Swing-in type door sturcture of vehicle

Abstract

A swing-in type door structure for a vehicle according to one embodiment of the present invention comprises a door arranged parallel to both sides of an entrance of the vehicle and a door arm mounted on one side of the door to open and close the door by rotation, wherein the swing-in type door structure comprises: a center door bracket having one end fixed to an upper center surface of the door and extending in a direction perpendicular to the door; a roller bracket having one end connected to the other end of the center door bracket in a direction perpendicular to the center door bracket; and a roller mounted to the other end of the roller bracket and connected to rotate while in contact with a rail formed on the vehicle body above the door.

Description

Technology Field

[0001] The present invention relates to a swing-in type door structure of a vehicle, and more specifically, to a swing-in type door structure of a vehicle that facilitates the adjustment of the step difference of the swing-in type door. Background Technology

[0002] Generally, double swing-in type doors, which are applied to vehicles such as low-floor buses, have the advantage of creating a wider entrance compared to conventional folding doors because the door attached to the entrance rotates inward to open and close. In addition, they are widely adopted in global city buses due to their simple structure, excellent durability, and advantageous price compared to other door types.

[0003] Referring to FIGS. 1 and 2, a vehicle equipped with a conventional double swing door is provided with doors (2, 4) arranged parallel to each other on both sides of the vehicle's entrance, and a door arm (6) is mounted on one side of the door (2), and an opening / closing device is provided such that the door (2) is opened and closed by rotating the door arm (6). A door arm and an opening / closing device are provided on the right side in the same manner as the door (2).

[0004] The opening and closing mechanism of the swing-in door opens and closes the door (2) by means of an air cylinder (8) that is operated by an electric switch. At this time, the linear motion caused by the driving force of the air cylinder (8) is converted into the rotational motion of the door arm (6), thereby opening and closing the door (2). A connecting rod (10) is arranged to move linearly in the air cylinder (8), and as the connecting rod (10) moves linearly by the driving force of the air cylinder (8), the door arm (6) rotates and the door (2) opens and closes. At this time, a guide arm (12) connected between the door arm (6) and the top of the door (2) is configured to slide at the top of the door (2), thereby enabling rotation of the door (2). Additionally, a roller (14) and a bracket (16) are provided at the top of the door (2), and the roller is in contact with the door body to rotate, so that as the door (2) rotates, the roller rotates along the door body, thereby opening and closing the door.

[0005] However, during the assembly process of the swing-in door opening and closing mechanism, a gap may occur between the door body and the top of the door, and the interlocking between the two doors (2, 4) may be misaligned. Additionally, the sealing in the width direction between the doors (2, 4) and the door (2, 4) bodies may not be completely achieved.

[0006] Due to the gap between these doors, dust and outside air can enter the vehicle interior, causing noise such as wind noise and resulting in poor aesthetics, which leads to quality issues with the vehicle. The problem to be solved

[0007] Accordingly, the present invention aims to solve the above-mentioned problems, and the objective of the present invention is to provide a swing-in type door structure for a vehicle that absorbs assembly variation and can finely adjust the step difference of the vehicle door. means of solving the problem

[0008] A swing-in type door structure for a vehicle according to one embodiment of the present invention comprises a door arranged parallel to both sides of an entrance of the vehicle and a door arm mounted on one side of the door to open and close the door by rotation, wherein the swing-in type door structure comprises: a center door bracket having one end fixed to an upper center surface of the door and extending in a direction perpendicular to the door; a roller bracket having one end connected to the other end of the center door bracket in a direction perpendicular to the center door bracket; and a roller mounted to the other end of the roller bracket and connected to rotate while in contact with a rail formed on the vehicle body above the door.

[0009] The roller bracket comprises a first roller bracket coupled to the center door bracket and a second roller bracket formed integrally extending from the first roller bracket and coupled to the roller, and the horizontal radius of the vehicle of the first roller bracket may be formed to be larger than the horizontal radius of the vehicle of the second roller bracket.

[0010] The central axis of the first roller bracket may be eccentric with respect to the central axis of the second roller bracket.

[0011] The center axis of the first roller bracket may be eccentrically spaced from the center axis of the second roller bracket by a distance of 4 mm to 6 mm.

[0012] One end of the first roller bracket can be fixed to the other end of the center door bracket by a center door bracket fixing bolt.

