Driving device, tail gate system and vehicle

Abstract

The utility model provides a driving device. The driving device comprises a driving element, a transmission assembly, a nut and a lead screw. The driving element is used for providing driving force; the transmission assembly is used for receiving the driving force provided by the driving element, and the transmission assembly is provided with a rotating axis; the nut is arranged on the transmission assembly and driven by the transmission assembly to rotate. The lead screw is matched with the nut, so that when the nut is driven by the transmission assembly to rotate, the lead screw can move in the axial direction relative to the nut. The nut is provided with at least two swing axes relative to the transmission assembly. The angle between the axis of the lead screw and the rotating axis of the transmission assembly can be changed. The utility model further provides a tail gate system and a vehicle.

Description

Technical Field

[0001] The present disclosure relates to a driving device, a tailgate system and a vehicle. Background Art

[0002] The information provided in this section is only background information related to the present disclosure, and it is not necessarily prior art.

[0003] For vehicles in the prior art, such as station wagons, off-road vehicles (SUVs), crossover vehicles (XUVs), etc., the chassis is relatively high. When the tailgate of these vehicles only includes one door, it is difficult to load and unload goods into the vehicle.

[0004] Therefore, a vehicle may be provided with a split tailgate system in the prior art, that is, the split tailgate system of the vehicle includes two doors, one of which can be opened upward and the other can be opened downward, thereby facilitating the user to load and unload goods into the vehicle.

[0005] However, during the opening process of the lower door, the gravity of the door actuates the opening process and makes it difficult to effectively control the opening process; moreover, during the closing process of the door, the gravity of the door hinders the closing process of the door. Therefore, a driving device with a relatively large power is required to close the door.

[0006] Therefore, it is necessary to design a driving device, a tailgate system and a vehicle for a vehicle to solve the above technical problems. Summary of the Utility Model

[0007] To solve one of the above technical problems, the present disclosure provides a driving device, a tailgate system and a vehicle.

[0008] According to one aspect of the present disclosure, a driving device is provided, which includes:

[0009] A driving element for providing a driving force;

[0010] A transmission assembly for receiving the driving force provided by the driving element, and the transmission assembly has a rotation axis;

[0011] A nut provided on the transmission assembly and driven by the transmission assembly to rotate;

[0012] A lead screw that cooperates with the nut so that when the nut is driven and rotated by the transmission assembly, the lead screw can move axially relative to the nut;

[0013] Wherein, the nut has at least two swing axes relative to the transmission assembly; so that the angle between the axis of the lead screw and the rotation axis of the transmission assembly can change.

[0014] A driving device according to at least one embodiment of the present disclosure, wherein the transmission assembly includes:

[0015] A worm, which is connected to the driving element to receive the driving force provided by the driving element; and

[0016] A worm gear, which is in transmission connection with the worm to drive the worm gear to rotate through the rotation of the worm.

[0017] A driving device according to at least one embodiment of the present disclosure, wherein an upper support frame and a lower support frame are provided inside the worm gear, and both the upper support frame and the lower support frame are in transmission connection with the worm gear.

[0018] A driving device according to at least one embodiment of the present disclosure, wherein an upper bearing is provided on the upper support frame; a lower bearing is provided on the lower support frame.

[0019] A driving device according to at least one embodiment of the present disclosure, wherein a spherical groove is formed inside the upper support frame; a spherical groove is formed inside the lower support frame, and at least a part of the outer surface of the lead screw nut is formed as a spherical surface, so that the lead screw nut forms a spherical fit with the upper support frame and the lower support frame.

[0020] A driving device according to at least one embodiment of the present disclosure, wherein a pin structure is provided on the lead screw nut, an upper receiving groove is formed on the upper support frame, and at least a part of the pin structure is located inside the upper receiving groove.

[0021] A driving device according to at least one embodiment of the present disclosure, wherein the width of the upper receiving groove is greater than the diameter of the pin structure; the height of the upper receiving groove is greater than the diameter of the receiving groove.

[0022] According to another aspect of the present disclosure, a tailgate system is provided, which includes the above-mentioned driving device.

[0023] A tailgate system according to at least one embodiment of the present disclosure, further includes:

[0024] A door member, which is pivotally connected to the vehicle body, wherein the pivot axis of the door member relative to the vehicle body is arranged substantially horizontally, and when the door member is in the closed position, the center of gravity of the door member is located above the pivot axis; wherein the driving device is arranged on the door member and is connected to the vehicle body.

