Vehicle tail door device

Abstract

A vehicle tailgate apparatus may include: a tailgate configured to move between an open position and a closed position at a rear end of a luggage compartment of a vehicle body; and a drive mechanism configured to move the tailgate between an open position and a closed position, wherein the drive mechanism includes: a spindle driver capable of extending or retracting; and the cable is connected with the main shaft driver and the tail door.

Description

[0001] Cross-references to related applications

[0002] This application is based on and claims priority to Korean Patent Application No. 10-2024-0106938, filed with the Korean Intellectual Property Office on August 9, 2024, the disclosure of which is incorporated herein by reference in its entirety. Technical Field

[0003] This disclosure relates to a vehicle tailgate device. Background Technology

[0004] Vehicles such as pickup trucks or sport utility vehicles (SUVs) may include a luggage compartment located at the rear of the vehicle body and a tailgate designed to allow access to the luggage compartment. When the tailgate is open, luggage can be loaded into and unloaded from the luggage compartment. That is, the tailgate is referred to as the luggage compartment door.

[0005] There are various types of tailgates, categorized as follows: traditional tailgates; pull-down tailgates that open and close by pulling down; split tailgates with two doors that open and close by swinging; and multi-functional tailgates that open and close in various modes.

[0006] The tailgate can be configured to open and close via a pull-down mechanism. Existing drive mechanisms may include actuators configured to provide torque directly to the hinge axis; however, in existing drive mechanisms, the tailgate can deform severely when the actuator provides excessive torque to the hinge axis, and actuator failure can occur frequently.

[0007] According to existing technology, the width of the tailgate can be smaller than the width of the luggage compartment (or floor) because its two sides are inside the side walls of the vehicle body. Therefore, when the tailgate is opened by pulling down (i.e., the tailgate moves to its open position facing the rear of the vehicle), the tailgate may not be able to open the entire luggage compartment, resulting in a relatively smaller opening width (opening area) of the luggage compartment.

[0008] When a split tailgate in the prior art opens by swinging, the opening position is limited to the rear of the vehicle. Because the door is located at the rear of the vehicle when open, this limitation may hinder luggage loading and unloading, trailer connection, and user movement. In other words, the utilization rate of rear space in the prior art split tailgate is reduced when the door is open.

[0009] In existing split tailgate designs, the two doors can be configured to open and close sequentially, and independent opening and closing of the two doors may not be permitted. Therefore, if the opening and closing of the two doors is not performed in sequence, there is a risk of damage to each door.

[0010] In addition, existing tailgate technology may not be easy to open and close because its opening switch is not intuitive to use.

[0011] In existing split tailgate designs, the swing path of each door can be relatively large, which is not conducive to opening the door in narrow spaces.

[0012] The information described in this Background section is provided to aid in understanding the background of this disclosure and may include any information that is not considered to be prior art that is known, available, or in use. Summary of the Invention

[0013] This disclosure relates to a vehicle tailgate device, and more particularly to a vehicle tailgate device designed to stably open and close a tailgate.

[0014] Embodiments of this disclosure can provide a vehicle tailgate device designed to reliably open and close the tailgate using a spindle drive and cables.

[0015] According to embodiments of this disclosure, a vehicle tailgate assembly may include: a tailgate configured to move between an open position and a closed position at the rear end of a vehicle's luggage compartment; and a drive mechanism configured to move the tailgate between the open and closed positions. The drive mechanism may include: a spindle drive configured to extend or retract; and a cable connecting the spindle drive and the tailgate.

[0016] The tailgate can be in the closed position when the spindle drive is extended, and in the open position when the spindle drive is retracted.

[0017] The main shaft drive may include: a first end disposed adjacent to the tailgate; and a second end located at a position further away from the tailgate. When the main shaft drive extends or retracts, the second end of the main shaft drive may be configured to move toward the front or rear of the vehicle body.

[0018] The first end of the cable can be connected to the tailgate, and the second end of the cable can be connected to the second end of the spindle drive.

[0019] The drive mechanism may also include a guide rail that guides the movement of the second end of the spindle drive.

[0020] The drive mechanism may also include a track block connected to a second end of the spindle drive, and the track block may be configured to slide along a guide rail.

[0021] The second end of the cable can be connected to the track block.

[0022] The track block may include: a sliding groove in which the guide rail is slidably embedded; a connecting protrusion to which the second end of the spindle driver is connected; and a retaining pin to which the second end of the cable is connected.

[0023] The drive mechanism may also include a stop that limits the range of movement of the track block when it moves toward the rear of the vehicle body.

[0024] The drive mechanism may also include a guide pulley for guiding the movement of the cable.

[0025] The spindle drive may include: a housing tube; a movable tube that moves relative to the housing tube; a motor disposed in the housing tube; a spindle configured to rotate by the motor; and a spindle nut engaging with the spindle. The movable tube may be configured to move between a retracted position close to the housing tube and an extended position away from the housing tube.

[0026] The spindle drive may also include a guide tube configured to guide the movement of the moving tube.

[0027] The spindle drive may also include a spring that allows the moving tube to be biased to the extended position.

[0028] The vehicle tailgate assembly includes: a tailgate configured to move between an open position and a closed position at the rear end of the vehicle's luggage compartment; and a drive mechanism configured to move the tailgate between the open and closed positions, wherein the drive mechanism includes: a main shaft drive configured to extend or retract; and a cable connecting the main shaft drive and the tailgate. The vehicle tailgate assembly is configured such that the main shaft drive extends in the closed position and retracts in the open position. The main shaft drive includes: a first main shaft end disposed adjacent to the tailgate; and a second main shaft end located further away from the tailgate than the first main shaft end, wherein the vehicle tailgate assembly is configured such that when the main shaft drive extends, the second main shaft end of the main shaft drive moves towards the front of the vehicle body, and when the main shaft drive retracts, the second main shaft end of the main shaft drive moves towards the rear of the vehicle body. A first cable end is connected to the tailgate, and a second cable end is connected to a second spindle end of the spindle drive. The tailgate includes a main frame having a bottom and a pair of sides extending from both ends of the bottom, wherein at least a portion of the luggage compartment is defined by the inner surfaces of a pair of sidewalls and a floor plate, wherein the pair of sides of the main frame are aligned with the corresponding outer surfaces of the pair of sidewalls, and wherein the bottom is aligned with the floor plate.

[0029] The first end of the cable can be connected to the main frame.

[0030] The tailgate is configured such that, when the main frame is in the closed position, the outer surfaces of each pair of side sections of the main frame are aligned with the corresponding outer surfaces of each pair of sidewalls. The tailgate is also configured such that, when the main frame is in the closed position, each pair of side sections of the main frame covers the corresponding rearward outer surfaces of each pair of sidewalls. When the main frame is in the open position, the tailgate is configured such that, when the main frame is in the open position, the corresponding rearward outer surfaces of each pair of sidewalls are exposed and not covered by the pair of side sections of the main frame.

[0031] The tailgate is configured such that when the main frame is in the closed position, the upper surface of the bottom of the main frame is aligned with the floor plate, and the tailgate is configured such that when the main frame is in the open position, the side of the bottom of the main frame is aligned with the floor plate.

[0032] The vehicle tailgate assembly also includes: a main taillight assembly disposed below the tailgate; and auxiliary taillight assemblies disposed on corresponding rearward outer surfaces of a pair of sidewalls, wherein the tailgate is configured such that when the main frame is in the open position, the auxiliary taillight assemblies are exposed and not covered by the pair of sides of the main frame, and the tailgate is configured such that when the main frame is in the closed position, one or both of the pair of sides of the main frame cover the auxiliary taillight assemblies.

[0033] The vehicle tailgate assembly includes: a tailgate configured to move between an open position and a closed position at the rear end of the vehicle's luggage compartment; a drive mechanism configured to move the tailgate between the open and closed positions, wherein the drive mechanism includes: a main shaft drive configured to extend or retract; and a cable connected between the main shaft drive and the tailgate. The vehicle tailgate assembly is configured such that the main shaft drive extends in the closed position and retracts in the open position. The main shaft drive includes: a first main shaft end disposed adjacent to the tailgate; and a second main shaft end located further away from the tailgate than the first main shaft end, wherein the vehicle tailgate assembly is configured such that when the main shaft drive extends, the second main shaft end of the main shaft drive moves forward toward the vehicle body, and when the main shaft drive retracts, the second main shaft end of the main shaft drive moves rearward toward the vehicle body. A first cable end is connected to the tailgate, and a second cable end is connected to the second main shaft end of the main shaft drive. The tailgate includes a main frame having a bottom and a pair of sides extending from both ends of the bottom, at least a portion of the luggage compartment being defined by the inner surfaces of a pair of sidewalls and a floor plate, the pair of sides of the main frame being aligned with the corresponding outer surfaces of the pair of sidewalls, and the bottom being aligned with the floor plate; and a pair of doors pivotally connected to the pair of sides of the main frame by hinges, the pair of doors being disposed in openings defined by the bottom of the main frame and the pair of sides.

[0034] Each hinge is configured to pivot about a first vertical axis adjacent to one of a pair of sidewalls of the vehicle body, and each hinge is also configured to pivot about a second vertical axis adjacent to one of a pair of doors, with the second vertical axis being parallel to the first vertical axis. Attached Figure Description

[0035] The above and other features and advantages of exemplary embodiments of the present disclosure will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which:

[0036] Figure 1 The diagram illustrates a tailgate in the closed position in a vehicle tailgate assembly according to an example embodiment of the present disclosure.

[0037] Figure 2 The diagram shows the tailgate in the open position in a vehicle tailgate device according to an example embodiment of the present disclosure;

[0038] Figure 3 The diagram shows a vehicle tailgate assembly according to an example embodiment of the present disclosure, in which the first door and the second door are in a first open position and the main frame of the tailgate is in a closed position.

[0039] Figure 4 The diagram shows a vehicle tailgate assembly according to an example embodiment of the present disclosure, in which the first door and the second door are in a second open position and the main frame of the tailgate is in a closed position.

[0040] Figure 5 The deployment of the pedal mechanism is shown in the open position of the tailgate in a vehicle tailgate device according to an exemplary embodiment of the present disclosure;

[0041] Figure 6 An exploded perspective view of a tailgate assembly in a vehicle tailgate device according to an exemplary embodiment of the present disclosure is shown.

[0042] Figure 7 An exploded perspective view of the main frame in a vehicle tailgate assembly according to an exemplary embodiment of the present disclosure is shown.

[0043] Figure 8 An exploded perspective view is shown of the side, connecting member, cover member, and bottom of the main frame in a vehicle tailgate assembly according to an exemplary embodiment of the present disclosure.

[0044] Figure 9 A rear view of a vehicle with the tailgate in the closed position in a vehicle tailgate device according to an exemplary embodiment of the present disclosure is shown.

[0045] Figure 10 Show along Figure 9 A cross-sectional view taken from line AA;

[0046] Figure 11 The diagram shows a vehicle tailgate assembly according to an example embodiment of the present disclosure in which the door limiter mechanism is mounted on the side of the main frame;

[0047] Figure 12 Show along Figure 9 A cross-sectional view of line BB;

[0048] Figure 13 A first hinge seat of a first bottom hinge mounted on the side wall of a vehicle body is shown in a vehicle tailgate assembly according to an exemplary embodiment of the present disclosure.

[0049] Figure 14A first hinge support is shown in a vehicle tailgate assembly according to an exemplary embodiment of the present disclosure, where a first bottom hinge is mounted on the main frame.

[0050] Figure 15 A second hinge seat for a second bottom hinge mounted on the side wall of a vehicle body is shown in a vehicle tailgate assembly according to an exemplary embodiment of the present disclosure;

[0051] Figure 16 A second hinge support is shown in a vehicle tailgate assembly according to an exemplary embodiment of the present disclosure, where a second bottom hinge is mounted on the main frame;

[0052] Figure 17 Show along Figure 9 A cross-sectional view taken from line CC;

[0053] Figure 18 Show along Figure 9 A cross-sectional view of line DD;

[0054] Figure 19 The diagram shows the tailgate in the closed position as viewed from inside the luggage compartment in a vehicle tailgate device according to an example embodiment of the present disclosure.