[0013] A swing-in type door structure of a vehicle according to one embodiment of the present invention may further include an upper door bracket, one end of which is fixed to an upper surface of the door between the door arm and the center door bracket and extends in a direction perpendicular to the door; a shaft pin mounted in a direction perpendicular to the upper door bracket so as to penetrate the upper door bracket; and an upper guide arm, one end of which is rotatably coupled to one end of the shaft pin and the other end of which is fixed to the door arm and extends in a direction horizontal to the door.

[0014] One end of the upper door bracket can be fixed to the upper surface of the door by an upper door bracket fixing bolt.

[0015] The shaft pin penetrates the upper door bracket opening formed in the upper door bracket, and the upper door bracket can be fixedly mounted by nuts on both sides of the upper door bracket opening.

[0016] At one end of the upper guide arm, an upper guide arm opening into which the shaft pin is inserted is formed, and the upper guide arm opening may be provided with a ball joint that rotates within the upper guide arm opening while being fixed to one end of the shaft pin.

[0017] A stopper may be formed at one end of the shaft pin to act as a catch on the entrance side of the upper guide arm opening into which the shaft pin is inserted.

[0018] One end of the shaft pin and one end of the upper guide arm can be joined by a shaft pin fixing bolt.

[0019] A swing-in type door structure of a vehicle according to one embodiment of the present invention may further include a lower door bracket, one end of which is fixed to the lower side of the door-side vehicle body and the other end of which is coupled to the lower end of the door arm, and a lower guide arm, one end of which is rotatably coupled to the lower end of the door arm and the other end of which is fixed to the lower surface of the door.

[0020] An upper elongated hole is formed at one end of the lower door bracket, and a lower door bracket fixing bolt is inserted into the upper elongated hole so that the lower door bracket can be fixed to the lower side of the door body.

[0021] One end of the lower guide arm is interposed and coupled between the other end of the lower door bracket and the lower end of the door arm, and a lower elongated hole is formed in the other end of the lower door bracket, and a lower guide arm fixing bolt is inserted through the lower elongated hole so that the lower door bracket and the lower guide arm can be bolted to the lower end of the door arm.

[0022] A fixing pin is penetrating and coupled to the other end of the lower guide arm, and the fixing pin can be rotatably inserted into a fixing pin insertion member provided on one lower surface of the door. Effects of the invention

[0023] According to an embodiment of the present invention, in a swing-in type door structure of a vehicle, the gap around the door is minimized by finely adjusting the step difference of the vehicle door, thereby preventing dust and the like from entering the vehicle interior and minimizing wind noise.

[0024] In addition, by adjusting bolts or nuts, the step difference in the vertical and vehicle width directions of the door can be easily adjusted, thereby realizing a watertight structure. Brief explanation of the drawing

[0025] Figure 1 is a drawing showing the swing-in type door structure applied to existing vehicles as viewed from inside the vehicle. FIG. 2 is a top view illustrating a swing-in type door structure applied to an existing vehicle, along with its operating trajectory. FIG. 3 is a drawing showing the center portion of a swing-in type door structure of a vehicle according to one embodiment of the present invention. FIG. 4 is a drawing showing the combined state of a center door bracket and a roller bracket of a swing-in type door structure of a vehicle according to one embodiment of the present invention. FIG. 5 is a cross-sectional view taken along line AA of FIG. 3, showing the operating state of the center portion of a swing-in type door structure of a vehicle according to one embodiment of the present invention. FIG. 6 is a drawing showing the upper part of a swing-in type door structure of a vehicle according to one embodiment of the present invention. FIG. 7 is a drawing showing the combined state of an upper door bracket and an upper guide arm of a swing-in type door structure of a vehicle according to one embodiment of the present invention. FIG. 8 is a cross-sectional view showing the upper part of a swing-in type door structure of a vehicle according to one embodiment of the present invention as viewed from the side. FIG. 9 is a cross-sectional view showing the upper part of a swing-in type door structure of a vehicle according to one embodiment of the present invention as viewed from inside the vehicle. FIG. 10 is a drawing showing the lower part of a swing-in type door structure of a vehicle according to one embodiment of the present invention. FIG. 11 is a drawing showing the combined state of a lower door bracket and a lower guide arm of a swing-in type door structure of a vehicle according to one embodiment of the present invention. Specific details for implementing the invention

[0026] Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings so that those skilled in the art can easily implement the present invention. The present invention may be embodied in various different forms and is not limited to the embodiments described herein.

[0027] In addition, in various embodiments, components having the same configuration are described using the same reference numerals, and in one representative embodiment, only configurations different from one embodiment are described.

