Folding door for vehicle

Abstract

A folding door of a vehicle is disclosed. The folding door of the vehicle is a folding door of a bus vehicle comprising a front door and a rear door, comprising a front door including a front frame having one side rotatably connected to a vehicle body and a first hinge connection protruding from the other side edge, and a front window installed on the front frame; a rear door including a rear frame having a roller part installed on one side that rotatably contacts a rail installed on the vehicle body and a second hinge connection protruding from the other side edge connected to the first hinge connection, and a rear window installed on the rear frame; and a connecting part rotatably connecting the first hinge connection and the second hinge connection to each other.

Description

Technology Field

[0001] The present invention relates to a folding door for a vehicle that achieves an aesthetic appearance, improves workability and quality issues, and offers lightweighting and enhanced safety. Background Technology

[0002] Generally, bus folding doors are operated by automatically rotating via pneumatic cylinders or electric controllers.

[0003] When the door is opened, the door folds and rotates into the interior of the vehicle using a center hinge, and a roller bearing is applied to the top of the rear door to perform a reciprocating rolling motion along the rail of the vehicle body, serving as a door opening and closing guide.

[0004] The gaps between these doors and between the door and the body are sealed to prevent noise, leakage, and the ingress of outside air.

[0005] However, conventional bus folding doors have three door hinges, hinge handles, and MTG bolts exposed to the outside, and two weatherstrip-fixed door glass and rubber stop bumpers exposed to the outside, which makes it difficult to achieve the aesthetic appearance of eco-friendly vehicles.

[0006] In addition, conventional folding doors have an excessive number of assembly parts, which makes it difficult to improve workability and quality. The problem to be solved

[0007] One embodiment of the present invention aims to provide a folding door for a vehicle that achieves an aesthetic appearance, improves workability and quality issues, and offers lightweighting and enhanced safety. means of solving the problem

[0008] One embodiment of the present invention is a folding door of a bus vehicle comprising a front door and a rear door, comprising a front door including a front frame having one side rotatably connected to a vehicle body and a first hinge connection protruding from the other side edge, and a front window installed on the front frame; a rear door including a rear frame having a roller part installed on one side that rotatably contacts a rail installed on the vehicle body and a second hinge connection protruding from the other side edge connected to the first hinge connection, and a rear window installed on the rear frame; and a connecting part rotatably connecting the first hinge connection and the second hinge connection to each other.

[0009] The first hinge connection is protruded as a pair spaced apart from each other on the other edge of the front frame, and the second hinge connection is protruded from the rear frame and can be inserted at a position between the pair of first hinge connections.

[0010] The front frame and the first hinge connection can be integrally extruded from aluminum, and the rear frame and the second hinge connection can be integrally extruded from aluminum.

[0011] It may further include rigid brackets installed at the respective corners of the front frame and the rear frame.

[0012] The rigid bracket may include a first bracket installed in a first direction inside the corner portion, a second bracket installed in a second direction inside the corner portion, and a fastening member that fixes the first bracket and the second bracket.

[0013] The roller section may include a roller bracket installed on the upper part of the rear frame with a bracket protrusion on one side, a roller shaft including a roller connecting shaft inserted into the bracket protrusion and fixed with a nut member, and a roller eccentric shaft connected in a bent state to the upper end of the roller connecting shaft, and a rotating roller rotatably installed on the roller eccentric shaft.

[0014] It may further include a stopper part installed at the lower part of the rear frame.

[0015] The stopper portion may include a stopper bracket installed on the lower part of the rear frame and having a stopper protrusion protruding from one side, a stopper connecting shaft inserted and fixed to the stopper protrusion, and a stopper shaft including an eccentric stopper connected in a bent state to the lower end of the stopper connecting shaft.

[0016] It may further include a front door sealing portion that seals the space between the edge of the front window and the front frame, a rear door sealing portion that seals the space between the edge of the rear window and the rear frame, and a center sealing portion installed at a position between the front frame and the rear frame.

