# US 11,994,197 B2 · Transmission device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,994,197 B2 - Document ID: US11994197B2 - Status: Granted - Kind: B2 - Application number: 18/264,817 - Filed: 2022-02-25 - Published: 2024-03-28 - Granted: 2024-05-28 - Earliest claimed: 2021-03-19 - Assignees: JATCO Ltd; Nissan Motor Co., Ltd. - Applicants: JATCO Ltd; Nissan Motor Co., Ltd. - Inventors: Ryuzaburo Kobayashi; Kunihiko Fukanoki; Akira Kamiyama - Web page: https://patentgrep.com/patent/US11994197B2 ## CPC - F16H 48/40: characterised by features of the rotating cases - F16H 57/021: Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings - B60K 1/00: Arrangement or mounting of electrical propulsion units (B60K7/00 takes precedence; arrangement or mounting of plural diverse prime-movers for mutual or common propulsion B60K6/00) - F16H 48/08: comprising bevel gears - F16H 57/0424: {Lubricant guiding means in the wall of or integrated with the casing, e.g. grooves, channels, holes} - B60K 2001/001: {one motor mounted on a propulsion axle for rotating right and left wheels of this axle} - B60Y 2306/03: Lubrication - B60Y 2400/73: Planetary gearings - B60Y 2410/10: Housings - B60Y 2410/102: Shaft arrangements; Shaft supports, e.g. bearings - F16H 57/0025: {with gearing elements rigidly connected to a shaft, e.g. securing gears or pulleys by specially adapted splines, keys or methods} - F16H 57/037: Gearboxes for accommodating differential gearings (rotating cases for differential gearings F16H48/40) - F16H 57/043: {within rotary parts, e.g. axial channels or radial openings in shafts} - F16H 57/045: {Lubricant storage reservoirs, e.g. reservoirs in addition to a gear sump for collecting lubricant in the upper part of a gear case} - F16H 57/0457: {Splash lubrication} - F16H 57/0471: {Bearing} - F16H 57/0479: {Gears or bearings on planet carriers} - F16H 57/0483: {Axle or inter-axle differentials} - F16H 57/0486: {with fixed gear ratio (axle or inter-axle differentials F16H57/0483)} - F16H 57/082: {Planet carriers} - F16H 63/3425: {characterised by pawls or wheels} - F16H 2048/382: {Methods for manufacturing differential gearings} - F16H 2057/02008: {characterised by specific dividing lines or planes of the gear case} - F16H: GEARING - B60K: ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES - B60Y: INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY ## Abstract A power transmission device having: a case formed by assembling a first case member and a second case member; and a shaft member supported by the case, the power transmission device comprising: a protrusion provided to the first case member and protruding in the axial direction along to the direction of assembling the case; and a recess provided to the second case member and recessed in the axial direction. The shaft member is supported by the protrusion in the recess. ## Claims ### Claim 1 A power transmission device comprising a case assembled by assembling a first case member and a second case member, and a shaft member supported by the case, wherein the first case member has a protrusion protruding in an axial direction along an assembly direction of the case, the second case member has a recess recessed in the axial direction, the shaft member is supported by the protrusion in the recess, and an oil passage between the recess and the protrusion in a circumferential direction of the case. ### Claim 2 (depends on 1) The power transmission device according to claim 1, wherein the first case member has a first cutout portion at a leading end of the protrusion, and the shaft member is accommodated in the first cutout portion. ### Claim 3 (depends on 1) The power transmission device according to claim 1, wherein the second case member has a second cutout portion for accommodating the shaft member in the recess. ### Claim 4 (depends on 1) The power transmission device according to claim 1, wherein the oil passage has an elongated shape extending in the axial direction. ### Claim 5 (depends on 1) The power transmission device according to claim 1, comprising a plurality of the shaft members. ### Claim 6 (depends on 5) The power transmission device according to claim 5, comprising three or more of the shaft members. ### Claim 7 A power transmission device comprising a case assembled by assembling a first case member and a second case member, and a shaft member supported by the case, wherein the first case member has a protrusion protruding in an axial direction along an assembly direction of the case, the second case member has a recess recessed in the axial direction, the shaft member is supported by the protrusion in the recess, wherein the power transmission device comprises a pinion mate gear located between the first case member and the second case member, the pinion mate gear is supported on the shaft member, the power transmission device comprises a pinion mate shaft composed of the shaft member and a central member supporting the shaft member, the central member and the shaft member is integrally molded, and the shaft member is assembled to the second case member while supporting the pinion mate gear. ### Claim 8 A power transmission device comprising a case assembled by assembling a first case member and a second case member, and a shaft member supported by the case, wherein the first case member has a protrusion protruding in an axial direction along an assembly direction of the case, the second case member has a recess recessed in the axial direction, the shaft member is supported by the protrusion in the recess, and the first case member has a plate that is connected to the protrusion and fits into the second case member. ### Claim 9 (depends on 8) The power transmission device according to claim 8, wherein the first case member has a step portion provided on an outer circumferential surface at a boundary between the plate and the protrusion, and a diameter of the outer circumferential surface on the plate side in the step portion is smaller than a diameter of the outer circumferential surface on the protrusion side. ### Claim 10 (depends on 9) The power transmission device according to claim 9, wherein the second case member has a first portion on the side of the first case member and a second portion on the side away from the first case member, and a step portion is provided on an outer peripheral surface at a boundary between the first portion and the second portion.