Device for automatically opening and closing a trunk lid

Abstract

The present invention relates to a device for automatically opening and closing a trunk lid, the device comprising: an actuator having a first end configured to be coupled to a vehicle body and a second end configured to be coupled to an articulating arm coupled to a trunk lid; a close trigger link having a first end rotatably coupled to the actuator; an open trigger link rotatably coupled to the close trigger link; a spring assembly pin having a first end coupled to the close trigger link and the open trigger link; and a spring having a first end coupled to a second end of the spring assembly pin and a second end configured to be coupled to the vehicle body or a panel configured to be mounted on the vehicle body.

Description

Technical Field

[0001] The present invention relates to a device for automatically opening and closing the trunk lid of a vehicle. Background Technology

[0002] Figure 1 The diagram schematically illustrates the opening and closing mechanism of a conventional and general trunk lid.

[0003] The trunk of a car is a space located at the rear of the vehicle used for storing goods and is equipped with a trunk lid that can be opened or closed.

[0004] The design and style of the trunk lid may vary, but a trunk lid typically has a panel shape that is curved to cover the upper and rear sides of the trunk compartment and is connected to the vehicle body by an articulated arm 14 to open or close as the articulated arm rotates.

[0005] A striker and a latch 11 are respectively installed on the edge of the trunk lid and the body, which are used to control the opening of the trunk lid when it is closed. The latch 11 is connected to the latch actuator 12 via a cable, and when the striker disengages from the latch 11, a lifter such as a gas lifter 13 and a torsion bar is added to raise the trunk lid.

[0006] To improve user convenience, an electric tailgate is a device that uses the force of an electric motor to open and close the tailgate lid, and is configured to allow the tailgate lid to be opened or closed using a switch or remote control attached to the vehicle body.

[0007] As shown in the figure, the electric trunk has one end connected to the trunk lid and the other end connected to the articulated arm 14 (which is connected to the vehicle body) to be rotatable. When the striker disengages from the latch, the gas lifter 13 extends to open the trunk lid, and the trunk lid is closed by the operation of the drive unit 15 overcoming the spring force of the gas lifter 13.

[0008] The drive unit 15 is configured by connecting a motor, a control unit and a gear mechanism.

[0009] However, there are limitations to applying electric tailgates only to luxury cars due to their high cost and weight, and they also generate noise due to the large motor.

[0010] The above description is intended to help understand the relevant technology of this invention, and may include content previously unknown to those skilled in the art to which this invention pertains. Summary of the Invention

[0011] An embodiment of the present invention provides a device that can smoothly and automatically open and close a trunk lid without a large motor.

[0012] According to one embodiment of the present invention, a device for automatically opening and closing a trunk lid includes: an actuator having one end connected to a vehicle body and the other end connected to a hinged arm connected to the trunk lid; a closing trigger link having one end rotatably connected to the actuator; an opening trigger link having one end rotatably connected to the closing trigger link; a spring assembly pin having one end connected to the closing trigger link and the opening trigger link; and a spring having one end connected to the other end of the spring assembly pin and the other end connected to the vehicle body or a panel mounted on the vehicle body.

[0013] Furthermore, the closing trigger link includes a rotating part and a closing reaction force part, the rotating part having one end connected to the actuator, and the closing reaction force part being formed to extend from the other end of the rotating part.

[0014] Furthermore, the opening trigger linkage includes an opening reaction force portion and a constraint portion, wherein the opening reaction force portion has one end connected to the other end of the rotating portion, and the constraint portion is formed to extend from one end of the opening reaction force portion.

[0015] Here, one end of the spring assembly pin is connected to the other end of the rotating part and one end of the opening reaction force part.

[0016] Furthermore, the protruding pins are respectively fastened to one end of the rotating part and the edge of the restraining part, and the device for automatically opening and closing the trunk lid may further include a linkage spring having one end of the protruding pin connected to the rotating part and the other end of the protruding pin connected to the restraining part.

[0017] Therefore, the protruding pin connected to the constraint part is fastened to penetrate the edge of the constraint part, and has one end connected to the connecting rod spring and the other end in contact with the closing trigger link during the rotation operation of the constraint part.

