Tail door auxiliary device, tail door assembly and vehicle

Abstract

The invention relates to a tail door auxiliary device, a tail door assembly and a vehicle, the tail door auxiliary device comprises a plurality of torsion bars, and the plurality of torsion bars are arranged in the width direction of the vehicle. The multiple torsion bars are arranged in the width direction of the vehicle. In this way, the effective length of the single torsion bar is reduced, so that the torsion is larger. According to the technical scheme, the effective length of the single torsion bar is reduced, so that the single torsion bar can have larger torsion force, and the whole torsion bar has larger torsion force. Besides, compared with the prior art, the multiple torsion bars are arranged in the width direction of the vehicle, in the length direction of the vehicle, the occupied space of the torsion bars is small, interference with other parts of the vehicle is not likely to be generated, the space of the vehicle is not likely to be occupied, and the overall aesthetic feeling of the appearance of the vehicle is higher.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a tailgate auxiliary device, a tailgate assembly and a vehicle. Background Art

[0002] The tailgate of a vehicle is an important component located at the rear of the vehicle body, which provides convenience for storing and retrieving luggage or cargo.

[0003] The tailgates of vehicles are relatively heavy, and a tailgate balancing hinge structure is usually provided to balance the gravity of the tailgate assembly when the tailgate is opened or closed.

[0004] In the related art, the torsion bar occupies a large space as a whole, which may interfere with other parts of the vehicle and even cause abnormal noises when the vehicle is driving. It also occupies the vehicle space, making the interior space of the vehicle smaller and affecting the overall aesthetics of the vehicle's appearance. Summary of the Invention

[0005] The embodiments of the present application provide a tailgate assist device, a tailgate assembly, and a vehicle, wherein a single torsion member has a small effective length and a large torque, so as to at least partially solve the above-mentioned technical problems.

[0006] To achieve the above objectives, according to a first aspect of the present application, a tailgate assist device is provided for a vehicle. The tailgate assist device includes a torsion bar. The torsion bar is configured in plurality and arranged along the width direction of the vehicle.

[0007] Optionally, the plurality of torsion bars include a first torsion bar and a second torsion bar, and the tailgate auxiliary device further includes a first bracket, and the first torsion bar and the second torsion bar are both connected to the cargo box through the first bracket.

[0008] Optionally, the first torsion bar and the second torsion bar are symmetrically arranged about a first direction, and the first direction is perpendicular to the width direction of the vehicle.

[0009] Optionally, the first torsion bar includes a first connecting end and a second connecting end relative to each other, the first connecting end is used to connect to the tailgate of the vehicle, and the second connecting end is used to connect to the cargo box of the vehicle, so that the first torsion bar rotates with the tailgate.

[0010] Optionally, the second torsion bar includes a third connecting end and a fourth connecting end relative to each other, the fourth connecting end is used to connect to the tailgate of the vehicle, and the third connecting end is used to connect to the cargo box of the vehicle, so that the second torsion bar rotates with the tailgate of the vehicle.

[0011] Optionally, along the width direction of the vehicle, the second connection end and the third connection end are both arranged between the first connection end and the fourth connection end, or the first connection end and the fourth connection end are both arranged between the second connection end and the third connection end.

[0012] Optionally, the first bracket includes a first mounting portion, a first mounting arm and a second mounting arm, the first mounting arm and the second mounting arm are respectively connected to the first mounting portion, and the first mounting arm and the second mounting arm are spaced apart from each other on the first mounting portion along the width direction of the vehicle, the first mounting portion is used to connect to the cargo box, the second connecting end is cooperatively connected to the first mounting arm, and the third connecting end is cooperatively connected to the second mounting arm, so that the second connecting end and the third connecting end are respectively connected to the cargo box of the vehicle.

[0013] Optionally, both the first mounting arm and the second mounting arm are provided with mounting holes, the second connecting end is clamped to the mounting hole of the first mounting arm, and the third connecting end is clamped to the mounting hole of the second mounting arm.

[0014] Optionally, each of the mounting holes includes a first mounting hole and a second mounting hole spaced apart, and the second connecting end and the third connecting end are both provided with a first arm and a second arm connected by a bending connection, the first arm is passed through the first mounting hole, and the second arm is passed through the second mounting hole.

[0015] Optionally, the first torsion bar and the second torsion bar are both provided with a rod portion, the first torsion bar is connected between the first connecting end and the second connecting end, and the rod portion of the second torsion bar is connected between the third connecting end and the fourth connecting end;

[0016] The first support arm is connected to the rod portion, and the first mounting arm and the second mounting arm are both provided with a mounting notch, and the mounting notch is communicated with the first mounting hole so that the first support arm enters the first mounting hole through the mounting notch.

[0017] Optionally, the first mounting arm and the second mounting arm are both provided with a third mounting hole, and the third mounting hole is spaced apart from the first mounting hole and the second mounting hole. The third mounting hole is used for the first support arm to pass through, so that the first support arm can be installed in one of the first mounting hole and the third mounting hole. There is a first angle between the line connecting the third mounting hole and the second mounting hole and the horizontal plane, and there is a second angle between the line connecting the first mounting hole and the second mounting hole and the horizontal plane, and the second angle is different from the first angle.

