Connecting rod assembly and vehicle

Abstract

The utility model provides a connecting rod assembly and a vehicle. The vehicle comprises a connecting rod assembly, the connecting rod assembly comprises a first connecting rod, a second connecting rod and a third connecting rod, one end of the first connecting rod is rotationally connected to a vehicle door through a first hinge point, and the other end is rotationally connected to a frame through a second hinge point; one end of the second connecting rod is rotatably connected to the door through a third hinge point, and the other end is rotatably connected to the frame through a fourth hinge point; one end of the third connecting rod is rotationally connected to the vehicle door through a fifth hinge point, and the other end is rotationally connected to the frame through a sixth hinge point; wherein the first hinge point, the third hinge point and the fifth hinge point are arranged on the vehicle door in a non-overlapping mode, and the second hinge point, the fourth hinge point and the sixth hinge point are arranged on the vehicle frame in a non-overlapping mode. The technical problem that the transmission process of a vehicle door of an existing vehicle is unstable is solved.

Description

Technical Field

[0001] The present application relates to the technical field of automobiles, and in particular, to a connecting rod assembly and a vehicle. Background Art

[0002] With the development of the economy and the progress of technology, automobiles have become an indispensable means of transportation for people, and automobile door lock devices have become increasingly mature. With the rapid and diversified development of automobiles in various countries today, customers have put forward higher requirements for the functional diversification and reliability of vehicle door locks.

[0003] In the prior art, a connecting rod mechanism is provided between a vehicle door and a vehicle frame to open or close the vehicle door. The connection of the connecting rod mechanism is unstable. When the joint between the vehicle door and the vehicle frame side is not combined, it is difficult for the vehicle door to move smoothly along a fixed trajectory and posture under the condition of being subjected to a large external force. Summary of the Utility Model

[0004] The embodiments of the present application provide a connecting rod assembly and a vehicle. The present utility model aims to solve the technical problem of unstable transmission of the vehicle door in the prior art.

[0005] To achieve the above object, according to the first aspect of the present application, there is provided a vehicle, including a vehicle door, a vehicle frame, and a connecting rod assembly. The connecting rod assembly is connected between the vehicle door and the vehicle frame. The connecting rod assembly includes:

[0006] A first connecting rod, one end of the first connecting rod is rotatably connected to the vehicle door through a first hinge point, and the other end of the first connecting rod is rotatably connected to the vehicle frame through a second hinge point;

[0007] A second connecting rod, one end of the second connecting rod is rotatably connected to the vehicle door through a third hinge point, and the other end of the second connecting rod is rotatably connected to the vehicle frame through a fourth hinge point; and,

[0008] A third connecting rod, one end of the third connecting rod is rotatably connected to the vehicle door through a fifth hinge point, and the other end of the third connecting rod is rotatably connected to the vehicle frame through a sixth hinge point;

[0009] Wherein, the first hinge point, the third hinge point, and the fifth hinge point are not coincidentally arranged on the vehicle door, and the second hinge point, the fourth hinge point, and the sixth hinge point are not coincidentally arranged on the vehicle frame.

[0010] Optionally, the vehicle door has an open state and a closed state;

[0011] A first virtual connection line is formed between the third hinge point and the fourth hinge point, a second virtual connection line is formed between the first hinge point and the third hinge point, the included angle between the first virtual connection line and the second virtual connection line is α, a third virtual connection line is formed between the first hinge point and the fifth hinge point, a fourth virtual connection line is formed between the fifth hinge point and the sixth hinge point, the included angle between the third virtual connection line and the fourth virtual connection line is β. When the link assembly is in at least one of the open state or the closed state, one of α and β is located in the angle range A, and A is [45°, 90°].

[0012] Optionally, when the link assembly is at any position between the open state and the closed state, one of α and β is located in the angle range A, and A is [45°, 90°].

[0013] Optionally, when the vehicle door is in the open state, α is greater than β; and / or,

[0014] When the vehicle door is in the closed state, α is less than β.

[0015] Optionally, a first triangle is virtually enclosed among the first hinge point, the third hinge point and the fifth hinge point;

[0016] A second triangle is virtually enclosed among the second hinge point, the fourth hinge point and the sixth hinge point.

[0017] Optionally, a drive mechanism is further included, and the drive mechanism is drivingly connected to the first link to drive the first link to drive the vehicle door to rotate relative to the vehicle frame so that the vehicle door is in the open state or the closed state.

[0018] Optionally, the projection of the first link on the first horizontal plane is located between the projection of the second link on the first horizontal plane and the projection of the third link on the first horizontal plane.

