Vehicle door opening / closing driving device and vehicle

Abstract

A vehicle door opening / closing driving device, comprising a mounting base (100), a swing arm (200), a connecting shaft (300) and a power mechanism (400). A first connecting end (210) of the swing arm (200) is rotatably mounted on the mounting base (100); a second connecting end of the swing arm (200) is configured to be connected to a vehicle door; the power mechanism (400) is mounted on the mounting base (100); and an output end of the power mechanism (400) is connected to the first connecting end (210) by means of the connecting shaft (300) and is used for driving the swing arm (200) to rotate. Also provided is a vehicle comprising the vehicle door opening / closing driving device. The vehicle door opening / closing driving device can solve the problem of insufficient smoothness of the transmission force in vehicle door opening / closing driving devices.

Description

A vehicle door opening and closing driving device and a vehicle

[0001] The present application claims priority to the Chinese patent application No. 202411127605.7, filed on August 16, 2024, and entitled "A vehicle door opening and closing driving device and a vehicle", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the technical field of vehicles, in particular to a vehicle door opening and closing driving device and a vehicle. BACKGROUND

[0003] With the gradual improvement of user requirements for vehicle use experience, the intelligence level of vehicles is continuously improved, and the automation level of vehicle door opening and closing has an important influence on user experience.

[0004] In the related art, in order to make the opening and closing of the vehicle door more intelligent and convenient, the vehicle usually has a vehicle door opening and closing driving device, which drives the opening and closing of the vehicle door, frees the user's hands, and improves the user's use experience. SUMMARY

[0005] The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.

[0006] The vehicle door opening and closing driving device in the related art usually includes a power mechanism and a transmission mechanism, and the transmission mechanism is usually a belt mechanism or a pull wire. Such transmission mechanism makes the transmission force of the vehicle door opening and closing driving device not smooth enough, resulting in phenomena such as jerk or virtual position during the opening and closing of the vehicle door.

[0007] The present application provides a vehicle door opening and closing driving device and a vehicle. The following introduces each aspect related to the embodiments of the present application.

[0008] In a first aspect, the present application provides a vehicle door opening and closing driving device, comprising: a mounting base; a swing arm, a first connecting end of the swing arm being rotatably mounted to the mounting base, and a second connecting end of the swing arm being used for connecting a vehicle door; a power mechanism, the power mechanism being mounted to the mounting base, an output end of the power mechanism being connected to the first connecting end through a connecting shaft, and the power mechanism being used for driving the swing arm to rotate.

[0009] Optionally, the connecting shaft is provided with an assembly hole, at least part of the output end of the power mechanism extends into the assembly hole and is connected to the assembly hole, and the output end of the power mechanism can drive the connecting shaft to rotate synchronously; the first connecting end is provided with a mounting hole, at least part of the connecting shaft is located in the mounting hole and is fixedly connected to the mounting hole, and the connecting shaft can drive the first connecting end to rotate synchronously to drive the swing arm to rotate synchronously.

[0010] Optionally, the first connecting end and the mounting base are in position-limiting cooperation in the direction of the rotation axis of the first connecting end; and / or, the first connecting end and the mounting base are in position-limiting cooperation in a plane perpendicular to the rotation axis of the first connecting end.

[0011] Optionally, the mounting base is provided with a mounting space, the first connecting end is located in the mounting space, the mounting space has two opposite first side walls, the two first side walls are each provided with a through hole, the two ends of the connecting shaft extend out of the first connecting end and respectively extend into the through holes of the two first side walls, and wherein: in the direction of the rotation axis of the first connecting end, the two opposite axial end faces of the first connecting end are respectively in position-limiting contact with the two first side walls, so that the first connecting end and the mounting base are in position-limiting cooperation in the direction of the rotation axis of the first connecting end; and / or, in a plane perpendicular to the rotation axis of the first connecting end, the two ends of the connecting shaft are respectively in position-limiting contact with the inner walls of the through holes of the two first side walls, so that the first connecting end and the mounting base are in position-limiting cooperation in a plane perpendicular to the rotation axis of the first connecting end.

[0012] Optionally, the door opening and closing drive device further comprises a gasket, the two ends of the connecting shaft located outside the first connecting end are each sleeved with a gasket, and the gaskets sleeved on the two ends of the connecting shaft are respectively located between the corresponding first side wall and the axial end face of the first connecting end; in the direction of the rotation axis of the first connecting end, the two opposite axial end faces of the first connecting end are respectively in position-limiting contact with the two first side walls through the gaskets.

[0013] Optionally, the door opening and closing drive device comprises a shaft sleeve, the two ends of the connecting shaft located outside the first connecting end are each sleeved with a shaft sleeve, and the shaft sleeve comprises a first limiting sleeve, the first limiting sleeves located at the two ends of the connecting shaft are respectively located between the inner wall of the corresponding through hole and the outer wall of the connecting shaft, and in a plane perpendicular to the rotation axis of the first connecting end, the two ends of the connecting shaft are respectively in position-limiting contact with the inner walls of the through holes of the two first side walls through the corresponding first limiting sleeves.