[0018] Optionally, a bushing is further included, and the bushing is detachably installed between the first mounting hole and the first support arm.

[0019] Optionally, the tailgate auxiliary device also includes two second brackets, each of the second brackets includes a hinged first part and a second part, the first part is used to connect to the tailgate, and the second part is used to be fixedly connected to the cargo box, and the first parts of the two second brackets are respectively connected to the first connecting end and the fourth connecting end.

[0020] Optionally, the tailgate auxiliary device also includes multiple connecting members, one connecting member is passed through the first connecting end and the first part to connect the first torsion bar with a second bracket; another connecting member is passed through the fourth connecting end and the first part to connect the second torsion bar with another second bracket.

[0021] According to a second aspect of the present application, a tailgate assembly is provided for a vehicle, comprising the above-mentioned tailgate auxiliary device.

[0022] According to a third aspect of the present application, a vehicle is also provided, comprising the above-mentioned tailgate auxiliary device or tailgate assembly.

[0023] In the tailgate assist device of the embodiment of the present application, a plurality of the torsion bars are arranged along the width direction of the vehicle. This reduces the effective length of a single torsion bar, thereby providing a greater torsion force. The technical solution of the present application reduces the effective length of a single torsion bar, allowing a single torsion bar to have a greater torsion force, thereby allowing the torsion bar as a whole to have a greater torsion force. In addition, compared to the related art, in the embodiment of the present application, a plurality of the torsion bars are arranged along the width direction of the vehicle. Along the length direction of the vehicle, the torsion bars occupy less space, are less likely to interfere with other components of the vehicle, and are less likely to encroach on the vehicle space, resulting in a more aesthetically pleasing overall appearance of the vehicle.

[0024] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] To more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present application. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0026] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings, wherein the same drawing numbers represent the same parts in the following description.

[0027] Figure 1 is a schematic diagram of the overall structure of a tailgate assembly provided in an exemplary embodiment of the present disclosure;

[0028] Figure 2 yes Figure 1 A partial enlarged view of point A in the middle;

[0029] Figure 3 yes Figure 1 A partial enlarged view of point B in the middle;

[0030] Figure 4 yes Figure 1 Schematic diagram of some structures in;

[0031] Figure 5 yes Figure 4 A partial enlarged view of point C in the middle;

[0032] Figure 6 yes Figure 4 A partial enlarged view of point D in the middle;

[0033] Figure 7 yes Figure 1 A schematic structural diagram of the torsion bar and the second bracket;

[0034] Figure 8 yes Figure 7 A partial enlarged view of point E in the middle;

[0035] Figure 9 yes Figure 1 A schematic diagram of a first embodiment of the structure of the first bracket;

[0036] Figure 10 yes Figure 1 Schematic diagram of the structure of the first torsion bar;

[0037] Figure 11 yes Figure 1 Schematic diagram of a second embodiment of the structure of the first bracket.

[0038] Description of reference numerals:

[0039] 10. Torsion bar;

[0040] 100, first torsion bar; 101, rod portion; 104, first arm; 105, second arm; 106, second opening; 110, first connecting end; 130, second connecting end;

[0041] 200, second torsion bar; 210, third connecting end; 230, fourth connecting end;

[0042] 300, tailgate;

[0043] 400, cargo box;

[0044] 500, first bracket; 510, first mounting portion; 531, first mounting arm; 533, second mounting arm; 534, first mounting hole; 535, second mounting hole; 536, mounting notch; 537, third mounting hole; 538, fourth mounting hole;

[0045] 600, bushing;

[0046] 700, second bracket; 710, first portion; 730, first opening;

[0047] 810, second connecting member; 811, connecting head; 813, connecting rod;

[0048] 900. Gasket. DETAILED DESCRIPTION

[0049] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0050] The tailgate of a vehicle is an important component located at the rear of the vehicle body, which provides convenience for storing and retrieving luggage or cargo.

[0051] The tailgates of vehicles are relatively heavy, and a tailgate balancing hinge structure is usually provided to balance the gravity of the tailgate assembly when the tailgate is opened or closed.

[0052] In related technologies, the torsion bar occupies a large space and may interfere with other parts of the vehicle, and may even interfere with other parts and produce abnormal noises while the vehicle is driving. It also occupies the vehicle space, making the interior space of the vehicle smaller and affecting the overall aesthetics of the vehicle's appearance.

[0053] Please combine Figure 1 In a first aspect, embodiments of the present application provide a tailgate assist device for a vehicle. In some embodiments, the tailgate assist device includes a torsion bar 10 , which is configured as a plurality of torsion bars 10 , and the plurality of torsion bars 10 are arranged along the width direction of the vehicle.

[0054] In these embodiments, a plurality of torsion bars 10 are provided. There may be two or more torsion bars 10. In some embodiments, there are two torsion bars 10, and the plurality of torsion bars 10 are arranged in an array along the width direction of the vehicle. This reduces the effective length of a single torsion bar 10, thereby providing greater torsional force.

[0055] The technical solution of the present application reduces the effective length of a single torsion bar 10, enabling it to exert greater torque, and thus, the torsion bar 10 as a whole. Furthermore, compared to related art, in the embodiment of the present application, multiple torsion bars 10 are arranged along the width of the vehicle. This reduces the space occupied by the torsion bars along the length of the vehicle, making them less likely to interfere with other vehicle components or encroach on vehicle space, resulting in a more aesthetically pleasing overall appearance.

