Electric tailgate

Abstract

This invention relates to an electric trunk device, comprising: an articulated arm connected to a trunk lid and configured to be rotatably connected to a body panel defining a trunk space, the articulated arm being configured to open and close the trunk lid; a torsion bar linkage rotatably connected to the middle of the articulated arm; a torsion bar connected anterior to the articulated arm between the torsion bar linkage and the body panel, the torsion bar being configured to provide a spring force in a direction that opens the trunk lid; and an electric drive unit connected between the articulated arm and the torsion bar, the electric drive unit being configured to move together with the articulated arm and simultaneously provide a rotational force to the articulated arm.

Description

Technical Field

[0001] This invention relates to an electric trunk device. Background Technology

[0002] The latch is mounted on the trunk lid, and the impact element is mounted on the vehicle body. Therefore, when the trunk lid is closed, the latch engages with the impact element, locking the latch. When the release lever is operated, the latch disengages from the impact element, unlocking the latch.

[0003] Meanwhile, in the case of an electric tailgate system configured to open the tailgate electrically, a spring or pneumatic lifter is used to open the tailgate.

[0004] However, it is difficult to apply spring-based electric trunk opening and closing mechanisms to torsion bar-based trunk opening and closing mechanisms.

[0005] Trunk opening and closing devices using torsion bars are mainly used in mid-sized passenger vehicles. The torsion bar is connected to the body and the articulated arm, so that the trunk lid can be opened by the spring force of the torsion bar.

[0006] Therefore, there is a need for an electric tailgate device optimized for mid-sized vehicle components via a torsion bar-based tailgate opening and closing mechanism.

[0007] The circumstances disclosed in this section are merely intended to enhance the understanding of the general background of the invention and should not be construed as an admission or in any way implying that these circumstances constitute prior art known to those skilled in the art. Summary of the Invention

[0008] This invention relates to an electric trunk device. A particular embodiment relates to an electric trunk device having an electrically openable and closing structure, which is applied to a torsion bar-based trunk to automatically open and close the trunk lid.

[0009] This invention aims to solve problems in the field. One embodiment of this invention provides an electric trunk device with an electric opening and closing structure, which is applied to a torsion bar-based trunk to automatically open and close the trunk lid.

[0010] According to embodiments of the present invention, the above and other objectives can be achieved by providing an electric tailgate device comprising: an articulated arm coupled to a tailgate lid and rotatably coupled to a body panel defining a tailgate space, the articulated arm being configured to open and close the tailgate lid; a torsion bar linkage rotatably coupled to a middle portion of the articulated arm; a torsion bar connected anterior to the articulated arm to the torsion bar linkage and the body panel and located between the two, the torsion bar being configured to provide a spring force in a direction that opens the tailgate lid; and an electric drive unit connected to the articulated arm and the torsion bar and located between the two, the electric drive unit being configured to move together with the articulated arm and simultaneously provide a rotational force to the articulated arm.

[0011] The articulated arm can be bent into a "U" shape, allowing the electric drive unit to be connected to the middle of the articulated arm, and the middle of the articulated arm can rotate to face the front of the vehicle when the trunk lid is closed, so that the electric drive unit can be located in the trunk space in front of the articulated arm.

[0012] The electric drive unit can be mounted so that it can rotate relative to the articulated arm when the articulated arm rotates.

[0013] The electric drive unit may include: a motor assembly comprising a motor configured to provide rotational force to the articulated arm and a rotating shaft disposed at one end of a motor housing, the rotating shaft being configured to rotate in a state interlocked with the motor; a motor bracket having one end connected to the middle of the articulated arm and the other end connected to the rotating shaft; and a motor linkage having one end rotatably connected to the other end of the motor housing and the other end rotatably engaged by the lower end of a torsion bar.

[0014] The motor bracket can be connected to the opposite side of the articulated arm, the motor assembly can be assembled between the motor brackets, and one end of each torsion bar can be connected to a corresponding side of the opposite side of the articulated arm, such that the torsion bar covers the opposite side surface of the motor bracket, thereby allowing the electric drive unit to be disposed between the torsion bar links.