[0014] Optionally, the shaft sleeve further comprises a second limiting sleeve, the second limiting sleeve and the first limiting sleeve are distributed in the direction of the rotation axis of the first connecting end, the second limiting sleeves located at the two ends of the connecting shaft are respectively located between the corresponding first side wall and the axial end face of the first connecting end; in the direction of the rotation axis of the first connecting end, the two opposite axial end faces of the first connecting end are respectively in position-limiting contact with the two first side walls through the second limiting sleeves.

[0015] Optionally, among the gaskets and the second limiting sleeves, the gaskets abut against the axial end faces of the first connecting end, the second limiting sleeves abut against the first side walls, the surface roughness of the gaskets is less than the surface roughness of the first connecting end, and the surface roughness of the shaft sleeve is less than the surface roughness of the connecting shaft.

[0016] Optionally, the two ends of the connecting shaft protrude out of the mounting hole along the direction of the rotation axis of the first connecting end, and the part of the connecting shaft inside the mounting hole is in interference fit with the mounting hole; the first shaft shoulder and the second shaft shoulder are distributed on the connecting shaft along the direction of the rotation axis of the first connecting end, and the two shaft end faces of the first connecting end are in abutment with the first shaft shoulder and the second shaft shoulder respectively.

[0017] Optionally, the connecting shaft comprises a shaft body, and the shaft body comprises a first shaft segment and a second shaft segment along the direction of the rotation axis of the first connecting end, the diameter of the first shaft segment is greater than the diameter of the second shaft segment, so that the first shaft segment and the second shaft segment cooperate to form the first shaft shoulder; the connecting shaft further comprises a sleeve, the sleeve is detachably sleeved outside the second shaft segment, so that the sleeve and the second shaft segment cooperate to form the second shaft shoulder.

[0018] Optionally, the power mechanism comprises a motor and a speed reducer connected in transmission, the output shaft of the speed reducer forms the output end of the power mechanism, and the output shaft of the speed reducer is in spline connection with the assembly hole of the connecting shaft, so that the two synchronously rotate; the spline of the output shaft of the speed reducer and the spline of the connecting shaft are made of SWRCH35K or 35CrMnSiA.

[0019] Optionally, the power mechanism comprises a mounting base plate connected with the mounting base, and one of the mounting base and the mounting base plate is provided with a limiting protrusion, and the other is provided with a limiting recess, the limiting protrusion extends into the limiting recess and is in limiting fit around the axis direction of the output end of the power mechanism.

[0020] In the second aspect, the application provides a vehicle comprising a door and the door opening and closing driving device in any one of the above aspects, the door is connected with the second connecting end of the swing arm, and the power mechanism can drive the door to move through the swing arm to drive the door to open or close.

[0021] In the embodiment of the application, the power mechanism is connected with the swing arm through the connecting shaft, and the swing arm is used for connecting the door, that is, the power mechanism transmits power to the door through the connecting shaft and the swing arm in sequence to drive the door to open and close, and the connecting shaft and the swing arm are both hard materials that are not easy to deform, so that the transmission cooperation between the components in the transmission process is stable, the normal work of the components is ensured, the transmission force of the door opening and closing driving device in the embodiment of the application can be stably and continuously output to the door, and the problems such as jerk and virtual position in the process of opening and closing the door are alleviated. As can be seen, the embodiment of the application can solve the problem that the transmission force of the door opening and closing driving device in the related art is not stable enough.

[0022] Other aspects can be apparent after reading and understanding the accompanying drawings and detailed description. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related art, the following will briefly introduce the drawings needed to be used in the embodiments or the related art description. Obviously, the drawings in the following description only are a part of the present application, and all other drawings obtained by those of ordinary skill in the art based on the present application without any creative effort are within the scope of the present application.

[0024] Fig. 1 is a structural schematic diagram of a vehicle door opening and closing driving device provided by an embodiment of the present application;

[0025] Fig. 2 is a front view of Fig. 1;

[0026] Fig. 3 is a sectional view in A-A direction of Fig. 2;

[0027] Fig. 4 is a sectional view in B-B direction of Fig. 2.

[0028] In Figs. 1-4: 100, mounting base; 110, mounting space; 111, first side wall; 200, swing arm; 210, first connecting end; 300, connecting shaft; 310, shaft body; 311, first shaft section; 312, second shaft section; 320, sleeve; 400, power mechanism; 410, motor; 420, speed reducer; 421, output shaft; 430, mounting base plate; 431, limiting protrusion; 440, worm gear mechanism; 500, gasket; 600, shaft sleeve; 610, first limiting sleeve; 620, second limiting sleeve; 700, threaded connecting piece. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the 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 of ordinary skill in the art based on the embodiments of the present application are within the scope of the present application.