[0056] Please combine Figure 1 、 Figure 2 as well as Figure 3 In some embodiments, the plurality of torsion bars 10 include a first torsion bar 100 and a second torsion bar 200 , and the tailgate assist device further includes a first bracket 500 , and the first torsion bar 100 and the second torsion bar 200 are both connected to the cargo box 400 through the first bracket 500 .

[0057] In these embodiments, the torsion bar 10 is connected to the cargo box 400 via the first bracket 500. The first bracket 500 can be connected to the cargo box 400, and then the torsion bar 10 can be connected to the first bracket 500. This allows the first bracket 500 to protect the cargo box 400. Compared to directly connecting the torsion bar 10 to the cargo box, this effectively avoids the possibility of direct damage to the cargo box 400 caused by excessive torque on the torsion bar 10. In some examples, the first bracket 500 and the cargo box 400 can be detachably connected, such as by screwing or snapping. The first bracket 500 and the cargo box 400 can be non-detachably connected, such as by welding. The torsion bar 10 and the first bracket 500 can be detachably connected, such as by screwing or snapping. The torsion bar 10 and the first bracket 500 can be non-detachably connected, such as by welding. In some examples, the torsion bar 10 is elastic, and can be a spring-loaded torsion bar.

[0058] In some embodiments, the first bracket 500 and the cargo box 400 are screwed together. The torsion bar 10 and the first bracket 500 may be snap-fitted together.

[0059] Please combine Figure 4 、 Figure 5 as well as Figure 6 In some embodiments, the first torsion bar 100 and the second torsion bar 200 are symmetrically arranged about the first direction. Figure 4 , Figure 4The first torsion bar 100 and the second torsion bar 200 are symmetrically arranged about the axis of symmetry L1-L2. The first direction is the direction extending from L1-L2, and the first direction is perpendicular to the width of the vehicle. This allows the first torsion bar 100 and the second torsion bar 200 to be symmetrically arranged about the axis of symmetry L1-L2. This reduces the space occupied by the torsion bar 10 along the length of the vehicle, making it less likely to interfere with other vehicle components or encroach on vehicle space, thereby enhancing the overall aesthetics of the vehicle.

[0060] In some embodiments, first torsion bar 100 and second torsion bar 200 may be arranged symmetrically about a central plane.

[0061] Please combine Figure 1 、 Figure 4 、 Figure 5 as well as Figure 6 In some embodiments, the first torsion bar 100 includes a first connecting end 110 and a second connecting end 130 relative to each other, the first connecting end 110 is connected to the tailgate 300, and the second connecting end 130 is used to connect to the cargo box 400 of the vehicle so that the first torsion bar 100 rotates with the tailgate.

[0062] In these embodiments, the first connection end 110 is connected to the tailgate 300, specifically by screwing, clamping, etc. The second connection end 130 is connected to the vehicle's cargo box 400, specifically by screwing, clamping, etc. In some examples, the first connection end 110 is screwed to the tailgate 300, and the second connection end 130 is clamped to the vehicle's cargo box 400.

[0063] Please combine Figure 1 、 Figure 4 、 Figure 5 as well as Figure 6 In some embodiments, the second torsion bar 200 includes a third connecting end 210 and a fourth connecting end 230 relative to each other, the fourth connecting end 230 is connected to the tailgate, and the third connecting end 210 is used to connect to the cargo box of the vehicle so that the second torsion bar 200 rotates with the tailgate.

[0064] In these embodiments, the fourth connection end 230 is connected to the tailgate 300, specifically by screwing, snapping, etc. The third connection end 210 is connected to the vehicle's cargo box 400, specifically by screwing, snapping, etc. In some examples, the fourth connection end 230 is screwed to the tailgate 300, and the third connection end 210 is snapped to the vehicle's cargo box 400.

[0065] In some embodiments, along the width direction of the vehicle, the second connection end 130 and the third connection end 210 are both disposed between the first connection end 110 and the fourth connection end 230 , or the first connection end and the fourth connection end are both disposed between the second connection end and the third connection end.

[0066] In the tailgate assist device of the embodiment of the present application, the second and third connecting ends are both disposed between the first and fourth connecting ends along the width of the vehicle, or the first and fourth connecting ends are both disposed between the second and third connecting ends. Compared to related art solutions in which the connecting ends of the two torsion bars overlap along the width of the vehicle, the technical solution of the present application reduces the effective length of the first and second torsion bars, resulting in greater torsional force.

[0067] Please combine Figure 1 、 Figure 4 、 Figure 5 as well as Figure 6 In some embodiments, along the width direction of the vehicle, the second connection end 130 and the third connection end 210 are both disposed between the first connection end 110 and the fourth connection end 230 .

[0068] In some embodiments, the tailgate can be located at the rear of the vehicle, directly covering the trunk space. In some embodiments, the vehicle can be a pickup truck, and the tailgate can be designed to flip downward to facilitate loading and unloading of cargo, providing a convenient way for passengers and items to enter and exit the trunk.