[0015] A first engaging portion having an opening on one side may be formed at the other end of the torsion bar connecting rod such that the lower end of the torsion bar is engaged by the first engaging portion, and a second engaging portion having an opening on one side may be formed at the other end of the motor connecting rod such that the second engaging portion is engaged by the lower end of the torsion bar, the first engaging portion and the second engaging portion opening in different directions.

[0016] When the articulated arm rotates, the motor assembly can rotate in the opposite direction to the rotation direction of the articulated arm.

[0017] The electric drive unit is mounted so that it can rotate relative to the articulated arm while in a constrained state during the rotation of the articulated arm.

[0018] The electric drive unit may include: a motor assembly comprising a motor connected to the middle of the articulated arm and a rotating shaft disposed in the middle of the motor housing, the motor being configured to provide rotational force to the articulated arm, the rotating shaft being configured to rotate in a state interlocked with the motor; a first motor link having one end connected to the rotating shaft; and a second motor link having one end hinged to the other end of the first motor link, and the other end being rotatably engaged by the lower end of a torsion bar.

[0019] The motor bracket can be connected to the opposite side of the articulated arm, the motor assembly can be assembled between the motor brackets, and one end of each torsion bar can be connected to a corresponding side of the opposite side of the articulated arm, such that the torsion bar covers the opposite side surface of the motor bracket, thereby allowing the electric drive unit to be disposed between the torsion bar links.

[0020] A first engaging portion having an opening on one side may be formed at the other end of the torsion bar connecting rod such that the lower end of the torsion bar is engaged by the first engaging portion, and a second engaging portion having an opening on one side may be formed at the other end of the second motor connecting rod such that the second engaging portion is engaged by the lower end of the torsion bar, the first engaging portion and the second engaging portion opening in different directions.

[0021] The first motor link can be assembled from one end to the other in a downward direction, and the second motor link can be assembled from the other end to one end in a downward direction, so that the other end of the first motor link and one end of the second motor link can be hinged to each other in a downward direction.

[0022] The first motor link can be assembled from one end to the other in an upward direction, and the second motor link can be assembled from the other end to one end in an upward direction, so that the other end of the first motor link and one end of the second motor link can be hinged to each other in an upward direction. Attached Figure Description

[0023] The above and other objects, features, and other advantages of the embodiments of the present invention will become clearer from the following detailed description taken in conjunction with the accompanying drawings, wherein:

[0024] Figure 1 A view showing a trunk lid equipped with an electric trunk device according to an embodiment of the present invention;

[0025] Figure 2 A structural view of a first embodiment of an electric drive unit assembled according to an embodiment of the present invention is shown;

[0026] Figure 3 Show Figure 2 A view showing the electric drive unit in a separated state;

[0027] Figures 4A to 4C Show open Figure 2 A view showing the process of the articulated arm;

[0028] Figure 5 A structural view of a second embodiment of an electric drive unit assembled according to an embodiment of the present invention is shown;

[0029] Figure 6 Show Figure 5 A view showing the electric drive unit in a separated state;

[0030] Figure 7 Show Figure 5 The view shown depicts the electric drive unit and torsion bar linkage separated from the hinged arm; and

[0031] Figures 8A to 8C Show open Figure 5 A view showing the process of the articulated arm. Detailed Implementation

[0032] Preferred embodiments of the invention will now be described in detail with reference to the accompanying drawings.

[0033] Figure 1 A view showing a trunk lid equipped with an electric trunk device according to an embodiment of the present invention.

[0034] Referring to the accompanying drawings, an electric trunk device according to an embodiment of the present invention includes: an articulated arm 100 connected to a trunk lid 10 and simultaneously rotatably connected to a body panel 20 defining a trunk space, the articulated arm 100 being configured to open and close the trunk lid 10; a torsion bar link 200 rotatably connected to the middle portion of the articulated arm 100; a torsion bar 300 connected in front of the articulated arm 100 to the torsion bar link 200 and the body panel 20 and located between the two, the torsion bar 300 being configured to provide a spring force in the direction of opening the trunk lid 10; and an electric drive unit (see, for example...). Figure 5 or Figure 6 The electric drive unit is connected to the articulated arm 100 and the torsion bar 300 and is located between the two. The electric drive unit is configured to move together with the articulated arm 100 and simultaneously provide rotational force to the articulated arm 100.

