KR20190124414A - Cargo box for commercial vehicle - Google Patents

Abstract

According to the present invention, a cargo box for a commercial vehicle is disclosed. According to the present invention, the cargo box for a commercial vehicle comprises: a floor portoin configured to form a flat plate shape by mixing a plurality of materials; a frame portoin configured to support the floor portion and formed with a structure of a grid shape; a front support portoin and a rear support portoin installed in a state of being erected at both sides of the floor portion; and a core portoin configured to connect the front support portion and the rear support portion, and extended in a longitudinal direction of the floor portion. The frame portion comprises: a side rail portion placed at both sides of the floor portion and extended along a longitudinal direction of the floor portion; a first support portion installed in a width direction of the floor portion and having both sides fixedly inserted into the side rail portion; and a second support portion installed in a longitudinal direction of the floor portion and configured to support a lower side of the first support portion.

Description

Loading box for commercial vehicles {CARGO BOX FOR COMMERCIAL VEHICLE}

The present invention relates to a loading box for a commercial vehicle, and more particularly, to a loading box using an aluminum frame and a composite material, thereby increasing the structural strength and reducing the weight of the loading box, thereby improving the fuel efficiency of the commercial vehicle. will be.

In general, commercial vehicles are provided with a loading box to facilitate the loading and unloading work while protecting the cargo loaded in the loading box from rain or snow. The loading box is widely used in one side open and close structure that can open and close one side and both sides open and close structure that can open and close both sides.

The loading box of a commercial vehicle mainly consists of press molding using a steel member and then welding the same.

Background art of the present invention is disclosed in Korean Unexamined Patent Publication No. 1997-0026377 (published on June 24, 1997, title of the invention: a volume change device of a containerized loading box of a van).

The present invention has been created to improve the above problems, the object of the present invention is to use the aluminum frame and composite to form a loading box, the structural strength can be increased and the weight of the loading box can be improved to improve fuel economy of commercial vehicles It is to provide a loading box for commercial vehicles.

Commercial vehicle loading box according to the present invention includes: a bottom portion forming a flat plate by mixing a plurality of materials, a frame portion supporting the bottom portion and being shaped into a lattice-shaped structure, and a front support portion installed on both sides of the bottom portion; A rear support portion and a core portion extending from the front support portion and the rear support portion and extending in the longitudinal direction of the bottom portion, the frame portion is located on both sides of the bottom portion side rail portion extending in the longitudinal direction of the bottom portion, the width of the bottom portion It is installed in the direction and both sides are inserted into the side rail portion fixed to the first support portion and the bottom portion is installed in the longitudinal direction and characterized in that it comprises a second support portion for supporting the lower side of the first support portion.

In addition, the side rail portion, the first support piece extending in the horizontal direction supporting the lower side of the first support portion, the second support piece and the first support piece and the first support piece facing the first support piece and covering the upper side of the first support piece; It characterized in that it comprises a side rail body connecting the two support pieces and facing the end of the first support.

In addition, the side rail portion and the first support portion is fixed by the first fastening portion, characterized in that the first support portion and the second support portion is fixed by the second fastening portion.

Commercial vehicle loading box according to the present invention, because the manufacturing box using a composite material and aluminum, the weight is reduced compared to the conventional and can reduce the deformation and assembly failure by welding.

1 is a perspective view schematically showing the structure of a loading box for a commercial vehicle according to an embodiment of the present invention.
Figure 2 is a perspective view showing a state in which the bottom portion and the wing panel portion separated from the loading box for commercial vehicles according to an embodiment of the present invention.
3 is a perspective view showing a frame unit according to an embodiment of the present invention.
Figure 4 is a bottom perspective view of the frame portion according to an embodiment of the present invention.
5 is a perspective view showing the main configuration of the frame portion according to an embodiment of the present invention.
6 is a view showing the main configuration of the first fastening portion according to an embodiment of the present invention.
7 and 8 are perspective views illustrating a coupling state of the first support and the second support according to an embodiment of the present invention.
9 and 10 are perspective views showing a coupling state of the first support portion and the side rail portion according to an embodiment of the present invention.
11 and 16 are perspective views showing a wing panel according to an embodiment of the present invention.
12 is a perspective view illustrating a core part, a rotating bracket part, a mounting bracket part, and a wing panel part according to an embodiment of the present invention.
Figure 13 is a perspective view showing a state in which the mounting bracket portion separated from the rotating bracket portion according to an embodiment of the present invention.
14 is a cross-sectional view showing a state in which the wing panel portion is separated from the mounting bracket portion according to an embodiment of the present invention.
15 is a perspective view illustrating a state in which a rotating bracket unit is installed in a core unit according to an exemplary embodiment of the present invention.

