Automobile and Door Connection Device

Abstract

The present invention relates to an automobile and a door connection device. The door connection device includes: a first mounting base, a ball pin pair, a first rotating member, a second rotating member, a driving member and a frame assembly. The first mounting base is used for being mounted on a vehicle body. The ball pin pair is movably mounted on the first mounting base. One end of the driving member is rotatably connected to the first mounting base through the first rotating member, and the other end of the driving member is rotatably connected to the frame assembly through the second rotating member. The frame assembly is used for being mounted and cooperating with a door, and the frame assembly is connected and cooperated with the ball pin pair. The intersection point of the rotation center axis of the first rotating member and the rotation center axis of the second rotating member converges at the center of the ball of the ball pin pair.

Description

Technical Field

[0001] The present invention relates to the technical field of automobiles, in particular to automobiles and door connection devices. Background Art

[0002] After the automobile stops, the side door of the automobile is opened. The traditional way to open the side door of the automobile is often to open it outwards from the vehicle body. Therefore, when the vehicle performs the door opening operation in a narrow area, due to the large door opening space required by the traditional side door of the automobile, the side door of the automobile is likely to cause damage to pedestrians on the road or the side door itself. Therefore, traditional automobiles use scissor doors to solve the problem of the large door opening space of the side door of the automobile. However, the scissor doors on traditional automobiles are not smooth during operation, so that the use effect of the scissor doors is poor. Summary of the Invention

[0003] Based on this, in view of the problem that the use effect of traditional scissor doors is not smooth, it is necessary to provide an automobile and a door connection device.

[0004] A door connection device. The door connection device includes: a first mounting base, a ball pin pair, a first rotating member, a second rotating member, a driving member and a frame assembly. The first mounting base is used to be mounted on the vehicle body. The ball pin pair is movably mounted on the first mounting base. One end of the driving member is rotatably connected to the first mounting base through the first rotating member, and the other end of the driving member is rotatably connected to the frame assembly through the second rotating member. The frame assembly is used to be mounted and cooperate with the door, and the frame assembly is connected and cooperated with the ball pin pair. The intersection of the rotation center axes of the first rotating member and the second rotating member converges at the center of the ball of the ball pin pair.

[0005] An automobile includes the door connection device as described above, and further includes a vehicle body main body and a door. The door connection device is mounted on the vehicle body main body, and the door connection device is mounted and cooperated with the door.

[0006] In one embodiment, the door connection device further includes a ball pin seat. The ball pin pair includes a spherical pair and a positioning pin. The ball pin seat is mounted on the first mounting base. The spherical pair is movably mounted in the ball pin seat. A limiting hole is provided on the surface of the ball pin seat for limiting and cooperating with the positioning pin. The positioning pin is mounted on the spherical pair, and one end of the positioning pin is mounted and cooperated with the frame assembly.

[0007] In one embodiment, the ball pin seat includes a first ball pin sub-seat and a second ball pin sub-seat. The first ball pin sub-seat is provided with a first hemispherical cavity, and the second ball pin sub-seat is provided with a second hemispherical cavity. Both the first ball pin sub-seat and the second ball pin sub-seat are installed on the first mounting base. The first ball pin sub-seat and the second ball pin sub-seat are spliced in alignment. The first hemispherical cavity and the second hemispherical cavity cooperate to form a spherical cavity for the movement of the spherical pair. The first limiting sub-hole and the second limiting sub-hole cooperate to form a limiting hole for limiting cooperation with the positioning pin.

[0008] In one embodiment, the door connection device further includes a plurality of fixing members. The first ball pin sub-seat is provided with a plurality of first fixing holes for installation and cooperation with the fixing members, and the second ball pin sub-seat is provided with a plurality of second fixing holes for installation and cooperation with the fixing members. The plurality of first fixing holes and the plurality of second fixing holes are both arranged at intervals along the circumferential direction of the spherical cavity.

[0009] In one embodiment, when the first ball pin sub-seat and the second ball pin sub-seat are spliced in alignment, the surface of the first ball pin sub-seat facing away from the first mounting base and the surface of the second ball pin sub-seat facing away from the first mounting sub-seat are arranged at an angle.

[0010] In one embodiment, the frame assembly includes a frame rod and a second mounting base. The frame rod is installed and cooperated with the second mounting base. The second mounting base is used for connecting and fixing with the door. The frame rod is installed and cooperated with the positioning pin. One end of the driving member is rotationally cooperated with the frame rod through the second rotating member.

