Electromechanical actuator, related home automation device and method of manufacturing the same
A technology for actuators and home use, which is applied in the field of motorized drive devices, electromechanical actuators, and the manufacture of such actuators. It can solve the problems of high cost, high manufacturing cost, and high implementation cost, and achieve rapid cost and simple manufacturing. Effect
Active Publication Date: 2020-05-05
SOMFY ACTIVITES SA
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Problems solved by technology
[0009] However, this motor has the disadvantage that the technical solution of using two bearings each comprising rolling elements is expensive to implement
[0010] The use of the first bearing as a small (low-bulk) needle bearing is also costly
[0011] Furthermore, the installation of the first bearing inside the first annular housing of the stator body can be complicated if the first bearing is a needle bearing in which the outer ring is mounted in the first annular housing of the stator body by tightening adjustment
[0012] Furthermore, the assembly tolerances of the first and second bearings in the first and second annular housings of the stator body and the dimensional tolerances of the first and second annular housings to the rotor shaft are precise in order to limit the stress on the rotor shaft , which leads to high manufacturing cost
[0013] Therefore, to limit production costs, one solution is to use less precise assembly and dimensional tolerances
[0014] Nevertheless, when the rotor rotates, such an assembly can lead to vibrations especially due to loosely mounted bearings
Method used
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Embodiment Construction
[0054] refer to figure 1 with2 , will first be described a home automation device according to the invention installed in a building comprising an opening 1 , a window or a door and equipped with a curtain 2 belonging to a screening device 3 , in particular a motorized roller blind.
[0055] The screening device 3 can be a roller blind, a canvas blind or a blind with orientable slats, or a roller shutter. Of course, the invention is applicable to all types of screening arrangements.
[0056] A roller blind according to an embodiment of the present invention will refer to figure 1 with 2 to describe.
[0057] The curtain 2 of the screening device 3 is wound on a winding tube 4 driven by a motorized drive 5 and is movable between a wound position, especially an upper position, and an unfolded position, especially a lower position.
[0058] The motorized drive means 5 comprise an electromechanical actuator 11 , in particular of the tube type, so as to be able to set the rotat...
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An electromechanical actuator for a home automation system comprises an electric motor (12) comprising a rotor (13) and a stator (14), wherein the rotor (13) comprises a rotor shaft (24) having one end (24a) borne by a bearing (26), wherein the stator (14) comprises a stator body (18) comprising an annular housing (32) inside which the bearing (26). The bearing (26) is mounted with a loose fit within the annular housing (32) of the stator body (18), the free adjustment being defined by: a first set of axial operation and a second radial operating clearance . An annular elastic seal (35) is disposed around the bearing (26), the annular elastic seal (35) being compressed between the annular surface of the annular housing (32) and an outer annular bearing surface (26). A first abutment of the annular housing (32) of the stator body (18) is formed by plastic deformation of the stator body (18).
Description
technical field [0001] The invention relates to an electromechanical actuator comprising an electric motor, an automated device for closing or sun protection comprising such an actuator, and a method for manufacturing such an actuator. [0002] In general, the invention relates to the field of screening arrangements comprising motorized drive means for moving a curtain between at least one first position and one second position. Background technique [0003] Motorized drive means comprising electromechanical actuators for movable elements intended to close, shade or provide protection from the sun, such as shutters, doors, gates, shades or any other equivalent material (hereinafter referred to as curtains) . [0004] Document EP 1420502 is known which describes a brushless direct current (DC) motor with electronic switching comprising a rotor and a stator coaxially positioned around an axis of rotation. [0005] The rotor includes a rotor shaft. The first end of the rotor...
Claims
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IPC IPC(8): H02K5/15H02K7/14H02K5/04H02K1/12H02K15/00
CPCH02K5/1672H02K5/24
Inventor M·罗歇F·吉莱D·马格里P·布里翁F·吉罗拉
Owner SOMFY ACTIVITES SA