Vehicle back door assembly and vehicle

Abstract

The invention provides a vehicle back door assembly and a vehicle, and relates to the technical field of vehicles, the vehicle back door assembly comprises a back door and a back door electric supporting rod used for supporting the back door, the types used for selecting the back door comprise an empennage-free back door and an active empennage back door, the weight of the empennage-free back door and the weight of the active empennage back door are sequentially increased, and when the selected back door is one of the two types, the back door electric supporting rod is used for supporting the back door. One end of the back door electric supporting rod is supported on the same supporting point of the back door; when the back door is an empennage-free back door, the gravitational torque of the back door is adjusted to reach the supporting rod torque of the reference electric supporting rod; and when the back door is the active empennage back door, the reference electric supporting rod is arranged on the back door, so that the supporting force of the reference electric supporting rod meets the use requirement of the active empennage back door under the first set working condition. In this way, the back door with the no-empennage back door and the back door with the active empennage can be opened and closed through one set of electric supporting rods.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular to a vehicle tailgate assembly and a vehicle. Background Art

[0002] With the rapid development of the vehicle industry, more and more vehicles are equipped with spoilers on the tailgate to reduce the lift at the rear of the vehicle, increase the downforce at the rear of the vehicle and the grip of the entire vehicle, thereby improving the aerodynamic performance of the rear of the vehicle as well as the sporty and premium feel of the vehicle.

[0003] At present, in vehicles with tailgates, the tailgate systems of the same model include two types: the basic tailgate without a rear wing and the active tailgate with an active rear wing. Due to the different weights and centers of gravity of different tailgates, it is necessary to design dedicated electric strut structures for different tailgates to achieve full balance, opening and closing of the tailgate, which in turn leads to a significant increase in the development and manufacturing costs of the electric strut structure and the tailgate sheet metal. Summary of the invention

[0004] The problem solved by the present invention is how to make two types of tailgate systems, a tailgate without a tail wing and a tailgate equipped with an active tail wing, compatible, so as to reduce the development and manufacturing cost of the vehicle.

[0005] In order to solve the above problems, the present invention provides a vehicle back door assembly and a vehicle.

[0006] The present invention provides a vehicle tailgate assembly, comprising a tailgate electric support rod and a tailgate, wherein the tailgate electric support rod is used to support the tailgate, and the types of the tailgate selected include a tailgate without a tail wing and a tailgate with an active tail wing. When the tailgate selected is one of the above two types, one end of the tailgate electric support rod is supported on the same supporting point of the tailgate; wherein the weight of the tailgate without a tail wing is less than the weight of the tailgate with an active tail wing; the tailgate with an active tail wing is taken as a reference tailgate, and the tailgate electric support rod matched with the active tail wing is taken as a reference electric support rod;

[0007] When the tail door is the tailless tail door, the gravity moment of the tail door is adjusted according to the weight of the tail door so that the gravity moment of the tail door reaches the strut moment of the reference electric strut;

[0008] When the tail door is the active rear wing tail door, the reference electric support rod is arranged on the tail door so that the supporting force of the reference electric support rod meets the use requirement of the first set working condition of the active rear wing tail door.

[0009] Optionally, when the selected tailgate is the tailless tailgate, the vehicle tailgate assembly also includes a counterweight block, the weight of the counterweight block satisfies a first preset condition, and the installation position of the counterweight block on the tailgate is located at the center of gravity of the counterweight block, and the gravity moment of the tailgate is adjusted by the counterweight block.

[0010] Optionally, the first preset condition includes: 0≤M0-(M2+n)≤1kg; wherein, M0 is the weight of the reference tail door, M2 is the weight of the tailless tail door, and n is the weight of the counterweight block.

