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 end of the torsion bar is hinged to a second position of the hinge bracket; the first end of the hinge connecting rod is hinged to the hinge arm, the second end of the hinge connecting rod is hinged to the other end of the torsion bar, and a hook part extending upwards is arranged at the position, close to the second end, of the hinge connecting rod; one end of the adjusting assembly is connected to the hook part, the other end of the adjusting assembly is connected to the first position of the hinge support, and the adjusting assembly can provide forward torque for rotation of the hinge arm at the initial stage of opening of the trunk lid. 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 simple in structure, low in cost and high in adaptability.

Description

Technical Field

[0001] The utility model relates to the field of vehicles, in particular to a hinge structure for a trunk lid of a vehicle. Background Art

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

[0003] In order to solve the above problems, a commonly used method at present is to control the torsion generated by the torsion bar by adding an adjusting device to make the torsion change evenly, so as to realize the smooth opening of the trunk lid. For example, the structure disclosed in Chinese Utility Model Patent CN211422248U. However, this method has the disadvantages of complex structure, high cost, and difficult assembly and adjustment.

[0004] Another method is to add a buffer component to the traditional hinge structure. This structure usually presets a large torque for the torsion bar to ensure that the trunk lid can be fully opened, and slows down the speed of the torsion bar driving the trunk lid through the buffer component in the last stage of opening the trunk lid, so as to realize the smooth opening of the trunk lid. For example, the structure disclosed in Chinese Invention Patent CN113250560B. However, this buffer component arranged inside the hinge arm needs to have a corresponding predetermined space inside the hinge arm, resulting in low adaptability of the buffer component, and because the torsion bar presets a large torque, it is easy to affect the flatness of the trunk lid and the durability of the torsion bar.

[0005] The information disclosed in the background part of the present utility model is only intended to increase the understanding of the overall background of the present utility model, and should not be regarded as an admission or any form of suggestion that this information constitutes the prior art already known to those of ordinary skill in the art. Summary of the Utility Model

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

[0007] The present utility model provides a hinge structure for a trunk lid of a vehicle, comprising: a hinge bracket; a hinge arm, one end of which is hinged to a first position of the hinge bracket; a torsion bar, one end of which is hinged to a second position of the hinge bracket; a hinge link, a first end of which is hinged to the hinge arm and a second end of which is hinged to the other end of the torsion bar, and the hinge link is provided with an upwardly extending hook portion near the second end; and an adjustment assembly, one end of which is connected to the hook portion and the other end of which is connected to the first position of the hinge bracket, and the adjustment assembly is capable of providing a positive moment for the rotation of the hinge arm in an initial stage when the trunk lid is opened.

[0008] According to an exemplary embodiment of the present utility model, the hinge bracket is provided with a first hinge shaft at the first position; the hinge arm is hinged to the first hinge shaft and is capable of rotating around the first hinge shaft; and the other end of the adjustment assembly is connected to the first hinge shaft.

[0009] According to an exemplary embodiment of the present utility model, the adjustment assembly comprises: a connection assembly, which is connected to the first hinge shaft; an adjustment cylinder, which is rotatably arranged on the connection assembly and an end portion of the adjustment cylinder is provided with a spiral end face, the adjustment cylinder is hollow, the spiral end face has an opening and a notch arranged at an edge of the opening; and an elastic member, one end of which is connected to the hook portion and the other end of which is connected to the adjustment cylinder, and the elastic member has an adjustable elastic tension.

[0010] According to an exemplary embodiment of the present utility model, the connection assembly comprises: a first connecting member, which has a large radius portion and a small radius portion, the large radius portion is located inside the adjustment cylinder, and the small radius portion extends out of the adjustment cylinder; and a second connecting member, one end of which is connected to the small radius portion and the other end of which is provided with a hinge hole for the first hinge shaft to pass through.

[0011] According to an exemplary embodiment of the present utility model, the adjustment cylinder is capable of rotating around the first connecting member, and when the adjustment cylinder rotates around the first connecting member in a first rotation direction, a part of the elastic member can rotate into the interior of the adjustment cylinder through the opening and the notch, so that the elastic tension of the elastic member increases; when the adjustment cylinder rotates around the first connecting member in a second rotation direction, a part of the elastic member can rotate out of the adjustment cylinder through the opening and the notch, so that the elastic tension of the elastic member decreases.

