Hinge structure for trunk lid of vehicle

Abstract

The utility model relates to a hinge structure for a trunk lid of a vehicle. One end of the hinge arm is hinged to a first position of the hinge bracket; one side of the movable end of the torsion bar is hinged to a second position of the hinge support, and the second position is located in front of the first position; the first end of the hinge connecting rod is hinged to the hinge arm, and the second end of the hinge connecting rod is hinged to the other side of the movable end of the torsion bar; the first end of the driving unit is movably connected to the second end of the hinge connecting rod, and the driving unit can provide driving force for the hinge arm through the hinge connecting rod. According to the hinge structure for the trunk lid of the vehicle, the trunk lid can be opened stably, and the hinge structure has the advantages of being easy to install, low in cost and high in adaptability.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of vehicle, especially a hinge structure for trunk lid of vehicle. BACKGROUND

[0002] Generally, the trunk lid of vehicle is installed on the vehicle body through the hinge structure, and the trunk lid is rotated to the predetermined height through the cooperation of the hinge arm and the torsion bar (torsion rod), so as to open the trunk room. However, it is difficult to control the rotation speed of the trunk lid in the process of opening the trunk lid, especially in the last stage of opening the trunk lid, the rotation speed of the trunk lid is very fast, and after rotating to the maximum angle, it will rebound, which will reduce the user experience and cause a greater impact on the torsion bar, thereby reducing the durability of the torsion bar.

[0003] In order to solve the above problems, a common way at present is to add an auxiliary driving device to assist the torsion bar, so as to realize the stable opening of the trunk lid. For example, the structure disclosed in Chinese invention patent CN 114320069A. However, compared with the scheme of adopting linear driving device, this way has the shortcomings of complex structure and difficult assembly and adjustment.

[0004] Another way is to add a linear driving rod in the traditional hinge structure, so as to realize the stable opening of the trunk lid. For example, the structure disclosed in Chinese utility model patent CN 218934148U. However, this setting scheme is limited by the size of the linear driving rod, so it is not suitable for smaller trunk. Secondly, if the vehicle body side mounting point of the driving rod is designed in the front direction of the hinge side mounting point, the linear driving rod and the torsion bar are partially overlapped in position, which will cause mutual interference between the two components during work.

[0005] The information disclosed in the background section of the utility model is only intended to increase the understanding of the overall background of the utility model, and should not be regarded as acknowledging or implying in any form that the information constitutes prior art known to those skilled in the art. CONTENT OF THE UTILITY MODEL

[0006] In order to solve the problems existing in the prior art, the utility model provides a hinge structure for trunk lid of vehicle, which can realize the stable opening of the trunk lid, and has the characteristics of easy installation, low cost and higher adaptability.

[0007] According to the first aspect of the utility model, the utility model provides a hinge structure for trunk lid of vehicle, include: hinge support, hinge arm, its one end is hinged to first position of hinge support, torsion bar, one side of movable end of torsion bar is hinged to second position of hinge support, and second position is located in front of first position, hinge connecting rod, first end of hinge connecting rod is hinged to hinge arm, and second end of hinge connecting rod is hinged to the other side of movable end of torsion bar, and drive unit, first end of drive unit is movably connected to second end of hinge connecting rod, and drive unit can provide driving force to hinge arm through hinge connecting rod.

[0008] According to the exemplary embodiment of the utility model, the second end of the hinge connecting rod is provided with a first spherical joint, and the first end of the drive unit is provided with a first connecting part corresponding to the first spherical joint. Through the cooperation of the first connecting part and the first spherical joint, the second end of the hinge connecting rod is movably connected to the first end of the drive unit.

[0009] According to the exemplary embodiment of the utility model, the second end of the drive unit is provided with a second connecting part corresponding to the second spherical joint. Through the cooperation of the second connecting part and the second spherical joint, the second end of the drive unit is movably connected to the vehicle body.

[0010] According to the exemplary embodiment of the utility model, the hinge support is provided with a first hinge shaft at the first position, and the hinge arm is hinged to the hinge support through the first hinge shaft. The hinge arm rotates around the first hinge shaft to form a reference hinge plane.

[0011] According to the exemplary embodiment of the utility model, the hinge connecting rod includes a first hinge connecting rod and a second hinge connecting rod arranged opposite to each other. The first end of the hinge connecting rod is provided with a second hinge shaft. The first end of the first hinge connecting rod and the first end of the second hinge connecting rod are hinged to the second hinge shaft and located on both sides of the hinge arm respectively. The second end of the first hinge connecting rod and the second end of the second hinge connecting rod are engaged with each other.

[0012] According to the exemplary embodiment of the utility model, the drive unit includes a driving device and a driving rod. The driving rod can form an angle greater than or equal to -10° and less than or equal to 10° with the reference hinge plane.

[0013] According to the exemplary embodiment of the utility model, the driving rod can form an angle greater than or equal to -45° and less than or equal to 45° with the horizontal plane.