[0011] In one embodiment, the door connection device further includes a first rotating seat and a second rotating seat. The first rotating seat and the second rotating seat are arranged at intervals. The first rotating member is located between the first rotating seat and the second rotating seat. One end of the first rotating member is installed and cooperated with the first rotating seat, and the other end of the first rotating member is installed and cooperated with the second rotating seat.

[0012] In one embodiment, the frame assembly further includes a third rotating seat and a fourth rotating seat. The third rotating seat and the fourth rotating seat are installed on the frame rod at intervals. One end of the third rotating seat is installed and cooperated with the second mounting base. The second rotating member is located between the third rotating seat and the fourth rotating seat. One end of the second rotating member is installed and cooperated with the third rotating seat, and the other end of the second rotating member is installed and cooperated with the fourth rotating seat.

[0013] In one embodiment, a first sleeve rotatably engaged with the first rotating member is provided at the first end of the active member, a first abutting member is provided on the first rotating seat or the second rotating seat, a second abutting member is provided on the first sleeve, the second abutting member is configured to abut against the first abutting member, and a second sleeve rotatably engaged with the second rotating member is provided at the other end of the active member.

[0014] When installing the above-mentioned door connection device, first determine the installation position of the first mounting base on the vehicle body according to the installation requirements of the vehicle body and the supporting door. Then, the ball pin pair is movably installed on the first mounting base. At the same time, according to the movement range of the ball pin pair, determine the installation position of the first rotating member on the first mounting base, and then rotatably engage one end of the active member with the first mounting base through the first rotating member. After the frame assembly is installed and engaged with the ball pin pair, the frame assembly can move correspondingly with the ball pin pair. According to the movement range of the ball pin pair and the movement range of the frame assembly with the ball pin pair, determine the installation position of the second rotating member on the frame assembly, and the other end of the active member is rotatably connected to the frame assembly through the second rotating member. At this time, ensure that the intersection of the rotation center axis of the first rotating member and the rotation center axis of the second rotating member converges at the center of the ball of the ball pin pair. The above-mentioned implementation manner can realize the movement of the frame assembly in three-dimensional space. When the door needs to be opened, the door can obtain a corresponding flipping movement amount while lifting through the above-mentioned door connection device, so that the opening and closing operation of the door is more smooth.

[0015] When assembling the above-mentioned vehicle, the door connection device is installed on the vehicle body main body, and the door is connected to the vehicle body main body through the door connection device. The door connection device movably installs the ball pin pair on the first mounting base. At the same time, according to the movement range of the ball pin pair, determine the installation position of the first rotating member on the first mounting base, and then rotatably engage one end of the active member with the first mounting base through the first rotating member. After the frame assembly is installed and engaged with the ball pin pair, the frame assembly can move correspondingly with the ball pin pair. According to the movement range of the ball pin pair and the movement range of the frame assembly with the ball pin pair, determine the installation position of the second rotating member on the frame assembly, and the other end of the active member is rotatably connected to the frame assembly through the second rotating member. At this time, ensure that the intersection of the rotation center axis of the first rotating member and the rotation center axis of the second rotating member converges at the center of the ball of the ball pin pair. The above-mentioned implementation manner can realize the movement of the frame assembly in three-dimensional space. When the door needs to be opened, the door can obtain a corresponding flipping movement amount while lifting through the above-mentioned door connection device, so that the opening and closing operation of the door is more smooth. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of the door connection device shown in one perspective;

[0017] Figure 2 It is a schematic structural diagram of the door connection device shown from another perspective;

[0018] Figure 3 It is a schematic partial exploded view of the door connection device;

[0019] Figure 4 It is a schematic exploded view of the ball pin seat.

[0020] 100. First mounting base, 110. First rotating seat, 120. Second rotating seat, 130. First abutting member, 200. Ball pin pair, 210. Spherical pair, 220. Positioning pin, 300. First rotating member, 400. Second rotating member, 500. Driving member, 510. First sleeve, 511. Second abutting member, 520. Second sleeve, 600. Frame assembly, 610. Frame rod, 620. Second mounting base, 630. Third rotating seat, 640. Fourth rotating seat, 700. Ball pin seat, 701. Spherical cavity, 710. First ball pin sub-seat, 711. First hemispherical cavity, 720. Second ball pin sub-seat, 721. Second hemispherical cavity, 730. Fixing member, 740. Limiting hole, 741. First limiting sub-hole, 742. Second limiting sub-hole. Detailed implementation manners