[0017] The front door sealing portion may include a front door sealing lip that is fitted and fixed to the side of the front frame, and a front window sealing protrusion that protrudes from the side of the front door sealing lip and covers the edge of the front window.

[0018] The rear door sealing portion may include a rear door sealing lip that is fitted and fixed to the side of the rear frame, and a rear window sealing protrusion that protrudes from the side of the rear door sealing lip and covers the edge of the front window.

[0019] The center sealing portion may include a center sealing lip that is fitted and fixed between the front frame and the rear frame, a first sealing lip that seals the space between the edge of the front window and the front frame at the position of the center sealing lip, and a second sealing lip that seals the space between the edge of the rear window and the rear frame at the position of the center sealing lip.

[0020] It may include a first door wed that is installed between the front door sealing lip and the front pillar of the vehicle and is formed by an aluminum mold, and a second door wed that is installed between the rear door sealing lip and the rear pillar of the vehicle and is formed by an aluminum mold.

[0021] It may additionally include a door handle installed on the front window.

[0022] The door handle may include a handle bracket installed through the front window, a handle frame fixed to the handle bracket by a fastening member and protruding toward the front of the front window, and a sealing pad that seals the space between the handle bracket and the front window.

[0023] It may further include a door bumper installed on a rail at the rotation axis position of the front door.

[0024] The door bumper may include a bumper bracket that protrudes on a rail at the rotation axis position of the front door and is installed by a pivot hinge, and an elastic bumper installed at the end of the bumper bracket. Effects of the invention

[0025] According to one embodiment of the present invention, it is possible to realize a beautiful exterior of a folding door that matches the image of an eco-friendly vehicle when applied to a bus vehicle.

[0026] According to one embodiment of the present invention, it is possible to secure interior opening and downward visibility of a vehicle, thereby improving stability around the door and improving sealing performance, which in turn improves the marketability of the vehicle.

[0027] According to one embodiment of the present invention, it is possible to implement a folding door that improves the aesthetics of the folding door to match the image of an eco-friendly vehicle, improves workability and quality issues compared to conventional mass-produced parts, and offers lightweighting and enhanced safety. Brief explanation of the drawing

[0028] FIG. 1 is a side view schematically illustrating the connected state of the front door and the rear door of a vehicle folding door according to one embodiment of the present invention. FIG. 2 is a schematic diagram illustrating the first hinge connection of the front frame and the second hinge connection of the rear frame of FIG. 1. FIG. 3 is a schematic diagram illustrating the state in which the first hinge connection part and the second hinge connection part of FIG. 2 are connected by a connecting pin and a bushing member. FIG. 4 is a schematic perspective view of a key part showing the state in which a rigid bracket is installed according to one embodiment of the present invention. FIG. 5 is a schematic perspective view illustrating the state in which a roller part according to one embodiment of the present invention is installed on the upper side of a rear frame. FIG. 6 is a schematic perspective view illustrating the roller shaft of FIG. 5. FIG. 7 is a schematic perspective view illustrating the state in which a stopper part is installed on the lower part of a rear frame according to one embodiment of the present invention. FIG. 8 is a schematic perspective view illustrating the state in which an eccentric shaft is formed on the stopper connecting shaft of FIG. 7. FIG. 9 is a schematic diagram illustrating the state in which a front door sealing part, a rear door sealing part, and a center sealing part are installed according to an embodiment of the present invention. FIG. 10 is a cross-sectional view schematically illustrating the state in which the front door sealing part, rear door sealing part, and center sealing part are installed, cut along the line A??A of FIG. 9. FIG. 11 is a cross-sectional view schematically illustrating the state in which a first door wedge and a second door wedge are installed according to an embodiment of the present invention. FIG. 12 is a schematic perspective view illustrating the state in which a door handle according to one embodiment of the present invention is installed on a front window. FIG. 13 is a cross-sectional view schematically illustrating the state in which the door handle of FIG. 12 is installed. FIG. 14 is a schematic diagram illustrating the state in which a door bumper is installed according to one embodiment of the present invention. Specific details for implementing the invention

[0029] Hereinafter, embodiments of the present invention are described in detail with reference to the attached drawings so that those skilled in the art can easily implement the invention. However, the present invention may be embodied in various different forms and is not limited to the embodiments described herein. In the drawings, parts unrelated to the explanation have been omitted to clearly explain the present invention, and the same reference numerals have been used throughout the specification for identical or similar components.

