurations are limited so they are formed with relatively small outer diameter dimensions and shaft shapes

Therefore, when the chain is used for a long period of time, the sliding wear between the shaft protruding from the arcuate rear portion of the upright member and the shaft hole provided at the arcuate front portion of the upright member advances, so that the following problems occur: Longitudinal tensile strength is significantly reduced due to sliding wear between the shaft and the shaft bore

In addition, there is the problem that the base plate spans far from the center of the bend, which acts beside the shaft and the shaft hole due to the inability to reduce the height dimension of the link body, so that the cables contained in the connected link members The wire or the like swings greatly in the vertical direction, so the cable or the like and the base plate come into sliding contact with each other and become prone to wear

[0005] In the case of reducing the installation space of the protection and guide chain, the height dimension of the chain link member is specially designed to be very small, because the stop mechanism including the stop pawl and the stop hole must ensure enough space for the stop mechanism to operate, The above-mentioned shaft outer diameter size and shaft shape have a further compact structure so that the problem arises that the shaft protruding at the arcuate rear portion of the upright can be damaged

In addition, when the above-mentioned shaft outer diameter size and shaft shape are designed to be large in size for long-term durable use, the shaft outer diameter size must be reduced, and then the surface pressure of the dog pawl received from the stopper hole portion increases. , so the pawls are prone to wear and damage

In addition, there is a problem that the impact noise of the stopper claws becomes more noticeable because the stopper claws are placed in the radial direction away from the vicinity of the curved center part, and the collision speed with respect to the stopper hole part increases and the collision energy increases.

[0006] Also, since the stop mechanism is provided at only one location away from the bending center point, the bending loads generated in the adjacent link bodies when bending the chain must be distributed and cannot avoid having a predominantly pivoting function excessive load on the shaft

So there is the problem of acceleration of the axis destruction

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