Worm shaft subassembly
US-2016318543-A1 · Nov 3, 2016 · US
Metal core for resin gear and resin gear composite member
US2016123451A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016123451-A1 |
| Application number | US-201414894046-A |
| Country | US |
| Kind code | A1 |
| Filing date | May 28, 2014 |
| Priority date | May 31, 2013 |
| Publication date | May 5, 2016 |
| Grant date | — |
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- Title
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- Abstract
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Abstract
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A metal core for a resin gear and a resin gear composite member are provided. The metal core includes a boss portion into which a shaft is press-fitted, a ring portion to which an outer peripheral resin is joined, and a connecting portion via which the boss portion and the ring portion are coaxially provided. The boss portion is arranged on one side of the connecting portion at an inner circumference of the connecting portion and extends annularly in an axial direction. The ring portion is arranged on the same side of the connecting portion at an outer circumference of the connecting portion and extends annularly in the axial direction. The boss portion, the connecting portion, and the ring portion are formed of an integrally continuous material. The boss portion is thicker than the connecting portion and the ring portion.
First claim
Opening claim text (preview).
1 . A metal core for a resin gear, the metal core comprising: a boss portion into which a shaft is press-fitted; a ring portion having an outer circumferential surface provided with a concave-convex structure and to which an outer peripheral resin is joined; and a connecting portion via which the boss portion and the ring portion are coaxially provided, wherein the boss portion is arranged on one side of the connecting portion at an inner circumference of the connecting portion and extends annularly in an axial direction, wherein the ring portion is arranged on the same side of the connecting portion at an outer circumference of the connecting portion and extends annularly in the axial direction, wherein the boss portion, the connecting portion, and the ring portion are formed of an integrally continuous material, and wherein the boss portion is thicker than the connecting portion and the ring portion. 2 . The metal core according to claim 1 , wherein the metal core is adapted to be used for a resin gear of a power steering apparatus, and the boss portion is adapted to receive a shaft to which a steering force is transmitted. 3 . The metal core according to claim 1 , wherein a thickness of the boss portion is in a range of 1.1 or more to 1.3 or less times a maximum thickness of the ring portion. 4 . The metal core according to claim 1 , wherein a portion between the boss portion and the connecting portion and a portion between the connecting portion and the ring portion are each formed with a continuous metal flow. 5 . A resin gear composite member comprising: an outer peripheral resin provided with gear teeth, wherein the metal core comprises: a boss portion into which a shaft is press-fitted; a ring portion having an outer circumferential surface provided with a concave-convex structure and to which the outer peripheral resin is joined; and a connecting portion via which the boss portion and the ring portion are coaxially provided, wherein the boss portion is arranged on one side of the connecting portion at an inner circumference of the connecting portion and extends annularly in an axial direction, wherein the ring portion is arranged on the same side of the connecting portion at an outer circumference of the connecting portion and extends annularly in the axial direction, wherein the boss portion, the connecting portion, and the ring portion are formed of an integrally continuous material, and wherein the boss portion is thicker than the connecting portion and the ring portion.
Assignees
Inventors
Classifications
- F16H55/22Primary
for transmissions with crossing shafts, especially worms, worm-gears · CPC title
Moulded gears, e.g. inserts therefor · CPC title
of worm type · CPC title
Use of materials; Use of treatments of toothed members or worms to affect their intrinsic material properties · CPC title
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- What does patent US2016123451A1 cover?
- A metal core for a resin gear and a resin gear composite member are provided. The metal core includes a boss portion into which a shaft is press-fitted, a ring portion to which an outer peripheral resin is joined, and a connecting portion via which the boss portion and the ring portion are coaxially provided. The boss portion is arranged on one side of the connecting portion at an inner circumf…
- Who is the assignee on this patent?
- Neturen Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification F16H55/22. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Thu May 05 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).