[0028] It should be noted that the drawings are schematic and not drawn to scale. The relative dimensions and proportions of parts in the drawings are exaggerated or reduced in size for clarity and convenience in the drawings, and any dimensions are merely illustrative and not limiting. Additionally, the same reference numeral is used to denote similar features for the same structure, element, or part appearing in two or more drawings. Where one part is referred to as being "on" or "on" another part, it may be directly on top of the other part or may enclose other parts in between.

[0029] The embodiments of the present invention specifically illustrate one embodiment of the present invention. As a result, various variations of the illustration are expected. Accordingly, the embodiments are not limited to the specific form of the illustrated area and include, for example, variations in form resulting from manufacturing.

[0030] Hereinafter, with reference to the attached drawings, a swing-in type door structure of a vehicle according to an embodiment of the present invention will be described in detail.

[0031] FIG. 3 is a drawing showing the center portion of a swing-in type door structure of a vehicle according to one embodiment of the present invention.

[0032] Referring to FIG. 3, a swing-in type door structure of a vehicle according to one embodiment of the present invention is a swing-in type door structure having a door (2) arranged parallel to both sides of the entrance of the vehicle and a door arm (6) mounted on one side of the door (2) to open and close the door by rotation, and includes a center door bracket (20), a roller bracket (30), and a roller (40).

[0033] The center door bracket (20) is in the shape of a bent plate, with one end attached and fixed to the upper center surface of the door (2) and extending in a direction perpendicular to the door (2). That is, one end of the center door bracket (20) is fixed to the vehicle interior door (2) and extends toward the interior of the vehicle.

[0034] One end of a roller bracket (30) is connected to the other end of a center door bracket (20) that extends toward the interior of the vehicle, in a direction perpendicular to the center door bracket (20). The roller bracket (30) is formed to extend toward the upper part of the vehicle in a direction parallel to the door (2).

[0035] The roller (40) is mounted on the other end of the roller bracket (30) and can be coupled to the roller bracket (30) so as to rotate while in contact with the rail (3) formed on the vehicle body above the door (2). When the door (2) is opened or closed, the center door bracket (20) attached and fixed to the door (2) moves together with the door (2), and the roller bracket (30) and roller (40) coupled to the center door bracket (20) move. At this time, the roller (40) can rotate while in contact with the rail (3) formed on the vehicle body above the door (2).

[0036] FIG. 4 is a diagram showing the combined state of a center door bracket and a roller bracket of a swing-in type door structure of a vehicle according to one embodiment of the present invention, and FIG. 5 is a cross-sectional view taken along line AA of FIG. 3 showing the operating state of the center part of a swing-in type door structure of a vehicle according to one embodiment of the present invention.

[0037] Referring to FIG. 4, the roller bracket (30) includes a first roller bracket (32) and a second roller bracket (34). The first roller bracket (32) is connected to the other end of the center door bracket (20) by a center door bracket fixing bolt (25), and the second roller bracket (34) is formed by extending integrally with the first roller bracket (32) and is connected to the roller (40). The roller (40) can be rotatably connected to the outer surface of the second roller bracket (34).

[0038] The first roller bracket (32) and the second roller bracket (34) can be formed in a roughly cylindrical shape, and the horizontal radius of the vehicle of the first roller bracket (32) can be formed to be larger than the horizontal radius of the vehicle of the second roller bracket (34).

[0039] Additionally, referring to FIG. 5, the center axis (C1) of the first roller bracket (32) and the center axis (C2) of the second roller bracket (34) may be eccentric. The center axis (C1) of the first roller bracket (32) may be positioned in alignment with the other end of the center door bracket (20) and the axis to which the first roller bracket (32) is fixed by the center door bracket fixing bolt (25), and the center axis (C2) of the second roller bracket (34) may be positioned at a predetermined distance from the center axis (C1) of the first roller bracket (32). The center axis (C1) of the first roller bracket (32) and the center axis (C2) of the second roller bracket (34) may be eccentrically positioned at a distance of approximately 4 mm to approximately 6 mm.

[0040] Since the center axis (C1) of the first roller bracket (32) and the center axis (C2) of the second roller bracket (34) are eccentric, if the center axis (C1) of the first roller bracket (32) is positioned so that it is recessed toward the interior (indoor) side of the vehicle than the center axis (C2) of the second roller bracket (34) (a), the vehicle door (2) can be positioned closer to the interior side of the vehicle. Additionally, if the center axis (C1) of the first roller bracket (32) is positioned so that it is recessed toward the exterior (outdoor) side of the vehicle than the center axis (C2) of the second roller bracket (34) (b), the vehicle door (2) can be positioned closer to the exterior side of the vehicle.

