Seat belt mounting structure for vehicle body

Abstract

The present application provides a seat belt mounting structure for a vehicle body, including: a roof side beam connected to an upper portion of a rear pillar located at a side surface of the vehicle body; a gusset plate assembly connected to a pillar connecting portion of the roof side beam to mount a retractor of a seat belt assembly; and a cross roof beam connected to the gusset plate assembly in a vehicle width direction. The seat belt mounting structure of the present application can enhance the mounting strength of the seat belt assembly and minimize the reinforcing material applied to enhance the mounting strength of the seat belt assembly.

Description

[0001] Cross-references to related applications

[0002] This application claims priority and benefit to Korean Patent Application No. 10-2025-0042552, filed with the Korean Intellectual Property Office on April 2, 2025, and Korean Patent Application No. 10-2025-0068130, filed with the Korean Intellectual Property Office on May 26, 2025, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The embodiments disclosed in this invention relate to a vehicle body, and more specifically to a seat belt mounting structure installed on a vehicle body. Background Technology

[0004] In recent years, the automotive industry has put forward a new concept for a vision of future mobility, aiming to realize dynamic, human-centered future cities. One of these future mobility solutions is dedicated mobility devices (e.g., dedicated private vehicles (PBVs)).

[0005] A PBV is an environmentally friendly mobility vehicle based on an electric vehicle (EV). These PBVs can provide users with a variety of customized services from their point of origin to their destination.

[0006] PBVs can be manufactured in various shapes and sizes to suit different user needs. For example, PBVs can be used as hailing vehicles or delivery vehicles.

[0007] To provide users with spacious and convenient entry and exit space, ride-hailing vehicles incorporate sliding doors into the side structure of the PBV body. PBVs are equipped with seatbelt assemblies mounted on the vehicle body as safety components to prevent occupant injury in the event of a collision or rollover.

[0008] In one example, the seat belt assembly can be installed on the upper part of the rear pillar (e.g., the D pillar) and the rear roof beam of the vehicle body, corresponding to the position of the rear seats.

[0009] If the rear overhead beam has a closed cross-section, the installation strength of the seat belt assembly can be improved; however, cost and weight may increase. If the rear overhead beam has an open cross-section, cost and weight can be reduced, but because the installation strength of the seat belt assembly is weaker, reinforcing materials are needed to enhance the installation strength of the seat belt assembly.

[0010] In another example, the seat belt assembly may be installed between the upper part of the rear pillar of the vehicle body and the upper part of the rear side pillar (e.g., the C-pillar located in front of the rear pillar).

[0011] However, even in this case, reinforcement material needs to be installed on the upper part of the rear pillar and the upper part of the rear side pillar to enhance the installation strength of the seat belt assembly.

[0012] In another example, ride-hailing vehicles can utilize ramps as wheelchair access devices for vulnerable road users. Wheelchair passengers can board via the ramp and enter the rear of the vehicle through a sliding door.

[0013] Because wheelchair occupants are seated high up, they may have difficulty fastening their seat belts if the seat belt assembly is installed on the lower side of the rear side pillar.

[0014] Therefore, it is necessary to adjust the installation position of the seat belt assembly so that wheelchair occupants can easily wear the seat belt.

[0015] The information contained in this background section is intended to enhance understanding of the background of this invention and may include matters that are not prior art and are known to those skilled in the art. Summary of the Invention

[0016] The present invention seeks to provide a seat belt mounting structure for a vehicle body that enhances the mounting strength of the seat belt assembly while minimizing the amount of reinforcing material used to enhance the mounting strength of the seat belt assembly.

[0017] Furthermore, the present invention aims to provide a seat belt mounting structure for a vehicle body, which enables wheelchair occupants to easily wear seat belts by mounting the seat belt assembly to the upper part of the rear side pillar.

[0018] The seat belt mounting structure for a vehicle body according to the disclosed embodiments may include: a roof side beam connected to the upper part of the rear side pillar located on the side of the vehicle body; a gusset assembly connected to the pillar connection portion of the roof side beam to mount the retractor of the seat belt assembly; and a transverse top beam connected to the gusset assembly along the width direction of the vehicle.

[0019] The seat belt mounting structure according to the disclosed embodiment further includes: a longitudinal top beam, which is arranged parallel to the upper part of the vehicle body in the front-rear direction and connected to the corner brace assembly and the transverse top beam.

[0020] The seat belt mounting structure according to the disclosed embodiment further includes: a coupling bracket connected to the corner brace assembly, the transverse top beam, and the longitudinal top beam.

[0021] The gusset assembly has grooves for mounting the retractor.

[0022] Closed sections can be formed between the joined gusset plate assemblies, transverse top beams, and joint supports.

[0023] The closed section can be connected to the groove along the width of the vehicle.

[0024] According to the disclosed embodiments, a seat belt mounting structure for a vehicle body may include: a roof side beam connected to the upper part of a rear side pillar located on the side of the vehicle body; a gusset assembly including: a main gusset unit connected to a pillar connection portion of the roof side beam for mounting a retractor of the seat belt assembly; an extension gusset unit connected to the main gusset unit along the vehicle width direction; a transverse top beam connected to the extension gusset unit along the vehicle width direction; and a longitudinal top beam arranged parallel to the upper part of the vehicle body along the front-rear direction and connected to the extension gusset unit and the transverse top beam.