[0035] For example, the articulated bracket 30 is connected in the front-rear direction to the opposite side of the roof that defines the trunk space, the upper end of the linear torsion bar 300 is engaged by the front end of each articulated bracket 30, and the rear end of the articulated arm 100 is hinged to the rear end of the articulated bracket 30.

[0036] Furthermore, the rear end of the torsion bar 200 is hinged to the middle of the hinge arm 100, and the lower end of the torsion bar 300 is rotatably engaged by the front end of the torsion bar 200.

[0037] Therefore, when the articulated arm 100 rotates to open and close the trunk lid 10, the articulated arm 100, the torsion bar 200 and the torsion bar 300 rotate around the articulated bracket 30 like a four-bar linkage, thereby causing the articulated arm 100 to rotate.

[0038] Specifically, the electric drive unit is installed between the articulated arm 100 and the torsion bar 300, and the rotational force of the motor 410 constituting the electric drive unit is transmitted to the articulated arm 100 to cause the articulated arm 100 to rotate.

[0039] Furthermore, when the articulated arm 100 rotates in the direction that opens the trunk lid 10, the lower end of the torsion bar 300 applies pressure to the lower end of the torsion bar link 200 through the elastic force of the torsion bar 300, thereby providing assistance to the rotational force of the electric drive unit to rotate the articulated arm 100.

[0040] That is, the electric drive unit is installed between the torsion bar 300 and the hinge arm 100 to form an electric trunk device with an electric opening and closing structure, so that the trunk lid 10 can be opened and closed automatically.

[0041] Furthermore, in an embodiment of the invention, the articulated arm 100 is bent into a "U" shape, the electric drive unit is connected to the middle of the articulated arm 100, and when the trunk lid 10 is closed, the middle of the articulated arm 100 rotates to face the front of the vehicle, so that the electric drive unit is located in the trunk space in front of the articulated arm 100.

[0042] In other words, the electric drive unit is located inside the trunk along with the torsion bar 300, thus preventing the electric drive unit from being exposed. Therefore, the trunk space is maximized by using trunk trim configured to cover the electric drive unit with minimal application.

[0043] Figure 2 A structural view of a first embodiment of an electric drive unit assembled according to an embodiment of the present invention is shown, and Figure 3 Show Figure 2 The view shown depicts the electric drive unit in a separated state.

[0044] Referring to the accompanying drawings, the electric drive unit can be mounted so that it can rotate relative to the articulated arm 100 when the articulated arm 100 rotates.

[0045] Specifically, the electric drive unit may include: a motor assembly 400, which includes a motor 410 configured to provide rotational force to the articulated arm 100 and a rotating shaft 412 disposed at one end of the motor housing 400a, the rotating shaft 412 being configured to rotate in a state interlocked with the motor 410; a motor bracket 420, one end of which is connected to the middle of the articulated arm 100 and the other end of which is connected to the rotating shaft 412; and a motor connecting rod 430, one end of which is rotatably connected to the other end of the motor housing 400a, and the other end of which is rotatably engaged by the lower end of a torsion bar 300.

[0046] For example, the motor 410 can be installed at the rear upper end of the motor housing 400a, and the worm gear can be installed in the motor housing 400a to rotate by the rotational force of the motor 410.

[0047] Furthermore, an external gear-type worm gear meshing with the worm gear and at least one output gear meshing with the worm gear externally can be installed in the motor housing 400a. The shaft of the final output gear is exposed outside the motor housing 400a. The shaft of the final output gear constitutes the rotating shaft 412.

[0048] The motor bracket 420 is formed in the shape of a triangular plate. The base surface of the motor bracket 420 is fixedly connected to the middle part of the hinge arm 100 by bolts, and the vertex part of the motor bracket 420 opposite to the base surface is fixedly connected to the rotating shaft 412, so that the rotational force of the motor 410 is transmitted to the hinge arm 100.