[0025] A tailgate system according to at least one embodiment of the present disclosure, further includes:

[0026] A force applying device, the force applying device being connected to a door member and a vehicle body, wherein the force applying device is configured to: when the door member is in an opening process, the force applying device applies a resistance force to the door member.

[0027] For a tailgate system according to at least one embodiment of the present disclosure, when the door member is in a closed position, the force applying device applies a first pulling force to the door member, the first pulling force being capable of hindering the opening movement of the door member; when the door member is in a closed position, the force applying device applies a second pulling force to the door member, the second pulling force being used to actuating the closing movement of the door member; wherein, the first pulling force is less than the second pulling force.

[0028] For a tailgate system according to at least one embodiment of the present disclosure, the force applying device includes:

[0029] A spring element, one end of the spring element being connected to the door member, and the other end of the spring element being connected to the vehicle body through a link structure.

[0030] For a tailgate system according to at least one embodiment of the present disclosure, the link structure includes:

[0031] A plate member, the plate member being rotatably provided on the door member; wherein, the spring element is connected to the plate member and is capable of applying a pulling force to the plate member;

[0032] A rod member, one end of the rod member being rotatably connected to the plate member, and the other end of the rod member being rotatably connected to the door member;

[0033] Wherein, the plate member is configured to: when the door member moves from the closed position to the open position, as the plate member rotates, the spring element is stretched.

[0034] For a tailgate system according to at least one embodiment of the present disclosure, the force applying device includes:

[0035] A damping element, one end of the damping element being pivotally connected to the door member, and the other end of the damping element being pivotally connected to the link structure and being connected to the vehicle body through the link structure.

[0036] For a tailgate system according to at least one embodiment of the present disclosure, the link structure includes:

[0037] A plate member, the plate member being rotatably provided on the door member; wherein, the damping element is pivotally connected to the plate member;

[0038] A rod member, one end of the rod member being rotatably connected to the plate member, and the other end of the rod member being rotatably connected to the door member;

[0039] Wherein, the plate member is configured such that as the door member moves from the closed position to the open position, the damping element provides damping as the plate member rotates.

[0040] In the tailgate system according to at least one embodiment of the present disclosure, a support frame is provided on the door member, and the plate member is rotatably provided on the support frame.

[0041] In the tailgate system according to at least one embodiment of the present disclosure, the plate member includes three corners. One corner of the plate member is rotatably provided on the support frame; another corner of the plate member is connected to a spring element or a damping element; the third corner of the plate member is rotatably connected to a rod member.

[0042] In the tailgate system according to at least one embodiment of the present disclosure, one end of the rod member is connected to the plate member by a ball joint; the other end of the rod member is connected to the door member by a ball joint.

[0043] According to another aspect of the present disclosure, there is provided a vehicle including the above-described driving device or including the above-described tailgate system. Description of the Drawings

[0044] The drawings illustrate exemplary embodiments of the present disclosure and, together with the description thereof, are used to explain the principles of the present disclosure. These drawings are included to provide a further understanding of the present disclosure and are included in this specification and form a part of this specification.

[0045] Figure 1 is a schematic structural view of a tailgate system of a vehicle according to an embodiment of the present disclosure.

[0046] Figure 2 is a schematic structural view of another angle of the tailgate system of a vehicle according to an embodiment of the present disclosure.

[0047] Figure 3 is a schematic structural view of a force application device according to an embodiment of the present disclosure.

[0048] Figure 4 is a schematic structural view of a partial structure of a driving structure according to an embodiment of the present disclosure.

[0049] Figure 5 is a schematic structural view of a lead nut of a driving structure according to an embodiment of the present disclosure.

[0050] Figure 6 is a schematic structural view of an upper support frame and a lower support frame of a driving structure according to an embodiment of the present disclosure.

[0051] Figure 7Exploded schematic diagram of a partial structure of a drive structure according to an embodiment of the present disclosure.

[0052] Figure 8 Schematic diagram of a force application device according to another embodiment of the present disclosure.

