Methods for manufacturing a spring, a spring brake, and a spring brake comprising a spring

A manufacturing method and brake technology, applied in the manufacture of springs and spring brakes and the field of spring brakes with springs, can solve problems such as noise, and achieve the effect of reducing the risk of unqualified springs

Active Publication Date: 2019-01-04
SOMFY ACTIVITES SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the spring brakes of the prior art are noisy, especially when lowering the home automation control curtain

Method used

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  • Methods for manufacturing a spring, a spring brake, and a spring brake comprising a spring
  • Methods for manufacturing a spring, a spring brake, and a spring brake comprising a spring
  • Methods for manufacturing a spring, a spring brake, and a spring brake comprising a spring

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Embodiment Construction

[0023] figure 1 with 2 The spring 1 shown in FIG. 1 includes a spring wire 2 formed in a spiral profile, that is, spirally wound. Therefore, the reed wire 2 is wound with a plurality of coils 3i contained in a spiral profile. The spiral profile is arranged to be coaxial with the common main axis O1 of the spring 1, so that each coil 3i is approximately centered on the main axis O1. Each coil 3i defines a coil axis Xi coaxial with the associated coil 3i, such as figure 2 with 3 Shown. When manufacturing the spring 1, it is desirable that the coil axis Xi of each coil is ideally coaxial with the main axis O1, but this is not necessarily the case in practice, because there may be defects in the spring 1. The helical profile of the spring 1 is used to extend in a right cylinder with a circular base coaxial with the main axis O1.

[0024] The so-called "spring coil" refers to a part of the one wire 2, which is contained in the spiral profile of the spring 1, and extends coaxially w...

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Abstract

The invention concerns a method for manufacturing a spring (1) for a spring brake (14), comprising a shaping and cutting step f) comprising the following sub-steps: - f1) shaping a raw wire into a coil with a plurality of raw turns, the raw wire having: raw portions that extend from the end of the raw wire over at least one raw turn, and an intermediate portion between the raw portions, - f2) separating the first raw portion and the second raw portion of the raw wire by cutting, after implementing sub-step f1), and - f3) shaping a first tab (5), at a first end of the intermediate portion, after sub-step f1), and - f4) shaping a second tab (7), at a second end of the intermediate portion opposite the first end, after sub-step f1).

Description

Technical field [0001] The present invention relates to a method of manufacturing a spring, a method of manufacturing a spring brake, and a spring brake having a spring. Such spring brakes belong, for example, to roller shutters, blinds or more generally geared motors for home automation control curtains. Background technique [0002] EP-A1-2230415 and EP-A1-2267330 both propose an electric drive mechanism for driving residential automation control curtains. Among them, the electric drive mechanism is equipped with a spring brake. The spring brake has a coil spring and a friction drum, which are pressed radially against Friction drum. The brake also has: [0003] -An input member, which is connected to the drive motor on the one hand and the first pawl of the spring on the other hand, so as to drive the spring to rotate in a direction that reduces the contact force between the spring and the friction drum, and [0004] -The output piece, which is simultaneously connected to the se...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21F11/00G01B11/08
CPCB21F11/005G01B11/08B21F3/02B21F35/00E06B9/72F16F1/04G01B11/24F16D49/04
Inventor E·拉加德
Owner SOMFY ACTIVITES SA
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