# US 2014/0151991 A1 · Bolting structure of sub-frame

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- Number: US 2014/0151991 A1
- Document ID: US20140151991A1
- Status: Published application
- Kind: A1
- Application number: 13/801,740
- Filed: 2013-03-13
- Published: 2014-06-05
- Earliest claimed: 2012-12-03
- Assignees: Kia Motors Corporation
- Applicants: Kia Motors Corporation
- Inventors: Yong Dae KIM; Nam Young LEE; Seung Hyun KANG
- Web page: https://patentgrep.com/patent/US20140151991A1

## CPC

- B62D 21/11: with resilient means for suspension {, e.g. of wheels or engine; sub-frames for mounting engine or suspensions}
- B62D 25/082: {Engine compartments}
- B62D: MOTOR VEHICLES; TRAILERS (steering, or guiding on a desired track, of agricultural machines or implements A01B69/00; wheels, castors, axles, increasing wheel adhesion B60B; vehicle tyres, tyre inflation or tyre changing B60C; connections between vehicles of a train or the like B60D; vehicles for use on rail and road, amphibious or convertible vehicles B60F; suspension arrangements B60G; heating, cooling, ventilating or other air treating devices B60H; windows, windscreens, non-fixed roofs, doors or similar devices, protective coverings for vehicles not in use B60J; propulsion plant arrangements, auxiliary drives, transmissions, controls, instrumentation or dashboards B60K; electric equipment or propulsion of electrically-propelled vehicles B60L; power supply for electrically-propelled vehicles B60M; passenger accommodation not otherwise provided for B60N; adaptations for load transportation or to carry special loads or objects B60P; arrangement of signalling or lighting devices, the mounting or supporting thereof or circuits therefor, for vehicles in general B60Q; vehicles, vehicle fittings or vehicle parts not otherwise provided for B60R; servicing, cleaning, repairing, supporting, lifting, or manoeuvring, not otherwise provided for, B60S; brake arrangements, brake control systems or parts thereof B60T; air-cushion vehicles B60V; motor-cycles, accessories therefor B62J, B62K; testing of vehicles G01M)

## Abstract

A bolting structure of a sub-frame includes a reinforcer mounting the sub-frame through a side member. The reinforcer includes: a reinforcing member disposed to intersect with the side member in a cross shape and bolted, together with the side member, to a lower panel; an inner pipe disposed at the side member from surfaces interfacing between the reinforcing member and the side member; an outer pipe disposed at the reinforcing member from the surfaces interfacing between the reinforcing member and the side member and inserted into the sub-frame; and a bolt bolted to the inner pipe through the outer pipe and fixing the sub-frame.

## Claims

### Claim 1

A bolting structure of a sub-frame comprising:
a reinforcer mounting the sub-frame through a side member,
wherein the reinforcer includes:
a reinforcing member disposed to intersect with the side member in a cross shape and bolted, together with the side member, to a lower panel;
an inner pipe disposed at the side member extending from surfaces interfacing between the reinforcing member and the side member;
an outer pipe disposed at the reinforcing member extending from the surface interfacing between the reinforcing member and the side member and inserted into the sub-frame; and
a bolt bolted to the inner pipe through the outer pipe and fixing the sub-frame.

### Claim 2 (depends on 1)

The bolting structure of a sub-frame according to claim 1, wherein the reinforcer is provided with ribs for increasing rigidity.

### Claim 3 (depends on 2)

The bolting structure of a sub-frame according to claim 2, wherein the ribs extend from the center of the reinforcing member at which the side member is positioned toward both side end portions thereof.

### Claim 4 (depends on 1)

The bolting structure of a sub-frame according to claim 1, wherein an inner side of the side member is provided with a support bracket supporting the inner pipe.

### Claim 5 (depends on 4)

The bolting structure of a sub-frame according to claim 4, wherein the support bracket includes a lower bracket having both side end portions bent so as to be supported by an inner side surface of the side member and having the inner pipe supported by the center thereof while penetrating through the center thereof and an upper bracket extending in the inner side of the side member in a length direction of the side member and having the inner pipe supported thereby while penetrating therethrough.

### Claim 6 (depends on 4)

The bolting structure of a sub-frame according to claim 4, wherein the inner pipe is welded to the support bracket in a state in which the inner pipe penetrates through the support bracket.

### Claim 7 (depends on 1)

The bolting structure of a sub-frame according to claim 1, wherein the inner pipe is welded to an inner side surface of the side member.

### Claim 8 (depends on 1)

The bolting structure of a sub-frame according to claim 1, wherein front and rear and left and right ends of the reinforcing member are provided with flanges, which are welded to a bottom surface of a vehicle body.