[0053] In the figure, the reference numerals are specifically as follows:

[0054] 100 Door component

[0055] 110 Covering part

[0056] 120 Connecting part

[0057] 130 Second bracket

[0058] 200 Force application device

[0059] 210 Link structure

[0060] 211 Plate component

[0061] 212 Rod component

[0062] 213 Support frame

[0063] 214 First ball head structure

[0064] 220 Spring element

[0065] 230 Damping element

[0066] 300 Vehicle body

[0067] 310 First bracket

[0068] 320 Third bracket

[0069] 330 Second ball head structure

[0070] 340 Fourth bracket

[0071] 350 Third ball head structure

[0072] 400 Driving device

[0073] 410 Housing

[0074] 420 Driving element

[0075] 430 Transmission assembly

[0076] 431 Worm

[0077] 432 Worm gear

[0078] 440 Nut

[0079] 450 Lead Screw

[0080] 460 Upper Support Frame

[0081] 461 Upper Bearing

[0082] 470 Lower Support Frame

[0083] 471 Lower Bearing

[0084] 480 Pin Structure Detailed Implementation Manner

[0085] The present disclosure will be further described in detail below in conjunction with the accompanying drawings and the implementation manner. It can be understood that the specific implementation manner described herein is only used to explain the relevant content and does not limit the present disclosure. Additionally, it should be noted that for the convenience of description, only the parts related to the present disclosure are shown in the accompanying drawings.

[0086] It should be noted that, without conflict, the implementation manners and the features in the implementation manners in the present disclosure can be combined with each other. The technical solutions of the present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with the implementation manner.

[0087] Unless otherwise specified, the exemplary implementation manners / embodiments shown will be understood to provide exemplary features of various details of some ways that can implement the technical concept of the present disclosure in practice. Therefore, unless otherwise specified, without departing from the technical concept of the present disclosure, the features of various implementation manners / embodiments can be additionally combined, separated, interchanged, and / or rearranged.

[0088] In the accompanying drawings, cross-hatching and / or shading are generally used to make the boundaries between adjacent components clear. Thus, unless stated, the presence or absence of cross-hatching or shading does not convey or imply any preference or requirement for the specific material, material properties, dimensions, proportions, commonalities between the shown components, and / or any other characteristics, attributes, properties, etc. of the components. Additionally, in the accompanying drawings, for the purpose of clarity and / or description, the dimensions and relative dimensions of the components may be exaggerated. When the exemplary embodiments can be implemented differently, the specific process sequences can be performed in a different order than described. For example, two consecutively described processes can be performed substantially simultaneously or in an order opposite to the described order. Additionally, the same reference numerals represent the same components.

[0089] When a component is referred to as being “on” or “above” another component, “connected to” or “coupled to” another component, the component can be directly on the other component, directly connected to or directly coupled to the other component, or there can be intervening components. However, when a component is referred to as being “directly on” another component, “directly connected to” or “directly coupled to” another component, there are no intervening components. For this reason, the term “connected” can refer to physical connection, electrical connection, etc., and can have or not have intervening components.

[0090] For descriptive purposes, the present disclosure may use spatial relative terms such as “under,” “below,” “beneath,” “lower,” “above,” “upper,” “on,” “over,” “higher,” and “side (e.g., as in “sidewall”)” etc., to describe the relationship of one component to another (other) component as shown in the figures. In addition to the orientation depicted in the figures, the spatial relative terms are also intended to encompass different orientations of the device during use, operation, and / or manufacture. For example, if the device in the figures is turned over, a component described as “under” or “beneath” another component or feature will then be positioned “above” the other component or feature. Thus, the exemplary term “under” can encompass both an “above” and “below” orientation. In addition, the device can be otherwise positioned (e.g., rotated 90 degrees or at other orientations), and accordingly, the spatial relative descriptors used herein are to be interpreted accordingly.

[0091] The terms used herein are for the purpose of describing particular embodiments and are not intended to be limiting. As used herein, unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “the” are also intended to include the plural forms. In addition, when the terms “comprises” and / or “comprising” and their variations are used in this specification, it is stated that there are the stated features, integers, steps, operations, components, assemblies, and / or groups thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, assemblies, and / or groups thereof. It should also be noted that, as used herein, the terms “substantially,” “about,” and other similar terms are used as approximate terms and not as terms of degree, so they are used to explain the inherent deviations of measured, calculated, and / or provided values that would be recognized by a person of ordinary skill in the art.