[0021] To make the above objects, features, and advantages of the present invention more apparent and understandable, the following will describe the detailed implementation manners of the present invention in conjunction with the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0022] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0024] In the present invention, unless otherwise clearly defined and limited, terms such as "mounted", "connected", "coupled", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] In the present invention, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0026] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it may be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0027] Combined with Figures 1 to 3As shown, in one embodiment, the door connection device includes: a first mounting base 100, a ball pin pair 200, a first rotating member 300, a second rotating member 400, a driving member 500, and a frame assembly 600. The first mounting base 100 is configured to be mounted on the vehicle body. The ball pin pair 200 is movably mounted on the first mounting base 100. One end of the driving member 500 is rotatably connected to the first mounting base 100 through the first rotating member 300, and the other end of the driving member 500 is rotatably connected to the frame assembly 600 through the second rotating member 400. The frame assembly 600 is configured to be mounted and cooperate with the door, and the frame assembly 600 is connected and cooperated with the ball pin pair 200. The intersection point of the rotation center axis of the first rotating member 300 and the rotation center axis of the second rotating member 400 converges at the center of the ball of the ball pin pair 200.

[0028] When installing the above door connection device, first determine the installation position of the first mounting base 100 on the vehicle body according to the installation requirements of the vehicle body and the supporting door. Then, movably mount the ball pin pair 200 on the first mounting base 100. At the same time, according to the movement range of the ball pin pair 200, determine the installation position of the first rotating member 300 on the first mounting base 100, and then realize the rotational cooperation between one end of the driving member 500 and the first mounting base 100 through the first rotating member 300. After the frame assembly 600 is mounted and cooperated with the ball pin pair 200, the frame assembly 600 can move correspondingly with the ball pin pair 200. According to the movement range of the ball pin pair 200 and the movement range of the frame assembly 600 with the ball pin pair 200, determine the installation position of the second rotating member 400 on the frame assembly 600, and the other end of the driving member 500 is rotatably connected to the frame assembly 600 through the second rotating member 400. At this time, ensure that the intersection point of the rotation center axis of the first rotating member 300 and the rotation center axis of the second rotating member 400 converges at the center of the ball of the ball pin pair 200. The above implementation manner can realize the movement of the frame assembly 600 in three-dimensional space. When the door needs to be opened, the door can obtain a corresponding flipping movement amount while lifting through the above door connection device, so that the opening and closing operation of the door is more smooth.

[0029] In one embodiment, the first rotating member 300 and the second rotating member 400 are rotating shafts or rotating sleeves.

[0030] Combined with Figures 1 to 4As shown, in one embodiment, the door connection device further includes a ball pin seat 700. The ball pin pair 200 includes a spherical pair 210 and a positioning pin 220. The ball pin seat 700 is installed on the first mounting base 100. The spherical pair 210 is movably installed in the ball pin seat 700. The positioning pin 220 is installed on the spherical pair 210. A limiting hole 740 is provided on the surface of the ball pin seat 700 for limiting cooperation with the positioning pin 220. One end of the positioning pin 220 is installed and cooperated with the frame assembly 600. Specifically, the positioning pin 220 is a connecting sleeve or a connecting rod. The ball pin seat 700 is installed on the first mounting base 100. At this time, the ball pin seat 700 can be detachably fixed to the first mounting base 100 by means of clamping or threaded connection. Further, the spherical pair 210 is installed through the ball pin seat 700, so that the moving effect of the spherical pair 210 on the door connection device can be effectively guaranteed. At the same time, on the one hand, the frame body can be more conveniently driven correspondingly with the spherical pair 210 through the positioning pin 220; on the other hand, through the limiting cooperation between the limiting hole 740 and the positioning pin 220, the ball pin pair 200 can move within a preset range.

