公开(公告)号：US20250137501A1

公开(公告)日：2025-05-01

申请号：US18917626

申请日：2024-10-16

Applicant: TSUBAKIMOTO CHAIN CO.

Inventor： Yoshihito Shimanaka

IPC: F16D41/12

Abstract: To provide a simple-structured selectable clutch that can be switched between operating modes, has high responsiveness, allows a desired torque capacity to be secured, causes less rattling and noise, and allows for switching with a small force even when transmitting a large torque. The clutch includes a first clutch mechanism configured to transmit rotation at any rotation angle via movable and/or rotatable locking members disposed between a first rotating element and a second rotating element, a second clutch mechanism configured to transmit rotation at a predetermined angle by engagement between a first engaging element and a second engaging element, and an operating mechanism for switching the actions of at least the first clutch mechanism and/or second clutch mechanism. The clutch is configured to allow switching between transmission and interruption of torque between relatively rotatable first and second shafts.

公开(公告)号：US12253119B2

公开(公告)日：2025-03-18

申请号：US18388717

申请日：2023-11-10

Applicant: TSUBAKIMOTO CHAIN CO.

Inventor： Akira Morita ,  Tadashi Murakami ,  Hirokazu Tsuneda

IPC: F16D41/07 ,  F16D41/06

Abstract: A cam clutch unit which can receive an axial load in a small space without increasing rigidity of a cage ring or disposing another member is provided.
The cam clutch unit includes a plurality of cams 130 and a plurality of rollers 140 disposed so as to be aligned in a circumferential direction between an inner ring and an outer ring, a cage ring 150 having a plurality of pocket portions 151, 152 which regulate relative movement in a circumferential direction of the cam 130 and the roller 140, and an annular spring 160 which urges the cam 130, in which the roller 140 has a part protruding in an axial direction more than the cage ring 150 when being held by the cage ring 150.

公开(公告)号：US12196276B2

公开(公告)日：2025-01-14

申请号：US18629186

申请日：2024-04-08

Applicant: TSUBAKIMOTO CHAIN CO.

Inventor： Yuji Kurematsu

IPC: F16D41/067

Abstract: A selectable clutch with a selector is provided, in which support grooves are formed to one of an inner race and an outer race, while pocket parts are formed to the other. A resilient member is provided to bias rollers disposed between the inner race and outer race toward the pocket parts. A roller-holding surface of the support groove and a roller-holding surface of the pocket part are formed with an inclination angle such that, when the rollers are held therebetween, a force acts on the rollers in a direction to move the rollers toward the pocket parts. In the lock mode, the rollers are each held by the support groove, pocket part, and selector.

公开(公告)号：US20240309940A1

公开(公告)日：2024-09-19

申请号：US18431096

申请日：2024-02-02

Applicant: TSUBAKIMOTO CHAIN CO.

Inventor： Ryosuke Nanri ,  Kosuke Yabuki

IPC: F16G13/04

CPC classification number: F16G13/04

Abstract: To provide a high-strength silent chain and a chain drive system. The silent chain is made up of a plurality of link plates pivotably coupled together with connecting pins. The plurality of link plates include two or more types of link plates having different shapes. The link plates of different shapes are designed to have pitch lines at the same height when the link plates sit on a sprocket. The chain drive system includes this silent chain.

公开(公告)号：US20240288069A1

公开(公告)日：2024-08-29

申请号：US18420878

申请日：2024-01-24

Applicant: TSUBAKIMOTO CHAIN CO.

Inventor： Masahiko Yamauchi

IPC: F16H63/34 ,  F16H59/18 ,  F16H59/44 ,  F16H59/50 ,  F16H59/66 ,  F16H61/20

CPC classification number: F16H63/3416 ,  F16H59/44 ,  F16H59/50 ,  F16H59/66 ,  F16H61/20 ,  F16H59/18 ,  F16H2059/443 ,  F16H2059/446 ,  F16H2059/663 ,  F16H2061/205 ,  F16H2312/04 ,  F16H2312/12

Abstract: An object of the present invention is to provide a vehicle parking lock system that realizes a parking lock with a positive user perception, and enables energy and cost reductions without complex control and with a simple configuration. The object is achieved by a selectable clutch configured to be switchable between four operating modes and provided to one of an input shaft, an output shaft, and an intermediate shaft of a transmission. The operating mode of the selectable clutch is controlled based on detection signals of a plurality of sensors to prevent an unintended movement of the vehicle when the vehicle is stationary.

公开(公告)号：US20240209903A1

公开(公告)日：2024-06-27

申请号：US18599989

申请日：2024-03-08

Applicant: TSUBAKIMOTO CHAIN CO.