[0025] The seat belt mounting structure for a vehicle body according to the disclosed embodiment further includes: a coupling bracket connected to the extension gusset plate unit, the transverse top beam, and the longitudinal top beam.

[0026] The main support plate unit may include: a lower corner support plate member, which is connected to the column connection and to the retractor, and an upper corner support plate member, which is connected to the column connection and to the upper part of the lower corner support plate member.

[0027] The extended gusset plate unit may include: a lower extension member connected to the lower gusset plate member along the vehicle width direction and connected to the longitudinal top beam and the transverse top beam; and an upper extension member connected to the upper gusset plate member and the lower extension member along the vehicle width direction.

[0028] The seat belt mounting structure according to the disclosed embodiment further includes: a groove formed between the lower corner support member and the upper corner support member, and between the lower extension member and the upper extension member.

[0029] The seat belt mounting structure according to the disclosed embodiment further includes: a coupling bracket connected to the lower extension member, the transverse top beam, and the longitudinal top beam.

[0030] The retractor can be positioned in the groove via a mounting hole formed in the lower corner brace member and connected to the edge of the mounting hole.

[0031] The connection between the lower corner brace member and the lower extension member can be formed as an overlapping part of the corner brace.

[0032] The connection portion of the lower extension member connected to the longitudinal top beam and the transverse top beam can be formed as a top beam overlap portion.

[0033] The retractor can be installed in the mounting hole formed in the lower corner gusset member and mounted along the edge of the mounting hole to the overlapping part of the lower corner gusset member and the corner gusset.

[0034] The connecting bracket can be connected to the lower extension member, the transverse top beam, and the longitudinal top beam. A closed section can be formed between the joined lower extension member, the transverse top beam, and the connecting bracket. The closed section can be connected to the recess along the vehicle width direction.

[0035] Each of the longitudinal top beams may include: a first top beam member connected to a front top beam disposed on both sides of the vehicle body in the vehicle width direction; and a second top beam member connected to a rear top beam disposed on both sides of the vehicle body in the vehicle width direction.

[0036] Each of the first and second top beam members may include: a beam forming element, formed on free ends facing each other, and connected to the lower extension member and the connection of the transverse top beam.

[0037] The roof side beams, gusset assemblies, transverse roof beams, longitudinal roof beams, and connecting brackets can all be connected to the roof panel.

[0038] The seat belt mounting structure of the vehicle body according to the disclosed embodiment can enhance the installation strength of the seat belt assembly mounted on the upper part of the rear side pillar. The seat belt mounting structure of the vehicle body according to the disclosed embodiment can minimize or eliminate the use of reinforcing materials to enhance the installation strength of the seat belt assembly.

[0039] According to the disclosed embodiment of the vehicle body seat belt mounting structure, in vehicles equipped with ramp devices for transporting vulnerable groups, the seat belt assembly can be mounted on the upper part of the rear side pillar. According to the disclosed embodiment of the vehicle body seat belt mounting structure, wheelchair passengers can easily wear the seat belt.

[0040] Furthermore, any effects that can be obtained or anticipated from the disclosed embodiments are disclosed, directly or implicitly, in the detailed description of the disclosed embodiments. That is, the various effects anticipated according to the disclosed embodiments will be disclosed in the following detailed description. Attached Figure Description

[0041] These accompanying drawings are intended for reference in describing the disclosed exemplary embodiments; therefore, the technical concepts of the disclosed embodiments should not be construed as being limited to the drawings, wherein:

[0042] Figure 1 This is a partial exploded perspective view of a vehicle body to which a seat belt mounting structure according to the disclosed embodiments can be applied.

[0043] Figure 2 This is a top view showing the seat belt mounting structure of a vehicle body according to the disclosed embodiment.

[0044] Figure 3 and Figure 4This is a perspective view showing the seat belt mounting structure of a vehicle body according to the disclosed embodiment.

[0045] Figure 5 and Figure 6 This is an exploded perspective view showing the seat belt mounting structure of a vehicle body according to the disclosed embodiment.

[0046] Figure 7 This is a perspective view showing the main support plate unit of the gusset plate assembly of a seat belt mounting structure applied to a vehicle body according to the disclosed embodiment.

[0047] Figure 8 It is along Figure 4 A cross-sectional view along line AA in the middle.

[0048] Figure 9 This is an exploded perspective view showing an extended gusset unit of a gusset assembly for a seat belt mounting structure applied to a vehicle body according to a disclosed embodiment.

[0049] Figure 10 It is along Figure 4 A cross-sectional view along the BB line.

[0050] Figure 11 This is an exploded perspective view showing the engagement bracket of a seat belt mounting structure applied to a vehicle body according to the disclosed embodiment.

[0051] Figure 12 It is along Figure 4 A cross-sectional view of the CC line.

[0052] Figure 13 It is along Figure 4 A cross-sectional view of the DD line.

[0053] Figure 14 This is a perspective view showing an example of the installation of a seat belt assembly applied to a vehicle body according to a disclosed embodiment of the seat belt mounting structure.