[0049] The upper end of the motor connecting rod 430 is hinged to the front end of the motor housing 400a, and the lower end of the motor connecting rod 430 is engaged by the lower end of the torsion bar 300.

[0050] That is, when the motor 410 rotates, the rotating shaft 412 rotates through the gear meshing structure in the motor housing 400a. Since the rotating shaft 412 is fixed to the motor bracket 420, the motor bracket 420 rotates in the same direction as the rotating shaft 412, thereby causing the hinge arm 100 connected to the motor bracket 420 to rotate.

[0051] In addition, refer to Figure 2 and Figure 3 The motor bracket 420 is connected to the opposite side of the hinge arm 100, the motor assembly 400 is assembled between the motor brackets 420, and one end of each torsion bar link 200 is connected to a corresponding side of the opposite side of the hinge arm 100, such that the torsion bar link 200 covers the opposite side surface of the motor bracket 420, thereby allowing the electric drive unit to be disposed between the torsion bar links 200.

[0052] For example, the base surface of each motor bracket 420 is fixedly connected to a corresponding side of the middle of the hinge arm 100, and the apex of the motor bracket 420 is fixedly connected to the opposite end of the rotating shaft 412 on the opposite side of the motor housing 400a, thereby assembling the motor assembly 400 between the motor brackets 420.

[0053] Furthermore, the torsion bar link 200 is formed to extend longitudinally and connect to the opposite side of the hinge arm 100. One end of each torsion bar link 200 is rotatably connected to the middle of the hinge arm 100. The middle of the hinge arm 100 may be a portion corresponding to the middle of the base surface of each motor bracket 420.

[0054] The middle portion of each torsion bar link 200, extending between one end and the other, is formed to project outward to ensure the distance between the torsion bar links 200. Therefore, the motor assembly 400 can move and rotate simultaneously while positioned between the torsion bar links 200.

[0055] Furthermore, a first engaging portion 202 with an opening on one side is formed at the other end of each torsion bar 300, such that the lower end of the torsion bar 300 is engaged by the first engaging portion 202, and a second engaging portion 432 with an opening on one side is formed at the other end of the motor connecting rod 430, such that the second engaging portion 432 is engaged by the lower end of the torsion bar 300. The first engaging portion 202 and the second engaging portion 432 may open in different directions.

[0056] Preferably, the first engaging portion 202 and the second engaging portion 432 open in opposite directions.

[0057] For example, one end of a torsion bar 200 is connected to the other end of another torsion bar 200, and a U-shaped first engaging portion 202 is formed at the center of the other end of each torsion bar 200, and the first engaging portion 202 is open in the longitudinal direction of each torsion bar 200.

[0058] A U-shaped second engaging portion 432 is formed at the lower end of the motor connecting rod 430, and the second engaging portion 432 opens toward the motor assembly 400.

[0059] The first engaging portion 202 and the second engaging portion 432 are engaged in different directions by the lower end of the torsion bar 300, thereby preventing the torsion bar 300 from separating from the first engaging portion 202 and the second engaging portion 432 during rotation of the articulated arm 100.

[0060] Furthermore, when the articulated arm 100 rotates, the motor assembly 400 can rotate in the opposite direction to the rotation direction of the articulated arm 100.

[0061] refer to Figures 4A to 4C When the motor 410 operates in the direction that opens the trunk lid 10 and thus applies rotational force to the articulated arm 100, the articulated arm 100 rotates counterclockwise relative to the articulated bracket 30, and the motor assembly 400 rotates clockwise together with the articulated arm 100.

[0062] On the other hand, when the motor 410 operates in the direction of closing the trunk lid 10, the hinge arm 100 rotates clockwise relative to the hinge bracket 30, and the motor assembly 400 rotates counterclockwise together with the hinge arm 100.

[0063] That is, when the motor 410 operates in the direction of opening the trunk lid 10, the rotational boundary of the motor assembly 400 moves downward to a position not lower than the rotational boundary of the hinge arm 100, so that the motor assembly 400 is not exposed.

