Engagement structure

Patent metadata

Field	Value
Publication number	US-11067109-B2
Application number	US-201815868864-A
Country	US
Kind code	B2
Filing date	Jan 11, 2018
Priority date	Jan 18, 2017
Publication date	Jul 20, 2021
Grant date	Jul 20, 2021

Abstract

An engagement structure engages a first part with a second part, and includes a receive portion provided on the first part and an insertion portion provided on the second part. The insertion portion includes an insertion main body protruded in its insertion direction to the receive portion, and protrusions protruded from a side face of the insertion main body and having elasticity to be deformable. The receive portion includes an opening provided with an opening main portion into which the insertion main body is inserted and cutouts into which the protrusions are inserted when the insertion main body is inserted into the opening main portion, and overhangs that are disposed adjacently to the opening main portion to prevent, on a back surface of the receive portion, the protrusions from being pulled out due to elastic restorations of the protrusions that have passed through the cutouts.

First claim

What is claimed is:

1. An engagement structure for engaging a first part with a second part comprising:
a receive portion provided on the first part; and
an insertion portion provided on the second part to be inserted into the receive portion and then fixed with the receive portion, wherein
the insertion portion includes:
an insertion main body protruded in an insertion direction toward the receive portion, and
a plurality of protrusions protruded from a side face of the insertion main body to extend along a protrusion direction of the insertion main body and having elasticity to be deformable,
wherein each of the plurality of protrusions includes:
an inclined portion positioned at a free end side of the insertion main body and inclined with respect to the insertion direction of the insertion main body,
wherein each inclined portion defines:
a first inclined face that forms an angle with respect to the side face of the insertion main body, the first inclined face is formed on a radial outer surface of each inclined portion,
a portion of the first inclined face located at an insertion direction most edge of the inclined portion, the portion of the first inclined face connecting the first inclined portion to the side face of the insertion main body and the portion of the first inclined face being inclined with respect to the insertion direction of the insertion main body, and
a second inclined face that is oriented orthogonal to the first inclined face, the second inclined face being inclined with respect to the insertion direction of the insertion main body; and

the receive portion includes:
an opening provided with an opening main portion into which the insertion main body is inserted and a plurality of cutouts into which the protrusions are inserted when the insertion main body is inserted into the opening main portion, and
a plurality of overhangs that are disposed adjacently to the opening main portion so as to contact with the protrusions being inserted into the cutouts in a direction perpendicular to the insertion direction of the protrusions and prevent, on a back surface of the receive portion, the protrusions from being pulled out due to elastic restorations of the protrusions that have passed through the cutouts.

2. The engagement structure according to claim 1 , wherein
each of the protrusions includes:
a protrusion main body positioned on a base end side of the insertion main body and extending along the insertion direction of the insertion main body.

3. The engagement structure according to claim 1 , further comprising:
a plurality of anti-pullout portions extended from opposite ends of the protrusion main bodies to the inclined portions, respectively, along a circumferential direction of the insertion direction.

4. The engagement structure according to claim 1 , wherein
the receive portion further includes a tapered portion formed on an inner edge of the opening and inclined so as to protrude inward and toward the insertion direction of the insertion portion.

5. The engagement structure according to claim 1 , further comprising:
anti-rotation portions provided on a back surface of the receive portion of the first part to contact, in a direction perpendicular to the insertion direction of the insertion portion, with the protrusions of the insertion portion that have inserted in the opening at opposite positions to the cutouts, respectively.

Assignees

• Nihon Plast Co Ltd

Inventors

• Horimizu Yasumasa
• Ihara Atsushi

Classifications

• F16B5/0664 Primary

  at least one of the sheets or plates having integrally formed or integrally connected snap-in-features · CPC title

• B62D27/04

  resilient · CPC title

• F16B5/0607

  joining sheets or plates to each other (F16B5/0692, F16B21/082 take precedence) · 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

• B62D25/08

  Front or rear portions {(sub-frames for mounting engine or suspensions B62D21/11)} · CPC title