[0018] At the same time, when the closing trigger linkage rotates counterclockwise, the opening reaction force applies thrust to the vehicle body or the panel mounted on the vehicle body.

[0019] Alternatively, when the closing trigger linkage rotates clockwise, the closing reaction force applies thrust to the vehicle body or a panel mounted on the vehicle body.

[0020] Next, according to another embodiment of the present invention, a device for automatically opening and closing a trunk lid includes: an actuator having one end connected to a vehicle body and the other end connected to an articulated arm connected to the trunk lid; a closing trigger link including a rotating portion and a closing reaction portion, the rotating portion having one end rotatably connected to the actuator, the closing reaction portion being formed to extend from the other end of the rotating portion; and an opening trigger link including an opening reaction portion and a restraining portion, the opening reaction portion having one end rotatably connected to the other end of the rotating portion, the restraining portion being formed to extend from the end of the opening reaction portion.

[0021] Furthermore, when the closing trigger linkage rotates counterclockwise, the opening reaction force applies thrust to the vehicle body or the panel mounted on the vehicle body.

[0022] Furthermore, when the closing trigger linkage rotates clockwise, the closing reaction force applies thrust to the vehicle body or the panel mounted on the vehicle body.

[0023] Furthermore, the device for automatically opening and closing the trunk lid may further include: a spring assembly pin having one end connected to the other end of the rotating part and one end of the opening reaction force part; and a spring having one end connected to the other end of the spring assembly pin and the other end connected to the vehicle body or a panel mounted on the vehicle body.

[0024] Furthermore, the protruding pins are respectively fastened to one end of the rotating part and the edge of the restraining part, and the device for automatically opening and closing the trunk lid may further include a linkage spring having one end of the protruding pin connected to the rotating part and the other end of the protruding pin connected to the restraining part.

[0025] Furthermore, the protruding pin connected to the restraint part is fastened to penetrate the edge of the restraint part, and has one end connected to the connecting rod spring and the other end in contact with the rotating part during the rotation operation of the restraint part.

[0026] The device for automatically opening and closing the trunk lid according to the embodiments of this aspect can utilize a compact motor to reduce vehicle weight and manufacturing costs.

[0027] Therefore, the device for automatically opening and closing the trunk lid according to an embodiment of the present invention can also be applied to small and medium-sized vehicles, thereby improving consumer convenience. Attached Figure Description

[0028] Figure 1 The diagram schematically illustrates a typical automatic opening and closing mechanism for a trunk lid.

[0029] Figure 2The diagram schematically illustrates a device for automatically opening and closing a trunk lid according to an embodiment of the present invention.

[0030] Figure 3 yes Figure 2 An enlarged schematic diagram of part A is shown in the figure.

[0031] Figure 4A and Figure 4B The side profile of one configuration of a device for automatically opening and closing a trunk lid according to an embodiment of the present invention is shown, wherein, Figure 4A The interior of a portion of this configuration is shown.

[0032] Figure 5 The operational relationships of a device for automatically opening and closing a trunk lid according to an embodiment of the present invention are shown.

[0033] Figures 6 to 13 The operational states of the device for automatically opening and closing the trunk lid according to an embodiment of the present invention are shown in sequence. Detailed Implementation

[0034] To fully understand the present invention, its operational advantages, and the objectives achieved through the practice of the present invention, reference should be made to the accompanying drawings, which illustrate preferred exemplary embodiments of the invention, and the contents shown in the drawings.

[0035] In describing preferred exemplary embodiments of the present invention, descriptions of known technologies or repetitive descriptions that could unnecessarily obscure the gist of the invention will be reduced or omitted.

[0036] Figure 2 The diagram schematically illustrates a device for automatically opening and closing a trunk lid according to an embodiment of the present invention. Figure 3 yes Figure 2 An enlarged schematic diagram of part A is shown in the figure.