[0012] According to an exemplary embodiment of the present utility model, the material of the adjustment cylinder is a thermoplastic elastomer material, so that there is friction between the elastic member and the spiral end face of the adjustment cylinder under the action of the elastic tension, thereby preventing the part of the elastic member located inside the adjustment cylinder from disengaging from the adjustment cylinder.

[0013] According to an exemplary embodiment of the present utility model, the hinge arm is provided with a mounting groove extending along the length direction; the first hinge shaft penetrates through both sides of the mounting groove to hinge the hinge arm to the first hinge shaft; the connecting component can be accommodated in the mounting groove.

[0014] According to an exemplary embodiment of the present utility model, the hinge arm is provided with a second hinge shaft at a third position; the hinge link includes a first hinge link and a second hinge link arranged facing each other, and the first ends of the first hinge link and the second hinge link are joined to each other, the hook portions of the first hinge link and the second hinge link are joined to each other, and the second ends of the first hinge link and the second hinge link are hinged to the second hinge shaft and are respectively located on both sides of the hinge arm.

[0015] According to an exemplary embodiment of the present utility model, a first card slot with an opening facing backward is provided at a second position of the hinge bracket, a second card slot with an opening facing forward is provided at the second end of the hinge link, one end of the torsion bar is sleeved in the first card slot, and the other end of the torsion bar is sleeved in the second card slot.

[0016] According to an exemplary embodiment of the present utility model, the first position is more upward and more backward than the second position.

[0017] Through the above embodiments, the hinge structure for the trunk lid of a vehicle according to the present utility model provides a positive moment for the rotation of the hinge arm by setting an adjustment component in cooperation with the torsion bar in the initial stage of opening the trunk lid, so that the hinge structure for the trunk lid of a vehicle according to the present utility model can reduce the preset torsion of the torsion bar by reducing the weight of the torsion bar while meeting the driving force required for opening the trunk lid, which is not only beneficial to reducing the material cost, but also can realize the smooth opening of the trunk lid and ensure the user experience.

[0018] At the same time, the hinge structure for the trunk lid of a vehicle according to the present utility model enables the elastic member to have an adjustable elastic tension through the cooperation of the adjustment cylinder and the elastic member, which is beneficial to compensating for the decrease in torque of the torsion bar due to too low temperature or long-term use by adjusting the increase value of the elastic tension of the elastic member to avoid the situation of insufficient power for opening the trunk lid.

[0019] In addition, the hinge structure for the trunk lid of a vehicle according to the present utility model has the characteristics of simple structure, convenient installation and debugging, and higher adaptability, and has more advantages in market competition.

[0020] The device of the present utility model has other characteristics and advantages, which will be apparent from the accompanying drawings incorporated herein and the subsequent embodiments, or will be described in detail in the accompanying drawings incorporated herein and the subsequent embodiments, and these drawings and embodiments together are used to explain the specific principles of the present utility model. Description of the Drawings

[0021] Figure 1 FIG. is a schematic structural diagram of a hinge structure for a trunk lid of a vehicle according to an exemplary embodiment of the present utility model.

[0022] Figure 2 FIG. is an assembly schematic diagram of a partial structure of a hinge structure for a trunk lid of a vehicle according to an exemplary embodiment of the present utility model.

[0023] Figure 3 FIG. is an assembly schematic diagram of another partial structure of a hinge structure for a trunk lid of a vehicle according to an exemplary embodiment of the present utility model.

[0024] Figure 4 FIG. is a schematic structural diagram of a first connecting member of a hinge structure for a trunk lid of a vehicle according to an exemplary embodiment of the present utility model.

[0025] Figure 5 FIG. is a schematic structural diagram of a second connecting member of a hinge structure for a trunk lid of a vehicle according to an exemplary embodiment of the present utility model.

[0026] Figure 6 FIG. is a schematic structural diagram of an adjusting cylinder of a hinge structure for a trunk lid of a vehicle according to an exemplary embodiment of the present utility model.

[0027] Figures 7A to 7B FIG. is a schematic diagram of adjusting the elastic tension of an elastic member by an adjusting assembly of a hinge structure for a trunk lid of a vehicle according to an exemplary embodiment of the present utility model.

[0028] Figure 8 FIG. is along Figure 7B The cross-sectional schematic diagram obtained by the A-A line in

[0029] Figure 9 FIG. is a schematic structural diagram of a hinge link of a hinge structure for a trunk lid of a vehicle according to an exemplary embodiment of the present utility model.