[0011] Optionally, the calculation formula for the center of gravity position of the counterweight block includes:

[0012] X1=(M0*X3-M2*X2) / M0;

[0013] Y1=(M0*Y3-M2*Y2) / M0;

[0014] Z1=(M0*Z3-M2*Z2) / M0;

[0015] Among them, X1, Y1, and Z1 are respectively the center-of-gravity coordinates of the counterweight block, X2, Y2, and Z2 are respectively the center-of-gravity coordinates of the tailless dorsal door, X3, Y3, and Z3 are respectively the center-of-gravity coordinates of the reference dorsal door, M0 is the weight of the reference dorsal door, and M2 is the weight of the tailless dorsal door.

[0016] Optionally, the first set operating condition includes normal temperature condition, high temperature condition, low temperature condition, slope condition and snow load condition.

[0017] Optionally, the counterweight block is a resonance block, and the resonance block includes a counterweight portion and a vibration-damping pad, and the counterweight portion is connected to the installation position on the back door through the vibration-damping pad.

[0018] Optionally, when the selected tailgate is one of the tail-less tailgate and the active tailgate, the other end of the tailgate electric support rod is supported on the same mounting point of the vehicle body.

[0019] Optionally, the counterweight is used to be installed on a sheet metal part or an interior trim panel of the tailgate.

[0020] Optionally, the type of tailgate selected also includes a large tail wing tailgate, the weight of which is greater than the weight of the active tail wing tailgate; when the selected tailgate is the large tail wing tailgate, and the weight of the tailgate meets a second preset condition, the supporting force of the reference electric support rod is adjusted so that the supporting force of the reference electric support rod meets the use requirement of a second set operating condition of the large tail wing tailgate, wherein the second set operating condition is a partial condition of the first set operating condition.

[0021] The present invention also provides a vehicle, comprising the vehicle tailgate assembly as described above.

[0022] The beneficial effects of the vehicle tailgate assembly and the vehicle of the present invention are as follows: two different types and weights of tailgates, a tail-wingless tailgate and an active tailgate, can be supported at the same supporting point of the tailgate by a set of tailgate electric struts, so that the two different tailgates can be opened and closed by a set of electric struts. Specifically, when the selected tailgate is a tail-wingless tailgate, the gravity moment of the tailgate is adjusted according to the weight of the tailgate, so that the gravity moment of the tailgate reaches the strut moment of the reference electric strut, and then reaches the gravity moment of the reference tailgate; when the selected tailgate is an active tailgate, the reference electric strut is configured on the tailgate, that is, the electric strut matched with the active tailgate is directly assembled on the active tailgate, so that the supporting force of the reference electric strut meets the use requirements of the first set working condition of the active tailgate. In this way, the tailgates of the two configurations, the tailless tailgate and the active tailgate, can be opened and closed with a set of electric struts, which not only saves the development and design costs, material management costs, test costs and error prevention costs of the electric struts, but also ensures that the installation points of the electric struts on the tailgate are consistent, thereby ensuring that the tailgate sheet metal welding assembly can be universal, thereby saving the development and design costs, material management costs, mold costs, tooling and fixture costs, welding costs and error prevention costs of the tailgate sheet metal welding assembly, and reducing the production cost of the entire tailgate system. In addition, adjusting the gravity moment of the tailless tailgate to be close to the gravity moment of the reference tailgate can prevent the tailless tailgate from suddenly popping open to the maximum opening angle after unlocking when the reference electric strut is applied to the tailless tailgate. In this way, on the one hand, the impact force when the tailgate pops open can be avoided from causing harm to the user, ensuring the safety of the tailgate system, and on the other hand, it can avoid a large collision between the tailgate and the surrounding body structure, extending the service life of the tailgate. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the structure of a vehicle back door assembly in an embodiment of the present invention;

[0024] Figure 2 Schematic diagram of moment balance of a back door system in an embodiment of the present invention;

[0025] Figure 3 It is a schematic diagram of the assembly structure of the reference electric support rod and the tailless back door in an embodiment of the present invention;

[0026] Figure 4 It is a schematic diagram of the assembly structure of the reference electric support rod and the active rear wing back door in an embodiment of the present invention;

[0027] Figure 5 It is a schematic diagram of the assembly structure of the reference electric support rod and the large rear wing back door in an embodiment of the present invention.