[0037] also, Figure 4A and Figure 4B The side profile of one configuration of a device for automatically opening and closing a trunk lid according to an embodiment of the present invention is shown, wherein, Figure 4A The interior of a portion of this configuration is shown, and Figure 5 The operational relationships of a device for automatically opening and closing a trunk lid according to an embodiment of the present invention are shown.

[0038] The following text will refer to Figures 2 to 5 This invention describes an apparatus for automatically opening and closing a trunk lid according to an exemplary embodiment of the present invention.

[0039] The present invention relates to a device for automatically opening and closing a trunk lid, and is a device capable of automatically opening and closing a trunk lid by means of a compact actuator, without the need for a drive unit as in the prior art.

[0040] In other words, when the actuator 110 is operated, the closing trigger link 120 and the opening trigger link 130 rotate together, causing the trunk lid to be operated to close or open.

[0041] The actuator 110 has a motor housing 114 connected to the hinge arm 14, and a motor 111, a first gear 112 and a second gear 113 embedded in the motor housing 114.

[0042] The motor housing 114 is adjacent to the vehicle body side of the articulated arm 14. The first gear 112 and the second gear 113 mesh with each other to be operated by the operation of the motor 111. The closing trigger link 120, which is connected to the motor rotating shaft 115, which is the rotating shaft of the second gear 113, rotates.

[0043] The closing trigger linkage 120 has one end rotatably connected to the motor rotating shaft 115, and consists of a rotating part 121 and a closing reaction force part 122.

[0044] That is, the rotating part 121 has one end rotatably connected to the motor rotating shaft 115. Therefore, the rotating part 121 rotates by the operation of the actuator 110, and a closed reaction force part 122 is formed at the other end of the rotating part 121, which bends and extends from the other end.

[0045] Furthermore, one end of the opening reaction force portion 131 of the opening trigger link 130 is rotatably connected to the other end of the rotating portion 121 of the closing trigger link 120, and the other end of the opening reaction force portion 131 is formed to extend toward the vehicle body. In addition, a constraint portion 132 is formed at one end of the opening reaction force portion 131 and extends from that end.

[0046] Therefore, the other end of the rotating part 121 of the closing trigger link 120 is connected to one end of the opening reaction force part 131 of the opening trigger link 130, so that when the closing trigger link 120 rotates, the opening trigger link 130 also rotates together.

[0047] Furthermore, the spring assembly pin 140 is connected to the other end of the rotating part 121 and one end of the opening reaction force part 131, so that the opening reaction force part 131 rotates around the spring assembly pin 140.

[0048] In addition, one end of the spring 150 is connected to the spring assembly pin 140 via the bushing 151, and the other end of the spring 150 is connected to the trunk lid, thereby generating a spring force when the trunk lid is opened and closed.

[0049] As described above, the device for automatically opening and closing a trunk lid according to an embodiment of the present invention has such a trigger mechanism structure: it can utilize a compact actuator to achieve stable opening and closing performance in the technology of automatically opening and closing the trunk lid by changing the layout of the spring. Among them, when opening the trunk lid, the trunk is opened by the spring force, and when closing the trunk lid, the trunk is closed by its own force generated by its own weight.

[0050] That is to say, assuming that the counterclockwise torque based on the spring is set as Ms, and the clockwise torque based on the weight of the trunk is set as Mt, when opening the trunk, Ms > Mt appears, so that the trunk is opened by the spring force, and when closing the trunk, Ms < Mt appears, so that the trunk is closed by its own force generated by the weight of the trunk itself.

[0051] In addition, in order to transfer a smoother operation and force during the opening and closing operations of the trunk, an additional panel is formed on the vehicle body, and the closing trigger link and the opening trigger link push the panel, thereby generating an additional rotational force through the reaction force.

[0052] At the same time, the protruding pin 171 is fastened to one end of the rotating part 121 of the closing trigger link 120, and the protruding pin 172 is also fastened to the edge of the restraining part 132 of the opening trigger link 130.