[0064] at the same time, Figure 5 A structural view of a second embodiment of an electric drive unit assembled according to an embodiment of the present invention is shown, and Figure 6 Show Figure 5 The view shown depicts the electric drive unit in a separated state.

[0065] Referring to the accompanying drawings, the electric drive unit can be mounted so that it can rotate relative to the articulated arm 100 in a constrained state when the articulated arm 100 rotates.

[0066] Specifically, the electric drive unit may include: a motor assembly 400, which includes a motor 410 connected to the middle of the articulated arm 100 and a rotating shaft 412 disposed in the middle of the motor housing 400a, the motor 410 being configured to provide rotational force to the articulated arm 100, and the rotating shaft 412 being configured to rotate in a state interlocked with the motor 410; a first motor link 430a, one end of which is connected to the rotating shaft 412; and a second motor link 430b, one end of which is hinged to the other end of the first motor link 430a, and the other end of which is rotatably engaged by the lower end of a torsion bar 300.

[0067] For example, the motor 410 can be installed at the rear upper end of the motor housing 400a, and the worm gear can be installed in the motor housing 400a to rotate by the rotational force of the motor 410.

[0068] Furthermore, an external gear-type worm gear meshing with the worm gear and at least one output gear meshing with the worm gear externally can be installed in the motor housing 400a. The shaft of the final output gear is exposed outside the motor housing 400a. The shaft of the final output gear constitutes the rotating shaft 412.

[0069] Each of the first motor link 430a and the second motor link 430b is formed in a bar shape in the longitudinal direction. The first motor link 430a is fixedly connected to the rotating shaft 412 to transmit the rotational force of the motor to the rotating shaft 412, and the second motor link 430b is engaged by the lower end of the torsion bar 300 and simultaneously hinged to the first motor link 430a.

[0070] That is, when the motor 410 rotates, the rotating shaft 412 rotates through the gear meshing structure in the motor housing 400a. Since the rotating shaft 412 is fixed to the first motor connecting rod 430a, the first motor connecting rod 430a rotates in the same direction as the rotating shaft 412. Since the second motor connecting rod 430b is connected to the torsion bar 300 while being supported by the torsion bar 300, the hinge arm 100 rotates together with the motor assembly 400.

[0071] In addition, refer to Figure 5 and Figure 6 The motor bracket 420 is connected to the opposite side of the hinge arm 100, the motor assembly 400 is assembled between the motor brackets 420, and one end of each torsion bar link 200 is connected to a corresponding side of the opposite side of the hinge arm 100, such that the torsion bar link 200 covers the opposite side surface of the motor bracket 420, thereby allowing the electric drive unit to be disposed between the torsion bar links 200.

[0072] For example, one end of each motor bracket 420 is fixedly connected to a corresponding side of the opposite side of the middle of the hinge arm 100, and the motor assembly 400 is assembled between the other end of one motor bracket 420 and the other end of the other motor bracket 420.

[0073] Furthermore, the torsion bar links 200 are formed to extend longitudinally and connect to opposite sides of the articulated arms 100. One end of each torsion bar link 200 is rotatably connected to the middle of the articulated arms 100, and the motor assembly 400 can move and rotate while located between the torsion bar links 200.

[0074] The middle portion of each torsion bar link 200 extending between one end and the other end is formed to project outward, thereby ensuring the distance between the torsion bar links 200.

[0075] For your reference. Figure 7 Show Figure 5The diagram shows the electric drive unit and torsion bar link 200 separated from the hinge arm 100. The torsion bar link 200 can be coupled to the hinge arm 100 while still connected to the electric drive unit. Alternatively, as in... Figure 6 As shown, with the torsion bar link 200 connected to the hinge arm 100, the electric drive unit can be connected to the torsion bar link 200.

[0076] Furthermore, a first engaging portion 202 with an opening on one side is formed at the other end of each torsion bar 300, such that the lower end of the torsion bar 300 is engaged by the first engaging portion 202. Similarly, a second engaging portion 432 with an opening on one side is formed at the other end of the second motor connecting rod 430b, such that the second engaging portion 432 is engaged by the lower end of the torsion bar 300. The first engaging portion 202 and the second engaging portion 432 may open in different directions.