[0092] Figure 1 is a schematic structural view of a tailgate system of a vehicle according to an embodiment of the present disclosure. Figure 2 is a schematic structural view of another angle of the tailgate system of the vehicle according to an embodiment of the present disclosure.

[0093] As Figure 1 and Figure 2As shown, the tailgate system of the vehicle of the present disclosure may include components such as a door member 100 and a force-applying device 200.

[0094] The door member 100 of the present disclosure is pivotally connected to the vehicle body 300 of the vehicle. Among them, the pivot axis of the door member 100 relative to the vehicle body 300 is arranged substantially horizontally, and when the door member 100 is in the closed position, the center of gravity of the door member 100 is located above the pivot axis. In addition, when the door member 100 is in the open position, the center of gravity of the door member 100 may be located above the pivot axis or below the pivot axis, and the present disclosure does not limit this.

[0095] That is to say, the door member 100 of the present disclosure may be the ground door in the sky-and-ground door of the vehicle. Thus, during the opening process of the door member 100, the center of gravity of the door member 100 will gradually decrease.

[0096] Specifically, the door member 100 of the present disclosure may include a covering portion 110 and a connecting portion 120; among them, the covering portion 110 can be formed as at least part of the outer surface of the vehicle, and the connecting portion 120 is arranged on the covering portion 110 for connecting components such as the force-applying device 200.

[0097] The door member 100 of the present disclosure includes an open position and a closed position. Among them, when the door member 100 is in the closed position, the covering portion 110 is arranged substantially vertically, and correspondingly, the connecting portion 120 is arranged substantially horizontally. When the door member 100 is in the open position, the covering portion 110 is arranged substantially horizontally, and correspondingly, the connecting portion 120 is arranged substantially vertically.

[0098] In some embodiments, a first bracket 310 is arranged on the vehicle body 300, a second bracket 130 is arranged on the connecting portion 120 of the door member 100, and the first bracket 310 and the second bracket 130 are pivotally connected around the above pivot axis, so that the door member 100 and the vehicle body 300 can rotate relative to each other. Moreover, due to the arrangement of the first bracket 310 and the second bracket 130, the connecting portion 120 of the door member 100 can be far away from the vehicle body 300. Correspondingly, when the door member 100 rotates, it will not collide with the vehicle body 300.

[0099] In addition, two first brackets 310 of the present disclosure may be arranged, and correspondingly, two second brackets 130 are also arranged, so that the door member 100 has a stable envelope line during the opening or closing process.

[0100] When the door member 100 rotates around the pivot axis, it can move between the open position and the closed position.

[0101] Those skilled in the art should be aware that the vehicle tailgate system of the present disclosure may further include a sky door (not shown in the figures). The sky door is pivotally connected to the vehicle frame, and during the opening process of the sky door, its center of gravity will gradually rise. In a specific embodiment, the sky door can be connected to the vehicle frame through a tailgate strut and an electric drive, so that the sky door can be automatically opened. Considering that the structure of the sky door can be implemented by adopting the solutions in the prior art, the present disclosure will not elaborate on this one by one.

[0102] The force application device 200 is connected to the door component 100 and the vehicle body 300. Among them, the force application device 200 is configured to: when the door component 100 is in the opening process, the force application device 200 applies a resistance force to the door component 100; when the door component 100 is in the closing process, the force application device 200 applies an actuating force to the door component 100.

[0103] Specifically, when the door component 100 is in the closed position, the force application device 200 applies a first pulling force to the door component 100, and the first pulling force can hinder the opening movement of the door component 100; when the door component 100 is in the closed position, the force application device 200 applies a second pulling force to the door component 100, and the second pulling force is used to actuate the closing movement of the door component 100; wherein, the first pulling force is less than the second pulling force.

[0104] When the tailgate system of the vehicle of the present disclosure is in use, when the door component 100 moves from the closed position to the open position, the center of gravity of the door component 100 will gradually decrease, and as the opening angle increases, the center of gravity of the door component 100 will drop more rapidly. Based on this, the pulling force applied by the force application device 200 of the present disclosure to the door component 100 will also gradually increase, so that the force application device 200 can apply damping to the opening process of the door component 100 and reduce the opening speed of the door component 100.