[0030] FIG. 1 is a side view schematically illustrating the connected state of the front door and the rear door of a vehicle folding door according to one embodiment of the present invention, FIG. 2 is a detailed drawing schematically illustrating the first hinge connection part of the front frame and the second hinge connection part of the rear frame of FIG. 1, and FIG. 3 is a detailed drawing schematically illustrating the state in which the first hinge connection part and the second hinge connection part of FIG. 2 are connected by a connecting pin and a bushing member.

[0031] As illustrated in FIGS. 1 to 3, a folding door (100) of a vehicle according to one embodiment of the present invention is a folding door of a bus vehicle comprising a front door (10) and a rear door (20), comprising a front frame (11) having one side rotatably connected to a vehicle body and a first hinge connecting part (12) protruding from the other side edge, and a front window (13) installed on the front frame (11); a rear door (20) having a rear frame (21) having a roller part (50) installed on one side that rotatably contacts a rail (2) installed on the vehicle body and a second hinge connecting part (22) connected to the first hinge connecting part (12) protruding from the other side edge, and a rear window (23) installed on the rear frame (21); and a connecting part (30) that rotatably connects the first hinge connecting part (12) and the second hinge connecting part (22) to each other.

[0032] The front door (10) and the rear door (20) can be installed so as to be foldable with their sides hinged to each other. This will be explained in detail below.

[0033] The front door (10) may include a front frame (11) having one side rotatably connected to the vehicle body and a first hinge connection part (12) protruding from the other edge, and a front window (13) installed on the front frame (11).

[0034] The front frame (11) and the first hinge connection (12) can be formed by aluminum extrusion. The front frame (11) can be formed by aluminum compression extrusion and installed through machining operations and argon welding and finishing operations at each corner.

[0035] The front frame (11) can be installed with the front window (13) sealed by the front door sealing part (70). This will be explained in detail below.

[0036] A first hinge connection part (12) that is hinge-connected to the rear frame (21) may protrude from one side of the front frame (11).

[0037] The first hinge connection (12) may protrude as a pair spaced apart from each other on one edge of the front frame (11).

[0038] Meanwhile, the rear door (20) may include a rear frame (21) having a roller part (50) installed on one side that rotates in contact with a rail (2) installed on the vehicle body, and a second hinge connecting part (22) protruding from the other edge that is connected to a first hinge connecting part (12), and a rear window (23) installed on the rear frame (21).

[0039] The rear frame (21) and the second hinge connection (22) can be formed by aluminum extrusion. This rear frame (21) can be formed by aluminum compression extrusion and installed through machining operations and argon welding and finishing operations on each corner.

[0040] A second hinge connection part (22) that is hinge-connected to the front frame (11) may protrude from one side of the rear frame (21).

[0041] The second hinge connecting part (22) protrudes as a single unit on one side of the front frame (11) and can be inserted at a position between a pair of first hinge connecting parts (12).

[0042] These first hinge connecting part (12) and second hinge connecting part (22) can be connected by a connecting part (30) while connected to each other.

[0043] The connecting portion (30) may include a connecting pin (31) inserted through the first hinge connecting portion (12) and the second hinge connecting portion (22), and a bushing member (33) inserted into the connecting pin (31). Accordingly, the first hinge connecting portion (12) and the second hinge connecting portion (22) can be rotatably connected to each other in a hinged connection state.

[0044] Meanwhile, a rigid bracket (40) may be installed at each corner of the front frame (11) and the rear frame (21).

[0045] FIG. 4 is a schematic perspective view of a key part showing the state in which a rigid bracket is installed according to one embodiment of the present invention.