[0069] Please combine Figure 2 In some embodiments, the first bracket 500 includes a first mounting portion 510, a first mounting arm 531 and a second mounting arm 533. Along the width direction of the vehicle, the first mounting arm 531 and the second mounting arm 533 are spaced apart from each other on the first mounting portion 510. The first mounting portion 510 is used to connect to the cargo box 400, the second connecting end 130 is cooperatively connected to the first mounting arm 531, and the third connecting end 210 is cooperatively connected to the second mounting arm 533, so that the second connecting end 130 and the third connecting end are respectively connected to the cargo box 400 of the vehicle.

[0070] In these embodiments, the first mounting arm 531 and the second mounting arm 533 are respectively connected to the first mounting portion 510. For example, the first mounting arm 531 and the second mounting arm 533 can be integrally formed with the first mounting portion 510, or can be connected by welding or other means.

[0071] The first mounting arm 531 and the second mounting arm 533 are spaced apart along the width direction of the vehicle. For example, the first mounting arm 531 and the second mounting arm 533 can be disposed at opposite ends of the first mounting portion 510 along the width direction of the vehicle. In this way, the first bracket 500 is firmly fixed and not easily deformed, and is easy to disassemble and maintain.

[0072] In some examples, the mounting bracket may be a long U-shaped structure, and the first mounting portion 510 may be fixedly connected to the rear panel of the cargo box by two bolts.

[0073] In some examples, the rear panel of a cargo box can be a key structural component connecting the vehicle's passenger compartment and cargo box. It can be located below the vehicle's trunk (or, in the case of a pickup truck, the cargo box), and is installed just below the trunk. It is a crucial component of the vehicle, primarily protecting the contents of the trunk from external impacts and collisions. It also enhances the vehicle's appearance and, in some designs, serves as an internal component connecting the left and right side panels.

[0074] In some examples, the vehicle is a pickup truck, and the rear panel may be located below the cargo box to protect items in the cargo box from external impacts or collisions.

[0075] The first mounting portion 510 can be connected to the cargo box 400 by, for example, screwing, clamping, or welding. The second connecting end 130 can be connected to the first mounting arm 531 by, for example, screwing, clamping, or welding. The third connecting end 210 can be connected to the second mounting arm 533 by, for example, screwing, clamping, or welding. In this way, the second connecting end 130 and the third connecting end can be connected to the cargo box 400 of the vehicle.

[0076] In some embodiments, both the first mounting arm 531 and the second mounting arm 533 are provided with mounting holes, the second connection end 130 is snapped into the mounting hole of the first mounting arm 531 , and the third connection end 210 is snapped into the mounting hole of the second mounting arm 533 .

[0077] In these embodiments, the second connecting end 130 of the first torsion bar 100 is connected to the first mounting arm 531 by snapping the second connecting end 130 into the mounting hole of the first mounting arm 531. Because the first mounting arm 531 and the second mounting arm 533 are spaced apart from each other on the first mounting portion 510, the first mounting arm 531 and the second mounting arm 533 can be connected to opposite ends of the first mounting portion 510 along the width direction of the vehicle. This connects the first torsion bar 100 to the cargo box 400.

[0078] The third connecting end 210 of the second torsion bar 200 is connected to the second mounting arm 533 by snapping the third connecting end 210 into the mounting hole of the second mounting arm 533. Since the first mounting arm 531 and the second mounting arm 533 are spaced apart from each other on the first mounting portion 510, the first mounting arm 531 and the second mounting arm 533 can be connected to opposite ends of the first mounting portion 510 along the width direction of the vehicle. This connects the second torsion bar 200 to the cargo box 400.

[0079] Please combine Figure 9 as well as Figure 10In some embodiments, each mounting hole includes a first mounting hole 534 and a second mounting hole 535 arranged at intervals, and the second connecting end 130 and the third connecting end 210 are both provided with a first support arm 104 and a second support arm 105 connected by a bending connection, the first support arm 104 is passed through the first mounting hole 534, and the second support arm 105 is passed through the second mounting hole 535.

[0080] In some examples, the second connecting end 130 may be provided with a first arm 104 and a second arm 105 that are bent and connected, the first mounting arm 531 is provided with a mounting hole, the mounting holes include a first mounting hole 534 and a second mounting hole 535 that are spaced apart, the first arm 104 of the second connecting end 130 of the first torsion bar 100 is passed through the first mounting hole 534, and the second arm 105 of the second connecting end 130 of the first torsion bar 100 is passed through the second mounting hole 535.

[0081] In some examples, the third connection end 210 can be provided with a first arm 104 and a second arm 105 that are bent and connected, and the second mounting arm 533 is provided with a mounting hole, and the mounting holes include a first mounting hole 534 and a second mounting hole 535 that are spaced apart, and the first arm 104 of the third connection end 210 of the second torsion bar 200 is passed through the first mounting hole 534, and the second arm 105 of the third connection end 210 of the second torsion bar 200 is passed through the second mounting hole 535.

[0082] In some embodiments, the first torsion bar 100 and the second torsion bar 200 both have a rod portion 101 , the rod portion 101 of the first torsion bar 100 is connected between the first connection end 110 and the second connection end 130 , and the rod portion 101 of the second torsion bar 200 is connected between the third connection end 210 and the fourth connection end 230 ;

[0083] In some examples, the first torsion bar 100 includes a rod portion 101 , and the rod portion 101 of the first torsion bar 100 is connected between the first connecting end 110 and the second connecting end 130 .