[0055] Figure 20 A perspective view of a stopper in a door limiter mechanism of a vehicle tailgate device according to an exemplary embodiment of the present disclosure;

[0056] Figure 21 A cross-sectional view showing the state in which the limiting strip of the door limiter mechanism is accommodated inside the door when the door is in the closed position in a vehicle tailgate device according to an example embodiment of the present disclosure;

[0057] Figure 22 A cross-sectional view showing the state in which the hinge arm of the side hinge pivots about a first vertical axis when the door is open in a vehicle tailgate device according to an exemplary embodiment of the present disclosure;

[0058] Figure 23 A cross-sectional view is shown of the state in which the limit strip engages with the stop in a vehicle tailgate device according to an exemplary embodiment of the present disclosure when the door is in the first open position;

[0059] Figure 24 A cross-sectional view showing the state in which the limit bar is released from the stop when the door pivots from a first open position to a closed position in a vehicle tailgate device according to an exemplary embodiment of the present disclosure;

[0060] Figure 25 A cross-sectional view is shown of a vehicle tailgate device according to an example embodiment of the present disclosure, in which the limiting strip is released from the door portion through the side opening of the door when the door is pivoted toward the closed position;

[0061] Figure 26 A cross-sectional view showing the state in which the limiting strip is fully released from the stop when the door is moved back to the first open position in a vehicle tailgate device according to an example embodiment of the present disclosure;

[0062] Figure 27 A cross-sectional view showing a vehicle tailgate device according to an exemplary embodiment of the present disclosure, in which the limiting strip is fully released from the stop and the door is moved from a first open position to a second open position;

[0063] Figure 28 A cross-sectional view is shown in the vehicle tailgate device according to an example embodiment of the present disclosure, showing the state in which the limiting strip is accommodated in the recess of the side wall when the limiting strip is folded to the limiting bracket.

[0064] Figure 29 A cross-sectional view showing the state in which the door moves from a second open position to a first open position in a vehicle tailgate device according to an exemplary embodiment of the present disclosure;

[0065] Figure 30 The diagram shows the tailgate in the closed position as viewed from outside the vehicle in a vehicle tailgate device according to an example embodiment of the present disclosure, when the main shaft drive of the drive mechanism is extended.

[0066] Figure 31 The diagram shows the tailgate in the open position as viewed from outside the vehicle in a vehicle tailgate device according to an example embodiment of the present disclosure, when the main shaft drive of the drive mechanism is retracted.

[0067] Figure 32 The diagram shows the tailgate in the closed position as viewed from inside the luggage compartment in a vehicle tailgate device according to an example embodiment of the present disclosure, when the main shaft drive of the drive mechanism is extended.

[0068] Figure 33 The diagram shows the tailgate in the open position when the main shaft drive of the drive mechanism is retracted, as viewed from inside the luggage compartment in a vehicle tailgate device according to an example embodiment of the present disclosure.

[0069] Figure 34 An exploded perspective view of a drive mechanism in a vehicle tailgate device according to an exemplary embodiment of the present disclosure is shown.

[0070] Figure 35 A perspective view is shown of the front of the main shaft drive, the guide pulley, and the first cable of the drive mechanism in a vehicle tailgate device according to an exemplary embodiment of the present disclosure;

[0071] Figure 36 The diagram shows the retracted state of the main shaft drive of the drive mechanism in a vehicle tailgate device according to an example embodiment of the present disclosure;

[0072] Figure 37 An enlarged view showing the state in which the track block is restricted by a stopper when the main shaft drive of the drive mechanism retracts in a vehicle tailgate device according to an exemplary embodiment of the present disclosure;

[0073] Figure 38 The diagram shows the extended state of the main shaft drive of the drive mechanism in a vehicle tailgate device according to an example embodiment of the present disclosure;

[0074] Figure 39 A perspective view of the track block of the drive mechanism in a vehicle tailgate device according to an exemplary embodiment of the present disclosure is shown.

[0075] Figure 40 A cross-sectional view is shown of the main shaft drive of the drive mechanism in a vehicle tailgate device according to an exemplary embodiment of the present disclosure; and

[0076] Figure 41 A block diagram of a control system between a controller and components connected thereto in a vehicle tailgate device according to an example embodiment of the present disclosure.

[0077] Explanation of reference numerals in the attached figures

[0078] 2: Vehicles

[0079] 3: Luggage compartment

[0080] 4: Sidewall

[0081] 5: Base plate

[0082] 6: Car Cabin

[0083] 7: Rear bumper

[0084] 10: Tailgate

[0085] 11: Main Frame

[0086] 11a: Bottom

[0087] 11b: First side

[0088] 11c: Second side

[0089] 12: First Gate

[0090] 13: Second Gate

[0091] 14a: First bottom hinge

[0092] 14b: Second bottom hinge

[0093] 15a: First side hinge

[0094] 15b: Second side hinge

[0095] 17: Main Light

[0096] 18: Auxiliary lights

[0097] 19a: First firing pin

[0098] 19b: Second firing pin

[0099] 21a: Bottom component

[0100] 21b: Strengthening component

[0101] 22a: First side member

[0102] 22b: First side molded part

[0103] 23a: Second side member

[0104] 23b: Second side molded part

[0105] 24a: First connecting member

[0106] 24b: First cover component

[0107] 25a: Second connecting member

[0108] 25b: Second cover component

[0109] 26a: First upper decorative piece

[0110] 26b: First interior trim piece

[0111] 27a: Second upper decorative piece

[0112] 27b: Second interior trim piece

[0113] 28a: First door handle

[0114] 28b: First gap

[0115] 28c: First door open switch

[0116] 29a: Second door handle

[0117] 29b: Second hand gap

[0118] 29c: Second door open switch

[0119] 31a, 32a: Upper accommodating part

[0120] 31b, 32b: Lower receiving section

[0121] 37: Magnetic Module

[0122] 38: Contact Module

[0123] 38a: Contact plate

[0124] 40: Door limit switch mechanism

[0125] 41: Limiting strip

[0126] 41a: Combined pin

[0127] 42: Limiting bracket

[0128] 43: Stopper

[0129] 43b: Hook

[0130] 43c: Reset Guide

[0131] 43d: Flange

[0132] 44: Internal stent

[0133] 45: Torsion Spring

[0134] 46: Folded Sensor

[0135] 50: Drive mechanism

[0136] 51: Spindle driver

[0137] 51a: Shell tube

[0138] 51b: Moving tube

[0139] 51c: Boot tube

[0140] 52: Guide pulley

[0141] 52a: Ball element

[0142] 52c: Shaft

[0143] 53: Track Block

[0144] 53a: Block

[0145] 53b: Sliding groove

[0146] 53c: Fixed pin

[0147] 53d: Connecting protrusion

[0148] 54: Guide rail

[0149] 55: Stopper

[0150] 56a: Electric motor

[0151] 56b: Gearbox

[0152] 56c: Coupler

[0153] 56d: Brake

[0154] 57: Frame firing pin

[0155] 58: Frame latch

[0156] 59a: First cable

[0157] 59b: Second cable

[0158] 61: Frame side hinge bracket

[0159] 62: Door side hinge bracket

[0160] 63: Hinge arm

[0161] 64: First hinge pin

[0162] 64: Second hinge pin

[0163] 66: First hinge seat

[0164] 66a: First stent

[0165] 66b: First hinge axis

[0166] 66c: Sales

[0167] 66d: First hinge cover

[0168] 67: First hinge bearing socket

[0169] 68: Second hinge seat

[0170] 68a: Second stent

[0171] 68b: Second hinge bearing

[0172] 68c: Fasteners

[0173] 68d: Second hinge cover

[0174] 69: Second hinge axis

[0175] 76: First end

[0176] 76a: First end cap

[0177] 77: Second end

[0178] 77a: Second end cap

[0179] 78: Upper decorative piece

[0180] 79: Frame Open Switch

[0181] 100: Tailgate assembly Detailed Implementation

[0182] In the following, exemplary embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. Throughout the drawings, the same reference numerals may be used to denote the same or equivalent elements. Detailed descriptions of well-known techniques associated with this disclosure may be omitted to avoid unnecessarily obscuring the spirit of the disclosure.

[0183] Terms such as “first,” “second,” “A,” “B,” “(a),” and “(b)” are used to describe elements in exemplary embodiments of this disclosure. Such terms are intended solely to distinguish one element from another, and the inherent features, sequences, or order of the corresponding elements are not necessarily limited by such terms. Unless otherwise specified, the terms used herein, including technical or scientific terms, are intended to have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure pertains. Terms such as those defined in general dictionaries may be interpreted as having a meaning equivalent to that in the context of the relevant technical field.

[0184] refer to Figures 1 to 4 The vehicle may include a luggage compartment 3 located at the rear of the vehicle body 2. The luggage compartment 3 may be defined by a pair of opposing side walls 4 on both sides of the rear of the vehicle body 2 and a floor or base plate 5 located between the pair of side walls 4. Each side wall 4 may be vertically erected at the corresponding rear side of the vehicle body 2, and the pair of side walls 4 may be opposite each other in the width direction of the vehicle body 2. The pair of side walls 4 may define two sides of the luggage compartment 3, and the base plate 5 may define the bottom surface of the luggage compartment 3. Each side wall 4 may have an inner surface facing the luggage compartment 3, an outer surface facing the exterior of the vehicle body 2, and a rear end surface 4a facing the rear of the vehicle body 2.

[0185] refer to Figure 5 The passenger compartment 6, which includes the driver, may be located at the front of the vehicle body 2, and the luggage compartment 3 may be located at the rear of the passenger compartment 6.

[0186] refer to Figures 1 to 5 According to an exemplary embodiment of this disclosure, a vehicle tailgate assembly 100 may be mounted at the rear end of a vehicle body 2. The tailgate assembly 100 may include a tailgate 10 mounted at the rear end of a luggage compartment 3 for opening and closing. The tailgate 10 may include a main frame 11 aligned with a pair of sidewalls 4 and a floor 5 of the vehicle body 2. The main frame 11 may be pivotally connected to the rear bottom end of the vehicle body 2 via a pair of bottom hinges 14a and 14b.

[0187] The main frame 11 may be a U-shaped frame, including a bottom 11a aligned with the floor 5 of the vehicle body 2, a pair of side portions 11b and 11c extending from both ends of the bottom 11a, and an opening defined by the bottom 11a and the pair of side portions 11b and 11c. The pair of side portions 11b and 11c may include a first side portion 11b extending from a first end of the bottom 11a and a second side portion 11c extending from a second end of the bottom 11a. The main longitudinal axis of the bottom 11a may extend in the width direction of the vehicle body 2, and the longitudinal axis of the first side portion 11b may be parallel to the longitudinal axis of the second side portion 11c. The longitudinal axes of each side portion 11b and 11c may be perpendicular to the longitudinal axis of the bottom 11a.

[0188] Each side portion 11b and 11c can be aligned with the corresponding side wall in the side wall 4 of the vehicle body 2. The outer surfaces of a pair of side portions 11b and 11c can be aligned with the outer surfaces of a pair of side walls 4 of the vehicle body 2, respectively.

[0189] The main frame 11 is pivotally connected to the floor 5 or side wall 4 of the vehicle body 2 via a pair of bottom hinges 14a and 14b, and each bottom hinge 14a and 14b may have a horizontal axis HX extending in the width direction of the vehicle body 2. The two ends of the bottom 11a of the main frame 11 are pivotally connected to a pair of side walls 4 via a pair of bottom hinges 14a and 14b. The horizontal axis HX of each bottom hinge 14a and 14b may be parallel to or aligned with the longitudinal axis of the bottom 11a. When the main frame 11 pivots about the horizontal axis HX of the bottom hinges 14a and 14b, the main frame 11 of the tailgate 10 can move between a closed position (or upright position) and an open position (or horizontal position) at the rear end of the vehicle body 2. That is, the tailgate device 100 can operate in a first mode (pull-down mode). A pair of bottom hinges 14a and 14b may include a first bottom hinge 14a aligned with the bottom end of the first side 11b along its length, and a second bottom hinge 14b aligned with the bottom end of the second side 11c along its length. The first bottom hinge 14a may be mounted on a first end of the bottom 11a and the bottom end of the side wall 4 corresponding to the first side 11b, and the second bottom hinge 14b may be mounted on a second end of the bottom 11a and the bottom end of the side wall 4 corresponding to the second side 11c.