[0046] As illustrated in FIG. 4, the rigid bracket (40) may include a first bracket (41) installed in a first direction inside the corner portion, a second bracket (43) installed in a second direction inside the corner portion, and a fastening member (45) that fixes the first bracket (41) and the second bracket (43).

[0047] The first bracket (41) and the second bracket (43) can be installed in a state where they are extended in a long length in a first direction and a second direction, respectively, which are orthogonal to each other, inside the respective corner portions of the front frame (11) and the rear frame (21).

[0048] These first bracket (41) and second bracket (43) can be firmly fixed inside the corner portion by means of a fastening member (45).

[0049] The fastening member (45) can be applied as a plurality of bolt members that fix the first bracket (41) and the second bracket (43) inside the corner portion.

[0050] In this way, the rigid bracket (40) is installed inside the respective corner portions of the front frame (11) and the rear frame (21), thereby preventing twisting and improving the durability of the installed structure.

[0051] Meanwhile, the roller part (50) can be installed on the upper part of the rear frame (21) so that the folding operation is performed stably.

[0052] FIG. 5 is a schematic perspective view illustrating a state in which a roller part according to one embodiment of the present invention is installed on the upper side of a rear frame, and FIG. 6 is a schematic perspective view illustrating the roller shaft of FIG. 5.

[0053] With reference to FIGS. 5 and 6, the roller section (50) may include a roller bracket (51) installed on the upper part of the rear frame (21) and having a bracket protrusion (51a) protruding on one side, a roller shaft (53) including a roller connecting shaft (53a) inserted into the bracket protrusion (51a) and fixed with a nut member (52), and a roller eccentric shaft (53b) connected in a bent state to the upper end of the roller connecting shaft (53a), and a rotating roller (55) rotatably installed on the roller eccentric shaft (53b).

[0054] The roller bracket (51) is installed on the upper surface of the rear frame (21) by means of a fastening member such as a bolt member, and a bracket protrusion (51a) for installing a roller shaft (53) may protrude on one side.

[0055] The roller shaft (53) is installed on the upper part of the rear frame (21) by means of a bracket protrusion (51a) and is installed in a bent state to one side, so that the installation position of the rotating roller (55) can be varied according to a certain angle of rotation.

[0056] More specifically, the roller shaft (53) may include a roller connecting shaft (53a) that is inserted into a bracket protrusion (51a) and fixed with a nut member (52), and a roller eccentric shaft (53b) that is connected in a bent state to the upper end of the roller connecting shaft (53a).

[0057] The roller connecting shaft (53a) is installed in a state where it penetrates the bracket protrusion (51a) and can be fixed by a nut member (52) while inserted into the bracket protrusion (51a). The rotation angle of the roller connecting shaft (53a) can be adjusted by releasing the nut member (52). In this way, the rotation angle of the roller connecting shaft (53a) can be adjusted, thereby allowing the position of the rotating roller (55), which will be described later, to be adjusted.

[0058] A roller eccentric shaft (53b) bent to one side can be installed on such a roller connecting shaft (53a).

[0059] The roller eccentric shaft (53b) is installed on the upper part of the roller connecting shaft (53a) in a bent state to one side, and can be formed to be bent so as to be eccentric in one direction relative to the roller connecting shaft (53a). A rotating roller (55) can be rotatably installed at the end of this roller eccentric shaft (53b).

[0060] The rotating roller (55) is rotatably installed at the end of the roller eccentric shaft (53b) so as to be installed to make rotational contact with the rail (2) during the folding operation of the door, thereby enabling stable folding operation.

[0061] Meanwhile, a stopper part (60) may be installed on the rear frame (21) to enable the door to be operated in the correct position during the folding operation of the door.

[0062] FIG. 7 is a schematic perspective view illustrating a state in which a stopper part is installed on the lower part of a rear frame according to one embodiment of the present invention, and FIG. 8 is a schematic perspective view illustrating a state in which an eccentric shaft is formed on the stopper connecting shaft of FIG. 7.

