Door hinge device for vehicles

Abstract

A vehicle door hinge device is disclosed. A vehicle door hinge device according to one embodiment of the present invention, in a vehicle without a B-pillar, a hinge slider connected to the hinge portion of the door slides diagonally outward along a rail inside a case to secure the rotational trajectory of the door, and then a slide latch portion configured on the hinge slider restrains a striker fixed to the case in conjunction with the operation of a link arm connected to a door hinge bracket, thereby fixing the sliding position of the hinge slider to stably achieve the opening and closing operation of the door.

Description

Technology Field

[0001] The present invention relates to a vehicle door hinge device, and more specifically, to a vehicle door hinge device that enables each door to open and close independently by pushing the hinge portion of the door outward from the vehicle body in a vehicle without a B-pillar. Background Technology

[0002] Generally, vehicle doors serve the important function of separating the interior and exterior of a vehicle, blocking external noise, rain, dust, and wind, and absorbing impact along with the side structure in the event of a side collision to safely protect the occupants.

[0003] There are various types of vehicle doors, including special-purpose doors, but hinged swing doors are most commonly used in passenger vehicles.

[0004] Typically, a swing door refers to a door that opens outward from the vehicle body around a hinge axis installed between the vehicle body and the hinge bracket, and has the advantages of being easy to open and close, having a simple structure, and being easy to maintain and repair.

[0005] Meanwhile, some vehicles feature opposing swing doors that provide a great sense of openness when opened and are advantageous for passengers getting on and off.

[0006] These opposing swing doors are classified into types without a B-pillar and types with a B-pillar.

[0007] FIG. 1 is a side view illustrating a vehicle equipped with opposing swing doors according to an example of the prior art, and FIG. 2 is a cross-sectional view illustrating the portion where the front door and the rear door meet in the vehicle of FIG. 1.

[0008] First, referring to FIGS. 1 and 2, an example of a facing swing door applied to a vehicle (100) without a B-pillar is shown. A hinge portion of the front door (110) is installed at the front end of the front door (110), and a hinge portion of the rear door (120) is installed at the rear end of the rear door (120).

[0009] For such opposing swing doors, a latch (LC) is installed on one side of the front door (110) or rear door (120) to maintain a locked state.

[0010] In addition, a sealing (S) for airtightness is installed between the rear end of the front door (110) and the front end of the rear door (120).

[0011] As described above, the opposing swing door of the vehicle (100) without a B-pillar has a good sense of openness when passengers get in and out or during leisure activities, but it has a disadvantage that the order of opening and closing is predetermined, such as having to open the front door (110) first or close it later, due to interference problems where the rotational trajectories of the front door (110) and the rear door (120) overlap when the front door (110) and the rear door (120) are opened and closed.

[0012] As such, the opening and closing sequence of the front door (110) and the rear door (120) is predetermined, so there is a problem that the rear door (120) cannot be opened or closed independently.

[0013] FIG. 3 is a side view illustrating a vehicle equipped with opposing swing doors according to another example of the prior art, and FIG. 4 is a cross-sectional view illustrating the portion where the front door and the rear door meet in the vehicle of FIG. 3.

[0014] Referring to FIGS. 3 and 4, an example of a facing swing door applied to a vehicle (200) having a B-pillar (230) is shown. In this case, the front door (210) has a hinge portion installed at the front end of the front door (210), and the rear door (220) has a hinge portion installed at the rear end of the rear door (220).

[0015] These opposing swing doors are equipped with a latch (LC) to maintain a locked state between each side of the front door (210) and the rear door (220) and the B-pillar (230).

[0016] In addition, a sealing (S) for airtightness is installed between the rear end of the front door (210) corresponding to the B-pillar (230) and the front end of the rear door (220) and the B-pillar (230).