[0019] Optionally, a first connecting member is further included. The first connecting member is disposed on the vehicle door. The first connecting member has a first side surface and a second side surface which are oppositely arranged. One end of the third link close to the vehicle door is hinged to the first side surface, and one end of the second link close to the vehicle door is hinged to the second side surface; and / or,

[0020] The vehicle further includes a second connecting member. The second connecting member is disposed on the vehicle frame. One end of the third link close to the vehicle frame and one end of the second link close to the vehicle frame are respectively hinged to the same side of the second connecting member, and there is a height difference between one end of the third link close to the vehicle frame and one end of the second link close to the vehicle frame.

[0021] Optionally, the first link includes a first section and a second section connected thereto. The first section is rotatably connected to the vehicle door through the first hinge point, and the second section is rotatably connected to the vehicle frame through the second hinge point. The second section is bent relative to the first section;

[0022] The second link includes a third section and a fourth section connected thereto. The third section is rotatably connected to the vehicle door through a third hinge point, and the fourth section is rotatably connected to the vehicle frame through a fourth hinge point. The fourth section is bent relative to the third section;

[0023] The third link includes a fifth section and a sixth section connected thereto. The fifth section is rotatably connected to the vehicle door through a fifth hinge point, and the sixth section is rotatably connected to the vehicle frame through a sixth hinge point. The sixth section is bent relative to the fifth section.

[0024] Optionally, the stiffness of the first link is greater than the stiffness of the second link; and / or,

[0025] the stiffness of the first link is greater than the stiffness of the third link.

[0026] According to a second aspect of the present application, a link assembly for a vehicle is provided. The vehicle includes a vehicle door and a vehicle frame. The link assembly is connected between the vehicle door and the vehicle frame, and the link assembly is the link assembly in the above-mentioned vehicle.

[0027] In the vehicle provided by the present application, the vehicle door is connected to the vehicle frame through a link assembly, and the structural stability is relatively high. Specifically, the first hinge point, the third hinge point, and the fifth hinge point are not coincident on the vehicle door, and the second hinge point, the fourth hinge point, and the sixth hinge point are not coincident on the vehicle frame, so that the first link, the second link, and the third link cooperate with the vehicle door and the vehicle frame to form a plurality of four-bar linkages. During the opening or closing process of the vehicle door, the plurality of four-bar linkages cooperate with each other to stabilize the movement trajectory of the vehicle door, thereby improving the stability during the transmission of the vehicle door.

[0028] Other features and advantages of the present application will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative efforts.

[0030] To more fully understand the present application and its beneficial effects, the following description will be made in conjunction with the accompanying drawings, where the same reference numerals in the following description denote the same parts.

[0031] Figure 1 is a schematic structural view of an embodiment of a connecting rod assembly provided by the present application;

[0032] Figure 2 is Figure 1 a schematic structural view of the first connecting rod in

[0033] Figure 3 is Figure 1 a schematic structural view of the second and third connecting rods in

[0034] Figure 4 is a schematic structural view of the door provided by the present application in the closed state;

[0035] Figure 5 is a schematic structural view of the door provided by the present application in the open state;

[0036] Figure 6 is Figure 4 a schematic diagram of the structure of

[0037] Figure 7 is Figure 5 a schematic diagram of the structure of

[0038] Description of reference numerals:

[0039] 100, connecting rod assembly; 200, door; 300, vehicle frame;

[0040] 1, first connecting rod; 11, first hinge point; 12, second hinge point;

[0041] 2, second connecting rod; 21, third hinge point; 22, fourth hinge point;

[0042] 3, third connecting rod; 31, fifth hinge point; 32, sixth hinge point;

[0043] 41, first door fixing seat; 42, second door fixing seat; 43, third door fixing seat; 44, first mounting plate;

[0044] 51, first vehicle frame fixing seat; 52, second vehicle frame fixing seat; 53, third vehicle frame fixing seat; 54, second mounting plate; 55, third mounting plate;

[0045] 6, driving mechanism;

[0046] 71, first door lock mechanism; 711, first lock ring; 712, first lock engaging portion; 72, second door lock mechanism; 721, second lock ring; 722, second lock engaging portion. Detailed implementation manners

[0047] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0048] In the prior art, a link mechanism is provided between a vehicle door and a vehicle frame to open or close the vehicle door. The connection of the link mechanism is unstable, and it is difficult for the vehicle door to move smoothly along a fixed trajectory and posture under the condition that the vehicle door is subjected to a large external force.

[0049] Embodiment 1

[0050] In view of this, the present application provides a vehicle. Figures 1 to 7 It is a schematic structural diagram of an embodiment of the vehicle provided by the present application. The link assembly will be described in detail below with reference to the main drawings.