[0063] As illustrated in FIGS. 7 and 8, the stopper part (60) may include a stopper bracket (61) installed on the lower part of the rear frame (21) and having a stopper protrusion (61a) protruding on one side, a stopper connecting shaft (63) inserted and fixed to the stopper protrusion (61a), and an eccentric stopper (65) connected in a bent state to the lower end of the stopper connecting shaft (63).

[0064] The stopper bracket (61) is installed on the lower surface of the rear frame (21) by means of a fastening member such as a bolt member, and a stopper protrusion (61a) for fixing the stopper connecting shaft (63) may protrude on one side.

[0065] The stopper connecting shaft (63) can be fixed in an installed state by a fastening force such as a nut member while inserted into the stopper protrusion (61a). An eccentric stopper (65) may be installed on this stopper connecting shaft (63).

[0066] The eccentric stopper (65) is formed in a unidirectional bent state on the stopper connecting shaft (63), and the installed position can be adjusted by adjusting the installed angle of the stopper connecting shaft (63). Accordingly, the eccentric stopper (65) is installed in an appropriate position according to the folding operation of the door, so it can be installed to enable stable door folding operation.

[0067] FIG. 9 is a schematic diagram illustrating the state in which a front door sealing part, a rear door sealing part, and a center sealing part are installed according to one embodiment of the present invention, and FIG. 10 is a cross-sectional view schematically illustrating the state in which a front door sealing part, a rear door sealing part, and a center sealing part are installed by cutting along line A-A of FIG. 9.

[0068] As illustrated in FIGS. 9 and 10, the front door (10) and rear door (20) of the present embodiment may be equipped with a front door sealing part (70), a rear door sealing part (80), and a center sealing part (90) for sealing.

[0069] The front door sealing portion (70) can be installed to seal the space between the edge of the front window (13) and the front frame (11).

[0070] More specifically, the front door sealing portion (70) may include a front door sealing lip (71) that is fitted and fixed to the side of the front frame (11), and a front window sealing protrusion (73) that protrudes from the side of the front door sealing lip (71) and covers the edge of the front window (13).

[0071] The front door sealing lip (71) is fitted and fixed along the longitudinal direction of the edge of the front frame (11), so as to prevent the entry of foreign matter. The front door sealing lip (71) is formed of a rubber material for stable sealing action, and a front window sealing protrusion (73) may be integrally protruded on one side.

[0072] As described above, the front window sealing protrusion (73) is formed integrally on the side of the front door sealing lip (71) and can be formed to protrude to cover a part of the edge of the front window (13).

[0073] In this way, the front door sealing lip (71) and the front window sealing protrusion (73) are formed to enable double sealing, and through the double sealing action, stable sealing is possible and a beautiful sealing of the entire edge of the front door is possible, thereby enabling the realization of a beautiful appearance.

[0074] Meanwhile, the rear door sealing portion (80) can be installed to seal the space between the edge of the rear window (23) and the rear frame (21).

[0075] More specifically, the rear door sealing portion (80) may include a rear door sealing lip (81) that is fitted and fixed to the side of the rear frame (21), and a rear window sealing protrusion (83) that protrudes from the side of the rear door sealing lip (81) and covers the edge of the front window (13).

[0076] The rear door sealing lip (81) is fitted and fixed along the longitudinal direction of the edge of the rear frame (21), so as not to cause foreign matter to enter. The rear door sealing lip (81) is formed of a rubber material for stable sealing action, and a rear window sealing protrusion (83) may be integrally protruded on one side.

[0077] As described above, the rear window sealing protrusion (83) is formed integrally on the side of the rear door sealing lip (81) and can be formed to protrude to cover a part of the edge of the rear window (23).

[0078] In this way, the rear door sealing lip (81) and the rear window sealing protrusion (83) are formed to enable double sealing, and through the double sealing action, stable sealing is possible and a beautiful sealing of the entire edge of the rear door is possible, thereby enabling the realization of a beautiful appearance.

