Semi-circular alignment features of an elastic averaging alignment system

Patent metadata

Field	Value
Publication number	US-9618026-B2
Application number	US-201213567580-A
Country	US
Kind code	B2
Filing date	Aug 6, 2012
Priority date	Aug 6, 2012
Publication date	Apr 11, 2017
Grant date	Apr 11, 2017

Abstract

A semi-circular male alignment feature elastic averaging alignment system utilizing a plurality of semi-circular male alignment features which interface by elastic averaging with a plurality of female alignment features, wherein semi-circular male alignment features of a first component are received during a mating process by respective female alignment features formed in a second component, whereby precise alignment of the first and second components and stiffness are provided by elastic averaging of the male and female alignment features.

First claim

The invention claimed is:

1. A semi-circular male alignment feature elastic averaging alignment system, comprising:
a first component having a first base;
a second component having a second base, said second base having a base thickness;
a plurality of semi-circular male alignment features disposed at said first base in upstanding relation thereto; and
a plurality of female alignment features formed in said second base, wherein each semi-circular male alignment feature is received by a respective female alignment feature when said first component is mated to said second component;
wherein when each said semi-circular male alignment feature is received into the respective female alignment feature of the second base during mating of said first component with respect to said second component, elastic deformation occurs at an interface between each semi-circular male alignment feature and the respective female alignment feature of the second base, wherein said elastic deformation is responsive to each said semi-circular male alignment feature being interferingly received by the respective female alignment feature;
wherein said elastic deformation is elastically averaged over said plurality of semi-circular male alignment features such that said first component is precisely located relative to said second component; and
wherein each said semi-circular male alignment feature comprises a semi-circular stud having a semi-circular cross-section comprising:
a first face having a convex shape forming a facial apex;
a second face having a facial groove flanked by a left sidewall and by a right sidewall; and
a stud height which is greater than said base thickness;
wherein said semi-circular stud tapers from said first base and terminates distally therefrom in a generally rounded crest.

2. The semi-circular male alignment feature elastic averaging alignment system of claim 1 , wherein each said semi-circular stud has a stud width adjacent said first base between said first and second faces; wherein the respective female alignment feature has an aperture width; and wherein said elastic deformation is responsive to said stud width exceeding said aperture width.

3. The semi-circular male alignment feature elastic averaging alignment system of claim 2 , wherein said elastic deformation occurs in said second base adjoining said first face.

4. The semi-circular male alignment feature elastic averaging alignment system of claim 3 , wherein each said left and right sidewall is planar truncated.

5. The semi-circular male alignment feature elastic averaging alignment system of claim 4 , wherein said elastic averaging further occurs by twisting of any said semi-circular stud in which said left and right sidewalls are misaligned with respect to the respective female alignment feature prior to the mating of said first and second components.

6. The semi-circular male alignment feature elastic averaging alignment system of claim 5 , wherein said elastic deformation provides a stiffened assembly of said first and second components when said first and second components are mutually mated to each other.

7. A semi-circular male alignment feature elastic averaging alignment system, comprising:
a first component having a first base;
a second component having a second base, said second base having a base thickness;
a plurality of semi-circular male alignment features disposed at said first base in upstanding relation thereto; and
a plurality of female alignment features formed in said second base, wherein each semi-circular male alignment feature is received by a respective female alignment feature when said first component is mated to said second component;
wherein when each said semi-circular male alignment feature is received into the respective female alignment feature during mating of said first component with respect to said second component, elastic deformation occurs at an interface between each semi-circular male alignment feature and the respective said female alignment feature, wherein said elastic deformation is responsive to each said semi-circular male alignment feature being interferingly received by the respective female alignment feature;
wherein each said semi-circular male alignment feature comprises a semi-circular stud having a semi-circular cross-section comprising:
a first face having a convex shape forming a facial apex;
a second face having a facial groove flanked by a left sidewall and by a right sidewall; and
a stud height which is greater than said base thickness;
wherein said semi-circular stud tapers from said first base and terminates distally therefrom in a generally rounded crest;

wherein each said semi-circular stud has a stud width adjacent said first base between said first and second faces; wherein the respective female alignment feature has an aperture width; and wherein said elastic deformation is responsive to said stud width exceeding said aperture width;
wherein said elastic deformation further comprises twisting of any said semi-circular stud in which said left and right sidewalls are misaligned with respect to the respective female alignment feature prior to the mating of said first and second components; and
wherein said elastic deformation is elastically averaged over said plurality of semi-circular male alignment features such that said first component is precisely located relative to said second component.

Assignees

• Morris Steven E
• Bowles Thomas F
• Gm Global Tech Operations Llc

Inventors

• Morris Steven E
• Bowles Thomas F

Classifications

• Y10T403/20

  with indicator or inspection means · CPC title

• B23P19/10 Primary

  Aligning parts to be fitted together · CPC title

• F16B17/00 Primary

  Connecting constructional elements or machine parts by a part of or on one member entering a hole in the other {and involving plastic deformation}(riveting F16B19/04) · CPC title

• Y10T29/49778

  with aligning, guiding, or instruction · CPC title