[0017] As such, the opposing swing door of the vehicle (100) with the B-pillar is configured so that the front door (210) and the rear door (220) rotate relative to the B-pillar (230), allowing each to open and close independently, which has the advantage of a free operating sequence, but there is a problem that the sense of openness is reduced during passenger boarding / alighting or leisure activities due to the application of the B-pillar (230).

[0018] As such, the opposing swing door has a difference in the sense of openness depending on the presence or absence of the B-pillar, and there is a difference in the opening and closing operation of the front door and the rear door.

[0019] Meanwhile, as described above, in order to resolve the problem of the operating sequence of the front door (110) and the rear door (120) while maintaining the openness of the vehicle (100) without a B-pillar, there are examples in which a gooseneck type hinge device is applied as a door hinge device for a facing swing door, but such a gooseneck type hinge device requires a lot of extra space in the width direction of the vehicle body due to the characteristics of its shape, making it difficult to configure the vehicle body layout.

[0020] Accordingly, in order to apply a facing swing door to a vehicle without a B-pillar, a door hinge device is required to implement a new opening and closing structure. Prior art literature

[0021] The matters described in the background technology section of the Korean Intellectual Property Office Publication No. 2019-0028966 (Publication Date: March 20, 2019) are intended to enhance understanding of the background of the invention and may include matters that are not prior art already known to a person skilled in the art to which this technology belongs. The problem to be solved

[0022] An embodiment of the present invention aims to provide a vehicle door hinge device that, in a vehicle without a B-pillar, secures the rotational trajectory of the door by having a hinge slider connected to the hinge portion of the door slide along a rail inside a case in a diagonal direction toward the outside of the vehicle body, and then secures a striker fixed to the case by having a slide latch portion configured on the hinge slider restrain the slide movement position of the hinge slider in conjunction with the operation of a link arm connected to a door hinge bracket, thereby stably achieving the opening and closing operation of the door. means of solving the problem

[0023] In one or more embodiments of the present invention, a vehicle door hinge device comprises: a case installed diagonally toward the outside of the vehicle body on one side of the vehicle body corresponding to one end of the door, with a guide slot formed on the outer surface; rails formed longitudinally on the upper and lower sides of the interior of the case, respectively; and a hinge slider connected via a hinge axis to a door hinge bracket fixed to one end of the door through the guide slot, while being installed to slide along the rails inside the case, wherein the device comprises: a striker installed on one side of the interior of the case; and a slide latch portion installed on one side of the hinge slider inside the case, which restrains or releases the striker through a claw lever and a pawl lever at a position where the hinge slider slides diagonally toward the outside of the vehicle body. A vehicle door hinge device may be provided, comprising a link arm having one end hinge-connected to the door hinge bracket and a front end that is guided along a guide hole formed in the hinge slider and forms a pawl rod that acts on the pawl lever.

[0024] The above door may have one end formed by the front end of the front door or the rear end of the rear door.

[0025] The striker can be fixed to one side inside the case so as to be restrained by the claw lever in a state where the hinge slider slides diagonally outward from the vehicle body.

[0026] The slide latch portion may include: a first, second, and third shaft installed between a fixed plate protruding from one side of the lower portion of the hinge slider and the lower surface of the hinge slider; a claw lever rotatably installed on the first shaft, having a restraining groove formed on one side to restrain the striker and a support surface formed on the other side for limiting unidirectional rotation; a pawl lever rotatably installed on the second shaft corresponding to one side of the claw lever, having a support end formed on one side to act on the support surface and an acting end formed on the other side protruding and acted by the pawl rod of the link arm; and a claw damper installed on the third shaft corresponding to one side of the claw lever to limit unidirectional rotation of the claw lever.

[0027] Additionally, the slide latch portion may further include a claw spring fitted onto the first shaft to elastically support the claw lever in a rotational direction that releases the restraint of the striker; and a pawl spring fitted onto the second shaft to elastically support the pawl lever in a rotational direction where the support end of the pawl lever supports the support surface of the claw lever.