[0030] Figures 10A to 10C FIG. is a schematic diagram of the torque provided by a torsion bar and an adjusting assembly for the rotation of a hinge arm at the initial stage, intermediate stage, and final stage when the trunk lid of the vehicle is opened.

[0031] Description of the Reference Numerals:

[0032] 100: Hinge bracket

[0033] 110: First position 111: First hinge axis

[0034] 120: Second position 121: First card slot

[0035] 200: Hinge arm

[0036] 210: Mounting groove 220: Second hinge axis

[0037] 300: Torsion bar

[0038] 400: Hinge link

[0039] 410: Hook part 420: First hinge link

[0040] 430: Second hinge link 440: Second card slot

[0041] 500: Adjusting component

[0042] 510: First connecting piece 511: Large radius part

[0043] 512: Small radius part 520: Second connecting piece

[0044] 521: Hinge hole 530: Adjusting cylinder

[0045] 531: Opening 532: Notch

[0046] 540: Elastic member.

[0047] It should be understood that the drawings are not necessarily drawn to scale and present simplified representations of various features for the purpose of illustrating the basic principles of the present invention. The specific design features disclosed in the present invention (including, for example, specific dimensions, directions, positions, and shapes) will be determined in part by the specific application and use environment.

[0048] In these figures, throughout the several views of the drawings, the same reference numerals denote the same or equivalent parts of the present invention. Detailed description of the preferred embodiments

[0049] The following will refer in detail to various embodiments of the present invention, examples of which are shown in the drawings and described below. Although the present invention will be described in conjunction with exemplary embodiments, it should be understood that this specification is not intended to limit the present invention to these exemplary embodiments. On the contrary, the present invention is intended to cover not only these exemplary embodiments, but also various alternative forms, modifications, equivalent forms, and other embodiments that may be included within the spirit of the present invention and the scope defined by the appended claims.

[0050] The following will describe Figures 1 to 10C the hinge structure of the trunk lid for a vehicle according to the present utility model.

[0051] Figure 1 FIG. is a schematic structural view of the hinge structure of the trunk lid for a vehicle according to an exemplary embodiment of the present utility model. Figure 2 FIG. is an assembly schematic view of a part of the hinge structure of the trunk lid for a vehicle according to an exemplary embodiment of the present utility model. Figure 3 FIG. is an assembly schematic view of another part of the hinge structure of the trunk lid for a vehicle according to an exemplary embodiment of the present utility model.

[0052] First, for convenience of description, in this application, when describing the relative position of the specific structure, "front" refers to the forward direction of the vehicle, "rear" refers to the backward direction of the vehicle, and "up" refers to the upward direction of the vehicle.

[0053] As Figures 1 to 3 shown, the hinge structure of the trunk lid for a vehicle according to the present utility model includes: a hinge bracket 100, a hinge arm 200, a torsion bar 300, a hinge link 400, and an adjustment assembly 500.

[0054] The hinge bracket 100 is mounted to the rear body structure. The hinge bracket 100 has a first position 110 and a second position 120. Among them, the first position 110 can be more upward and more rearward than the second position 120 (as Figure 1 shown).

[0055] One end of the hinge arm 200 is hinged to the first position 110 of the hinge bracket 100. Specifically, as Figure 2 shown, the hinge bracket 100 is provided with a first hinge shaft 111 at the first position 110. One end of the hinge arm 200 is hinged to the first hinge shaft 111 and can rotate around the first hinge shaft 111. The other end of the hinge arm 200 is fixedly connected to the trunk lid (not shown in the figure) to support the trunk lid. The hinge arm 200 is a gooseneck hinge arm.

[0056] 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 hinge shaft 111.

[0057] The first end of the hinge link 400 is hinged to the hinge arm 200. Specifically, the first end of the hinge link 400 is hinged to the third position of the hinge arm 200, and the third position has a predetermined distance from the first hinge axis 111, so as to provide the hinge link 400 with a force arm for opening the trunk lid. The second end of the hinge link 400 is hinged to the other end of the torsion bar 300, so that the torsion bar 300 provides torque to the hinge arm 200 through the hinge link 400, so that the hinge arm 200 rotates around the first hinge axis 111. The hinge link 400 is provided with a hook portion 410 extending upward at a position close to the second end.

