Expansion shear pin for use with thread-forming screw

Patent metadata

Field	Value
Publication number	US-10161365-B2
Application number	US-201514873487-A
Country	US
Kind code	B2
Filing date	Oct 2, 2015
Priority date	Oct 2, 2015
Publication date	Dec 25, 2018
Grant date	Dec 25, 2018

Abstract

A coupling system for attaching a first part to a second part using a locator and expansion shear pin is disclosed. The first part has a first flange and may be a formed part, such as an intake manifold. The second part has a second flange and may be a component, such as a throttle body, for attachment to the first part. The component includes a fastener-passing bore having an inner diameter. The locator and expansion shear pin extends perpendicularly from the first flange. The pin includes an expansion wall extending beyond the surface of the flange. A fastener-receiving bore is formed concentrically in the pin relative to the wall. The wall is expandable from a first diameter to a second diameter. The first diameter is less than the inner diameter of the fastener-passing bore. The second diameter is at least equal to the inner diameter of the fastener-passing bore.

First claim

What is claimed is:

1. A throttle body-to-manifold coupling system comprising:
a first flange on the manifold;
a second flange on the throttle body;
a fastener;
a bore formed in said second flange, said bore having an inner diameter,
a pin extending outwardly from said first flange and insertable into said bore, said pin being expandable from a first diameter to a second diameter, said first diameter being less than said inner diameter and said second diameter being at least equal to said inner diameter.

2. The coupling system of claim 1 , wherein said first flange has a face and wherein said pin extends perpendicularly with respect to said face.

3. The coupling system of claim 2 , wherein said pin is a locator and expansion shear pin having a fastener-receiving bore.

4. The coupling system of claim 3 , wherein said pin includes an expandable wall extending above said face.

5. The coupling system of claim 4 , wherein said wall is split.

6. The coupling system of claim 4 , wherein said expandable wall is concentric with said fastener-receiving bore.

7. The coupling system of claim 5 , wherein said expandable wall is integrally formed with said manifold.

8. The coupling system of claim 1 , wherein said fastener is a self-threading fastener.

9. A system for attaching a component to a molded part comprising:
a molded part flange;
a component flange;
a fastener;
a bore having an inner diameter formed in said component flange; and
a pin extending outwardly from said molded part flange and integrally formed therewith, said pin being insertable into said bore and having a wall expandable from a first diameter to a second diameter, said first diameter being less than said inner diameter and said second diameter being equal to said inner diameter.

10. The system of claim 9 , wherein said first flange has a face and wherein said pin extends perpendicularly with respect to said face.

11. The system of claim 10 , wherein said pin is a locator and expansion shear pin has a fastener-receiving bore.

12. The system of claim 11 , wherein said wall extends above said face.

13. The system of claim 12 , wherein said wall is split.

14. The system of claim 12 , wherein said expandable wall is concentric with said bore.

15. The system of claim 9 , wherein said fastener is a self-threading fastener.

16. A method for attaching a component having a component flange to a manifold having a manifold flange, the method comprising:
forming an assembly system comprising a fastener and a locator and expansion shear pin integrally formed with the manifold flange, said locator and expansion shear pin having an expandable wall extending from the manifold flange, and a bore formed in the component flange;
placing said wall within said bore; and
inserting said fastener, whereby said expandable wall is movable within said bore when initially attached but is expanded into said bore after insertion of said fastener to restrict movement therein.

17. The method for attaching of claim 16 , wherein said manifold flange includes an attachment face and wherein said locator and expansion shear pin has a long axis, said long axis being perpendicular to said face.

18. The method for attaching of claim 16 , wherein said locator and expansion shear pin has a fastener-receiving bore.

19. The method for attaching of claim 16 , wherein said wall is split.

20. The method for attaching of claim 16 , wherein said locator and expansion shear pin includes a fastener-receiving bore, said fastener-receiving bore being concentric with said wall.

Assignees

• Ford Global Tech Llc

Inventors

• Hall Brent A
• Newman Christopher William
• Brewer Katherine Jane

Classifications

• F16B31/00

  Screwed connections specially modified in view of tensile load; Break-bolts (shape of thread {F16B33/02; in couplings F16D9/00}) · CPC title

• F16B25/0021

  the material being metal, e.g. sheet-metal or aluminium (F16B25/0031 takes precedence) · CPC title

• F02M35/10354 Primary

  Joining multiple sections together (joining plastic materials together in general B29C65/00) · CPC title

• F16B35/002

  onto which threads are cut during screwing (F16B37/002 takes precedence) · CPC title

• F02M35/10367

  Machining, e.g. milling, grinding, punching, sanding; Bending; Surface treatments · CPC title