# US 2019/0170179 A1 · Encased nut

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- Number: US 2019/0170179 A1
- Document ID: US20190170179A1
- Status: Published application
- Kind: A1
- Application number: 15/527,519
- Filed: 2016-03-11
- Published: 2019-06-06
- Earliest claimed: 2015-05-19
- Assignees: Aoyama Seisakusho Co., Ltd.; Toyota Jidosha Kabushiki Kaisha
- Applicants: Aoyama Seisakusho Co., Ltd.; Toyota Jidosha Kabushiki Kaisha
- Inventors: Mototsugu HARA; Yoshihiro MURASE; Yukinori FUJIMOTO; Hiroyasu ICHIKAWA; Katsuhisa KATOH; Ryuji UTSUNO; Takahiro SEKO
- Web page: https://patentgrep.com/patent/US20190170179A1

## CPC

- F16B 33/008: {Corrosion preventing means}
- F16B 5/0225: {allowing for adjustment parallel to the plane of the plates}
- F16B 37/04: Devices for fastening nuts to surfaces, e.g. sheets, plates {(nuts fastened behind a wall by a toggle-mechanism F16B13/0808; threaded inserts F16B37/122; measures against loss of bolts, nuts or pins F16B41/002)}
- F16B 37/044: {Nut cages}
- F16B: DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING (couplings for transmitting rotation F16D)

## Abstract

The nut of the present invention is an encased nut including: a case body 2 which is welded to a body 1; and a nut 3 which is freely movably held inside the case body 2. The nut 3 is composed of a hexagonal nut body 4 and an insulating member 5 made of a resin and insert-molded on the outer surface of this hexagonal nut body 4. The insulating member 5 is provided with a plurality of protrusions 9 on the side, abutting on the body 1, of the outer circumferential part. The nut 3 is insulated, and thus is not affixed by electrodeposition coating.

## Claims

### Claim 1

An encased nut comprising:
a case body which is welded to a body; and
a nut which is freely movably held inside the case body,
wherein:
the nut is composed of a nut body and an insulating member which is made of a resin and insert-molded on the outer surface of the nut body; and
the insulating member is provided with a plurality of protrusions on the side, abutting on the body, of the outer circumferential part.

### Claim 2 (depends on 1)

The encased nut according to claim 1, wherein the case body has a bolt hole for inserting a bolt.

### Claim 3 (depends on 1)

The encased nut according to claim 1, wherein:
the insulating member is provided with a resin head part and a resin flange part having the protrusions; and
the resin head part is freely movably inserted into a guide hole formed in the body.

### Claim 4 (depends on 3)

The encased nut according to claim 3, wherein the resin head part has side surfaces which are each in a shape such that the center part is recessed in an axial core direction.