[0053] Therefore, both ends of the link spring 160 are connected to the protruding pin 171 (which is connected to the rotating part 121) and the protruding pin 172 (which is connected to the restraining part 132), and as Figure 5 shown, when the opening trigger link 130 rotates counterclockwise around the spring assembly pin 140, the restoring force caused by the link spring 160 is applied to the opening trigger link 130.

[0054] In addition, the restoring force is used to prevent the clockwise rotation of the opening trigger link 130. That is, the protruding pin 172 connected to the restraining part 132 is connected to penetrate the edge of the restraining part 132, so that the restraining part 132 (the protruding pin 172) can have one end connected to the link spring 160, and the other end that contacts the closing trigger link 120 during clockwise rotation, thereby preventing clockwise rotation.

[0055] Next, Figures 6 to 13 The operating states of the device for automatically opening and closing a trunk lid according to an embodiment of the present invention are shown in sequence. The operating states of the device for automatically opening and closing a trunk lid according to an embodiment of the present invention will be described with reference to Figures 6 to 13 the following.

[0056] First, Figure 6The closed state where Mt > Ms is shown. In this state, the actuator operates by an opening instruction such that when the motor rotating shaft 115 rotates counterclockwise, as Figure 7 shown, the closing trigger link 120 coupled to the motor rotating shaft 115 rotates, and the opening trigger link 130 coupled to the closing trigger link 120 rotates together. At this time, the state where Mt < Ms appears.

[0057] Now, the opening reaction force portion 131 of the rotating opening trigger link 130 contacts the front side panel P1 mounted on the vehicle body, and as Figure 8 shown, pushes the front side panel P1 to generate a reaction force F, such that the state where Mt < Ms + F appears, thereby improving the opening stability.

[0058] Then, as Figure 9 shown, the actuator 110, the closing trigger link 120, and the opening trigger link 130 rotate completely, such that the hinge arm 14 rotates, thus causing the trunk lid to change to the fully opened state. At this time, the trunk lid operates more smoothly to the Figure 9 shown initial state by the restoring force of the link spring 160.

[0059] As described above, in the Figure 10 shown opened state, the state where Mt < Ms is achieved by the compressed spring 150, and the actuator is operated by a closing instruction such that when the motor rotating shaft 115 rotates clockwise, as Figure 11 shown, the closing trigger link 120 coupled to the motor rotating shaft 115 rotates clockwise, and the opening trigger link 130 coupled to the closing trigger link 120 rotates together. At this time, the state where Mt > Ms is achieved.

[0060] Now, the closing reaction force portion 122 of the rotating closing trigger link 120 contacts the rear side panel P2 mounted on the vehicle body, and as Figure 12 shown, pushes the rear side panel P2 to generate a reaction force F, such that the state where Mt > Ms - F appears, thereby improving the closing stability.

[0061] Then, as Figure 13 shown, the actuator 110, the closing trigger link 120, and the opening trigger link 130 rotate completely clockwise, such that the hinge arm 14 rotates, causing the trunk lid to become the fully closed state by its own weight.

[0062] Meanwhile, when the trunk lid is manually closed by a third - party use or the intention of the customer, when the trunk lid is closed about 95%, the opening trigger link contacts the panel, and when the trunk lid is fully closed, the opening trigger link rotates counterclockwise along the shaft mounted on the closing trigger link, and then as Figure 7As shown, the linkage spring 160 returns to the initial position, while the actuator returns to the position where it was opened.

[0063] As described above, the device for automatically opening and closing a trunk lid according to an embodiment of the present invention can use a compact actuator to smoothly and automatically open and close the trunk lid.

[0064] As described above, the invention has been described with reference to exemplary drawings; however, the invention is not limited to the described exemplary embodiments, and it will be apparent to those skilled in the art that various modifications and alterations can be made to the invention without departing from its spirit and scope. For example, a fixing component referred to in the specification as a vehicle body can be an assembly fixed to a vehicle body such as a vehicle body, a panel separately mounted on the vehicle body, or a bracket. Therefore, examples of such modifications or alterations fall within the scope of the claims of the invention, and the scope of the invention should be interpreted based on the appended claims.