[0084] The first support arm 104 of the first torsion bar 100 is connected to the rod portion 101 of the first torsion bar 100, and the first mounting arm 531 is provided with a mounting notch 536. The mounting notch 536 of the first mounting arm 531 is connected to the first mounting hole 534 of the first mounting arm 531, so that the first support arm 104 of the first torsion bar 100 enters the first mounting hole 534 of the first mounting arm 531 through the mounting notch 536 of the first mounting arm 531.

[0085] In some examples, the second torsion bar 200 includes a rod portion 101 , and the rod portion 101 of the second torsion bar 200 is connected between the third connection end 210 and the fourth connection end 230 .

[0086] The first arm 104 of the second torsion bar 200 is connected to the rod portion 101 of the second torsion bar 200, and the second mounting arm 533 is provided with a mounting notch 536. The mounting notch 536 of the second mounting arm 533 is connected to the first mounting hole 534 of the second mounting arm 533, so that the first arm 104 of the second torsion bar 200 enters the first mounting hole 534 of the second mounting arm 533 through the mounting notch 536 of the second mounting arm 533.

[0087] Please combine Figure 4 , Figure 4 The first mounting arm 531 and the second mounting arm 533 are symmetrically arranged about the axis of symmetry L1-L2. The first torsion bar 100 and the second torsion bar 200 are symmetrically arranged about the axis of symmetry L1-L2, and the two second brackets are symmetrically arranged about the axis of symmetry L1-L2. The structures of the first mounting arm 531 and the second mounting arm 533 are symmetrical about the axis of symmetry L1-L2. The structure of the first mounting arm 531 is described below. The structure of the second mounting arm 533 refers to the structure of the first mounting arm 531.

[0088] In some embodiments, the first mounting arm 531 may be provided with a mounting notch 536 , which is communicated with the first mounting hole 534 , so that the first arm 104 enters the first mounting hole 534 through the mounting notch 536 .

[0089] Please combine Figure 11 In some embodiments, the first mounting arm further defines a third mounting hole 537 .

[0090] The first mounting arm 531 and the second mounting arm are both provided with a third mounting hole 537. The third mounting hole 537 is spaced apart from the first mounting hole and the second mounting hole. The third mounting hole 537 is used for the first support arm 104 to pass through. A first angle is formed between the line connecting the third mounting hole 537 and the second mounting hole and the horizontal plane. A second angle is formed between the line connecting the first mounting hole and the second mounting hole and the horizontal plane. The second angle is different from the first angle.

[0091] The first arm 104 can be specifically installed in one of the first mounting hole and the third mounting hole 537 .

[0092] In some embodiments, the third mounting hole 537 may also be provided with a mounting notch communicating with the outside, so as to facilitate the insertion of the first arm 104 .

[0093] In some examples, the first arm 104 of the first torsion bar 100 can be inserted into the first mounting hole 534 of the first mounting arm 531 through the mounting notch 536 of the first mounting arm 531 . The second arm 105 of the first torsion bar 100 is inserted into the second mounting hole 535 of the first mounting arm 531 .

[0094] In some examples, the first arm 104 of the first torsion bar 100 can be inserted into the third mounting hole 537 . The second arm 105 of the first torsion bar 100 is inserted into the second mounting hole 535 of the first mounting arm 531 .

[0095] Since a first angle is formed between a line connecting the third mounting hole 537 and the second mounting hole and the horizontal plane, a second angle is formed between a line connecting the first mounting hole and the second mounting hole and the horizontal plane.

[0096] That is, when the first arm 104 of the first torsion bar 100 enters the first mounting hole 534 of the first mounting arm 531 and the second arm 105 of the first torsion bar 100 passes through the second mounting hole 535 of the first mounting arm 531, the first torsion bar 100 has a second angle with the horizontal plane.

[0097] When the first arm 104 of the first torsion bar 100 enters the third mounting hole 537 and the second arm 105 of the first torsion bar 100 passes through the second mounting hole 535 of the first mounting arm 531, the first torsion bar 100 forms a first angle with the horizontal plane. Because the second angle differs from the first angle, the first torsion bar 100 experiences different degrees of stretch and torsion when installed in the third mounting hole 537 and the second mounting hole than when installed in the first mounting hole and the second mounting hole. This allows the torsion force of the first torsion bar 100 to be adjusted. This allows the initial deflection angle of the first torsion bar 100 to be adjusted, changing the preload force of the first torsion bar 100 and compensating for the effect of torsion force attenuation. For example, the first torsion bar 100 can be installed in either the third mounting hole 537 or the second mounting hole, or in either the first mounting hole or the second mounting hole.

[0098] Please combine Figure 11 In some examples, two semicircular holes (i.e., the third mounting hole 537 and the fourth mounting hole 538) can be opened at equal intervals at the upper and lower ends of the first mounting hole 534 to form three identical semicircular holes (i.e., the first mounting hole 534, the third mounting hole 537, and the fourth mounting hole 538).

[0099] The above description only takes the first torsion bar 100 as an example, and the second torsion bar 200 can refer to the first torsion bar 100 .

