WO2020113983A1 - 螺母丝杠式自动门开闭机构、汽车自动门和汽车 - Google Patents

螺母丝杠式自动门开闭机构、汽车自动门和汽车 Download PDF

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Publication number
WO2020113983A1
WO2020113983A1 PCT/CN2019/099114 CN2019099114W WO2020113983A1 WO 2020113983 A1 WO2020113983 A1 WO 2020113983A1 CN 2019099114 W CN2019099114 W CN 2019099114W WO 2020113983 A1 WO2020113983 A1 WO 2020113983A1
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WO
WIPO (PCT)
Prior art keywords
nut
screw
closing mechanism
automatic door
push rod
Prior art date
Application number
PCT/CN2019/099114
Other languages
English (en)
French (fr)
Inventor
唐伟航
饶金贵
廖勇林
邓飞
马银才
Original Assignee
广东东箭汽车科技股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 广东东箭汽车科技股份有限公司 filed Critical 广东东箭汽车科技股份有限公司
Priority to AU2019394054A priority Critical patent/AU2019394054A1/en
Priority to KR1020217020260A priority patent/KR20210096651A/ko
Priority to US17/049,295 priority patent/US11466503B2/en
Priority to CA3121663A priority patent/CA3121663C/en
Priority to JP2021532075A priority patent/JP7209090B2/ja
Priority to EP19892366.6A priority patent/EP3892808A4/en
Publication of WO2020113983A1 publication Critical patent/WO2020113983A1/zh
Priority to AU2023202225A priority patent/AU2023202225B2/en

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00—Power-operated mechanisms for wings
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00—Power-operated mechanisms for wings
    • E05F15/60—Power-operated mechanisms for wings using electrical actuators
    • E05F15/603—Power-operated mechanisms for wings using electrical actuators using rotary electromotors
    • E05F15/611—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings
    • E05F15/616—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings operated by push-pull mechanisms
    • E05F15/622—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings operated by push-pull mechanisms using screw-and-nut mechanisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
    • B60J5/00—Doors
    • B60J5/04—Doors arranged at the vehicle sides
    • B60J5/047—Doors arranged at the vehicle sides characterised by the opening or closing movement
    • B60J5/0473—Doors arranged at the vehicle sides characterised by the opening or closing movement the door having a hinge axis in the direction of the vehicle longitudinal axis
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00—Power-operated mechanisms for wings
    • E05F15/60—Power-operated mechanisms for wings using electrical actuators
    • E05F15/603—Power-operated mechanisms for wings using electrical actuators using rotary electromotors
    • E05F15/611—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings
    • E05F15/63—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings operated by swinging arms
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2201/00—Constructional elements; Accessories therefor
    • E05Y2201/20—Brakes; Disengaging means; Holders; Stops; Valves; Accessories therefor
    • E05Y2201/21—Brakes
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2201/00—Constructional elements; Accessories therefor
    • E05Y2201/20—Brakes; Disengaging means; Holders; Stops; Valves; Accessories therefor
    • E05Y2201/214—Disengaging means
    • E05Y2201/216—Clutches
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2201/00—Constructional elements; Accessories therefor
    • E05Y2201/20—Brakes; Disengaging means; Holders; Stops; Valves; Accessories therefor
    • E05Y2201/224—Stops
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2201/00—Constructional elements; Accessories therefor
    • E05Y2201/60—Suspension or transmission members; Accessories therefor
    • E05Y2201/622—Suspension or transmission members elements
    • E05Y2201/624—Arms
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2201/00—Constructional elements; Accessories therefor
    • E05Y2201/60—Suspension or transmission members; Accessories therefor
    • E05Y2201/622—Suspension or transmission members elements
    • E05Y2201/686—Rods, links
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2201/00—Constructional elements; Accessories therefor
    • E05Y2201/60—Suspension or transmission members; Accessories therefor
    • E05Y2201/622—Suspension or transmission members elements
    • E05Y2201/696—Screw mechanisms
    • E05Y2201/70—Nuts
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2201/00—Constructional elements; Accessories therefor
    • E05Y2201/60—Suspension or transmission members; Accessories therefor
    • E05Y2201/622—Suspension or transmission members elements
    • E05Y2201/696—Screw mechanisms
    • E05Y2201/702—Spindles; Worms
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2600/00—Mounting or coupling arrangements for elements provided for in this subclass
    • E05Y2600/60—Mounting or coupling members; Accessories therefor
    • E05Y2600/626—Plates or brackets
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2800/00—Details, accessories and auxiliary operations not otherwise provided for
    • E05Y2800/26—Form or shape
    • E05Y2800/266—Form or shape curved
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/50—Application of doors, windows, wings or fittings thereof for vehicles
    • E05Y2900/53—Type of wing
    • E05Y2900/531—Doors

Definitions

  • the present application relates to the technical field of automobiles, in particular to a nut-screw type automatic door opening and closing mechanism, an automatic door for automobiles, and an automobile.