[0079] Meanwhile, a center sealing portion (90) may be installed between the front door (10) and the rear door (20).

[0080] More specifically, the center sealing portion (90) may include a center sealing lip (91) that is fitted and fixed between the front frame (11) and the rear frame (21), a first sealing lip (93) that seals between the edge of the front window (13) and the front frame (11) at the position of the center sealing lip (91), and a second sealing lip (95) that seals between the edge of the rear window (23) and the rear frame (21) at the position of the center sealing lip (91).

[0081] The center sealing lip (91) is positioned between the front frame (11) and the rear frame (21), and one side can be fitted and fixed to the front frame (11) and the other side can be fitted and fixed to the rear frame (21).

[0082] The first sealing lip (93) can be installed to seal the space between the edge of the front window (13) and the front frame (11) at the position of the center sealing lip (91).

[0083] And, the second sealing lip (95) can be installed to seal the space between the edge of the rear window (23) and the rear frame (21) at the position of the center sealing lip (91).

[0084] These first sealing lip (93) and second sealing lip (95) can be installed to seal the position between the front window (13) and the rear window (23) while spaced apart from the center sealing lip (91).

[0085] In this way, the center sealing part (90) can stably seal the position between the front door (10) and the rear door (20) and can be fixed by fitting so that a beautiful appearance can be achieved.

[0086] FIG. 11 is a cross-sectional view schematically illustrating the state in which a first door wedge and a second door wedge are installed according to an embodiment of the present invention.

[0087] As shown in FIG. 11, a first door wed (110) formed of aluminum mold can be installed between the front door sealing lip (71) and the front pillar (1) of the vehicle.

[0088] The first door weja (110) is installed in aluminum material between the front door sealing lip (71) and the front pillar (1) of the vehicle, thereby improving sealing performance, preventing wear on the vehicle body, and increasing the sealing area and friction force, so that the movement of the door can be effectively suppressed.

[0089] In addition, a second door wed (120) formed from an aluminum mold can be installed between the rear door sealing lip (81) and the rear pillar (3) of the vehicle.

[0090] The second door weja (120) is installed in aluminum material between the rear door sealing lip (81) and the rear pillar (3) of the vehicle, thereby improving sealing performance, preventing wear on the vehicle body, and increasing the sealing area and friction force, so that the movement of the door can be effectively suppressed.

[0091] Meanwhile, a door handle (130) may be installed on the front window (13).

[0092] FIG. 12 is a schematic perspective view illustrating a state in which a door handle according to one embodiment of the present invention is installed on a front window, and FIG. 13 is a schematic cross-sectional view illustrating the state in which the door handle of FIG. 12 is installed.

[0093] As illustrated in FIGS. 12 and 13, the door handle (130) may include a handle bracket (131) installed through the front window (13), a handle frame (133) fixed to the handle bracket (131) by a fastening member (45) and protruding toward the front of the front window (13), and a sealing pad (134) sealing the space between the handle bracket (131) and the front window (13).

[0094] A handle bracket (131) can be installed so as to be inserted into a through hole formed in the front window (13) and protrude toward the front of the front door (10). A handle frame (133) can be installed on this handle bracket (131) so that a user can grip it with their hand.

[0095] The handle frame (133) is fixed to the handle bracket (131) by a fastening member (45), such as a screw member, and is installed in a state protruding toward the front of the front window (13), so that manual operation of folding the door can be stably grasped by the user's hand.

[0096] Meanwhile, a door bumper (140) may be installed on a rail (2) located near the rotation axis of the front door (10).

[0097] FIG. 14 is a schematic diagram illustrating the state in which a door bumper is installed according to one embodiment of the present invention.

[0098] As illustrated in FIG. 14, the door bumper (140) may include a bumper bracket (142) that protrudes on a rail (2) located near the axis of rotation of the front door (10) and is installed by a pivot hinge (141), and an elastic bumper (143) installed at the end of the bumper bracket (142).

