Power Trunk Mechanism

Abstract

To provide a power trunk mechanism for automatically opening / closing a trunk lid by applying an electrically-driven opening / closing structure.SOLUTION: This power trunk mechanism comprises: a hinge arm coupled to a trunk lid and rotatably coupled to a vehicle body panel forming a trunk space to make the trunk lid openable / closable; a torsion bar ring rotatably coupled to the middle part of the hinge arm; a torsion bar connected between the torsion bar ring and the vehicle body panel in front of the hinge arm to provide an elastic force in the opening direction of the trunk lid; and an electrically-driven drive unit connected between the hinge arm and the torsion bar to move together with the hinge arm while providing a rotational force to the hinge arm.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a power trunk mechanism that automatically opens and closes a trunk lid by applying an electric opening and closing structure to a trunk based on a torsion bar. [Background technology]

[0002] A latch is attached to the trunk lid and a striker is attached to the vehicle body, so that when the trunk lid is closed, the latch engages with the striker and is locked, and then, when the release lever is operated, the latch is released from the striker and the lock is released.

[0003] On the other hand, in the case of a power trunk mechanism that electrically opens the trunk lid, a spring or a gas lifter is used to open the trunk.

[0004] However, a spring-based power trunk mechanism has difficulties in application to a torsion bar-based trunk opening / closing system.

[0005] Here, a trunk opening / closing device using a torsion bar is a system that is mainly applied to heavy passenger vehicles, in which a torsion bar is connected to the vehicle body and a hinge arm, respectively, and the trunk lid is opened by the elastic force of the torsion bar.

[0006] Therefore, there is a need for a power trunk mechanism that is optimized for heavy vehicle packaging with a torsion bar based trunk opening / closing mechanism.

[0007] The matters described above as the background art are intended to enhance understanding of the background of the present invention, and should not be accepted as corresponding to prior art already known to those skilled in the art. [Prior art documents] [Patent documents]

[0008] [Patent Document 1] Korean Patent Registration No. 10-1637805B1 Summary of the Invention [Problem to be solved by the invention]

[0009] The present invention has been devised to solve the problems described above, and has an object to provide a power trunk mechanism that automatically opens and closes the trunk lid by applying an electric opening and closing structure to a torsion bar-based trunk. [Means for solving the problem]

[0010] To achieve the above-mentioned object, the present invention provides a hinge arm that is connected to a trunk lid and rotatably connected to a body panel that defines a trunk space, thereby enabling the trunk lid to be opened and closed; a torsion bar ring that is rotatably connected to the middle of the hinge arm; a torsion bar that is connected between the torsion bar ring and the body panel in front of the hinge arm and provides an elastic force in a direction in which the trunk lid opens; and an electric drive unit that is connected between the hinge arm and the torsion bar and moves together with the hinge arm while providing a rotational force to the hinge arm.

[0011] The hinge arm may be bent in a U-shape, and an electric drive unit may be connected to the middle of the hinge arm. During the process of closing the trunk lid, the middle of the hinge arm may rotate toward the front of the vehicle, and the electric drive unit may be configured to be positioned within the trunk space in front of the hinge arm.

[0012] The electric drive unit may be mounted so as to be rotatable relative to the hinge arm during the rotation of the hinge arm.

[0013] The electric drive unit may include a motor assembly having a motor to provide a rotational force to the hinge arm, the motor assembly having a rotation shaft that rotates in conjunction with the motor and is provided at one end of a motor housing, a motor bracket having one end connected to the middle of the hinge arm and the other end connected to the rotation shaft, and a motor link having one end rotatably connected to the other end of the motor housing and the other end rotatably attached to a lower end of the torsion bar.

[0014] A motor bracket may be coupled to each of both sides of the hinge arm, a motor assembly may be assembled between the motor brackets, one end of a torsion bar ring may be coupled to each of both sides of the hinge arm so as to cover both sides of the motor bracket, and an electric drive unit may be provided between the torsion bar rings.

[0015] A first engagement portion having an opening on one side is formed on the other end of the torsion bar link, a lower end of the torsion bar is engaged with the first engagement portion, a second engagement portion having an opening on one side is formed on the other end of the motor link, the second engagement portion is engaged with the lower end of the torsion bar, and the openings of the first engagement portion and the second engagement portion may be formed in different directions from each other.