[0051] Please refer to Figure 1 , according to the first aspect of the present application, the present application provides a vehicle. The vehicle includes a vehicle door 200, a vehicle frame 300, and a link assembly 100. The link assembly 100 is connected between the vehicle door 200 and the vehicle frame 300. The link assembly 100 includes a first link 1, a second link 2, and a third link 3. One end of the first link 1 is rotatably connected to the vehicle door 200 through a first hinge point 11, and the other end of the first link 1 is rotatably connected to the vehicle frame 300 through a second hinge point 12. One end of the second link 2 is rotatably connected to the vehicle door 200 through a third hinge point 21, and the other end of the second link 2 is rotatably connected to the vehicle frame 300 through a fourth hinge point 22. One end of the third link 3 is rotatably connected to the vehicle door 200 through a fifth hinge point 31, and the other end of the third link 3 is rotatably connected to the vehicle frame 300 through a sixth hinge point 32. Among them, the first hinge point 11, the third hinge point 21, and the fifth hinge point 31 are not coincidentally arranged on the vehicle door 200, and the second hinge point 12, the fourth hinge point 22, and the sixth hinge point 32 are not coincidentally arranged on the vehicle frame 300.

[0052] The vehicle provided by the present application has a door 200 connected to a vehicle frame 300 through a link assembly 100, with relatively high structural stability. Specifically, the first hinge point 11, the third hinge point 21, and the fifth hinge point 31 are not coincident on the door 200, and the second hinge point 12, the fourth hinge point 22, and the sixth hinge point 32 are not coincident on the vehicle frame 300, such that the first link 1, the second link 2, and the third link 3 cooperate with the door 200 and the vehicle frame 300 to form a plurality of four-bar linkages. During the opening or closing process of the door 200, the plurality of four-bar linkages cooperate with each other to stabilize the movement trajectory of the door 200, prevent the door 200 from shifting, and thereby improve the movement stability of the door 200. In the open or closed state of the door 200, the stability during the transmission of the door 200 is improved.

[0053] For the sake of description, taking Figure 1 the first direction in [a certain context] as an example, the first direction is the direction from the vehicle bottom to the vehicle top, the second direction is the direction from the vehicle rear to the vehicle front, and the third direction is the direction from the vehicle frame 300 to the door 200. The first direction intersects both the second direction and the third direction. Taking a coordinate system as an example, the first direction is the Z-axis, the second direction is the X-axis, and the third direction is the Y-axis. Among them, the X-axis and the Y-axis enclose a first horizontal plane, the X-axis and the Z-axis enclose a second horizontal plane, and the Y-axis and the Z-axis enclose a third horizontal plane.

[0054] In some embodiments, the door 200 has an open state and a closed state, and the link assembly 100 is used to drive the door 200 from the open state to the closed state, or from the closed state to the open state.

[0055] To ensure the stability of transmission, a plurality of four-bar linkages are formed among the first link 1, the second link 2, the third link 3, the door 200, and the vehicle frame 300. For example, a four-bar linkage is formed among the first link 1, the second link 2, the door 200, and the vehicle frame 300; a four-bar linkage is formed among the first link 1, the third link 3, the door 200, and the vehicle frame 300; a four-bar linkage is formed among the second link 2, the third link 3, the door 200, and the vehicle frame 300. The plurality of four-bar linkages cooperate with each other to stabilize the movement trajectory of the door 200, prevent the door 200 from shifting, ensure that the door 200 is aligned with the vehicle frame 300, and thereby improve the movement stability of the door 200.

[0056] It should be noted that during the transmission process, the angle formed between the first link 1, the second link 2 and the third link 3 and the door 200 or the frame 300 has a great influence on the transmission stability of the door 200, and the angle varies between the interval [0°, 90°]. The larger the angle, the smaller the elastic deformation and shaking of the door 200 under the influence of external force, and the more stable the transmission of the door 200. When the angle is smaller, the door 200 is more easily affected by external force, the greater the shaking of the door 200, the movement trajectory of the door 200 cannot be determined, and the transmission of the door 200 is more unstable.

[0057] In this embodiment, a first virtual line is formed between the third hinge point 21 and the fourth hinge point 22, a second virtual line is formed between the first hinge point 11 and the third hinge point 21, and the angle between the first virtual line and the second virtual line is α. A third virtual line is formed between the first hinge point 11 and the fifth hinge point 31, a fourth virtual line is formed between the fifth hinge point 31 and the sixth hinge point 32, and the angle between the third virtual line and the fourth virtual line is β. When the connecting rod assembly 100 is in one of the open state and the closed state, one of α and β is located in the angle range A, and A is [45°, 90°].

[0058] More specifically, when the connecting rod assembly 100 is in the open state (i.e., the vehicle door 200 and the vehicle frame 300 are separated), α is located in the angle range A, and β is a smaller angle. By α being located in a larger angle range, the stability of the vehicle door 200 is provided. In the closed state (i.e., the vehicle door 200 and the vehicle frame 300 are matched), β is located in the angle range A, α is a smaller angle, and β is a larger angle, thereby improving the stability of the vehicle door 200. At the same time, when the vehicle door 200 is in the closed state, due to the connection effect of the connecting rod assembly 100, β is maintained in a larger angle range, so that the vehicle door 200 can always be maintained in a stable state, and during the movement of the vehicle, the vehicle door 200 will not shake or produce abnormal noise.