[0190] refer to Figure 1 The closed position (or upright position) can refer to the position where the main frame 11 of the tailgate 10 is folded upwards at the rear end of the vehicle body 2. When the tailgate 10 is in the closed position, the rear end of the luggage compartment 3 can be covered by the tailgate 10. (Reference) Figure 2The open position (or horizontal position) can refer to the position where the main frame 11 of the tailgate 10 is folded downwards towards the rear of the vehicle body 2. When the tailgate 10 is in the open position, the inner surface of the tailgate 10 is substantially flush with the floor 5 of the vehicle body 2. When the tailgate 10 is moved to the open position, the rear end of the luggage compartment 3 is not covered. When the main frame 11 of the tailgate 10 moves between the closed and open positions by pulling down using the bottom hinges 14a and 14b, the tailgate device 100 can operate in the first mode (pull-down mode). When the tailgate device 100 moves the main frame 11 of the tailgate 10 between the closed and open positions in the first mode, the tailgate 10 of the tailgate device 100 can function as a pull-down tailgate.

[0191] refer to Figure 1 Each of the side portions 11b and 11c of the main frame 11 can be substantially aligned with the rear end face 4a of the corresponding side wall 4 of the vehicle body 2. The distance between a pair of side portions 11b and 11c can be greater than or equal to the distance between a pair of side walls 4, thus increasing the opening width of the luggage compartment 3 defined between the side walls 4.

[0192] Specifically, the outer surfaces of each side portion 11b and 11c can be aligned with the outer surfaces of the corresponding side walls 4, such that the first parting line L1 between each side portion 11b and 11c of the main frame 11 and the corresponding side wall 4 of the vehicle body 2 can extend in the height direction of the vehicle body 2. The inner surfaces of each side portion 11b and 11c can be aligned with the inner surfaces of the corresponding side walls 4 or located on the rear end face 4a of the corresponding side wall 4, such that the second parting line L2 between each side portion 11b and 11c of the main frame 11 and the corresponding outer edges of the doors 12 and 13 can extend in the height direction of the vehicle body 2. The bottom hinges 14a and 14b can be aligned with the bottom ends of the corresponding side portions 11b and 11c, such that the third parting line L3 between the bottom ends of the side portions 11b and 11c of the main frame 11 and the corresponding bottom hinges 14a and 14b can extend in the width direction of the vehicle body 2. Therefore, the bottom 11a and the pair of sides 11b and 11c of the main frame 11 do not interfere with the luggage compartment 3, thus maximizing the width of the main frame 11 to correspond to the width of the vehicle body 2, and relatively increasing the width of the luggage compartment 3. In particular, when the tailgate 10 is opened in the first mode, the opening width (or opening area) of the luggage compartment 3 is maximized. With the tailgate 10 in the open position, the tailgate 10 can be horizontally aligned with the floor 5, allowing the tailgate 10 to be used for various purposes, such as a table and / or an extension of the floor 5.

[0193] The tailgate assembly 100 according to an exemplary embodiment of this disclosure may include a pair of frame latches 58 and a pair of frame strikers 57 disposed between the main frame 11 and the vehicle body 2. The pair of frame latches 58 may be respectively disposed on the side wall 4 of the vehicle body 2, and the pair of frame strikers 57 may be respectively disposed on the sides 11b and 11c of the main frame 11. The main frame 11 of the tailgate 10 can be locked to and unlocked from the side wall 4 of the vehicle body 2 by the pair of frame latches 58 and the pair of frame strikers 57. By configuring each frame latch 58 to lock the corresponding frame striker 57, the main frame 11 of the tailgate 10 can be held in a closed position, and by unlocking the corresponding frame striker 57 by each frame latch 58, movement of the main frame 11 of the tailgate 10 can be permitted.

[0194] refer to Figure 2 The frame latch 58 can be disposed on the corresponding side wall 4 of the vehicle body 2, and the frame striker 57 can be disposed on the corresponding sides 11b and 11c of the main frame 11. By disposing of the frame latch 58 on each side wall 4 of the vehicle body 2 and the frame striker 57 on each side 11b and 11c of the main frame 11, the frame latch 58 and the frame striker 57 can be compactly disposed between the corresponding sides of the side walls 4 of the vehicle body 2 and the sides 11b and 11c of the main frame 11, and the locking stiffness of the frame latch 58 and the frame striker 57 can be improved. The width of the side wall 4 of the vehicle body 2 and the width of each side 11b and 11c of the main frame 11 can be relatively reduced, and the width of the luggage compartment 3 can be relatively increased. Furthermore, when the tailgate 10 is closed, the frame latch 58 and the frame striker 57 are not exposed to the outside by utilizing the sides 11b and 11c of the main frame 11, thereby improving the appearance of the tailgate.

[0195] According to an example embodiment, the frame latch 58 may be a powered latch configured to lock and unlock the frame striker 57 using a motor. The frame latch 58 may be configured to switch between a partially locked state and a fully locked state using a motor. The fully locked state may refer to a state in which the frame latch 58 fully locks the frame striker 57, allowing the tailgate 10 to remain in the fully closed position. The fully locked state may be determined by a first locking sensor 101 disposed on the frame latch 58 (see [link to example]). Figure 41 The partially locked state can refer to the frame latch 58 partially locking the frame striker 57, so that the tailgate 10 can be held in a partially closed position. The partially locked state can be sensed by the second locking sensor 102 disposed on the frame latch 58 (see...). Figure 41 ) Sensing.

[0196] refer to Figure 2When the tailgate 10 is in the open position in the first mode, the tailgate 10 can be supported by a pair of cables 59a and 59b. Cables 59a and 59b can be connected between the corresponding sidewall 4 and the corresponding sides 11b and 11c of the main frame 11. (Reference) Figure 2 , Figure 5 and Figure 6 A pair of cables 59a and 59b may include a first cable 59a connected to a first side 11b of the main frame 11, and a second cable 59b connected to a second side 11c of the main frame 11.

[0197] According to an exemplary embodiment of the present disclosure, the tailgate 10 may include a pair of doors 12 and 13 pivotally connected to a main frame 11. The pair of doors 12 and 13 may be disposed in an opening in the main frame 11, and the pair of doors 12 and 13 may be pivotally connected to a pair of sides 11b and 11c of the main frame 11, respectively. Thus, the pair of doors 12 and 13 may be allowed to swing within the opening in the main frame 11 via side hinges 15a and 15b.

[0198] A pair of doors 12 and 13 may include a first door 12 pivotally connected to a first side portion 11b of the main frame 11 via a first side hinge 15a, and a second door 13 pivotally connected to a second side portion 11c of the main frame 11 via a second side hinge 15b. The first door 12 and the second door 13 may be configured to pivot simultaneously or independently of each other. For example, the first door 12 and the second door 13 may have the same size or different sizes.

[0199] Multiple first-side hinges 15a can pivotally connect the first door 12 and the first side 11b of the main frame 11, and multiple second-side hinges 15b can pivotally connect the second door 13 and the second side 11c of the main frame 11.

[0200] Each side hinge 15a and 15b may have a first vertical axis VX1 and a second vertical axis VX2 extending in the height direction of the vehicle body 2. The first vertical axis VX1 may be adjacent to the side wall 4 of the vehicle body 2, and the second vertical axis VX2 may be adjacent to each of the doors 12 and 13. The second vertical axis VX2 may be parallel to the first vertical axis VX1. According to an example embodiment, each side hinge 15a and 15b may be a double-acting hinge or a wide-angle hinge.

[0201] refer to Figure 1 and Figure 3Each side hinge 15a and 15b may include: a frame-side hinge bracket 61 mounted on each side 11b and 11c of the main frame 11; a door-side hinge bracket 62 mounted on each door 12 and 13; and a hinge arm 63 pivotally connected to the frame-side hinge bracket 61 and the door-side hinge bracket 62. A first end of the hinge arm 63 may be pivotally connected to the frame-side hinge bracket 61 via a first hinge pin 64, and a second end of the hinge arm 63 may be pivotally connected to the door-side hinge bracket 62 via a second hinge pin 65. A first vertical axis VX1 may extend along the length direction axis of the first hinge pin 64, and a second vertical axis VX2 may extend along the length direction axis of the second hinge pin 65.

[0202] When the first door 12 pivots about the first vertical axis VX1 of the first side hinge 15a, the first door 12 can be in the closed position (see Figure 1 ) and the first open position (see Figure 3 Move between ( ). Reference Figure 1 The closed position can refer to the position where the main frame 11 of the tailgate 10 is in the closed position, and the first door 12 is perpendicular to the side wall 4 connected to it. When the first door 12 is in the closed position, a portion of the opening in the main frame 11 can be covered by the first door 12. (Reference) Figure 3 The first open position can refer to the position where the main frame 11 of the tailgate 10 is in the closed position and the first door 12 is aligned with the side wall 4 in the length direction of the vehicle body 2 behind the side wall 4 attached to it. When the first door 12 is in the first open position, the first door 12 can be opened from a portion of the opening in the main frame 11 at a first angle (e.g., a maximum of 90°).

[0203] When the second door 13 pivots about the first vertical axis VX1 of the second side hinge 15b, the second door 13 can be in the closed position (see Figure 1 ) and the first open position (see Figure 3 Move between ( ). Reference Figure 1 The closed position can refer to the position where the main frame 11 of the tailgate 10 is closed, and the second door 13 is perpendicular to the side wall 4 connected to it. When the second door 13 is in the closed position, the remaining portion of the opening in the main frame 11 can be covered by the second door 13. (Reference) Figure 3 The first open position can refer to the position where the main frame 11 of the tailgate 10 is in the closed position, and the second door 13 is aligned with the side wall 4 in the length direction of the vehicle body 2 behind the side wall 4 attached to it. When the second door 13 is in the first open position, the second door 13 can be opened from another part of the opening of the main frame 11 at a first angle (e.g., a maximum of 90°).

[0204] The tailgate assembly 100 can operate in a second mode (first swing mode) by pivoting the first door 12 on the first vertical axis VX1 of the first side hinge 15a to move between a closed position and a first open position, and by pivoting the second door 13 on the first vertical axis VX1 of the second side hinge 15b to move between a closed position and a first open position.

[0205] When the first door 12 pivots about the first vertical axis VX1 and the second vertical axis VX2 of the first side hinge 15a, the first door 12 can be in the first open position (see Figure 3 ) and the second open position (see Figure 4 Move between ( ). Reference Figure 4 The second open position can refer to the position where the main frame 11 of the tailgate 10 is in the closed position and the first door 12 is folded toward the outer surface of the side wall 4 to which it is attached, such that the first door 12 overlaps with the outer surface of the side wall 4 to which it is attached. Specifically, the first door 12 in the second open position can be substantially parallel to the side wall 4 to which it is attached. When the first door 12 is in the second open position, the first door 12 can open from a portion of the opening in the main frame 11 at a second angle (e.g., a maximum of 270°). The second angle can refer to the angle that prevents the first door 12 from interfering with the wheel housing of the side wall 4. The first door 12 can move from the closed position to the first open position when it pivots about the first vertical axis VX1 of the first side hinge 15a. Thereafter, the hinge arm 63 of the first side hinge 15a can pivot once toward the outside of the vehicle body 2 about the first vertical axis VX1. Then, when the first door 12 pivots twice around the second vertical axis VX2 of the first side hinge 15a, the first door 12 can move from the first open position to the second open position.

[0206] When the second door 13 pivots about the first vertical axis VX1 and the second vertical axis VX2 of the second side hinge 15b, the second door 13 can be in the first open position (see Figure 3 ) and the second open position (see Figure 4 Move between ( ). Reference Figure 4The second open position can refer to the position where the main frame 11 of the tailgate 10 is in the closed position, and the second door 13 is folded toward the outer surface of the side wall 4 connected to it, such that the second door 13 overlaps with the outer surface of the side wall 4 connected to it. Specifically, the second door 13 in the second open position can be substantially parallel to the side wall 4 connected to it. When the second door 13 is in the second open position, the second door 13 can open from another portion of the opening in the main frame 11 at a second angle (e.g., a maximum of 270°). The second angle can refer to the angle that prevents the second door 13 from interfering with the wheel arches of the side wall 4. When the second door 13 pivots about the first vertical axis VX1 of the second side hinge 15b, the second door 13 can move from the closed position to the first open position. Thereafter, the hinge arm 63 of the second side hinge 15b can pivot once outward about the first vertical axis VX1. Then, when the second door 13 pivots a second time about the second vertical axis VX2 of the second side hinge 15b, the second door 13 can move from the first open position to the second open position.

[0207] The tailgate assembly 100 can operate in a third mode (second swing mode) by pivoting the first door 12 on the first vertical axis VX1 and the second vertical axis VX2 of the first side hinge 15a to move between a first open position and a second open position, and by pivoting the second door 13 on the first vertical axis VX1 and the second vertical axis VX2 of the second side hinge 15b to move between a first open position and a second open position.