Hereinafter, a loading box for a commercial vehicle according to an embodiment of the present invention will be described with reference to the accompanying drawings. In this process, the thickness of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of description.

In addition, terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to the intention or convention of a user or an operator. Therefore, the definitions of these terms should be made based on the contents throughout the specification.

1 is a perspective view schematically showing a structure of a commercial vehicle loading box according to an embodiment of the present invention, Figure 2 is a view showing a state in which the bottom and wing panel separated from the commercial vehicle loading box according to an embodiment of the present invention. 3 is a perspective view illustrating a frame unit according to an embodiment of the present invention, FIG. 4 is a bottom perspective view of the frame unit according to an embodiment of the present invention, and FIG. 5 is according to an embodiment of the present invention. 6 is a perspective view illustrating a main structure of a frame part, and FIG. 6 is a view illustrating a main structure of a first fastening part according to an embodiment of the present invention, and FIGS. 7 and 8 are first support parts according to an embodiment of the present invention. 9 and 10 are perspective views illustrating a coupling state of the first support part and the side rails according to an embodiment of the present invention, and FIGS. 11 and 16 are views of the coupling state of the second support part. According to an embodiment of the invention 12 is a perspective view showing a panel portion, Figure 12 is a perspective view showing a core portion, a rotating bracket portion, a mounting bracket portion and a wing panel portion according to an embodiment of the present invention, Figure 13 is a mounting bracket according to an embodiment of the present invention 14 is a perspective view illustrating a state separated from the additional rotating bracket part, and FIG. 14 is a cross-sectional view illustrating a state in which the wing panel part is separated from the mounting bracket part according to an embodiment of the present invention, and FIG. 15 is an embodiment of the present invention. Is a perspective view showing a state in which the rotating bracket portion is installed in the core portion.

As shown in FIGS. 1 to 16, the commercial box loading box 1 according to the present invention includes a bottom portion 10, a front support portion 15, a rear support portion 17, a frame portion 20, and a first fastening portion. 60, the second fastening portion 70, the core portion 130, the rotating bracket portion 140, the mounting bracket portion 150, the sliding groove portion 160, the connecting fastening portion 170 and the wing panel portion 180 ) And the fixing bolt 190.

The bottom portion 10, in which a plurality of materials are mixed to form a flat plate shape, is formed in a plate shape in which a plurality of plate pieces are coupled to each other. And it is possible to reduce the weight of the commercial compartment loading box 1 by the bottom portion 10 formed of a lightweight material.

The bottom portion 10 is formed in a plate shape and extends in the longitudinal direction D of the loading box 1 for a commercial vehicle. A bottom portion 10 consisting of a plurality of members is installed successively along the width direction W of the commercial vehicle stack 1, and the bottom portions 10 facing each other form a step that is alternately coupled with each other. Since the first coupling step 12 and the second coupling step 14 form a step and are fitted in a staggered direction, the bottom part 10 can be easily disassembled and assembled. Therefore, only the damaged bottom portion 10 can be replaced, thereby reducing maintenance costs.

The method of manufacturing the bottom portion 10 has a step of preparing a thermoplastic resin composition. 100 parts by weight of a composition made of an olefin-based thermoplastic resin such as polyethylene or polypropylene or a combination with other materials is defined.

And, based on 100 parts by weight of the thermoplastic resin composition has a step of preparing 60 to 160 parts by weight of wood flour material. The humidity contained in the wood flour material pre-drys the wood flour material because it adversely affects the formation of the surface of the raw material and the product and causes voids. When drying wood flour, prolonged exposure to high temperatures causes volatile release, discoloration, odor and deterioration of wood components. Therefore, drying temperature should be lower than 200 ℃ if possible.

Wood flour can be made by grinding recyclable materials such as chips, shavings and sawdust into fine powder. The particle size of wood flour is in the range of 20 ~ 120mesh and the length-to-diameter ratio of wood flour is about 3: 1 to 5: 1.

And, based on 100 parts by weight of the thermoplastic resin composition has a step of preparing a coupling agent in 3 to 10 parts by weight. As the thermoplastic resin composition, polyethylene (PE), polyvinyl chloride (PVC), and polypropylene (PP) are used.