[0054] <Explanation of Figure Markers>

[0055] 1: Body

[0056] 3: Side structure

[0057] 4a: Anterior pillar

[0058] 4b: Central column

[0059] 4c: Rear pillar

[0060] 5: Rear side pillars

[0061] 6: Roof structure

[0062] 6a: Front Top Beam

[0063] 6b: Rear top beam

[0064] 7: Roof panel

[0065] 8: Seat belt assembly

[0066] 8a: Seat belts

[0067] 9: Retractor

[0068] 10: Roof side beam

[0069] 11: Column connection part

[0070] 20: Angle Bracket Assembly

[0071] 21: Main Character Support Unit

[0072] 23: Lower corner brace component

[0073] 25: Upper corner brace component

[0074] 27: Lower flange

[0075] 29: Lower molded part

[0076] 31: Mounting hole

[0077] 33: Upper flange

[0078] 35: Upper molded part

[0079] 41: Extended gusset plate unit

[0080] 43: Lower extension member

[0081] 45: Upper extension member

[0082] 47: First component

[0083] 49: Second component

[0084] 51: Groove

[0085] 53: Fastening components

[0086] 55: Overlapping section of the gusset plate

[0087] 57: Closed Section

[0088] 59: Connecting Section

[0089] 60: Horizontal top beam

[0090] 70: Longitudinal top beam

[0091] 71: First top beam component

[0092] 71a, 72a: Free ends

[0093] 71b, 72b: Beam forming parts

[0094] 72: Second top beam component

[0095] 73: Overlapping section of the top beam

[0096] 80: Connecting bracket

[0097] 81: First mating flange

[0098] 83: Second mating flange

[0099] 85: Joined molded parts

[0100] LP1, LP2: Load paths

[0101] 100: Seat belt installation structure.

[0102] The accompanying drawings referenced above are not necessarily drawn to scale, but should be understood as presenting a simplified representation of various features to illustrate the basic principles of the disclosed embodiments. For example, certain design features of the disclosed embodiments, including specific dimensions, orientations, positions, and shapes, will depend in part on the specific intended application and usage environment. Detailed Implementation

[0103] In the following, embodiments of the present invention will be described in detail with reference to the accompanying drawings, enabling those skilled in the art to practice the invention. Those skilled in the art will understand that the described embodiments can be modified in various ways without departing from the spirit or scope of the invention.

[0104] The terminology used herein is for describing particular embodiments only and is not intended to limit the invention. Unless the context clearly requires otherwise, the singular forms used herein are also intended to include the plural forms.

[0105] It should also be understood that the terms “comprising” and / or “including” as used herein mean that the stated feature, integer, step, operation, element, and / or component is present, but do not exclude the presence or addition of one or more other features, integers, steps, operations, components, and / or combinations thereof. The term “and / or” as used herein includes any and all combinations of one or more of the related listed items.

[0106] In this specification, the term "connection" refers to the physical relationship between two components, wherein the components are directly connected to each other (e.g., by welding, self-piercing riveting (SPR), flowing drill screws (FDS), structural adhesive, etc.) or indirectly connected by one or more intermediate components.

[0107] As used herein, the terms “vehicle,” “of a vehicle,” “automobile,” or other similar terms generally refer to passenger cars, sports cars, sports utility vehicles (SUVs), buses, trucks, and various commercial vehicles, including passenger cars, hybrid vehicles, electric vehicles, hybrid electric vehicles, electric-based private vehicles (PBVs), hydrogen-powered vehicles, and other alternative fuel vehicles (e.g., those not derived from petroleum fuels).

[0108] In the following, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0109] Figure 1 This is a partial exploded perspective view of a vehicle body to which a seat belt mounting structure according to the disclosed embodiments can be applied.

[0110] refer to Figure 1 The seat belt mounting structure 100 of the vehicle body according to the disclosed embodiment can be applied to, for example, the body 1 of a dedicated mobility vehicle (hereinafter referred to as "PBV").

[0111] PBVs can be used as electric vehicle-based living module vehicles to provide users with a variety of customized services during their journey from their origin to their destination.

[0112] In one example, a PBV can be manufactured as a monocoque design with a spacious interior. PBVs can also incorporate oriented seating within the interior space. The body of a PBV can be manufactured in various shapes and sizes depending on its purpose and / or use.

[0113] PBV bodies can be used for various vehicle types, such as ride-hailing vehicles used to transport passengers, delivery vehicles used to transport goods, and special vehicles such as ambulances.

[0114] In this invention, the reference direction of the components described below can be set as the front-rear direction of the vehicle body (e.g., the vehicle body length direction or longitudinal direction), the vehicle width direction (e.g., the lateral or left-right direction), and the vertical direction (e.g., the height direction) with reference to the vehicle body.

[0115] In this specification, the term "top," "upper," or "upper surface" of an assembly refers to the end, cross-section, or surface of the relatively higher assembly in the diagram; the term "bottom," "lower," or "lower surface" of an assembly refers to the end, cross-section, or surface of the relatively lower assembly in the diagram.

[0116] In this invention, the term "end" of an assembly (e.g., one end, the other end, or both ends, etc.) refers to the end of the assembly in any direction, and the term "end portion" of an assembly (e.g., one end, the other end, both ends, the front end, or the rear end, etc.) refers to the portion of the assembly that includes that end portion.