[0028] The hinge slider may comprise: an inner hinge slider in which the upper and lower sides are each connected to slide along the rail through the slider inside the case, and the slide latch portion is installed at the lower side; an upper outer hinge bar integrally connected to one side of the upper portion of the inner hinge slider through an upper guide slot formed on the upper outer surface of the case outside the case; and a lower outer hinge bar integrally connected to one side of the lower portion of the inner hinge slider through a lower guide slot formed on the lower outer surface of the case outside the case, and having a guide hole formed along the longitudinal direction to guide the pole rod.

[0029] The door hinge bracket may comprise: an upper door hinge bracket fixed to the upper side of one end of the door and hinge-connected to the front end of the upper outer hinge bar through a hinge axis; and a lower door hinge bracket fixed to the lower side of one end of the door and hinge-connected to the front end of the lower outer hinge bar through a hinge axis.

[0030] The link arm is positioned at the lower end of the lower outer hinge bar, and one end is hinge-connected to the front end of the lower door hinge bracket, and the pole rod can be installed at the front end so as to slide along the guide hole. Effects of the invention

[0031] A vehicle door hinge device according to an embodiment of the present invention can fix the sliding position of the hinge slider by restraining a striker fixed to the case in conjunction with the operation of a link arm connected to a door hinge bracket in a vehicle without a B-pillar, while the hinge slider connected to the hinge portion of the door slides diagonally outward along a rail to secure the rotational trajectory of the door.

[0032] Accordingly, it is possible to open and close both doors simultaneously or to open and close a single door independently.

[0033] In addition, after the hinge portion of the door slides diagonally outward from the vehicle body, the striker is restrained through the slide latch portion to maintain the sliding position of the hinge slider in a fixed state, and accordingly, stable door opening and closing operation by swing operation can be achieved.

[0034] The vehicle door hinge device according to an embodiment of the present invention maintains the advantage of a good sense of openness when passengers get on or off or engage in leisure activities in a facing swing door of a vehicle without a B-pillar, and has the effect of not affecting the order of opening and closing the doors even when each door is opened and closed.

[0035] In addition, since the user can manually open and close the door without a separate drive unit using a motor, it has the advantage of enabling door opening and closing operation even when the battery is discharged.

[0036] In addition, the vehicle door hinge device according to the embodiment of the present invention has the advantage of being slim compared to conventional driving units such as motors or gooseneck type hinge devices, and also has the advantage of providing room in the vehicle body layout configuration because it does not require extra space according to the operating radius. Brief explanation of the drawing

[0037] FIG. 1 is a side view illustrating a vehicle equipped with a facing swing door according to an example of the prior art. FIG. 2 is a cross-sectional view illustrating the part where the front door and the rear door meet in the vehicle of FIG. 1. FIG. 3 is a side view illustrating a vehicle equipped with opposing swing doors according to another example of the prior art. FIG. 4 is a cross-sectional view illustrating the part where the front door and the rear door meet in the vehicle of FIG. 3. FIG. 5 is an inner perspective view of a vehicle door to which a vehicle door hinge device according to an embodiment of the present invention is applied. FIGS. 6 and FIGS. 7 are perspective views projecting a case of a vehicle door hinge device according to an embodiment of the present invention. FIG. 8 is a perspective view of a slide latch portion projected from a hinge slider applied to a vehicle door hinge device according to an embodiment of the present invention. FIGS. 9 to 11 are plan cross-sectional views illustrating the stepwise operation states of a vehicle door hinge device according to an embodiment of the present invention. Specific details for implementing the invention

[0038] Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings.

[0039] However, the size and thickness of each component shown in the drawings are depicted arbitrarily for the convenience of explanation, and thus the present invention is not necessarily limited to what is shown in the drawings; thicknesses have been enlarged or reduced to clearly represent various parts and regions. Additionally, parts unrelated to the explanation have been omitted to clearly explain the embodiments of the present invention.