[0105] When the door component 100 is in the closed position, the driving device 400 can apply a thrust force to the door component 100, so that the door component 100 leaves the closed position and moves towards the open position. During this process, depending on the relationship between the first moment generated by the pulling force applied by the force application device 200 to the door component 100 on the door component 100 and the second moment generated by the gravity of the door component 100, the driving device 400 can adopt different control strategies.

[0106] Specifically, when the first moment is greater than the second moment, the driving device 400 needs to apply a thrust force to the door component 100 so that the door component 100 can be normally opened; on the other hand, when the first moment is less than or equal to the second moment, the driving device 400 needs to generate a certain braking effect so that the door component 100 can be controllably opened.

[0107] Figure 3Schematic structural diagram of a force application device according to an embodiment of the present disclosure.

[0108] The force application device 200 of the present disclosure may include components such as a link structure 210 and a spring element 220.

[0109] One end of the spring element 220 is connected to the door component 100, and the other end of the spring element 220 is connected to the vehicle body 300 through the link structure 210; thus, in the tailgate system of the vehicle of the present disclosure, the spring element 220 can apply a pulling force to the door component 100 through the pulling force generated in the stretched state.

[0110] That is to say, in the tailgate system of the vehicle of the present disclosure, regardless of which position the door component 100 is in, that is, whether the door component 100 is in the closed position, the open position, or an intermediate position between the closed position and the open position, the spring element 220 is in a stretched state, and correspondingly, the force application device 200 can always apply a pulling force to the door component 100.

[0111] More specifically, the link structure 210 may include components such as a plate component 211, a rod component 212, and a support frame 213.

[0112] The support frame 213 may be provided on the door component 100, for example, provided on the connecting portion 120 of the door component 100, thus, the support frame 213 of the present disclosure can move with the movement of the door component 100.

[0113] The plate component 211 is rotatably provided on the support frame 213, thus, the plate component 211 can rotate relative to the door component 100. In a preferred embodiment, the pivot axis of the plate component 211 relative to the door component 100 is perpendicular to or substantially perpendicular to the covering portion 110 of the door component 100.

[0114] In a specific embodiment, the plate component 211 includes three corners, one corner of the plate component 211 is rotatably provided on the support frame 213; another corner of the plate component 211 is connected to the other end of the spring element 220, and at this time, one end of the spring element 220 is connected to the door component 100; correspondingly, the spring element 220 can apply a pulling force to the plate component and make the plate component 211 have a tendency to rotate.

[0115] The third corner of the plate component 211 is rotatably connected to one end of the rod component 212, and the other end of the rod component 212 is rotatably connected to the door component 100; thus, when the vehicle door is opened or closed, taking the plate component 211 as an intermediate force transmission mechanism, the spring element 220 can store or release energy, and correspondingly, the rod component 212 is always in a compressed state.

[0116] In one embodiment, the plate member 211 is arranged such that when the door member 100 moves from the closed position to the open position, as the plate member 211 rotates, the spring element 220 is stretched. Conversely, when the door member 100 moves from the open position to the closed position, as the plate member 211 rotates, the spring element 220 can be shortened, so that the spring element 220 can release part of its elastic potential energy.

[0117] In the present disclosure, a first ball head structure 214 is provided on the plate member 211, wherein the first ball head structure 214 has a preset distance from one surface of the plate member 211. In addition, a third bracket 320 is provided on the vehicle body 300, and a second ball head structure 330 is provided on the third bracket 320. At this time, both ends of the rod member 212 are formed as ball socket structures. Correspondingly, through the cooperation of the ball socket structure at one end of the rod member 212 and the first ball head structure 214, a ball hinge connection structure is formed. Moreover, through the cooperation of the ball socket structure at the other end of the rod member 212 and the second ball head structure 330, a ball hinge connection structure is also formed, and one end of the rod member 212 is ball-hinged to the plate member 211; the other end of the rod member 212 is ball-hinged to the door member 100.

[0118] Thus, through this ball hinge connection structure, the rod member 212 can have more degrees of rotational freedom, so that during the opening or closing process of the door member 100, the movement of the door member 100 and the movement of the rod member 212 will not interfere with each other. Correspondingly, the rod member 212 will not be stuck.