[0077] Preferably, the first engaging portion 202 and the second engaging portion 432 open in opposite directions.

[0078] For example, one end of a torsion bar 200 is connected to the other end of another torsion bar 200, and a U-shaped first engaging portion 202 is formed at the center of the other end of each torsion bar 200, and the first engaging portion 202 is open in the longitudinal direction of each torsion bar 200.

[0079] The U-shaped second engaging portion 432 is formed at the lower end of the second motor connecting rod 430b, and the second engaging portion 432 opens toward the motor assembly 400.

[0080] The first engaging portion 202 and the second engaging portion 432 are engaged in different directions by the lower end of the torsion bar 300, thereby preventing the torsion bar 300 from separating from the first engaging portion 202 and the second engaging portion 432 during rotation of the articulated arm 100.

[0081] Furthermore, the first motor link 430a and the second motor link 430b can be assembled in an upward or downward direction.

[0082] As an example, such as in Figure 5 As shown, the first motor link 430a can be assembled from one end to the other in a downward direction, and the second motor link 430b can be assembled from the other end to one end in a downward direction, so that the hinged portion of the other end of the first motor link 430a and one end of the second motor link 430b can be assembled in a downward direction.

[0083] As another embodiment, although not shown, the first motor link 430a can be assembled from one end to the other in an upward direction, and the second motor link 430b can be assembled from the other end to one end in an upward direction, so that the hinged portion of the other end of the first motor link 430a and one end of the second motor link 430b can be assembled in an upward direction.

[0084] In the following text, reference will be made to Figures 4A to 4C The operation of the electric trunk device according to a first embodiment of the present invention will be described. When the motor 410 is operated in the direction that opens the trunk lid 10, the rotating shaft 412 rotates clockwise by the rotational force of the motor 410.

[0085] The motor bracket 420 rotates clockwise together with the rotating shaft 412. The result is, as in... Figure 4B As shown, the hinge arm 100, which is connected to the motor bracket 420, rotates counterclockwise around the hinge bracket 30.

[0086] As the rotational force of the motor 410 is continuously applied, the rotation angle of the articulated arm 100 in the counterclockwise direction increases (as in...). Figure 4C (as shown in the diagram), thereby fully opening the trunk lid 10 connected to the hinge arm 100.

[0087] However, when the articulated arm 100 rotates counterclockwise relative to the articulated bracket 30, the motor assembly 400 rotates clockwise together with the articulated arm 100. Therefore, the rotational boundary of the motor assembly 400 moves downward to a level not lower than the rotational boundary of the articulated arm 100, thereby preventing the motor assembly 400 from being exposed.

[0088] Reference Figures 8A to 8C The operation of the electric trunk device according to a second embodiment of the present invention will be described. When the motor 410 is operated in the direction that opens the trunk lid 10, the rotating shaft 412 rotates clockwise by the rotational force of the motor 410.

[0089] With the second motor connecting rod 430b supported by the lower end of the torsion bar connecting rod 200, the first motor connecting rod 430a rotates clockwise together with the rotating shaft 412. As a result, as in Figure 8B As shown, the hinge arm 100, which is connected to the motor bracket 420, rotates counterclockwise around the hinge bracket 30.

[0090] As the rotational force of the motor 410 is continuously applied, the rotation angle of the articulated arm 100 in the counterclockwise direction increases (as in...). Figure 8C (as shown in the diagram), thereby fully opening the trunk lid 10 connected to the hinge arm 100.

[0091] In an embodiment of the invention, as described above, the electric drive unit is mounted between the torsion bar and the hinged arm 100 to form an electric trunk device with an electrically operated opening and closing structure, thereby automatically opening and closing the trunk lid 10. Specifically, the electric drive unit is located inside the trunk along with the torsion bar 300, thus preventing the electric drive unit from being exposed. Therefore, the trunk space is maximized by minimizing the application of luggage trim configured to cover the electric drive unit.