[0040] In describing the embodiments of the present invention, for convenience of explanation, the upper left direction of FIG. 5 is defined as the front and the lower right direction as the rear. Additionally, the vehicle door hinge device according to the embodiment of the present invention is described as an example applied to the rear door behind the passenger seat.

[0041] FIG. 5 is an inner perspective view of a vehicle door to which a vehicle door hinge device according to an embodiment of the present invention is applied, FIG. 6 and FIG. 7 are projected perspective views of a case of a vehicle door hinge device according to an embodiment of the present invention, and FIG. 8 is a perspective view of a slide latch portion projected of a hinge slider applied to a vehicle door hinge device according to an embodiment of the present invention.

[0042] The vehicle door hinge device (1) according to an embodiment of the present invention is described as being applied to the rear door behind the passenger seat of a passenger vehicle without a B-pillar, but is not limited thereto and can also be applied between the front doors (FDR) on both sides and the vehicle body (BD) of a passenger vehicle without a B-pillar, and between the rear doors (RDR) on both sides and the vehicle body (BD).

[0043] That is, when the doors are opened or closed, the front door (FDR) or the rear door (RDR) moves to the outside of the vehicle body (BD) in each diagonal direction in front of or behind the vehicle body (BD), thereby securing the rotational trajectory of each door, making it possible to open and close both doors simultaneously or open and close one door independently.

[0044] Referring to FIGS. 5 to 8, a vehicle door hinge device (1) according to an embodiment of the present invention may include a case (10), a hinge slider (20), a striker (30), a slide latch part (50), and a link arm (40).

[0045] The above case (10) is installed diagonally toward the outside of the vehicle body on one side of the vehicle body (BD) corresponding to one end of the door (DR).

[0046] Here, the term "door (DR)" may refer to a front door (FDR) or a rear door (RDR), and may refer to both simultaneously. That is, in the case of a front door (FDR), one end may be one side of the front end of the front door (FDR), and in the case of a rear door (RDR), one end may be one side of the rear end of the rear door (RDR).

[0047] And one side of the vehicle body (BD) on which the above-mentioned front door (FDR) is installed refers to one side of the front of the vehicle body (BD), and at this time, the front door (FDR) may be installed diagonally toward the front outer side of the vehicle body (BD).

[0048] In addition, one side of the vehicle body (BD) on which the rear door (RDR) is installed refers to one side of the rear of the vehicle body (BD), and at this time, the rear door (RDR) may be installed diagonally toward the rear outer side of the vehicle body (BD).

[0049] In addition, the above case (10) has two guide slots (SL1) and (SL2) formed on the outer surface, and an upper rail (RL1) and a lower rail (RL2) are installed along the longitudinal direction on the upper and lower sides, respectively, inside.

[0050] That is, the above case (10) is formed by assembling an outer case (11) and an inner case (13) together.

[0051] The above outer case (11) faces the outside of the vehicle body (BD), and is cut along the longitudinal direction at the upper and lower parts of the cross-section, respectively, so that an upper guide slot (SL1) and a lower guide slot (SL2) are formed parallel to each other.

[0052] The inner case (13) faces the inner side of the vehicle body (BD) and is assembled with the outer case (11).

[0053] And the upper rail (SL1) is arranged longitudinally along the internal joint of the outer case (11) and the inner case (13) and fixed to the inner upper surface, and the lower rail (SL2) is arranged longitudinally along the internal joint of the outer case (11) and the inner case (13) and fixed to the inner lower surface.

[0054] In addition, the hinge slider (20) is installed between the outer case (11) and the inner case (13) via the upper rail (RL1) and the lower rail (RL2), and the striker (30) is installed on the inner cross-section of the inner case (13).

[0055] In addition, the slide latch portion (50) is installed on one side of the lower portion of the hinge slider (20) inside the space between the outer case (11) and the inner case (13).

