DIFFERENTIAL GEAR DEVICE

• Main Authors: KIM YOUNG RAE, DMITRI SNOPKOV
• Format: Patent
• Language: English; Japanese
• Published: 14.06.2018
• Subjects: BLASTING; ENGINEERING ELEMENTS AND UNITS; GEARING; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; THERMAL INSULATION IN GENERAL; WEAPONS

PROBLEM TO BE SOLVED: To reduce wear of a pinion gear at a gear support part, while achieving reduction in size and weight of a device.SOLUTION: A differential gear device includes: a pinion shaft 8 fixed to a differential case 7; pinion gears 9, 10 rotatably supported by the pinion shaft 8; and a first side gear 11 and a second side gear 12 which are engaged with the pinion gears 9, 10 from both sides and in which drive shafts 15, 17 are fitted respectively. In the differential gear device D, pinion gear teeth 9b, 10b of the pinion gears 9, 10 are formed outside toward the opposite side from the drive shafts 15, 17. Side gear teeth 11b, 12b of the first side gear 11 and the second side gear 12 are formed inside toward the drive shafts 15, 17. The pinion gear teeth 9b, 10b and the side gear teeth 11b, 12b are engaged with each other at the inside position of the first side gear 11 and the second side gear 12.SELECTED DRAWING: Figure 2 【課題】装置の小型・軽量化を達成しながら、ピニオンギヤのギヤ支持部での摩耗を低減すること。【解決手段】デフケース７に固定されるピニオンシャフト８と、ピニオンシャフト８に回転可能に支持されるピニオンギヤ９，１０と、ピニオンギヤ９，１０に両側から噛み合うと共にドライブシャフト１５，１７がそれぞれに嵌合される第１サイドギヤ１１及び第２サイドギヤ１２と、を備える。このディファレンシャルギヤ装置Ｄにおいて、ピニオンギヤ９，１０のピニオンギヤ歯９ｂ，１０ｂが、ドライブシャフト１５，１７とは反対側に向けて外側に形成される。第１サイドギヤ１１及び第２サイドギヤ１２のサイドギヤ歯１１ｂ，１２ｂが、ドライブシャフト１５，１７に向けて内側に形成される。ピニオンギヤ歯９ｂ，１０ｂとサイドギヤ歯１１ｂ，１２ｂとを、第１サイドギヤ１１及び第２サイドギヤ１２の内側位置で互いに噛み合わせる。【選択図】図２