[0117] The body 1 of the PBV may include side structures 3 arranged on each side along the width direction of the vehicle, and a roof structure 6 connected to the upper part of the side structures 3.

[0118] The side structure 3 may be equipped with doors (not shown), such as sliding doors or swing doors. The side structure 3 may include a front pillar 4a, a middle pillar 4b, a rear side pillar 5, and a rear pillar 4c.

[0119] For ease of understanding, front pillar 4a, middle pillar 4b, rear side pillar 5, and rear pillar 4c are defined, which can be the A-pillar, B-pillar, C-pillar, and D-pillar used in the industry.

[0120] The roof structure 6 can be connected to the upper part of the side structure 3. The roof structure 6 may include a roof panel 7. The roof structure 6 may include a high roof module.

[0121] As an example, the body 1 of the PBV can be used as a ride-hailing vehicle, which can be opened through a sliding door between the center pillar 4b and the rear side pillar 5 to transport wheelchair users with mobility impairments.

[0122] The seat belt assembly 8 can be installed on the side structure 3. In one example, the seat belt assembly 8 can be installed in a position corresponding to the rear seat in the vehicle. In another example, the seat belt assembly 8 can be installed in a position corresponding to the shoulder of a wheelchair occupant.

[0123] The seat belt assembly 8 may include a retractor 9 for winding or unwinding the seat belt 8a. The construction and operation of the seat belt assembly 8 will be apparent to those skilled in the art, and therefore a detailed description is omitted.

[0124] The seat belt mounting structure 100 of the vehicle body according to the disclosed embodiment is configured to mount the seat belt assembly 8 on the side structure 3 of the vehicle body 1.

[0125] The seat belt mounting structure 100 of the vehicle body according to the disclosed embodiment can provide a structure that enhances the installation strength of the seat belt assembly 8 without the need for reinforcing materials.

[0126] The seat belt mounting structure 100 of the vehicle body according to the disclosed embodiment can provide a structure for mounting the seat belt assembly 8 to the upper part of the rear side pillar 5, so that wheelchair occupants can easily wear the seat belt 8a.

[0127] Figure 2 This is a top view showing the seat belt mounting structure of a vehicle body according to the disclosed embodiment. Figure 3 and Figure 4 This is a perspective view showing the seat belt mounting structure of a vehicle body according to the disclosed embodiment.

[0128] refer to Figures 1 to 4 The seat belt mounting structure 100 of the vehicle body according to the disclosed embodiment may include a roof side beam 10, a gusset plate assembly 20, a transverse top beam 60, a longitudinal top beam 70, and a connecting bracket 80.

[0129] In the disclosed embodiments, the roof side beam 10 may be disposed on the upper part of the side structure 3. The roof side beam 10 may be arranged along the front-rear direction of the vehicle body and may be connected to the upper parts of the front pillar 4a, the middle pillar 4b, the rear side pillar 5, and the rear pillar 4c.

[0130] The roof side beam 10 can be connected to the roof panel 7 of the roof structure 6.

[0131] In the disclosed embodiments, the gusset plate assembly 20 mounts the retractor 9 of the seat belt assembly 8 and is configured to enhance the mounting strength of the retractor 9.

[0132] In the disclosed embodiments, the gusset assembly 20 may be connected to the pillar connection 11 of the roof side beam 10, which is connected to the upper part of the rear side pillar 5.

[0133] Figure 5 and Figure 6 This is an exploded perspective view showing the seat belt mounting structure of a vehicle body according to the disclosed embodiment.

[0134] refer to Figures 4 to 6 In the disclosed embodiments, the gusset assembly 20 may include a main gusset unit 21 and an extension gusset unit 41.

[0135] The main support plate unit 21 can be connected to the column connection part 11 of the roof side beam 10 along the width direction of the vehicle.

[0136] Figure 7 This is a perspective view showing the main support plate unit of the gusset plate assembly applied to a seat belt mounting structure of a vehicle body according to the disclosed embodiment. Figure 8 It is along Figure 4 A cross-sectional view along line AA in the middle.

[0137] The main support plate unit 21 may include a lower corner support plate member 23 and an upper corner support plate member 25, such as Figure 7 and Figure 8 As shown.

[0138] The lower corner brace member 23 can be connected to the column connection portion 11 of the roof side beam 10 along the vehicle width direction, and can also be connected to the retractor 9, such as... Figure 1 As shown.

[0139] The lower corner support member 23 may include a lower flange 27 formed on each side along the front-rear direction of the vehicle body, and a lower molded part 29 formed downward from the lower flange 27.

[0140] The lower forming part 29 may have mounting holes 31 to mount the retractor 9 to the gusset assembly 20.

[0141] The upper corner brace member 25 can be connected to the column connection part 11 of the roof side beam 10 along the vehicle width direction, and can be connected to the upper part of the lower corner brace member 23.

[0142] The upper corner support member 25 may include an upper flange 33 formed on each side along the front-rear direction of the vehicle body, and an upper molded part 35 formed downward from the upper surface between the upper flanges 33.