[0056] The hinge slider (20) is installed to slide along the upper rail (RL1) and lower rail (RL2) through two sliders (SD1) (SD2) inside the case (10), and is connected to a door hinge bracket (3) fixed to one end of the door (DR) outside the case (10) through two guide slots (SL1) (SL2) via a hinge shaft (5).

[0057] That is, the hinge slider (20) is composed of an inner hinge slider (21) located inside the case (10) and upper and lower outer hinge bars (23) (25) located outside the case (10).

[0058] The inner hinge slider (21) is connected to the upper rail (RL1) so as to be slidably movable through the upper slider (SD1) inside the case (10), and the lower rail (RL2) so as to be slidably movable through the lower slider (SD2).

[0059] The upper and lower outer hinge bars (23)(25) are integrally connected to the inner hinge slider (21) through the upper and lower guide slots (SL1)(SL2), respectively, on the outside of the outer case (11), and their ends are hinge-connected to the door hinge bracket (3) through the hinge shaft (5).

[0060] That is, the upper outer hinge bar (23) is integrally connected to one side of the upper part of the inner hinge slider (21) through an upper guide slot (SL1) formed on the upper part of the outer surface of the outer case (11) from the outside of the outer case (11).

[0061] The lower outer hinge bar (25) is integrally connected to one side of the lower portion of the inner hinge slider (21) through a lower guide slot (SL2) formed on the lower portion of the outer surface of the outer case (11) from the outside of the outer case (11).

[0062] In addition, the lower outer hinge bar (25) has a guide hole (27) formed along the longitudinal direction.

[0063] And the door hinge bracket (3) is composed of an upper door hinge bracket (3a) and a lower door hinge bracket (3b).

[0064] That is, the upper door hinge bracket (3a) is fixed to the upper side of one end of the door (DR) and is hinge-connected to the tip of the upper outer hinge bar (23) through a hinge shaft (5).

[0065] In addition, the lower door hinge bracket (3b) is fixed to the lower side of one end of the door (DR) and is hinge-connected to the front end of the lower outer hinge bar (25) through a hinge shaft (5).

[0066] The striker (30) is fixedly installed on one side of the inner case (13) inside the space between the outer and inner cases (11)(13).

[0067] Here, the striker (30) may be formed in a rod shape and may be fixed to a flange (13a) protruding from the inner case (13).

[0068] This striker (30) is positioned so that the hinge slider (20) is slid diagonally outward from the vehicle body and is constrained to the slide latch (50).

[0069] The slide latch portion (50) is installed on one side of the lower portion of the inner hinge slider (21) inside between the outer and inner cases (11)(13).

[0070] These slide latch parts (50) operate to restrain or release the striker (30) through the claw lever (51) and pawl lever (53) at a position where the hinge slider (20) slides diagonally outward from the vehicle body.

[0071] That is, the slide latch portion (50) includes first, second, and third axes (S51)(S53)(S55), a claw lever (51), a pawl lever (53), and a claw damper (55).

[0072] The first, second, and third axes (S51)(S53)(S55) are installed between a fixed plate (57) formed protruding from one side of the lower portion of the inner hinge slider (21) and the lower surface of the inner hinge slider (21).

[0073] Here, the first, second, and third axes (S51)(S53)(S55) are installed adjacent to each other.

[0074] The above claw lever (51) is rotatably installed on the first axis (S51). Additionally, the claw lever (51) has a restraining groove (61) formed on one side for restraining the striker (30), and a support surface (63) formed on the other side for limiting rotation in one direction.

[0075] The above-mentioned pole lever (53) is rotatably installed on the second axis (S53) corresponding to one side of the above-mentioned claw lever (51). Additionally, the above-mentioned pole lever (53) has a support end (65) formed on one side that acts on the support surface (63), and an acting end (67) formed on the other side that protrudes.

[0076] The above claw damper (55) is installed on the third axis (S55) to limit the unidirectional rotation of the claw lever (51) and supports one side of the claw lever (51) to suppress unidirectional rotation and reduce contact noise.