  • the automatic opening and closing of the car's side door has a strong appeal and a sense of technology for users. At the same time, it also has a high practicality, which greatly facilitates the owner's daily use of the car. Therefore, the modification and upgrade of the car door has a very good Great market demand.
  • the traditional automobile automatic door opening and closing mechanism mostly uses a four-bar linkage mechanism, which has low efficiency and large space requirement. It has high requirements for the installation of the door, which limits the intelligent upgrade and modification of the door.
  • a nut screw type automatic door opening and closing mechanism includes a driving device, a screw, a nut push block and a push rod; the drive device is fixedly connected to the vehicle door, the screw is rotatably installed on the vehicle door, and the nut push block is sleeved on the wire On the bar, the first end of the push rod is hinged with the nut push block, and the second end of the push rod is hinged with the body body.
  • the driving device can drive the screw to rotate, so that the nut push block and the push rod reciprocate linearly along the screw. In turn, the push rod drives the door to open or close relative to the body.
  • the nut screw-type automatic door opening and closing mechanism can realize the automatic opening and closing of the car door through the cooperation of the driving device, the screw, the nut push block and the push rod.
  • the door and the body body are connected by a door hinge
  • the push rod and the body body side wall are connected by a push rod hinge.
  • the screw rotates under the drive of the driving device, so that the nut
  • the push block can reciprocate linearly along the lead screw and generate an axial force. This axial force acts on the push rod through the nut push block.
  • the push rod finally applies the axial force to the hinge of the push rod and the side wall of the body.
  • the body body side wall generates a reaction force opposite to the axial force and acts on the door along the push rod.
  • the reaction force does not pass through the rotation center of the door, so there is a force arm between the door rotation center and the A rotating torque will be generated to drive the door to open or close automatically.
  • the hinge center of the push rod is not consistent with the rotation center of the door, the opening angle of the door is different from the swing angle of the push rod.
  • the above-mentioned nut screw type automatic door opening and closing mechanism hinges the push rod and the nut push block so that the push rod can swing relative to the vehicle door, thereby ensuring the normal operation of the entire mechanism.
  • the overall structure of the nut screw type automatic door opening and closing mechanism of the present application is simple, reliable coordination, small space occupation, minor changes to the original car door structure, and high versatility; and the nut screw coordination transmission efficiency is high, using a smaller
  • the drive device can realize the opening and closing of the vehicle door, so that the nut screw automatic door opening and closing mechanism can well meet the development requirements of miniaturization and light weight.
  • the nut screw automatic door opening and closing mechanism further includes a bracket, the bracket is fixedly connected to the door, the two ends of the screw are respectively connected to the bracket, the driving device is fixed on the bracket, and the driving device is driven by the screw connection.
  • the nut pushing block includes a transmission part, a sliding part and a hinge shaft; the hinge shaft is located between the transmission part and the sliding part, the axis of the hinge shaft is perpendicular to the axis of the screw; the transmission part is sleeved on the screw It is screw-driven with the screw, the sliding part is slidingly connected with the bracket, and the first end of the push rod is hinged with the hinge shaft.
  • the driving device includes a driving motor and a transmission structure.