[0031] Combined Figures 1 to 4 As shown, in one embodiment, the ball pin seat 700 includes a first ball pin sub-seat 710 and a second ball pin sub-seat 720. A first hemispherical cavity 711 and a first limiting sub-hole 741 are provided on the first ball pin sub-seat 710. The second ball pin sub-seat 720 is provided with a second hemispherical cavity 721 and a second limiting sub-hole 742. Both the first ball pin sub-seat 710 and the second ball pin sub-seat 720 are installed on the first mounting base 100. The first ball pin sub-seat 710 and the second ball pin sub-seat 720 are spliced in alignment. The first hemispherical cavity 711 and the second hemispherical cavity 721 cooperate to form a spherical cavity for the spherical pair 210 to move. The first limiting sub-hole 741 and the second limiting sub-hole 742 cooperate to form a limiting hole 740 for limiting cooperation with the positioning pin 220. Specifically, by separating the ball pin seat 700 into a first ball pin sub-seat 710 and a second ball pin sub-seat 720, and at the same time opening a first hemispherical cavity 711 on the first ball pin sub-seat 710 and a second hemispherical cavity 721 on the second ball pin seat 700. When the spherical pair 210 needs to be installed on the ball pin seat 700, for example: first install the first ball pin sub-seat 710 on the first mounting base 100, then place the spherical pair 210 into the first hemispherical cavity 711 for preliminary fixation, and then install the second ball pin sub-seat 720 on the first mounting base 100, while ensuring that the first ball pin seat 700 and the second ball pin seat 700 can be spliced in alignment. At this time, the installation of the spherical pair 210 in the spherical cavity is realized. The above-mentioned implementation method is convenient for the loading and unloading of the spherical pair 210 on the ball pin seat 700.

[0032] As shown in combination with Figures 1 to 4 In one embodiment, the door connection device further includes a plurality of fixing members 730. The first ball pin sub-seat 710 is provided with a plurality of first fixing holes for mounting and cooperating with the fixing members 730, and the second ball pin sub-seat 720 is provided with a plurality of second fixing holes for mounting and cooperating with the fixing members 730. The plurality of first fixing holes and the plurality of second fixing holes are both arranged at intervals along the circumferential direction of the ball cavity. Specifically, the fixing member 730 is a limit bolt or a limit pin. At the same time, a first fixing hole adapted to the fixing member 730 is opened on the first ball pin sub-seat 710, and a second fixing hole adapted to the fixing member 730 is opened on the second ball pin sub-seat 720. After the first ball pin sub-seat 710 and the second ball pin sub-seat 720 are both installed on the first mounting base 100, the fixing member 730 passes through the first fixing hole and the second fixing hole to further fix the first ball pin sub-seat 710 and the second ball pin sub-seat 720. Further, the first fixing hole and the second fixing hole are both arranged at intervals along the circumferential direction of the ball cavity, so as to effectively avoid the fixing member 730 from obstructing the ball cavity when passing through the first fixing hole and the second fixing hole.

[0033] In one embodiment, when the first ball pin sub-seat 710 and the second ball pin sub-seat 720 are butted and spliced, a surface of the first ball pin sub-seat 710 facing away from the first mounting base 100 and a surface of the second ball pin sub-seat 720 facing away from the first mounting sub-seat are arranged at an angle. Specifically, this above-mentioned implementation manner can determine the installation inclination angle of the spherical pair 210 relative to the ball pin seat 700 according to actual installation needs, so as to ensure that the movement range of the spherical pair 210 is adapted to the movement range of the door. Further, by arranging a surface of the first ball pin sub-seat 710 facing away from the first mounting base 100 and a surface of the second ball pin sub-seat 720 facing away from the first mounting sub-seat at an angle. The ball pin seat 700 forms a triangular support structure, so as to effectively ensure the structural stability of the ball pin seat 700 itself.

[0034] As shown in combination with Figure 1 and Figure 2As shown, in one embodiment, the frame assembly 600 includes a frame rod 610 and a second mounting base 620. The frame rod 610 is mounted and cooperated with the second mounting base 620. The second mounting base 620 is used to be fixedly connected to the vehicle door. The frame rod 610 is mounted and cooperated with the positioning pin 220. One end of the driving member 500 is rotationally cooperated with the frame rod 610 through the second rotating member 400. Specifically, the frame rod 610 and the second mounting base 620 can be spliced or integrally formed. Compared with directly connecting the frame rod 610 to the vehicle door, in this embodiment, the second mounting base 620 can increase the contact area between the frame rod 610 and the vehicle door, thereby helping to improve the fixing effect between the frame assembly 600 and the vehicle door. Further, the frame rod 610 can be adaptively adjusted according to the installation situation of the vehicle body and the vehicle door. For example, the frame rod 610 can be a bent rod or a rod with an irregular shape, etc.