[0208] Each side hinge 15a and 15b can utilize two vertical axes VX1 and VX2, allowing each door 12 and 13 to move along an elliptical swing path. Therefore, the swing paths of each door 12 and 13 can be relatively compact, facilitating opening and closing of doors 12 and 13 in confined spaces. When each door 12 and 13 moves to the second open position, each door 12 and 13 can overlap with the outer surface of the corresponding side wall 4, and each door 12 and 13 can be located outside the rear of the vehicle body 2, thereby improving the space utilization of the rear of the vehicle.

[0209] As described above, when the tailgate device 100 operates in the second mode (first swing mode) and the third mode (second swing mode), the tailgate 10 of the tailgate device 100 can function as a split tailgate.

[0210] refer to Figure 1 The vehicle body 2 may have a rear bumper 7 located below the floor 5, and a pair of main lights 17 may be mounted on the rear bumper 7. Each main light 17 may provide signals for vehicle stop, direction change, lane change, or any combination thereof.

[0211] refer to Figure 2A pair of auxiliary lights 18 may be disposed on the rear end face 4a of a pair of sidewalls 4. Since the main light 17 of the rear bumper 7 can be covered by the tailgate 10 when the tailgate 10 is moved to the open position (or horizontal position) in the first mode, the pair of auxiliary lights 18 can provide signals for vehicle stop, direction change, lane change, etc. or any combination thereof.

[0212] Figures 1 to 5 A pickup truck is shown with a tailgate device 100 according to an exemplary embodiment of the present disclosure. However, the tailgate device 100 according to an exemplary embodiment of the present disclosure is not limited to pickup trucks, but can also be applied to the luggage compartment 3 of various types of vehicles such as sport utility vehicles (SUVs) and / or vans.

[0213] refer to Figure 7 The bottom 11a may include a bottom member 21a having a downwardly opening cavity and a reinforcing member 21b having an upwardly opening cavity. The bottom member 21a and the reinforcing member 21b may extend in the length direction of the bottom 11a.

[0214] refer to Figure 8 The bottom member 21a may have a downwardly opening channel-shaped cross-section, and the cavity of the bottom member 21a may extend along the length of the bottom member 21a. The reinforcing member 21b may have an upwardly opening channel-shaped cross-section, and the cavity of the reinforcing member 21b may extend along the length of the bottom member 11a. The reinforcing member 21b may be fixed to the bottom member 21a. (Reference) Figure 10 The upper walls of the bottom member 21a and the upper walls of the reinforcing member 21b can be fixed by a first weld S1. For example, the first weld S1 can be a spot weld. The rear walls of the bottom member 21a and the rear walls of the reinforcing member 21b can be fixed by a second weld S2. For example, the second weld S2 can be a plug weld or a groove weld that fixes the rear walls of the bottom member 21a and the rear walls of the reinforcing member 21b through holes or grooves 21c in the bottom member 21a. The reinforcing member 21b can be fixed to the top and rear walls of the bottom member 21a within the cavity of the bottom member 21a, thereby increasing the rigidity of the bottom 11a. The bottom member 21a and the reinforcing member 21b can form a space through which a wire harness or wire W can extend and pass.

[0215] refer to Figure 7 The first side portion 11b may include a first side member 22a and a first side molding 22b attached to the outer surface of the first side member 22a. The first side member 22a may extend in the length direction of the first side portion 11b, and the first side molding 22b may also extend in the length direction of the first side portion 11b. The first side member 22a may be covered by the first side molding 22b, thereby improving the appearance of the first side portion 11b. The first side molding 22b may have a portion that can accommodate the first side hinge 15a (corresponding to...). Figure 12 The frame-side hinge bracket 61) has an opening 22d, and a portion of the first side hinge 15a can be attached to the first side member 22a. According to an example embodiment, portions of both side hinges 15a can be attached to the first side member 22a, and the first side molding 22b may have two openings 22d that can respectively accommodate portions of the two first side hinges 15a. The first side member 22a may have a cavity defined therein, and an auxiliary lamp (not shown) can be embedded in the cavity of the first side member 22a. The first side member 22a may have an opening 22c communicating with its cavity. The first side molding 22b may have an opening 22f aligned with the opening 22c of the first side member 22a. The auxiliary lamp embedded in the cavity of the first side member 22a is exposed to the outside through the opening 22c of the first side member 22a and the opening 22f of the first side molding 22b.

[0216] refer to Figure 7 The second side portion 11c may include a second side member 23a and a second side molding member 23b attached to the outer surface of the second side member 23a. The second side member 23a may extend in the length direction of the second side portion 11c, and the second side molding member 23b may also extend in the length direction of the second side portion 11c. The second side member 23a may be covered by the second side molding member 23b, thereby improving the appearance of the second side portion 11c. The second side molding member 23b may have a portion that can accommodate the second side hinge 15b (corresponding to...). Figure 12 The frame-side hinge bracket 61) has an opening 23d, and a portion of the second side hinge 15b can be attached to the second side member 23a. According to an example embodiment, portions of both second side hinges 15b can be attached to the second side member 23a, and the second side molding 23b may have two openings 23d respectively accommodating portions of the two side hinges 15b. The second side member 23a may have a cavity defined therein, and an auxiliary lamp (not shown) can be embedded in the cavity of the second side member 23a. The second side member 23a may have an opening 23c communicating with its cavity. The second side molding 23b may have an opening 23f aligned with the opening 23c of the second side member 23a. The auxiliary lamp embedded in the cavity of the second side member 23a is exposed to the outside through the opening 23c of the second side member 23a and the opening 23f of the second side molding 23b.

[0217] refer to Figure 3 and Figure 8 The first side member 22a may have a recess 22k provided on its upper part, and the second side member 23a may have a recess 23k provided on its upper part. (See reference) Figure 3The frame striker 57 can be installed in the recesses 22k and 23k of the corresponding side members 22a and 23a, respectively. When the doors 12 and 13 are opened and closed, the recesses 22k and 23k prevent the doors 12 and 13 from interfering with the frame striker 57.

[0218] refer to Figure 6 and Figure 7 The main frame 11 may include a pair of connecting members 24a and 25a that connect a pair of sides 11b and 11c to the two ends of the bottom 11a, respectively. The pair of connecting members 24a and 25a may include a first connecting member 24a connecting the first side 11b and the first end of the bottom 11a, and a second connecting member 25a connecting the second side 11c and the second end of the bottom 11a.

[0219] The first connecting member 24a may be configured to connect the bottom member 21a of the bottom 11a and the first side member 22a of the first side portion 11b. The first connecting member 24a may be inclined at a predetermined angle between the bottom end of the first side portion 11b and the first end of the bottom 11a, and the first connecting member 24a may have a plurality of ribs 31c disposed therein, thereby increasing the rigidity of the first connecting member 24a.

[0220] The first connecting member 24a may have an upper receiving portion 31a that can accommodate the lower end portion 22h of the first side member 22a and a lower receiving portion 31b that can accommodate the first end portion of the bottom member 21a. The upper receiving portion 31a of the first connecting member 24a may have a shape and size corresponding to the shape and size of the lower end portion 22h of the first side member 22a, and the lower receiving portion 31b of the first connecting member 24a may have a shape and size corresponding to the shape and size of the first end portion of the bottom member 21a. The upper receiving portion 31a and the lower end portion 22h of the first side member 22a may be joined by a plurality of fasteners, and the lower receiving portion 31b and the first end portion of the bottom member 21a may be joined by a plurality of fasteners.

[0221] The first connecting member 24a may be made of a material different from that of the first side member 22a and the bottom member 21a. The stiffness of the first connecting member 24a may be similar to that of the first side member 22a and the bottom member 21a, and the weight of the first connecting member 24a may be less than that of the first side member 22a and the bottom member 21a. According to an example embodiment, the first connecting member 24a may be made of aluminum, and the first side member 22a and the bottom member 21a may be made of steel. The first connecting member 24a may be an aluminum die-cast component manufactured by a die-casting method. The first connecting member 24a, the first side member 22a, and the bottom member 21a, made of different materials, may be securely connected by fasteners.

[0222] The second connecting member 25a may be configured to connect the bottom member 21a of the bottom 11a and the second side member 23a of the second side portion 11c. The second connecting member 25a may be inclined at a predetermined angle between the bottom end of the second side portion 11c and the second end of the bottom 11a, and the second connecting member 25a may have a plurality of ribs 32c disposed therein, thereby increasing the rigidity of the second connecting member 25a.

[0223] The second connecting member 25a may include an upper receiving portion 32a that can accommodate the lower end portion 23h of the second side member 23a and a lower receiving portion 32b that can accommodate the second end portion of the bottom member 21a. The upper receiving portion 32a of the second connecting member 25a may have a shape and size corresponding to the shape and size of the lower end portion 23h of the second side member 23a, and the lower receiving portion 32b of the second connecting member 25a may have a shape and size corresponding to the shape and size of the second end portion of the bottom member 21a. The upper receiving portion 32a of the second connecting member 25a and the lower end portion 23h of the second side member 23a may be engaged by a plurality of fasteners, and the lower receiving portion 32b of the second connecting member 25a and the second end portion of the bottom member 21a may be engaged by a plurality of fasteners.

[0224] The second connecting member 25a may be made of a material different from that of the second side member 23a and the bottom member 21a. The stiffness of the second connecting member 25a may be similar to that of the second side member 23a and the bottom member 21a, and the weight of the second connecting member 25a may be less than that of the second side member 23a and the bottom member 21a. According to an example embodiment, the second connecting member 25a may be made of aluminum, while the second side member 23a and the bottom member 21a may be made of steel. The second connecting member 25a may be an aluminum die-cast component manufactured by a die-casting method. The second connecting member 25a, the second side member 23a, and the bottom member 21a, made of different materials, may be securely connected by fasteners.

[0225] The first connecting member 24a may have an upwardly opening cavity, and the cavity of the first connecting member 24a may communicate with the cavities of the first side member 22a and the bottom member 21a. The second connecting member 25a may have an upwardly opening cavity, and the cavity of the second connecting member 25a may communicate with the cavities of the second side member 23a and the bottom member 21a. Therefore, the cavities of the first side portion 11b, the bottom portion 11a, and the second side portion 11c may communicate with each other, allowing wires to extend through the cavities of the first side portion 11b, the bottom portion 11a, and the second side portion 11c, and the wires may be electrically connected to auxiliary lights embedded in the first side member 22a and the second side member 23a. That is, the main frame 11 may include wiring paths defined therein.

[0226] The main frame 11 may include a pair of cover members 24b and 25b that respectively cover a pair of connecting members 24a and 25a. The pair of cover members 24b and 25b may include a first cover member 24b covering the top of the first connecting member 24a and a second cover member 25b covering the top of the second connecting member 25a.

[0227] refer to Figure 8 The cover members 24b and 25b are capable of extending obliquely at an angle corresponding to the angle of inclination of the corresponding connecting members 24a and 25a. Each cover member 24b and 25b may include an upper protrusion 33 projecting toward a corresponding side member of the side members 22a and 23a, and a lower protrusion 34 extending toward a corresponding end of the bottom member 21a. Each side member 22a and 23a may have a hole 35 for receiving the upper protrusion 33, and each end of the bottom member 21a may have a hole 36 for receiving the lower protrusion 34. Therefore, the upper protrusion 33 of each cover member 24b and 25b can be inserted into the hole 35 of the corresponding side member of the side members 22a and 23a, and the lower protrusion 34 of each cover member 24b and 25b can be inserted into the hole 36 of the corresponding end of the bottom member 21a, such that the cover members 24b and 25b can be temporarily engaged between the corresponding side members 22a and 23a and the corresponding end of the bottom member 21a. The upper and lower ends of the temporarily joined cover members 24b and 25b can be fixed to the corresponding ends of the side members 22a and 23a and the bottom member 21a by means of CO2 welding or the like.

[0228] refer to Figure 10 Doors 12 and 13 may have recesses 12c and 13c respectively provided at their lower ends. When doors 12 and 13 are closed, the bottom 11a of the main frame 11 may be accommodated in the recesses 12c and 13c of doors 12 and 13, so that the bottom 11a of the main frame 11 may be covered by the lower ends of doors 12 and 13.

