Kabushiki Kaisha Toyota Chuo Kenkyusho

Toyota Jidosha Kabushiki Kaisha

Aisin Takaoka Co., Ltd.

Haruo Katagiri

Kenji Fujikake

Katsuhito Yamada

Takashi Shimazu

Hidetoshi Shimizu

Shigeru Sakamoto

Masashi Ishihara

Akio Inatomi

Toru Shinoda

Masayoshi Katagiri

A brake disc rotor includes: a pair of disc-shaped sliding plates provided in parallel with and separately from each other in the axle direction; a plurality of partition walls radially provided between the sliding plates; a plurality of passages radially formed between the plurality of partition walls; a plurality of inlet and outlet openings communicating with the plurality of passages and opening inward and in the radially outward direction; and an inclined portion formed on the surface of the inside sliding plate opposed to the outside sliding plate such that a distance between the inside and outside sliding plates is gradually decreased in the radially outward direction.

Brake disc rotor

A brake disc rotor which includes sliding plates on the inside and outside which are in parallel with and separated from each other in the axial direction of an axle; a plurality of inner and outer partition walls radially arranged between the sliding plates; a plurality of passages radially formed between the inner and outer partition walls; a plurality of inlet and outlet openings for communicating the passages; and a plurality of connecting openings for communicating the mutually adjacent passages. The stream flowing from the inlet opening is formed along an upper wall of the inner partition walls and the stream is formed in a flow separation portion in the vicinity of a lower wall of the outer partition wall through the connecting openings.

A brake disc rotor comprising: sliding plates on the inside and outside in parallel with and separated from each other in the axial direction of an axle; fins composed of a plurality of curved long partition walls provided between the sliding plates, radially extending from the internal portion to the external portion, and inclined with respect to the radial direction, and a plurality of curved short partition walls provided in parallel between the mutually adjacent long partition walls and extending from a large-diameter internal portion to the external portion; a plurality of ventilation holes radially divided by the fins and composed of the upper and lower ventilation holes with the short partition walls; and inlet and outlet openings opened inward and outward in the radial direction thereof.

An axial flow fan having auxiliary blades which includes a hub rotatably supported and driven by a drive source, a plurality of fan blades extending radially outwardly from the hub and at least one auxiliary blade projecting from an outer part on a suction and/or pressure surface of the fan blade and extending in the chord-length direction in such a manner that the leading region of the auxiliary blade is located nearer to the central axis of the fan than the trailing region thereof. A supplementary angle .theta..sub.0 of an angle formed between a chord line connecting to a leading edge and a trailing edge of the outer auxiliary blade and a reference line decided by the shape or operation of the fan blade has the relation; 5.degree..ltoreq..theta..sub.0 .ltoreq.40.degree.. A supplementary angle .theta..sub.N of an angle formed between a chord line connecting to a leading edge and a trailing edge of the inner auxiliary blade and a reference line decided by the shape or operation of the fan blade also has the relation; 18.degree..ltoreq..theta..sub.n .ltoreq.50.degree.. The axial flow fan serves to produce a strong radial flow by auxiliary blades of the optimum positional relation as described and improves the aerodynamic performances of the fan such as the air flow rate, efficiency and noise level.

Axial flow fan with auxiliary blades

An axial flow fan having an auxiliary blade wherein a hub member is rotatably supported and driven by a drive source, a plurality of blades are provided having a predetermined angle with respect to the rotational direction thereof and a predetermined width and height, the blades being radially provided on the hub member, and at least one auxiliary blade is disposed on at least one of a suction and pressure surface of the blades and extends beyond an end portion of a trailing edge thereof and substantially within a predetermined length in the width direction of the blade of the surface thereof, a leading edge of the auxiliary blade being positioned closer to an axis of the fan than a trailing edge of the auxiliary blade. The axial flow fan having such an auxiliary blade increases the radial flow by the extending portion of the auxiliary blade.

Axial flow fan having auxiliary blade

An axial flow fan having auxiliary blades comprises a hub member rotatably supported and driven by a drive source, a plurality of main blades having a predetermined angle with respect to the rotational direction thereof and a predetermined width and height, the main blades being radially provided on the hub member, at least one auxiliary blade formed on at least one of a suction surface and a pressure surface of each main fan blade and having a predetermined length in the width direction of the main fan blade, a leading edge of the auxiliary blade being positioned closer to the axis of the main fan blade than a trailing edge of the auxiliary blade, a shroud comprising a thin hollow member having a large opening and a small throttled opening at opposite ends thereof, and the main fan blade being inserted within the shroud from the small throttled opening toward the large opening of the shroud. An axial inserted width L of the main fan blade, which is defined by a point of minimum opening of the small throttled opening and an inserted end portion of the inserted main fan blade in the axial direction, and an axial entire width W of the main fan blade are maintained in the following relation:

Axial flow fan having auxiliary blades

An axial flow fan includes a plurality of auxiliary blades disposed upon and projecting from the suction and/or pressure surfaces of primary fan blades radially disposed on a hub member. The auxiliary blades extend substantially in the width direction or transversely of the primary blades, and the leading edges of the auxiliary blades, as viewed in the rotational axis direction of the fan, are disposed closer to the rotational center of the hub member than the trailing edges of the auxiliary blades. In this manner, the axial flow fan produces an axial fluid flow by means of the primary blades and a radial fluid flow by means of the auxiliary blades.

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Nagoya, Japan

Haruo Katagiri