Inventor： Eiichi Nakagawa

IPC: F16D41/08 ,  F16D41/07

CPC classification number: F16D41/084 ,  F16D41/07

Abstract: An object of the present invention is to provide a cam and a one-way cam clutch that realize a reduction in weight and production cost, provide more design freedom in setting the center of gravity of the cam, and achieve high responsiveness. The above object is achieved by a cam configured to make contact with an inner race and an outer race by a rotational moment applied in an engaged direction by an annular spring, in which a plurality of cam plates having an identical outer contour and arranged in parallel along a direction of the pivot axis are coupled together and united by a connecting pin extending in the direction of the pivot axis, and the annular spring is configured to be mountable between adjacent cam plates and/or on an outer side of the plurality of cam plates in the direction of the pivot axis.

公开(公告)号：US20240200618A1

公开(公告)日：2024-06-20

申请号：US18500548

申请日：2023-11-02

Applicant: TSUBAKIMOTO CHAIN CO.

Inventor： Akira Morita ,  Riku Kato ,  Hirokazu Tsuneda

IPC: F16D41/063 ,  F16D41/067

CPC classification number: F16D41/063 ,  F16D41/067

Abstract: A cam clutch unit includes a plurality of cams and a plurality of rollers disposed so as to be aligned in a circumferential direction between an inner ring and an outer ring, a cage ring having a plurality of pocket portions which regulate relative movement in a circumferential direction of the cam and the roller, and an annular spring which urges the cam, in which the cam has an engagement stepped portion capable of engagement with the spring, the cage ring has an end-part circumferential annular portion continuing in the circumferential direction on an end surface in the axial direction, the pocket portion regulates movement of the roller to the outer ring side and the inner ring side and has a claw portion capable of insertion of the roller from the outer ring side or the inner ring side by elastic deformation.

公开(公告)号：US20240191782A1

公开(公告)日：2024-06-13

申请号：US18378340

申请日：2023-10-10

Applicant: TSUBAKIMOTO CHAIN CO.

Inventor： Yuichiro Ishikawa

IPC: F16H7/08

CPC classification number: F16H7/08 ,  F16H2007/0806 ,  F16H2007/0812 ,  F16H2007/0891

Abstract: Provided is a tensioner which has a small total number of components and no risk of incorrect assembly, allows easy load change, is easy to assemble, and excellently stabilizes an oil pressure in a pressure oil chamber. The tensioner 100 includes a relief mechanism that relieves oil to the outside of a plunger 110 when the oil pressure in the pressure oil chamber formed between the plunger 110 and a plunger containing hole 121 in a housing 120 increases, relief holes 141 extending through the plunger 120 from the inside of a plunger inner space 111 to an outer circumferential side thereof, and a hole closing member 142 that is pressed into an opening of each of the relief holes 141 on the outer circumferential side.

公开(公告)号：US12000457B2

公开(公告)日：2024-06-04

申请号：US18127117

申请日：2023-03-28

Applicant: TSUBAKIMOTO CHAIN CO.

Inventor： Yusuke Saito

IPC: F16G13/06

CPC classification number: F16G13/06

Abstract: An object of the present invention is to provide a chain that is easy to assemble, has a longer life and smaller size, and allows larger tolerance for misalignment. The object is achieved by a chain including a plurality of outer links each having a pair of outer plates and pins, and a plurality of inner links each having a pair of inner plates and bushings, alternately and pivotably coupled together in the longitudinal direction of the chain by the pins rotatably inserted into the bushings, with a position restricting part positioned between each pair of the inner plates to restrict inward movement of each pair of inner plates in the chain width direction. The bushings are rotatably inserted in respective bushing holes of each pair of inner plates.

公开(公告)号：US20240167542A1

公开(公告)日：2024-05-23

申请号：US18383346

申请日：2023-10-24

Applicant: TSUBAKIMOTO CHAIN CO.

Inventor： Yuichiro Ishikawa

IPC: F16H7/08

CPC classification number: F16H7/08 ,  F16H2007/0812 ,  F16H2007/0859

Abstract: A chain tensioner that can ensure oil with such a volume that sufficiently fills a pressure oil chamber in a tensioner body and can quickly fill the pressure oil chamber with the oil with a simple constitution and without increasing a size of the tensioner body is provided.
In a chain tensioner including a tensioner body having a plunger holding hole, a plunger, and urging means that is telescopically accommodated in a pressure oil chamber and urges the plunger, the plunger holding hole has a plunger holding wall sliding with the plunger and a plunger holding bottom-surface part, an oil storing chamber is provided on an outer periphery side of the plunger holding wall, and on an end part on the plunger holding bottom-surface part side of the plunger holding hole, a check valve unit that connects the pressure oil chamber and the oil storing chamber are provided.