Coupling agents, also known as binders, are used to improve the bond between the thermoplastic resin composition, from which plastic is a material, and wood flour. In principle, the wood flour material has a hydrophilic polarity and the plastic thermoplastic resin composition has a hydrophobic nonpolar property, so that the bonding strength between the two materials is weak, so that the addition of the binder improves the new chemical bonding at the interface between the two materials.

Technically, the coupling agent increases the modulus of rupture (MOR) and modulus of elasticity (MOE), and also affects the dimensional stability, impact strength and wood powder dispersion.

After the thermoplastic resin composition, the wood flour material and the coupling agent are mixed, the bottom part 10 is extruded by an extruder.

In addition, before mixing the thermoplastic resin composition, the wood flour material and the coupling agent, it may further have a step of preparing 10 to 50 parts by weight of the reinforcing fibers based on 100 parts by weight of the thermoplastic resin composition.

To 100 parts by weight of a thermoplastic resin composition consisting of a single or combination of olefin-based thermoplastic resins such as polyethylene and polypropylene, wood powder material dried within a moisture content of 3% is mixed to 60 to 160 parts by weight of the thermoplastic resin composition, carbon fiber, glass fiber After mixing the reinforcing fibers, such as 10 to 50% by weight compared to the thermoplastic resin composition, and kneading using an extruder (Screw extruder), using an extrusion die to prepare a bottom portion 10 of the commercial box (1). .

The front support part 15 and the rear support part 17 are installed in the state which stood on both sides of the bottom part 10. FIG. The front support part 15 is installed in a state standing on one side of the bottom portion 10, the rear support part 17 facing the front support part 15 is installed in a state standing on the other side of the bottom portion (10). According to an embodiment, the front support part 15 has a plate shape, and the rear support part 17 functions as a door for opening and closing the loading box 100 for a commercial vehicle.

The frame part 20 supports the bottom part 10 and may be formed in various shapes within the technical concept of being molded into a lattice structure. Frame portion 20 according to an embodiment may be molded by aluminum extrusion. In addition, the frame portion 20 may be molded or extruded from glass fiber reinforced plastic. Glass fiber reinforced plastic refers to plastic reinforced with glass fibers.

Frame portion 20 according to an embodiment, the side rail portion 30 is located on both sides of the bottom portion 10 extending along the longitudinal direction (D) of the bottom portion 10, the bottom portion 10 Is installed in the width direction (W) of both sides are inserted into the side rail portion 30 is fixed in the longitudinal direction (D) of the first support portion 40 and the bottom portion 10 and the first support portion 40 It includes a second support 50 for supporting the lower side. The side rail part 30 and the first support part 40 are fixed by the first fastening part 60, and the first support part 40 and the second support part 50 are fixed by the second fastening part 70. do.

Side rail portion 30 is located on both sides of the bottom portion 10, and extends along the longitudinal direction (D) of the bottom portion (10). The side rail part 30 according to an embodiment supports the lower side of the first support part 40 and extends in the horizontal direction, and faces the first support piece 32 and the first support piece 32. A side rail body connecting the second support piece 34 covering the upper side of the support part 40 and the first support piece 32 and the second support piece 34 and facing the end of the first support part 40 ( 36).

The first support piece 32 and the second support piece 34 face each other and extend in the horizontal direction. The first support piece 32 extending in the horizontal direction from the lower side of the side rail body 36 supports the lower side of the first support part 40. The second support piece 34 covers the upper side of the first support part 40 and extends in the horizontal direction, and then covers the upper side of the edge of the bottom part 10 supported by the first support part 40. .

Inside the side rail body 36, a plurality of partition walls forming a plurality of through holes are provided. Therefore, the overall weight of the side rail portion 30 is reduced while structural rigidity is enhanced to prevent degradation of durability.

The side rail part 30 is located at both ends of the first support part 40, and is bent in a “c” shape toward the end of the first support part 40. Therefore, the structure in which the first support part 40 is inserted into the side rail part 30 and fixed is secured.

The first support part 40 is installed in the width direction W of the bottom part 10, and both sides are inserted into and fixed to the side rail part 30. The first support part 40 according to an embodiment supports the lower part of the bottom part 10 and extends in the horizontal direction, and the connection member 42 extending downward of the support member 41. And a first support body 43 extending downwardly from the connection member 42 and having a through hole therein, and extending below the first support body 43 and having a first fastening portion 60 therein. The core portion 62 includes a guide groove portion 45 is inserted to form a space for the slide movement.