[0099] In this way, the door bumper (140) is installed in a protruding position on the upper rail (2) of the front door (10), so that when the door is opened, contact with the rotating roller (55) installed on the rear door (20) is possible, allowing for stable door opening stop operation.

[0100] As described above, the folding door (100) of the vehicle in this embodiment is applied to a bus vehicle, and it is possible to realize a beautiful appearance of the folding door that matches the image of an eco-friendly vehicle.

[0101] In addition, it is possible to secure interior visibility and downward visibility, which improves stability around the doors and enhances sealing performance, thereby improving the vehicle's marketability.

[0102] In addition, it is possible to realize folding doors that improve the aesthetics to match the image of eco-friendly vehicles, address workability and quality issues compared to conventional mass-produced parts, and offer lightweight and enhanced safety.

[0103] Although preferred embodiments of the present invention have been described above, the present invention is not limited thereto and can be implemented with various modifications within the scope of the claims, the detailed description of the invention, and the attached drawings, and it is obvious that such modifications also fall within the scope of the present invention. Explanation of the symbols

[0104] 10...Front door 11...Front frame 12...1st hinge connection 13...Front window 20...Rear door 21...Rear frame 22...Second hinge connection 23...Rear window 30...Connector 31...Connector pin 33...Bush missing 40...Rigid bracket 41...1st bracket 43...2nd bracket 45...fastening member 50...roller part 51...Roller bracket 53...Roller shaft 53a..Roller connecting shaft 53b..Roller eccentric shaft 60...Stopper part 61...Stopper bracket 63...Stopper connecting shaft 70...Front door sealing part 71...Front door sealing lip 73...Front window sealing protrusion 80...Rear door sealing part 81...Rear door sealing lip 83...Rear window sealing protrusion 90...Center sealing part 91...Center sealing lip 93...1st sealing lip 95...2nd sealing lip 110..1st door wezza 120...2nd door wezza 130...door handle 131...Handle bracket 133...Handle frame 134...Sealing pad 140...Door bumper 141...Pivot hinge 142...Bumper bracket 143...Elastic bumper