[0014] According to the exemplary embodiment of the utility model, the hinge support is provided with two, respectively symmetrically arranged on the left and right sides of the vehicle, the hinge arm, the torsion bar and the hinge connecting rod are correspondingly provided with two, and are respectively symmetrically arranged on the left and right sides of the vehicle.

[0015] According to the exemplary embodiment of the utility model, the driving unit is provided with one, arranged on the left side or the right side of the vehicle.

[0016] According to the exemplary embodiment of the utility model, the driving unit is provided with two, respectively arranged on the left and right sides of the vehicle.

[0017] According to the exemplary embodiment of the utility model, the driving unit includes a driving device and a driving rod, and the driving device and the driving rod are coaxially arranged.

[0018] According to the exemplary embodiment of the utility model, the driving unit includes a driving device and a driving rod, and the driving device and the driving rod can form an angle greater than or equal to 60° and less than or equal to 120°.

[0019] According to the second aspect of the utility model, the utility model provides a vehicle, comprising: the hinge structure of the trunk lid.

[0020] Through the above embodiment, the hinge structure of the trunk lid for the vehicle of the utility model avoids the problem that the driving unit and the torsion bar interfere with each other in the track when the hinge structure works, thereby affecting the opening and closing performance of the trunk lid. The hinge structure of the trunk lid for the vehicle of the utility model is further connected with the hinge connecting rod and the vehicle body by a spherical joint, so that the hinge structure is not limited by the size of the driving unit, and is more suitable for more sizes of the trunk. Since the torsion bar and other devices that can provide auxiliary driving force are provided, the hinge structure of the trunk lid for the vehicle of the utility model can also reduce the capacity and / or power requirement of the motor in the driving device, thereby further saving cost and space.

[0021] Meanwhile, the hinge structure of the trunk lid for the vehicle of the utility model has the characteristics of simple structure, convenient installation and debugging, and higher adaptability, and has more market competitive advantages. The device of the utility model has other characteristics and advantages, which will be obvious from the drawings incorporated herein and the subsequent embodiments, or will be described in detail in the drawings and subsequent embodiments incorporated herein, which are used to explain the specific principles of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0022] FIG. 1The overall structure schematic diagram of the hinge structure of the trunk lid for the vehicle according to the exemplary embodiment of the present application.

[0023] FIG. 2 The exploded schematic diagram of the hinge structure of the trunk lid for the vehicle according to the exemplary embodiment of the present application.

[0024] FIG. 3 The overall structure schematic diagram of the hinge connecting rod of the hinge structure of the trunk lid for the vehicle according to the exemplary embodiment of the present application.

[0025] FIG. 4A And 4B The assembly schematic diagram of the hinge bracket, the hinge arm and the hinge connecting rod of the hinge structure of the trunk lid for the vehicle according to the exemplary embodiment of the present application.

[0026] FIG. 5A The assembly schematic diagram of the first torsion rod of the hinge structure of the trunk lid for the vehicle according to the exemplary embodiment of the present application.

[0027] FIG. 5B The assembly schematic diagram of the first torsion rod and the second torsion rod of the hinge structure of the trunk lid for the vehicle according to the exemplary embodiment of the present application.

[0028] FIG. 6A And FIG. 6B The assembly schematic diagram of the driving unit and the hinge connecting rod of the hinge structure of the trunk lid for the vehicle according to the exemplary embodiment of the present application.

[0029] FIG. 7A The overall structure schematic diagram of the hinge structure of the trunk lid for the vehicle with a single-side driving unit according to the exemplary embodiment of the present application.

[0030] FIG. 7B The overall structure schematic diagram of the hinge structure of the trunk lid for the vehicle with a double-side driving unit according to the exemplary embodiment of the present application.

[0031] FIG. 8A And FIG. 8B The schematic diagram of the hinge connecting rod of the trunk lid for the vehicle according to the exemplary embodiment of the present application, and the position relationship between the driving unit and the vertical plane and the horizontal plane is shown.

[0032] FIG. 9 The schematic diagram of the hinge structure of the trunk lid for the vehicle according to the exemplary embodiment of the present application, and the position relationship between the driving device of the driving unit and the driving rod is shown.

[0033] FIG. 10A AndFIG. 10B Schematic view of the hinge structure from the side of the vehicle body and slightly tilted in the car head to car tail direction at the initial stage of opening of the trunk lid of the vehicle, and the driving force provided by the driving unit and the torque provided by the torsion bar for the rotation of the hinge arm are shown.

[0034] FIG. 11A to FIG. 11B Schematic view of the hinge structure from the side of the vehicle body and slightly tilted in the car head to car tail direction at the intermediate stage of opening of the trunk lid of the vehicle, and the driving force provided by the driving unit and the torque provided by the torsion bar for the rotation of the hinge arm are shown.

[0035] FIG. 12A to FIG. 12B Schematic view of the hinge structure from the side of the vehicle body and slightly tilted in the car head to car tail direction at the final stage of opening of the trunk lid of the vehicle, and the driving force provided by the driving unit and the torque provided by the torsion bar for the rotation of the hinge arm are shown.