[0028] Description of reference numerals:

[0029] 1. No tail wing tail door; 2. Active tail wing tail door; 3. Large tail wing tail door; 4. Standard electric support rod. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. Although certain embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be interpreted as being limited to the embodiments described herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the drawings and embodiments of the present invention are only for exemplary purposes and are not intended to limit the scope of protection of the present invention.

[0031] The Z axis in the drawings represents the vertical direction, that is, the up-down position, and the positive direction of the Z axis represents the top, and the reverse direction of the Z axis represents the bottom; the X axis in the drawings represents the horizontal direction, and is designated as the front-back position, and the positive direction of the X axis represents the back side, and the reverse direction of the X axis represents the front side. It should also be noted that the aforementioned Z axis and X axis are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0032] The term "including" and its variations used in this document are open inclusions, that is, "including but not limited to"; the term "based on" means "based at least in part on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one other embodiment"; the term "some embodiments" means "at least some embodiments"; the term "optionally" means "optional embodiments". The relevant definitions of other terms will be given in the following description. It should be noted that the concepts of "first", "second", etc. mentioned in the present invention are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0033] It should be noted that the modifications of "one" and "plurality" mentioned in the present invention are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0034] In the related art, in vehicles with tailgates, the tailgate systems of the same model include two types: a basic tailgate without a rear wing and an active tailgate with an active rear wing. Due to the different weights and centers of gravity of different tailgates, it is necessary to design dedicated electric strut structures for different tailgates to achieve full balance, opening and closing of the tailgate, which in turn leads to a significant increase in the development and manufacturing costs of the electric strut structure and the tailgate sheet metal.

[0035] In view of the problems existing in the above-mentioned related technologies, the present invention provides a vehicle tailgate assembly and a vehicle.

[0036] Combination Figures 1 to 4 As shown, a vehicle tailgate assembly provided by an embodiment of the present invention includes a tailgate electric support rod and a tailgate, wherein the tailgate electric support rod is used to support the tailgate, and the types of tailgates selected include a tailgate without a wing 1 and an active tailgate 2. When the selected tailgate is one of the above two types, one end of the tailgate electric support rod is supported on the same supporting point of the tailgate; wherein, the weight of the tailgate without a wing 1 is less than the weight of the active tailgate 2, the active tailgate 2 is taken as the reference tailgate, and the electric support rod adapted to the active tailgate 2 is taken as the reference electric support rod 4.

[0037] Specifically, the tailgate and the electric support rod together constitute the tailgate system of the vehicle. In the tailgate system, the electric support rod supports the tailgate from falling based on the principle of moment balance, that is, the gravity moment of the tailgate is equal to the supporting moment of the electric support rod, which makes the sum of the moments of the tailgate zero and does not rotate, thereby ensuring that the tailgate does not fall after opening. Figure 2 As shown, P1 is the hinge point of the back door, P2 is the center of gravity of the back door, P3 is the door opening operation point, P4 is the door closing operation point, P5 is the installation point of the electric support rod on the back door, P6 is the installation point of the electric support rod on the vehicle body (it may not be), α represents the opening angle of the back door, F 开 is the maximum force when opening the back door, F 关 is the maximum force when closing the back door; assuming the weight of the back door is G 重 , the force arm of gravity is d 重 , the gravitational moment of gravity is M 重 , the supporting force of the electric support rod is F 杆 , the arm of the supporting force of the electric support rod is d 杆 , the moment of the supporting force is M 杆 ; According to the moment balance principle, M 重 -M 杆 =0, that is, M 重 =M 杆 According to whether there is a tail wing configuration, the tail door can be divided into a tailless tail door 1 and an active tail wing tail door 2, such as Figure 3 to Figure 4As shown, in addition, in the same series of models, the weight of the tailgate 1 without a tail wing and the tailgate 2 with an active tail wing increases successively, and the center of gravity positions are also different, that is, the gravity moments of the tailgates of these two configurations are different. Since the supporting torque of a set of electric struts is unique, if it is necessary to make the tailgates of these two configurations supported by a set of electric struts at the same supporting point of the tailgate, the gravity moments of the tailgates of these two configurations must be as close as possible, so that a set of electric struts can be compatible with both configurations with and without a tail wing, and the tailgate can be fully balanced to open and close. Based on this, the active tailgate 2 is usually used as the reference tailgate, and the electric strut that is compatible with the active tailgate 2 is used as the reference electric strut 4, and the gravity moment of the tailgate 1 with a smaller weight is made as close as possible to the gravity moment of the active tailgate 2.