A groove portion for moving the first core portion 62 in the width direction W of the bottom portion 10 is formed inside the guide groove portion 45 according to the exemplary embodiment. The inner end surface of the guide groove 45 forms a rectangular groove, and the lower side is formed with an open space. The guide groove 45 is a "c" shaped opening toward the lower side, the guide protrusion 46 is provided on the inner upper side of the guide groove 45 facing the upper side of the first core portion 62, A locking projection 47 is provided at an inner lower side of the guide groove 45 facing the lower side of the one core portion 62.

The guide protrusion 46 and the locking protrusion 47 extend in the width direction W of the bottom portion 10 like the support member 41, and have groove portions provided on the upper side and the lower side of the first core portion 62. It is inserted to guide the movement in the width direction W of the first core portion 62.

The second support part 50 is installed in the longitudinal direction D of the bottom part 10 and supports the lower side of the first support part 40. According to an embodiment, two second support parts 50 are provided in pairs and are installed below the first support part 40. The cross-sectional shape of the second support part 50 installed in the direction perpendicular to the first support part 40 is formed in a "c" shape. The second support part 50 according to the embodiment includes a second support body 52 which is vertically erected, and a wing member 54 extending in the horizontal direction from the upper side and the lower side of the second support body 52.

The second support body 52 forms a plurality of through holes in the width direction W of the bottom portion 10. Since the through hole is installed in parallel with each other inside the second support body 52, the weight of the second support part 50 can be lightened, and the structural rigidity can be further reinforced.

The wing member 54 provided on the upper side of the two wing members 54 supports the lower portion of the first support part 40. The guide groove 45 of the first support part 40 is installed in contact with the wing member 54 provided on the upper side, and is fixed by the second fastening part 70.

The side rail part 30 and the first support part 40 are fixed by the first fastening part 60, and the first support part 40 and the second support part 50 are fixed by the second fastening part 70. do. The first fastening part 60 according to an embodiment passes through the first core part 62 and the side rail part 30 inserted into the first support part 40, and then the first core part 62. It includes a first fastening bolt 67 is fastened to.

The first core part 62 is inserted into the guide groove 45 of the first support part 40, slides along the guide groove 45, and has a hexahedral shape. According to an embodiment, the first core part 62 may include a hexahedral first core body 63 inserted into the guide groove 45 and a first core body 63 facing the guide protrusion 46. It includes a first upper groove 64 to form a groove in the upper side and the first lower groove 65 for forming a groove in the lower side of the first core body 63 facing the locking projection (47). Therefore, since the guide protrusion 46 is inserted into the first upper groove 64 and the locking protrusion 47 is inserted into the first lower groove 65, the first core part 62 can be slidably moved. And the center of the first core body 63 is provided with a screw groove for fastening the first fastening bolt (67).

The second fastening part 70 according to an embodiment passes through the second core part 72 and the second support part 50 inserted into the first support part 40, and then the second core part 72. It includes a second fastening bolt 74 is fastened to. Since the detailed configuration of the second core portion 72 is the same as that of the first core portion 62, detailed description thereof will be omitted.

The core part 130 connects an upper side of the front support part 15 and the rear support part 17 and has a square tube shape extending in the longitudinal direction of the bottom part 10. The core portion 130 having a square tube shape is positioned above the center of the bottom portion 10, and both sides of the core portion 130 are connected to the front support portion 15 and the rear support portion 17.

The rotating bracket part 140 is installed in plural along the longitudinal direction of the core part 130, and is formed in various shapes within the technical concept in which the mounting bracket part 150 is connected to both sides of the rotating bracket part 140 to rotate. Can be. The rotating bracket unit 140 according to an embodiment includes a core body 142, a shaft member 146, and a fixing bracket 148.

The core body 142 is fixed to the upper side of the core portion 130. The core body 142 according to the exemplary embodiment includes a welding hole 143 and a mounting protrusion 144. The seating protrusions 144 are positioned at both sides of the core body 142 and form a mounting space for the shaft member 146 to be rotatably mounted. The core body 142 facing the upper side of the core portion 130 has a plate shape, and welding is added to the inside of the core body 142 to increase the welding area between the core body 142 and the core portion 130. The welding hole part 143 which is a hole for making it into it is formed. Therefore, when the core body 142 is fixed to the core portion 130 by welding, the space for welding is increased, so that the rotation bracket portion 140 may be more firmly fixed.

The shaft member 146 is located at both sides of the core portion 130 and is rotatably supported by the seating protrusion 144 of the core body 142. The shaft member 146 according to an embodiment is rotatably installed at both sides of the core body 142.