[0036] FIG. 13A to FIG. 13B Schematic view of the hinge structure from the side of the vehicle body and slightly tilted in the car head to car tail direction at the initial stage of closing of the trunk lid of the vehicle, and the driving force provided by the driving unit and the torque provided by the torsion bar for the rotation of the hinge arm are shown.

[0037] FIG. 14A to FIG. 14B Schematic view of the hinge structure from the side of the vehicle body and slightly tilted in the car head to car tail direction at the intermediate stage of closing of the trunk lid of the vehicle, and the driving force provided by the driving unit and the torque provided by the torsion bar for the rotation of the hinge arm are shown.

[0038] FIG. 15A to FIG. 15B Schematic view of the hinge structure from the side of the vehicle body and slightly tilted in the car head to car tail direction at the final stage of closing of the trunk lid of the vehicle, and the driving force provided by the driving unit and the torque provided by the torsion bar for the rotation of the hinge arm are shown.

[0039] BRIEF DESCRIPTION OF THE DRAWINGS

[0040] 100: hinge bracket 110: first position

[0041] 111: first hinge shaft 120: second position

[0042] 121: first clamping groove 122: fixing hole

[0043] 200: hinge arm

[0044] 300: torsion bar 310: first torsion bar

[0045] 311: first torsion bar fixed end 312: first torsion bar rotation axis

[0046] 313: first torsion bar free end 320: second torsion bar

[0047] 321: second torsion bar fixed end

[0048] 400: hinge link 410: hinge link first end

[0049] 411: second hinge axis 420: hinge link second end

[0050] 421: first spherical joint 440: second clamping groove

[0051] 450: first hinge link 460: second hinge link

[0052] 500: drive unit 510: drive unit first end

[0053] 511: first connecting portion 520: drive unit second end

[0054] 521: second spherical joint 522: second connecting portion

[0055] 530: drive rod 540: drive device

[0056] 600: reference hinge plane 700: horizontal plane

[0057] It should be understood that the drawings are not necessarily to scale, and that the various features are shown in a simplified form and are not necessarily drawn to scale in order to illustrate the basic principles of the present application. The specific design features (including, for example, specific dimensions, orientations, locations, and shapes) disclosed in the present application will be determined in part by the particular environment in which the present application is applied and used.

[0058] In these drawings, like reference numerals indicate like or equivalent parts throughout the several views of the drawings. The drawings are not necessarily to scale, and that the various features are shown in a simplified form and are not necessarily drawn to scale in order to illustrate the basic principles of the present application. DETAILED DESCRIPTION

[0059] Reference will now be made in detail to various embodiments of the present application, examples of which are illustrated in the accompanying drawings and described below. While the present application will be described in conjunction with the example embodiments, it should be understood that the present application is not intended to be limited to these example embodiments. On the contrary, the present application is intended to cover all alternatives, modifications, equivalents, and other embodiments that can be included within the spirit and scope of the present application as defined by the appended claims.

[0060] The following description is presented to enable any person skilled in the art to practice the present application as claimed. FIG. 1 to FIG. 6B A hinge structure for a trunk lid of a vehicle is described.

[0061] FIG. 1It is a whole structure schematic view of the hinge structure of the trunk lid for vehicle according to the exemplary embodiment of the utility model. FIG. 2 It is an exploded schematic view of the hinge structure of the trunk lid for vehicle according to the exemplary embodiment of the utility model. FIG. 3 It is a whole structure schematic view of the hinge connecting rod of the hinge structure of the trunk lid for vehicle according to the exemplary embodiment of the utility model. FIG. 4A to FIG. 4B It is an assembly schematic view of the hinge bracket, hinge arm and hinge connecting rod of the hinge structure of the trunk lid for vehicle according to the exemplary embodiment of the utility model. FIG. 5A It is an assembly schematic view of the first torsion bar of the hinge structure of the trunk lid for vehicle according to the exemplary embodiment of the utility model. FIG. 5B It is an assembly schematic view of the first torsion bar and the second torsion bar of the hinge structure of the trunk lid for vehicle according to the exemplary embodiment of the utility model. FIG. 6A to FIG. 6B It is an assembly schematic view of the driving unit and the hinge connecting rod of the hinge structure of the trunk lid for vehicle according to the exemplary embodiment of the utility model.

[0062] Firstly, in order to facilitate the description, the "front" in the application when describing the relative position of the specific structure refers to the forward direction of the vehicle, the "rear" refers to the rear direction of the vehicle, and the "up" refers to the upward direction of the vehicle.

[0063] As shown in FIG. 1 to FIG. 6B The hinge structure of the trunk lid for vehicle of the utility model comprises a hinge bracket 100, a hinge arm 200, a torsion bar 300, a hinge connecting rod 400 and a driving unit 500.