[0100] In some examples, the first hook portion may be a U-shaped hook, and the mounting notch 536 and the first mounting hole 534 form a semicircular hole, which is engaged and connected with the U-shaped hook, the semicircular hole, and the second mounting hole 535 .

[0101] Under the restriction of the first bracket 500 , the first torsion bar 100 and the second torsion bar 200 can be relatively stably fixed on the mounting bracket, thereby fixing one end of the torsion bar.

[0102] The structure of the second mounting arm 533 may be the same as that of the first mounting arm 531 . The second mounting arm 533 and the first mounting arm 531 are symmetrically disposed at opposite ends of the first mounting portion 510 .

[0103] Please combine Figure 9 as well as Figure 10 In some embodiments, the tailgate assist device further includes a bushing 600, which is removably mounted between the first mounting hole 534 and the first support arm 104. The bushing prevents wear and rust on the first torsion bar 100 and the first bracket 500. The bushing can be made of brass, which offers excellent wear and corrosion resistance.

[0104] Please combine Figure 7 as well as Figure 8 In some embodiments, the tailgate auxiliary device further includes two second brackets 700, each second bracket including a hinged first portion 710 and a second portion, the first portion 710 being used to connect to the tailgate 300, and the second portion being used to be fixedly connected to the cargo box, and the first portions 710 of the two second brackets being respectively connected to the first connection end 110 and the fourth connection end 230.

[0105] In these embodiments, the tailgate assist device further includes two second brackets 700, each of which includes a hinged first portion 710 and a second portion. The first portion 710 is configured to connect to the tailgate 300, while the second portion is configured to be fixedly connected to the cargo box, thereby hingedly connecting the tailgate 300 to the cargo box. In some embodiments, the second brackets may be hinges.

[0106] The tailgate assist device may have a symmetrical structure, that is, the first torsion bar 100 and the second torsion bar 200 are symmetrically arranged about the central plane, the first bracket 500 is symmetrically arranged about the central plane, and the two second brackets 700 are symmetrically arranged about the central plane.

[0107] Please combine Figure 4 , Figure 4 The first mounting arm 531 and the second mounting arm 533 are symmetrically arranged about the axis of symmetry L1-L2. The first torsion bar 100 and the second torsion bar 200 are symmetrically arranged about the axis of symmetry L1-L2, and the two second brackets are symmetrically arranged about the axis of symmetry L1-L2. The structures of the first mounting arm 531 and the second mounting arm 533 are symmetrical about the axis of symmetry L1-L2. The structure of one second bracket 700 is described below. The structure of the other second bracket 700 and its coordination with the torsion bar 10 can be referred to as the structure of the second bracket 700 and its coordination with the torsion bar 10.

[0108] Please combine Figure 7 as well as Figure 8The first portions 710 of the two second brackets 700 are respectively connected to the first connecting end 110 and the fourth connecting end 230. In this way, the first torsion bar 100 and the second torsion bar 200 are respectively connected to the tailgate 300.

[0109] In some embodiments, the first connection end 110 of the first torsion bar 100 is fixed relative to the tailgate, and the second connection end 130 of the first torsion bar 100 is fixed relative to the cargo box 400. In this way, when the tailgate rotates relative to the cargo box, the tailgate drives the first connection end 110 to twist relative to the second connection end 130, and the generated torque can balance the gravity of the tailgate.

[0110] The fourth connection end 230 of the second torsion bar 200 is fixed relative to the tailgate, and the third connection end 210 of the second torsion bar 200 is fixed relative to the cargo box 400. In this way, when the tailgate rotates relative to the cargo box, the tailgate drives the fourth connection end 230 to twist relative to the third connection end 210, and the generated torque can balance the gravity of the tailgate.

[0111] Please combine Figure 7 as well as Figure 8 In some embodiments, the tailgate assist device further includes a plurality of connectors 810, wherein a connector 810 is provided through the first connecting end 110 and the first portion 710 to connect the first torsion bar 100 to a second bracket 700; the plurality of connectors 810 may be a plurality of bolts, and the first torsion bar 100 and the second bracket 700 are fastened by bolts.

[0112] In some embodiments, another connecting member 810 is provided through the fourth connecting end and the first portion 710 to connect the second torsion bar to the second bracket 700. The multiple connecting members 810 can be multiple bolts, and the second torsion bar and the second bracket 700 are fastened by the bolts.

[0113] In some embodiments, the first portion 710 defines a first opening 730 , the fourth connection end 230 defines a second opening 106 , and the connector 810 passes through the second opening 106 and the first opening 730 to connect the fourth connection end 230 to the first portion 710 .

[0114] The first opening 730 and the second opening 106 may be coaxially assembled.

[0115] In some embodiments, a connector 810 includes a connector head 811 and a connecting rod 813. The vehicle further includes a gasket 900, which is located on the side of the fourth connecting end 230 facing away from the first portion 710. One end of the connecting rod 813 is sequentially passed through the gasket 900, the second opening 106, and the first opening 730, and is connected to the first portion 710. The connector head is located on the side of the gasket 900 facing away from the first portion 710. The gasket 900 can be a circular gasket. The gasket 900 can be provided with anti-slip texture to provide a tightening effect.