One side is connected to the shaft member 146 and the other side is fixed bracket 148 is connected to the mounting bracket portion 150, extending from the shaft member 146 is a plate shape facing the fastening portion 156. The shaft member 146 and the fixing bracket 148 may be rotated together. If necessary, the shaft member 146 may be fixed and only the fixing bracket 148 may be rotated.

The mounting bracket part 150 fixed to the rotating bracket part 140 includes a bracket body 152 and a fixing body 148 having a bracket body 152 having a mounting groove 154 for inserting the wing panel part 180 therein. And a fastening part 156 for fixing the 152. An end of the wing panel 180 is inserted into the mounting groove 154, and the fastening part 156 connected to the bracket body 152 is connected to the rotating bracket part 140. The fastening part 156 according to the exemplary embodiment includes a sliding groove part 160, a guide protrusion 162, a locking protrusion 164, and a connection fastening part 170.

The sliding groove 160 extending from the bracket body 152 is provided with a space for sliding movement of the moving body 172 of the connection fastening portion 170 is inserted therein.

The inner side of the sliding groove 160 according to an embodiment forms a groove for moving the moving body portion 172 along the longitudinal direction of the core portion 130. The inner end surface of the sliding groove 160 forms a rectangular groove, and one side facing the rotary bracket 140 forms an open space. The sliding groove 160 is a "c" shaped opening toward the rotating bracket portion 140, the guide protrusion 162 is installed inside the sliding groove 160 facing one side of the moving body portion 172. A locking protrusion 164 is installed inside the sliding groove 160 facing the other side of the moving body 172.

The guide protrusion 162 and the locking protrusion 164 extend in the longitudinal direction of the core portion 130, such as the support member 41, and are inserted into groove portions provided at one side and the other side of the movable body portion 172. The slide movement of the unit 172 is guided.

The connection fastening unit 170 according to an embodiment passes through the fixing bracket 148 of the movable body 172 and the rotating bracket 140 inserted into the first support 40, and then moves the body portion. It includes a moving restraint bolt 177 is fastened to (172).

The moving body part 172 is inserted into the sliding groove 160 of the first support part 40 and has a hexahedral shape that slides along the sliding groove 160. Moving body portion 172 according to an embodiment guides to form a groove in the fastening body 173 of the hexahedral-shaped fastening body 173 inserted into the sliding groove 160, the fastening body 173 facing the guide protrusion 162 And a locking groove 175 forming a groove in the fastening body 173 facing the groove 174 and the locking protrusion 164. Therefore, the guide protrusion 162 is inserted into the guide groove 174 and the locking protrusion 164 is inserted into the locking groove 175, so that the slide movement of the movable body 172 may be stably performed. And the center of the fastening body 173 is provided with a screw groove for fastening the moving restraint bolt 177.

The wing panel 180 is fixed in a state in which one side of the panel formed by the letter “a” is inserted into the mounting bracket 150. The wing panel unit 180 according to an embodiment includes a core panel member 182 formed of a composite material, an outer shell member 184 and a core panel member 182 installed on an outer side of the core panel member 182, and an outer shell. The inner bracket 186 is installed between the members 184 and fixed to the fixing bolt 190 penetrating the bracket body 152. The core panel member 182 is composed of a plurality of panels, and can be installed successively because the core panel member 182 is inserted into the mounting bracket part 150. In addition, the wing panel unit 180 may be further provided with a panel connection portion 188 at the bent portion. The wing panel 180 is bent in a "-" shape and both sides are provided with groove portions for inserting the core panel member 182.

Hereinafter, with reference to the accompanying drawings will be described in detail the operating state of the commercial vehicle loading box according to an embodiment of the present invention.

The openings of the side rail portions 30 are installed to face each other, and both ends of the first support portion 40 are inserted into the side rail portions 30. In this case, a plurality of first core parts 62 and second core parts 72 are inserted into the guide grooves 45 of the first support part 40 to allow the slide movement.

An end portion of the first support portion 40 is inserted into the side rail portion 30, and the first support piece 32 supports a lower portion of the first support portion 40. Since the first fastening bolt 67 passes through the first support piece 32 and then is fastened to the first core part 62 positioned inside the first support part 40, the first support part 40 is provided with sidelets. It is fixed to the part (30). Then, a separate piece penetrates through the second support piece 34 and is fixed to the support member 41 of the first support part 40. By this operation, a plurality of first support parts 40 are installed along the side rail part 30.