[0058] One end of the adjustment assembly 500 is connected to the hook portion 410 of the hinge link 400, and the other end of the adjustment assembly 500 is connected to the first position 110 of the hinge bracket 100, and the adjustment assembly 500 can provide a positive torque for the rotation of the hinge arm 200 in the initial stage of opening the trunk lid. In other words, the adjustment assembly 500 can provide a positive torque for the rotation of the hinge arm 200 together with the torsion bar 300 in the initial stage of opening the trunk lid, so that the hinge structure of the trunk lid of the vehicle of the utility model can reduce the torque provided by the torsion bar 300 (that is, reduce the preset torsion of the torsion bar 300) by reducing the weight of the torsion bar 300 when the driving force required for opening the trunk lid is met, thereby helping to reduce material costs. At the same time, in an exemplary embodiment of the utility model, as the opening angle of the trunk lid changes, the positive torque provided by the adjustment assembly 500 to the hinge arm 200 can be gradually reduced to 0, so as to prevent the trunk lid from rotating too fast in the final stage of opening, thereby achieving smooth opening of the trunk lid and ensuring the user experience.

[0059] According to an exemplary embodiment of the present utility model, Figure 3 , Figure 7A and Figure 7B As shown, the other end of the adjustment component 500 can be connected to the first hinge shaft 111 of the hinge bracket 100. Specifically, the adjustment component 500 may include a connection component, an adjustment cylinder 530 and an elastic member 540. The connection component is connected to the first hinge shaft 111. Figure 6 As shown, the adjusting cylinder 530 is rotatably disposed on the connecting assembly and the end of the adjusting cylinder 530 is configured as a spiral end surface, the adjusting cylinder 530 is configured as a hollow, and the spiral end surface of the adjusting cylinder 530 has an opening 531 and a notch 532 disposed at the edge of the opening 531. One end of the elastic member 540 is connected to the hook portion 410 of the hinge link 400, and the other end of the elastic member 540 is connected to the adjusting cylinder 530, and the elastic member 540 has an adjustable elastic tension.

[0060] Further, the connecting component may include a first connecting member 510 and a second connecting member 520. Cooperation Figure 4 and Figure 8 As shown, the first connecting member 510 has a large-radius portion 511 and a small-radius portion 512. The large-radius portion 511 is located within the adjusting cylinder 530, and the small-radius portion 512 extends out of the adjusting cylinder 530. One end of the second connecting member 520 is connected to the small-radius portion 512, and the other end of the second connecting member 520 is provided with a hinge hole 521 for the first hinge shaft 111 to pass through (as Figure 5 shown), so that the second connecting member 520 is connected to the first hinge shaft 111 of the hinge bracket 100. Among them, preferably, the connection between the second connecting member 520 and the small-radius portion 512 of the first connecting member 510 can be achieved through the cooperation of threads, so that the assembly of the first connecting member 510 and the second connecting member 520 is more convenient. As an option, the connection between the second connecting member 520 and the small-radius portion 512 of the first connecting member 510 can also be achieved through other connection methods such as welding, so that the assembly of the first connecting member 510 and the second connecting member 520 is more stable, and this is not limited in this article.

[0061] Further, cooperation Figure 7A and Figure 7B As shown, the adjusting cylinder 530 can rotate around the first connecting member 510, and when the adjusting cylinder 530 rotates around the first connecting member 510 along the first rotation direction W1, a part of the elastic member 540 can rotate into the adjusting cylinder 530 through the opening 531 and the notch 532, so that the elastic tension of the elastic member 540 increases. When the adjusting cylinder 530 rotates around the first connecting member 510 along the second rotation direction W2, a part of the elastic member 540 can rotate out of the adjusting cylinder 530 through the opening 531 and the notch 532, so that the elastic tension of the elastic member 540 decreases.

[0062] Specifically, by rotating the adjusting cylinder 530 to rotate around the first connecting member 510 along the first rotation direction W1, a part of the elastic member 540 can be rotated into the adjusting cylinder 530, so that the number of turns of the elastic member 540 located outside the adjusting cylinder 530 decreases, thereby increasing the degree of stretching of the part of the elastic member 540 located outside the adjusting cylinder 530, and further increasing the elastic tension of the elastic member 540. By rotating the adjusting cylinder 530 to rotate around the first connecting member 510 along the second rotation direction W2, a part of the elastic member 540 can be rotated out of the adjusting cylinder 530, so that the number of turns of the elastic member 540 located outside the adjusting cylinder 530 increases, thereby reducing the degree of stretching of the part of the elastic member 540 located outside the adjusting cylinder 530, and further reducing the elastic tension of the elastic member 540.