[0064] The hinge bracket 100 is installed to the rear body structure. The hinge bracket 100 has a first position 110 and a second position 120. Wherein, the first position 110 can be more upward and more rearward than the second position 120 (as shown in FIG. 1 and FIG. 4B ).

[0065] The hinge bracket 100 is provided with a first hinge shaft 111 at the first position 110, and one end of the hinge arm 200 is hinged to the first position 110 of the hinge bracket 100 through the first hinge shaft 111 (as shown in FIG. 2 、 FIG. 4A and FIG. 4B ). The other end of the hinge arm 200 is connected to the trunk lid to support the trunk lid. The hinge arm 200 is a swan neck type hinge arm.

[0066] One end of the torsion bar 300 is hinged to the second position 120 of the hinge bracket 100. The torsion bar 300 can provide torque to the hinge arm 200, so that the hinge arm 200 rotates around the first position 110.

[0067] The hinge link first end 410 of the hinge link 400 is provided with a second hinge shaft 411, and the hinge link first end 410 is hinged to the hinge arm 200 through the second hinge shaft 411 (as shown in FIG. 2 、 FIG. 3 、 FIG. 4A and FIG. 4B indicated). Specifically, the hinge link first end 410 is hinged to the third position of the hinge arm 200 through the second hinge shaft 411, which has a predetermined distance from the end of the hinge arm 200 hinged to the first position 110, thereby providing a force arm for the hinge link 400 to open the trunk lid. The hinge link second end 420 of the hinge link 400 is hinged to the other end of the torsion bar 300, so that the torsion bar 300 provides a torque to the hinge arm 200 through the hinge link 400, thereby causing the hinge arm 200 to rotate around the first position 110.

[0068] Further, as shown in FIG. 2 and FIG. 3 , the second hinge shaft 411 passes through the hinge link first end 410 and the third position of the hinge arm 200, so that the two are hinged to each other with the second hinge shaft 411 as the shaft. The hinge link 400 includes a first hinge link 450 and a second hinge link 460 arranged opposite to each other, the hinge link second end 420 of the first hinge link and the hinge link second end 420 of the second hinge link are engaged with each other, and the hinge link first end 410 of the first hinge link 450 and the hinge link first end 410 of the second hinge link are hinged to the second hinge shaft 411 and located on both sides of the hinge arm 200 respectively, so that the torsion bar 300 provides a torque to the hinge arm 200 more stably through the hinge link 400. The hinge link 400 is further provided with a first spherical joint 421 protruding in a direction parallel to the axial direction of the second hinge shaft 411 at the hinge link second end 420 (as shown in FIG. 3 ).

[0069] According to the exemplary embodiment of the present application, as shown in FIG. 4A to FIG. 5B , the torsion bar 300 can include a first torsion bar 310 and a second torsion bar 320. As shown in FIG. 4A to FIG. 5A , the second position 120 of the hinge bracket 100 is provided with a first clamping groove 121 with an opening facing backward. The second end of the hinge link 400 is provided with a second clamping groove 440 with an opening facing forward. The first torsion bar rotating shaft 312 is sleeved in the first clamping groove 121, and the first torsion bar free end 313 is sleeved in the second clamping groove 440. As shown in FIG. 1 、 FIG. 4A and FIG. 5BAs shown, the second torsion bar fixed end 321 is fixed to the protrusion below the second position 120 of the hinge bracket 100 and the fixed hole 122 arranged on the side of the second position 120, so that the second torsion bar fixed end 321 remains stationary relative to the hinge bracket 100 during the opening and closing of the trunk lid. FIG. 5B As shown, a set of hinge brackets, hinge arms and hinge links are arranged symmetrically on the left side of the vehicle relative to the hinge bracket 100, the hinge arm 200 and the hinge link 400 on the right side of the vehicle. The second torsion bar 320 is arranged in reverse symmetry with the first torsion bar. The second torsion bar rotating shaft sleeve is arranged in the first clamping slot on the right side of the vehicle, and the second torsion bar free end sleeve is arranged in the second clamping slot on the right side of the vehicle. FIG. 1 As shown, a set of hinge brackets, hinge arms and hinge links are arranged symmetrically on the left side of the vehicle relative to the hinge bracket 100, the hinge arm 200 and the hinge link 400 on the right side of the vehicle. The second torsion bar 320 is arranged in reverse symmetry with the first torsion bar. The second torsion bar rotating shaft sleeve is arranged in the first clamping slot on the right side of the vehicle, and the second torsion bar free end sleeve is arranged in the second clamping slot on the right side of the vehicle. FIG. 1 As shown, the first torsion bar fixed end 311 is fixed to the protrusion below the second position of the hinge bracket on the right side of the vehicle and the fixed hole arranged on the side of the second position, so that the fixed end of the first torsion bar 310 remains stationary relative to the hinge bracket on the right side of the vehicle during the opening and closing of the trunk lid. FIG. 5B As shown, the first torsion bar fixed end 311 is fixed to the protrusion below the second position of the hinge bracket on the right side of the vehicle and the fixed hole arranged on the side of the second position, so that the fixed end of the first torsion bar 310 remains stationary relative to the hinge bracket on the right side of the vehicle during the opening and closing of the trunk lid.