[0059] In some embodiments, when the link assembly 100 is in any position between the open state and the closed state, one of α and β is located in the angle interval A, and A is [45°, 90°]. During the transmission process of the vehicle door 200, in a plurality of parallel four-bar linkages formed between the first link 1, the second link 2, the third link 3, the vehicle door 200 and the vehicle frame 300, as long as one of the angles (α or β) exists at one or more larger angles, the motion stability of the vehicle door 200 can be improved. More specifically, when the vehicle door is in a semi-open state or a semi-closed state, one of α and β is also located in the angle interval A, thereby ensuring the stability of the vehicle door 200. For example, when in the semi-open state, α is located in the angle interval A, and when in the semi-closed state, β is located in the angle interval A.

[0060] Specifically, when the vehicle door 200 is in the open state, α is greater than β, and 45° ≤ α ≤ 90°. When the vehicle door 200 is in the closed state, α is less than β, and 45° ≤ β ≤ 90°. In this way, during the movement of the vehicle door 200, at least one of the values of α and β is maintained in the larger angular range [45°, 90°], maintaining a high transmission stability.

[0061] In some embodiments, a first triangle is virtually enclosed among the first hinge point 11, the third hinge point 21, and the fifth hinge point 31; please refer to Figure 6 , the projection of the first hinge point 11 on the first horizontal plane is located between the projections of the third hinge point 21 and the fifth hinge point 31, and the projection of the first hinge point 11 on the first horizontal plane is located above the projections of the third hinge point 21 and the fifth hinge point 31, and a first triangle is virtually enclosed among the first hinge point 11, the third hinge point 21, and the fifth hinge point 31. The projection of the second hinge point 12 on the first horizontal plane is located between the projections of the fourth hinge point 22 and the sixth hinge point 32 on the first horizontal plane, and the projection of the second hinge point 12 on the first horizontal plane is located above the projections of the fourth hinge point 22 and the sixth hinge point 32 on the first horizontal plane, and a second triangle is virtually enclosed among the second hinge point 12, the fourth hinge point 22, and the sixth hinge point 32. With such a setting, the space is reasonably utilized, and at the same time, it can be ensured that at least one of the values of α and β is maintained in the larger angular range [45°, 90°], maintaining a high transmission stability.

[0062] In some embodiments, the link assembly 100 further includes a driving mechanism 6, and the driving mechanism 6 is used to drive the first link 1, the second link 2, or the third link 3 to move, thereby driving the vehicle door 200 to move. It should be noted that the specific position of the driving mechanism 6 is not limited and can be selected according to the actual situation. The driving mechanism 6 is arranged on the vehicle body, and the driving mechanism 6 can be selected to drive and connect any one of the first link 1, the second link 2, or the third link 3. In one embodiment, the driving mechanism 6 drives and connects the first link 1, and the first link 1 serves as the driving link, and the second link 2 and the third link 3 serve as the driven links. In another embodiment, the driving mechanism 6 drives and connects the second link 2, and the second link 2 serves as the driving link, and the first link 1 and the third link 3 serve as the driven links. In yet another embodiment, the driving mechanism 6 drives and connects the third link 3, and the third link 3 serves as the driving link, and the first link 1 and the second link 2 serve as the driven links.

[0063] Further, for the convenience of description, in this application, taking the driving mechanism 6 driving and connecting the first link 1 as an example, the connection relationship and driving relationship between the link assembly 100, the vehicle door 200, and the vehicle frame 300 are explained.

[0064] Specifically, in the following embodiments, the driving mechanism 6 drives the first link 1 to move, the first link 1 drives the vehicle door 200 to move, and the vehicle door 200 drives the second link 2 and the third link 3 to move. During the movement, the first link 1 is the driving rod, driving the vehicle door 200 to move and bearing most of the external forces. The second link 2 and the third link 3 are the driven rods, bearing a small part of the external forces and maintaining the movement track of the vehicle door 200, thereby improving the movement stability of the vehicle door 200.

[0065] Further, in this embodiment, the first link 1 is the driving rod, and the second link 2 and the third link 3 are the driven rods. Please refer to Figure 4 and Figure 6 , a parallelogram link mechanism is formed among the first link 1, the second link 2, the vehicle door 200 and the vehicle frame 300. The first link 1 is the driving rod, and the second link 2 is the driven member. At this time, the angle α in the parallelogram link mechanism formed among the first link 1, the second link 2, the vehicle door 200 and the vehicle frame 300 is small, and the stability of maintaining the movement of the vehicle door 200 is very low, and the anti-interference ability is poor, and finally the movement track may not be unique. At this time, another parallelogram link mechanism is formed by the third link 3, the first link 1, the vehicle door 200 and the vehicle frame 300. The first link 1 is the driving rod, and the third link 3 is the driven rod. In the parallelogram link mechanism formed by the third link 3, the first link 1, the vehicle door 200 and the vehicle frame 300, the angle β is large, which can maintain the movement stability of the vehicle door 200, improve the anti-interference ability of the vehicle door 200, and ensure the uniqueness of the movement track of the vehicle door 200.