[0041] The first roller bracket (32) can be connected to the other end of the center door bracket (20) by a center door bracket fixing bolt (25), and the roller bracket (30) can be rotated by loosening the center door bracket fixing bolt (25), and then the roller bracket (30) can be fixed by tightening the center door bracket fixing bolt (25) again, so that the position of the door (2) in the vehicle width direction can be adjusted by adjusting the amount of rotation of the roller bracket (30).

[0042] FIG. 6 is a drawing showing the upper part of a swing-in type door structure of a vehicle according to one embodiment of the present invention.

[0043] Referring to FIG. 6, a swing-in type door structure of a vehicle according to one embodiment of the present invention may further include an upper door bracket (50), a shaft pin (60), and an upper guide arm (70).

[0044] The upper door bracket (50) is fixed to the upper surface of the door (2) between the door arm (6) and the center door bracket (20) and may be in the form of a plate extending toward the interior of the vehicle in a direction perpendicular to the door (2). A shaft pin (60) is mounted in a direction perpendicular to the upper door bracket (50) so as to penetrate the upper door bracket (50).

[0045] Additionally, one end of the upper guide arm (70) is rotatably connected to the shaft pin (60), and the other end is fixed to the door arm (6), so that the upper guide arm (70) may be extended in a horizontal direction relative to the door (2).

[0046] The shaft pin (60) is inserted into the upper guide arm opening (72) formed at one end of the upper guide arm (70), so that one end of the upper guide arm (70) can rotate around the shaft pin (60). Additionally, the other end of the upper guide arm (70) can pivot in a direction horizontal to the door (2) together with the door arm (6) by the rotation of the door arm (6).

[0047] FIG. 7 is a drawing showing the combined state of an upper door bracket and an upper guide arm of a swing-in type door structure of a vehicle according to one embodiment of the present invention.

[0048] Referring to FIG. 7, one end of the upper door bracket (50) can be fixed to the upper surface of the door (2) by an upper door bracket fixing bolt (52). Additionally, a shaft pin (60) can be fixedly mounted to the upper door bracket (50) by passing through an upper door bracket opening (66) formed in the upper door bracket (50) and screwing it in with nuts (62) on both sides of the upper door bracket opening (66).

[0049] An upper guide arm opening (72) into which a shaft pin (60) is inserted is formed at one end of the upper guide arm (70), and a ball joint (74) that rotates within the upper guide arm opening (72) while being fixed to one end of the shaft pin (60) may be provided in the upper guide arm opening (72). Additionally, one end of the shaft pin (60) and one end of the upper guide arm (70) may be joined by a shaft pin fixing bolt (76) that passes through the upper guide arm opening (72).

[0050] Meanwhile, a catch (64) may be formed on one end of the shaft pin (60). When the upper guide arm (70) is coupled to one end of the shaft pin (60), the shaft pin (60) acts to catch on the entrance side of the upper guide arm opening (72) of the upper guide arm. Additionally, when the upper guide arm (70) rotates, it can be prevented from moving away toward the lower part of the shaft pin (60).

[0051] Additionally, a ring (78) is interposed between the ball joint (74) and the catch (64) to reduce friction between the ball joint (74) and the catch (64), thereby allowing the ball joint (74) to rotate smoothly.

[0052] FIG. 8 is a cross-sectional view showing the upper part of a swing-in type door structure of a vehicle according to one embodiment of the present invention as viewed from the side, and FIG. 9 is a cross-sectional view showing the upper part of a swing-in type door structure of a vehicle according to one embodiment of the present invention as viewed from inside the vehicle.

[0053] Referring to FIGS. 8 and 9, one end of the upper door bracket (50) is fixed to the upper surface of the door (2) by an upper door bracket fixing bolt (52), and the shaft pin (60) can be mounted by passing through the upper door bracket opening (66). Additionally, the other end of the shaft pin (60) has a ball joint (74) attached around it, and the ball joint (74) is inserted into the upper guide arm opening (72) so that it can roll and rotate within the upper guide arm opening (72) as the upper guide arm (70) pivots.