[0063] Through the above method, the hinge structure of the trunk lid for vehicles of the present utility model can adjust the elastic tension of the elastic member 540 by rotating the adjustment cylinder 530 according to actual needs, so as to adjust the positive torque provided by the adjustment assembly 500 in cooperation with the torsion bar 300 for the rotation of the hinge arm 200, facilitating the smooth opening of the trunk lid. At the same time, it is also more conducive to compensating for the decrease in torque of the torsion bar 300 due to too low temperature or long-term use by adjusting the increased value of the elastic tension of the elastic member 540, avoiding the situation of insufficient power to open the trunk lid, and thus ensuring the durability of the hinge structure of the trunk lid for vehicles of the present utility model.

[0064] Furthermore, the material of the adjustment cylinder 530 is a thermoplastic elastomer material (Thermoplastic Elastomer), so that there is a large frictional force between the elastic member 540 and the spiral end face of the adjustment cylinder 530 under the action of its own elastic tension, so that the part of the elastic member 540 located inside the adjustment cylinder 530 will not disengage from the adjustment cylinder 530, ensuring that the elastic member 540 can maintain a state with elastic tension.

[0065] In the above exemplary embodiment, the first rotation direction W1 and the second rotation direction W2 are opposite rotation directions. The elastic member 540 is arranged as a tension spring, and at the initial stage of opening the trunk lid, the tension spring is preset with elastic tension. At the middle and final stages of opening the trunk lid, the elastic tension of the tension spring is reduced to 0. Among them, the tension spring is a common elastic member in the prior art, and its working principle is also well-known to those skilled in the art and will not be elaborated herein. However, it should be noted that the type of the elastic member 540 herein is not limited thereto, and it can be any form in the prior art as long as the above functions can be achieved.

[0066] According to the exemplary embodiment of the present utility model, in cooperation Figure 3 As shown, the hinge arm 200 is provided with a mounting groove 210 extending along the length direction. The first hinge shaft 111 penetrates both sides of the mounting groove 210 to hinge the hinge arm 200 to the first hinge shaft 111. The connecting assembly is connected to the first hinge shaft 111 and can be accommodated in the mounting groove 210, so that when the hinge arm 200 rotates, the mounting groove 210 can prevent the connecting assembly from interfering with the hinge arm 200.

[0067] According to the exemplary embodiment of the present utility model, in cooperation Figure 3 As shown, the hinge arm 200 is provided with a second hinge shaft 220 at the third position. In cooperation Figure 9As shown, the hinge link 400 includes a first hinge link 420 and a second hinge link 430 that are arranged facing each other. The first ends of the first hinge link 420 and the second hinge link 430 are joined to each other. The hook portions 410 of the first hinge link 420 and the second hinge link 430 are joined to each other. The second ends of the first hinge link 420 and the second hinge link 430 are hinged to the second hinge shaft 220 and are respectively located on both sides of the hinge arm 200, so that the torsion bar 300 can more stably provide torque to the hinge arm 200 through the hinge link 400.

[0068] According to an exemplary embodiment of the present invention, as Figure 2 shown, a first card slot 121 with an opening facing backward is provided at the second position 120 of the hinge bracket 100. A second card slot 440 with an opening facing forward is provided at the second end of the hinge link 400. One end of the torsion bar 300 is sleeved in the first card slot 121, and the other end of the torsion bar 300 is sleeved in the second card slot 440.

[0069] Figures 10A to 10C Schematic diagrams of the moments provided by the torsion bar and the adjustment assembly for the rotation of the hinge arm at the initial stage, the intermediate stage, and the final stage when the vehicle's trunk lid is opened.

[0070] Next, with reference to the accompanying drawings, the working principle of the hinge structure for the vehicle's trunk lid of the present invention will be described.

[0071] When the trunk lid is closed, as Figure 10A shown, the hinge arm 200 has not started to rotate. The magnitude of the moment provided by the torsion bar 300 relative to the first hinge shaft 111 of the hinge arm 200 through the hinge link 400 is:

[0072]

[0073] where T1 is the torque of the torsion bar 300, d1 is the diameter of the torsion bar 300, G1 is the transverse elastic modulus of the torsion bar 300, Θ is the torsion angle of the torsion bar 300, L is the length of the torsion bar 300, s is the lever arm of the first hinge shaft 111, and t is the lever arm of the fixed point of the torsion bar 300.

