公开(公告)号：US11339855B2

公开(公告)日：2022-05-24

申请号：US16655597

申请日：2019-10-17

Applicant: TSUBAKIMOTO CHAIN CO.

Inventor： Taichi Okada ,  Masanori Watanabe

IPC: F16H7/08

Abstract: An object of the present invention is to provide a tensioner that has a reduced number of components and weight, and is easy to assemble. The tensioner has a base member loosely fitted into an open rear end of a cylindrical plunger with a closed front end against the resiliency of a biasing means accommodated inside the plunger. The tensioner includes a plunger stopper mechanism configured such that an engaging part formed on the base member detachably engages an engaging groove provided on an inner circumferential surface of the plunger directly or via another member.

公开(公告)号：US11300181B2

公开(公告)日：2022-04-12

申请号：US16285826

申请日：2019-02-26

Applicant: TSUBAKIMOTO CHAIN CO.

Inventor： Kosuke Fujishima ,  Toshifumi Sato ,  Takeo Sasaki

IPC: F16G13/04 ,  F16H55/30

Abstract: Provided is a chain power transmission mechanism and a silent chain each having a simple configuration, easy to manufacture, and capable of reducing noise in the entire chain power transmission mechanism. Link plates of the silent chain include an inner-flank-engagement link plate which engages with a sprocket in an inner flank engagement mode and an outer-flank-engagement link plate which engages with the sprocket in an outer flank engagement mode. The inner-flank-engagement link plate and the outer-flank-engagement link plate are arranged such that combinations of the link plates at positions where engagement with and disengagement from a plurality of the sprockets are synchronized include a combination in which at least one of the link plates is different in engagement mode from another link plate.

公开(公告)号：US20220058481A1

公开(公告)日：2022-02-24

申请号：US17274868

申请日：2019-09-11

Applicant: TSUBAKIMOTO CHAIN CO.

Inventor： Takuya Odagaki

IPC: G06N3/08 ,  G06K9/62 ,  G06F17/18

Abstract: Provided is an abnormality determination apparatus. The abnormality determination apparatus, comprises: a storage unit; and a processor in communication with the storage unit. The processor configured to: accept a first signal output from a first sensor related to operation of a power transmission device and a second signal output from a second sensor attached to the power transmission device; determinate an operating condition based on the first signal; predict feature value of the second signal concerning the power transmission device in a normal state depending on the determined operation condition; and determine a presence or absence of an abnormality based on the predicted feature value of the second signal depending on the determined operating condition of the power transmission device and based on an actual feature value of the second signal

公开(公告)号：US11162563B2

公开(公告)日：2021-11-02

申请号：US16244448

申请日：2019-01-10

Applicant: TSUBAKIMOTO CHAIN CO.

Inventor： Masanori Watanabe ,  Tomohiro Fuse ,  Yoshihiro Furubayashi

IPC: F16H7/08

Abstract: To provide a tensioner capable of keeping oil pressure in an oil pressure chamber stable with a simple structure. The tensioner is equipped with a pressure adjusting mechanism that adjusts oil pressure in the oil pressure chamber and includes an adjustment space formed in a housing and communicating with the oil pressure chamber, a movable member disposed such as to be movable to and from the oil pressure chamber, and a pressure adjusting biasing unit that biases the movable member toward the oil pressure chamber. A liquid tight seal is maintained between the movable member and an inner wall of the adjustment space, between a position where the movable member has moved closest to the oil pressure chamber and a position where the movable member is farthest from the oil pressure chamber.

公开(公告)号：US20210333044A1

公开(公告)日：2021-10-28

申请号：US17369462

申请日：2021-07-07

Applicant: TSUBAKIMOTO CHAIN CO.

Inventor： Tomokatsu Takahashi

IPC: F25D25/04 ,  B66F3/08 ,  F25D23/02 ,  B65G1/06

Abstract: A low-temperature storage system 100 is provided, which can, with a simple structure, minimize heat transfer into the low-temperature storage chamber, reduce the operation noise, allow easy positioning of a reciprocating part inside the low-temperature storage chamber, and preclude device bulkiness outside the low-temperature storage chamber. The low-temperature storage system 100 includes a low-temperature storage chamber 110, and a transfer mechanism 120. The transfer mechanism 120 includes an in-storage unit 121 and an external unit 140. The in-storage unit 121 includes a reciprocating part 122 that holds the storage objects C, a turn guide 126 that guides the reciprocating part 122, and a lift member 131 that causes the reciprocating part 122. The external unit 140 includes a torque transmission part 141, a lift transmission part 147, and a detachable moving part 150 that drives the torque transmission part 141 and lift transmission part 147.