[0116] In some embodiments, the fourth connecting end 230 of the second torsion bar 200 can be fixed to the bottom of the tailgate by bolts, a circular washer, and the second bracket 700. This balances the weight of the tailgate during opening and reduces effort when closing the tailgate.

[0117] In some embodiments, the vehicle includes a connector 810 , the first portion 710 is provided with a first opening 730 , the fourth connection end 230 is provided with a second opening 106 , and the connector 810 is passed through the second opening 106 and the first opening 730 to connect the fourth connection end 230 to the first portion 710 .

[0118] In some examples, the fourth connecting end 230 of the second torsion bar 200 is provided with a circular hook structure, thereby forming the second opening 106 .

[0119] In some examples, the first connecting end 110 of the first torsion bar 100 may also be provided with a circular hook structure, so that the first torsion bar 100 and the second torsion bar 200 can be symmetrically arranged with respect to the first direction.

[0120] The fourth connection end 230 of the second torsion bar 200 and the first connection end 110 of the first torsion bar 100 can be fixed to the bottom of the tailgate by bolts in combination with the circular gasket and the second bracket 700. This combination can effectively transmit the torque to the tailgate, thereby assisting the opening and closing of the tailgate.

[0121] The material of the torsion bar 10 of the present application can be a metal structural part, which can make the torsion bar 10 have better rigidity and better ability to resist plastic deformation.

[0122] In some embodiments, the tailgate assist device can be secured to the vehicle door via the first connecting end 110 of the first torsion bar 100, secured to the rear panel of the vehicle's cargo box 400 via the second connecting end 130 of the first torsion bar 100, secured to the vehicle door via the fourth connecting end 230 of the second torsion bar 200, and secured to the rear panel of the vehicle's cargo box 400 via the third connecting end 210 of the second torsion bar 200. Each second bracket includes a hinged first portion 710 and a second portion. The first portion 710 is configured to connect to the tailgate 300, while the second portion is configured to be fixedly connected to the cargo box. The first portions 710 of the two second brackets are respectively connected to the first and fourth connecting ends. The second bracket 700 is hinged. When the tailgate is opened, the hinge rotates, causing the first and second torsion bars 100 and 200 to twist at the hinge ends. The twist angle gradually increases, increasing the torque. This balances gravity and reduces the impact force caused by gravity during the tailgate's descent. During the closing process of the tailgate, the first torsion bar 100 and the second torsion bar 200 can overcome gravity, thereby achieving the effect of effortless closing.

[0123] The tailgate assist device in the embodiment of the present application can be used with most reliable and practical hinges for cargo box tailgates, and has high versatility. The embodiment of the present application provides a new torsion bar arrangement, namely, multiple torsion bars 10 are arranged along the width of the vehicle, which reduces the space occupied along the length of the vehicle and reduces the diameter of the torsion bar spring. This allows a smaller torsion bar diameter to achieve high torque, thereby increasing the upper limit of application for relatively heavy tailgates and reducing the layout space.

[0124] The embodiment of the present application provides a new torsion bar matching and fixing method with a simple structure, easy processing, high reliability, strong practicality, and easy maintenance and assembly.

[0125] The tailgate auxiliary device of the embodiment of the present application has the advantages of simple structure, small size, space saving, easy installation and maintenance, and low cost.

[0126] In some embodiments, the second connecting end 130 can also be bent 90 degrees to pass through the mounting hole of the rear panel of the cargo box and fixed with a snap.

[0127] In some embodiments, the tailgate assist device may be disposed at the lower section of the tailgate of the pickup truck cargo box.

[0128] In the embodiment of the present application, the first torsion bar 100 and the second torsion bar 200 are symmetrically arranged, which has the effect of a small effective length of the torsion bar and a large torque.

[0129] In a second aspect, a tailgate assembly is also provided. The tailgate assembly is used for a vehicle and includes the above-mentioned tailgate auxiliary device.

[0130] According to a second aspect of the present disclosure, a tailgate assembly is provided, which includes the tailgate assist device described above. The tailgate assembly has all the beneficial effects of the tailgate assist device described above, and the present disclosure will not elaborate on them here.

[0131] In a third aspect, a vehicle is also provided, comprising the above-mentioned tailgate auxiliary device or the above-mentioned tailgate assembly.

[0132] According to a third aspect of the present disclosure, a vehicle is provided, comprising the tailgate assist device or the tailgate assembly described above. The vehicle has all the beneficial effects of the tailgate assist device or the tailgate assembly described above, which will not be further elaborated herein.

[0133] The vehicle may be a fuel vehicle, a plug-in hybrid vehicle, a new energy vehicle, etc., and this disclosure does not make any specific limitations on this.

[0134] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0135] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0136] The embodiments, implementation methods and related technical features of the present application can be combined and replaced with each other without conflict.

[0137] The above are merely preferred embodiments of the present application and do not constitute any form of limitation to the present application. However, any modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application shall still fall within the scope of the technical solution of the present application.

Claims

1. A tailgate assist device for a vehicle, characterized in that: The tailgate auxiliary device includes a torsion bar (10), wherein the torsion bar (10) is configured in plurality, and the plurality of torsion bars (10) are arranged in a row along the width direction of the vehicle.