[0143] The upper flange 33 can be connected to the lower flange 27 of the lower corner support member 23. The upper molded part 35 can be connected to the lower molded part 29 of the lower corner support member 23.

[0144] The extension gusset plate unit 41 can be connected to the main gusset plate unit 21 along the vehicle width direction.

[0145] Figure 9 This is an exploded perspective view showing an extended gusset unit of a gusset assembly for a seatbelt mounting structure applied to a vehicle body according to a disclosed embodiment. Figure 10 It is along Figure 4 A cross-sectional view along the BB line.

[0146] like Figure 9 and Figure 10 As shown, the extension gusset plate unit 41 may include a lower extension member 43 and an upper extension member 45.

[0147] The lower extension member 43 can be connected to the lower corner brace member 23 along the vehicle width direction.

[0148] The lower extension member 43 may include a first component 47 which may be connected to a portion of the lower corner brace member 23; and a second component 49 which may be connected to the transverse top beam 60 and the longitudinal top beam 70, as described below.

[0149] The first component 47 can be connected to the edge of the mounting hole 31 in the lower corner support member 23. The first component 47 can also be connected to the lower flange 27 and the lower molded part 29 at the edge of the mounting hole 31.

[0150] The second component 49 may extend from the first component 47 along the width direction of the vehicle, and its width is smaller than that of the first component 47. The second component 49 may be formed in a downward shape on both sides along the front-rear direction of the vehicle body.

[0151] The upper extension member 45 can be connected to the upper corner brace member 25 and the lower extension member 43 along the vehicle width direction.

[0152] The upper extension member 45 can be connected to the upper part of the upper corner brace member 25 and the first part 47 of the lower extension member 43.

[0153] refer to Figures 4 to 6 In the disclosed embodiments, the transverse top beam 60 may be configured as the roof structure 6 (see...). Figure 1 ) components.

[0154] The transverse top beam 60 can be connected along the width direction of the vehicle to the gusset plate assemblies 20 located on both sides of the vehicle body 1.

[0155] The transverse top beam 60 can be connected along the vehicle width direction to the extension gusset unit 41 of the gusset assembly 20. For example... Figure 9 As shown, the two ends of the transverse top beam 60 can be connected to the second part 49 of the lower extension member 43 in the extension gusset plate unit 41.

[0156] The transverse top beam 60 can be configured as an opening cross-section formed downwards on both sides along the front-rear direction of the vehicle body.

[0157] refer to Figure 5 , Figure 6 and Figure 9 In the disclosed embodiments, the longitudinal top beam 70 may be provided as another component of the roof structure 6.

[0158] The longitudinal top beam 70 can be arranged parallel to the front and rear directions of the vehicle body on the upper part of the vehicle body 1, and can be connected to the corner brace assembly 20 and the transverse top beam 60.

[0159] In one example, the longitudinal top beam 70 may be provided with two main beams arranged parallel to each other in the longitudinal direction of the vehicle body. The longitudinal top beam 70 may be connected at right angles to the extension gusset plate unit 41 and the transverse top beam 60.

[0160] Each of the longitudinal top beams 70 includes a first top beam member 71 and a second top beam member 72.

[0161] The first top beam component 71 can be connected to the front top beam 6a along the front-rear direction of the vehicle body. The front top beam 6a is connected to both sides of the vehicle body 1 along the width direction of the vehicle body, such as the front of the side structure 3.

[0162] The second top beam component 72 can be connected to the rear top beam 6b along the front-rear direction of the vehicle body, and the rear top beam 6b is connected to the rear of the side structure 3 along the width direction of the vehicle body.

[0163] The first top beam member 71 and the second top beam member 72 may be spaced apart from each other, for example, spaced apart from each other in the longitudinal direction of the vehicle body. The spaced ends of the first top beam member 71 and the second top beam member 72 may be defined as free ends 71a and 72a.

[0164] Each of the first top beam member 71 and the second top beam member 72 may include beam forming elements 71b and 72b formed on the free ends 71a and 72a opposite to each other.

[0165] Beam forming parts 71b and 72b can be connected to the second part 49 of the lower extension member 43 and both ends of the transverse top beam 60. That is, the connection between the lower extension member 43 and the transverse top beam 60 can be connected to beam forming parts 71b and 72b.

[0166] The connection between the lower extension member 43 and the transverse top beam 60 can be formed as a top beam overlap 73. The top beam overlap 73 can be connected to the beam forming parts 71b and 72b of the first top beam member 71 and the second top beam member 72 in a three-layer manner.

[0167] refer to Figures 4 to 6 In the disclosed embodiments, the connecting bracket 80 is configured to connect the gusset plate assembly 20, the transverse top beam 60, and the longitudinal top beam 70.

[0168] The connecting bracket 80 can be configured to enhance the connection strength of the gusset plate assembly 20, the transverse top beam 60 and the longitudinal top beam 70.

[0169] The connecting bracket 80 can be connected at right angles to the extension gusset unit 41, the transverse top beam 60 and the longitudinal top beam 70 of the gusset assembly 20.

[0170] The connecting bracket 80 can be connected to the second part 49 of the lower extension member 43, a part of the upper extension member 45, both ends of the transverse top beam 60, and the longitudinal top beam 70.