Claims

1. A device for automatically opening and closing a trunk lid, the device comprising: An actuator configured to be coupled to a hinged arm, which is coupled to a trunk lid; A closing trigger linkage having a first end rotatably connected to the actuator; The open trigger link is rotatably connected to the closed trigger link; A spring assembly pin having a first end connected to the closing trigger link and the opening trigger link; as well as A spring having a first end connected to a second end of the spring assembly pin and a second end configured to be connected to a vehicle body or for mounting on a panel on a vehicle body. The closing trigger link includes: A rotating part having a first end connected to the actuator; and The closing reaction force section is formed to extend from the second end of the rotating section.

2. The device for automatically opening and closing a trunk lid according to claim 1, wherein, The opening trigger linkage includes: The reaction force section is opened, having a first end connected to the second end of the rotating section; and The constraint portion is formed to extend from the first end of the opening reaction force portion.

3. The device for automatically opening and closing a trunk lid according to claim 2, wherein, The first end of the spring assembly pin is connected to the second end of the rotating part and the first end of the opening reaction force part.

4. The device for automatically opening and closing a trunk lid according to claim 2, further comprising: A first protruding pin and a second protruding pin, the first protruding pin being fastened to the first end of the rotating part, and the second protruding pin being fastened to the edge of the restraining part; as well as A connecting rod spring having a first end connected to the first protruding pin and a second end connected to the second protruding pin.

5. The device for automatically opening and closing a trunk lid according to claim 4, wherein, The second protruding pin connected to the constraint part is fastened to penetrate the edge of the constraint part, and has a first end connected to the linkage spring and a second end that contacts the closing trigger linkage during the rotation operation of the constraint part.

6. The device for automatically opening and closing a trunk lid according to claim 2, wherein, When the closing trigger linkage rotates counterclockwise, the opening reaction force unit is configured to apply thrust to the vehicle body or a panel mounted on the vehicle body.

7. The device for automatically opening and closing a trunk lid according to claim 2, wherein, When the closing trigger linkage rotates clockwise, the closing reaction force unit is configured to apply thrust to the vehicle body or is configured to be a panel mounted on the vehicle body.

8. A device for automatically opening and closing a trunk lid, the device comprising: An actuator configured to be coupled to a hinged arm, which is coupled to a trunk lid; A closing trigger linkage includes a rotating portion and a closing reaction force portion, the rotating portion having a first end rotatably connected to the actuator, and the closing reaction force portion being formed to extend from a second end of the rotating portion; as well as The trigger linkage is opened, which includes an opening reaction force part and a constraint part. The opening reaction force part has a first end that is rotatably connected to a second end of the rotating part, and the constraint part is formed to extend from the first end of the opening reaction force part.

9. The device for automatically opening and closing a trunk lid according to claim 8, wherein, When the closing trigger linkage rotates counterclockwise, the opening reaction force unit is configured to apply thrust to the vehicle body or is configured to be a panel mounted on the vehicle body.

10. The device for automatically opening and closing a trunk lid according to claim 9, wherein, When the closing trigger linkage rotates clockwise, the closing reaction force unit is configured to apply thrust to the vehicle body or is configured to be a panel mounted on the vehicle body.

11. The device for automatically opening and closing a trunk lid according to claim 10, further comprising: A spring assembly pin having a second end connected to the rotating part and a first end connected to the first end of the opening reaction force part; as well as A spring having a first end connected to a second end of the spring assembly pin and a second end configured to be connected to a vehicle body or for mounting on a panel on a vehicle body.

12. The device for automatically opening and closing a trunk lid according to claim 11, further comprising: A first protruding pin and a second protruding pin, the first protruding pin being fastened to the first end of the rotating part, and the second protruding pin being fastened to the edge of the restraining part; as well as A connecting rod spring having a first end connected to the first protruding pin and a second end connected to the second protruding pin.

13. The device for automatically opening and closing a trunk lid according to claim 12, wherein, The second protruding pin connected to the constraint part is fastened to penetrate the edge of the constraint part, and has a first end connected to the connecting rod spring and a second end that contacts the rotating part during the rotation operation of the constraint part.

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