[0030] As shown in Figs. 1-4, an embodiment of the present application provides a vehicle door opening and closing driving device for a vehicle. The vehicle door opening and closing driving device provided by the embodiment of the present application comprises a mounting base 100, a swing arm 200, a connecting shaft 300 and a power mechanism 400.

[0031] The first connecting end 210 of the swing arm 200 is rotatably installed on the mounting base 100, a second connecting end (not shown in the figure) of the swing arm 200 is used for connecting the vehicle door, the power mechanism 400 is installed on the mounting base 100, and an output end of the power mechanism 400 is connected with the first connecting end 210 through the connecting shaft 300, so as to drive the swing arm 200 to rotate. Optionally, the connecting shaft 300 can be a pin shaft. In the case of using the vehicle door opening and closing driving device in the embodiment of the present application for a vehicle, the power mechanism 400 drives the swing arm 200 to rotate, which can drive the vehicle door to move, so as to realize the opening or closing of the vehicle door.

[0032] Optionally, the mounting base 100 can be made of aluminum alloy, the swing arm 200 can be made of steel, and the connecting shaft 300 can be made of steel. Of course, the mounting base 100, the swing arm 200 and the connecting shaft 300 can also be made of other materials, which are not limited in the present application.

[0033] In the related art, the power mechanism is connected with the vehicle door through a belt wheel mechanism or a pull wire transmission mechanism to drive the vehicle door to open or close. However, the belt wheel mechanism and the pull wire transmission mechanism have a deformable soft material, and there is a problem of unstable transmission.

[0034] In the embodiment of the present application, the power mechanism 400 is connected with the swing arm 200 through the connecting shaft 300, and the swing arm 200 is used for connecting the vehicle door. That is, the power mechanism 400 drives the vehicle door to open or close by transmitting power to the vehicle door through the connecting shaft 300 and the swing arm 200 in sequence. The connecting shaft 300 and the swing arm 200 are hard materials that are not easy to deform, so that the transmission cooperation between the components in the transmission process is stable, the normal work of the components is ensured, the transmission power of the vehicle door opening and closing driving device in the embodiment of the present application can be stably and continuously output to the vehicle door, and the problems of jerk and virtual position in the process of opening and closing the vehicle door are alleviated. Therefore, the embodiment of the present application can solve the problem of unstable transmission power of the vehicle door opening and closing driving device in the related art.

[0035] There are various connection modes for connecting the output end of the power mechanism 400 and the first connecting end 210 through the connecting shaft 300. In an optional embodiment, the output end of the power mechanism 400 and the first connecting end 210 can be respectively connected to the two end portions of the connecting shaft 300 in the axial direction.

[0036] In a preferred embodiment, the connecting shaft 300 can be provided with an assembly hole, at least part of the output end of the power mechanism 400 can extend into the assembly hole and be connected with the assembly hole, and the output end of the power mechanism 400 can drive the connecting shaft 300 to rotate synchronously. The first connecting end 210 can be provided with a mounting hole, at least part of the connecting shaft 300 can be located in the mounting hole and be connected with the mounting hole, and the connecting shaft 300 can drive the first connecting end 210 to rotate synchronously, thereby driving the swing arm 200 to rotate synchronously.

[0037] In this case, the output end of the power mechanism 400 and the connecting shaft 300 have a coinciding part in the transmission direction of both, and the connecting shaft 300 and the first connecting end 210 have a coinciding part in the transmission direction of both, so that the length of the output end of the power mechanism 400, the connecting shaft 300 and the first connecting end 210 in the transmission direction of the three is reduced, thereby shortening the transmission length of the vehicle door opening and closing driving device and further improving the transmission stability of the vehicle door opening and closing driving device.

[0038] In the embodiment of the present application, the axis of the output end of the power mechanism 400, the axis of the connecting shaft 300 and the rotation axis a of the first connecting end 210 can coincide.

[0039] In order to further improve the movement accuracy and stability of the swing arm 200, in the embodiment of the present application, the first connecting end 210 and the mounting base 100 can be limited in the direction of the rotation axis a of the first connecting end 210, and the first connecting end 210 and the mounting base 100 can be limited in the plane perpendicular to the rotation axis a of the first connecting end 210.

[0040] In this case, the mounting base 100 limits the first connecting end 210 to block the movement of the first connecting end 210 in the direction of the rotation axis a and in the plane perpendicular to the rotation axis a, thereby improving the movement accuracy and stability of the swing arm 200.

[0041] Optionally, the first connecting end 210 can be cylindrical or cuboid or other shapes, in the case of the first connecting end 210 being cylindrical, the rotation axis a of the first connecting end 210 coincides with its own axis, and the plane perpendicular to the rotation axis a is the radial plane of the first connecting end 210, and the mounting base 100 can limit the first connecting end 210 in the axial and radial directions of the first connecting end 210, thereby reducing the axial and radial movement of the first connecting end 210 and improving the movement accuracy and stability of the swing arm 200.