[0070] As shown, the first torsion bar fixed end 311 is fixed to the protrusion below the second position of the hinge bracket on the right side of the vehicle and the fixed hole arranged on the side of the second position, so that the fixed end of the first torsion bar 310 remains stationary relative to the hinge bracket on the right side of the vehicle during the opening and closing of the trunk lid. FIG. 6A As shown, the drive unit 500 includes a drive rod 530 arranged at its first end, and a drive device 540 arranged at its second end. The drive unit first end 510 is provided with a first connecting part 511 corresponding to the first spherical joint 421, and through the cooperation of the first connecting part 511 and the first spherical joint 421, the hinge link second end 420 of the hinge link 400 is movably connected with the drive unit first end 510 (as shown in FIG. 6B As shown, the drive unit 500 includes a drive rod 530 arranged at its first end, and a drive device 540 arranged at its second end. The drive unit first end 510 is provided with a first connecting part 511 corresponding to the first spherical joint 421, and through the cooperation of the first connecting part 511 and the first spherical joint 421, the hinge link second end 420 of the hinge link 400 is movably connected with the drive unit first end 510 (as shown in FIG. 2 As shown, the drive unit 500 includes a drive rod 530 arranged at its first end, and a drive device 540 arranged at its second end. The drive unit first end 510 is provided with a first connecting part 511 corresponding to the first spherical joint 421, and through the cooperation of the first connecting part 511 and the first spherical joint 421, the hinge link second end 420 of the hinge link 400 is movably connected with the drive unit first end 510 (as shown in FIG. 6A As shown, the drive unit 500 includes a drive rod 530 arranged at its first end, and a drive device 540 arranged at its second end. The drive unit first end 510 is provided with a first connecting part 511 corresponding to the first spherical joint 421, and through the cooperation of the first connecting part 511 and the first spherical joint 421, the hinge link second end 420 of the hinge link 400 is movably connected with the drive unit first end 510 (as shown in FIG. 6B As shown, the drive unit 500 includes a drive rod 530 arranged at its first end, and a drive device 540 arranged at its second end. The drive unit first end 510 is provided with a first connecting part 511 corresponding to the first spherical joint 421, and through the cooperation of the first connecting part 511 and the first spherical joint 421, the hinge link second end 420 of the hinge link 400 is movably connected with the drive unit first end 510 (as shown in FIG. 2 As shown, the drive unit 500 includes a drive rod 530 arranged at its first end, and a drive device 540 arranged at its second end. The drive unit first end 510 is provided with a first connecting part 511 corresponding to the first spherical joint 421, and through the cooperation of the first connecting part 511 and the first spherical joint 421, the hinge link second end 420 of the hinge link 400 is movably connected with the drive unit first end 510 (as shown in FIG. 6A As shown, the drive unit 500 includes a drive rod 530 arranged at its first end, and a drive device 540 arranged at its second end. The drive unit first end 510 is provided with a first connecting part 511 corresponding to the first spherical joint 421, and through the cooperation of the first connecting part 511 and the first spherical joint 421, the hinge link second end 420 of the hinge link 400 is movably connected with the drive unit first end 510 (as shown in FIG. 6B As shown, the drive unit 500 includes a drive rod 530 arranged at its first end, and a drive device 540 arranged at its second end. The drive unit first end 510 is provided with a first connecting part 511 corresponding to the first spherical joint 421, and through the cooperation of the first connecting part 511 and the first spherical joint 421, the hinge link second end 420 of the hinge link 400 is movably connected with the drive unit first end 510 (as shown in

[0071] A spring can be sleeved in the driving rod 530. According to an exemplary embodiment of the present application, a compression spring is sleeved in the driving rod 530. During the whole process of opening and closing the trunk lid of the vehicle, the working length of the compression spring is always shorter than the free length, i.e. always in the compressed state. Therefore, the compression spring always in the compressed state can continuously provide the driving rod 530 with a pushing force directed to the first connecting part 511 during the whole process of opening and closing the trunk lid of the vehicle.

[0072] A motor can be arranged inside the driving device 540, which can provide the driving rod 530 with a driving force directed to the first connecting part 511. A speed reducer can also be arranged inside the driving device 540, which can reduce the rotating speed of the motor, thereby increasing the output torque to increase the size of the driving force and make the opening more smooth. Through a conversion device such as a screw nut, the rotating power of the motor can be converted into a linear driving force of the driving rod 530, and the opening speed of the trunk lid of the vehicle can be controlled by controlling the rotating speed of the motor; in this process, the torsion rod 300 and the compression spring in the driving rod 530 further provide power for the opening of the trunk lid.

