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Device for fixing trolley

A technology for fixing pulleys and pulleys, which can be used in hoisting devices, portable lifting devices, transportation and packaging, etc., and can solve the problem that one hand cannot be used for grasping and supporting

Inactive Publication Date: 2007-11-21
NICE SPA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] This solution has the disadvantage that the operation of changing the pulley requires precise insertion of a screwdriver, for which the installation operator must use one hand while removing the pulley with the other
[0009] The importance of this operation is easily understood if one considers that the geared motor is frequently replaced once it has been installed and from here on in an inaccessible location, for example in a recess in a wall that can only be reached by means of a ladder. Inconvenience and danger of (the operator) not being able to use even one hand to grasp

Method used

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  • Device for fixing trolley
  • Device for fixing trolley

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Experimental program
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Embodiment Construction

[0016] In the figure, the fixing device 10 according to the invention is mounted on a geared motor 11 . The device 10 comprises at one end a turning pin 12 with a groove 17 having a coaxial cylindrical cavity 14 which is open outwards at the free end of the turning pin 12 . The cavity 14 has side surfaces 16 and a bottom surface 18 .

[0017] The rotary pin 12 is coupled to the motor via a reducer (not shown) of the gear motor 11, and has a function of transmitting the rotational motion of the motor. The pulley 40 (see FIG. 1 ) has an external toothing 42 shaped so as to mesh with an inner portion of a roller blind roller (not shown) in operation, and an internal toothing 44 forming In the central through hole 45 and corresponding to the groove 17 of the turning pin 12 on which the pulley is to be mounted. The toothing 44 comprises two longitudinal grooves 46 a , 46 b at diametrically opposite positions extending from one edge of the toothing 44 over about half the depth of ...

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PUM

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Abstract

A device (10) for fixing a pulley (40) comprises a rotating pin (12) on the outer surface of which the pulley (40) may be fixed, said rotating pin (12) has at least one locking element (50) movable between a first locking position where it retains the pulley (40) and a second releasing position where it does not retain it, the at least one locking element (50) is coupled with at least one element (60) which can be operated by the user so that the displacement of said at least one element (60) which can be operated by the user causes the displacement of said at least one locking element (50) between said first and second position.

Description

technical field [0001] The invention relates to a device for securing pulleys, in particular for geared motors for roller blinds. Background technique [0002] Pulleys are used in many applications to transmit rotational motion, lift loads, change the direction of cables, etc. [0003] Typically, the pulley (or runner in general) is permanently fixed to the pin on which the pulley rotates, or is otherwise fixed to the pin by means of fixing means ranging from cotter pins to bolted fastening system. The pulley often has to be removed from the pin in a very quick and simple operation, for example to be replaced with a different pulley. [0004] An example of this exists in the field of tubular gear motors, which will be referenced below by way of example. [0005] Tubular gear motors for moving and / or automatically operating roller blinds such as blinds, shades and curtains are currently designed to be inserted into the drums on which the blinds are wound (and unwound). Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H55/36B60J1/20
CPCB60J1/2019Y10T403/32483F16H55/36
Inventor A·马劳萨L·加尔贝尔蒂
Owner NICE SPA