US-12623572-B2 - Driver's seat mounting structure of vehicle

Abstract

An embodiment seat mounting structure for a vehicle includes a seat mounting support designed to protrude from an upper side of a floor panel, a seat leg bracket provided on a lower side of a seat and coupled to an upper side of the seat mounting support to fix the seat to the upper side of the seat mounting support, a seat cross member to be provided on a lower side of the floor panel to face the seat mounting support with the floor panel therebetween and arranged long in a transverse direction of a vehicle body, and a battery passing bolt configured to pass through a battery pack disposed under the floor panel and the seat cross member to be coupled to the seat cross member.

Inventors

• Seung Min Jeong
• Guk Mu PARK

Assignees

• HYUNDAI MOTOR COMPANY
• KIA CORPORATION

Dates

Publication Date

20260512

Application Date

20230727

Priority Date

20230410

Claims (20)

1. 1 . A seat mounting structure for a vehicle, the structure comprising: a seat mounting support designed to protrude from an upper side of a floor panel; a seat leg bracket provided on a lower side of a seat and coupled to an upper side of the seat mounting support to fix the seat to the upper side of the seat mounting support; a seat cross member to be provided on a lower side of the floor panel to face the seat mounting support with the floor panel therebetween and arranged long in a transverse direction of a vehicle body; a battery passing bolt configured to pass through a battery pack disposed under the floor panel and the seat cross member to be coupled to the seat cross member; a first seat mounting reinforcement on a front side of the seat mounting support and a second seat mounting reinforcement on a rear side of the seat mounting support, the first seat mounting reinforcement and the second seat mounting reinforcement being configured to reinforce rigidity of the seat mounting support; and a seat mounting gusset provided above a portion to which the battery passing bolt is coupled to define a space extending long in a vertical direction together with the seat mounting support and the second seat mounting reinforcement.
2. 2 . The structure of claim 1 , wherein the seat mounting support is formed long in a front-rear direction of the vehicle body.
3. 3 . The structure of claim 2 , wherein the seat cross member comprises: a front seat cross member installed on a lower side of the first seat mounting reinforcement provided on the front side of the seat mounting support; and a rear seat cross member installed on a lower side of the second seat mounting reinforcement provided on the rear side of the seat mounting support.
4. 4 . The structure of claim 3 , wherein the seat mounting support is provided long in a front-rear direction, is disposed to support a lower portion of either side of the seat, and defines a rectangular lattice structure together with the front seat cross member and the rear seat cross member with the floor panel therebetween.
5. 5 . The structure of claim 1 , wherein the space has a shape of a rectangular pillar by the seat mounting support, the second seat mounting reinforcement, and the seat mounting gusset.
6. 6 . The structure of claim 1 , further comprising seat mounting foot brackets installed on a lower side of each of the seat mounting support, the first and the second seat mounting reinforcements, and the seat mounting gusset defining the space, wherein the seat mounting foot brackets face the seat cross member with the floor panel therebetween.
7. 7 . The structure of claim 6 , wherein the seat mounting foot brackets are coupled to and are in surface contact with a lower end of an inside of the seat mounting support, a lower end of an inside of the first and the second seat mounting reinforcements, and a lower end of the seat mounting gusset.
8. 8 . The structure of claim 1 , further comprising a weld nut on the seat cross member, wherein the battery passing bolt is fastened to the weld nut.
9. 9 . The structure of claim 1 , further comprising: a battery mounting bracket on a lower side of the seat cross member; and a weld nut on the battery mounting bracket, wherein the battery passing bolt is fastened to the weld nut.
10. 10 . The structure of claim 9 , wherein: the seat cross member has a W-shaped cross-section; the battery mounting bracket has a shape of a panel surrounding the lower side of the seat cross member; the weld nut is coupled to an upper side of the battery mounting bracket within a central recess of the seat cross member; and the battery passing bolt is fastened to the weld nut after passing through the battery mounting bracket.
11. 11 . The structure of claim 1 , further comprising a seat mounting bracket on an upper side of the first seat mounting reinforcement on the front side of the seat mounting support and surrounding a corner where the seat mounting support and the first seat mounting reinforcement meet each other, wherein the seat leg bracket is coupled to the seat mounting bracket.