[0016] The rotation of the hinge arm may cause the motor assembly to rotate relatively in a direction opposite to the direction of rotation of the hinge arm.

[0017] The electric drive unit may be rotatably mounted on the hinge arm in a constrained manner during the rotation of the hinge arm.

[0018] The electric drive unit may include a motor assembly including a motor connected to a middle of the hinge arm to provide a rotational force to the hinge arm and a rotating shaft that rotates in conjunction with the motor and is provided in a middle of a motor housing; a first motor link having one end connected to the rotating shaft; and a second motor link having one end connected to the other end of the first motor link to have a hinge structure and the other end rotatably attached to a lower end of the torsion bar.

[0019] A motor bracket may be coupled to each of both sides of the hinge arm, a motor assembly may be assembled between the motor brackets, one end of a torsion bar ring may be coupled to each of both sides of the hinge arm so as to cover both sides of the motor bracket, and an electric drive unit may be provided between the torsion bar rings.

[0020] A first engagement portion having an opening on one side is formed at the other end of the torsion bar link, a lower end of the torsion bar is engaged with the first engagement portion, a second engagement portion having an opening on one side is formed at the other end of the second motor link, the second engagement portion is engaged with the lower end of the torsion bar, and the openings of the first engagement portion and the second engagement portion may be formed in different directions from each other.

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

[0022] The first motor link may be assembled in an upward direction from one end to the other end, and the second motor link may be assembled in an upward direction from the other end to the one end, and the other end of the first motor link and one end of the second motor link may be hinged at an upper portion. Effect of the Invention

[0023] As a result of the above-mentioned means for solving the problems, the present invention realizes a power trunk mechanism with an electric opening and closing structure by applying an electric drive unit between the torsion bar and the hinge arm, thereby enabling the trunk lid to be opened and closed automatically. In particular, since the electric drive unit is located inside the trunk together with the torsion bar so that the electric drive unit is not exposed to the outside, the luggage trim for blocking the electric drive unit can be minimized, thereby making it possible to maximize the use of the internal space of the trunk. [Brief description of the drawings]

[0024] [Figure 1] FIG. 2 shows a trunk lid equipped with a power trunk mechanism according to the present invention. [Diagram 2] 1 is a diagram showing the configuration of an assembled first embodiment of an electric drive unit according to the present invention; [Diagram 3] FIG. 3 is a diagram showing a state in which the electric drive unit shown in FIG. 2 is separated. [Figure 4a] 3 is a diagram illustrating an opening operation process of the hinge arm shown in FIG. 2. FIG. [Figure 4b] 3 is a diagram illustrating an opening operation process of the hinge arm shown in FIG. 2. FIG. [Figure 4c] 3 is a diagram for explaining an opening operation process of the hinge arm shown in FIG. 2. FIG. [Diagram 5] FIG. 13 is a diagram showing the configuration of a second embodiment of an assembled electric drive unit according to the present invention. [Figure 6] FIG. 6 is a diagram showing a state in which the electric drive unit shown in FIG. 5 is separated. [Figure 7] 6 is a diagram showing a state in which the electric drive unit and the torsion bearing shown in FIG. 5 are separated from the hinge arm. [Figure 8a] 6 is a diagram illustrating an opening operation process of the hinge arm shown in FIG. 5. FIG. [Figure 8b] 6 is a diagram illustrating an opening operation process of the hinge arm shown in FIG. 5. FIG. [Figure 8c] 6 is a diagram illustrating an opening operation process of the hinge arm shown in FIG. 5. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0025] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0026] FIG. 1 is a view showing a trunk lid to which a power trunk mechanism according to the present invention is attached.

[0027] Referring to the drawings, the present invention comprises a hinge arm 100 which is connected to a trunk lid 10 and rotatably connected to a body panel 20 which defines a trunk space, thereby enabling the trunk lid 10 to be opened and closed; a torsion bar ring 200 which is rotatably connected to the middle of the hinge arm 100; a torsion bar 300 which is connected between the torsion bar ring 200 and the body panel 20 in front of the hinge arm 100 and provides an elastic force in a direction in which the trunk lid 10 opens; and an electric drive unit which is connected between the hinge arm 100 and the torsion bar 300 and moves together with the hinge arm 100 while providing a rotational force to the hinge arm 100.