[0042] There are many structures for the mounting base 100 to limit the first connecting end 210, in an optional embodiment, the mounting base 100 can be provided with a mounting space 110, and the first connecting end 210 can be located in the mounting space 110, and the mounting space 110 can have two opposite first side walls 111, and the two first side walls 111 can be provided with through holes.

[0043] The two ends of the connecting shaft 300 can extend out of the first connecting end 210 and respectively extend into the through holes of the two first side walls 111.

[0044] In the direction of the rotation axis a of the first connecting end 210, the two opposite axial end faces of the first connecting end 210 can be in limiting contact with the two first side walls 111 respectively, so that the first connecting end 210 and the mounting base 100 are in limiting cooperation in the direction of the rotation axis a of the first connecting end 210. It should be noted that the axial end faces of the first connecting end 210 refer to the two end faces of the first connecting end 210 distributed in opposite directions in the direction of the rotation axis a.

[0045] In the plane perpendicular to the rotation axis a of the first connecting end 210, the two ends of the connecting shaft 300 can be in limiting contact with the inner walls of the perforations of the two first side walls 111 respectively, so that the first connecting end 210 and the mounting base 100 are in limiting cooperation in the plane perpendicular to the rotation axis a of the first connecting end 210.

[0046] In this structure, the mounting base 100 limits the first connecting end 210 in a simple and reliable manner.

[0047] Of course, in other optional embodiments, the first connecting end 210 of the swing arm 200 can be cylindrical, the direction of the rotation axis a of the first connecting end 210 coincides with the axial direction of the first connecting end 210, the connecting shaft 300 can be entirely inserted into the first connecting end 210 of the swing arm 200, the two ends of the first connecting end 210 can be inserted into the perforations of the two first side walls 111 respectively, and the inner walls of the perforations can be in limiting cooperation in the radial direction of the first connecting end 210, the portion of the first connecting end 210 inserted into the perforation can be provided with a radial protrusion, the inner wall of the perforation can be provided with a radial recess, the radial protrusion can be inserted into the radial recess and in limiting cooperation in the axial direction of the first connecting end 210, so that the first connecting end 210 and the mounting base 100 are in limiting cooperation in the axial direction of the first connecting end 210.

[0048] In the above-mentioned embodiments, the two opposite axial end faces of the first connecting end 210 can be in limiting contact with the two first side walls 111 respectively, so as to realize the limiting cooperation of the first connecting end 210 and the mounting base 100 in the direction of the rotation axis a of the first connecting end 210. In an optional embodiment, the two opposite axial end faces of the first connecting end 210 can be in direct contact with the two first side walls 111 respectively, so as to realize the limiting contact.

[0049] In another preferred embodiment, the door opening and closing driving device can further include a gasket 500, the two ends of the connecting shaft 300 located outside the first connecting end 210 can be sleeved with the gasket 500, and the gasket 500 sleeved on the two ends of the connecting shaft 300 can be located between the corresponding first side wall 111 and the axial end face of the first connecting end 210. In the direction of the rotation axis a of the first connecting end 210, the two opposite axial end faces of the first connecting end 210 can be indirectly in contact with the two first side walls 111 through the gasket 500, so as to realize the limiting contact.

[0050] In this case, the gasket 500 can fill the assembly gap between the first connecting end 210 and the two first side walls 111 in the direction of the rotation axis a, ensure the limited fit of the first connecting end 210 and the mounting base 100 in the direction of the rotation axis a, and reduce the dimensional machining precision requirement for the distance between the first connecting end 210 and the two first side walls 111, thereby reducing the machining difficulty.

[0051] In the above embodiment, in the plane perpendicular to the rotation axis a, the two ends of the connecting shaft 300 are in limited contact with the inner walls of the two perforations of the two first side walls 111, respectively, to achieve the limited fit of the first connecting end 210 and the mounting base 100 in the plane perpendicular to the rotation axis a. In an alternative embodiment, the two ends of the connecting shaft 300 can be in direct contact with the inner walls of the two perforations of the two first side walls 111, respectively, to achieve the limited contact.

[0052] In another preferred embodiment, the door opening and closing drive device can further include a shaft sleeve 600, and the two ends of the connecting shaft 300 located outside the first connecting end 210 can be sleeved with the shaft sleeve 600, and the shaft sleeve 600 can include a first limiting sleeve 610, and the first limiting sleeve 610 located at the two ends of the connecting shaft 300 can be located between the inner wall of the corresponding perforation and the outer wall of the connecting shaft 300, respectively, and in the plane perpendicular to the rotation axis a, the two ends of the connecting shaft 300 can be indirectly contacted with the inner walls of the two perforations of the two first side walls 111 through the corresponding first limiting sleeves 610, respectively, to achieve the limited contact.