12. 12 . A vehicle comprising: a vehicle body comprising a floor panel; a battery pack disposed under the floor panel; a seat; a seat mounting support protruding from an upper side of the floor panel; a seat leg bracket provided on a lower side of the seat and coupled to an upper side of the seat mounting support to fix the seat to the upper side of the seat mounting support; a seat cross member provided on a lower side of the floor panel to face the seat mounting support with the floor panel therebetween and arranged long in a transverse direction of the vehicle body; a battery passing bolt passing through the battery pack and the seat cross member to be coupled to the seat cross member; a first seat mounting reinforcement on a front side of the seat mounting support and a second seat mounting reinforcement on a rear side of the seat mounting support; and a seat mounting gusset above a portion to which the battery passing bolt is coupled to define a space extending long in a vertical direction together with the seat mounting support and the second seat mounting reinforcement.
13. 13 . The vehicle of claim 12 , wherein the seat cross member comprises: a front seat cross member installed on a lower side of the first seat mounting reinforcement; and a rear seat cross member installed on a lower side of the second seat mounting reinforcement.
14. 14 . The vehicle of claim 13 , wherein the space has a shape of a rectangular pillar by the seat mounting support, the second seat mounting reinforcement, and the seat mounting gusset.
15. 15 . The vehicle of claim 12 , further comprising seat mounting foot brackets installed on a lower side of each of the seat mounting support, the first and the second seat mounting reinforcements, and the seat mounting gusset defining the space, wherein the seat mounting foot brackets face the seat cross member with the floor panel therebetween.
16. 16 . The vehicle of claim 12 , further comprising: a battery mounting bracket having a shape of a panel and surrounding a lower side of the seat cross member, wherein the seat cross member has a W-shaped cross-section; and a weld nut coupled to an upper side of the battery mounting bracket within a central recess of the seat cross member, wherein the battery passing bolt is fastened to the weld nut after passing through the battery mounting bracket.
17. 17 . The vehicle of claim 12 , further comprising seat mounting foot brackets installed on a lower side of each of the seat mounting support, the first and the second seat mounting reinforcements, and the seat mounting gusset, wherein the seat mounting foot brackets are coupled to and are in surface contact with a lower end of an inside of the seat mounting support, a lower end of an inside of the first and the second seat mounting reinforcements, and a lower end of the seat mounting gusset.
18. 18 . A seat mounting structure for a vehicle, the structure comprising: a seat mounting support designed to protrude from an upper side of a floor panel and formed long in a front-rear direction of a vehicle body; a seat leg bracket provided on a lower side of a seat and coupled to an upper side of the seat mounting support to fix the seat to the upper side of the seat mounting support; a front seat cross member and a rear seat cross member provided on a lower side of the floor panel to face the seat mounting support with the floor panel therebetween and arranged long in a transverse direction of the vehicle body; a first seat mounting reinforcement on a front side of the seat mounting support and a second seat mounting reinforcement on a rear side of the seat mounting support, wherein the seat mounting support defines a rectangular lattice structure together with the first seat mounting reinforcement and the second seat mounting reinforcement with the floor panel therebetween; a battery passing bolt configured to pass through a battery pack disposed under the floor panel and the rear seat cross member to be coupled to the rear seat cross member; and a seat mounting gusset provided above a portion to which the battery passing bolt is coupled to define a space extending long in a vertical direction together with the seat mounting support and the second seat mounting reinforcement.
19. 19 . The structure of claim 18 , further comprising seat mounting foot brackets installed on a lower side of each of the seat mounting support, the first and the second seat mounting reinforcements, and the seat mounting gusset, wherein the seat mounting foot brackets are coupled to and are in surface contact with a lower end of an inside of the seat mounting support, a lower end of an inside of the first and the second seat mounting reinforcements, and a lower end of the seat mounting gusset.