[0054] The shaft pin (60) can be screwed in by a nut (62) on both sides of the upper door bracket opening (66). By loosening the nut (62) and rotating the shaft pin (60), the upper door bracket (50) can move up and down, and as the upper door bracket (50) moves, the door (2) fixed to the upper door bracket (50) can move up and down. Thus, by adjusting the degree of insertion of the shaft pin (60) into the upper door bracket (50), the vertical position of the door (2) can be adjusted.

[0055] FIG. 10 is a drawing showing the lower part of a swing-in type door structure of a vehicle according to one embodiment of the present invention, and FIG. 11 is a drawing showing the combined state of a lower door bracket and a lower guide arm of a swing-in type door structure of a vehicle according to one embodiment of the present invention.

[0056] Referring to FIGS. 10 and 11, a swing-in type door structure of a vehicle according to one embodiment of the present invention may further include a lower door bracket (80) and a lower guide arm (90). One end of the lower door bracket (80) is fixed to the lower side of the vehicle body on the door (2) side, and the other end is connected to the lower end of the door arm (6). One end of the lower door bracket (80) may be provided in a plate shape and may be fixed to the surface of the vehicle body on the door (2) side by a lower door bracket fixing bolt (88). In addition, the other end of the lower door bracket (80) may be bent from one end of the lower door bracket (80) and connected to the lower end of the door arm (6).

[0057] One end of the lower guide arm (90) is pivotally connected to the lower end of the door arm (6) around the axis of the door arm (6), and the other end is fixed to the lower surface of the door (2). One end of the lower guide arm (90) can be rotatably connected by being interposed between the other end of the lower door bracket (80) and the lower end of the door arm (6). Additionally, a fixing pin (92) is provided at the other end of the lower guide arm (90), and the fixing pin (92) can be rotatably inserted into a fixing pin insertion member (94) provided on the lower surface of the door (2).

[0058] Meanwhile, an upper elongated hole (86) is formed at one end of the lower door bracket (80), and a lower door bracket fixing bolt (88) is inserted into the upper elongated hole (86) so that one end of the lower door bracket (80) can be fixed by being bolted to the lower side of the door (2) body. Multiple upper elongated holes (86) may be provided. By loosening the lower door bracket fixing bolt (88) provided in the upper elongated hole (86) to move the lower door bracket (80) up and down, and then tightening the lower door bracket fixing bolt (88) again to fix the lower door bracket (80), the height of the door arm (6) is adjusted, and thus the vertical height of the lower guide arm (90) connected to the door arm (6) and the door (2) connected to the other end of the lower guide arm (90) can be adjusted.

[0059] Meanwhile, a lower elongated hole (82) is formed at the other end of the lower door bracket (80), and a lower guide arm fixing bolt (84) is inserted into the lower elongated hole (82) so that the lower door bracket (80) and the lower guide arm (90) can be bolted to the lower end of the door arm (6). By loosening the lower guide arm fixing bolt (84) provided in the lower elongated hole (82) to move the door arm (6) in the vehicle width direction and then tightening the lower guide arm fixing bolt (84) again to fix the door arm (6), the distance of the door arm (6) in the vehicle width direction is adjusted, and thus the distance in the vehicle width direction between the lower guide arm (90) connected to the door arm (6) and the door (2) connected to the other end of the lower guide arm (90) can be adjusted.

[0060] Accordingly, according to an embodiment of the present invention, by finely adjusting the gap between the vehicle doors in a swing-in type door structure of a vehicle to minimize the gap around the door, dust and the like can be prevented from entering the vehicle interior and wind noise can be minimized.

[0061] In addition, by adjusting bolts or nuts, the step difference in the vertical and vehicle width directions of the door can be easily adjusted, thereby realizing a watertight structure.

[0062] Although preferred embodiments of the present invention have been described above, the present invention is not limited to the above embodiments and includes all modifications within the scope recognized as equivalent that can be easily made by those skilled in the art from the embodiments of the present invention. Explanation of the symbols

[0063] 2, 4: Door 3: Rail 6: Door Arm 8: Air Cylinder 10: Connecting Rod 12: Guide Arm 14: Roller 16: Bracket 20: Center Door Bracket 25: Center Door Bracket Fixing Bolt 30: Roller Bracket 32: First Roller Bracket 34: Second Roller Bracket 40: Roller 50: Upper Door Bracket 52: Upper Door Bracket Fixing Bolt 60: Shaft Pin 62: Nut 64: Catching Hook 66: Upper Door Bracket Opening 70: Upper Guide Arm 72: Upper Guide Arm Opening 74: Ball Joint 76: Shaft Pin Fixing Bolt 78: Ring 80: Lower Door Bracket 82: Lower Elongated Hole 84: Lower Guide Arm Fixing Bolt 86: Upper Elongated Hole 88: Lower Door Bracket Fixing Bolt 90: Lower Guide Arm 92: Fixing Pin 94: Fixing Pin Insertion Member