In the state where the second support part 50 is positioned below the first support part 40, the second core part 72 is slidably moved to a position facing the second support part 50. Since the second fastening bolt 74 penetrates the wing member 54 of the second support part 50 and then is fastened to the second core part 72 positioned inside the first support part 40, the first support part 40 is fixed. ) And the second support 50 is made.

The bottom portion 10 is supported by the first support portion 40 and is installed above the first support portion 40. The bottom portion 10 adjacent to each other may improve coupling force since the first coupling step 12 and the second coupling step 14 are alternately coupled to each other.

And the end of the plurality of wing panel portion 180 including the composite material is inserted into the mounting groove 154 provided in the mounting bracket portion 150. The fixing bolt 190 passes through the bracket body 152 and then passes through the outer shell member 184 of the wing panel 180, and then passes through the inner bracket 186. Therefore, the wing panel 180 and the mounting bracket 150 are fixed to each other.

On the other hand, in the state in which the rotating bracket portion 140 is located on the upper side of the core portion 130, the edge of the core body 142 facing the core portion 130 and the edge of the welding hole portion 143 is fixed by welding.

Then, after the moving body portion 172 is inserted into the sliding groove 160, the moving restraint bolt 177 penetrates the fixing bracket 148 to the moving body portion 172, so that the mounting bracket portion 150 is provided. Is rotatably connected to the rotating bracket portion 140.

Therefore, when opening and closing the wing panel unit 180 in the commercial vehicle loading box 100, by operating a cylinder provided separately to rotate the wing panel unit 180 to open and close the wing panel unit 180. In this case, the wing panel 180 is rotated together with the mounting bracket 150.

As described above, according to the present invention, because the composite box and the aluminum manufacturing box (1) for the commercial vehicle is manufactured, the weight is reduced compared to the prior art, and deformation and assembly failure due to welding can be reduced. In addition, since the assembly of the wing panel unit 180 including the composite material is made quickly and easily, time and cost required for installation of the wing panel unit 180 may be reduced.

Although the present invention has been described with reference to the embodiments illustrated in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible. will be. Therefore, the true technical protection scope of the present invention will be defined by the claims below.

1: loading box for commercial vehicles
10: bottom portion 12: first coupling step 14: second coupling step
15: anterior support 17: posterior support
20: frame part
30: side rail portion 32: first support piece 34: second support piece 36: side rail body
40: first support portion 41: support member 42: connection member 43: first support body 45: guide groove 46: guide protrusion 47: locking projection
50: second support portion 52: second support body 54: wing member
60: first fastening portion 62: first core portion 63: first core body 64: first upper groove portion 65: first lower groove portion 67: first fastening bolt
70: second fastening portion 72: second core portion 74: second fastening bolt
130: core part
140: rotating bracket 142: core body 143: welding hole 144: seating projection 146: shaft member 148: fixed bracket
150: mounting bracket portion 152: bracket body 154: mounting groove 156: fixed fastening portion
160: sliding groove 162: guide protrusion 164: locking projection
170: connection fastening portion 172: moving body portion 173: fastening body 174: guide groove 175: locking groove 177: moving restraint bolt
180: wing panel portion 182: core panel member 184: outer shell member 186: inner bracket 188: panel connection portion
190: fixing bolt
W: Width direction D: Length direction

Claims (3)

A bottom portion in which a plurality of materials are mixed to form a flat plate shape;
A frame part supporting the bottom part and shaped into a lattice-shaped structure;
A front support part and a rear support part installed on both sides of the bottom part; And
And a core part extending in the longitudinal direction of the bottom part to connect an upper side of the front support part and the rear support part.
The frame part may include side rail parts positioned on both sides of the bottom part and extending in a length direction of the bottom part;
A first support part installed in the width direction of the bottom part and both sides of which are inserted into and fixed to the side rail part; And
It is installed in the longitudinal direction of the bottom portion, the second support portion for supporting the lower side of the first support portion; loading for commercial vehicles comprising a.
The method of claim 1, wherein the side rail portion,
A first support piece supporting a lower side of the first support part and extending in a horizontal direction;
A second support piece facing the first support piece and covering an upper side of the first support part; And
And a side rail body connecting the first support piece and the second support piece to face an end portion of the first support part.
The method of claim 2,
The side rail portion and the first support portion is fixed by the first fastening portion, the first support portion and the second support portion is a commercial vehicle, characterized in that the fixed by the second fastening portion.

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