[0092] As can be clearly seen from the above description, the advantages of the embodiments of the present invention are as follows: the electric drive unit is installed between the torsion bar and the hinge arm to form an electric trunk device with an electric opening and closing structure, so that the trunk lid can be opened and closed automatically; the electric drive unit and the torsion bar are located in the trunk, so that the electric drive unit is not exposed to the outside, thus minimizing the use of the trunk trim configured to cover the electric drive unit, thereby maximizing the use of the trunk space.

[0093] Although preferred embodiments of the invention have been described above with reference to the accompanying drawings, those skilled in the art will understand that the invention can be implemented in various other embodiments without changing the technical concept or features of the invention.

Claims

1. An electric tailgate device, comprising: An articulated arm, which is connected to a tailgate and configured to be rotatably connected to a body panel defining a tailgate space, the articulated arm being configured to open and close the tailgate; A torsion bar link, which is rotatably connected to the middle of the hinged arm; A torsion bar is connected in front of the articulated arm between the torsion bar link and the body panel, the torsion bar being configured to provide a spring force in the direction of opening the trunk lid; as well as An electric drive unit, connected between the articulated arm and the torsion bar, is configured to move together with the articulated arm and simultaneously provide rotational force to the articulated arm. The electric drive unit is configured to rotate relative to the articulated arm when the articulated arm rotates. The electric drive unit includes: A motor assembly includes a motor configured to provide rotational force to the articulated arm and a rotating shaft disposed at a first end of a motor housing, the rotating shaft being configured to rotate in a state interlocked with the motor; A first motor bracket, with a first end connected to the middle of the hinge arm and a second end connected to the rotating shaft; and A motor connecting rod, the first end of which is rotatably connected to the second end of the motor housing, and the second end is configured to be rotatably engaged by the lower end of the torsion bar.

2. The electric trunk device according to claim 1, wherein: The hinge arm is bent into a "U" shape, so that the electric drive unit is connected to the middle of the hinge arm; The middle portion of the articulated arm is configured to rotate to face forward of the vehicle when the trunk lid is closed, and the electric drive unit is located in the trunk space in front of the articulated arm.

3. The electric trunk device according to claim 1, wherein: The torsion bar is one of a plurality of torsion bar links; The first motor bracket and the second motor bracket are connected to opposite sides of the hinge arm; The motor assembly is assembled between the first motor bracket and the second motor bracket; The first end of each torsion bar is connected to a corresponding side of the opposite side of the articulated arm, such that the torsion bar covers the opposite side surface of the motor bracket, wherein the electric drive unit is disposed between the torsion bar links.

4. The electric trunk device according to claim 1, wherein: A first engaging portion having an opening on one side is formed at the second end of the torsion bar connecting rod, such that the lower end of the torsion bar is configured to be engaged by the first engaging portion; A second engaging portion having an opening on one side is formed at the second end of the motor connecting rod, such that the second engaging portion is configured to engage with the lower end of the torsion bar; The first engaging portion and the second engaging portion open in different directions.

5. The electric trunk device according to claim 1, wherein, When the articulated arm rotates, the motor assembly is configured to rotate in the opposite direction to the rotation direction of the articulated arm.

6. An electric tailgate device, comprising: An articulated arm, which is connected to a tailgate and configured to be rotatably connected to a body panel defining a tailgate space, the articulated arm being configured to open and close the tailgate; A torsion bar link, which is rotatably connected to the middle of the hinged arm; A torsion bar, which is connected in front of the articulated arm to the torsion bar link and the body panel, the torsion bar being configured to provide a spring force in the direction of opening the trunk lid; as well as An electric drive unit, connected to the articulated arm and the torsion bar, is configured to move with the articulated arm and simultaneously provide a rotational force to the articulated arm. The electric drive unit is also configured to rotate relative to the articulated arm while in a constrained state during rotation. The electric drive unit includes: A motor assembly includes a motor connected to the middle of the articulated arm and a rotating shaft disposed in the middle of the motor housing, the motor being configured to provide rotational force to the articulated arm and the rotating shaft being configured to rotate in a state interlocked with the motor; A first motor connecting rod, the first end of which is connected to the rotating shaft; and The second motor link has its first end hinged to the second end of the first motor link, and the second end is rotatably engaged by the lower end of the torsion bar.