20. 20 . The structure of claim 18 , further comprising a battery mounting bracket having a shape of a panel surrounding a lower side of the rear seat cross member, wherein the rear seat cross member has a W-shaped cross-section; and a weld nut coupled to an upper side of the battery mounting bracket within a central recess of the rear seat cross member, wherein the battery passing bolt is fastened to the weld nut after passing through the battery mounting bracket.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This application claims the benefit of Korean Patent Application No. 10-2023-0046882, filed on Apr. 10, 2023, which application is hereby incorporated herein by reference. TECHNICAL FIELD The present disclosure relates to a technology for mounting a driver's seat of a vehicle on a vehicle body. BACKGROUND A purpose built vehicle (PBV) includes a life module that forms various types of boarding and loading spaces according to market needs and a drive module that is related to the substantial driving of the vehicle. Thus, life modules according to various needs may be coupled to a certain drive module, thus allowing various types of vehicles to be easily produced. Consequently, it is possible to very effectively respond to a market flow by small quantity batch production. In the case of an electric vehicle-based PBV for maximizing the size of an interior space, it is preferable that a driver's seat is arranged to be biased toward the front of the vehicle, thus increasing the utilization of a rear living space for a passenger and a loading box. When the driver's seat is arranged to be biased toward the front of the vehicle, it is preferable that a power train required for driving the vehicle is disposed under the driver's seat, and the driver's seat is disposed thereabove. In this case, since the driver's seat is located at a very high location above a floor of a vehicle body, it is very important to secure NVH performance and durability of a portion on the floor supporting the driver's seat. The description provided above as a related art of embodiments of the present disclosure is helping understand the background of embodiments of the present disclosure and should not be construed as being included in the related art known by those skilled in the art. SUMMARY An embodiment of the present disclosure provides a driver's seat mounting structure of a vehicle that arranges a driver's seat to be biased towards the front of the vehicle, thus maximizing interior space utilization of the vehicle, securing a comfortable foot accommodation space for a driver, guaranteeing a stable and firm support state for the driver's seat, ensuring the durability of the driver's seat, and reducing vibration and noise, thereby ultimately improving the marketability of the vehicle. According to an embodiment of the present disclosure, there is provided a driver's seat mounting structure of a vehicle, the structure including a seat mounting support installed to protrude from an upper side of a floor panel, a seat leg bracket provided on a lower side of a seat and coupled to an upper side of the seat mounting support to fix the seat to the upper side of the seat mounting support, a seat cross member provided on a lower side of the floor panel to face the seat mounting support with the floor panel therebetween and arranged long in a transverse direction of a vehicle body, and a battery passing bolt passing through a battery pack disposed under the floor panel and the seat cross member to be coupled to the seat cross member. The seat mounting support may be formed long in a front-rear direction of the vehicle body, a seat mounting reinforcement may be provided on each of front and rear sides of the seat mounting support to reinforce rigidity of the seat mounting support, and the seat cross member may include a front seat cross member installed on a lower side of the seat mounting reinforcement provided on the front side of the seat mounting support and a rear seat cross member installed on a lower side of the seat mounting reinforcement provided on the rear side of the seat mounting support. A seat mounting gusset may be provided above a portion to which the battery passing bolt is coupled, thus defining a space extending long in a vertical direction together with the seat mounting support and the seat mounting reinforcement. The space may be formed in a shape of a rectangular pillar by the seat mounting support, the seat mounting reinforcement, and the seat mounting gusset. A seat mounting foot bracket may be installed on the lower side of each of the seat mounting support, the seat mounting reinforcement, and the seat mounting gusset defining the space, and the seat mounting foot bracket may be provided to face the seat cross member with the floor panel therebetween. The seat mounting foot bracket may be coupled to and be in surface contact with a lower end of an inside of the seat mounting support, a lower end of an inside of the seat mounting reinforcement, and a lower end of the seat mounting gusset. The battery passing bolt may be fastened to a weld nut provided on the seat cross member. The battery passing bolt may be fastened to a weld nut provided on a battery mounting bracket that is further provided on the lower side of the seat cross member. The seat cross member may have a W-shaped cross-section, the battery mounting bracket may be formed in a shape of a panel surrounding the lower sid