[0028] For example, hinge brackets 30 are respectively connected in the front-rear direction to both sides of the ceiling forming the interior space of the trunk, and the upper end of a torsion bar 300 formed in a wire shape is hung on the front end of the hinge brackets 30, and the rear end of a hinge arm 100 is hinged to the rear end of the hinge brackets 30.

[0029] The rear end of a torsion bar ring 200 is hinged to the middle of the hinge arm 100, and the lower end of a torsion bar 300 is rotatably supported on the front end of the torsion bar ring 200.

[0030] Therefore, when the hinge arm 100 rotates to open or close the trunk lid 10, the hinge arm 100, the torsion bar ring 200, and the torsion bar 300 rotate around the hinge bracket 30 like a four-joint ring, and the hinge arm 100 rotates accordingly.

[0031] In particular, an electric drive unit is installed between the hinge arm 100 and the torsion bar 300, and a rotational operating force of a motor 410 provided by the electric drive unit is transmitted to the hinge arm 100 to rotate the hinge arm 100.

[0032] In addition, when the hinge arm 100 rotates in the direction in which the trunk lid 10 opens, the elastic force of the torsion bar 300 causes the lower end of the torsion bar 300 to push the lower end of the torsion bar ring 200, thereby assisting the rotational operating force of the electric drive unit that rotates the hinge arm 100.

[0033] That is, by applying an electric drive unit between the torsion bar 300 and the hinge arm 100 to realize a power trunk mechanism having an electric opening and closing structure, the trunk lid 10 can be automatically opened and closed.

[0034] In addition, the present invention may be configured such that the hinge arm 100 is bent into a U shape, an electric drive unit is connected to the middle of the hinge arm 100, and during the process of closing the trunk lid 10, the middle of the hinge arm 100 rotates toward the front of the vehicle, and the electric drive unit is positioned within the trunk space in front of the hinge arm 100.

[0035] That is, the electric drive unit is not exposed to the outside because the torsion bar 300 and the electric drive unit are located inside the trunk. Therefore, the luggage trim for blocking the electric drive unit is minimized, and the internal space of the trunk can be utilized to the maximum.

[0036] FIG. 2 is a diagram showing the configuration of a first embodiment in which an electric drive unit according to the present invention is assembled, and FIG. 3 is a diagram showing a state in which the electric drive unit shown in FIG. 2 is separated.

[0037] Referring to the drawings, the electric drive unit may be attached to the hinge arm 100 so as to be rotatable relative to the hinge arm 100 during the rotation of the hinge arm 100 .

[0038] Specifically, the electric drive unit may include a motor assembly 400 having a motor 410 to provide a rotational force to the hinge arm 100, a rotating shaft 412 that rotates in conjunction with the motor 410 and is provided at one end of a motor housing 400a, a motor bracket 420 having one end connected to the middle of the hinge arm 100 and the other end connected to the rotating shaft 412, and a motor link 430 having one end rotatably connected to the other end of the motor housing 400a and the other end rotatably attached to the lower end of the torsion bar 300.

[0039] For example, a motor 410 may be attached to the rear upper end of the motor housing 400a, and a worm gear may be installed inside the motor housing 400a so as to receive the rotational force of the motor 410 and rotate.

[0040] A worm wheel having an external gear type meshing with the worm gear and at least one output gear meshing with the worm wheel may be installed inside the motor housing 400a. In this case, the shafts of the final output gears are exposed to both outsides of the motor housing 400a, and the shafts of the final output gears become the rotation shaft 412.

[0041] In addition, the motor bracket 420 is formed in a triangular plate shape, and one side bottom surface of the motor bracket 420 is fixedly connected to the middle of the hinge arm 100 by bolting or the like, and the apex portion facing the one side bottom surface of the motor bracket 420 is fixedly connected to the rotation shaft 412, so that the rotation force of the motor 410 is transmitted to the hinge arm 100.

[0042] An upper end of the motor link 430 is hinged to a front end of the motor housing 400 a , and a lower end of the motor link 430 is hung on a lower end of the torsion bar 300 .

[0043] In other words, when the motor 410 rotates, the rotating shaft 412 rotates due to the gear meshing structure inside the motor housing 400a, and 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 allowing the hinge arm 100 connected to the motor bracket 420 to rotate.