  • the axis of the output shaft of the driving motor is parallel to the axis of the screw.
  • the transmission structure connects the output shaft of the driving motor with the screw.
  • the drive motor and the lead screw are located on the same side of the transmission mechanism.
  • the transmission structure is a gear transmission mechanism
  • the power input end of the transmission mechanism is fixedly connected to the output shaft of the drive motor
  • the power output end of the transmission mechanism is fixedly connected to the lead screw.
  • the driving device further includes a brake and/or a clutch, and the brake and/or the clutch is provided between the driving motor and the transmission structure.
  • the push rod has a bent portion.
  • the push rod is provided with a stop portion, and the stop portion is used to limit the rotation of the vehicle door.
  • the outer peripheral surface of the nut push block is provided with a first rotation stop surface
  • the bracket is provided with a second rotation stop surface
  • the first rotation stop surface and the second rotation stop surface are slidingly engaged to restrict the nut push block Turn.
  • the nut push block and the first end of the push rod are connected by a ball hinge.
  • the bracket includes a housing portion, and the second rotation stop surface is formed on an inner surface of the housing portion.
  • the driving device further includes a rotary damper, which uses its own damping to keep the vehicle door hovering.
  • the rotary damper is provided between the driving motor and the transmission structure.
  • An automobile automatic door includes the nut-screw type automatic door opening and closing mechanism as described above.
  • An automobile includes the automobile automatic door as described above.
  • FIG. 1 is a schematic structural diagram of a nut-screw type automatic door opening and closing mechanism according to the first embodiment of the present application
  • FIG. 2 is a schematic structural view of the nut screw automatic door opening and closing mechanism in FIG. 1 in another state;
  • FIG. 3 is a schematic plan view of the nut screw automatic door opening and closing mechanism in FIG. 1;
  • FIG. 4 is a partial cross-sectional schematic diagram of the nut screw automatic door opening and closing mechanism in FIG. 1 in a plan view;
  • FIG. 5 is a schematic diagram of the nut screw automatic door opening and closing mechanism of FIG. 1 when the door is driven to open;
  • FIG. 6 is a schematic diagram of the nut screw automatic door opening and closing mechanism of FIG. 1 when the vehicle door is closed;
  • FIG. 7 is a schematic structural diagram of a nut screw type automatic door opening and closing mechanism according to a second embodiment of the present application.
  • FIG. 8 schematically shows a side view of the nut pushing block and the housing part in the second embodiment of the present application
  • FIG. 9 is a schematic perspective view of a partial structure of a nut screw type automatic door opening and closing mechanism according to a second embodiment of the present application when applied to an automobile.
  • FIGS. 1 to 4 shows a first embodiment of a nut-screw type automatic door opening and closing mechanism, which includes a driving device 10, a screw 20, a nut push block 30 and a push rod 40, the driving device 10 and the door 100 is fixedly connected, the screw 20 is rotatably installed on the door 100, the nut push block 30 is sleeved on the screw 20, the first end of the push rod 40 is hinged with the nut push block 30, and the second end is hinged with the body body 200
  • the driving device 10 drives the screw 20 to rotate, so that the nut pusher 30 and the push rod 40 reciprocate linearly along the screw 20, so that the push rod 40 drives the door 100 to open or close relative to the body 200.
  • the nut screw type automatic door opening and closing mechanism can be applied to the automatic opening and closing of automobile doors, and of course, can also be applied to the automatic opening and closing of door bodies of other devices.
  • the side wall of the vehicle door 100 and the body body 200 are connected by a door hinge 101 so that the vehicle door 100 can rotate relative to the body body 200.
  • the driving device 10 and the lead screw 20 may be directly installed on the vehicle door 100 or may be installed on the vehicle door 100 through the bracket 50.
  • the screw 20 can rotate around its own axis under the driving of the driving device 10, and a spiral line is provided in the nut pushing block 30 to helically cooperate with the screw 20 to form a screw nut pair.
  • the screw drive between the nut push block 30 and the lead screw 20 may be a sliding screw drive, a rolling screw drive, or a static pressure screw drive.