[0077] Additionally, the slide latch portion (50) further includes a claw spring (71) and a pawl spring (73).

[0078] The above claw spring (71) is fitted onto the first shaft (S51) and installed to elastically support the claw lever (51) in a rotational direction that releases the restraint of the striker (30).

[0079] Additionally, the above-mentioned pole spring (73) is fitted onto the above-mentioned second shaft (S53) and is installed to elastically support the pole lever (53) in a rotational direction in which the support end (65) supports the support surface (63) of the above-mentioned claw lever (51).

[0080] And one end of the link arm (40) is hinge-connected to the front end of the lower door hinge bracket (3b) through a hinge pin (43), and a pole rod (41) is installed at the front end, which is guided along a guide hole (27) formed in the lower outer hinge bar (25) and acts on the operating end (67) of the pole lever (53).

[0081] That is, the above-mentioned pole rod (41) is connected to the lower door hinge bracket (3b) through the link arm (40) and acts on the action end (67) of the pole lever (53) according to the opening and closing operation of the door (DR), so that the pole lever (53) can fix or release the rotation of the claw lever (51).

[0082] Hereinafter, the specific operation of a vehicle door hinge device according to an embodiment of the present invention will be described with reference to FIGS. 9 to 11.

[0083] FIGS. 9 to 11 are plan cross-sectional views illustrating the stepwise operation states of a vehicle door hinge device according to an embodiment of the present invention.

[0084] First, referring to Fig. 9, the door (DR) is in a closed state.

[0085] At this time, the hinge axis (5) connecting the door (DR) and the car body (BD) is moved diagonally inward along with the hinge slider (20) of the car body (BD), and the hinge portion (HG) of the door (DR) is in a position where the door (DR) maintains a closed state.

[0086] At this time, the slide latch portion (50) maintains a state in which the support portion (65) is detached from the support surface (63) of the claw lever (51) by pushing the action portion (67) of the pawl rod (41), and the claw lever (51) is rotated by the claw spring (71) so that the restraint groove (61) of the claw lever (51) is opened at an angle into which the striker (30) can enter.

[0087] Referring to FIG. 10, as described above, when the user performs a sliding operation to open the door (DR) while the door (DR) is closed, the hinge portion (HG) of the door (DR) moves diagonally outward from the vehicle body (BD).

[0088] Then, the hinge slider (20), which is connected to the door hinge bracket (3) through the hinge shaft (5), slides diagonally outward along the upper and lower rails (RL1) (RL2) of the vehicle body (BD).

[0089] Additionally, the slide latch portion (50) is in a state where it is constrained in the restraint groove (61) as the striker (30) pushes and rotates one side of the restraint groove (61) of the claw lever (51). At this time, the pawl rod (41) is in a state where it is pushing the action end (67) of the pawl lever (53), and the support end (65) of the pawl lever (53) is maintained in a state where it is detached from the support surface (63) of the claw lever (51).

[0090] Referring to FIG. 11, after the sliding operation of the door (DR) is completed, the user performs a swing operation to open the door (DR).

[0091] Then, the door (DR) rotates around the hinge axis (5) as the center of rotation.

[0092] At this time, the slide latch part (50) is connected to the lower door hinge bracket (3b) and the link arm (40) through the pawl rod (41), which moves diagonally outward along the guide hole (27) and separates from the action end (67) of the pawl lever (53).

[0093] Then, the above-mentioned pole lever (53) rotates by the pole spring (73), and the support end (65) matches the support surface (63) of the claw lever (51), thereby fixing the claw lever (51) so that it cannot rotate.

[0094] Accordingly, the striker (30) is maintained in a restrained state in the restraining groove (61) of the claw lever (51), and the door (DR) is fixed in a position where the hinge part (HG) with the vehicle body (BD) slides diagonally outward from the vehicle body (BD), thereby securing a rotational trajectory without interference with the vehicle body (BD) or other doors (DR), and stably enabling the user to swing the door (DR).

