IP Library › Granted Patent US 12679466
Granted Patent B2
US 12679466 · App. 18/503,272 · Granted Jul 14, 2026

Side sill assembly of vehicle

Inventors: Hyeong-Seok Lee (Gwangju, KR); Huen-Sick Min (Hwaseong-si, KR)
Assignees: Hyundai Motor Company; Kia Corporation
B62D25/025
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Quick Facts
Patent No.
US 12679466
App. No.
18/503,272
Granted
Jul 14, 2026
Kind
B2
Abstract

An embodiment side sill assembly of a vehicle includes a side sill inner, a side sill inner reinforcement connected to a front end of the side sill inner and a front pillar inner lower of the vehicle, a side sill inner pipe disposed in a length direction of the vehicle and connected to the front end of the side sill inner, and a side sill inner extension connecting the side sill inner reinforcement and the side sill inner pipe to the side sill inner.

Claims (48)

1 . A side sill assembly of a vehicle, the side sill assembly comprising:

a side sill inner;

a side sill inner reinforcement connected to a front end of the side sill inner and a front pillar inner lower of the vehicle;

a side sill inner pipe disposed in a length direction of the vehicle and connected to the front end of the side sill inner; and

a side sill inner extension connecting the side sill inner reinforcement and the side sill inner pipe to the side sill inner,

wherein the side sill inner pipe comprises a plurality of side sill inner pipes disposed at intervals in a height direction of the vehicle,

wherein the side sill inner reinforcement surrounds in different directions side sill inner pipes vertically adjacent to each other, and

wherein the side sill inner reinforcement is arranged horizontally between the side sill inner pipes vertically adjacent to each other.

2 . The side sill assembly of claim 1 , wherein the side sill inner reinforcement surrounds an outer side of the side sill inner pipe.

3 . The side sill assembly of claim 1 , wherein slits are disposed in the side sill inner pipe at intervals in the length direction of the vehicle.

4 . The side sill assembly of claim 3 , wherein the slits are disposed on upper and lower surfaces of the side sill inner pipe.

5 . The side sill assembly of claim 1 , wherein the side sill inner extension is coupled to an outer surface of the side sill inner pipe in a width direction of the vehicle.

6 . The side sill assembly of claim 1 , wherein a cross section of the side sill inner reinforcement is formed to alternately face an inner side and an outer side in a width direction of the vehicle.

7 . The side sill assembly of claim 1 , wherein an upper end and a lower end of the side sill inner reinforcement are connected across the front pillar inner and the side sill inner, respectively.

8 . The side sill assembly of claim 1 , wherein the side sill inner pipe is longer than the side sill inner reinforcement.

9 . The side sill assembly of claim 1 , wherein a predetermined length from a front end of the side sill inner extension is connected to the side sill inner reinforcement, and a length behind the predetermined length is connected to the side sill inner pipe.

10 . The side sill assembly of claim 9 , wherein upper and lower ends of the side sill inner extension are connected to the side sill inner at a portion of the side sill inner extension connected to the side sill inner pipe.

11 . A side sill assembly of a vehicle, the side sill assembly comprising:

a side sill inner;

a side sill inner reinforcement connected to a front end of the side sill inner and a front pillar inner lower of the vehicle;

a side sill inner pipe disposed in a length direction of the vehicle and connected to the front end of the side sill inner;

a side sill inner extension connecting the side sill inner reinforcement and the side sill inner pipe to the side sill inner;

a honeycomb reinforcement lower having a bottom surface fastened to the side sill inner; and

a honeycomb reinforcement upper connected to front and rear ends of the honeycomb reinforcement lower, wherein both ends of an assembly of the honeycomb reinforcement lower and the honeycomb reinforcement upper are open in a width direction of the vehicle,

wherein the side sill inner pipe comprises a plurality of side sill inner pipes disposed at intervals in a height direction of the vehicle,

wherein the side sill inner reinforcement surrounds in different directions side sill inner pipes vertically adjacent to each other, and

wherein the side sill inner reinforcement is horizontally formed between the side sill inner pipes vertically adjacent to each other.

12 . The side sill assembly of claim 11 , wherein the honeycomb reinforcement upper and the honeycomb reinforcement lower are continuously and repeatedly disposed in the length direction of the vehicle.

13 . The side sill assembly of claim 12 , wherein, among the honeycomb reinforcement uppers and the honeycomb reinforcement lowers, front ends of the honeycomb reinforcement upper and the honeycomb reinforcement lower located at a foremost side of the vehicle in the length direction of the vehicle are connected to the side sill inner extension.

14 . The side sill assembly of claim 11 , further comprising:

a battery mount coupled to the side sill inner and the honeycomb reinforcement lower; and

a battery mounting bolt fastened to the battery mount.

15 . The side sill assembly of claim 14 , wherein an upper end of the battery mount is fixed to the honeycomb reinforcement upper.

16 . The side sill assembly of claim 11 , wherein a concave portion is defined in an intermediate portion of the honeycomb reinforcement upper.

17 . A vehicle comprising:

a vehicle body comprising a front side member, a front pillar inner lower coupled to the front side member, and a floor panel;

a side sill inner, wherein a side end of the floor panel is fastened to the side sill inner;

a side sill inner pipe disposed in a length direction of the vehicle and connected to a front end of the side sill inner;

a side sill inner reinforcement connected to the front end of the side sill inner and the front pillar inner lower, wherein the side sill inner reinforcement surrounds an outer side of the side sill inner pipe; and

a side sill inner extension connecting the side sill inner reinforcement and the side sill inner pipe to the side sill inner,

wherein the side sill inner pipe comprises a plurality of side sill inner pipes disposed at intervals in a height direction of the vehicle,

wherein the side sill inner reinforcement surrounds in different directions side sill inner pipes vertically adjacent to each other, and

wherein the side sill inner reinforcement is horizontally located between the side sill inner pipes vertically adjacent to each other.

18 . The vehicle of claim 17 , further comprising:

a honeycomb reinforcement lower having a bottom surface fastened to the side sill inner; and

a honeycomb reinforcement upper connected to front and rear ends of the honeycomb reinforcement lower, wherein both ends of an assembly of the honeycomb reinforcement lower and the honeycomb reinforcement upper are open in a width direction of the vehicle.

19 . The vehicle of claim 17 , wherein the side sill inner extension is coupled to an outer surface of the side sill inner pipe in a width direction of the vehicle.

20 . The vehicle of claim 17 , wherein an upper end and a lower end of the side sill inner reinforcement are connected across the front pillar inner and the side sill inner, respectively.