[0038] When the selected tailgate is a tailless tailgate 1, the gravity moment of the tailgate is adjusted according to the weight of the tailgate, so that the gravity moment of the tailgate reaches the strut moment of the reference electric strut 4. Among them, since the weight of the tailless tailgate 1 is usually less than that of the active tailgate 2, the gravity moment of the tailless tailgate 1 is usually increased by, for example, adding a configuration block, so that the gravity moment of the tailless tailgate 1 is close to the strut moment of the reference electric strut 4, and the strut moment of the reference electric strut 4 is equal to the gravity moment of the reference tailgate, so making the gravity moment of the tailless tailgate 1 close to the strut moment of the reference electric strut 4 is equivalent to making the gravity moment of the tailless tailgate 1 close to the gravity moment of the reference electric strut 4, so that the reference electric strut 4 can be suitable for the tailless tailgate.

[0039] When the selected tailgate is the active tailgate 2, the reference electric support rod 4 is configured on the tailgate so that the support force of the reference electric support rod 4 meets the use requirements of the first set working condition of the active tailgate 2. Among them, the first set working condition of the active tailgate 2 can be the full working condition of the active tailgate 2. Since the active tailgate 2 is the reference tailgate and the reference electric support rod 4 can meet the use requirements of the full working condition of the active tailgate 2, the active tailgate 2 can be directly adapted to the reference electric support rod 4 to achieve full balanced opening and closing of the tailgate.

[0040] In this embodiment, two different types and weights of tailgates, a wingless tailgate 1 and an active tailgate 2, can be supported at the same supporting point of the tailgate by a set of tailgate electric support rods, so that the two different tailgates can be opened and closed by a set of electric support rods. Specifically, when the selected tailgate is a wingless tailgate 1, the gravity moment of the tailgate is adjusted according to the weight of the tailgate, so that the gravity moment of the tailgate reaches the support rod moment of the reference electric support rod 4, and then reaches the gravity moment of the reference tailgate; when the selected tailgate is an active tailgate 2, the reference electric support rod 4 is configured on the tailgate, that is, the electric support rod compatible with the active tailgate 2 is directly assembled on the active tailgate 2, so that the supporting force of the reference electric support rod 4 meets the use requirements of the first set working condition of the active tailgate 2. In this way, the two types of tailgates, the tailless tailgate 1 and the active tailgate 2, can be opened and closed with a set of electric struts, which can not only save the development and design costs, material management costs, test costs and error prevention costs of the electric struts, but also ensure that the installation points of the electric struts on the tailgate are consistent, so that the tailgate sheet metal welding assembly can be universal, thereby saving the development and design costs, material management costs, mold costs, tooling and fixture costs, welding costs and error prevention costs of the tailgate sheet metal welding assembly, and reducing the production cost of the entire tailgate system. In addition, adjusting the gravity moment of the tailless tailgate 1 to be close to the gravity moment of the reference tailgate can prevent the tailless tailgate 1 from suddenly popping open to the maximum opening angle after unlocking when the reference electric strut 4 is applied to the tailless tailgate 1. In this way, on the one hand, the impact force when the tailgate pops open can be avoided from causing harm to the user, ensuring the safety of the use of the tailgate system, and on the other hand, it can avoid a large collision between the tailgate and the surrounding body structure, extending the service life of the tailgate.