[0095] Here, the pole rod (41) is connected to the lower door hinge bracket (3b) through the link arm (40) so that the working end (67) of the pole lever (53) is pushed from the closed position of the door (DR) to the completed sliding position, causing the supporting end (65) to detach from the supporting surface (63) of the claw lever (51).

[0096] Additionally, as the door (DR) begins swinging from the completed sliding position, the above-mentioned pawl rod (41) moves diagonally outward along the guide hole (27) by the link arm (40) and separates from the action end (67) of the pawl lever (53), and as the pawl lever (53) rotates by the pawl spring (73), the support end (65) matches the support surface (63) of the claw lever (51) to fix the claw lever (51) in the rotational direction.

[0097] Meanwhile, when the door (DR) is closed again while it is in a fully open state, the door (DR) is closed through swing operation and slide movement operation with the hinge axis (5) as the center of rotation.

[0098] Here, closing the door (DR) is achieved by performing a swing operation opposite to that of opening, and then sliding the door (DR) again in an inward diagonal direction of the vehicle body (BD).

[0099] At this time, in order to completely close the door (DR), the striker (30) must be released from the restraint groove (61) of the claw lever (51) before sliding.

[0100] To this end, during the process in which the door (DR) is closed by swinging, with reference to FIG. 10, the pawl rod (41) moves diagonally inward along the guide hole (27) to push the action end (67) of the pawl lever (53) and rotate the pawl lever (53).

[0101] Then, the support portion (65) of the above-mentioned pole lever (53) detaches from the support surface (63) of the claw lever (51), thereby releasing the support state of the claw lever (51).

[0102] In this state, the claw lever (51) becomes rotatable, but the door (DR) is in a state before sliding movement, and depending on the position of the door (DR), the striker (30) maintains a position restrained in the restraint groove (61) of the claw lever (51).

[0103] Next, when the user slides the door (DR) inward diagonally toward the vehicle body (BD), the hinge slider (20) moves inward diagonally toward the vehicle body (BD) along the upper rail (RL1) and the lower rail (RL2), and the striker (30) disengages from the restraining groove (61) of the claw lever (51), thereby closing the door (DR).

[0104] Accordingly, in a vehicle door hinge device (1) according to an embodiment of the present invention, in a vehicle without a B-pillar, a hinge slider (20) connected to the hinge portion (HG) of the door (DR) slides diagonally outward along the upper and lower rails (RL1) (RL2) inside the case (10) to secure the rotational trajectory of the door (DR), thereby making it possible to open and close both doors (DR) simultaneously or open and close only one door (DR) independently.

[0105] At this time, the slide latch part (50) fixed to the hinge slider (20) can restrain the striker (30) fixed to the case (10) through the linked operation of the link arm (40) connected to the door hinge bracket (3), thereby fixing the slide movement position of the hinge slider (20), and thus the opening and closing operation of the door can be achieved stably.

[0106] In addition, by allowing the user to manually open and close the door (DR) without a separate drive unit using a motor, the door can be opened and closed even when the battery is discharged.

[0107] In addition, the vehicle door hinge device (1) according to the embodiment of the present invention has the advantage of being slim compared to conventional driving units such as motors or gooseneck type hinge devices, and also has the advantage of being able to accommodate the vehicle body layout configuration without requiring extra space due to the operating radius.