[0229] According to an exemplary embodiment of the present disclosure, the tailgate device 100 may include a pair of lower latches 109a and 109b respectively disposed between the lower ends of a pair of doors 12 and 13 and the main frame 11 (see...). Figure 41A second door 12 and a pair of lower striking pins 19a and 19b are provided. A first lower latch 109a may be provided at the lower end of the first door 12, and the first lower striking pin 19a may be provided at the bottom 11a of the main frame 11. The first lower latch 109a can lock the first lower striking pin 19a, so that the first door 12 can be held in the closed position, and the first lower latch 109a can unlock the first lower striking pin 19a, so that the first door 12 can be opened. A second lower latch 109b may be provided at the lower end of the second door 13, and the second lower striking pin 19b may be provided at the bottom 11a of the main frame 11. The second lower latch 109b can lock the second lower striking pin 19b, so that the second door 13 can be held in the closed position, and the second lower latch 109b can unlock the second lower striking pin 19b, so that the second door 13 can be opened. Reference Figure 6 and Figure 7 The first lower striker 19a and the second lower striker 19b are symmetrical about the center of the bottom 11a of the main frame 11.

[0230] The first bottom hinge 14a may include a first hinge mount 66 disposed on the vehicle body 2 and a first hinge socket 67 disposed on the main frame 11.

[0231] refer to Figure 13 The first hinge seat 66 may include: a corresponding side wall 4 fixed to the vehicle body 2 (corresponding to...) Figure 2 The first bracket 66a is located at the bottom end of the rear end face 4a of the left side wall; the first hinge shaft 66b is rotatably mounted on the first bracket 66a via a pin 66c; and the first hinge cover 66d covers the first bracket 66a. The first hinge shaft 66b may have a hexahedral shape.

[0232] refer to Figure 14 The first hinge recess 67 may be disposed on the first connecting member 24a of the main frame 11. The first hinge recess 67 may be configured to receive the first hinge shaft 66b of the first hinge seat 66. The first hinge recess 67 may be a hexahedral recess having a shape and size corresponding to the shape and size of the first hinge shaft 66b.

[0233] The longitudinal axis of the first hinge shaft 66b and the longitudinal axis of the first hinge socket 67 can be aligned with the horizontal axis HX (see [reference]). Figure 2 ).

[0234] The second bottom hinge 14b may include a second hinge seat 68 disposed on the vehicle body 2 and a second hinge shaft 69 disposed on the main frame 11.

[0235] refer to Figure 15 The second hinge seat 68 may include: a corresponding side wall 4 fixed to the vehicle body 2 (corresponding to...) Figure 2The second bracket 68a is located at the bottom end of the rear end face 4a of the right side wall; the second hinge socket 68b is fixed to the second bracket 68a by fastener 68c; and the second hinge cover 68d covers the second bracket 68a. The second hinge socket 68b may have a hollow cylindrical shape with an opening 68f.

[0236] refer to Figure 16 The second hinge shaft 69 may be disposed on the second connecting member 25a of the main frame 11. The second hinge shaft 69 may be accommodated in the second hinge socket 68b of the second hinge seat 68. The second hinge shaft 69 may have a solid cylindrical shape, the outer diameter of which is smaller than the inner diameter of the second hinge socket 68b, and the second hinge shaft 69 may have a pair of opposing flat surfaces.

[0237] The longitudinal axis of the second hinge bearing 68b and the longitudinal axis of the second hinge shaft 69 can be aligned with the horizontal axis HX (see...). Figure 2 ).

[0238] refer to Figure 11 Of the two first-side hinges 15a, the upper first-side hinge 15a can be connected to the first-side member 22a, and the lower first-side hinge 15a can be connected to the upper receiving portion 31a of the first connecting member 24a. (See reference) Figure 21 The frame-side hinge bracket 61 of the upper first side hinge 15a can be fixed to the first side member 22a of the first side portion 11b by fasteners. (See reference) Figure 12 The frame-side hinge bracket 61 of the lower first side hinge 15a can be fixed to the lower end 22h of the first side member 22a together with the upper receiving portion 31a of the first connecting member 24a by fastener 61a.

[0239] refer to Figure 11 Of the two second-side hinges 15b, the upper second-side hinge 15b can be connected to the second-side member 23a, and the lower second-side hinge 15b can be connected to the upper receiving portion 32a of the second connecting member 25a. (See reference) Figure 21 The frame-side hinge bracket 61 of the upper second side hinge 15b can be fixed to the second side member 23a of the second side portion 11c by fasteners. (See reference) Figure 12 The frame-side hinge bracket 61 of the lower second side hinge 15b can be fixed to the lower end 23h of the second side member 23a together with the upper receiving portion 32a of the second connecting member 25a by fastener 61a.

[0240] The first door 12 may include an inner surface facing the luggage compartment 3 and an outer surface facing the exterior of the vehicle body 2. The inner surface of the first door 12 may face the front of the vehicle, and the outer surface of the first door 12 may face the rear of the vehicle. (Reference) Figure 6 and Figure 18According to an exemplary embodiment of the present disclosure, the tailgate 10 may include a first upper trim 26a attached to the upper surface of the first door 12, and a first inner trim 26b detachably attached to the inner surface of the first door 12. The first upper trim 26a may have a first door handle 28a, and the first door handle 28a may have a first handle slot 28b. The first handle slot 28b may be formed between the first door handle 28a and the first upper trim 26a.

[0241] The second door 13 may include an inner surface facing the luggage compartment 3 and an outer surface facing the exterior of the vehicle body 2. The inner surface of the second door 13 may face the front of the vehicle, and the outer surface of the second door 13 may face the rear of the vehicle. (Reference) Figure 6 and Figure 18 According to an exemplary embodiment of the present disclosure, the tailgate 10 may include a second upper trim 27a attached to the upper surface of the second door 13, and a second inner trim 27b detachably attached to the inner surface of the second door 13. The second upper trim 27a may have a second door handle 29a, and the second door handle 29a may have a second handle slot 29b. The second handle slot 29b may be formed between the second door handle 29a and the second upper trim 27a.

[0242] refer to Figure 18 A first door opening switch 28c may be disposed on a first door handle 28a, and the first door opening switch 28c may be electrically connected to a first lower latch. A second door opening switch 29c may be disposed on a second door handle 29a, and the second door opening switch 29c may be electrically connected to a second lower latch.

[0243] The first door 12 may include a first hinge-side edge that is hingedly connected to a first side portion 11b of the main frame 11 via a first side hinge 15a, and a first door-side edge facing the second door 13. The second door 13 may include a second hinge-side edge that is hingedly connected to a second side portion 11c of the main frame 11 via a second side hinge 15b, and a second door-side edge facing the first door 12. (Reference) Figure 9 When the first door 12 and the second door 13 are closed, the first side edge of the first door 12 and the second side edge of the second door 13 are spaced apart by a first gap t1, and the first side edge of the first upper decorative member 26a and the second side edge of the second upper decorative member 27a are spaced apart by a second gap t2. When the first door 12 and the second door 13 are opened individually or simultaneously, the first gap t1 allows the first door 12 and the second door 13 to not interfere with each other. The second gap t2 may be larger than the first gap t1.

[0244] According to an exemplary embodiment of this disclosure, the tailgate device 100 may further include a magnetic module 37 and a contact module 38 disposed between opposite edges of the first door 12 and the second door 13. The magnetic module 37 may be configured to generate and block magnetic fields. When the magnetic module 37 generates a magnetic field, the contact module 38 can be magnetically attached to the magnetic module 37, thus locking the contact module 38. When the magnetic module 37 blocks the magnetic field, the contact module 38 may not be attached to the magnetic module 37, thus unlocking the contact module 38. That is, the magnetic module 37 may be configured to lock and unlock the contact module 38 by generating and blocking magnetic fields, and the first door 12 and the second door 13 may be mutually locked and unlocked using the magnetic module 37 and the contact module 38.

[0245] According to an example embodiment, the magnetic module 37 may be disposed at the edge of the first door 12, and the contact module 38 may be disposed at the edge of the second door 13. According to another example embodiment, the magnetic module 37 may be disposed at the edge of the second door 13, and the contact module 38 may be disposed at the edge of the first door 12.

[0246] The magnetic module 37 can be electrically connected to the first door opening switch 28c and the second door opening switch 29c. When the magnetic module 37 is turned on, it generates a magnetic field, and the contact module 38 can be magnetically attached to it, thus locking the contact module 38. When the magnetic module 37 is turned off, it blocks the magnetic field, and the contact module 38 can be unattached, allowing the magnetic module 37 to unlock it.

[0247] According to an example embodiment, the magnetic module 37 may be a switchable magnetic device including a fixed magnet, a rotating magnet rotatable relative to the fixed magnet, and an actuator for rotating the rotating magnet.

[0248] According to another example embodiment, the magnetic module 37 may be an electromagnet.

[0249] refer to Figure 17A magnetic module 37 may be mounted on a first door side edge of a first door 12, and a contact module 38 may be mounted on a second door side edge of a second door 13. The contact module 38 may include a contact plate 38a made of magnetic material, and the contact plate 38a may be configured to be movable relative to the magnetic module 37. The contact plate 38a may be configured to move between an attachment position where the contact plate 38a is attached to the magnetic module 37 and a disengagement position where the contact plate 38a is disengaged from the magnetic module 37 and spaced apart from the magnetic module 37 by a first gap t1 or a larger gap. The contact module 38 may further include a guide pin 38b configured to guide the movement of the contact plate 38a. The guide pin 38b may be fixed to the second door 13, and the contact plate 38a may be configured to move along the guide pin 38b. The contact module 38 may further include a biasing member (not shown) that allows the contact plate 38a to be biased such that the contact plate 38a is spaced apart from the magnetic module 37 by a first gap t1 or a larger gap. The biasing member may be a helical spring disposed around the guide pin 38b. When the magnetic module 37 blocks the magnetic field, the contact plate 38a can be biased by the biasing member to be spaced apart from the magnetic module 37 by a first gap t1 or a larger gap.

[0250] When the magnetic module 37 is turned on, the magnetic module 37 can generate a magnetic field, and the contact module 38 can be attached to the magnetic module 37 by magnetic force. Therefore, the first door 12 and the second door 13 can be locked to each other, and the first door 12 and the second door 13 can be kept in the closed position.

[0251] When the magnetic module 37 is disconnected, the magnetic module 38 can block the magnetic field, and the contact module 38 can be unattached to the magnetic module 37, thus the first door 12 and the second door 13 can be unlocked from each other. In particular, the contact plate 38a of the contact module 38 can be biased by a biasing member to be spaced apart from the magnetic module 37 by a first gap t1 or a larger gap, so that the rotational clearance between the first door 12 and the second door 13 can be sufficiently ensured, and the first door 12 and the second door 13 can be opened individually or simultaneously without interfering with each other.

[0252] refer to Figure 6 According to an exemplary embodiment of the present disclosure, the tailgate device 100 may include a pair of door check mechanisms 40 respectively connected to a pair of sides 11b and 11c of the main frame 11. The door check mechanisms 40 may be configured to hold corresponding doors 12 and 13 in predetermined positions when doors 12 and 13 are opened and closed, respectively. Specifically, the door check mechanisms 40 may be configured to hold doors 12 and 13 in a first open position or allow doors 12 and 13 to move to a second open position when doors 12 and 13 are opened.

[0253] refer to Figure 11Each door limiter mechanism 40 may include: a check strip 41 pivotally connected to each side 11b and 11c of the main frame 11; and a stop 43 to which the check strip 41 can be releasably coupled.

[0254] The limiting strip 41 is pivotally mounted to the limiting bracket 42 via a pivot pin 42a, and the limiting bracket 42 is secured to the respective side members 22a and 23a of the sides 11b and 11c of the main frame 11 via fasteners. The limiting strip 41 can be configured in an extended position where the limiting strip 41 extends outward from the limiting bracket 42 toward the outside of the vehicle body 2 (see [reference]). Figure 23 and Figure 27 The limiting strip 41 is folded to the folded position of the limiting bracket 42 (see...). Figure 28 The limit bar 41 can move between the following positions: When the limit bar 41 is in the unfolded position, it can unfold at a predetermined angle relative to the limit bracket 42, and when the limit bar 41 is in the folded position, it can overlap with the limit bracket 42. The limit bar 41 can be biased in the unfolded position by a torsion spring 45, which can be disposed around the pivot pin 42a. Each door 12 and 13 may have a side opening 91 that opens to a corresponding side in the sides 11b and 11c of the main frame 11. When the doors 12 and 13 move between the closed position, the first open position, and the second open position, the limit bar 41 can be received inside or detached from the interior of each door 12 and 13 through the side opening 91. (See reference) Figure 21 When doors 12 and 13 are in the closed position, the limiting strip 41 can be completely accommodated inside doors 12 and 13. (See reference) Figures 22 to 26 When each door 12 and 13 is moving from the closed position to the first open position, the limiting strip 41 can disengage from the interior portion of each door 12 and 13. (See reference) Figure 27 and Figure 28 When each door 12 and 13 is in the second open position, the limiting strip 41 can be completely disengaged from the interior of each door 12 and 13.