Claims

Claim 1 A folding door for a bus vehicle comprising a front door and a rear door, the front door comprising a front frame having one side rotatably connected to a vehicle body and a first hinge connection protruding from the other edge, and a front window installed on the front frame; a rear door comprising a rear frame having a roller part installed on one side that rotatably contacts a rail installed on the vehicle body and a second hinge connection protruding from the other edge connected to the first hinge connection, and a rear window installed on the rear frame; and a connecting part rotatably connecting the first hinge connection and the second hinge connection to each other; wherein the front frame and the first hinge connection are integrally extruded from aluminum, and the rear frame and the second hinge connection are integrally extruded from aluminum. Claim 2 A folding door of a vehicle according to claim 1, wherein the first hinge connecting portion protrudes as a pair spaced apart from each other on the other edge of the front frame, and the second hinge connecting portion protrudes from the rear frame and is inserted at a position between the pair of first hinge connecting portions. Claim 3 delete Claim 4 A folding door of a vehicle according to claim 1, further comprising a rigid bracket installed at each corner of the front frame and the rear frame. Claim 5 A folding door of a vehicle, wherein, in paragraph 4, the rigid bracket comprises: a first bracket installed in a first direction inside the corner portion; a second bracket installed in a second direction inside the corner portion; and a fastening member for fixing the first bracket and the second bracket. Claim 6 A folding door of a vehicle, wherein the roller portion comprises: a roller bracket installed on the upper part of the rear frame and having a bracket protrusion protruding on one side; a roller shaft including a roller connecting shaft inserted into the bracket protrusion and fixed by a nut member, and a roller eccentric shaft connected in a bent state to the upper end of the roller connecting shaft; and a rotating roller rotatably installed on the roller eccentric shaft. Claim 7 A folding door for a bus vehicle comprising a front door and a rear door, the front door comprising a front frame having one side rotatably connected to a vehicle body and a first hinge connection protruding from the other edge, and a front window installed on the front frame; a rear door comprising a rear frame having one side rotatably contacting a rail installed on the vehicle body and a second hinge connection protruding from the other edge connected to the first hinge connection, and a rear window installed on the rear frame; a connecting part rotatably connecting the first hinge connection and the second hinge connection to each other; and a stopper part installed on the lower part of the rear frame; wherein the stopper part comprises a stopper bracket installed on the lower part of the rear frame and having a stopper protrusion protruding from one side, a stopper connecting shaft inserted and fixed to the stopper protrusion, and a stopper shaft having an eccentric stopper connected in a bent state to the lower end of the stopper connecting shaft. Claim 8 A folding door of a bus vehicle comprising a front door and a rear door, comprising: a front door including a front frame having one side rotatably connected to a vehicle body and a first hinge connection protruding from the other side edge, and a front window installed on the front frame; a rear door including a rear frame having a roller part installed on one side that rotatably contacts a rail installed on the vehicle body and a second hinge connection part connected to the first hinge connection protruding from the other side edge, and a rear window installed on the rear frame; a connecting part rotatably connecting the first hinge connection part and the second hinge connection part to each other; a front door sealing part sealing the space between the edge of the front window and the front frame; a rear door sealing part sealing the space between the edge of the rear window and the rear frame; and a center sealing part installed at a position between the front frame and the rear frame. Claim 9 A folding door of a vehicle according to claim 8, wherein the front door sealing portion comprises: a front door sealing lip that is fitted and fixed to the side of the front frame; and a front window sealing protrusion that protrudes from the side of the front door sealing lip and covers the edge of the front window. Claim 10 A folding door of a vehicle according to claim 8, wherein the rear door sealing portion comprises: a rear door sealing lip fitted and fixed to the side of the rear frame; and a rear window sealing protrusion protruding from the side of the rear door sealing lip and covering the edge of the front window. Claim 11 A folding door of a vehicle, wherein the center sealing portion comprises: a center sealing lip fitted and fixed between the front frame and the rear frame; a first sealing lip sealing between the edge of the front window and the front frame at the position of the center sealing lip; and a second sealing lip sealing between the edge of the rear window and the rear frame at the position of the center sealing lip. Claim 12 A folding door of a vehicle, further comprising: a first door wedger installed between the front door sealing lip and the front pillar of the vehicle and formed by an aluminum mold; and a second door wedger installed between the rear door sealing lip and the rear pillar of the vehicle and formed by an aluminum mold. Claim 13 A folding door for a bus vehicle comprising a front door and a rear door, the front door comprising a front frame having one side rotatably connected to a vehicle body and a first hinge connection protruding from the other side edge, and a front window installed on the front frame; a rear door comprising a rear frame having one side rotatably contacting a rail installed on the vehicle body and a second hinge connection protruding from the other side edge connected to the first hinge connection, and a rear window installed on the rear frame; a connecting part rotatably connecting the first hinge connection and the second hinge connection to each other; and a door handle installed on the front window; wherein the door handle comprises a handle bracket installed through the front window, a handle frame fixed to the handle bracket by a fastening member and protruding toward the front of the front window, and a sealing pad sealing the space between the handle bracket and the front window. Claim 14 A folding door for a bus vehicle comprising a front door and a rear door, the front door comprising a front frame having one side rotatably connected to a vehicle body and a first hinge connection protruding from the other edge, and a front window installed on the front frame; a rear door comprising a rear frame having one side rotatably contacting a rail installed on the vehicle body and a second hinge connection protruding from the other edge connected to the first hinge connection, and a rear window installed on the rear frame; a connecting part rotatably connecting the first hinge connection and the second hinge connection to each other; and a door bumper installed on a rail at the rotation axis position of the front door; wherein the door bumper comprises a bumper bracket protruding from the rail at the rotation axis position of the front door and installed by a pivot hinge, and an elastic bumper installed at the end of the bumper bracket.

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