7. The electric tailgate device according to claim 6, further comprising a motor bracket coupled to the opposite side of the articulated arm, wherein: The torsion bar is one of a plurality of torsion bar links; The motor assembly is assembled between the motor brackets; The first end of each torsion bar is connected to a corresponding side of the opposite side of the articulated arm, such that the torsion bar covers the opposite side surface of the motor bracket, wherein the electric drive unit is disposed between the torsion bar links.

8. The electric trunk device according to claim 6, wherein: A first engaging portion having an opening on one side is formed at the second end of the torsion bar connecting rod, such that the lower end of the torsion bar is configured to be engaged by the first engaging portion; A second engaging portion having an opening on one side is formed at the second end of the second motor connecting rod, such that the second engaging portion is configured to engage by the lower end of the torsion bar; The first engaging portion and the second engaging portion open in different directions.

9. The electric trunk device according to claim 6, wherein: The first motor connecting rod is assembled from its first end to its second end in a downward direction; The second motor link is assembled from its second end to its first end in a downward direction, wherein the second end of the first motor link and the first end of the second motor link are hinged to each other in a downward direction.

10. The electric trunk device according to claim 6, wherein: The first motor connecting rod is assembled from its first end to its second end in an upward direction; The second motor link is assembled from its second end to its first end in an upward direction, wherein the second end of the first motor link and the first end of the second motor link are hinged to each other in an upward direction.

11. A vehicle comprising: The vehicle body includes at least one body panel; A trunk lid, which is connected to the at least one body panel; An articulated arm, which is connected to the trunk lid and rotatably connected to the at least one body panel defining a trunk space, the articulated arm being configured to open and close the trunk lid; A torsion bar link, which is rotatably connected to the middle of the hinged arm; A torsion bar, which is connected in front of the articulated arm to the torsion bar link and the body panel, the torsion bar being configured to provide a spring force in the direction of opening the trunk lid; as well as An electric drive unit, connected to the articulated arm and the torsion bar, is configured to move together with the articulated arm and simultaneously provide rotational force to the articulated arm. The electric drive unit is configured to rotate relative to the articulated arm when the articulated arm rotates. The electric drive unit includes: A motor assembly includes a motor configured to provide rotational force to the articulated arm and a rotating shaft disposed at a first end of a motor housing, the rotating shaft being configured to rotate in a state interlocked with the motor; A first motor bracket, with a first end connected to the middle of the hinge arm and a second end connected to the rotating shaft; and A motor connecting rod, the first end of which is rotatably connected to the second end of the motor housing, and the second end is configured to be rotatably engaged by the lower end of the torsion bar.

12. The vehicle according to claim 11, wherein: The hinge arm is bent into a "U" shape, so that the electric drive unit is connected to the middle of the hinge arm; The middle portion of the articulated arm is configured to rotate to face forward of the vehicle when the trunk lid is closed, and the electric drive unit is located in the trunk space in front of the articulated arm.

13. The vehicle according to claim 11, wherein: The torsion bar is one of a plurality of torsion bar links; The first motor bracket and the second motor bracket are connected to opposite sides of the hinge arm; The motor assembly is assembled between the first motor bracket and the second motor bracket; The first end of each torsion bar is connected to a corresponding side of the opposite side of the articulated arm, such that the torsion bar covers the opposite side surface of the motor bracket, wherein the electric drive unit is disposed between the torsion bar links.

14. The vehicle according to claim 11, wherein: A first engaging portion having an opening on one side is formed at the second end of the torsion bar connecting rod, such that the lower end of the torsion bar is configured to be engaged by the first engaging portion; A second engaging portion having an opening on one side is formed at the second end of the motor connecting rod, such that the second engaging portion is configured to engage with the lower end of the torsion bar; The first engaging portion and the second engaging portion open in different directions.

15. The vehicle according to claim 11, wherein, When the articulated arm rotates, the motor assembly is configured to rotate in the opposite direction to the rotation direction of the articulated arm.

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