[0171] Figure 11 This is an exploded perspective view showing the engagement bracket of a seat belt mounting structure applied to a vehicle body according to the disclosed embodiment. Figure 12 It is along Figure 4 A cross-sectional view of the CC line.

[0172] like Figure 11 and Figure 12 As shown, the engagement bracket 80 may include a first engagement flange 81, a second engagement flange 83, and an engagement molding 85.

[0173] The first engagement flange 81 may be formed on one side of the engagement bracket 80 along the vehicle width direction and may be connected to a portion of the upper extension member 45.

[0174] The second engagement flange 83 may be formed on each side of the engagement bracket 80 along the front-rear direction of the vehicle body and may be connected to the longitudinal top beam 70.

[0175] The joining molded part 85 may be formed on the other side of the joining bracket 80 along the vehicle width direction. The joining molded part 85 may be formed in a shape that extends from the upper surface to the lower surface between the second joining flanges 83.

[0176] In the engagement bracket 80, the upper surfaces between the second engagement flanges 83 can be connected to the second part 49 of the lower extension member 43, which engages with each other, and to both ends of the transverse top beam 60. The engagement molding part 85 can be connected to the lower molding portions at both ends of the transverse top beam 60.

[0177] Figure 13 It is along Figure 4 Sectional view of the DD line in the middle. Figure 14 This is a perspective view showing an example of the installation of a seat belt assembly applied to a vehicle body according to a disclosed embodiment of the seat belt mounting structure.

[0178] refer to Figure 4 , Figure 5 and Figure 13 The gusset assembly 20 according to the disclosed embodiments may include a groove 51.

[0179] The groove 51 can be configured to install the retractor 9 of the seat belt assembly 8, such as Figure 14 As shown.

[0180] The groove 51 may be formed between the lower corner support member 23 and the upper corner support member 25, and between the lower extension member 43 and the upper extension member 45.

[0181] The groove 51 can be connected to the mounting hole 31 formed in the lower corner support member 23. That is, the groove 51 can be formed as a retractor mounting space connected to the mounting hole 31.

[0182] The retractor 9 can be placed in the groove 51 through the mounting hole 31 of the lower corner support member 23 and can be connected to the edge of the mounting hole 31. The retractor 9 can be engaged with the edge of the mounting hole 31 by fastening members 53 (e.g., bolts and nuts).

[0183] In the gusset assembly 20 that forms the groove 51, the connection between the lower gusset member 23 and the lower extension member 43 can be formed as a gusset overlap 55.

[0184] The retractor 9 can be placed in the groove 51 through the mounting hole 31 of the lower corner support member 23, and can be engaged with the lower corner support member 23 and the corner support overlapping portion 55 along the edge of the mounting hole 31 by the fastening member 53.

[0185] refer to Figure 11 and Figure 13 A closed section 57 may be formed between the joined gusset plate assembly 20, the transverse top beam 60 and the joining bracket 80.

[0186] The closed section 57 may be formed between the lower extension member 43, both ends of the transverse top beam 60, and the connecting bracket 80. The closed section 57 may be formed between the overlapping portion 73 of the top beam and the connecting bracket 80.

[0187] The closed section 57 can be connected to the groove 51 along the vehicle width direction.

[0188] A connecting section 59 may be formed between the connection portion of the connecting bracket 80 and the upper extension member 45 and the lower extension member 43. The connecting section 59 may be located between the groove 51 and the closing section 57, and may be connected to the groove 51 and the closing section 57 in the vehicle width direction.

[0189] Reference Figures 1 to 14 The assembly process and operation of the seat belt mounting structure 100 of the vehicle body according to the disclosed embodiment are described in detail.

[0190] In the disclosed embodiment, a side structure 3 is provided, which is attached to both sides of the floor structure along the vehicle width direction. The side structure 3 includes a front pillar 4a, a middle pillar 4b, a rear side pillar 5, and a rear pillar 4c.

[0191] In the disclosed embodiment, the roof side beam 10 is connected to the upper part of the front pillar 4a, the middle pillar 4b, the rear side pillar 5, and the rear pillar 4c along the front-rear direction of the vehicle body.

[0192] A front roof beam 6a can be connected to the front of the roof side beam 10 along the vehicle width direction. A rear roof beam 6b can be connected to the rear of the roof side beam 10 along the vehicle width direction.

[0193] The front roof beam 6a can be connected to a first roof beam member 71, which is connected to a longitudinal roof beam 70 along the front-rear direction of the vehicle body. The rear roof beam 6b can be connected to a second roof beam member 72, which is connected to the front-rear direction of the vehicle body.

[0194] The facing beam forming parts 71b and 72b of the first top beam member 71 and the second top beam member 72 can be connected to both ends of the transverse top beam 60.

[0195] In this state, the first assembly process can be performed, connecting the lower corner support plate member 23 and the upper corner support plate member 25 of the main support plate unit 21 to the column connection part 11 of the roof side beam 10.

[0196] In the first assembly process, the lower corner support member 23 can be connected to the pillar connection portion 11 along the vehicle width direction. The upper corner support member 25 can be connected to the pillar connection portion 11 along the vehicle width direction and can be connected to the lower flange 27 of the lower corner support member 23 via the upper flange 33. The upper molded part 35 of the upper corner support member 25 can be connected to the lower molded part 29 of the lower corner support member 23.