[0074] The force exerted by the adjusting assembly 500 on the hook portion 410 of the hinge link 400 can be decomposed into a force F1 parallel to the length direction of the hinge link 400 and a force F2 perpendicular to the length direction of the hinge link 400. The force F1 can act on the hinge arm 200 through the hinge link 400 and cooperate with the torsion bar 300 to provide a positive torque for the rotation of the hinge arm. The force F2 cannot provide a positive torque for the rotation of the hinge arm. Therefore, the magnitude of the torque provided by the adjusting assembly 500 relative to the first hinge axis 111 of the hinge arm 200 to the hinge arm 200 through the hinge link 400 is:

[0075]

[0076] where d2 is the diameter of the spring wire of the elastic member 540, G2 is the transverse elastic modulus of the elastic member 540, N is the number of turns of the elastic member 540 (the part located outside the adjusting cylinder 530), D m is the diameter of the spring coil of the elastic member 540, and X is the tensile length of the elastic member 540 (the part located outside the adjusting cylinder 530).

[0077] At this time, the elastic member 540 (the part located outside the adjusting cylinder 530) is in a tensile state and has an elastic tensile force. The magnitude of the torque provided by the torsion bar 300 and the adjusting assembly 500 together for the hinge arm 200 is:

[0078] T = T1 + T2

[0079] where both T1 and T2 are positive torques.

[0080] In the initial stage of opening the trunk lid, in cooperation with Figure 10A as shown, the hinge arm 200 rotates around the first hinge axis 111 in the direction of opening the trunk lid under the combined action of the torque T1 provided by the torsion bar 300 and the torque T2 of the adjusting assembly 500. The tensile length of the elastic member 540 gradually decreases.

[0081] When the hinge arm 200 rotates to the first predetermined angle, the trunk lid rotates from the initial stage of opening to the intermediate stage of opening (as Figure 10B shown). The tensile length of the elastic member 540 decreases to 0. At this time, the elastic member 540 does not have an elastic tensile force, and the adjusting assembly 500 no longer provides a force for the rotation of the hinge arm 200. The hinge arm 200 continues to rotate only under the action of the torque T1 provided by the torsion bar 300.

[0082] When the hinge arm 200 rotates to the second predetermined angle, the trunk lid rotates from the intermediate stage of opening to the final stage of opening (as Figure 10CAs shown, at this time, the length of the portion of the elastic member 540 located outside the adjustment cylinder 530 can be compressed shorter, but at this time the elastic member 540 does not have an elastic restoring force, and thus does not provide a driving force for the rotation of the hinge arm 200. The hinge arm 200 continues to rotate only under the action of the torque T1 provided by the torsion bar 300 until it rotates until the trunk lid is fully opened.

[0083] The hinge structure for the trunk lid of a vehicle of the present invention provides a positive torque for the rotation of the hinge arm in cooperation with the torsion bar at the initial stage of opening the trunk lid by setting an adjustment assembly, so that the hinge structure for the trunk lid of a vehicle of the present invention can reduce the preset torsion of the torsion bar by reducing the weight of the torsion bar while meeting the driving force required for opening the trunk lid, which is not only beneficial to reducing the material cost, but also can realize the smooth opening of the trunk lid and ensure the user experience.

[0084] At the same time, the hinge structure for the trunk lid of a vehicle of the present invention, through the cooperation of the adjustment cylinder and the elastic member, enables the elastic member to have an adjustable elastic tension, which is beneficial to compensating for the decrease in torque of the torsion bar due to too low temperature or long-term use by adjusting the increase value of the elastic tension of the elastic member, so as to avoid the situation of insufficient power for opening the trunk lid.

[0085] In addition, the hinge structure for the trunk lid of a vehicle of the present invention has the characteristics of simple structure, convenient installation and debugging, and higher adaptability, and has more advantages in market competition.

[0086] For the purpose of facilitating the explanation and precise definition of the appended claims, the terms "upper", "lower", "inner", "outer", "above", "below", "upper", "lower", "upward", "downward", "front", "rear", "forward", "backward", "inner side", "outer side", "inward", "outward", "inside", "outside", "internal", "external", "forward", "backward" are used to describe the features of the exemplary specific embodiments with reference to the positions of these features shown in the drawings.

