Magnetic power transmission device
A power transmission device, magnetic technology, applied in the direction of power device, electric power device, transmission device, etc., can solve the problems of complex shape, low torque transmission efficiency, and inability to efficiently ensure the magnetic circuit area.
Inactive Publication Date: 2009-07-29
HONDA MOTOR CO LTD
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Problems solved by technology
[0005] According to the conventional magnetic power transmission device described above, the torque is transmitted between the pair of magnetic gears by using the magnetic force acting on the overlapping portion of the magnetic gear rings, so the ratio of the portion given to torque transmission to the total surface area of the magnetic gear rings is Since the area of the magnetic circuit cannot be ensured efficiently due to small size, there are problems such as low torque transmission efficiency and small transmission torque capacity.
In addition, the magnetic tooth has a complex shape that is time-consuming to manufacture, so the corresponding manufacturing cost increases
Method used
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Embodiment Construction
[0063] Hereinafter, a magnetic power transmission device according to a first embodiment of the present invention will be described with reference to the drawings. The first embodiment is an example in which the magnetic power transmission device of the present invention is applied to a differential device of a vehicle drive system, figure 1 A schematic configuration of a magnetic power transmission device 1 according to the present embodiment and a drive system of a vehicle 2 including the magnetic power transmission device 1 is shown. As shown in the figure, the vehicle 2 has an engine 3 , an automatic transmission 4 , a magnetic power transmission device 1 , left and right drive shafts 5 , 5 , and left and right drive wheels 6 , 6 .
[0064] In this vehicle 2, the torque of the engine 3 is shifted by the automatic transmission 4, and then transmitted to the left and right drive wheels 6, 6 through the magnetic power transmission device 1 and the left and right drive shafts ...
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Provided is a magnetic power transmission device capable of improving the power transmission efficiency and transmission capability while maintaining the merits obtained when performing power transmission by using a magnetic force and reducing the manufacturing cost. The magnetic power transmission device (1) includes: an external rotor (11) having a plurality of left and right permanent magnets (11c) arranged in the circumferential direction; an internal rotor (12) having a plurality of permanent magnets (12c) arranged in the circumferential direction; and an intermediate rotor (13) having a plurality of left and right soft magnetic bodies (13d, 13e) arranged in the circumferential direction. When the left and the right permanent magnets (11c) are positioned to oppose to the permanent magnets (12c): if the left permanent magnet (11c) has a polarity different from that of the left side of the permanent magnet (12c), the right permanent magnet (11c) has a polarity identical to that of the right side of the permanent magnet (12c); and if one of the soft magnetic bodies (13d, 13e) is positioned between the permanent magnets (11c, 12c), the other is positioned between the two adjacent permanent magnets (11c, 12c).
Description
technical field [0001] The present invention relates to a magnetic power transmission device that transmits power between a plurality of components using magnetic force. Background technique [0002] Conventionally, as such a magnetic power transmission device, for example, a device described in Patent Document 1 is known. This magnetic power transmission device includes a plurality of magnetic gears and a device main body. Each magnetic gear has: a disk-shaped magnetic disk made of a magnetic body; an annular magnetic gear ring that facilitates the adhesive to be mounted on the surface of the magnetic disk; and a rotating shaft that is pressed into the center of the magnetic disk. The rotating shaft is rotatably supported by the device main body. The structure of the magnetic gear ring is that a plurality of magnetic teeth made of permanent magnets are arranged in parallel in an annular shape on a plane, and these magnetic teeth are arranged so that the polarities of two a...
Claims
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IPC IPC(8): F16H49/00F16H48/12
CPCF16H48/12B60K7/0007B60K17/12B60K2001/001H02K49/108B60K17/16F16H49/00
Inventor 阿部典行圷重光
Owner HONDA MOTOR CO LTD