2. The tailgate assist device according to claim 1, characterized in that: The plurality of torsion bars (10) include a first torsion bar (100) and a second torsion bar (200), and the tailgate auxiliary device further includes a first bracket (500), and the first torsion bar (100) and the second torsion bar (200) are both connected to the cargo box (400) through the first bracket (500).

3. The tailgate assist device according to claim 2, characterized in that: The first torsion bar (100) and the second torsion bar (200) are symmetrically arranged with respect to a first direction, and the first direction is perpendicular to the width direction of the vehicle.

4. The tailgate assist device according to claim 2, characterized in that: The first torsion bar (100) comprises a first connecting end (110) and a second connecting end (130) opposite to each other, wherein the first connecting end (110) is used to connect to a tailgate (300) of a vehicle, and the second connecting end (130) is used to connect to a cargo box (400) of the vehicle, so that the first torsion bar (100) rotates with the tailgate.

5. The tailgate assist device according to claim 4, characterized in that: The second torsion bar (200) includes a third connecting end (210) and a fourth connecting end (230) opposite to each other, the fourth connecting end (230) being used to connect to a tailgate (300) of a vehicle, and the third connecting end (210) being used to connect to a cargo box (400) of the vehicle, so that the second torsion bar (200) rotates along with the tailgate (300) of the vehicle.

6. The tailgate assist device according to claim 5, characterized in that: Along the width direction of the vehicle, the second connection end (130) and the third connection end (210) are both arranged between the first connection end (110) and the fourth connection end (230), or the first connection end and the fourth connection end are both arranged between the second connection end and the third connection end.

7. The tailgate assist device according to claim 5, characterized in that: The first bracket (500) includes a first mounting portion (510), a first mounting arm (531) and a second mounting arm (533). The first mounting arm (531) and the second mounting arm (533) are spaced apart on the first mounting portion (510) along the width direction of the vehicle. The first mounting portion (510) is used to connect to the cargo box (400). The second connecting end (130) is connected to the first mounting arm (531). The third connecting end (210) is connected to the second mounting arm (533) so that the second connecting end (130) and the third connecting end (210) are respectively connected to the cargo box (400) of the vehicle.

8. The tailgate assist device according to claim 7, characterized in that: The first mounting arm (531) and the second mounting arm (533) are both provided with mounting holes, the second connecting end (130) is clamped to the mounting hole of the first mounting arm (531), and the third connecting end (210) is clamped to the mounting hole of the second mounting arm (533).

9. The tailgate assist device according to claim 8, characterized in that: Each of the mounting holes comprises a first mounting hole (534) and a second mounting hole (535) arranged at intervals, the second connecting end (130) and the third connecting end (210) are both provided with a first support arm (104) and a second support arm (105) connected in a bent manner, the first support arm (104) is passed through the first mounting hole (534), and the second support arm (105) is passed through the second mounting hole (535).

10. The tailgate assist device according to claim 9, characterized in that: The first torsion bar (100) and the second torsion bar (200) are both provided with a rod portion (101), the rod portion (101) of the first torsion bar (100) is connected between the first connecting end (110) and the second connecting end (130), and the rod portion (101) of the second torsion bar (200) is connected between the third connecting end (210) and the fourth connecting end (230); The first support arm (104) is connected to the rod portion, and the first mounting arm (531) and the second mounting arm are both provided with a mounting notch (536), and the mounting notch (536) is communicated with the first mounting hole (534), so that the first support arm (104) enters the first mounting hole (534) through the mounting notch (536).

11. The tailgate assist device according to claim 10, characterized in that: The first mounting arm (531) and the second mounting arm are both provided with a third mounting hole, and the third mounting hole is spaced apart from the first mounting hole and the second mounting hole. The third mounting hole is used for the first support arm (104) to pass through, so that the first support arm (104) can be installed in one of the first mounting hole (534) and the third mounting hole (537). A first angle is formed between a line connecting the third mounting hole and the second mounting hole and a horizontal plane, and a second angle is formed between a line connecting the first mounting hole and the second mounting hole and a horizontal plane, and the second angle is different from the first angle.

12. The tailgate assist device according to claim 9, characterized in that: The invention also includes a bushing (600), wherein the bushing (600) is detachably installed between the first mounting hole (534) and the first support arm (104).

13. The tailgate assist device according to claim 5, characterized in that: The tailgate auxiliary device further includes two second brackets (700), each of the second brackets (700) including a hinged first portion (710) and a second portion, the first portion (710) being used to connect to the tailgate (300), and the second portion being used to be fixedly connected to the cargo box, the first portions (710) of the two second brackets (700) being connected to the first connecting end (110) and the fourth connecting end (230), respectively.

14. The tailgate assist device according to claim 13, characterized in that: The tailgate assist device further comprises a plurality of connecting members (810), A connecting member (810) is provided through the first connecting end (110) and the first portion (710) to connect the first torsion bar (100) to the second bracket (700); Another connecting member (810) is provided through the fourth connecting end and the first portion (710) to connect the second torsion bar with another second bracket (700).

15. A tailgate assembly for a vehicle, characterized in that: The invention comprises a tailgate assist device according to any one of claims 1 to 14.

16. A vehicle, characterized in that: The invention comprises the tailgate assist device according to any one of claims 1 to 14 or the tailgate assembly according to claim 15.

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