[0041] Optionally, when the selected tailgate is one of the tailgate without wing 1 and the active tailgate 2, the other end of the tailgate electric support rod is supported on the same mounting point of the vehicle body. The other end of the tailgate electric support rod refers to the end of the tailgate electric support rod away from the tailgate.

[0042] In this way, it can be ensured that the body sheet metal welding assemblies of the same series of models can be universal, thereby saving the development and design costs and mold costs of the body sheet metal welding assemblies.

[0043] Optionally, when the selected tailgate type is a tailless tailgate 1, the vehicle tailgate assembly also includes a counterweight block, the weight of the counterweight block meets preset conditions, and the installation position of the counterweight block on the tailgate is located at the center of gravity of the counterweight block, so as to adjust the gravity moment of the tailgate through the counterweight block.

[0044] In this optional embodiment, the weight of the counterweight block can be equal to the weight difference between the reference tailgate and the tailless tailgate 1, or slightly less than the weight difference. The center of gravity position of the counterweight block is determined based on the center of gravity position of the tailgate and the center of gravity position of the reference tailgate. The center of gravity coordinates of the tailgate and the center of gravity coordinates of the reference tailgate have been determined during the production process, that is, the center of gravity position of the tailgate and the center of gravity position of the reference tailgate are known. In addition, the configuration block is usually arranged inside the tailgate trim, which can be installed on a sheet metal part or integrated into the trim structure. In actual applications, it needs to be determined based on the installation space, the weight and center of gravity of the counterweight block. In this way, when the tailgate type is a tailless tailgate 1, the weight of the tailless tailgate 1 can be increased by adding a counterweight to the tailless tailgate 1, thereby increasing the gravity moment of the tailless tailgate 1, so that the gravity moment of the tailless tailgate 1 reaches the strut moment of the reference electric strut 4, and then approaches the gravity moment of the reference tailgate, so that the tailless tailgate 1 can use the reference electric strut 4 to achieve fully balanced opening and closing.

[0045] Optionally, the first preset condition includes: 0≤M0-(M2+n)≤1kg; wherein M0 is the weight of the reference tail door, M2 is the weight of the tail door 11 without a tail wing, and n is the weight of the counterweight block.

[0046] Specifically, in one example, if the weight M0 of the reference tailgate is 50kg and the weight M2 of the tailless tailgate 1 is 45kg, a counterweight weighing 4kg-5kg can be selected; in another example, if the weight M0 of the reference tailgate is 50kg and the weight M2 of the tailless tailgate 1 is 40kg, a counterweight weighing 9kg-10kg can be selected.

[0047] In this way, by setting the first preset condition to 0≤M0-(M2+n)≤1kg, the weight requirement for the counterweight block can be reduced while ensuring that the weight of the tailgate 1 without a ballast block is close to the weight of the active tailgate 2.

[0048] Optionally, the calculation formula for the center of gravity position of the counterweight block includes:

[0049] X1=(M0*X3-M2*X2) / M0;

[0050] Y1=(M0*Y3-M2*Y2) / M0;

[0051] Z1=(M0*Z3-M2*Z2) / M0;

[0052] Among them, X1, Y1, and Z1 are the center-of-gravity coordinates of the counterweight block, X2, Y2, and Z2 are the center-of-gravity coordinates of the tailless dorsal door 1, X3, Y3, and Z3 are the center-of-gravity coordinates of the reference dorsal door, M0 is the weight of the reference dorsal door, and M2 is the weight of the tailless dorsal door 1.

[0053] In this optional embodiment, based on the moment balance principle, when the center of gravity coordinates of the reference tail door and the center of gravity coordinates of the tailless tail door 1 are known, the center of gravity of the reference tail door, the center of gravity of the tailless tail door 1 and the center of gravity of the counterweight block satisfy the following relationship:

[0054] X1*M0+X2*M2=X3*M0;

[0055] Y1*M0+Y2*M2=Y3*M0;

[0056] Z1*M0+Z2*M2=Z3*M0;

[0057] The calculation formula for the center of gravity position of the counterweight block can be deduced based on the above relationship, so as to realize the calculation of the center of gravity position of the counterweight block.