[0053] In this case, the first limiting sleeve 610 can fill the assembly gap between the perforation and the connecting shaft 300 in the plane perpendicular to the rotation axis a, ensure the limited fit of the perforation and the connecting shaft 300 in the plane perpendicular to the rotation axis a, and reduce the dimensional machining precision requirement for the perforation and the connecting shaft 300, thereby reducing the machining difficulty.

[0054] In a further embodiment, the shaft sleeve 600 can further include a second limiting sleeve 620, and the second limiting sleeve 620 and the first limiting sleeve 610 can be distributed in the direction of the rotation axis a of the first connecting end 210, and the second limiting sleeve 620 located at the two ends of the connecting shaft 300 can be located between the corresponding first side wall 111 and the shaft end face of the first connecting end 210, respectively, and in the direction of the rotation axis a of the first connecting end 210, the two opposite shaft end faces of the first connecting end 210 can be indirectly contacted with the two first side walls 111 through the second limiting sleeves 620, respectively, to achieve the limited contact.

[0055] In this case, the second limiting sleeve 620 can fill the assembly gap between the first connecting end 210 and the two first side walls 111 of the mounting space 110 in the direction of the rotation axis a, to ensure the limiting fit of the first connecting end 210 and the mounting base 100 in the direction of the rotation axis a, and to reduce the size machining precision requirement for the distance between the first connecting end 210 and the two first side walls 111, thereby reducing the machining difficulty.

[0056] Of course, in the embodiment of the present application, the gasket 500 and the second limiting sleeve 620 can cooperate to fill the assembly gap between the first connecting end 210 and the two first side walls 111 of the mounting space 110 in the direction of the rotation axis a, and in the gasket 500 and the second limiting sleeve 620, the gasket 500 abuts against the shaft end face of the first connecting end 210, and the second limiting sleeve 620 abuts against the first side wall 111. The gasket 500 is surface treated to have a surface roughness less than that of the first connecting end 210.

[0057] In this case, in the case of relative rotation between the gasket 500 and the first connecting end 210, the friction between the gasket 500 and the first connecting end 210 can be reduced, and the wear of the swing arm 200 can be reduced.

[0058] In the embodiment of the present application, the shaft sleeve 600 can also be surface treated to have a surface roughness less than that of the connecting shaft 300. In this case, in the case of relative rotation between the shaft sleeve 600 and the connecting shaft 300, the friction between the shaft sleeve 600 and the connecting shaft 300 can be reduced, and the wear of the connecting shaft 300 can be reduced.

[0059] In a further embodiment, the surface roughness of the gasket 500 can be less than that of the connecting shaft 300, to reduce the wear of the connecting shaft 300 in the case of relative rotation between the two.

[0060] Optionally, the first limiting sleeve 610 of the shaft sleeve 600 can be fixedly sleeved on the inner wall of the through hole by interference fit or the like, and the gasket 500 can be compressed between the first connecting end 210 and the first side wall 111, or the gasket 500 can be connected to the second limiting sleeve 620 of the shaft sleeve 600 by limiting fit, so that the two cannot rotate relative to each other, and the shaft sleeve 600 and the gasket 500 do not rotate with the connecting shaft 300 and the first connecting end 210.

[0061] Of course, in other embodiments, the shaft sleeve 600 and / or the gasket 500 can also be fixedly sleeved on the connecting shaft 300 through interference fit or the like, so that the shaft sleeve 600 and the gasket 500 rotate with the connecting shaft 300 and the first connecting end 210, and the present application does not limit whether the shaft sleeve 600 and the gasket 500 rotate with the connecting shaft 300 and the first connecting end 210.

[0062] Optionally, the material of the shaft sleeve 600 can be steel, and the material of the gasket 500 can be steel. Of course, the shaft sleeve 600 and the gasket 500 can also be made of other materials, and the present application does not limit this.

[0063] In the above embodiment, along the direction of the rotation axis a, the two ends of the connecting shaft 300 can protrude out of the mounting hole, and the part of the connecting shaft 300 located in the mounting hole can be interference fit with the mounting hole, which makes the connection between the connecting shaft 300 and the first connecting end 210 more stable, so that the transmission force of the vehicle door opening and closing drive device can be smoothly output.

[0064] Along the direction of the rotation axis a, the connecting shaft 300 can be distributed with a first shaft shoulder and a second shaft shoulder, and the two shaft end faces of the first connecting end 210 are respectively in abutment with the first shaft shoulder and the second shaft shoulder, so as to fix the positions of the connecting shaft 300 and the first connecting end 210 in the direction of the rotation axis a. In this case, the first connecting end 210 and the connecting shaft 300 are fixed, so that the connecting shaft 300 can drive the swing arm 200 to rotate.

[0065] In other optional embodiments, the connecting shaft 300 and the first connecting end 210 can also be connected through screw connection, spline fit connection or the like, so that the connecting shaft 300 can drive the swing arm 200 to rotate.

