KR102929007B1 - Frame module for purpose build vehicle - Google Patents

Abstract

The present invention relates to a purpose-based vehicle frame module, comprising a center module, a front module coupled to the front of the center module and having a front bumper provided at the front, and a fastening member detachably coupling the front module and the center module, and is manufactured using an aluminum material, thereby maintaining rigidity and reducing weight.

Description

FRAME MODULE FOR PURPOSE BUILD VEHICLE

The present invention relates to a purpose-based vehicle frame module, and more particularly, to a purpose-based vehicle frame module that can improve the fuel efficiency of an eco-friendly vehicle through weight reduction and maintain rigidity.

Typically, a commercial vehicle frame module plays an important role in ensuring the overall stability of the vehicle, and may include a front module, a center module, and a rear module.

The frame of a vehicle refers to the skeleton on which the chassis components or body can be installed. It must be able to sufficiently support the vertical load caused by the vehicle's propulsion force, braking action, centrifugal force during steering, impact force from the road surface, weight of the vehicle body, etc., and various reaction forces, such as deformation or torsion, tension, compression, and vibration, and it must also be structured to sufficiently absorb the collision energy applied to the vehicle in the event of a collision.

Due to the diversification of the automobile market, the body is being changed in various ways to suit its purpose, such as from the existing press monocoque method to PBV (Purpose Built Vehicle) and space frame.

In particular, low-cost EV vehicles require a body structure that breaks away from the conventional method to maximize profitability.

However, conventional frame modules are made of steel to maintain rigidity, which reduces fuel efficiency due to the vehicle's own weight. Therefore, there is a need to improve this issue.

The information contained in this background section is intended to enhance understanding of the background of the invention and may include matters that are not prior art already known to a person of ordinary skill in the art to which this technology pertains.

The background technology of the present invention is published in Korean Patent Publication No. 10-0551261 (registered on February 3, 2006, title of invention: Rear frame engine module mounting structure of a bus).

The present invention has been devised to improve the above-mentioned problems, and its purpose is to provide a purpose-based vehicle frame module that improves the fuel efficiency of an eco-friendly vehicle through weight reduction, maintains rigidity, and has improved assembly ability.

A purpose-based vehicle frame module according to the present invention may include a center module, a front module coupled to the front of the center module and having a front bumper provided at the front, and a fastening member detachably coupling the front module and the center module.

Additionally, at least one of the center module and the front module can be manufactured including an aluminum material.

In addition, the center module includes a pair of center side members and a plurality of center cross members connecting the center side members, and a fixing bracket for fixing the center cross members may be formed on each facing surface of the center side members.

In addition, the fixed bracket may include an attachment piece attached to the inner surface of the center side member, a support piece extending to one side of the attachment piece to support the center cross member, and a reinforcing piece supporting the support piece.

Additionally, a reinforcing rib connecting opposing surfaces may be formed on the inner surface of the center side member.

Additionally, the front module may include a pair of front side members, a front cross member disposed between rear ends of the front side members, and a front undercross member disposed between front ends of the front side members.

Additionally, a reinforcing portion may be formed on one side of the front side member.

Additionally, a support rib that is inserted into the interior of the front cross member may be formed on both facing sides of the front side member.

In addition, the front bumper may include a bumper beam and a bumper support portion formed as a pair parallel to the bumper beam and coupled to the front module, and an insertion groove portion into which the bumper support portion is inserted may be formed at the front end of the front side member.

In addition, the fastening member may include a fastening piece formed to extend from each end of the front side member, a fastening groove formed in the center side member to be inserted into the fastening piece, and a fastening member that fastens the fastening piece and the fastening groove to each other.

In addition, the above-mentioned binding member may have a boss portion formed on each side that extends to the inner surface of the opposite binding groove portion and to which the binding member is joined.

The purpose-based vehicle frame module according to the present invention is modularized into a single part for each of the center module and the front module, and the connection portions of each module are configured by bolt joints, thereby improving the assembling ability, and by varying the length of the center module, it is possible to respond to the length of various commercial vehicles, thereby enabling the design and manufacture of various purpose-based vehicles that meet the needs of various consumers while consuming minimal time and cost.

In addition, the present invention can minimize welding beads by an assembly structure between a center module and a front module, and can ensure design certainty and common use of parts.

In addition, the present invention has a structure in which the fastening portions for assembling the center module and the front module are fastened from the inside and outside, thereby increasing the fastening portion and improving the fastening strength, and has a structure in which the fastening portions are appropriately distributed inside and outside, thereby enabling weight reduction.

In addition, the center module and front module are made of aluminum to achieve weight reduction, and extrusion molding and hot stamping molding can be selectively applied to maintain strength and achieve weight reduction.