[0044] Also, referring to FIG. 2 and FIG. 3, in the present invention, motor brackets 420 are respectively coupled to both sides of the hinge arm 100, a motor assembly 400 is assembled between the motor brackets 420, one end of a torsion bar ring 200 is coupled to both sides of the hinge arm 100 so as to have a shape covering both sides of the motor bracket 420, and an electric drive unit is provided between the two torsion bar rings 200.

[0045] For example, the bottom surfaces of one side of the motor bracket 420 are fixedly connected to both sides of the middle of the hinge arm 100, and the vertices of the motor brackets 420 on both sides are fixedly connected to both ends of the rotation shaft 412 on both sides of the motor housing 400a, thereby assembling the motor assembly 400 between the two motor brackets 420.

[0046] In addition, the torsion bar ring 200 is formed long in the longitudinal direction and is connected to both sides of the hinge arm 100, one end of the torsion bar ring 200 is rotatably connected to the middle of the hinge arm 100, and the middle of the hinge arm 100 may be a part corresponding to the central part of the bottom surface of one side of the motor bracket 420.

[0047] And, a middle portion of the torsion barring 200, which is connected from one end to the other end, is formed to protrude outward to secure a gap between the two torsion barrings 200, so that the motor assembly 400 can move while rotating while being positioned between the two torsion barrings 200.

[0048] In addition, a first engagement portion 202 having an opening on one side is formed at the other end of the torsion bar ring 200, a lower end of the torsion bar 300 is engaged with the first engagement portion 202, a second engagement portion 432 having an opening on one side is formed at the other end of the motor link 430, the second engagement portion 432 is engaged with the lower end of the torsion bar 300, and the openings of the first engagement portion 202 and the second engagement portion 432 may be formed in different directions.

[0049] Preferably, the opening direction of the first engaging portion 202 and the opening direction of the second engaging portion 432 may be formed in opposite directions.

[0050] For example, the torsion barring 200 provided on both sides are connected at the other end, and a 'U' shaped first engaging portion 202 is formed at the center of the other end of the torsion barring 200, and the opening direction of the first engaging portion 202 is formed in the longitudinal direction of the torsion barring 200.

[0051] A U-shaped second engaging portion 432 is formed at the lower end of the motor link 430 , and an opening direction of the second engaging portion 432 faces the motor assembly 400 .

[0052] Therefore, since the first engagement portion 202 and the second engagement portion 432 are engaged in different directions at the lower end of the torsion bar 300, it is possible to prevent the torsion bar 300 from coming off the first engagement portion 202 and the second engagement portion 432 during the rotation of the hinge arm 100.

[0053] In addition, in the present invention, the motor assembly 400 can rotate in a direction opposite to the direction of rotation of the hinge arm 100 relative to the hinge arm 100 by the rotation of the hinge arm 100 .

[0054] 4a to 4c, when the motor 410 is operated in a direction to open the trunk lid 10 and a rotational force is applied to the hinge arm 100, if the hinge arm 100 rotates counterclockwise relative to the hinge bracket 30, the motor assembly 400 rotates together with the hinge arm 100 in the rotational direction and rotates clockwise.

[0055] Of course, when the motor 410 is operated in a direction to close the trunk lid 10, the hinge arm 100 rotates clockwise relative to the hinge bracket 30, and the motor assembly 400 rotates together with the hinge arm 100 in the rotational direction, thereby rotating counterclockwise.

[0056] That is, when the hinge arm 100 rotates in the opening direction of the trunk lid 10, the rotation boundary of the motor assembly 400 is smaller than the rotation boundary of the hinge arm 100 and moves downward, so that the motor assembly 400 is not exposed to the outside.

[0057] Meanwhile, FIG. 5 is a diagram showing the configuration of a second embodiment in which an electric drive unit according to the present invention is assembled, and FIG. 6 is a diagram showing a state in which the electric drive unit shown in FIG. 5 is separated.

[0058] Referring to the drawings, the electric drive unit may be rotatably attached to the hinge arm 100 in a constrained state during the rotation of the hinge arm 100.