[0058] Optionally, the counterweight block is a resonance block, which includes a counterweight portion and a vibration-damping pad, and the counterweight portion is connected to the mounting position on the tailgate through the vibration-damping pad. In this way, the counterweight block is designed as a resonance block, so that the setting of the counterweight block can not only make the gravity moment of the tailless tailgate 1 close to the gravity moment of the reference tailgate, but also effectively improve the mode of the tailgate system, killing two birds with one stone.

[0059] Optionally, the first set operating condition includes normal temperature condition, high temperature condition, low temperature condition, slope condition and snow load condition.

[0060] In this optional embodiment, since the vehicle equipped with the active rear tailgate 2 is usually a household vehicle, in order to ensure that the adjusted reference electric strut 4 can be fully applicable to the active rear tailgate 2, it is necessary to ensure that the supporting force of the adjusted reference electric strut 4 can meet all operating conditions of the active rear tailgate 2, namely normal temperature conditions, high temperature conditions, low temperature conditions, slope conditions and snow load conditions.

[0061] Optionally, the type of tailgate for selection also includes a large tail wing tailgate 3, the weight of which is greater than the weight of the active tail wing tailgate 2; when the selected tailgate is the large tail wing tailgate 3, and the weight of the tailgate meets the second preset condition, the supporting force of the reference electric support rod 4 is adjusted so that the supporting force of the reference electric support rod 4 meets the use requirements of the second set operating condition of the large tail wing tailgate 3, wherein the second set operating condition is a partial operating condition of the first set operating condition.

[0062] In this optional embodiment, when the selected tailgate is a large tailgate 3 and the weight of the tailgate meets the second preset condition, the support force of the reference electric support rod 4 is adjusted so that the support force of the reference electric support rod 4 meets the use requirements of the second set working condition of the large tailgate 3. Among them, the second set working condition is a partial working condition of the first set working condition, for example, the second set working condition can be the basic working condition of the large tailgate 3. In addition, for the large tailgate 3 with a weight greater than the reference tailgate, if the weight of the large tailgate 3 is reduced to make its gravity moment close to the gravity moment of the reference tailgate, it is necessary to make a major change to the large tailgate 3, which is not only difficult to implement, but also has a high cost for improving the design. Based on this, this embodiment adopts increasing the support force of the reference electric support rod 4 by increasing the spring force and friction force of the reference electric support rod 4, so as to ensure that the reference electric support rod 4 after the increased support force can meet the use requirements of the second set working condition of the large tailgate 3, for example, to achieve the full balance opening and closing of the large tailgate 3 under the basic working condition. In this way, the three types of tail doors, namely, the tailless tail door 1, the active tail door 2 and the large tail door 3, can be opened and closed by using a set of electric struts.

[0063] Furthermore, when the selected tailgate is one of the three types of tailgate without tail 1, active tailgate 2 and large tailgate 3, one end of the tailgate electric support rod is supported at the same support point of the tailgate. In this way, by using a set of tailgate electric support rods to support three different types and weights of tailgates at the same support point of the tailgate, the installation point of the electric support rod on the tailgate can be consistent, thereby ensuring that the three tailgate sheet metal welding assemblies can be universally used.

[0064] Optionally, the second preset condition includes: 1kg≤M0+m-M1≤2kg; wherein, M0 is the weight of the reference tail door, M1 is the weight of the large tail wing tail door 3, and m is the maximum snow load weight of the reference tail door.

[0065] Specifically, in one example, if the weight M0 of the reference tailgate and the maximum snow load m are 50kg and 3kg respectively, the weight M1 of the large tailgate 3 can be controlled between 51kg and 52kg during design; in another example, if the weight M0 of the reference tailgate and the maximum snow load m are 60kg and 5kg respectively, the weight M1 of the large tailgate 3 can be controlled between 63kg and 64kg during design.