FIG. 1 is a perspective view illustrating a purpose-based vehicle frame module according to one embodiment of the present invention.
FIG. 2 is an exploded perspective view of a purpose-based vehicle frame module according to one embodiment of the present invention.
Figure 3 is a cross-sectional view taken along line AA of Figure 1.
FIG. 4 is a drawing showing the combination of a center crossmember of a purpose-based vehicle frame module according to one embodiment of the present invention.
FIG. 5 is a drawing showing the combination of a front cross member of a purpose-based vehicle frame module according to one embodiment of the present invention.
FIG. 6 is a drawing showing the combination of a front bumper of a purpose-based vehicle frame module according to one embodiment of the present invention.
FIG. 7 is a drawing showing the bonding of a fastening portion of a purpose-based vehicle frame module according to one embodiment of the present invention.
Fig. 8 is a BB cross-sectional view of Fig. 1.

Hereinafter, embodiments of a purpose-based vehicle frame module according to the present invention will be described with reference to the attached drawings. In this process, the thickness of lines and the sizes of components depicted in the drawings may be exaggerated for clarity and convenience. Furthermore, the terms described below are defined based on their functions in the present invention and may vary depending on the intentions or practices of the user or operator. Therefore, the definitions of these terms should be based on the contents throughout this specification.

FIG. 1 is a perspective view illustrating a purpose-based vehicle frame module according to one embodiment of the present invention, FIG. 2 is an exploded perspective view of a purpose-based vehicle frame module according to one embodiment of the present invention, FIG. 3 is an A-A cross-sectional view of FIG. 1, FIG. 4 is a drawing showing the coupling of a center cross member of a purpose-based vehicle frame module according to one embodiment of the present invention, FIG. 5 is a drawing showing the coupling of a front cross member of a purpose-based vehicle frame module according to one embodiment of the present invention, FIG. 6 is a drawing showing the coupling of a front bumper of a purpose-based vehicle frame module according to one embodiment of the present invention, FIG. 7 is a drawing showing the coupling of a fastening portion of a purpose-based vehicle frame module according to one embodiment of the present invention, and FIG. 8 is a B-B cross-sectional view of FIG. 1.

Referring to FIGS. 1 to 8, a purpose-based vehicle frame module (10) according to one embodiment of the present invention may include a center module (100), a front module (200), and a fastening member (400).

Referring to FIGS. 1 and 2, a frame module (10) including a center module (100), a front module (200), and a fastener (400) that connects them can be used as a common platform for a commercial eco-friendly vehicle.

In addition, at least one of the center module (100) and the front module (200) is manufactured using aluminum material to enable weight reduction.

A center module (100) may include a pair of center side members (110) and a plurality of center cross members (120) connecting the center side members (110). For example, the center side members (110) may be arranged as a pair facing each other, and a plurality of center cross members (120) may be provided and arranged in parallel between the center side members (110).

At this time, the center side member (110) may be designed to have different lengths depending on the size of the commercial vehicle.

Referring to FIGS. 3 and 4, the center cross member (120) is fixed by a fixing bracket (130). The fixing bracket (130) is formed to face each other on the facing surfaces of the center side member (110) and is joined to the center cross member (120) by welding.

As illustrated, the fixed bracket (130) may include an attachment piece (132) attached to the inner surface of the center side member (110), a support piece (134) extending to one side of the attachment piece (132) to support the center cross member (120), and a reinforcing piece (136) supporting the support piece (134).

The reinforcing piece (136) is formed in a shape that connects the end of the support piece (134) and the inner surface of the center side member (110), and can support the center cross member (120) that is fixed to the support piece (134).

The support pieces (134) are formed as a pair arranged vertically, and the support pieces (134) are spaced apart by the thickness of the center cross member (120). Therefore, the center cross member (120) can be inserted between the support pieces (134) and fixed by welding.

A space in which a battery (not shown) can be installed can be formed on the upper part of this center cross member (120).

In addition, a reinforcing rib (115) connecting opposing surfaces may be formed on the inner surface of the center side member (110). The reinforcing ribs (115) are formed in multiple numbers and are arranged parallel to the horizontal plane to achieve weight reduction of the center side member (110) while maintaining rigidity.

Referring to FIGS. 1, 2, and 5, the front module (200) may include a pair of front side members (210), a front cross member (220) positioned between the rear ends of the front side members (210), and a front undercross member (230) positioned between the front ends of the front side members (210).

A reinforcing member (212) is formed on one side of the front side member (210). The reinforcing member (212) is formed on the outer surface of the front side member (210) as illustrated in FIG. 5, and is formed as a rib formed in a grid pattern in which multiple horizontal and vertical lines intersect.