[0197] The second assembly process can be performed to connect the lower extension member 43 and the upper extension member 45 of the extension gusset plate unit 41 to the main gusset plate unit 21 and the longitudinal top beam 70.

[0198] In the second assembly step, the first component 47 of the lower extension member 43 can be connected along the vehicle width direction to the lower flange 27 and the lower forming part 29 of the lower corner gusset unit 23. The first component 47 can be connected to the edge of the mounting hole 31 formed in the lower corner gusset member 23. The second component 49 of the lower extension member 43 can be connected to the beam forming parts 71b and 72b of the longitudinal top beam 70 and both ends of the transverse top beam 60.

[0199] In the second assembly process, the upper extension member 45 can be connected along the vehicle width direction to the upper part of the upper corner brace member 25 and the first part 47 of the lower extension member 43.

[0200] The gusset assembly 20, which consists of the main support plate unit 21 and the extension gusset plate unit 41, can be assembled through a first assembly process and a second assembly process.

[0201] The extended gusset unit 41, the transverse top beam 60, and the longitudinal top beam 70 of the gusset assembly 20 can be connected in the vertical direction. Inside the gusset assembly 20, a groove 51 that connects to the mounting hole 31 and a connecting section 59 that connects to the groove 51 in the vehicle width direction can be formed.

[0202] A third assembly step can be performed, in which the joining bracket 80 is attached to the extended gusset plate unit 41, the transverse top beam 60 and the longitudinal top beam 70 of the gusset plate assembly 20 connected in the cross direction.

[0203] In the third assembly step, the connecting bracket 80 can be connected to the upper extension member 45 via the first connecting flange 81 and to the longitudinal top beam 70 via the second connecting flange 83. The connecting bracket 80 can be connected to the lower extension member 43 via the upper surface between the second connecting flanges 83, and can be connected to both ends of the transverse top beam 60 via the connecting molding 85. A closing section 57 can be formed between the connected extension gusset plate unit 41, the transverse top beam 60 and the connecting bracket 80. The closing section 57 can be connected to the groove 51 along the vehicle width direction via the connecting section 59.

[0204] The fourth assembly step can be performed, in which the retractor 9 of the seat belt assembly 8 is installed into the groove 51 of the gusset assembly 20.

[0205] In the fourth assembly step, the retractor 9 can be placed in the groove 51 through the mounting hole 31 of the lower corner gusset member 23. The retractor 9 can be engaged with the lower corner gusset member 23 and the corner gusset overlapping portion 55 along the edge of the mounting hole 31 by the fastening member 53.

[0206] After the fourth assembly process is completed, the roof panel 7 of the roof structure 6 can be connected to the front roof beam 6a, the rear roof beam 6b, the roof side beam 10, the corner brace assembly 20, the transverse roof beam 60 and the longitudinal roof beam 70, as well as the connecting bracket 80.

[0207] According to the disclosed embodiment of the vehicle body seat belt mounting structure 100, the gusset assembly 20 can be connected to the pillar connection portion 11 of the roof side beam 10, which is connected to the upper part of the rear side pillar 5.

[0208] According to the disclosed embodiment of the vehicle body seat belt mounting structure 100, the gusset assembly 20 can be connected to the longitudinal top beam 70, and the transverse top beam 60 can be connected to the gusset assembly 20 and the longitudinal top beam 70.

[0209] According to the disclosed embodiment, the seat belt mounting structure 100 of the vehicle body has a coupling bracket 80 connected to a longitudinal top beam 70 and is also connectable to a gusset plate assembly 20 and a transverse top beam 60.

[0210] According to the disclosed embodiment of the vehicle body seat belt mounting structure 100, the retractor 9 of the seat belt assembly 8 is located in the groove 51 of the gusset assembly 20 and can engage with the gusset assembly 20.

[0211] The gusset assembly 20, the transverse top beam 60, and the longitudinal top beam 70 can be connected along the vehicle width direction via the connecting bracket 80. The groove 51, connecting section 59, and closing section 57 formed by the gusset assembly 20, the transverse top beam 60, and the longitudinal top beam 70 can be connected along the vehicle width direction.

[0212] In other words, the cross sections of the groove 51, the connecting section 59, and the closed section 57 can be connected along the width direction of the vehicle.

[0213] Therefore, the seat belt mounting structure 100 of the vehicle body according to the disclosed embodiment can form a load path LP1 (see Figure 2 The load path transmits the load concentrated on the corner gusset assembly 20 along the vehicle width direction through the cross-section of the groove 51, connecting section 59 and closing section 57 on the upper part of the rear side pillar 5 via the retractor 9.

[0214] According to the disclosed embodiment, the vehicle seat belt mounting structure 100 can form a load path LP2 (see...). Figure 2 The load concentrated on the corner brace assembly 20 is transferred along the front-rear direction of the vehicle body from the upper part of the rear side pillar 5 through the roof side beam 10 and the longitudinal top beam 70 via the retractor 9.