  • the first end of the push rod 40 is hinged with the nut push block 30, and the second end is hinged with the side wall of the body body 200 through the push rod hinge 42.
  • the push rod 40 can It swings relative to the vehicle door 100 for adaptive adjustment, thereby ensuring the normal operation of the entire mechanism.
  • the center of rotation of the push rod hinge 42 does not coincide with the center of rotation of the door hinge 101.
  • the virtual connection formed by the hinge point formed by the push rod hinge 42, the hinge point formed by the door hinge 101, and the hinge point formed by the hinge of the push rod 40 and the nut push block 30 changes as the door 100 swings Triangle.
  • the specific shape of the push rod 40 can be set according to its trajectory.
  • the push rod 40 can be set as a curved push rod with a certain arc.
  • the push rod The rod 40 can avoid other structures on the door 100 by its own shape to prevent interference with the door 100, thereby reducing the structural changes of the door 100, and realizing the nondestructive modification and upgrade of the door 100, making the nut screw type
  • the automatic door opening and closing mechanism is more versatile.
  • the hinges will not be parallel to each other.
  • the door 100 can be opened and closed smoothly, and the spherical joints can be used for the coordination of the hinges.
  • the nut-screw type automatic door opening and closing mechanism further includes a control unit, which is electrically connected to the driving device 10, and the control unit is used to control the operation and closing of the driving device 10.
  • the above-mentioned nut screw automatic door opening and closing mechanism can realize the automatic opening and closing of the automobile door 100 through the cooperation of the driving device 10, the screw 20, the nut push block 30 and the push rod 40.
  • the screw 20 rotates under the drive of the driving device 10, so that the nut pusher 30 can reciprocate linearly along the screw 20 and generate an axial force.
  • the nut push block 30 acts on the push rod 40, and the push rod 40 finally exerts an axial force on the hinge of the push rod 40 and the side wall of the vehicle body 200.
  • a side reaction of the body body 200 generates a reaction force opposite to the axial force, and acts on the door 100 along the push rod 40.
  • the reaction force does not pass through the center of rotation of the door 100, and thus between the center of rotation of the door 100 There is a force arm, so a rotation torque is generated to drive the door 100 to automatically open or close.
  • the hinge center of the push rod 40 does not coincide with the rotation center of the door 100, the opening angle of the door 100 is different from the swing angle of the push rod 40.
  • the above-mentioned nut screw type automatic door opening and closing mechanism hinges the push rod 40 and the nut push block 30 so that the push rod 40 can swing relative to the door 100, thereby ensuring the normal operation of the entire mechanism.
  • the overall structure of the nut screw type automatic door opening and closing mechanism of the present application is simple, reliable coordination, small space occupation, minor changes to the original car door structure, and high versatility; and the nut screw coordination transmission efficiency is high, using a smaller
  • the driving device 10 can realize the opening and closing of the vehicle door 100, so that the nut screw type automatic door opening and closing mechanism can well meet the development requirements of miniaturization and light weight.
  • the nut-screw type automatic door opening and closing mechanism further includes a bracket 50, which is fixedly connected to the vehicle door 100, and two ends of the screw 20 are rotatably connected to the bracket 50, the driving device 10 is fixed on the bracket 50, and the driving device 10 Drive connected with screw 20.
  • the bracket 50 is provided to facilitate the installation of the driving device 10 and the lead screw 20, so that the structural modification of the vehicle door 100 itself can be reduced, and the versatility can be further improved.
  • the two ends of the screw 20 can be rotatably connected to the bracket 50 through a bearing or a copper sleeve, and the driving device 10 is drivingly connected to the screw 20 to drive the screw 20 to rotate.
  • the nut pushing block 30 includes a transmission part 31, a sliding part 32 and a hinge shaft 33, the hinge shaft 33 is located between the transmission part 31 and the sliding part 32, the axis of the hinge shaft 33 is perpendicular to the screw 20 axis.
  • the transmission part 31 is sleeved on the screw 20 and is screwed with the screw 20.