公开(公告)号：US20210285537A1

公开(公告)日：2021-09-16

申请号：US17136298

申请日：2020-12-29

Applicant: TSUBAKIMOTO CHAIN CO.

Inventor： Koichi Shimosaka

IPC: F16H57/05 ,  F16H7/18 ,  F16H57/04 ,  F01L1/02 ,  F01M11/02

Abstract: An object of the present invention is to provide a chain guide that can improve functional properties of a chain drive system. The chain guide of the present invention is attached to an engine block by a mounting bolt and slidably guides a running chain. The chain guide includes a mounting part provided with a shaft hole through which a mounting bolt is passed, and an oil jet passage for injecting lubricating oil, supplied to the shaft hole at a predetermined pressure, toward the chain.

公开(公告)号：US11009114B2

公开(公告)日：2021-05-18

申请号：US16175360

申请日：2018-10-30

Applicant: TSUBAKIMOTO CHAIN CO.

Inventor： Yuji Kurematsu ,  Tsuyoshi Kabai ,  Kazuyuki Ebinuma

IPC: F16H55/30

Abstract: Provided is a sprocket which suppresses generation of order sounds corresponding to cycles and prevents increase in tension fluctuations, noise, and vibrations caused by resonance while alleviating the influence of the tension fluctuations corresponding to load torque fluctuations and suppressing noise and vibrations. A plurality of teeth formed to engage with a chain are arranged to form a phase fluctuation pattern of a waveform having a phase which fluctuates between positive and negative sides, and the phase fluctuation pattern is set to have parts having different wavelengths.

公开(公告)号：US20210131531A1

公开(公告)日：2021-05-06

申请号：US17036285

申请日：2020-09-29

Applicant: TSUBAKIMOTO CHAIN CO.

Inventor： Kenji Muratsubaki

IPC: F16H7/08 ,  F16H7/06

Abstract: An object of the present invention is to provide a tensioner lever capable of consistently exerting appropriate reaction force to various tension fluctuations in conjunction with varying chain behavior, and reducing vibration and noise when the chain runs. The tensioner lever of the present invention includes a torsion coil spring having a pressing arm in which a distal end portion abuts on a lever body to form a first load point, and a support arm in which a distal end portion abuts on a support part provided to an attachment surface to form a first support point. The tensioner lever further includes a spring load adaption structure configured to form one or both of a second loading point and a second support point when a certain level or more of load is received from the chain.

公开(公告)号：US10982737B2

公开(公告)日：2021-04-20

申请号：US16433291

申请日：2019-06-06

Applicant: TSUBAKIMOTO CHAIN CO.

Inventor： Yuji Kurematsu

IPC: F16H7/08

Abstract: To provide a simple-structured tensioner that generates less knocking noise at the start-up of the engine and that prevents an excessive chain tension, severe friction, noise or vibration during the running of the engine, while also reducing production costs. The tensioner includes a ring control mechanism that controls the position of a resilient ring. The ring control mechanism includes a front-side restricting part having a front-side restricting surface and capable of restricting forward movement of the resilient ring, and a rear-side restriction member having a rear-side restricting surface and capable of restricting rearward movement of the resilient ring. The front-side restricting part is fixed to or formed integrally with the housing. The rear-side restriction member is disposed movable in a front to back direction relative to the housing and the plunger.

公开(公告)号：US10767739B2

公开(公告)日：2020-09-08

申请号：US16019911

申请日：2018-06-27

Applicant: TSUBAKIMOTO CHAIN CO.

Inventor： Toshihiko Miyazawa

IPC: F16H7/08

Abstract: To provide a tensioner that enables, with a simple structure, reduction of installation space of the tensioner and reduction of production costs. The tensioner includes a plunger, a housing, a spring, and a locking mechanism that stops the plunger from projecting out to the front side. The locking mechanism includes a first locking member and a second locking member. The first locking member includes a first spring holder arranged on a first side of a first end of the spring, and a restrained part. The second locking member includes a second spring holder arranged on a second side of a second end of the spring, and a movement restricting part that restricts movement of the restrained part toward the first side. The restrained part and movement restricting part are configured to releasably engage with each other.