[0073] According to an exemplary embodiment of the present application, the driving unit 500 can be arranged on one side of the vehicle. As shown in FIG. 7A , the driving unit 500 is arranged on the left side of the vehicle. In this embodiment, the driving unit 500 arranged on one side provides the hinge arm 200 on the left side of the vehicle corresponding thereto with a driving force to open the trunk lid. At this time, the hinge arm on the right side of the vehicle can rotate with the opening of the trunk lid. Further, the hinge arm 200 on the right side can be provided with a certain driving force by the first torsion rod 310 to assist the opening of the trunk lid. And the hinge arm 200 on the left side can be further provided with a certain driving force by the second torsion rod 320 to assist the opening of the trunk lid.

[0074] According to another exemplary embodiment of the present application, the driving unit 500 can be installed on both sides of the vehicle. As shown in FIG. 7B , the driving unit 500 can be arranged on both sides of the vehicle. In this embodiment, the driving unit 500 arranged on both sides provides the two hinge arms 200 on the opposite sides of the vehicle corresponding thereto with driving forces respectively. And further, the first torsion rod 310 and the second torsion rod 320 can provide assistance to the corresponding right and left hinge arms 200.

[0075] As the first spherical joint 421 and the first connecting portion 511 are used to movably connect the driving rod 530 and the hinge link 400, the driving rod 530 can move in multiple planes relative to the hinge link 400 within the range allowed by the first spherical joint 421 and the first connecting portion 511. The hinge arm 200 rotates around the first hinge shaft 111 to form a reference hinge plane 600. According to an exemplary embodiment of the present application, as shown in FIG. 8A As the first spherical joint 421 and the first connecting portion 511 are used to movably connect the driving rod 530 and the hinge link 400, an angle greater than or equal to -10° and less than or equal to 10° can be formed between the driving rod 530 and the reference hinge plane 600.

[0076] According to an exemplary embodiment of the present application, as shown in FIG. 8B As the first spherical joint 421 and the first connecting portion 511 are used to movably connect the driving rod 530 and the hinge link 400, an angle greater than or equal to -45° and less than or equal to 45° can be formed between the driving rod 530 and the horizontal plane 700. The use of the spherical joint between the driving rod 530 and the hinge link 400 can increase the flexibility of the driving unit 500 in transmitting driving force, and reduce the space occupied by the hinge structure in the front-rear and / or left-right directions of the vehicle, so that the hinge structure can be more widely applied to vehicle trunks of different sizes and shapes.

[0077] Similarly, as the second spherical joint 521 and the second connecting portion 522 are used to movably connect the driving device 540 and the vehicle body, the driving device 540 can form different angles with the vehicle body within the range allowed by the second spherical joint 521 and the second connecting portion 522. The use of the spherical joint between the driving rod 530 and the vehicle body can also increase the flexibility of the driving unit 500 in transmitting driving force, and reduce the space occupied by the hinge structure in the front-rear and / or left-right directions of the vehicle, so that the hinge structure can be more widely applied to vehicle trunks of different sizes and shapes.

[0078] According to an exemplary embodiment of the present application, as shown in FIG. 8A and 8B The driving device 540 and the driving rod 530 are coaxially arranged.

[0079] According to another exemplary embodiment of the present application, as shown in FIG. 9As shown, an angle of about 90° can be formed between the driving device 540 and the driving rod 530. Alternatively, in other embodiments, an angle greater than or equal to 60° and less than or equal to 120° can be formed between the driving device 540 and the driving rod 530. Such an angular design between the driving device 540 and the driving rod 530 can further compress the space occupied by the entire driving unit 500 in the vehicle interior, thereby further enabling the hinge structure to be widely applicable to vehicles of different sizes and shapes.

[0080] FIG. 10A to FIG. 12B Schematic diagrams of the driving force provided by the driving unit for the rotation of the hinge arm and the positional relationship of the components in the initial stage, the intermediate stage and the final stage of the opening of the trunk lid of a vehicle. FIG. 13A to FIG. 15B Schematic diagrams of the driving force provided by the driving unit for the rotation of the hinge arm and the positional relationship of the components in the initial stage, the intermediate stage and the final stage of the closing of the trunk lid of a vehicle.

[0081] The working principle of the hinge structure of the trunk lid of a vehicle according to the present application will be described below with reference to the accompanying drawings. Although FIG. 10A to FIG. 15B Both examples of the vehicle with a driving unit arranged on one side, other exemplary embodiments of the present application also include examples of the vehicle with a driving unit arranged on both sides.

[0082] According to an exemplary embodiment of the present application, when the trunk lid is closed and in the initial stage of opening, as shown in FIG. 10A and FIG. 10B As shown, the hinge arm 200 has not started to rotate, and the torsion rod 300 provides a torque around the first torsion rod rotation axis 312 and backward to the second clamping groove 440 of the hinge connecting rod 400 through the first torsion rod free end 313, and further provides a torque around the first hinge axis 111 and backward to the hinge arm 200 by the hinge connecting rod 400. At this time, the torsion rod 300, the motor in the driving device 540 and the compression spring in the driving rod 530 all provide driving force for opening the trunk lid, and the reducer in the driving device 540 reduces the rotation speed of the motor, thereby increasing the output torque to increase the size of the motor driving force, and making the opening more smooth.