[0059] Specifically, the electric drive unit may include a motor assembly 400 having a motor 410 connected to the middle of the hinge arm 100 to provide a rotational force to the hinge arm 100 and a rotating shaft 412 that rotates in conjunction with the motor 410 and is provided in the middle of a motor housing 400a, a first motor link 430a having one end connected to the rotating shaft 412, and a second motor link 430b having one end connected to the other end of the first motor link 430a to have a hinge structure and the other end rotatably attached to the lower end of the torsion bar 300.

[0060] For example, a motor 410 may be attached to the rear upper end of the motor housing 400a, and a worm gear may be installed inside the motor housing 400a so as to receive the rotational force of the motor 410 and rotate.

[0061] A worm wheel having an external gear type meshing with the worm gear and at least one output gear meshing with the worm wheel may be installed inside the motor housing 400a. Here, the shafts of the final output gears are exposed to both outsides of the motor housing 400a, and the shafts of the final output gears become the rotation shaft 412.

[0062] In addition, the first motor link 430a and the second motor link 430b are formed to have a bar shape that is elongated in the longitudinal direction, the first motor link 430a is fixedly connected to the rotation shaft 412 to transmit the rotational force of the motor 410, and the second motor link 430b is hingedly connected to the first motor link 430a and is attached to the lower end of the torsion bar 300.

[0063] In other words, when the motor 410 rotates, the rotating shaft 412 rotates due to the gear meshing structure inside the motor housing 400a. Since the rotating shaft 412 is fixed to the first motor link 430a, the first motor link 430a rotates in the same direction as the rotating shaft 412, and since the second motor link 430b is connected in a supported state to the torsion bar 300, the hinge arm 100 can rotate together with the motor assembly 400.

[0064] 5 and 6, in the present invention, motor brackets 420 are respectively coupled to both sides of the hinge arm 100, a motor assembly 400 is assembled between the motor brackets 420, one end of a torsion bar ring 200 is coupled to both sides of the hinge arm 100 so as to cover both sides of the motor bracket 420, and an electric drive unit is provided between the two torsion bar rings 200.

[0065] For example, one end of a motor bracket 420 is fixedly coupled to each of the two intermediate sides of the hinge arm 100, and the motor assembly 400 is assembled between the other ends of the motor brackets 420.

[0066] In addition, the torsion bar ring 200 is formed long in the longitudinal direction and is connected to both sides of the hinge arm 100. One end of the torsion bar ring 200 is rotatably connected to the middle of the hinge arm 100, and the motor assembly 400 is located between the two torsion bar rings 200 and can move while rotating.

[0067] Here, the torsion barring 200 has a middle portion extending from one end to the other end thereof so as to protrude outward, thereby ensuring a gap between the two torsion barrings 200 .

[0068] For reference, FIG. 7 is a diagram showing the electric drive unit and torsion barring 200 shown in FIG. 5 separated from the hinge arm 100. The torsion barring 200 can be coupled to the electric drive unit while it is still connected to the hinge arm 100, or the electric drive unit can be coupled to the torsion barring 200 while it is still connected to the hinge arm 100 as shown in FIG. 6.

[0069] In addition, a first engagement portion 202 having an opening on one side is formed at the other end of the torsion bar link 200, a lower end of the torsion bar 300 is engaged with the first engagement portion 202, a second engagement portion 432 having an opening on one side is formed at the other end of the second motor link 430b, the second engagement portion 432 is engaged with the lower end of the torsion bar 300, and the openings of the first engagement portion 202 and the second engagement portion 432 may be formed in different directions.

[0070] Preferably, the opening direction of the first engaging portion 202 and the opening direction of the second engaging portion 432 may be formed in opposite directions.

[0071] For example, the torsion barring 200 provided on both sides are connected at the other end, and a 'U' shaped first engaging portion 202 is formed at the center of the other end of the torsion barring 200, and the opening direction of the first engaging portion 202 is formed to face the longitudinal direction of the torsion barring 200.

[0072] A U-shaped second engaging portion 432 is formed at the lower end of the second motor link 430 b , and an opening direction of the second engaging portion 432 faces the motor assembly 400 .

[0073] Therefore, since the first engagement portion 202 and the second engagement portion 432 are engaged in different directions at the lower end of the torsion bar 300, it is possible to prevent the torsion bar 300 from coming off the first engagement portion 202 and the second engagement portion 432 during the rotation of the hinge arm 100.