[0215] The seat belt mounting structure 100 of the vehicle body according to the disclosed embodiment can enhance the installation strength of the seat belt assembly 8 mounted on the upper part of the rear side pillar 5. The seat belt mounting structure 100 of the vehicle body according to the disclosed embodiment can minimize or eliminate the use of reinforcing materials to enhance the installation strength of the seat belt assembly 8.

[0216] According to the disclosed embodiment of the vehicle body seat belt mounting structure 100, in a vehicle with an accessible ramp device, the seat belt assembly 8 can be mounted on the upper part of the rear side pillar 5.

[0217] According to the seat belt mounting structure 100 of the vehicle body in the disclosed embodiment, wheelchair passengers riding in the vehicle can easily wear seat belts 8a.

[0218] While the invention has been described in conjunction with embodiments now considered practical, it should be understood that the invention is not limited to the disclosed embodiments. Rather, the invention is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the claims.

Claims

1. A seat belt mounting structure for a vehicle body, comprising: The roof side beam connects to the upper part of the rear side pillar located on the side of the vehicle body; A gusset assembly is connected to the column connection of the roof side beam to install the retractor of the seat belt assembly; as well as A transverse top beam is connected to the gusset plate assembly along the width direction of the vehicle.

2. The seat belt mounting structure according to claim 1 further includes: A longitudinal top beam is arranged parallel to the front-rear direction of the vehicle body on the upper part of the vehicle body and is connected to the gusset plate assembly and the transverse top beam.

3. The seat belt mounting structure according to claim 2 further includes: The connecting bracket is connected to the gusset plate assembly, the transverse top beam, and the longitudinal top beam.

4. The seat belt mounting structure according to claim 3, wherein, A groove for mounting the retractor is formed in the gusset plate assembly.

5. The seat belt mounting structure according to claim 4, wherein: A closed section is formed between the joined gusset plate assembly, the transverse top beam, and the joining bracket, and The closed section is connected to the groove along the width direction of the vehicle.

6. A seat belt mounting structure for a vehicle body, comprising: The roof side beam connects to the upper part of the rear side pillar located on the side of the vehicle body; The gusset assembly includes: The main support plate unit is connected to the column connection portion of the roof side beam to install the retractor of the seat belt assembly; and An extension gusset plate unit is connected to the main gusset plate unit along the vehicle width direction; A transverse top beam, connected along the vehicle width direction to the extended gusset plate unit; and A longitudinal top beam is arranged parallel to the front-rear direction of the vehicle body on the upper part of the vehicle body and is connected to the extended gusset plate unit and the transverse top beam.

7. The seat belt mounting structure according to claim 6 further includes: The connecting bracket is connected to the extension gusset plate unit, the transverse top beam, and the longitudinal top beam.

8. The seat belt mounting structure according to claim 6, wherein, The main support plate unit includes: The lower corner support plate component is connected to the column connection and to the retractor, and The upper corner brace member is connected to the column connection and to the upper part of the lower corner brace member.

9. The seat belt mounting structure according to claim 8, wherein, The extended gusset plate unit includes: The lower extension member is connected to the lower corner brace member along the vehicle width direction, and is also connected to the longitudinal top beam and the transverse top beam. The upper extension member is connected to the upper corner brace member and the lower extension member along the vehicle width direction.

10. The seat belt mounting structure according to claim 9, wherein: Grooves are formed between the lower corner support member and the upper corner support member, and between the lower extension member and the upper extension member.

11. The seat belt mounting structure according to claim 10, further comprising: The connecting bracket is connected to the lower extension member, the transverse top beam, and the longitudinal top beam.

12. The seat belt mounting structure according to claim 10, wherein, The retractor is disposed in the groove through a mounting hole formed in the lower corner support member and is connected to the edge of the mounting hole.

13. The seat belt mounting structure according to claim 9, wherein: The connection between the lower corner brace member and the lower extension member is formed as a corner brace overlap portion; and The connection portion of the lower extension member connected to the longitudinal top beam and the transverse top beam is formed as a top beam overlap portion.

14. The seat belt mounting structure according to claim 13, wherein, The retractor is disposed in a mounting hole formed in the lower corner gusset member and is mounted to the lower corner gusset member and the overlapping portion of the corner gusset along the edge of the mounting hole.

15. The seat belt mounting structure according to claim 10, wherein: The connecting bracket is connected to the lower extension member, the transverse top beam, and the longitudinal top beam; A first closed section is formed between the joined lower extension member, the transverse top beam, and the joining bracket; and The groove is connected to a second closed section along the width direction of the vehicle.

16. The seat belt mounting structure according to claim 9, wherein, Each of the longitudinal top beams includes: The first top beam component is connected to the front top beam located at the front of both sides of the vehicle body along the vehicle width direction; and The second top beam component is connected to the rear top beam located on both sides of the vehicle body in the width direction.

17. The seat belt mounting structure according to claim 16, wherein, Each of the first top beam member and the second top beam member includes: A beam forming element is formed on its free ends facing each other and connected to the lower extension member and the transverse top beam connection.

18. The seat belt mounting structure according to claim 7, wherein: The roof side beam, the gusset plate assembly, the transverse top beam, the longitudinal top beam, and the connecting bracket are all connected to the roof panel.

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