[0066] The connecting shaft 300 can include a shaft body 310, and along the direction of the rotation axis a, the shaft body 310 can include a first shaft segment 311 and a second shaft segment 312, and the diameter of the first shaft segment 311 can be greater than that of the second shaft segment 312, so that the first shaft segment 311 and the second shaft segment 312 cooperate to form a first shaft shoulder.

[0067] The connecting shaft 300 can also include a sleeve 320, which can be detachably sleeved outside the second shaft segment 312, so that the sleeve 320 and the second shaft segment 312 cooperate to form a second shaft shoulder. Optionally, after the sleeve 320 is sleeved outside the second shaft segment 312, a threaded connecting piece 700 such as a screw can be used to connect the sleeve 320 and the second shaft segment 312, so as to ensure the connection stability of the shaft body 310 and the sleeve 320. The parameter of the screw connecting the sleeve 320 and the second shaft segment 312 can be M8*40.

[0068] In this case, when the connecting shaft 300 and the first connecting end 210 need to be assembled, the second shaft section 312 of the shaft body 310 can be first passed through the mounting hole of the first connecting end 210, then the sleeve 320 is sleeved on the end of the second shaft section 312 away from the first shaft section 311, and finally the sleeve 320 and the second shaft section 312 are connected by the threaded connecting piece 700 to realize the assembly of the first connecting end 210 and the connecting shaft 300, which is simple and convenient.

[0069] Of course, such a structure also facilitates the assembly of the door opening and closing driving device. When the door opening and closing driving device is assembled, the shaft sleeve 600 can be first assembled on the first side wall 111, then the first connecting end 210 of the swing arm 200 is assembled on the mounting base 100, the gasket 500 can be assembled before or after the swing arm 200 is assembled, then the shaft body 310 of the connecting shaft 300 is assembled, then the power mechanism 400 is matched with the shaft body 310 of the connecting shaft 300, and finally the threaded connecting piece 700 is used to mount the sleeve 320 on the shaft body 310.

[0070] The power mechanism 400 can include a motor 410 and a reducer 420 connected in transmission, and the output shaft 421 of the reducer 420 forms an output end of the power mechanism 400. The motor 410 can drive the swing arm 200 to swing in different directions by forward and reverse rotation to drive the door to move in different directions, thereby realizing the opening or closing of the door. The assembly hole of the connecting shaft 300 and the output shaft 421 of the reducer 420 can be connected by spline to rotate synchronously. Specifically, the output shaft 421 of the reducer 420 can be provided with external splines, and the connecting shaft 300 can be provided with internal splines.

[0071] The splines of the output shaft 421 of the reducer 420 and the splines (or the connecting shaft 300) can be made of SWRCH35K or 35CrMnSiA, or other fatigue-resistant materials and static torque-resistant materials to improve the torque resistance of the door opening and closing driving device. The coaxiality and flatness of the splines of the motor 410 and the connecting shaft 300 can reach the H7 requirement to improve the rotation durability of the door opening and closing driving device to about 150,000 times.

[0072] Of course, in other optional embodiments, the output shaft 421 of the reducer 420 and the assembly hole of the connecting shaft 300 can also be connected by interference fit or screw connection.

[0073] The motor 410 and the speed reducer 420 can be drivingly connected through a turbine worm mechanism 440, wherein the turbine worm mechanism 440 can include a turbine and a worm, the worm can be connected with the output shaft 421 of the motor 410, the turbine can be connected with the input shaft of the speed reducer 420, and the worm and the turbine are engaged to drivingly connect the motor 410 and the speed reducer 420 through the turbine worm mechanism 440.

[0074] Of course, in other optional embodiments, the motor 410 and the speed reducer 420 can also be drivingly connected through a shaft coupling or other connecting modes, and the specific connecting mode between the motor 410 and the speed reducer 420 is not limited in the application.

[0075] The power mechanism 400 can include a mounting base plate 430, which can be connected with the mounting base 100 through a threaded connecting piece 700 such as a screw or a bolt, and one of the mounting base 100 and the mounting base plate 430 can be provided with a limiting protrusion 431, and the other can be provided with a limiting recess, the limiting protrusion 431 can extend into the limiting recess and be limitedly matched in the axial direction of the output end of the power mechanism 400.

[0076] In this case, the relative rotation between the power mechanism 400 and the mounting base 100 during the rotation of the output end of the power mechanism 400 can be prevented, so as to improve the transmission stability of the vehicle door opening and closing driving device.

[0077] Optionally, the limiting protrusion 431 can be arranged on the mounting base plate 430, and the limiting recess can be arranged on one of the first side walls 111 of the mounting base 100. The mounting base plate 430 can be the mounting base plate 430 of the speed reducer 420, and the housing of the motor 410 can be connected to the mounting base 100 through a screw connection or the like.