[0066] Please refer to Figure 5 and Figure 7 , when the vehicle door 200 moves from the closed state to the open state, the second link 2 and the third link 3 move along with the vehicle door 200. At this time, β gradually decreases, and the decrease of β leads to the reduction of the stability of the vehicle door 200, the reduction of the anti-interference ability of the vehicle door 200, and the possible change of the movement track of the vehicle door 200. At this time, α gradually increases, improving the stability of the vehicle door 200, thereby improving the anti-interference ability of the vehicle door 200 and ensuring the uniqueness of the movement track of the vehicle door 200.

[0067] In some embodiments, the projection of the first link 1 on the first horizontal plane is located between the projection of the second link 2 on the first horizontal plane and the projection of the third link 3 on the first horizontal plane. Please refer to Figure 6 and Figure 7, the first link 1 is used as the driving link, and the second link 2 and the third link 3 are used as the driven links. In the horizontal plane, the projection of the first hinge point 11 is arranged between the projections of the third hinge point 21 and the fifth hinge point 31. Correspondingly, the projection of the second hinge point 12 is arranged between the projections of the fourth hinge point 22 and the sixth hinge point 32. The fourth hinge point 22 is closer to the front end of the vehicle door 200 relative to the second hinge point 12, and the sixth segment is farther from the front end of the vehicle door 200 relative to the second hinge point 12. With such an arrangement, the space is reasonably utilized and the structure is more compact.

[0068] In this embodiment, a first parallelogram link mechanism is formed among the first link 1, the second link 2, the vehicle door 200, and the vehicle frame 300. A second parallelogram link mechanism is formed among the first link 1, the third link 3, the vehicle door 200, and the vehicle frame 300. A third parallelogram link mechanism is formed among the second link 2, the third link 3, the vehicle door 200, and the vehicle frame 300. Multiple parallelogram link mechanisms are connected between the vehicle door 200 and the vehicle frame 300 to drive the vehicle door 200 to move along a fixed trajectory, thereby maintaining the stability of the movement of the vehicle door 200 and enabling the vehicle door 200 and the vehicle frame 300 to be aligned.

[0069] In this embodiment, rotating pairs are respectively provided at the first hinge point 11, the second hinge point 12, the third hinge point 21, the fourth hinge point 22, the fifth hinge point 31, and the sixth hinge point 32. The first link 1, the second link 2, and the third link 3 are rotatably connected to the vehicle door 200 or the vehicle frame 300 through the rotating pairs.

[0070] Please refer to Figure 1 , Figure 2 and Figure 3 , in some embodiments, the link assembly 100 further includes a first vehicle door fixing seat 41 and a first connecting member. The first connecting member includes a second vehicle door fixing seat 42 and a third vehicle door fixing seat 43. The first hinge point 11 of the first link 1 is hinged to the first vehicle door fixing seat 41 through a rotating pair. The third hinge point 21 of the second link 2 is hinged to the second vehicle door fixing seat 42 through a rotating pair. The fifth hinge point 31 of the third link 3 is hinged to the third vehicle door fixing seat 43 through a rotating pair. In the first direction, the third vehicle door fixing seat 43 is arranged between the first vehicle door fixing seat 41 and the second vehicle door fixing seat 42. In the second direction, the second vehicle door fixing seat 42 is arranged on one side of the third vehicle door fixing seat 43. In the third direction, the second vehicle door fixing seat 42 is arranged on one side of the third vehicle door fixing seat 43. With such an arrangement, the space utilization rate is improved, and at the same time, interference will not occur between the first vehicle door fixing seat 41, the second vehicle door fixing seat 42, and the third vehicle door fixing seat 43.

[0071] It should be noted that during the actual installation process, there is a certain offset distance between the second door fixing seat 42 and the third door fixing seat 43. Such a setting is to avoid other components on the door 200 and prevent interference with other components. In one embodiment, the second door fixing seat 42 and the third door fixing seat 43 are separately provided, which is convenient for processing and installation. In another embodiment, in order to improve the installation accuracy and reduce unnecessary position adjustment steps, the second door fixing seat 42 and the third door fixing seat 43 are integrally formed. More specifically, the first connecting member further includes a first mounting plate 44 having a first side and a second side oppositely arranged in the third direction. The second door fixing seat 42 and the third door fixing seat 43 are respectively fixed to the first side and the second side of the first mounting plate 44. In this way, the installation accuracy can be improved and the position debugging steps can be reduced. With such a setting, it can also be ensured that the second door fixing seat 42 and the third door fixing seat 43 do not interfere with other components on the door 200.