[0119] Figure 4 is a schematic structural view of a part of the drive structure according to an embodiment of the present disclosure. Figure 5 is a schematic structural view of the lead nut of the drive structure according to an embodiment of the present disclosure. Figure 6 is a schematic structural view of the upper support frame and the lower support frame of the drive structure according to an embodiment of the present disclosure. Figure 7 is an exploded schematic structural view of a part of the drive structure according to an embodiment of the present disclosure.

[0120] In the present disclosure, as Figure 1 and Figure 2 shown, the drive device 400 of the present disclosure can be fixed to the door member 100 and connected to the vehicle body 300, so that when the drive device 400 operates, the door member 100 can be opened or closed.

[0121] Specifically, a fourth bracket 340 is provided on the vehicle body 300, and a third ball head structure 350 is provided on the fourth bracket 340. Correspondingly, the driving device 400 can form a ball socket structure, and form a ball joint connection with the third ball head structure 350 through the ball socket structure, preventing the driving device 400 from getting stuck during the process of opening or closing the door component 100.

[0122] In one embodiment, as Figures 4 to 7 shown, the driving device 400 of the present disclosure may include components such as a housing 410, a driving element 420, a transmission assembly 430, a nut 440, and a lead screw 450.

[0123] Among them, the housing 410 of the present disclosure can be fixed to the connecting portion 120 of the door component 100, whereby the driving device 400 of the present disclosure can be fixed to the door component 100. Of course, those skilled in the art should know that the driving device 400 of the present disclosure can also be fixed to the vehicle body 300 and connected to the door component 100. Correspondingly, this connection method can also realize the driving of the door component 100 and enable the door component 100 to be opened or closed.

[0124] The driving element 420 can be fixed to the housing 410 and is used to provide a driving force; in a specific embodiment, the driving element 420 can be selected as a motor, and the motor can be a DC motor, a servo motor, or a reduction motor, etc., and the motor can use a 12V DC power supply so that the driving device 400 of the present disclosure can be conveniently connected to the low-voltage power supply of the vehicle.

[0125] The transmission assembly 430 is used to receive the driving force provided by the driving element 420, and the transmission assembly 430 has a rotation axis; in a specific embodiment, the transmission assembly 430 may include a worm 431 and a worm gear 432; among them, the worm 431 is connected to the driving element 420. For example, the worm 431 can be connected to the output shaft of the driving element 420 to receive the driving force provided by the driving element 420, and the rotation axis of the worm gear 432 coincides with the rotation axis of the driving element 420.

[0126] The worm gear 432 is in transmission connection with the worm 431 to drive the worm gear 432 to rotate through the rotation of the worm 431, where the rotation axis of the worm gear 432 is the rotation axis of the above-mentioned transmission assembly 430.

[0127] In a preferred embodiment, the worm 431 may be provided with a friction damping sheet, so that the drive device 400 of the present disclosure has a certain damping effect, so that the door component 100 can have a slower speed during the opening process, so that the tailgate system of the present disclosure can be easily controlled. Of course, the friction damping sheet can also be provided on rotating components such as the worm gear 432, the upper support frame 460, the lower support frame 470 and the nut 440, and the present disclosure will not repeat these structures one by one.

[0128] The nut 440 is disposed on the transmission assembly 430 and is driven by the transmission assembly 430 to rotate; the screw rod 450 cooperates with the nut 440, so that when the nut 440 is driven and rotated by the transmission assembly 430, the screw rod 450 can generate axial movement relative to the nut 440. In a specific embodiment, a ball-and-socket structure is formed at one end of the nut 440, and the ball-and-socket structure can form a ball-joint connection with the third ball head structure 350.

[0129] The nut 440 has at least two swing axes relative to the transmission assembly 430, so that the angle between the axis of the screw rod 450 and the rotation axis of the transmission assembly 430 can be changed; that is, the axis of the screw rod 450 disclosed in the present invention can be inconsistent with the rotation axis of the worm wheel 432, and accordingly, when the door component 100 is in the process of opening or closing, the axis of the screw rod 450 can change position relative to the rotation axis of the worm wheel 432, thereby, the drive device 400 will not have problems such as getting stuck.