[0074] In addition, in the present invention, the first motor link 430a and the second motor link 430b can be assembled facing upward or downward.

[0075] As a preferred example, as shown in FIG. 5, the first motor link 430a may be assembled in a downward direction from one end to the other end, and the second motor link 430b may be assembled in a downward direction from the other end to one end, and the hinge connection portions of the other end of the first motor link 430a and one end of the second motor link 430b may be connected to face downward.

[0076] As another example, although not shown in the drawings, the first motor link 430a may be assembled in a direction that rises from one end to the other end, and the second motor link 430b may be assembled in a direction that rises from the other end to one end, and the hinge connection portions of the other end of the first motor link 430a and one end of the second motor link 430b may be connected to face upward.

[0077] Hereinafter, the operating process of the power trunk mechanism of the first embodiment of the present invention will be described with reference to Figures 4a to 4c. When the motor 410 operates in a direction to open the trunk lid 10, the rotating shaft 412 rotates clockwise due to the rotational force of the motor 410.

[0078] Therefore, when the motor bracket 420 rotates clockwise together with the rotating shaft 412, the hinge arm 100 coupled to the motor bracket 420 rotates counterclockwise around the hinge bracket 30 as shown in FIG. 4b.

[0079] Therefore, the rotational force of the motor 410 is continuously applied, and the counterclockwise rotation angle of the hinge arm 100 increases as shown in FIG. 4c, thereby allowing the trunk lid 10 connected to the hinge arm 100 to be completely opened.

[0080] However, when the hinge arm 100 rotates counterclockwise relative to the hinge bracket 30, the motor assembly 400 rotates together with the hinge arm 100 in the rotational direction thereof, and as a result of rotating clockwise, the rotational boundary of the motor assembly 400 is relatively smaller and faces downward than the rotational boundary of the hinge arm 100, and therefore the motor assembly 400 is not exposed to the outside.

[0081] Meanwhile, referring to Figures 8a to 8c, the operating process of the power trunk mechanism of the second embodiment of the present invention will be described. When the motor 410 operates in a direction to open the trunk lid 10, the rotating shaft 412 rotates clockwise due to the rotational force of the motor 410.

[0082] Therefore, with the second motor link 430b supported on the lower end of the torsion barring 200, the first motor link 430a rotates clockwise together with the rotating shaft 412, causing the hinge arm 100 connected to the motor bracket 420 to rotate counterclockwise around the hinge bracket 30 as shown in FIG. 8b.

[0083] Therefore, the rotational force of the motor 410 is continuously applied, and the counterclockwise rotation angle of the hinge arm 100 increases as shown in FIG. 8c, thereby allowing the trunk lid 10 connected to the hinge arm 100 to be completely opened.

[0084] As described above, the present invention applies an electric drive unit between the torsion bar and the hinge arm 100 to realize a power trunk mechanism with an electric opening and closing structure, thereby enabling the trunk lid 10 to be automatically opened and closed. In particular, since the electric drive unit is located inside the trunk together with the torsion bar 300 and is not exposed to the outside, the luggage trim for blocking the electric drive unit can be minimized, thereby maximizing the use of the internal space of the trunk.

[0085] Meanwhile, the present invention has been described in detail only with reference to the above-mentioned specific examples, but it will be apparent to those skilled in the art that various modifications and variations are possible within the technical scope of the present invention, and it goes without saying that such modifications and variations are within the scope of the appended claims. [Explanation of symbols]

[0086] 10 Trunk lid 20 Body Panel 30 Hinge bracket 100 Hinge Arm 200 Torsion Barring 202 First engagement part 300 Torsion bar 400 Motor Assembly 400a motor housing 410 Motor 412 Rotational Axis 420 motor bracket 430 Motor Link 430a 1st motor link 430b 2nd motor link 432 Second engagement part

Claims

1. a hinge arm connected to the trunk lid and rotatably connected to a body panel defining a trunk space, thereby enabling the trunk lid to be opened and closed; a torsion bar ring rotatably connected to the middle of the hinge arm; a torsion bar connected between the torsion bar ring and a vehicle body panel in front of the hinge arm to provide an elastic force in a direction in which the trunk lid opens; an electric drive unit connected between the hinge arm and the torsion bar and moving together with the hinge arm while providing a rotational force to the hinge arm; A power trunk mechanism, wherein the electric drive unit is mounted so as to be rotatable relative to the hinge arm during a rotation process of the hinge arm.