[0083] When the trunk lid is in the intermediate stage of opening, as shown in FIG. 11A and FIG. 11BAs shown, the hinge arm 200 begins to rotate rearward about the first hinge axis 111. The torsion bar 300 continuously provides torque to the second slot 440 of the hinge link 400 through the free end 313 of the first torsion bar. This torque is less than that in the initial opening stage, and consequently, the torque provided by the hinge link 400 to the hinge arm 200 also decreases. At this time, the force provided by the torsion bar 300 and the force provided by the compression spring in the drive rod 530 are both less than those in the initial opening stage. However, due to the inertia generated in the initial opening stage, the gradually decreasing driving force in this stage makes the opening smoother. In addition, by controlling the speed of the motor, the trunk lid can be opened at a uniform speed.

[0084] When the trunk lid is in the final stage of opening, such as FIG. 12A and FIG. 12B As shown, the hinge arm 200 rotates backward about the first hinge axis 111 to the open limit state. The torque provided by the torsion bar 300 to the second slot 440 of the hinge link 400 through the free end 313 of the first torsion bar is reduced to zero or even zero compared to the initial and intermediate stages of opening. Consequently, the torque provided by the hinge link 400 to the hinge arm 200 also decreases or even becomes zero. At this time, the force provided by the torsion bar 300 and the force provided by the compression spring in the drive rod 530 are both reduced compared to the initial and intermediate stages of opening. Furthermore, by controlling the motor speed to gradually reduce to 0, the trunk lid can gradually transition to a stationary state.

[0085] According to another exemplary embodiment of the present invention, when the trunk lid is open and in the initial stage of closing, such as FIG. 13A and FIG. 13B As shown, the hinge arm 200 has not yet started to rotate. The torsion bar 300 still provides a rearward torque around the rotation axis 312 of the first torsion bar to the second slot 440 of the hinge link 400 through the free end 313 of the first torsion bar, and then the hinge link 400 provides a rearward torque around the first hinge axis 111 to the hinge arm 200. At this time, the force provided by the torsion bar 300 and the force provided by the internal compression spring of the drive rod 530 are both driving forces for opening the trunk lid rearward. Therefore, the motor in the drive device 540 needs to provide a driving force axially upward and forward on the drive rod 530, that is, a driving force opposite to that during the opening process. Since the force provided by the drive device 540 at this time needs to be greater than the force provided by the torsion bar 300 and the force provided by the internal compression spring of the drive rod 530, the driving force provided by the drive device 540 at this time may be greater than the driving force it provides during the opening of the trunk lid. The reducer inside the drive unit 540 increases the output torque by reducing the speed of the motor, thereby increasing the driving force. This makes the initial acceleration of closing controllable, and the movement of the trunk lid will not be too sudden during the initial stage of closing.

[0086] When the trunk lid is in the middle of closing, such as FIG. 14Aand FIG. 14B As shown in FIG. 5, the driving device 540 provides an axial and forward driving force to the driving rod 530, and the hinge arm 200 starts to rotate forward with the first hinge shaft 111 as the axis. The torsion rod 300 provides a torque to the second clamping slot 440 of the hinge connecting rod 400 through the first torsion rod free end 313, and the torque is increased compared with that in the initial stage of closing, and then the torque provided by the hinge connecting rod 400 to the hinge arm 200 is also increased. At this time, the force provided by the torsion rod 300 and the force provided by the compression spring in the driving rod 530 are both increased compared with those in the initial stage of closing, so the driving force provided by the driving device 540 at this time needs to be greater than that provided by the driving device 540 in the initial stage of closing the trunk lid.

[0087] As shown in FIG. 6, when the trunk lid is in the final stage of closing, the hinge arm 200 rotates forward with the first hinge shaft 111 as the axis to the limit state of closing, and the torsion rod 300 provides a torque to the second clamping slot 440 of the hinge connecting rod 400 through the first torsion rod free end 313, and the torque is increased compared with that in the initial and intermediate stages of opening, and then the torque provided by the hinge connecting rod 400 to the hinge arm 200 is also increased. At this time, the force provided by the torsion rod 300 and the force provided by the compression spring in the driving rod 530 are both increased compared with those in the initial and intermediate stages of closing, so the driving force provided by the driving device 540 at this time needs to be greater than that provided by the driving device 540 in the initial and intermediate stages of closing the trunk lid, so as to completely close the trunk lid. FIG. 15A and FIG. 15B As shown in FIG. 6, when the trunk lid is in the final stage of closing, the hinge arm 200 rotates forward with the first hinge shaft 111 as the axis to the limit state of closing, and the torsion rod 300 provides a torque to the second clamping slot 440 of the hinge connecting rod 400 through the first torsion rod free end 313, and the torque is increased compared with that in the initial and intermediate stages of opening, and then the torque provided by the hinge connecting rod 400 to the hinge arm 200 is also increased. At this time, the force provided by the torsion rod 300 and the force provided by the compression spring in the driving rod 530 are both increased compared with those in the initial and intermediate stages of closing, so the driving force provided by the driving device 540 at this time needs to be greater than that provided by the driving device 540 in the initial and intermediate stages of closing the trunk lid, so as to completely close the trunk lid.

