BALANCER SHAFT STRUCTURE

• Main Authors: KATO NARUMI, OKADA NOZOMI, ITO JUNNOSUKE, TANAKA KAZUMA
• Format: Patent
• Language: English; Japanese
• Published: 10.10.2019
• Subjects: BLASTING; ENGINEERING ELEMENTS AND UNITS; GEARING; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MEANS FOR DAMPING VIBRATION; MECHANICAL ENGINEERING; SHOCK-ABSORBERS; SPRINGS; THERMAL INSULATION IN GENERAL; WEAPONS

To provide a balancer shaft structure capable of easily regulating an axial position of a backlash eliminating mechanism.SOLUTION: The balancer shaft structure comprises: a balancer shaft 10 having a balance weight 11; a driven gear 20 for rotating the balancer shaft 10 through engagement with a drive gear 2; and a backlash eliminating mechanism 30 having a backlash eliminating gear 40 for use in eliminating a backlash between the drive gear 2 and the driven gear 20 and an axial energization member 50 for energizing the backlash eliminating gear 40 toward the driven gear 20 with respect to the axial direction, and having its axial position regulated. The balancer shaft structure includes: a first regulation part 31 arranged on the balancer shaft 10 inside from a shaft end part 12 of the balancer shaft 10 with respect to the axial direction to regulate an axial inner position of the backlash eliminating mechanism 30; and a second regulation part 32 for regulating an axial outer position of the backlash eliminating mechanism 30 while being fixed to the shaft end part 12 rather than the first regulation part 31 of the balancer shaft 10.SELECTED DRAWING: Figure 1 【課題】セラシ機構の軸方向位置の規制を容易に行うことができるバランサ軸構造を提供する。【解決手段】バランスウエイト１１を有するバランサ軸１０と、ドライブギア２と噛み合うことでバランサ軸１０を回転させるドリブンギア２０と、ドライブギアとドリブンギア２０との間のバックラッシュをなくすための、セラシギア４０と、軸線方向に関しセラシギア４０をドリブンギア２０へ向けて付勢する軸方向付勢部材５０とを有し、軸方向位置が規制されるセラシ機構３０とを備え、軸線方向に関しバランサ軸１０の軸端部１２より内側においてバランサ軸１０上に設けられ、セラシ機構３０の軸方向内側位置を規制する第１規制部３１と、バランサ軸１０の第１規制部３１よりも軸端部１２側に固定されることでセラシ機構３０の軸方向外側位置を規制する第２規制部３２とを有する。【選択図】図１