[0035] Combined with Figure 1 and Figure 2 As shown, in one embodiment, the vehicle door connecting device further includes a first rotating seat 110 and a second rotating seat 120. The first rotating seat 110 and the second rotating seat 120 are arranged at intervals. The first rotating member 300 is located between the first rotating seat 110 and the second rotating seat 120. One end of the first rotating member 300 is mounted and cooperated with the first rotating seat 110, and the other end of the first rotating member 300 is mounted and cooperated with the second rotating seat 120. Specifically, the interval distance between the first rotating seat 110 and the second rotating seat 120 on the first mounting base 100 is determined according to the length of the first rotating member 300. At the same time, by fixing the first rotating member 300 through the first rotating seat 110 and the second rotating seat 120, the installation effect of the first rotating member 300 can be effectively ensured. According to the installation needs or rotation requirements, both ends of the first rotating member 300 are respectively fixed to the first rotating seat 110 and the second rotating seat 120, or both ends of the first rotating member 300 are respectively movably connected to the first rotating seat 110 and the second rotating seat 120.

[0036] Combined with Figure 1 and Figure 2As shown, in one embodiment, the frame assembly 600 further includes a third rotating seat 630 and a fourth rotating seat 640. The third rotating seat 630 and the fourth rotating seat 640 are spaced apart and installed on the frame rod 610. One end of the third rotating seat 630 is installed and fitted with the second mounting base 620. The second rotating member 400 is located between the third rotating seat 630 and the fourth rotating seat 640. One end of the second rotating member 400 is installed and fitted with the third rotating seat 630, and the other end of the second rotating member 400 is installed and fitted with the fourth rotating seat 640. Specifically, the third rotating seat 630 and the fourth rotating seat 640 can be integrally formed or spliced with the frame rod 610. Through the third rotating seat 630 and the fourth rotating seat 640, the installation of the second rotating member 400 on the frame rod 610 can be made more convenient. At the same time, one end of the third rotating seat 630 is connected and fixed to the second mounting base 620. This implementation mode on the one hand ensures the installation stability of the third mounting base on the frame assembly 600, and on the other hand also improves the installation stability of the second mounting base 620 and the frame rod 610.

[0037] Combined with Figure 1 and Figure 2 As shown, in one embodiment, a first sleeve 510 that is rotationally fitted with the first rotating member 300 is provided at the first end of the driving member 500. A first abutting member 130 is provided on the first rotating seat 110 or the second rotating seat 120. A second abutting member 511 is provided on the first sleeve 510. The second abutting member 511 is used to abut against the first abutting member 130. A second sleeve 520 that is rotationally fitted with the second rotating member 400 is provided at the other end of the driving member 500. Specifically, the driving member 500 is a driving rod or a driving shaft. Through the first sleeve 510, the sleeving contact effect between the driving member 500 and the first rotating member 300 can be effectively ensured. Through the second sleeve 520, the sleeving contact effect between the driving member 500 and the second rotating member 400 can be effectively ensured. Further, the first abutting member 130 and the second abutting member 511 are limiting blocks or limiting protrusions. Through the abutting cooperation between the first abutting member 130 and the second abutting member 511, it can be ensured that the door connection device rotates within a preset rotation range.

[0038] In one embodiment, an automobile includes the door connection device as described above, and further includes a vehicle body main body and a door. The door connection device is installed on the vehicle body main body, and the door connection device is installed and fitted with the door.

[0039] When the above-mentioned vehicle is assembled, the door connecting device is installed on the vehicle body main body, and the door is connected to the vehicle body main body through the door connecting device. The door connecting device movably installs the ball pin pair 200 on the first mounting base 100. At the same time, according to the movement range of the ball pin pair 200, the installation position of the first rotating member 300 on the first mounting base 100 is determined, and then one end of the driving member 500 is rotationally matched with the first mounting base 100 through the first rotating member 300. After the frame assembly 600 is installed and matched with the ball pin pair 200, the frame assembly 600 can move correspondingly with the ball pin pair 200. According to the movement range of the ball pin pair 200 and the movement range of the frame assembly 600 following the ball pin pair 200, the installation position of the second rotating member 400 on the frame assembly 600 is determined, and the other end of the driving member 500 is rotationally connected to the frame assembly 600 through the second rotating member 400. At this time, it is ensured that the intersection point of the rotation center axis of the first rotating member 300 and the rotation center axis of the second rotating member 400 converges at the ball center of the ball pin pair 200. The above-mentioned implementation manner can realize the movement of the frame assembly 600 in three-dimensional space. When the door needs to be opened, the door can obtain a corresponding flipping movement amount while lifting through the above-mentioned door connecting device, so that the opening and closing operation of the door is more smooth.

[0040] The technical features of the above-mentioned embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0041] The above-mentioned embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the appended claims.

