Convex portion, method of manufacturing convex portion, positioning structure

Patent metadata

Field	Value
Publication number	US-11110507-B2
Application number	US-201916520818-A
Country	US
Kind code	B2
Filing date	Jul 24, 2019
Priority date	Jul 31, 2018
Publication date	Sep 7, 2021
Grant date	Sep 7, 2021

Abstract

A convex portion projecting from a plate member includes a base, a convex body, and a guide. The base is part of the plate member. The convex body erects in a cylindrical shape from the base. The guide is at a top end of the convex body. The base includes a first inner circumferential surface, a second inner circumferential surface, and a third inner circumferential surface. The first inner circumferential surface is continuous with an inner circumferential surface of the convex body and extends in a direction opposite to an erecting direction of the convex body. The second inner circumferential surface is continuous with the first inner circumferential surface and intersects the erecting direction of the convex body. The third inner circumferential surface is continuous with the second inner circumferential surface and is larger in diameter than the first inner circumferential surface.

First claim

The invention claimed is:

1. A convex portion projecting from a plate member, the convex portion comprising:
a base being part of the plate member,
a convex body erecting in a cylindrical shape from the base; and
a guide at a top end of the convex body,
the base including:
a first inner circumferential surface that is continuous with an inner circumferential surface of the convex body and extends in a direction opposite to an erecting direction of the convex body;
a second inner circumferential surface that is continuous with the first inner circumferential surface and intersects the erecting direction of the convex body; and
a third inner circumferential surface that is continuous with the second inner circumferential surface and is larger in diameter than the first inner circumferential surface, and the convex body is above the third inner circumferential surface,
a diameter of an outer circumferential surface of the convex body is equal to a diameter of the third inner circumferential surface.

2. The convex portion according to claim 1 ,
wherein a dimension of the convex body in the erection direction is larger than a plate thickness of the base.

3. The convex portion according to claim 1 ,
wherein the convex body includes a convex base part continuous with the base and a convex top part continuous with the convex base part and the guide,
wherein an outer circumferential surface of the convex base part includes a sheared surface,
wherein an outer circumferential surface of the convex top part and the guide includes a material surface of the plate member.

4. The convex portion according to claim 1 ,
wherein the guide has a tapered surface that is tapered in a direction away from the convex body.

5. A positioning structure comprising:
a first plate portion being the plate member including the convex portion according to claim 1 ; and
a second plate portion including a hole or a concave portion in which the convex portion fits.

6. A method of manufacturing the convex portion of claim 1 , the convex body including a convex base part continuous with the base and a convex top part continuous with the convex base part and the guide,
the method comprising:
burring the plate member to form the convex top part and the guide; and shearing the plate member to form the convex base part.

7. The convex portion according to claim 1 ,
wherein the guide has an end surface such that an interior of the convex body is exposed, the guide being angled inward relative to the convex body.

8. The convex portion according to claim 7 ,
wherein a dimension of the convex body in the erection direction is larger than a plate thickness of the base.

9. The convex portion according to claim 7 ,
wherein the convex body includes a convex base part continuous with the base and a convex top part continuous with the convex base part and the guide,
wherein an outer circumferential surface of the convex base part includes a sheared surface,
wherein an outer circumferential surface of the convex top part and the guide includes a material surface of the plate member.

10. The convex portion according to claim 7 ,
wherein the guide has a tapered surface that is tapered in a direction away from the convex body.

11. A positioning structure comprising:
a first plate portion being the plate member including the convex portion according to claim 7 ; and
a second plate portion including a hole or a concave portion in which the convex portion fits.

Assignees

• Iwakami Keisuke
• Ricoh Co Ltd

Inventors

• Iwakami Keisuke

Classifications

• B21D28/26 Primary

  in sheets or flat parts · CPC title

• B21D22/04

  for dimpling (combined with perforating B21D28/24) · CPC title

• B32B3/00

  Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form · CPC title

• F16B5/045

  without the use of separate rivets · CPC title

• B21D19/088

  for flanging holes · CPC title