[0078] Based on the above-mentioned vehicle door opening and closing driving device, the application further provides a vehicle, which includes a vehicle door and the above-mentioned vehicle door opening and closing driving device. The vehicle door can be a multi-link hinge B-column-free swing door structure, and the vehicle door can be connected with the vehicle body through a multi-link hinge or other structures. The second connecting end of the swing arm 200 can be connected with the vehicle door or connected with the vehicle door through a multi-link hinge connected on the vehicle door. The power mechanism 400 can drive the vehicle door to move through the swing arm 200 to drive the vehicle door to open or close. Since the vehicle has the above-mentioned vehicle door opening and closing driving device, the beneficial effects of the vehicle brought by the vehicle door opening and closing driving device are described above, and will not be repeated here.

[0079] The above describes the basic principles of the present application in combination with specific embodiments, but it should be noted that the advantages, benefits, effects and the like mentioned in the present application are only examples and are not limiting, and these advantages, benefits, effects and the like cannot be considered as necessary for each embodiment of the present application. In addition, the above specific details disclosed are only for the purpose of illustration and understanding, and are not limiting, and the above details do not limit the present application to be necessarily implemented with the above specific details.

[0080] The block diagrams of the devices, apparatuses, equipment, systems involved in the present application are only illustrative examples and are not intended to require or imply the connection, arrangement, configuration shown in the block diagrams. As those skilled in the art will recognize, these devices, apparatuses, equipment, systems can be connected, arranged, configured in any manner. Words such as "include", "contain", "have" and the like are open-ended words, mean "including but not limited to", and can be used interchangeably. The words "or" and "and" used herein mean the word "and / or", and can be used interchangeably unless the context clearly indicates otherwise. The word "such as" used herein means the phrase "such as but not limited to", and can be used interchangeably.

[0081] It should also be noted that in the devices, equipment and methods of the present application, each component or each step can be decomposed and / or recombined. These decompositions and / or recombinations should be considered as equivalent solutions of the present application.

[0082] The above description of the disclosed aspects is provided so that any person skilled in the art can make or use the present application. Various modifications to these aspects will be apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects without departing from the scope of the present application. Therefore, the present application is not intended to be limited to the aspects shown herein, but is intended to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0083] It should be understood that the adjectives "first", "second", "third", "fourth", "fifth" and "sixth" used in the embodiments of the present application are only used for clearer description of the technical solutions, and cannot be used to limit the protection scope of the present application.

[0084] The above description has been given for the purpose of illustration and description. Furthermore, this description is not intended to limit the embodiments of the present application to the forms disclosed herein. Although a number of example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, changes, additions and sub-combinations thereof.

Claims

1. A door opening and closing drive device characterized by comprising: The application relates to a vehicle door opening and closing driving device. The application comprises: a mounting base (100); a swing arm (200), a first connecting end (210) of the swing arm (200) being rotatably mounted on the mounting base (100), and a second connecting end of the swing arm (200) being arranged to be connected to a vehicle door; a power mechanism (400) mounted on the mounting base (100), an output end of the power mechanism (400) being connected to the first connecting end (210) through a connecting shaft (300) and arranged to drive the swing arm (200) to rotate.

2. The vehicle door opening and closing driving device according to claim 1, wherein the connecting shaft (300) is provided with an assembly hole, at least a part of the output end of the power mechanism (400) extending into the assembly hole and being connected to the assembly hole, and the output end of the power mechanism (400) being capable of driving the connecting shaft (300) to rotate synchronously; the first connecting end (210) is provided with a mounting hole, at least a part of the connecting shaft (300) being located in the mounting hole and being fixedly connected to the mounting hole, and the connecting shaft (300) being capable of driving the first connecting end (210) to rotate synchronously so as to drive the swing arm (200) to rotate synchronously.

3. The vehicle door opening and closing driving device according to claim 2, wherein the first connecting end (210) and the mounting base (100) are limitingly matched in the direction of the rotation axis (a) of the first connecting end (210); and / or 4. The door opening and closing drive device according to claim 3, wherein the first connecting end (210) and the mounting base (100) are limitingly matched in a plane perpendicular to the rotation axis (a) of the first connecting end (210). the mounting base (100) is provided with a mounting space (110), the first connecting end (210) being located in the mounting space (110), the mounting space (110) having two opposite first side walls (111), the two first side walls (111) being provided with through holes, and two ends of the connecting shaft (300) extending out of the first connecting end (210) and extending into the through holes of the two first side walls (111) respectively, wherein the two opposite axial end faces of the first connecting end (210) are limitingly contacted with the two first side walls (111) in the direction of the rotation axis (a) of the first connecting end (210), so that the first connecting end (210) and the mounting base (100) are limitingly matched in the direction of the rotation axis (a) of the first connecting end (210); and / or the two ends of the connecting shaft (300) are limitingly contacted with the inner walls of the through holes of the two first side walls (111) in a plane perpendicular to the rotation axis (a) of the first connecting end (210), so that the first connecting end (210) and the mounting base (100) are limitingly matched in the plane perpendicular to the rotation axis (a) of the first connecting end (210).