[0255] The limiting strip 41 is flexible and may have a pair of sidewalls 41f disposed at its two edges. The limiting strip 41 may have a first end pivotally mounted to the limiting bracket 42 and a second end opposite to the first end. The limiting strip 41 may have a connecting pin 41a disposed at the second end, and the connecting pin 41a may connect the pair of sidewalls 41f.

[0256] refer to Figure 21The stopper 43 can be mounted inside each of the doors 12 and 13 via an inner bracket 44. The inner bracket 44 may include a flange 44b that is fixed to the inner surface of each of the doors 12 and 13 via a plurality of fasteners, and a mounting wall 44a located opposite to the flange 44b.

[0257] refer to Figure 20 The stopper 43 may include a body 43a and a hook 43b disposed on the body 43a. The body 43a may have two flanges 43d, and the two flanges 43d may be secured to the mounting wall 44a of the inner bracket 44 via a plurality of fasteners. The hook 43b may have a cavity capable of receiving a connecting pin 41a of the limiting strip 41, and the connecting pin 41a of the limiting strip 41 may engage with or disengage from the hook 43b of the stopper 43. The hook 43b may be elastically deformable when the connecting pin 41a of the limiting strip 41 engages with or disengages from the hook 43b. The stopper 43 may have a reset guide 43c extending from the hook 43b toward a corresponding side hinge of the side hinges 15a and 15b, and the reset guide 43c may be bendable. The reset guide 43c may be configured to guide the connecting pin 41a of the limiting strip 41 to the hook 43b of the stopper 43. The stop 43 may have a pair of guide protrusions 43f projecting from both sides of the body 43a, and the pair of guide protrusions 43f may be configured to guide a pair of sidewalls 41f of the limiting strip 41. When the respective doors 12 and 13 move to the first open position, the pair of guide protrusions 43f may guide the pair of sidewalls 41f of the limiting strip 41 to move the engaging pin 41a of the limiting strip 41 to the hook 43b of the stop 43.

[0258] refer to Figure 28 Each sidewall 4 of the vehicle body 2 may have a recess 4c that is recessed from the inner surface of the sidewall 4 to the outer surface of the sidewall 4, and the recess 4c of the sidewall 4 may be aligned with the limiting bracket 42. When the limiting strip 41 is in the folded position, the recess 4c may be configured to receive the limiting strip 41. When the limiting strip 41, which is completely disengaged from each of the doors 12 and 13, is folded by the user in a direction opposite to the direction in which the limiting strip 41 is biased by the torsion spring 45, the limiting strip 41 may be folded toward the limiting bracket 42. Therefore, the limiting strip 41 may be folded toward the inner surface of the corresponding sidewall 4, so that the limiting strip 41 may be received in the recess 4c of the sidewall 4.

[0259] The door limiter mechanism 40 may further include a retainer configured to hold the limit strip 41 in a folded position, and the retainer may be configured to hold the limit strip 41 in a folded state to the limit bracket 42. The limit strip 41, which has completely disengaged from the respective doors 12 and 13, may be held by the retainer in a state received in the recess 4c of the corresponding sidewall 4.

[0260] A folding sensor 46 can be mounted on the limiting bracket 42 and configured to detect when the limiting strip 41 is in a folded position. Therefore, the folding sensor 46 can detect the folding state of the limiting strip 41 relative to the limiting bracket 42. When the limiting strip 41 is in the folded position, it is accommodated in the recess 4c of the corresponding side wall 4. In this state, when the main frame 11 of the tailgate 10 is opened in the first mode, there is a risk of tailgate 10 malfunction and / or damage to the limiting strip 41. The folding sensor 46 can detect that the limiting strip 41 is in the folded position, and the controller 150 can determine, based on the detection result of the folding sensor 46, that the limiting strip 41 is accommodated in the recess 4c of the side wall 4. Therefore, the controller 150 can prevent the tailgate 10 from closing, thereby preventing damage to the limiting strip 41. When the user moves the limiting strip 41 to the unfolded position, the limiting strip 41 can disengage from the recess 4c of the side wall 4. When each door 12 and 13 moves from the second open position to the first open position, the limiting strip 41 can be accommodated inside each door 12 and 13 through the side openings 91 of each door 12 and 13.

[0261] refer to Figure 21 When each door 12 and 13 is in the closed position, the limiting strip 41 can be fully accommodated inside each door 12 and 13 through the side openings 91 of each door 12 and 13. When the limiting strip 41 accommodated inside each door 12 and 13 contacts the stopper 43, the limiting strip 41 can be parallel to each door 12 and 13.

[0262] refer to Figure 22 When each door 12 and 13 is opened, the hinge arms 63 of each door 12 and 13 and each side hinge 15a and 15b can pivot about the vertical axis VX1, and the limiting bar 41 of the door limiter mechanism 40 can pivot in the direction in which each door 12 and 13 is opened, so that the limiting bar 41 can be released from each door 12 and 13 through the side opening 91.

[0263] refer to Figure 23 When each door 12 and 13 is in the first open position, the engagement pin 41a of the limit bar 41 can engage with the hook 43b of the stop 43, so that the limit bar 41 can engage with the stop 43, and thus each door 12 and 13 can remain in the first open position.

[0264] refer to Figure 24 When each door 12 and 13 pivots from the first open position to the closed position at a predetermined angle, the engagement pin 41a of the limit bar 41 can be separated from the hook 43b of the stop 43, so that the limit bar 41 can be released from the stop 43.

[0265] refer to Figure 25When the limiting strip 41 pivots slightly toward the closed position of each door 12 and 13, the limiting strip 41 can be disengaged from each door 12 and 13 through the side openings 91 of each door 12 and 13.

[0266] refer to Figure 26 When each door 12 and 13 moves back to the first open position, the engagement pin 41a of the limit bar 41 can be completely separated from the hook 43b of the stop 43, so that the limit bar 41 can be completely released from the stop 43.

[0267] refer to Figure 27 When the limit bar 41 is fully released from the stopper 43, each door 12 and 13 is allowed to move from the first open position to the second open position, and the limit bar 41 can be completely disengaged from each door 12 and 13.

[0268] refer to Figure 28 When the limiting strip 41 is folded to the limiting bracket 42, the limiting strip 41 can be folded toward the corresponding side wall 4 of the vehicle body 2, and the limiting strip 41 can be accommodated in the recess 4c of the side wall 4. The limiting strip 41 can be held in the state of being accommodated in the recess 4c of the side wall 4 by means of the retainer provided in the limiting bracket 42.

[0269] refer to Figure 29 When doors 12 and 13 move from the second open position to the first open position, and the limiting strip 41 pivots toward doors 12 and 13, the limiting strip 41 can be accommodated inside doors 12 and 13 through the side openings 91 of each door, and the engaging pin 41a of the limiting strip 41 can be guided to the hook 43b of the stop 43 by the reset guide 43c of the stop 43. When doors 12 and 13 are fully moved from the second open position to the first open position, the engaging pin 41a of the limiting strip 41 can be re-engaged to the hook 43b of the stop 43 (see...). Figure 23 Then, as each door 12 and 13 moves from the first open position to the closed position, the engaging pin 41a of the limiting strip 41 can contact the stop 43 inside each door 12 and 13, so that the limiting strip 41 can be parallel to each door 12 and 13 (see...). Figure 21 ).

[0270] refer to Figure 1 According to an example embodiment of the present disclosure, the tailgate device 100 may include a pedal mechanism 80 configured to be retracted in and out of the tailgate 10 when the tailgate 10 is opened and closed. The pedal mechanism 80 may be configured to be retracted and extended relative to at least one of the first door 12 and the second door 13 of the tailgate 10.

[0271] refer to Figure 1With the tailgate 10 in the closed position, the pedal mechanism 80 can be retracted into the first door 12 of the tailgate 10. (Reference) Figure 5 With the tailgate 10 in the open position, the step mechanism 80 can be unfolded from the first door 12 of the tailgate 10. Therefore, the user can easily use the step mechanism 80 to get in and out of the luggage compartment 3 of the vehicle body 2.

[0272] refer to Figure 6 The first door 12 may have a receiving opening 93a disposed on its outer surface. The pedal mechanism 80 can be retracted into or unfolded from the receiving opening 93a of the first door 12. The first door 12 may have a recessed wall 92 recessed from the outer surface of the first door 12 towards its inner surface. When the pedal mechanism 80 is received in the receiving opening 93a of the first door 12, the pedal mechanism 80 can be supported by the recessed wall 92. The receiving opening 93a may be formed in the center of the recessed wall 92. (Reference) Figure 19 The first door 12 may have a passage 93b disposed in its inner surface, and the passage 93b may be aligned with a receiving opening 93a. Relatively long objects, such as skis, may extend through the receiving opening 93a and the passage 93b. (Reference) Figure 21 The pedal mechanism 80 may include a pedal body 81 housed in the tailgate 10 and a cover 82 covering the pedal body 81.

[0273] refer to Figure 6 According to an exemplary embodiment of the present disclosure, the tailgate assembly 100 may include a drive mechanism 50 configured to move the main frame 11 of the tailgate 10 between an open position and a closed position. The drive mechanism 50 may be disposed on either (or both) of a pair of sidewalls 4 to move corresponding cables in cables 59a and 59b. According to the exemplary embodiment, when the drive mechanism 50 moves the first cable 59a in the longitudinal direction of the vehicle, the main frame 11 of the tailgate 10 may move between a closed position and an open position.

[0274] A frame opening switch 79 may be disposed on the upper surface of each side wall 4, and the frame opening switch 79 may be electrically / wirelessly connected to a controller 150. The controller 150 may control the drive mechanism 50 and the frame latch 58, so that the main frame 11 may move between an open position and a closed position under the control of the controller 150. When the user presses the frame opening switch 79 to activate it, the controller 50 may control the unlocking of the frame latch 58 and the operation of the drive mechanism 50, so that the main frame 11 may move between an open position and a closed position.

[0275] refer to Figures 30 to 34The drive mechanism 50 can be disposed in the corresponding side wall 4, and the side wall 4 can include: an outer panel 4e facing the exterior of the vehicle body 2; an inner panel 4f facing the luggage compartment 3 of the vehicle body 2; and an upper trim piece 78 disposed on the upper edge of the outer panel 4e and the upper edge of the inner panel 4f. The frame opening switch 79 can be disposed on the upper trim piece 78.

[0276] refer to Figures 30 to 34 The drive mechanism 50 may include a spindle drive 51 configured to move the first cable 59a. The spindle drive 51 may extend or retract along the length of the vehicle body 2, such that the length of the spindle drive 51 may increase or decrease along the length of the vehicle body 2.

[0277] The main shaft drive 51 may have a first end 76 adjacent to the tailgate 10 and a second end 77 distant from the tailgate 10. The first end 76 of the main shaft drive 51 may be supported on a portion of the side wall 4 adjacent to the tailgate 10. When the main shaft drive 51 extends or retracts in the longitudinal direction of the vehicle, the second end 77 may move toward the front or rear of the vehicle body 2. (Reference) Figure 30 and Figure 32 When the main shaft drive 51 extends, the second end 77 can move towards the front of the vehicle body 2, thus moving the second end 77 relatively away from the first end 76. (Reference) Figure 31 and Figure 33 When the main spindle driver 51 retracts, the second end 77 can move toward the rear of the vehicle body 2, so that the second end 77 can be relatively close to the first end 76.

[0278] A first cable 59a may extend from the second end of the main shaft drive 51 or a portion adjacent thereto to the tailgate 10, and the first cable 59a may extend through an opening in the corresponding side wall 4. The first cable 59a may connect the main frame 11 of the tailgate 10 and the second end 77 of the main shaft drive 51. For example, the first end 71 of the first cable 59a may be connected to the main frame 11 of the tailgate 10, and the second end 72 of the first cable 59a may be connected to the second end 77 of the main shaft drive 51. When the main shaft drive 51 extends or retracts along the length of the vehicle body 2, the first cable 59a may move within the corresponding side wall 4 along the length of the vehicle body 2. (Reference) Figure 30 and Figure 32 When the main shaft drive 51 extends, the first cable 59a can move towards the front of the vehicle body 2, thus allowing the tailgate 10 to move to the closed position. (Reference) Figure 31 and Figure 33 When the main shaft drive 51 retracts, the first cable 59a can move toward the rear of the vehicle body 2, so that the tailgate 10 can be moved to the open position.