[0088] For the convenience of explanation and accurate definition of the appended claims, the terms "upper", "lower", "inner", "outer", "top", "bottom", "upper", "lower", "upward", "downward", "front", "rear", "forward", "rearward", "inward", "outward", "inner", "outer", "internal", "external", "internal", "external", "forward", "rearward" are used to describe the features of the exemplary embodiments with reference to the positions of the features shown in the drawings.

[0089] The foregoing description of specific exemplary embodiments of the present application is presented for the purpose of illustration and description. It is not intended to be exhaustive or to be limited to the precise form disclosed. Obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain the principles of the application and its practical application. Others skilled in the art will readily devise their own modifications and variations in accordance with the principles of the application and the following claims. The scope of the application is defined by the following claims and their equivalents.

Claims

1. A hinge structure for a trunk lid of a vehicle, characterized by, The hinge structure comprises: a hinge support; a hinge arm, one end of which is hingedly connected to a first position of the hinge support; a torsion bar, one side of a movable end of which is hingedly connected to a second position of the hinge support, the second position being in front of the first position; a hinge connecting rod, a first end of which is hingedly connected to the hinge arm, a second end of the hinge connecting rod being hingedly connected to the other side of the movable end of the torsion bar; and a driving unit, a first end of which is movably connected to the second end of the hinge connecting rod, the driving unit being capable of providing driving force to the hinge arm through the hinge connecting rod. The second end of the hinge connecting rod is provided with a first spherical joint, and the first end of the driving unit is provided with a first connecting part corresponding to the first spherical joint. Through the cooperation of the first connecting part and the first spherical joint, the second end of the hinge connecting rod is movably connected to the first end of the driving unit.

2. The hinge structure for a trunk lid of a vehicle according to claim 1, characterized by, A second spherical joint is arranged inside the vehicle body of the vehicle, and a second connecting part corresponding to the second spherical joint is arranged at the second end of the driving unit. Through the cooperation of the second connecting part and the second spherical joint, the second end of the driving unit is movably connected to the vehicle body.

3. The hinge structure for a trunk lid of a vehicle according to claim 2, characterized by, 4. The hinge structure of the trunk lid of the vehicle according to claim 3, wherein the hinge support is provided with a first hinge shaft at the first position, and the hinge arm is hingedly connected to the hinge support through the first hinge shaft, and the hinge arm rotates around the first hinge shaft to form a reference hinge plane. The hinge connecting rod comprises a first hinge connecting rod and a second hinge connecting rod arranged opposite to each other, and the first end of the hinge connecting rod is provided with a second hinge shaft, and the first end of the first hinge connecting rod and the first end of the second hinge connecting rod are hingedly connected to the second hinge shaft and are respectively arranged on the two sides of the hinge arm, and the second end of the first hinge connecting rod and the second end of the second hinge connecting rod are engaged with each other.

5. The hinge structure for a trunk lid of a vehicle according to claim 4, characterized by, The hinge support is provided with two hinge supports, which are respectively arranged symmetrically on the left and right sides of the vehicle.

6. The hinge structure for a trunk lid of a vehicle according to claim 5, characterized by, The drive unit comprises a drive device and a drive rod, which is able to form an angle of -10 0 between 0 0 and 10 degrees with the reference articulation plane.

7. The hinge structure for a trunk lid of a vehicle according to claim 6, characterized by, The drive unit comprises a drive rod, which can form an angle of -45 0 between 0 0 and 45 8. The hinge structure for a trunk lid of a vehicle according to claim 1, characterized by, The hinge arm, the torsion bar, and the hinge connecting rod are respectively provided with two hinge arms, two torsion bars, and two hinge connecting rods, which are respectively arranged symmetrically on the left and right sides of the vehicle. The driving unit is provided with one driving unit, which is arranged on the left side or the right side of the vehicle.

9. The hinge structure for a trunk lid of a vehicle according to claim 8, characterized by, The driving unit is provided with two driving units, which are respectively arranged on the left and right sides of the vehicle.

10. The hinge structure for a trunk lid of a vehicle according to claim 8, characterized by, The driving unit comprises a driving device and a driving rod, and the driving device and the driving rod are coaxially arranged.

11. The hinge structure for a trunk lid of a vehicle according to claim 1, characterized by, The hinge structure of the trunk lid according to any one of claims 1-12.

12. The hinge structure for a trunk lid of a vehicle according to claim 1, characterized by, The driving unit comprises a driving device and a driving rod, and an angle between the driving device and the driving rod can be formed 0 between 60 0 and 120 13. A vehicle characterized by comprising: ​ ​

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