5. The door opening and closing drive device according to claim 4, wherein The vehicle door opening and closing driving device further comprises a gasket (500), both ends of the connecting shaft (300) outside the first connecting end (210) are sleeved with the gasket (500), and the gasket (500) sleeved on both ends of the connecting shaft (300) is located between the shaft end surface of the corresponding first side wall (111) and the first connecting end (210) respectively. In the direction of the rotation axis (a) of the first connecting end (210), the two opposite shaft end surfaces of the first connecting end (210) are in limiting contact with the two first side walls (111) through the gasket (500) respectively.

6. The door opening and closing drive device according to claim 5, wherein The vehicle door opening and closing driving device further comprises a shaft sleeve (600), both ends of the connecting shaft (300) outside the first connecting end (210) are sleeved with the shaft sleeve (600), the shaft sleeve (600) comprises a first limiting sleeve (610), the first limiting sleeve (610) located at both ends of the connecting shaft (300) is located between the inner wall of the corresponding perforation and the outer wall of the connecting shaft (300) respectively, In the plane perpendicular to the rotation axis (a) of the first connecting end (210), the two ends of the connecting shaft (300) are in limiting contact with the inner walls of the perforations of the two first side walls (111) through the corresponding first limiting sleeves (610) respectively.

7. The door opening and closing drive device according to claim 6, wherein The shaft sleeve (600) further comprises a second limiting sleeve (620), the second limiting sleeve (620) and the first limiting sleeve (610) are distributed in the direction of the rotation axis (a) of the first connecting end (210), and the second limiting sleeve (620) located at both ends of the connecting shaft (300) is located between the corresponding first side wall (111) and the shaft end surface of the first connecting end (210) respectively; In the direction of the rotation axis (a) of the first connecting end (210), the two opposite shaft end surfaces of the first connecting end (210) are in limiting contact with the two first side walls (111) through the second limiting sleeve (620) respectively.

8. The door opening and closing drive device according to claim 7, wherein Among the gasket (500) and the second limiting sleeve (620), the gasket (500) abuts against the shaft end surface of the first connecting end (210), the second limiting sleeve (620) abuts against the first side wall (111), the surface roughness of the gasket (500) is less than the surface roughness of the first connecting end (210), and the surface roughness of the shaft sleeve (600) is less than the surface roughness of the connecting shaft (300).

9. The vehicle door opening and closing driving device according to any one of claims 2-8, wherein, In the direction of the rotation axis (a) of the first connecting end (210), both ends of the connecting shaft (300) protrude out of the mounting hole, and the part of the connecting shaft (300) located in the mounting hole is in interference fit with the mounting hole; The connecting shaft (300) is provided with a first shaft shoulder and a second shaft shoulder in the direction of the rotation axis (a) of the first connecting end (210), and the two shaft end faces of the first connecting end (210) abut against the first shaft shoulder and the second shaft shoulder respectively.

10. The door opening and closing drive device according to claim 9, wherein The connecting shaft (300) comprises a shaft body (310), which comprises a first shaft section (311) and a second shaft section (312) in the direction of the rotation axis (a) of the first connecting end (210), and the diameter of the first shaft section (311) is greater than that of the second shaft section (312), so that the first shaft section (311) and the second shaft section (312) cooperate to form the first shaft shoulder. The connecting shaft (300) further comprises a sleeve (320) which is detachably sleeved outside the second shaft section (312) so that the sleeve (320) and the second shaft section (312) cooperate to form the second shaft shoulder.

11. The vehicle door opening and closing driving device according to any one of claims 2-10, wherein The power mechanism (400) comprises a transmission-connected motor (410) and a speed reducer (420), the output shaft (421) of the speed reducer (420) forms the output end of the power mechanism (400), and the output shaft (421) of the speed reducer (420) is spline-connected with the assembly hole of the connecting shaft (300) to make them rotate synchronously. The spline of the output shaft (421) of the speed reducer (420) and the spline of the connecting shaft (300) are made of SWRCH35K or 35CrMnSiA.

12. The door opening and closing drive device according to any one of claims 1-11, wherein, The power mechanism (400) comprises a mounting base plate (430) connected with the mounting base (100), and one of the mounting base (100) and the mounting base plate (430) is provided with a limiting protrusion (431) and the other is provided with a limiting recess, the limiting protrusion (431) extends into the limiting recess and is limited in cooperation around the axis direction of the output end of the power mechanism (400).

13. A vehicle comprising a vehicle door and the vehicle door opening and closing driving device according to any one of claims 1-12, the vehicle door is connected with the second connecting end of the swing arm (200), and the power mechanism (400) can drive the vehicle door to move through the swing arm (200) to drive the vehicle door to open or close.

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