The front side member (210) can significantly reduce weight and maintain rigidity by means of a reinforcing member (212).

Support ribs (214) that are inserted into the interior of the front cross member (220) are formed on both facing sides of the front side member (210).

The front side member (210) and the front cross member (220) are joined by welding, and the support rib (214) is formed to protrude on both inner surfaces of the rear end of the front side member (210) in the same cross-sectional shape as the front cross member (220) as shown in the drawing, and is inserted into the inner surface of the front cross member (220), thereby improving the bonding strength of the welding area.

And, the front end of the front side member (210) is supported by the front undercross member (230). The front side member (210) is formed to extend downward, and a mounting piece (216) is formed on the inner surface, and the front undercross member (230) is mounted on the mounting piece (216) and bolted to be connected, thereby supporting the lateral load of the front side member (210).

The front module (200) can support the front and rear loads by the front side member (210), the front side load of the front module (200) by the front undercross member (230), and the rear side load of the front module (200) by the front cross member (220).

A front bumper (300) is provided on the front side of the front module (200). The front bumper (300) may include a bumper beam (310) and a bumper support member (320) formed as a pair parallel to the bumper beam (310) and coupled to the front module (200).

Referring to Fig. 6, an insertion groove (218) into which a bumper support member (320) is inserted is formed at the tip of the front side member (210), and each end of the bumper support member (320) is partially inserted into the insertion groove (218) and then fixed by bolting.

Each component including the above-mentioned center module (100) and front module (200) is made of aluminum, and extrusion molding and hot stamping molding can be selectively applied.

In one embodiment, the front side member (210) of the front module (200) is manufactured by hot stamping molding, thereby increasing strength and reducing weight while maintaining thickness.

Referring to FIGS. 2, 7, and 8, the fastening member (400) detachably connects the front module (200) and the center module (100), and may include a fastening member (410) formed to extend from each end of the front side member (210), a fastening groove (420) formed in the center side member (110) to be inserted into the fastening member (410), and a fastening member (430) that fastens the fastening groove (420) and the fastening member (410) to each other.

The fastening member (410) is formed in a plate shape formed longitudinally at each end of the front side member (210), and the fastening groove (420) is formed as a space into which the fastening member (410) can be inserted at the end of the center side member (110). That is, the center side member (110) is formed in a tubular shape, and a reinforcing rib (115) is formed inside, and the reinforcing rib (115) can be deleted from the fastening groove (420) to form a space into which the fastening member (410) can be inserted.

A boss portion (415) is formed in the binding member (410) and extends to the inner surface of the binding groove portion (420) facing each side, and to which a binding member (430) is coupled. The binding member (430) is formed as a bolt, and the binding member (430) can be screw-coupled to the boss portion (415) by penetrating through the outer and inner sides of the center side member (110), respectively.

Hereinafter, the manufacturing process of a purpose-based vehicle frame module according to one embodiment of the present invention will be described as follows.

A center module (100) and a front module (200) made of aluminum are manufactured.

The center module (100) is composed of a pair of center side members (110) arranged in parallel and a center cross member (120) connecting them. The center side members (110) are manufactured by extrusion molding, and a fixing bracket (130) is fixed to the facing surfaces by welding.

A reinforcing rib (115) connecting opposing surfaces is formed on the inner surface of the center side member (110), thereby improving structural rigidity.

The center side member (110) can be designed to have different lengths depending on the size of the commercial vehicle.

In addition, the center cross member (120) is inserted between the support pieces (134) of the fixed bracket (130) and fixed by welding. At this time, a reinforcing piece (136) for reinforcing rigidity is formed at the lower part of the support piece (134), thereby improving the supporting rigidity of the center cross member (120).

As described above, the center side member (110) and the center cross member (120) can be combined to modularize the center module (100) into one component.

The front module (200) is composed of a pair of front side members (210) arranged in parallel, a front cross member (220) connecting them, and a front undercross member (230).

The front side member (210) is manufactured by hot stamping molding, and a reinforcing member (212) formed in a grid pattern is formed on the outer surface. Accordingly, the front side member (210) can be designed with a structure that maximizes weight reduction while maintaining strength.

In addition, the front cross member (220) connects the rear end of the front side member (210) to support the rear side load, and the front undercross member (230) connects the front end of the front side member (210) to support the front side load.

A support rib (214) is formed protrudingly at the rear end of the front side member (210), and both ends of the front cross member (220) are inserted into the support rib (214) and then joined by welding. Afterwards, a connecting bar is attached to a mounting piece (216) formed on the inner surface of the front end of the front side member (210) and joined by bolting.