[0279] As described above, the first end 76 of the main shaft drive 51 can be held in a position adjacent to the tailgate 10, and the second end 77 of the main shaft drive 51 can be moved toward the front or rear of the vehicle body 2 by extending or retracting the main shaft drive 51, so that the first cable 59a connecting the second end 77 of the main shaft drive 51 and the tailgate 10 can be moved in the longitudinal direction of the vehicle, thus enabling the opening and closing of the tailgate 10 to be performed stably.

[0280] refer to Figures 30 to 33 The second end 77 of the spindle drive 51 can be configured to move along the length of the vehicle body 2. The drive mechanism 50 may further include a guide rail 54 for guiding the movement of the second end 77 of the spindle drive 51. (See reference) Figure 30 and Figure 31 The guide rail 54 can extend within the side wall 4 along the length of the vehicle body 2, and the guide rail 54 can be fixed to the inner panel 4f of the side wall 4.

[0281] The drive mechanism 50 may further include a track block 53 connected to the second end 77 of the spindle drive 51, and the track block 53 may be configured to slide along a guide rail 54. When the spindle drive 51 extends or retracts, the track block 53 may move along the guide rail 54 together with the second end 77 of the spindle drive 51. (Reference) Figure 30 and Figure 32 When the main shaft drive 51 extends, the track block 53 and the second end 77 of the main shaft drive 51 can move forward toward the front of the vehicle body 2. (Reference) Figure 31 and Figure 33 When the main shaft drive 51 retracts, the track block 53 and the second end 77 of the main shaft drive 51 can move backward toward the rear of the vehicle body 2.

[0282] refer to Figure 39 The track block 53 may include: a block body 53a having a sliding groove 53b into which the guide rail 54 is slidably inserted; a retaining pin 53c protruding upward from the block body 53a; and a connecting protrusion 53d protruding from the block body 53a toward the second end 77 of the spindle driver 51.

[0283] refer to Figure 33 , Figure 34 , Figure 36 and Figure 37The stop 55 can be fixed to the rear end of the guide rail 54. When the track block 53 moves toward the rear of the vehicle body 2, the stop 55 can limit the range of movement of the track block 53, thereby limiting the retraction length of the main shaft drive 51. When the main shaft drive 51 retracts, the track block 53 and the second end 77 of the main shaft drive 51 move together toward the rear of the vehicle body 2, and the track block 53 can be limited by the stop 55, thereby limiting the retraction length of the main shaft drive 51, and the stop 55 can prevent excessive load from being applied to the motor 56a of the main shaft drive 51. When the track block 53 contacts the stop 55, the main shaft drive 51 can retract to its minimum retraction length. Even when the tailgate 10 is manually opened, the stop 55 can limit the rearward movement of the track block 53, so that the manual opening of the tailgate 10 can be stably performed using the stop 55.

[0284] The first end 71 of the first cable 59a can be connected to the first side 11b of the main frame 11 of the tailgate 10, and the second end 72 of the first cable 59a can be connected to the second end 77 of the spindle drive 51. (See reference) Figure 34 The first end 71 of the first cable 59a may have at least one insertion hole, and the second end 72 of the first cable 59a may have at least one insertion hole. (See reference) Figure 32 and Figure 33 The fixing pin 73 can be fixed to the first side member 22a of the first side portion 11b of the main frame 11, and the fixing pin 73 can be inserted into the insertion hole of the first end 71 of the first cable 59a, so that the first end 71 of the first cable 59a is detachably connected to the fixing pin 73. (Reference) Figure 37 The retaining pin 53c of the track block 53 can be inserted into the insertion hole of the second end 72 of the first cable 59a, so that the second end 72 of the first cable 59a is detachably connected to the retaining pin 53c of the track block 53. The second end 77 of the spindle driver 51 can be connected to the connecting protrusion 53d of the track block 53, so that the second end 77 of the spindle driver 51 can be connected to the second end 72 of the first cable 59a through the track block 53. The second end 77 of the spindle driver 51 can be a socket element with a spherical recess, and the connecting protrusion 53d of the track block 53 can be a spherical element. The connecting protrusion 53d of the track block 53 can be inserted into the recess of the second end 77 of the spindle driver 51, so that the connecting protrusion 53d of the track block 53 and the second end 77 of the spindle driver 51 can form a ball-and-socket joint.

[0285] The drive mechanism 50 may further include a guide pulley 52 configured to guide movement of the first cable 59a. The guide pulley 52 is rotatably mounted on a portion of the side wall 4 adjacent to the tailgate 10. A shaft 52c is secured to the inner panel 4f of the side wall 4 by fasteners, and the guide pulley 52 is rotatably supported on the shaft 52c, such that the guide pulley 52 guides movement of the first cable 59a. (Reference) Figure 35 The guide pulley 52 is rotatably supported on the shaft 52c, and the ball element 52a can be fixed to the shaft 52c.

[0286] According to an example embodiment, the first end 76 of the spindle driver 51 may be fixed to the inner panel 4f of the sidewall 4.

[0287] According to another example embodiment, the first end 76 of the spindle driver 51 may be connected to the shaft 52c of the guide pulley 52. ​​(See reference...) Figure 35 and Figure 36 The first end 76 of the spindle drive 51 can be connected to the guide pulley 52. ​​The first end 76 of the spindle drive 51 can be a socket element with a spherical recess. The ball element 52a of the guide pulley 52 can be inserted into the recess of the first end 76 of the spindle drive 51, such that the first end 76 of the spindle drive 51 and the ball element 52a of the guide pulley 52 can form a ball-and-socket joint.

[0288] According to an exemplary embodiment of this disclosure, the spindle drive 51 may include a housing tube 51a fixed to the side wall 4 of the vehicle body 2 and a movable tube 51b movable relative to the housing tube 51a. The spindle drive 51 may further include a guide tube 51c disposed between the housing tube 51a and the movable tube 51b. The guide tube 51c may be configured to guide the movement of the movable tube 51b. According to an exemplary embodiment, such as... Figure 40 As shown, the outer diameter of the guide tube 51c may be smaller than the inner diameter of the moving tube 51b. According to other example embodiments, the inner diameter of the guide tube 51c may be larger than the outer diameter of the moving tube 51b.

[0289] refer to Figure 40 The spindle driver 51 may include: a motor 56a disposed in the housing tube 51a; a spindle 58a rotated by the motor 56a; a spindle nut 58b engaging with the spindle 58a; and a spindle tube 59 connected to the spindle nut 58b. The motor 56a may be a bidirectional motor configured to rotate clockwise and counterclockwise. A motor sensor 106, such as a Hall effect sensor (see [link to related document]), may also be used. Figure 41The spindle 58a can be mounted on motor 56a, and the RPM of motor 56a can be controlled by motor sensor 106 and controller 150, making the extension and retraction speeds of spindle drive 51 adjustable. A first end of spindle 58a can be connected to motor 56a within housing tube 51a, and a second end of spindle 58a can be located away from housing tube 51a. Spindle 58a can be disposed inside housing tube 51a, inside guide tube 51c, or inside moving tube 51b. The longitudinal axis of spindle 58a and the longitudinal axis of spindle nut 58b can be aligned with the longitudinal axis of spindle drive 51. Spindle 58a can have external threads formed on its outer circumferential surface, and spindle nut 58b can have internal threads formed on its inner circumferential surface. The external threads of spindle 58a can have a relatively long pitch and a relatively small helix angle. When spindle 58a rotates clockwise or counterclockwise using motor 56a, spindle nut 58b can move linearly along the longitudinal axis of spindle 58a. The spindle tube 59 can be fixed to the spindle nut 58b, and the spindle tube 59 can move together with the spindle nut 58b in the same direction.

[0290] refer to Figure 40The first end of the housing tube 51a can be located away from the moving tube 51b, the second end of the housing tube 51a can be adjacent to the moving tube 51b, and the first end of the housing tube 51a can be adjacent to the tailgate 10. A first end cap 76a can be installed on the first end of the housing tube 51a, and the first end 76 of the spindle drive 51 can protrude from the first end cap 76a, such that the first end 76 of the spindle drive 51 can be located at the first end of the housing tube 51a. The first end of the moving tube 51b can be adjacent to the housing tube 51a, and the second end of the moving tube 51b can be located away from the housing tube 51a. A second end cap 77a can be installed on the second end of the moving tube 51b, and the second end 77 of the spindle drive 51 can protrude from the second end cap 77a, such that the second end 77 of the spindle drive 51 can be located at the second end of the moving tube 51b. The first end of the spindle tube 59 can be fixed to the spindle nut 58b, and the second end of the spindle tube 59 can be connected to the second end cap 77a. The second end of the spindle tube 59 can be connected to the movable tube 51b via a second end cap 77a. That is, both ends of the spindle tube 59 can be connected to the spindle nut 58b and the movable tube 51b. When the spindle 58a rotates in a first direction (e.g., clockwise), the spindle nut 58b can move away from the housing tube 51a. Therefore, the spindle nut 58b and the spindle tube 59 can move away from the housing tube 51a, allowing the movable tube 51b to move to an extended position away from the housing tube 51a, and the spindle drive 51 to extend. When the spindle 58a rotates in a second direction (e.g., counterclockwise), the spindle nut 58b can move closer to the housing tube 51a. Therefore, the spindle nut 58b and the spindle tube 59 can move closer to the housing tube 51a, allowing the movable tube 51b to move to a retracted position close to the housing tube 51a, and the spindle drive 51 to retract.

[0291] refer to Figure 40 The spindle drive 51 may further include a spring 51d that allows the spindle drive 51 to be biased in the direction in which the spindle drive 51 extends. The spring 51d may be configured to provide a biasing force to allow the moving tube 51b to be biased to the extended position. The two ends of the spring 51d may be supported on the housing tube 51a and the moving tube 51b, respectively. For example, a first end of the spring 51d may be supported on the housing tube 51a, and a second end of the spring 51d may be supported on a second end cap 77a. The biasing and extension of the spindle drive 51 by the spring 51d may assist in the manual closing of the tailgate 10.

[0292] refer to Figure 40 The gearbox 56b, coupler 56c, and brake 56d can be housed within the housing tube 51a. The gearbox 56b can be connected to the output shaft of the motor 56a, and the coupler 56c can be configured to connect the gearbox 56b and the spindle 58a. The brake 56d can provide braking torque to the spindle 58a.

[0293] According to the above example embodiment, the drive mechanism 50 can be configured to move only the first cable 59a of a pair of cables 59a and 59b. The second cable 59b can be configured to connect the second side 11c of the main frame 11 and the corresponding side wall 4.

[0294] According to another example embodiment, a pair of drive mechanisms 50 may be configured to move the first cable 59a and the second cable 59b independently.

[0295] Figure 41 A block diagram of a control system between a controller 150 and components connected thereto in a vehicle tailgate device according to an example embodiment of the present disclosure.

[0296] The frame opening switch 79, the first door opening switch 28c, the second door opening switch 29c, the frame latch 58, and the main shaft drive 51 are electrically connected to the controller 150. The frame latch 58 can be configured to allow the main frame 11 of the tailgate 10 to lock to and unlock from the side wall 4 of the vehicle body 2. When the user presses the frame opening switch 79, the activation signal of the frame opening switch 79 can be transmitted to the controller 150, and the controller 150 can control the operation of the frame latch 58 and the main shaft drive 51, so that the main frame 11 can be opened and closed.

[0297] Motor sensor 106 can be electrically connected to controller 150. Motor sensor 106 can be mounted on motor 56a of spindle drive 51, and the RPM of motor 56a can be controlled by motor sensor 106 and controller 150, thereby adjusting the extension and retraction speeds of spindle drive 51. Motor sensor 106 can detect the force acting on spindle drive 51. According to an example embodiment, motor sensor 106 can be a Hall sensor.

[0298] The controller 150 can determine the extension length and retraction length of the spindle driver 51 based on the RPM of the motor 56a and the pitch of the spindle 58a as measured by the motor sensor 106.