[0072] Please refer to Figure 1 、 Figure 2 and Figure 3 , the link assembly 100 further includes a first vehicle frame fixing seat 51 and a second connecting member. The second connecting member includes a second vehicle frame fixing seat 52 and a third vehicle frame fixing seat 53. The second hinge point 12 of the first link 1 is hinged to the first vehicle frame fixing seat 51 through a revolute pair. The fourth hinge point 22 of the second link 2 is hinged to the second vehicle frame fixing seat 52 through a revolute pair. The sixth hinge point 32 of the third link 3 is hinged to the third vehicle frame fixing seat 53 through a revolute pair. More specifically, in the first direction, the first vehicle frame fixing seat 51 is located between the second vehicle frame fixing seat 52 and the third vehicle frame fixing seat 53. In the second direction, the third vehicle frame fixing seat 53 is located between the first vehicle frame fixing seat 51 and the second vehicle frame fixing seat 52. In the third direction, the second vehicle frame fixing seat 52 and the third vehicle frame fixing seat 53 are located on the same side of the first vehicle frame 300. With such a setting, the space utilization rate is improved, and the first vehicle frame fixing seat 51, the second vehicle frame fixing seat 52, and the third vehicle frame fixing seat 53 do not interfere with other components on the vehicle frame 300.

[0073] In some embodiments, to improve the installation accuracy and reduce redundant position adjustment steps, the second vehicle frame fixing seat 52 and the third vehicle frame fixing seat 53 are integrally formed. More specifically, the link assembly 100 further includes a second base, and the second base has a second mounting plate 54 and a third mounting plate 55. In the third direction, the second mounting plate 54 is closer to the vehicle door 200 than the third mounting plate 55, that is, in the third direction, the height of the second mounting plate 54 is higher than that of the third mounting plate 55. The second vehicle frame fixing seat 52 is provided on the second mounting plate 54, and the third vehicle frame fixing seat 53 is mounted on the third mounting plate 55. In this way, not only can the installation accuracy be improved and the position debugging steps be reduced, but also the second vehicle door fixing seat 42 and the third vehicle door fixing seat 43 will not interfere with other components on the vehicle frame 300.

[0074] In some embodiments, the first link 1, the second link 2, and the third link 3 are connected between the vehicle door 200 and the vehicle frame 300. The first link 1 is the driving link. During the rotation of the first link 1 around the first hinge point 11, in addition to bearing the forces for driving the vehicle door 200 in the second and third directions as the main support arm, the first link 1 also needs to bear the weight of the vehicle door 200 in the first direction. The second link 2 and the third link 3 are the driven links and only need to bear the balancing forces for driving the vehicle door 200 in the second and third directions. Therefore, the force borne by the first link 1 is greater than the forces borne by the second link 2 and the third link 3 respectively. To meet the force requirement of the first link 1, the stiffness of the first link 1 needs to be greater, and the stiffness of the second link 2 and the third link 3 can be smaller. Specifically, in some embodiments, the width of the first link 1 is greater than the width of the second link 2, and the width of the first link 1 is greater than the width of the third link 3. In another embodiment, the thickness of the first link 1 is greater than the thickness of the second link 2, and the thickness of the first link 1 is greater than the thickness of the third link 3. In still another embodiment, the first link 1, the second link 2, and the third link 3 have the same dimensions, the material of the first link 1 is stainless steel, and the materials of the second link 2 and the third link 3 are copper. With such a setting, not only can the force requirement of the first link 1 be met, but also the space utilization rate can be improved.

[0075] Please refer to Figure 1, the first link 1 includes a first section and a second section. One end of the first section away from the second section is rotatably connected to the vehicle door 200 through a first hinge point 11, and one end of the second section away from the first section is rotatably connected to the vehicle frame 300 through a second hinge point 12. The first section is bent relative to the second section. The second link 2 includes a third section and a fourth section. One end of the third section away from the fourth section is rotatably connected to the vehicle door 200 through a third hinge point 21, and one end of the fourth section away from the third section is rotatably connected to the vehicle frame 300 through a fourth hinge point 22. The third section is bent relative to the fourth section. The third link 3 includes a fifth section and a sixth section. One end of the fifth section away from the sixth section is rotatably connected to the vehicle door 200 through a fifth hinge point 31, and one end of the sixth section away from the fifth section is rotatably connected to the vehicle frame 300 through a sixth hinge point 32. The fifth section is bent relative to the sixth section. It should be noted that the bending directions of the first link 1, the second link 2, and the third link 3 are not limited as long as they do not interfere with other components on the vehicle door 200 and the vehicle frame 300. In this embodiment, the second section is bent toward the vehicle door 200, the fourth section is bent toward the vehicle frame 300, and the sixth section is bent toward the vehicle frame 300. With such an arrangement, there is no interference between the first link 1, the second link 2, and the third link 3, and the space utilization rate is relatively high. Moreover, bending the first link 1, the second link 2, and the third link 3 can better conduct the torque.