[0130] In a preferred embodiment, Figures 5 to 7 As shown, the worm wheel 432 of the present disclosure is provided with an upper support frame 460 and a lower support frame 470, wherein the upper support frame 460 and the lower support are both connected to the worm wheel 432 in a transmission manner. In a specific embodiment, a tooth-like protrusion is formed on the inner surface of the worm wheel 432, and correspondingly, a groove structure is formed on the upper support frame 460 and the lower support frame 470, so that the tooth-like protrusion is arranged in the groove structure to realize the transmission connection between the worm wheel 432 and the upper support frame 460 and the lower support frame 470. In other words, in the present disclosure, the worm wheel 432, the upper support frame 460 and the lower support frame 470 can rotate synchronously.

[0131] An upper bearing 461 is provided on the upper support frame 460; a lower bearing 471 is provided on the lower support frame 470. Therefore, the overall structure formed by the worm gear 432, the upper support frame 460 and the lower support frame 470 of the present invention can be rotatably supported inside the shell 410 through the upper bearing 461 and the lower bearing 471; at the same time, the shell 410 can also limit the axial position of the upper bearing 461 and the lower bearing 471, so that the upper support frame 460 and the lower support frame 470 of the present invention can be in close contact without separation.

[0132] In a preferred embodiment, a spherical groove is formed inside the upper support frame 460; a spherical groove is formed inside the lower support frame 470, and at least a part of the outer surface of the lead nut 440 is formed as a spherical surface, so that the lead nut 440 forms a spherical fit with the upper support frame 460 and the lower support frame 470; in other words, the lead nut 440 of the present disclosure can also form a spherical hinge connection with the overall structure formed by the upper support frame 460 and the lower support frame 470.

[0133] To drive the lead nut 440, in the present disclosure, a pin structure 480 is provided on the lead nut 440, and an upper receiving groove is formed on the upper support frame 460. At least a part of the pin structure 480 is located in the upper receiving groove. Thus, when the upper support frame 460 generates a rotational movement, the side wall of the upper receiving groove can contact the pin structure 480 with pressure, and thereby drive the lead nut 440 to rotate.

[0134] In a preferred embodiment, the pin structure 480 can be two, and these two pin structures 480 are located on the same diameter line of the lead nut 440.

[0135] In the present disclosure, the width of the upper receiving groove is greater than the diameter of the pin structure 480; the height of the upper receiving groove is greater than the diameter of the receiving groove. Thus, there is a certain movement margin for the pin structure 480 in the receiving groove, so that the lead nut 440 generates a swinging movement with multiple degrees of freedom.

[0136] In the tailgate system of the vehicle of the present disclosure, due to the setting of the force application device 200, the driving device 400 can use a motor with a smaller power, solving the problems mentioned in the background art.

[0137] Figure 8 It is a schematic structural diagram of a force application device according to another embodiment of the present disclosure.

[0138] As Figure 8 shown, the difference in the implementation manner of the force application device 200 from the above embodiment is that a damping element 230 is used to replace the spring element 220; at this time, one end of the damping element 230 is pivotally connected to the door member 100, and the other end of the damping element 230 is pivotally connected to the plate member 211.

[0139] In a preferred embodiment, one end of the damping element 230 is connected to the door member 100 through a ball joint, and the other end of the damping element 230 is also connected to the vehicle body 300 through a ball joint; thus, through the arrangement of the damping element 230, the speed of the door member 100 during the opening process will be reduced, making the opening process of the door member 100 easier to control. In addition, during the closing process of the door member 100, due to the arrangement of the damping element 230, a driving device 400 with a greater driving force is required; at this time, according to the damping effect of the damping element 230, a driving device 400 with an appropriate power can be selected.

[0140] According to another aspect of the present disclosure, a vehicle is provided, which includes the tailgate system of the above vehicle.

[0141] In the description of this specification, the description with reference to terms such as "one embodiment / way", "some embodiments / ways", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment / way or example are included in at least one embodiment / way or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment / way or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments / ways or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments / ways or examples described in this specification and the features of different embodiments / ways or examples.

[0142] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0143] Those skilled in the art should understand that the above embodiments are only for clearly explaining the present disclosure and are not intended to limit the scope of the present disclosure. For those skilled in the art, other changes or modifications can be made on the basis of the above disclosure, and these changes or modifications are still within the scope of the present disclosure.

