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Electric motor and closing or sun protection installation comprising such a motor

An electric motor and motor technology, applied in the field of electromechanical actuators, low-power electronic switch synchronous electric motors, and motors, can solve the problems of complex manufacturing and assembly methods, and achieve the effects of minimizing vibration, preventing interference, and optimizing power.

Active Publication Date: 2013-12-11
SOMFY ACTIVITES SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the coil is wound around the shaft of the rotor, and its manufacturing and assembly methods are complicated

Method used

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  • Electric motor and closing or sun protection installation comprising such a motor
  • Electric motor and closing or sun protection installation comprising such a motor
  • Electric motor and closing or sun protection installation comprising such a motor

Examples

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Embodiment Construction

[0057] The motor 1 according to the invention and shown in the figures is a synchronous brushless motor. It comprises an electronic control unit 10 , a rotor 20 and a stator 30 . The motor has an elongated structure. The length L1 of the motor, measured parallel to the axis of rotation XX of the rotor 20 , is at least equal to twice the maximum diameter D1 of the motor, measured radially with respect to this axis. In particular, a motor with a diameter D1 equal to about 22 mm and a length L1 of from 45 to 50 mm will be particularly well suited for driving internal blinds. The electronic control unit 10 comprises a printed circuit 11 in one end of the motor and a set of sensors 12, such as Hall effect sensors, arranged inside the structure of the motor 1 and mounted with lugs 13 on the printed circuit board. on circuit 11. All sensors are similar.

[0058] Each component of the motor 20 and 30 is shown and described independently hereinafter.

[0059] figure 2 An embodim...

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PUM

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Abstract

The invention relates to an electric motor comprising a rotor and a coiled stator, the rotor comprising a shaft (21) and two disks (22a) that are rotatably fixed to the shaft and provided with permanent magnets (24), a so-called outer portion (312a, 312b, 312'a, 312'b) of the stator extending from each disk axially parallel to a rotational axis of the rotor and radially beyond same, from the axis. Said stator comprises a plurality of disjointed bars (31, 31') consisting of a magnetically conductive material, certain parts (312a, 312b, 312'a, 312'b) of which form the outer portion of the stator (30). The stator also comprises a carrier structure (32) holding the bars such that they are fixed in relation to each other, said carrier structure being mounted in such a way that it can rotate on the shaft (21), axially outside the two disks (22a).; The outer portion of the stator extends parallel to the rotational axis, axially outside the disks (22a) of the rotor, up to the carrier structure.

Description

technical field [0001] The invention relates to the field of electromechanical actuators that allow motorized control of elements for shading or sun protection in buildings, such as curtains. In particular, the invention relates to a motor whose radial dimensions are reduced for integration in a tubular actuator. [0002] In particular, the invention relates to the field of low power electronically switched synchronous electric motors. Such a motor must have a considerable torque with small radial dimensions to allow the motor to be integrated in a blind roller tube or in a box with a substantially rectangular cross-section, for example in the track of a venetian blind. [0003] These particular dimensions facilitate the production of long motors whose length compensates for their small cross-section in order to obtain the power required to drive the elements for shading or sun protection. Background technique [0004] The motors currently used for these applications are b...

Claims

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Application Information

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IPC IPC(8): H02K21/12H02K29/08H02K1/14H02K1/18H02K16/02H02K11/00
CPCH02K1/14H02K1/185H02K16/02H02K21/12H02K29/08H02K2201/12H02K11/33H02K5/10H02K7/14
Inventor P-E·卡瓦雷克诺伯特·迪皮莱特弗里德里克·马拉瓦尔
Owner SOMFY ACTIVITES SA