[0076] In this embodiment, please refer to Figure 4 and Figure 5 , the link assembly 100 further includes a door lock mechanism for fixing the vehicle door 200 and the vehicle frame 300. The number of door lock mechanisms is not limited and can be selected according to the actual situation. In some embodiments, in order to ensure the stability of the connection between the vehicle door 200 and the vehicle frame 300, there are two door lock mechanisms, namely a first door lock mechanism 71 and a second door lock mechanism 72. The first door lock mechanism 71 includes a first lock ring 711 and a first lock engaging portion 712. The first lock ring 711 is provided on the vehicle frame 300, and the first lock engaging portion 712 is provided on the vehicle door 200. The second door lock mechanism 72 includes a second lock ring 721 and a second lock engaging portion 722. The second lock ring 721 is provided on the vehicle door 200, and the second lock engaging portion 722 is provided on the vehicle frame 300. Please refer to 4 and Figure 5, a first door lock mechanism 71 and a second door lock mechanism 72 are respectively provided at the front and rear ends of the vehicle frame 300. During the process of the door 200 being driven by the first link 1, the first lock engagement portion 712 moves along the trajectory G1, and the second lock engagement portion 722 moves along the trajectory G2. More specifically, when the door 200 is in the closed state, the first lock engagement portion 712 and the first lock ring 711 are fixed, the second lock engagement portion 722 and the second lock ring 721 are fixed, and the door 200 is fixed to the vehicle frame 300. When the door 200 starts to move, the first lock engagement portion 712 and the first lock ring 711 are separated, the second lock engagement portion 722 and the second lock ring 721 are separated, the first lock engagement portion 712 moves along the trajectory G1 with the door 200, and the second lock engagement portion 722 moves along the trajectory G2 with the door 200.

[0077] In one embodiment, the drive mechanism 6 includes a drive motor and a link assembly. The link assembly is connected between the drive motor and the first link 1. The drive motor drives the link assembly to move, and the link assembly drives the first link 1 to move, thereby driving the door 200 to move. The specific structure and connection manner of the link assembly can refer to the conventional settings in the art and will not be elaborated here one by one. In another embodiment, the drive mechanism 6 includes a drive motor and a gear assembly. The gear assembly is connected between the drive motor and the first link 1. The drive motor drives the gear assembly to move, and the gear assembly drives the first link 1 to move, thereby driving the door 200 to move. The specific structure and connection manner of the gear assembly can refer to the conventional settings in the art and will not be elaborated here one by one.

[0078] In some embodiments, the vehicle can be a fuel vehicle, a plug-in hybrid vehicle, a new energy vehicle, etc., and the present application does not make specific limitations thereto.

[0079] Embodiment 2

[0080] The present application provides a link assembly 100. The link assembly 100 is applied to a vehicle, and the vehicle includes a door 200 and a vehicle frame 300. The link assembly 100 is connected between the door 200 and the vehicle frame 300. The link assembly 100 includes a first link 1, a second link 2, and a third link 3. One end of the first link 1 is rotatably connected to the door 200 through a first hinge point 11, and the other end of the first link 1 is rotatably connected to the vehicle frame 300 through a second hinge point 12. One end of the second link 2 is rotatably connected to the door 200 through a third hinge point 21, and the other end of the second link 2 is rotatably connected to the vehicle frame 300 through a fourth hinge point 22. One end of the third link 3 is rotatably connected to the door 200 through a fifth hinge point 31, and the other end of the third link 3 is rotatably connected to the vehicle frame 300 through a sixth hinge point 32. Among them, the first hinge point 11, the third hinge point 21, and the fifth hinge point 31 are not coincidentally arranged on the door 200, and the second hinge point 12, the fourth hinge point 22, and the sixth hinge point 32 are not coincidentally arranged on the vehicle frame 300.

[0081] The connecting rod assembly 100 provided by the present application occupies a small space and has relatively high structural stability. Specifically, the first hinge point 11, the third hinge point 21, and the fifth hinge point 31 are not coincidentally arranged on the vehicle door 200, and the second hinge point 12, the fourth hinge point 22, and the sixth hinge point 32 are not coincidentally arranged on the vehicle frame 300, so that the first connecting rod 1, the second connecting rod 2, and the third connecting rod 3 cooperate with the vehicle door 200 and the vehicle frame 300 to form a plurality of four-bar linkages. During the opening or closing process of the vehicle door 200, the plurality of four-bar linkages cooperate with each other to stabilize the movement track of the vehicle door 200, prevent the vehicle door 200 from shifting, ensure that the vehicle door 200 is aligned with the vehicle frame 300, and thus improve the movement stability of the vehicle door 200.

[0082] For the specific structure of the connecting rod assembly 100, reference may be made to Embodiment 1, and details are not described herein one by one.

[0083] In the description of the present application, the terms "first" and "second" are only used for descriptive purposes and cannot be construed 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 one or more features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically defined.