Claims

1. A driving device, characterized in that, Comprising: A driving element for providing driving force; A transmission assembly for receiving the driving force provided by the driving element, and the transmission assembly has a rotation axis; A nut provided on the transmission assembly and driven by the transmission assembly to rotate; A lead screw that cooperates with the nut so that when the nut is driven and rotated by the transmission assembly, the lead screw can move axially relative to the nut; Wherein, the nut has at least two swing axes relative to the transmission assembly; so that the angle between the axis of the lead screw and the rotation axis of the transmission assembly can change.

2. The drive device according to claim 1, characterized in that The transmission assembly includes: A worm connected to the driving element to receive the driving force provided by the driving element; and A worm gear that is in transmission connection with the worm to drive the worm gear to rotate through the rotation of the worm.

3. The drive device according to claim 2, characterized in that, An upper support frame and a lower support frame are provided inside the worm gear, wherein both the upper support frame and the lower support frame are in transmission connection with the worm gear.

4. The drive device according to claim 3, characterized in that An upper bearing is provided on the upper support frame; a lower bearing is provided on the lower support frame.

5. The drive device according to claim 3, characterized in that A spherical groove is formed inside the upper support frame; a spherical groove is formed inside the lower support frame, and at least part of the outer surface of the nut is formed as a spherical surface, so that the nut forms a spherical fit with the upper support frame and the lower support frame.

6. The drive device according to claim 5, characterized in that, A pin structure is provided on the nut, an upper receiving groove is formed on the upper support frame, and at least part of the pin structure is located in the upper receiving groove.

7. The drive device according to claim 6, characterized in that The width of the upper receiving groove is greater than the diameter of the pin structure; the height of the upper receiving groove is greater than the diameter of the receiving groove.

8. A tailgate system, characterized in that, Including the driving device according to any one of claims 1-7.

9. The tailgate system according to claim 8, characterized in that, Further comprising: A door component pivotally connected to the vehicle body, wherein the pivot axis of the door component relative to the vehicle body is arranged substantially horizontally, and when the door component is in the closed position, the center of gravity of the door component is located above the pivot axis; wherein, the driving device is arranged on the door component and connected to the vehicle body; Optionally, further comprising: A force applying device connected to the door component and the vehicle body, wherein the force applying device is configured to: when the door component is in the opening process, the force applying device applies a resistance to the door component; Optionally, when the door component is in the closed position, the force applying device applies a first pulling force to the door component, and the first pulling force can hinder the opening movement of the door component; when the door component is in the closed position, the force applying device applies a second pulling force to the door component, and the second pulling force is used to actuate the closing movement of the door component; wherein, the first pulling force is less than the second pulling force; Optionally, the force applying device includes: A spring element, one end of the spring element is connected to the door component, and the other end of the spring element is connected to the vehicle body through a link structure; Optionally, the link structure includes: A plate component rotatably arranged on the door component; wherein, the spring element is connected to the plate component and can apply a pulling force to the plate component; A rod member, one end of the rod member is rotatably connected to a plate member, and the other end of the rod member is rotatably connected to a door member; Wherein, the plate member is arranged such that: during the process of the door member moving from the closed position to the open position, as the plate member rotates, the spring element is stretched; Optionally, the force applying device includes: A damping element, one end of the damping element is pivotally connected to the door member, the other end of the damping element is pivotally connected to a link structure, and is connected to the vehicle body through the link structure; Optionally, the link structure includes: A plate member, the plate member is rotatably arranged on the door member; wherein, the damping element is pivotally connected to the plate member; A rod member, one end of the rod member is rotatably connected to the plate member, and the other end of the rod member is rotatably connected to the door member; Wherein, the plate member is arranged such that: during the process of the door member moving from the closed position to the open position, as the plate member rotates, the damping element provides damping; Optionally, a support frame is provided on the door member, and the plate member is rotatably arranged on the support frame; Optionally, the plate member includes three corners, one corner of the plate member is rotatably arranged on the support frame; another corner of the plate member is connected to the spring element or the damping element; the third corner of the plate member is rotatably connected to the rod member; Optionally, one end of the rod member is connected to the plate member through a ball joint; the other end of the rod member is connected to the door member through a ball joint.

10. A vehicle, characterized in that, Including the driving device according to any one of claims 1-7, or including the tailgate system according to claim 8 or 9.

Images