Claims

Claim 1 A swing-in type door structure comprising doors arranged parallel to each other on both sides of a vehicle's entrance and a door arm mounted on one side of the door to open and close the door by rotation, the structure comprising: a center door bracket having one end fixed to an upper center surface of the door and extending in a direction perpendicular to the door; a roller bracket having one end connected to the other end of the center door bracket in a direction perpendicular to the center door bracket; a roller mounted to the other end of the roller bracket and connected to rotate while in contact with a rail formed on the vehicle body above the door; an upper door bracket having one end fixed to an upper surface of the door between the door arm and the center door bracket and extending in a direction perpendicular to the door; and a shaft pin mounted in a direction perpendicular to the upper door bracket to penetrate the upper door bracket. A swing-in type door structure of a vehicle, comprising an upper guide arm, one end of which is rotatably coupled to one end of the shaft pin and the other end of which is fixed to the door arm and extends in a direction horizontal to the door, wherein a stopper is formed on one end of the shaft pin to act to catch on the entrance side of the upper guide arm opening into which the shaft pin is inserted. Claim 2 In claim 1, the roller bracket comprises a first roller bracket coupled to the center door bracket and a second roller bracket formed integrally extending from the first roller bracket and coupled to the roller, and the swing-in type door structure of a vehicle formed such that the horizontal radius of the first roller bracket is greater than the horizontal radius of the second roller bracket. Claim 3 In claim 2, the center axis of the first roller bracket is eccentric with respect to the center axis of the second roller bracket, in a swing-in type door structure of a vehicle. Claim 4 In claim 3, the swing-in type door structure of a vehicle is eccentric such that the center axis of the first roller bracket is spaced 4 mm to 6 mm apart from the center axis of the second roller bracket. Claim 5 In claim 2, one end of the first roller bracket is fixed to the other end of the center door bracket by a center door bracket fixing bolt, in a swing-in type door structure of a vehicle. Claim 6 delete Claim 7 A swing-in type door structure of a vehicle, wherein one end of the upper door bracket is fixed to the upper surface of the door by an upper door bracket fixing bolt in claim 1. Claim 8 A swing-in type door structure of a vehicle, wherein the shaft pin penetrates an upper door bracket opening formed in the upper door bracket, and the upper door bracket is fixedly mounted by nuts on both sides of the upper door bracket opening. Claim 9 A swing-in type door structure of a vehicle according to claim 1, wherein an upper guide arm opening into which the shaft pin is inserted is formed at one end of the upper guide arm, and a ball joint that rolls and rotates within the upper guide arm opening while being fixed to one end of the shaft pin is provided in the upper guide arm opening. Claim 10 delete Claim 11 In claim 1, a swing-in type door structure of a vehicle in which one end of the shaft pin and one end of the upper guide arm are joined by a shaft pin fixing bolt. Claim 12 A swing-in type door structure of a vehicle according to claim 1, further comprising: a lower door bracket, one end of which is fixed to the lower side of the door-side body and the other end of which is coupled to the lower end of the door arm; and a lower guide arm, one end of which is rotatably coupled to the lower end of the door arm and the other end of which is fixed to the lower surface of the door. Claim 13 In claim 12, an upper elongated hole is formed at one end of the lower door bracket, and a lower door bracket fixing bolt is inserted into the upper elongated hole so that the lower door bracket is fixed to the lower side of the door body, in a swing-in type door structure of a vehicle. Claim 14 In claim 12, one end of the lower guide arm is interposed and coupled between the other end of the lower door bracket and the lower end of the door arm, and a lower elongated hole is formed in the other end of the lower door bracket, and a lower guide arm fixing bolt is inserted through the lower elongated hole so that the lower door bracket and the lower guide arm are bolted to the lower end of the door arm, in a swing-in type door structure of a vehicle. Claim 15 In claim 12, a fixing pin is penetratingly connected to the other end of the lower guide arm, and the fixing pin is rotatably inserted into a fixing pin insertion member provided on one lower surface of the door, in a swing-in type door structure of a vehicle.

Images