Kabushiki Kaisha Toyota Jidoshokki

Kabushiki Kaisha Toyota Chuo Kenkyusho

Tokyu Co., Ltd.

Masakatsu Kuroishi

Kazunori Yoshida

Masakazu Obayashi

Yasuhiro Kondoh

Fumitaka Yoshizumi

Takahiro Moroi

Masakazu Hashimoto

Naofumi Kimura

Hajime Kurita

Takayuki Inoue

Katsuji Abe

Masataka Osawa

Yuji Nagasawa

Yoshio Kimoto

Yasushi Suzuki

Kazuyoshi Ogawa

Shuzo Sanda

Noriyasu Yamada

Masahiro Hamanaka

Kunihiko Ando

Hitoshi Nagata

Toshinari Sano

Takanori Abekura

Tomohiro Suzuki

A compressor valve structure permits improvement in durability and volumetric efficiency of a compressor and limits power losses. The width of the base portion of each suction reed valve is shorter than the width of the valve flap. The valve base plate has support portions, receiving portions, main coupling portions, and auxiliary coupling portions. Each support portion receives a central area of corresponding one of the valve flaps. The receiving portion receives a distal area of the valve flap. The main coupling portion extends from the support portion and couples the support portion to the receiving portion. The auxiliary coupling portion extends from the support portion. The suction ports are formed through the valve base plate, while leaving the support portions, the receiving portions, the main coupling portions, and the auxiliary coupling portions.

Compressor having suction reed valve and valve plate arrangement

A compressor includes a valve base plate, which is arranged between a suction chamber and a compression chamber and has a suction port. The valve base plate includes a sealing surface, a recessed groove, a receiving surface, and a support surface. The sealing surface is flush with a fixing surface and contacts the valve portion in an annular manner. The recessed groove is located at an outer side of the sealing surface and recessed with respect to the fixing surface. The recessed groove includes a bottom portion and separates an edge portion of the valve portion from the bottom portion. The receiving surface is flush with the fixing surface and capable of contacting a distal zone of the valve portion. The support surface is flush with the fixing surface and capable of contacting a middle zone located at an inner side of the sealing surface of the valve portion.

Compressor

A compressor includes a discharge chamber, compressor chamber, valve plate, and discharge reed valve. The valve plate includes a fixing surface, exposed to the discharge chamber, and a discharge port, which communicates the discharge chamber and the compression chamber. The discharge reed valve includes a fixed portion, fixed to the fixing surface, a base portion, separable from the valve plate, and a valve portion, which closes the discharge port. The valve plate includes an annular seal surface, recessed groove, receiving surface, and support surface. The seal surface contacts the valve portion around the discharge port. The recessed groove is arranged in the fixing surface outward from the seal surface. The receiving surface is flush with the fixing surface and contacts a distal region of the valve portion. The support surface is flush with the fixing surface and contacts a central region of the valve portion.

A compressor includes a discharge chamber, a compression chamber, a partition wall, and a discharge reed valve. The partition wall is arranged between the discharge chamber and the compression chamber and includes a fixing surface facing the discharge chamber. The partition wall includes a discharge port that communicates the discharge chamber and the compression chamber. The discharge reed valve includes a fixed portion, an intermediate portion, and a valve portion. The fixing surface includes a first groove portion, which extends around the discharge port, and a valve seat surface, which is arranged between the discharge port and the first groove portion. The first groove portion extends to a range overlapped with the intermediate portion. A part of the valve portion at a distal side does not close the first groove portion. The valve seat surface includes a receiving portion.

A friction transmission unit for transmitting power between input and output members by means of friction and capable of loss reduction and large torque transmission. Power is transmitted between a planar disk () and a roller (), which contacts the upper surface of the planar disk (). The profile of the peripheral surface () of the roller () which actually contacts the upper surface () of the disk () is expressed as z=a&#xb7;sin h(bx). This profile realizes a contact stress distribution which is constant over an area corresponding to approximately 80% in the width direction of the entire contact region. This profile also prevents formation of peak stresses near and at the edges of the contact region and, instead, enables formation of monotonic decrease of stress in areas near the edges.

Friction transmission unit

A frictional dynamic characteristic measuring apparatus for measuring a pressing force and a frictional force acting between a friction material as a specimen and a slide portion which are in sliding contact, includes a sliding speed changing device for forcibly changing a sliding speed of the friction material and the slide portion, which is changing in a self-excited manner at a resonance frequency of a resonance system including the friction material and the slide portion, at the resonance frequency of the resonance system. This apparatus enables evaluation of a friction material which absorbs self-excited vibration in a torsional vibration system without the need of additional evaluation in an actual machine for use.

Frictional dynamic characteristic measuring apparatus

Growing community of inventors

Seto, Japan

Masakatsu Kuroishi