In this way, the front module (200) can be modularized into a single part by combining the front side member (210), front cross member (220), and front undercross member (230).

And, a front bumper (300) consisting of a bumper beam (310) and a bumper support member (320) is connected to the front end of the front module (200).

This is a pair of parallel bumper support members (320) whose ends are inserted into the insertion grooves (218) of the front side member (210) and fixed by being joined by a plurality of bolts.

Thereafter, the front module (200) and the center module (100) are mutually coupled by a coupling member (400). The coupling member (410) formed at the end of the front side member (210) is inserted into the coupling groove (420) of the center side member (110), and then the modules are coupled by coupling members (430) on the outside and inside, respectively, to be mutually fixed.

At this time, a boss portion (415) extending to the inner surface of the opposing center side member (110) is formed on both sides of the binding member (410), and the binding member (430) can be bonded to the outer and inner sides of the center side member (110), respectively, thereby improving the binding force.

As described above, the center module (100) and the front module (200) are each modularized into a single component, and the connection points for each module are configured with bolt joints, thereby improving the assembling efficiency, and by varying only the length of the center module (100), it is possible to accommodate the lengths of various commercial vehicles. This makes it possible to design and manufacture various purpose-based vehicles that meet the needs of various consumers while consuming minimal time and cost.

In addition, the welding beads can be minimized by the assembly structure between the center module (100) and the front module (200), and the design certainty and component commonality are possible. In addition, the center module (100) and the front module (200) are made of aluminum, so that weight reduction is achieved, and extrusion molding and hot stamping molding can be selectively applied, so that strength can be maintained and weight reduction can be realized.

While the present invention has been described with reference to the embodiments illustrated in the drawings, these are merely exemplary, and those skilled in the art will understand that various modifications and equivalent embodiments are possible. Accordingly, the true technical protection scope of the present invention should be defined by the following claims.

10: Frame module 100: Center module
110: Center side member 115: Reinforcing rib
120: Center cross member 130: Fixed bracket
132: Attachment piece 134: Support piece
136: Reinforcement 200: Front Module
210: Front side member 212: Reinforcement
214: Support rib 216: Fixing piece
218: Insert groove 220: Front cross member
230: Front undercross member 300: Front bumper
310: Bumper beam 320: Bumper support
400: Binding part 410: Binding part
415: Boss Department 420: Bonding Home Department
430: Absence of binding

Claims (11)

Center module;
A front module coupled to the front of the center module and having a front bumper at the front; and
Including a fastening member that detachably connects the front module and the center module,
The above center module comprises a pair of center side members,
The above front module includes a pair of front side members,
The above-mentioned fastening portion is a fastening piece formed to extend to each end of the front side member;
A binding groove formed in the center side member to be inserted into the binding section; and
Including a binding member that mutually binds the above binding portion and the binding groove portion,
In the above-mentioned binding member, a boss portion is formed on each side, which extends to the inner surface of the opposite binding groove portion, and to which the binding member is joined.
A purpose-based vehicle frame module, characterized in that the above-mentioned fastening member penetrates the outer and inner sides of the center side member and is screw-connected to the boss portion.
In paragraph 1,
A purpose-based vehicle frame module, characterized in that at least one of the center module and the front module is manufactured using an aluminum material.
In paragraph 1,
The above center module
Further comprising a plurality of center cross members connecting the above center side members;
A purpose-based vehicle frame module characterized in that a fixing bracket for fixing the center cross member is formed on each facing surface of the center side member.
In the third paragraph,
The above fixed bracket is an attachment piece attached to the inner surface of the center side member;
A support piece extending to one side of the above attachment piece and supporting the center cross member; and
A purpose-based vehicle frame module characterized by including a reinforcing member supporting the above-mentioned support member.
In the third paragraph,
A purpose-based vehicle frame module characterized in that a reinforcing rib connecting opposing surfaces is formed on the inner surface of the center side member.
In the third paragraph,
The above front module
A front cross member arranged between the rear ends of the front side members; and
A purpose-based vehicle frame module further comprising a front undercross member disposed between the lower portions of the front side members.
In paragraph 6,
A purpose-based vehicle frame module characterized in that a reinforcing portion is formed on one side of the front side member.
In paragraph 6,
A purpose-based vehicle frame module characterized in that a support rib inserted into the interior of the front cross member is formed on both opposing sides of the front side member.
In paragraph 6,
The above front bumper is a bumper beam; and
A bumper support member is formed as a pair parallel to the bumper beam and is coupled to the front module;
A purpose-based vehicle frame module characterized in that an insertion groove is formed at the tip of the front side member into which the bumper support part is inserted.
delete delete