[0066] In this way, by setting the second preset condition to 1kg≤M0+m-M1≤2kg, the weight of the large rear wing tailgate 3 can be controlled within a reasonable range that is relatively close to the weight of the active rear wing tailgate 2, thereby reducing the requirements for the supporting force of the reference electric support rod 4 and the difficulty of adjustment.

[0067] Optionally, combined Figure 5As shown, when the selected tailgate is the large tail wing tailgate 3 and the weight of the tailgate meets the second preset condition, the supporting force of the reference electric support rod 4 is adjusted by adjusting the spring force and friction force of the reference electric support rod 4 so that the supporting force of the reference electric support rod 4 meets the use requirements of the second set working condition of the large tail wing tailgate 3.

[0068] Among them, the spring force of the reference electric support rod 4 can be made to reach the set spring force by increasing the wire diameter or the number of spring coils of the mechanical coil spring in the reference electric support rod 4, so as to increase the spring force of the reference electric support rod 4, and the friction force of the reference electric support rod 4 can be made to reach the set friction force by replacing the damper corresponding to the friction plate in the reference electric support rod 4, that is, the damper of the friction plate is replaced with a damper with a larger damping force, so as to increase the friction force of the reference electric support rod 4.

[0069] In this optional embodiment, when it is necessary to apply the reference electric support rod 4 to the large tail wing tail door 3, the supporting force of the reference electric support rod 4 can be increased by increasing the spring force and friction force of the reference electric support rod 4, thereby realizing the adjustment of the supporting force of the reference electric support rod 4; moreover, by making the adjusted reference electric support rod 4 meet the use requirements of the second set working condition of the large tail wing tail door 3, the reference electric support rod 4 with increased supporting force can be applied to both the tailless tail door 1 and the active tail wing tail door 2, and the large tail wing tail door 3, thereby ensuring that a set of electric support rod structures is used to be compatible with the three configurations of tail doors, namely, the tailless tail door 1, the active tail wing tail door 2 and the large tail wing tail door 3.

[0070] Optionally, the second set operating condition includes a normal temperature condition, a high temperature condition and a low temperature condition.

[0071] In this optional embodiment, since the vehicle equipped with the large rear wing tailgate 3 is usually used as a racing car, its usage scenarios basically do not involve slopes and snow loads. Therefore, when adjusting the supporting force of the reference electric support rod 4, it is only necessary to make the adjusted supporting force meet the basic operating conditions of the large rear wing tailgate 3, such as normal temperature conditions, high temperature conditions and low temperature conditions, thereby reducing the requirements for the supporting force of the reference electric support rod 4 and the difficulty of adjustment.

[0072] Optionally, the second setting condition includes normal temperature condition, high temperature condition, low temperature condition, slope condition and snow load condition. When the selected tail door is the large tail wing tail door 3, the maximum slope of the tail door is less than the preset maximum slope value of the large tail wing tail door 3, and / or the maximum snow load of the tail door is less than the preset maximum snow load of the large tail wing tail door 3.

[0073] In this optional embodiment, when the adjusted reference electric support rod 4 cannot meet the set snow load condition of the large tail wing back door 3, the slope and the maximum snow load can be compromised, that is, the maximum slope of the back door is designed to be less than the preset maximum slope value of the large tail wing back door 3, and the maximum snow load of the back door is designed to be less than the preset maximum snow load of the large tail wing back door 3. For example, if the preset maximum slope value of the large tail wing back door 3 is 20% and the preset maximum snow load is 3kg, when compromising the slope and the maximum snow load, the maximum slope of the back door can be reduced from 20% to 10%, and the maximum snow load of the back door can be reduced by 1-1.5kg, for example, the maximum snow load is reduced from 3kg to 2kg or 1.5kg. In this way, the adjusted reference electric support rod 4 can not only meet the use requirements of the basic working condition of the large tail wing back door 3, but also meet the slope working condition with a smaller slope and / or the snow load working condition with a smaller snow load.

[0074] A vehicle provided by an embodiment of the present invention includes the vehicle tailgate assembly as described above.