[0299] The first door opening switch 28c, the second door opening switch 29c, the first lower latch 109a, the second lower latch 109b, and the magnetic module 37 are electrically connected to the controller 150. The first lower latch 109a locks and unlocks the first lower striker 19a, and can be configured to allow the first door 12 to lock to and unlock from the main frame 11. Similarly, the second lower latch 109b locks and unlocks the second lower striker 19b, and can be configured to allow the second door 13 to lock to and unlock from the main frame 11. The magnetic module 37 locks and unlocks the contact module 38, and can be configured to allow the first door 12 and the second door 13 to lock and unlock each other.

[0300] When the user presses the first door opening switch 28c, the activation signal of the first door opening switch 28c is transmitted to the controller 150, and the controller 150 can control the operation of the first lower latch 109a and the operation of the magnetic module 37. When the user presses the second door opening switch 29c, the activation signal of the second door opening switch 29c is transmitted to the controller 150, and the controller 150 can control the operation of the second lower latch 109b and the operation of the magnetic module 37.

[0301] A first locking sensor 101 may be electrically connected to a controller 150. The first locking sensor 101 may be disposed on a frame latch 58, and the first locking sensor 101 may detect the fully locked state of the frame latch 58. The controller 150 may determine whether the frame latch 58 is in a fully locked state based on the detection result of the first locking sensor 101.

[0302] The second locking sensor 102 may be electrically connected to the controller 150. The second locking sensor 102 may be disposed on the frame latch 58, and the second locking sensor 102 may detect the partially locked state of the frame latch 58. The controller 150 may determine whether the frame latch 58 is in a partially locked state based on the detection result of the second locking sensor 102.

[0303] The first door lock sensor 103 can be electrically connected to the sensor 150. The first door lock sensor 103 can be disposed on the first lower latch 109a, and the first door lock sensor 103 can detect the locked state of the first lower latch 109a. The controller 150 can determine whether the first lower latch 109a is in a locked state based on the detection result of the first door lock sensor 103.

[0304] The second door lock sensor 104 can be electrically connected to the sensor 150. The second door lock sensor 104 can be disposed on the second lower latch 109b, and the second door lock sensor 104 can detect the locked state of the second lower latch 109b. The controller 150 can determine whether the second lower latch 109b is in a locked state based on the detection result of the second door lock sensor 104.

[0305] A magnetic lock sensor 105 can be electrically connected to a sensor 150. The magnetic lock sensor 105 can be disposed on the magnetic module 37, and the magnetic lock sensor 105 can detect the locked state of the magnetic module 37. The controller 150 can determine whether the magnetic module 37 is in a locked state based on the detection result of the magnetic lock sensor 105.

[0306] As described above, according to an exemplary embodiment of this disclosure, the tailgate can be stably opened and closed by moving a cable along the length of the vehicle, based on the extension or retraction of the main shaft drive. Manual closing of the tailgate can be facilitated using a spring embedded in the main shaft drive.

[0307] According to an example embodiment of this disclosure, the first end of the main shaft drive can be held in a position adjacent to the tailgate, and the second end of the main shaft drive can be moved toward the front or rear of the vehicle by extending or retracting the main shaft drive, such that the cable connecting the second end of the main shaft drive and the tailgate can be moved in the longitudinal direction of the vehicle, thereby stably performing the opening and closing of the tailgate.

[0308] According to an exemplary embodiment of this disclosure, the main frame of the tailgate can be aligned with a pair of side walls and the floor of the vehicle body, so that the main frame does not interfere with the luggage compartment when the tailgate is opened in a pull-down manner. Therefore, the width of the main frame can be maximized to correspond to the width of the vehicle body, and the width of the luggage compartment can be relatively increased. That is, when the tailgate is opened in a pull-down manner, the opening width (or opening area) of the luggage compartment can be maximized.

[0309] According to an exemplary embodiment of this disclosure, the doors are pivotally connected to corresponding sides of the main frame via side hinges. When each door is opened, it can move to a first open position and a second open position. In particular, when each door moves to the second open position where it overlaps with the outer surface of the corresponding side wall of the vehicle body, the door is not located at the rear of the vehicle, thereby improving the space utilization of the rear of the vehicle. Specifically, because the door is not located at the rear of the vehicle when it is in the second open position, this facilitates luggage loading and unloading, trailer connection, user movement, etc.

[0310] According to an example embodiment of this disclosure, two doors can be configured to open and close simultaneously or independently when the main frame is in the closed position, thus making it easy to open and close each door.

[0311] According to an example embodiment of this disclosure, the frame opening switch can be disposed on the upper surface of each side wall of the vehicle body, and the door opening switch can be disposed on each door handle, so that each opening switch can be used intuitively. Therefore, the tailgate can be opened and closed easily.

[0312] According to an exemplary embodiment of this disclosure, each side hinge may use two vertical axes, allowing each door to move along an elliptical swing path. Therefore, the swing path of each door can be relatively compact, making it easy to open and close the doors in confined spaces.

[0313] According to exemplary embodiments of this disclosure, the tailgate device can operate in various modes, such as a first mode, a second mode, and a third mode, for various purposes, thus significantly improving its usability and convenience. When the tailgate device operates in various modes, the accessibility of the luggage compartment, the loading capacity of the luggage compartment, etc., can be significantly improved.

[0314] In the foregoing, although the present invention has been described with reference to exemplary embodiments and accompanying drawings, the present invention is not limited thereto, but can be modified and altered in various ways by those skilled in the art without departing from the spirit and scope of the present invention.

Claims

1. A vehicle tailgate device, comprising: A tailgate configured to move between an open and closed position at the rear of the vehicle's luggage compartment; as well as A drive mechanism configured to move the tailgate between the open position and the closed position, wherein the drive mechanism includes: a spindle driver configured to extend or retract; And the cable connecting the main shaft drive and the tailgate.

2. The vehicle tailgate device according to claim 1, wherein, The vehicle tailgate assembly is configured such that the main shaft drive extends in the closed position and retracts in the open position.

3. The vehicle tailgate device according to claim 2, wherein, The spindle drive includes: a first spindle end disposed adjacent to the tailgate; and a second spindle end located further away from the tailgate than the first spindle end. The vehicle tailgate device is configured such that when the main shaft drive extends, the second main shaft end of the main shaft drive moves toward the front of the vehicle body, and when the main shaft drive retracts, the second main shaft end of the main shaft drive moves toward the rear of the vehicle body.

4. The vehicle tailgate device according to claim 3, wherein, The first end of the cable is connected to the tailgate, and the second end of the cable is connected to the second spindle end of the spindle drive.

5. The vehicle tailgate device according to claim 3, wherein, The drive mechanism also includes a guide rail configured to guide the movement of the second spindle end of the spindle driver.

6. The vehicle tailgate device according to claim 5, wherein, The drive mechanism further includes a track block connected to the second spindle end of the spindle driver, wherein the track block is configured to slide along the guide rail.

7. The vehicle tailgate device according to claim 6, wherein, The second end of the cable is connected to the track block.

8. The vehicle tailgate device according to claim 7, wherein, The track block includes: a sliding groove in which the guide rail is slidably embedded; a connecting protrusion to which the second spindle end of the spindle driver is connected; and a fixing pin to which the second cable end of the cable is connected.

9. The vehicle tailgate device according to claim 6, wherein, The drive mechanism also includes a stop configured to limit the range of movement of the track block when the track block moves toward the rear of the vehicle body.

10. The vehicle tailgate device according to claim 1, wherein, The drive mechanism also includes a guide pulley configured to guide the movement of the cable.

11. The vehicle tailgate device according to claim 1, wherein, The spindle drive includes: Shell tube; A movable tube configured to move relative to the housing tube; The motor is installed in the housing tube; A spindle configured to rotate using the motor; and The spindle nut that meshes with the main shaft, The movable tube is configured to move between a retracted position adjacent to the housing tube and an extended position away from the housing tube.

12. The vehicle tailgate device according to claim 11, wherein, The spindle driver also includes a guide tube configured to guide the movement of the moving tube.

13. The vehicle tailgate device according to claim 11, wherein, The spindle driver also includes a spring configured to bias the moving tube into the extended position.

14. A vehicle tailgate device, comprising: A tailgate configured to move between an open and closed position at the rear of the vehicle's luggage compartment; as well as A drive mechanism configured to move the tailgate between the open position and the closed position, wherein the drive mechanism includes: a spindle driver configured to extend or retract; and a cable connected between the spindle driver and the tailgate. The vehicle tailgate assembly is configured such that the main shaft drive extends in the closed position and retracts in the open position. The main shaft drive includes: a first main shaft end disposed adjacent to the tailgate; and a second main shaft end located further away from the tailgate than the first main shaft end, wherein the vehicle tailgate device is configured such that when the main shaft drive extends, the second main shaft end of the main shaft drive moves towards the front of the vehicle body, and when the main shaft drive retracts, the second main shaft end of the main shaft drive moves towards the rear of the vehicle body. The first end of the cable is connected to the tailgate, and the second end of the cable is connected to the second spindle end of the spindle drive. The tailgate includes a main frame having a bottom and a pair of sides extending from both ends of the bottom, wherein at least a portion of the luggage compartment is defined by the inner surfaces of a pair of sidewalls and a bottom plate, wherein the pair of sides of the main frame are aligned with corresponding outer surfaces of the pair of sidewalls, and the bottom is aligned with the bottom plate.

15. The vehicle tailgate device according to claim 14, wherein, The first cable end of the cable is connected to the main frame.

16. The vehicle tailgate device according to claim 14, wherein, The tailgate is configured such that, when the main frame is in the closed position, the outer surfaces of each of the pair of side sections of the main frame are aligned with the corresponding outer surfaces of the pair of sidewalls. The tailgate is configured such that, when the main frame is in the closed position, each of the pair of sides of the main frame covers the corresponding rearward outer surface of the pair of sidewalls. The tailgate is configured such that, when the main frame is in the open position, the corresponding rearward outer surfaces of the pair of sidewalls are exposed and not covered by the pair of sides of the main frame.

17. The vehicle tailgate device according to claim 14, wherein, The tailgate is configured such that when the main frame is in the closed position, the upper surface of the bottom of the main frame is aligned with the base plate, and The tailgate is configured such that when the main frame is in the open position, the side of the bottom of the main frame is aligned with the base plate.

18. The vehicle tailgate device according to claim 14, further comprising: The main taillight assembly is located below the tailgate; Auxiliary taillight assemblies are disposed on the corresponding rearward outer surfaces of the pair of sidewalls, wherein the tailgate is configured such that when the main frame is in the open position, the auxiliary taillight assemblies are exposed and not covered by the pair of sides of the main frame, and wherein the tailgate is configured such that when the main frame is in the closed position, one or both of the pair of sides of the main frame cover the auxiliary taillight assemblies.

19. A vehicle tailgate device, comprising: A tailgate configured to move between an open and closed position at the rear of the vehicle's luggage compartment; A drive mechanism configured to move the tailgate between the open position and the closed position, wherein the drive mechanism includes: a spindle driver configured to extend or retract; and a cable connected between the spindle driver and the tailgate. The vehicle tailgate assembly is configured such that the main shaft drive extends in the closed position and retracts in the open position. The main shaft drive includes: a first main shaft end disposed adjacent to the tailgate; and a second main shaft end located further away from the tailgate than the first main shaft end, wherein the vehicle tailgate device is configured such that when the main shaft drive extends, the second main shaft end of the main shaft drive moves towards the front of the vehicle body, and when the main shaft drive retracts, the second main shaft end of the main shaft drive moves towards the rear of the vehicle body. The first end of the cable is connected to the tailgate, and the second end of the cable is connected to the second spindle end of the spindle drive. The tailgate includes a main frame having a bottom and a pair of sides extending from both ends of the bottom, wherein at least a portion of the luggage compartment is defined by the inner surfaces of a pair of sidewalls and a floor plate, wherein the pair of sides of the main frame are aligned with corresponding outer surfaces of the pair of sidewalls, and wherein the bottom is aligned with the floor plate; and A pair of doors are pivotally connected to a pair of sides of the main frame via hinges, wherein the pair of doors are disposed in an opening defined by the bottom of the main frame and the pair of sides.

20. The vehicle tailgate device according to claim 19, wherein, Each of the hinges is configured to pivot about a first vertical axis adjacent to one of the pair of sidewalls of the vehicle body. Each of the hinges is further configured to pivot about a second vertical axis adjacent to one of the doors in the pair, and The second vertical axis is parallel to the first vertical axis.

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