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US 12,460,703 B2Granted
Worm reducer capable of guilding lubricant to maintain function
AssigneeHonda Motor Co., Ltd.
InventorsSho Ohtake, Takashi Miyoshi
Life of this patent
Estimating the term…
Abstract
A worm reducer 1, in which at least one of an upper surface part or a lower surface part of a housing includes a protruding part 20 protruding toward a worm wheel 60; and with respect to an imaginary line L1 extending parallel to the rotation axis C2 of a worm gear 50 and passing through the central axis of a shaft 71 in the housing, a protruding part 20 is provided between an imaginary line L1 and a meshing part E between the worm gear 50 and the worm wheel 60 in a plan view, and includes an inclined part 21 that inclines toward the meshing part E.
Claims10
A worm reducer, comprising:
- a housing filled with grease that lubricates the worm reducer;
- a worm gear supported by a bearing in the housing;
- a worm wheel that meshes with the worm gear;
- and
- a shaft that has a central axis coincident with a rotational axis of the worm wheel;
- wherein the housing includes an upper surface part and a lower surface part that faces parallel to the upper surface part by interposing the worm wheel;
- wherein at least one of the upper surface part or the lower surface part includes a protruding part protruding toward the worm wheel;
- wherein, an entirety of the protruding part being provided between the central axis of the shaft and a meshing region between the worm gear and the worm wheel in a plan view, the protruding part including an inclined portion inclining toward the meshing region;
- wherein the protruding part includes a guide portion that guides lubricant toward the worm gear;
- wherein the protruding part includes a bottom portion protruding from the guide portion toward a side of the shaft;
- wherein the guide portion is positioned between the bottom portion and the upper or lower surface part, and includes a first guide portion on a side of the bottom portion and a second guide portion on a side of the upper or lower surface part;
- wherein, in the guide portion,
- a curvature of the first guide portion is larger than a curvature of the second guide portion on a shaft side of the guide portion nearer to the shaft, and
- the curvature of the second guide portion is larger than the curvature of the first guide portion on a worm gear side of the guide portion nearer to the worm gear.
11 more elements
A worm reducer, comprising:
- a housing filled with grease that lubricates the worm reducer;
- a worm gear supported by a bearing in the housing;
- a worm wheel that meshes with the worm gear;
- and
- a shaft that has a central axis coincident with a rotational axis of the worm wheel;
- wherein the housing includes an upper surface part and a lower surface part that faces parallel to the upper surface part by interposing the worm wheel;
- wherein at least one of the upper surface part or the lower surface part includes a protruding part protruding toward the worm wheel;
- wherein, an entirety of the protruding part is provided closer to a side of the worm gear than the central axis of the shaft in a plan view, and at least a portion of the protruding part is arranged on a straight line passing through the central axis of the shaft and being perpendicular to the rotational axis of the worm wheel;
- wherein the protruding part includes a guide portion that guides lubricant toward the worm gear;
- wherein the protruding part includes a bottom portion protruding from the guide portion toward a side of the shaft, and
- wherein the guide portion is positioned between the bottom portion and the upper or lower surface part, and includes a first guide portion on a side of the bottom portion and a second guide portion on a side of the upper or lower surface part;
- wherein, in the guide portion,
- curvature of the first guide portion is larger than curvature of the second guide portion on a shaft side of the guide portion nearer to the shaft, and
- the curvature of the second guide portion is larger than the curvature of the first guide portion on a worm gear side of the guide portion nearer to the worm gear.
11 more elements
A worm reducer, comprising:
- a housing filled with grease that lubricates the worm reducer;
- a worm gear supported by a bearing in the housing;
- a worm wheel that meshes with the worm gear;
- and
- a shaft that has a central axis coincident with a rotational axis of the worm wheel;
- wherein the housing includes an upper surface part and a lower surface part that faces parallel to the upper surface part by interposing the worm wheel;
- wherein at least one of the upper surface part or the lower surface part includes a protruding part protruding toward the worm wheel;
- wherein, an entirety of the protruding part being provided between the central axis of the shaft and a meshing region between the worm gear and the worm wheel in a plan view, the protruding part including an inclined portion inclining toward the meshing region;
- wherein the protruding part includes a guide portion that guides lubricant toward the worm gear;
- wherein the protruding part includes a bottom portion protruding from the guide portion toward a side of the shaft;
- wherein the guide portion is positioned between the bottom portion and the upper or lower surface part, and includes a first guide portion on a side of the bottom portion and a second guide portion on a side of the upper or lower surface part,
- wherein
- the protruding part includes:
- an edge portion where the bottom portion and the guide portion intersect;
- a first end portion that is an end on a shaft side of the edge portion nearer to the shaft;
- and
- a second end portion that is an end on a worm gear side of the edge portion nearer to the worm gear,
- wherein the protruding part is curved toward a side of the central axis of the shaft from an imaginary line connecting the first end portion and the second end portion.
15 more elements
Dependencies are inferred from the claim text.