2. The hinge arm is bent in a U-shape, and an electric drive unit is connected to the middle of the hinge arm.

2. The power trunk mechanism according to claim 1, wherein the middle of the hinge arm rotates toward the front of the vehicle during a process of closing the trunk lid, so that the electric drive unit is positioned in front of the hinge arm within the trunk space.

3. The electric drive unit includes: a motor assembly including a motor for providing a rotational force to the hinge arm, the motor assembly including a rotation shaft that rotates in conjunction with the motor and is provided at one end of a motor housing; a motor bracket having one end connected to a middle of the hinge arm and the other end connected to the rotation shaft; 2. The power trunk mechanism according to claim 1, further comprising: a motor link having one end rotatably coupled to the other end of the motor housing and the other end rotatably hanging on the lower end of the torsion bar.

4. A motor bracket is coupled to each side of the hinge arm, A motor assembly is assembled between the motor brackets; 4. The power trunk mechanism according to claim 3, wherein one end of a torsion bar is connected to both sides of the hinge arm so as to have a shape covering both sides of the motor bracket, and an electric drive unit is provided between the two torsion bar.

5. A first engaging portion having an open shape on one side is formed on the other end of the torsion bar ring, and a lower end of the torsion bar is engaged with the first engaging portion, 4. The power trunk mechanism according to claim 3, wherein a second engagement portion having an opening on one side is formed at the other end of the motor link, the second engagement portion is engaged with a lower end of a torsion bar, and the openings of the first engagement portion and the second engagement portion are formed in different directions from each other.

6. 4. The power trunk mechanism of claim 3, wherein the rotation of the hinge arm causes a motor assembly to rotate in a direction opposite to the direction of rotation of the hinge arm.

7. A hinge arm that is connected to the trunk lid and rotatably connected to a body panel that defines a trunk space, thereby enabling the trunk lid to be opened and closed; a torsion bar ring rotatably connected to the middle of the hinge arm; a torsion bar connected between the torsion bar ring and a vehicle body panel in front of the hinge arm to provide an elastic force in a direction in which the trunk lid opens; an electric drive unit connected between the hinge arm and the torsion bar and moving together with the hinge arm while providing a rotational force to the hinge arm; A power trunk mechanism, wherein the electric drive unit is rotatably attached to the hinge arm while being constrained against the hinge arm during the rotation of the hinge arm.

8. The electric drive unit includes: a motor assembly including a motor coupled to an intermediate portion of the hinge arm to provide a rotational force to the hinge arm, and a rotation shaft coupled to the motor and disposed at an intermediate portion of a motor housing; a first motor link having one end coupled to the rotary shaft; 8. The power trunk mechanism according to claim 7, further comprising: a second motor link, one end of which is connected to the other end of the first motor link so as to have a hinge structure, and the other end of which is rotatably attached to the lower end of the torsion bar.

9. A motor bracket is coupled to each side of the hinge arm, A motor assembly is assembled between the motor brackets; 9. The power trunk mechanism according to claim 8, wherein one end of a torsion bar is connected to both sides of the hinge arm so as to have a shape covering both sides of the motor bracket, and an electric drive unit is provided between the two torsion bar.

10. A first engaging portion having an open shape on one side is formed on the other end of the torsion bar ring, and a lower end of the torsion bar is engaged with the first engaging portion, 9. The power trunk mechanism according to claim 8, wherein a second engagement portion having an opening on one side is formed at the other end of the second motor link, the second engagement portion is engaged with a lower end of a torsion bar, and the openings of the first engagement portion and the second engagement portion are formed in different directions from each other.

11. The first motor link is assembled in a downward direction from one end to the other end, 9. The power trunk mechanism according to claim 8, wherein the second motor link is assembled in a downward direction from the other end to one end, and the other end of the first motor link and one end of the second motor link are hinged below.

12. The first motor link is assembled in an upward direction from one end to the other end, 9. The power trunk mechanism according to claim 8, wherein the second motor link is assembled in an upward direction from the other end to one end, and the other end of the first motor link and one end of the second motor link are hinged at the top.

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