[0087] The foregoing description of the specific exemplary embodiments of the present invention has been presented for purposes of illustration and description. The foregoing description is not intended to be exhaustive or to limit the present invention to the precise forms disclosed, and obviously many changes and variations are possible in light of the above teachings. The exemplary embodiments were chosen and described in order to explain the specific principles of the present invention and its practical application, so that others skilled in the art can make and utilize various exemplary embodiments of the present invention and their various alternative forms and modifications. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hinge structure for a trunk lid of a vehicle, characterized in that, Comprising: A hinge bracket; A hinge arm, one end of which is hinged to a first position of the hinge bracket; A torsion bar, one end of which is hinged to a second position of the hinge bracket; A hinge link, a first end of which is hinged to the hinge arm, a second end of which is hinged to the other end of the torsion bar, and the hinge link is provided with an upwardly extending hook portion near the second end; And An adjustment assembly, one end of which is connected to the hook portion, the other end of which is connected to the first position of the hinge bracket, and the adjustment assembly can provide a positive torque for the rotation of the hinge arm in an initial stage when the trunk lid is opened.

2. The hinge structure for a trunk lid of a vehicle according to claim 1, characterized in that, The hinge bracket is provided with a first hinge shaft at the first position; The hinge arm is hinged to the first hinge shaft and can rotate around the first hinge shaft; The other end of the adjustment assembly is connected to the first hinge shaft.

3. The hinge structure for a trunk lid of a vehicle according to claim 2, characterized in that, The adjustment assembly includes: A connection assembly, which is connected to the first hinge shaft; An adjustment cylinder, which is rotatably arranged on the connection assembly and an end of the adjustment cylinder is provided with a spiral end face, the adjustment cylinder is hollow, the spiral end face has an opening and a notch arranged at the edge of the opening; and An elastic member, one end of which is connected to the hook portion, the other end of which is connected to the adjustment cylinder, and the elastic member has an adjustable elastic tension.

4. The hinge structure for a vehicle trunk lid according to claim 3, characterized in that, The connection assembly includes: A first connecting member, which has a large radius portion and a small radius portion, the large radius portion is located inside the adjustment cylinder, and the small radius portion extends out of the adjustment cylinder; and A second connecting member, one end of which is connected to the small radius portion, and the other end is provided with a hinge hole for the first hinge shaft to pass through.

5. The hinge structure for a trunk lid of a vehicle according to claim 4, characterized in that, The adjustment cylinder can rotate around the first connecting member, and when the adjustment cylinder rotates around the first connecting member in a first rotation direction, a part of the elastic member can rotate into the interior of the adjustment cylinder through the opening and the notch, so that the elastic tension of the elastic member increases; When the adjustment cylinder rotates around the first connecting member in a second rotation direction, a part of the elastic member can rotate out of the adjustment cylinder through the opening and the notch, so that the elastic tension of the elastic member decreases.

6. The hinge structure for a trunk lid of a vehicle according to claim 5, characterized in that, The material of the adjustment cylinder is a thermoplastic elastomer material, so that there is friction between the elastic member and the spiral end face of the adjustment cylinder under the action of the elastic tension, so that the part of the elastic member located inside the adjustment cylinder will not break away from the adjustment cylinder.

7. The hinge structure for a trunk lid of a vehicle according to claim 6, characterized in that, The hinge arm is provided with a mounting groove extending along the length direction; The first hinge shaft penetrates through both sides of the mounting groove to hinge the hinge arm to the first hinge shaft; The connection assembly can be accommodated in the mounting groove.

8. The hinge structure for a trunk lid of a vehicle according to claim 7, characterized in that, The hinge arm is provided with a second hinge shaft at the third position; The hinge link includes a first hinge link and a second hinge link arranged facing each other, and the first ends of the first hinge link and the second hinge link are joined to each other, the hook portions of the first hinge link and the second hinge link are joined to each other, and the second ends of the first hinge link and the second hinge link are hinged to the second hinge shaft and are respectively located on both sides of the hinge arm.

9. The hinge structure for a trunk lid of a vehicle according to claim 8, characterized in that, The second position of the hinge bracket is provided with a first card slot with an opening facing backward, the second end of the hinge link is provided with a second card slot with an opening facing forward, one end of the torsion bar is sleeved in the first card slot, and the other end of the torsion bar is sleeved in the second card slot.

10. The hinge structure for a trunk lid of a vehicle according to claim 9, characterized in that, The first position is more upward and more backward than the second position.

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