[0108] Although one embodiment of the present invention has been described above, the present invention is not limited to such embodiment and includes all modifications within the scope recognized as equivalent that can be easily modified by a person skilled in the art to which the present invention belongs from the embodiment of the present invention. Explanation of the symbols

[0109] 1: Door hinge mechanism 3: Door hinge bracket 5: Hinge axis 7: Striker HG: Hinge part BD: Chassis FDR: Front Door RDR: Rear Door DR: Door 10: Case 11: External case 13: Medial case 20: Hinge Slider 21: Inner hinge slider 23: Upper outer hinge bar 25: Lower outer hinge bar 27: Guide Hole 30: Striker 40: Link Arm 41: Fall Road 43: Hinge pin 50: Slide latch S51, S53, S55: 1st, 2nd, and 3rd axes 51: Claw Lever 53: Paul Lever 55: Claw Damper 57: Fixed plate 61: Restraint Home 63: Support surface 65: Support group 67: Action point 71: Claw Spring 73: Paul Spring SL1, SL2: Upper and lower guide slots RL1, RL2: Upper and lower rails SD1, SD2: Upper and lower sliders

Claims

Claim 1 A vehicle door hinge device comprising: a case installed diagonally toward the outside of the vehicle body on one side of the vehicle body corresponding to one end of the door; rails formed longitudinally on the upper and lower sides inside the case, respectively; and a hinge slider connected via a hinge axis to a door hinge bracket fixed to one end of the door while installed to slide along the rails inside the case, wherein the device comprises: a striker installed on one side inside the case; a slide latch portion installed on one side of the hinge slider inside the case, which restrains or releases the striker through a claw lever and a pawl lever at a position where the hinge slider slides diagonally toward the outside of the vehicle body; and a link arm having one end hinge-connected to the door hinge bracket, and a pawl rod formed at the tip end that acts on the pawl lever by being guided along a guide hole formed in the hinge slider. Claim 2 In claim 1, the door is a vehicle door hinge device in which one end is formed as the front end of a front door or the rear end of a rear door. Claim 3 In claim 1, the striker is a vehicle door hinge device fixed to one side inside the case so as to be restrained by the claw lever in a state where the hinge slider slides diagonally outward from the vehicle body. Claim 4 A vehicle door hinge device comprising: a slide latch portion, a first, second, and third shaft installed between a fixed plate protruding from one side of the lower portion of the hinge slider and the lower surface of the hinge slider; a claw lever rotatably installed on the first shaft, having a restraining groove formed on one side for restraining the striker and a support surface formed on the other side for limiting unidirectional rotation; a pawl lever rotatably installed on the second shaft corresponding to one side of the claw lever, having a support end formed on one side acting on the support surface and an acting end formed protruding from the other side and acting by the pawl rod of the link arm; and a claw damper installed on the third shaft corresponding to one side of the claw lever to limit unidirectional rotation of the claw lever. Claim 5 A vehicle door hinge device according to claim 4, further comprising: a claw spring fitted onto the first shaft to elastically support the claw lever in a rotational direction that releases the restraint of the striker; and a pawl spring fitted onto the second shaft to elastically support the pawl lever in a rotational direction in which the support end of the pawl lever supports the support surface of the claw lever. Claim 6 A vehicle door hinge device according to claim 1, wherein the hinge slider comprises: an inner hinge slider in which the upper and lower sides are respectively connected within the case so as to be slidably movable along the rail through the slider, and the slide latch portion is installed at the lower end; an upper outer hinge bar integrally connected to one side of the upper portion of the inner hinge slider through an upper guide slot formed on the upper outer surface of the case outside the case; and a lower outer hinge bar integrally connected to one side of the lower portion of the inner hinge slider through a lower guide slot formed on the lower outer surface of the case outside the case, and having a guide hole formed along the longitudinal direction to guide the pole rod. Claim 7 A vehicle door hinge device according to claim 6, wherein the door hinge bracket comprises: an upper door hinge bracket fixed to the upper side of one end of the door and hinge-connected to the front end of the upper outer hinge bar through a hinge axis; and a lower door hinge bracket fixed to the lower side of one end of the door and hinge-connected to the front end of the lower outer hinge bar through a hinge axis. Claim 8 A vehicle door hinge device according to claim 7, wherein the link arm is positioned at the lower end of the lower outer hinge bar, one end of which is hinge-connected to the front end of the lower door hinge bracket, and the pole rod is installed at the front end so as to be slidably movable along the guide hole.

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