[0084] In the above embodiments, the descriptions of the respective embodiments have their own emphases. For the parts not detailed in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

[0085] Among the embodiments, implementation manners, and related technical features of the present application, they can be combined and replaced with each other without conflict.

[0086] The above are only the preferred embodiments of the present application and do not impose any form of limitation on the present application. However, any simple modification, equivalent change, and modification 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 still fall within the scope of the technical solution of the present application.

Claims

1. A vehicle, characterized in that: The vehicle comprises a vehicle door, a vehicle frame and a connecting rod assembly, wherein the connecting rod assembly is connected between the vehicle door and the vehicle frame, and the connecting rod assembly comprises: A first connecting rod, one end of which is rotatably connected to the vehicle door via a first hinge point, and the other end of which is rotatably connected to the vehicle frame via a second hinge point; a second connecting rod, one end of which is rotatably connected to the vehicle door via a third hinge point, and the other end of which is rotatably connected to the vehicle frame via a fourth hinge point; and a third connecting rod, one end of which is rotatably connected to the vehicle door via a fifth hinge point, and the other end of which is rotatably connected to the vehicle frame via a sixth hinge point; Among them, the first hinge point, the third hinge point and the fifth hinge point are not arranged overlappingly on the vehicle door, and the second hinge point, the fourth hinge point and the sixth hinge point are not arranged overlappingly on the vehicle frame.

2. The vehicle according to claim 1, characterized in that The vehicle door has an open state and a closed state; A first virtual line is formed between the third hinge point and the fourth hinge point, a second virtual line is formed between the first hinge point and the third hinge point, an angle α is formed between the first virtual line and the second virtual line, a third virtual line is formed between the first hinge point and the fifth hinge point, a fourth virtual line is formed between the fifth hinge point and the sixth hinge point, an angle β is formed between the third virtual line and the fourth virtual line, and when the connecting rod assembly is in at least one of the open state and the closed state, one of α and β is located in the angle interval A, and A is [45°, 90°].

3. The vehicle according to claim 2, characterized in that When the connecting rod assembly is in any position between the open state and the closed state, one of α and β is located in an angle interval A, and A is [45°, 90°].

4. The vehicle according to claim 2, characterized in that When the vehicle door is in the open state, α is greater than β; and / or, When the vehicle door is in the closed state, α is smaller than β.

5. The vehicle according to any one of claims 1 to 4, characterized in that: A first triangle is virtually enclosed between the first hinge point, the third hinge point and the fifth hinge point; The second hinge point, the fourth hinge point and the sixth hinge point virtually enclose a second triangle.

6. The vehicle according to claim 5, characterized in that It also includes a driving mechanism, which is drivingly connected to the first connecting rod to drive the first connecting rod to drive the vehicle door to rotate relative to the vehicle frame, so that the vehicle door is in the open state or the closed state.

7. The vehicle according to claim 6, characterized in that The projection of the first link on the first horizontal plane is located between the projection of the second link on the first horizontal plane and the projection of the third link on the first horizontal plane.

8. The vehicle according to claim 5, characterized in that The vehicle door further comprises a first connecting member, the first connecting member is arranged on the vehicle door, the first connecting member has a first side surface and a second side surface arranged opposite to each other, an end of the third connecting rod close to the vehicle door is hinged to the first side surface, and an end of the second connecting rod close to the vehicle door is hinged to the second side surface; and / or, The vehicle also includes a second connecting member, which is arranged on the frame, and an end of the third connecting rod close to the frame and an end of the second connecting rod close to the frame are respectively connected on the same side of the second connecting member, and there is a height difference between an end of the third connecting rod close to the frame and an end of the second connecting rod close to the frame.

9. The vehicle according to claim 5, characterized in that The first connecting rod includes a first section and a second section that are connected, the first section is rotatably connected to the vehicle door via the first hinge point, the second section is rotatably connected to the vehicle frame via the second hinge point, and the second section is bent relative to the first section; and / or, The second connecting rod includes a third section and a fourth section connected, the third section is rotatably connected to the vehicle door via the third hinge point, the fourth section is rotatably connected to the vehicle frame via the fourth hinge point, and the fourth section is bent relative to the third section; and / or, The third connecting rod includes a fifth section and a sixth section which are connected. The fifth section is rotatably connected to the vehicle door via the fifth hinge point, and the sixth section is rotatably connected to the vehicle frame via the sixth hinge point. The sixth section is bent relative to the fifth section.

10. The vehicle according to claim 5, characterized in that The stiffness of the first connecting rod is greater than the stiffness of the second connecting rod; and / or, The stiffness of the first link is greater than the stiffness of the third link.

11. A connecting rod assembly, characterized in that: Used in a vehicle, the vehicle comprises a door and a frame, the connecting rod assembly is connected between the door and the frame, and the connecting rod assembly is the connecting rod assembly in the vehicle according to any one of claims 1 to 10.

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