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Electromotive linear drive

A technology of linear drive and transmission device, applied in the direction of electromechanical devices, transmission devices, electric components, etc., can solve the problems of inability to use the drive device, high cost, etc., and achieve the effect of high inherent rigidity

Inactive Publication Date: 2010-01-27
DEWERTOKIN GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This results in a variety of types, which makes it impossible to use the drive due to the comparatively high costs, especially for adjusting the backrest of a sofa chair

Method used

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  • Electromotive linear drive
  • Electromotive linear drive
  • Electromotive linear drive

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0041] The electric linear drive 10 shown in the drawing is designed in particular to be installed in an armchair in order to move adjustable furniture components by means of an accessory (not shown). The electric linear drive 10 is equipped with a drive motor 11 in the form of a DC motor, which is connected to a reduction gear, as will be described in more detail. A threaded spindle 12 is driven by the reduction transmission, on which a threaded spindle nut 13 is placed, which is prevented from rotating and can only move in the longitudinal direction of the threaded spindle 12 . The linear drive 10 comprises an elongated housing 14 on the outside, the end region of which is designed so that the reduction gear can be mounted on the side facing the drive motor 11 and the free end of the spindle 12 bears on the opposite end regions.

[0042] Furthermore, the elongated housing 14 is shaped such that it has fixed mechanical end stops formed between the end regions of the housing ...

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PUM

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Abstract

An electromotive linear drive (10), in particular for adjusting parts of an item of furniture, having a multi-part housing (14) which is produced from plastic in an injection-molding process and in which are mounted at least one drive train and a block-shaped spindle nut (13) which engages at least partially around the housing (14) and / or at least partially into the housing, should be designed such that the structural design is extremely simple and can furthermore, for installation in particular into a chair, be produced in a compact and also cheap manner from as few components as possible. According to the invention, the housing (14) is formed from at least two housing parts (14a and 14b) and has sliding tracks for the spindle nut (13), wherein at least the thread flights of the spindle (12) are arranged outside the housing (14). In one preferred embodiment, the housing (14) is arranged below the region of the spindle (12) in relation to the assembled position of the electromotive linear drive. The housing parts (14a and 14b) forming the housing (14) are of identical or similar, preferably shell-shaped, design in cross section.

Description

technical field [0001] The invention relates to an electric linear drive, in particular for adjusting furniture components, which has a multi-part plastic injection-molded housing, at least one drive motor and at least one rotary drive Spindle spindles on which are each attached a locked spindle nut designed in the form of a slider, which at least partially surrounds the engagement housing and / or at least partially engages in the housing. Background technique [0002] In a preferred embodiment, the electric linear drive is a so-called independent drive with a drive motor and with a rotatably drivable spindle. The electric linear drive is used to adjust, for example, the backrest part or the foot part of a slatted cushion or the backrest and / or the foot part of an armchair. [0003] In known electric linear drives, the spindle is located between the two legs of a hollow profile rail section. The hollow profile section is made of steel. The length of the profile rail sectio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H25/20H02K7/06A47C20/04
CPCH02K7/06A47C20/041F16H25/20F16H2025/2031F16H2025/204A47C20/042Y10T74/18688Y10T74/18712Y10T74/18656
Inventor A·罗伊特尔C·米勒
Owner DEWERTOKIN GMBH