[0075] The vehicle provided in this embodiment has the same beneficial effects as the above-mentioned vehicle tailgate assembly, which will not be described in detail here.

[0076] Although the present invention is disclosed as above, the protection scope of the present invention is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will fall within the protection scope of the present invention.

Claims

1. A vehicle back door assembly, comprising a back door electric support rod and a back door, wherein the back door electric support rod is used to support the back door, characterized in that: The type of the tailgate for selection includes a tailless tailgate (1) and an active tailgate (2); when the selected tailgate is one of the above two types, one end of the tailgate electric support rod is supported on the same support point of the tailgate; wherein the weight of the tailless tailgate (1) is less than the weight of the active tailgate (2); the active tailgate (2) is taken as a reference tailgate, and the tailgate electric support rod matched with the active tailgate (2) is taken as a reference electric support rod (4); When the tail door is the tailless tail door (1), the gravity moment of the tail door is adjusted according to the weight of the tail door so that the gravity moment of the tail door reaches the strut moment of the reference electric strut (4); When the tail door is the active tail wing tail door (2), the reference electric support rod (4) is arranged on the tail door so that the supporting force of the reference electric support rod (4) meets the use requirements of the first set working condition of the active tail wing tail door (2).

2. The vehicle back door assembly according to claim 1, characterized in that: When the selected tailgate is the tailless tailgate (1), the vehicle tailgate assembly further comprises a counterweight block, the weight of which satisfies a first preset condition, and the installation position of the counterweight block on the tailgate is located at the center of gravity of the counterweight block, and the gravity moment of the tailgate is adjusted by the counterweight block.

3. The vehicle back door assembly according to claim 2, characterized in that: The first preset condition includes: 0≤M0-(M2+n)≤1kg; Wherein, M0 is the weight of the reference tail door, M2 is the weight of the tailless tail door (1), and n is the weight of the counterweight block.

4. The vehicle back door assembly according to claim 2, characterized in that: The calculation formula of the center of gravity position of the counterweight block includes: X1=(M0*X3-M2*X2) / M0; Y1=(M0*Y3-M2*Y2) / M0; Z1=(M0*Z3-M2*Z2) / M0; Among them, X1, Y1, and Z1 are respectively the coordinates of the center of gravity of the counterweight block, X2, Y2, and Z2 are respectively the coordinates of the center of gravity of the tailless dorsal door (1), X3, Y3, and Z3 are respectively the coordinates of the center of gravity of the reference dorsal door, M0 is the weight of the reference dorsal door, and M2 is the weight of the tailless dorsal door (1).

5. The vehicle back door assembly according to claim 1, characterized in that: The first set operating condition includes normal temperature condition, high temperature condition, low temperature condition, slope condition and snow load condition.

6. The vehicle back door assembly according to claim 2, characterized in that: The counterweight block is a resonance block, and the resonance block includes a counterweight portion and a vibration-damping pad, and the counterweight portion is connected to the installation position on the back door through the vibration-damping pad.

7. The vehicle back door assembly according to claim 1, characterized in that: When the selected tail door is one of the tail-less tail door (1) and the active tail door (2), the other end of the tail door electric support rod is supported on the same installation point of the vehicle body.

8. The vehicle back door assembly according to claim 2, characterized in that: The counterweight is mounted on a sheet metal part or an interior trim panel of the back door.

9. The vehicle tailgate assembly according to claim 1, characterized in that: The type of tailgate selected also includes a large tail wing tailgate (3), the weight of which is greater than the weight of the active tail wing tailgate (2); when the selected tailgate is the large tail wing tailgate (3), and the weight of the tailgate meets a second preset condition, the supporting force of the reference electric support rod (4) is adjusted so that the supporting force of the reference electric support rod (4) meets the use requirements of a second set working condition of the large tail wing tailgate (3), wherein the second set working condition is a partial working condition of the first set working condition.

10. A vehicle, characterized in that: The invention comprises a vehicle tailgate assembly as claimed in any one of claims 1 to 9.

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