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Secured fixing screw

A technology of anti-loosening and screw shank, which is applied in the direction of bolts, nuts, threaded fasteners, etc., and can solve problems such as high cost

Inactive Publication Date: 2008-01-23
SCHAEFFLER KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This known locking and transport securing of connecting screws consists of a complex sheet metal part, the machining of which entails high costs
Another disadvantage is that the connecting screw cannot be centered directly in the bearing ring but is centered via the central receiving hole of the sealing disc, which is supported on the bearing inner ring

Method used

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  • Secured fixing screw
  • Secured fixing screw

Examples

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Embodiment Construction

[0017] FIG. 1 shows a hexagon socket head cap screw, which can be used as a connecting screw 1a for a structural part of a traction tool drive. A screw shank 2 has a threaded section 3 and a further smooth-surfaced section 4 which extends between the screw head 5 and the threaded section 3 . The threaded section 3 is provided with a cylindrical sleeve 6a, which serves to secure the connecting screw 1a, on this threaded section, for example, a sleeve is inserted into the receiving hole for the connecting screw 1a and thus locally narrows the receiving diameter. Due to the narrowed diameter and the elastic sleeve 6a, the connecting screw 1a is fastened in the receiving opening in a loose-fixed manner.

[0018] FIG. 2 shows the connection screw 1b in combination with a sleeve 6b shrink-fitted using thermal technology. This type of fixing ensures that the sleeve 6b is immovably fixed on the threaded section 3 of the connecting screw 1b. In order to allow the connecting screw 1b ...

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Abstract

The mechanism secures a screw (1d) of a tension roller (15) during transport or to prevent it from coming loose. The mechanism has a sleeve (6d) having an elastic material that is fixed onto the shank (2) of a screw (1d). When fitted, the sleeve is elastically deformed and is supported against a central bore (19) of the spacer element (17), ensuring that the entire assembly consisting of the tension roller (15), centering disc (18), spacer and screw is held together.

Description

technical field [0001] The invention relates to an anti-loosening and conveying safety device for connecting screws, through which the structural components of the driving device of the traction tool are fixed. The connecting screw is preferably used to fasten a tensioning pulley, a deflection pulley or a tensioning device of the traction means drive. Background technique [0002] Such a loosening and transport safety device is known from DE 298 20 776 U1. This fastening device for a tensioning pulley or pulley of a traction means drive includes a connecting screw, which includes a mechanism for delivering the safety device. In this case, the connecting screw passes through a receiving bore of the inner ring of the rolling bearing on which the idler pulley or belt pulley is rotatably mounted. A sealing disc is provided as a safety device, by means of which the rolling bearing of the tensioning pulley or the belt pulley is effectively protected from coarse dirt such as spla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16B41/00
CPCF16H7/1281F16C41/04F16C13/006F16B41/002F16H7/20F16C35/073F16C19/06F16C2361/63
Inventor T·斯坦梅斯
Owner SCHAEFFLER KG
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