Claims

1. A door connection device, characterized in that, The door connection device includes: a first mounting base, a ball pin pair, a first rotating member, a second rotating member, a driving member and a frame assembly. The first mounting base is used to be installed on the vehicle body. The ball pin pair is movably installed on the first mounting base. One end of the driving member is rotatably connected to the first mounting base through the first rotating member, and the other end of the driving member is rotatably connected to the frame assembly through the second rotating member. The frame assembly is used to be installed and cooperated with the door, and the frame assembly is connected and cooperated with the ball pin pair. The intersection of the rotation center axis of the first rotating member and the rotation center axis of the second rotating member converges at the center of the ball of the ball pin pair; The first rotating member and the second rotating member are a rotating shaft or a rotating sleeve.

2. The door connection device according to claim 1, characterized in that, The door connection device further includes a ball pin seat. The ball pin pair includes a spherical pair and a positioning pin. The ball pin seat is installed on the first mounting base. The spherical pair is movably installed in the ball pin seat. A limiting hole is provided on the surface of the ball pin seat for limiting cooperation with the positioning pin. The positioning pin is installed on the spherical pair, and one end of the positioning pin passes through the limiting hole to be installed and cooperated with the frame assembly.

3. The door connection device according to claim 2, characterized in that, The ball pin seat includes a first ball pin sub-seat and a second ball pin sub-seat. The first ball pin sub-seat is provided with a first hemispherical cavity and a first limiting sub-hole. The second ball pin sub-seat is provided with a second hemispherical cavity and a second limiting sub-hole. Both the first ball pin sub-seat and the second ball pin sub-seat are installed on the first mounting base. The first ball pin sub-seat and the second ball pin sub-seat are spliced in alignment. The first hemispherical cavity and the second hemispherical cavity cooperate to form a spherical cavity for the spherical pair to move. The first limiting sub-hole and the second limiting sub-hole cooperate to form a limiting hole for limiting cooperation with the positioning pin.

4. The door connection device according to claim 3, characterized in that, The door connection device further includes a plurality of fixing members. The first ball pin sub-seat is provided with a plurality of first fixing holes for installing and cooperating with the fixing members. The second ball pin sub-seat is provided with a plurality of second fixing holes for installing and cooperating with the fixing members. And the plurality of first fixing holes and the plurality of second fixing holes are all arranged at intervals along the circumference of the spherical cavity.

5. The door connection device according to claim 4, characterized in that When the first ball pin sub-seat and the second ball pin sub-seat are spliced in alignment, the surface of the first ball pin sub-seat facing away from the first mounting base and the surface of the second ball pin sub-seat facing away from the first mounting base are arranged at an angle.

6. The door connection device according to claim 2, characterized in that, The frame assembly includes a frame rod and a second mounting base. The frame rod is installed and cooperated with the second mounting base. The second mounting base is used to be connected and fixed to the door. The frame rod is installed and cooperated with the positioning pin. One end of the driving member is rotatably cooperated with the frame rod through the second rotating member.

7. The door connection device according to claim 6, characterized in that, The door connection device further includes a first rotating seat and a second rotating seat. The first rotating seat and the second rotating seat are arranged at intervals. The first rotating member is located between the first rotating seat and the second rotating seat. One end of the first rotating member is installed and cooperated with the first rotating seat, and the other end of the first rotating member is installed and cooperated with the second rotating seat.

8. The door connection device according to claim 7, characterized in that The frame assembly further includes a third rotating seat and a fourth rotating seat. The third rotating seat and the fourth rotating seat are spaced apart and installed on the frame rod. One end of the third rotating seat is installed and cooperated with the second mounting base. The second rotating member is located between the third rotating seat and the fourth rotating seat. One end of the second rotating member is installed and cooperated with the third rotating seat, and the other end of the second rotating member is installed and cooperated with the fourth rotating seat.

9. The door connection device according to claim 8, characterized in that, A first sleeve for rotationally cooperating with the first rotating member is provided at the first end of the driving member. A first abutting member is provided on the first rotating seat or the second rotating seat. A second abutting member is provided on the first sleeve. The second abutting member is used for abutting against the first abutting member. A second sleeve for rotationally cooperating with the second rotating member is provided at the other end of the driving member.

10. A vehicle, characterized in that, The door connection device according to any one of claims 1 to 9 further includes a vehicle body and a door. The door connection device is installed on the vehicle body and is installed and cooperated with the door.

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