  • the sliding part 32 is slidingly connected to the bracket 50 to restrict the rotation of the nut pusher 30 relative to the axis of the screw 20.
  • the first end of the push rod 40 is hinged with the hinge shaft 33.
  • the rotation of the nut pushing block 30 relative to the axis of the screw 20 can also be restricted by other suitable structures, as long as it can ensure that when the screw 20 rotates, the nut pushing block 30 can perform linear reciprocating motion along the screw 20. can.
  • a spiral line is provided in the transmission part 31 and is helically transmitted with the screw 20, and the sliding part 32 and the bracket 50 can be slidingly connected by a sliding structure, for example, an axis with the screw 20 can be provided on the bracket 50
  • the sliding portion 32 is provided with a slider that cooperates with the sliding groove. The cooperation of the sliding groove and the slider can also limit the rotation of the nut pusher 30 relative to the axis of the screw 20.
  • the first end of the push rod 40 is sleeved on the hinge shaft 33 so that the push rod 40 can swing relative to the hinge shaft 22.
  • the driving device 10 drives the lead screw 20 to rotate, so as to drive the transmission part 31 to move linearly along the lead screw 20, and then pushes the push rod 40 to move under the action of the hinge shaft 33, and the push rod 40 can perform swing adjustment.
  • the sliding connection of the sliding portion 32 and the bracket 50 can also ensure the smoothness and accuracy of the movement of the nut push block 30 and the push rod 40.
  • the nut-screw type transmission mechanism has a compact overall structure, occupies less space, is reliable in coordination, and has higher transmission efficiency.
  • the drive device 10 includes a drive motor 11 and a transmission structure 12, the axis of the output shaft of the drive motor 11 is parallel to the axis of the screw 20, and the transmission structure 12 drives and connects the output shaft of the drive motor 11 and the screw 20.
  • the driving motor 11 is placed horizontally on the upper side or the lower side of the screw 20, the axis of the output shaft of the driving motor 11 is parallel to the axis of the screw 20, and the transmission structure 12 separates the output shaft of the driving motor 11 and the screw 20
  • the drive is connected to transmit torque.
  • the transmission structure 12 may be a gear transmission mechanism or a synchronous belt transmission mechanism. As an example, referring to FIG.
  • the drive motor 11 and the screw 20 are located on the same side of the transmission structure 12, so that the drive motor 11 and the screw 20 are arranged side by side, thus, while ensuring normal transmission between the drive motor 11 and the screw 20 It can also effectively reduce the space occupied by the drive device 10 in the axial direction of the lead screw 20 (that is, the lateral direction of the door or the horizontal direction of the door).
  • the transmission structure 12 is a two-stage gear transmission mechanism, which includes a first transmission gear 121 and a second transmission gear 122, the first transmission gear 121 is fixedly connected to the output shaft of the drive motor 11, and the second transmission gear 122 is connected to the screw 20 is fixedly connected, and the first transmission gear 121 meshes with the second transmission gear 122.
  • the torque is transmitted through the meshing of the first transmission gear 121 and the second transmission gear 122, so that the structure of the transmission structure 12 is simple and the cooperation is reliable.
  • the transmission structure 12 may also be a multi-stage (more than two-stage) gear transmission mechanism. It can be understood that the power input end of the transmission mechanism 12 is fixedly connected to the output shaft of the drive motor 11, and the power of the transmission mechanism 12 The output end is fixedly connected to the screw 20 to realize the transmission of torque from the drive motor 11 to the screw 20.
  • the driving device 10 may further include a brake 13 and/or a clutch 14 provided between the drive motor 11 and the transmission structure 12.
  • the brake 13 By providing a brake 13 between the drive motor 11 and the transmission structure 12, when the drive motor 11 stops driving, the brake 13 is locked, and the friction torque of the brake 13 can ensure that the door 100 is hovered at the current position, thereby effectively avoiding the door 100 After being opened, it cannot be kept in the current position due to inertial effects or other reasons, thereby affecting the user experience.
  • the driving motor 11 drives the screw 20 to rotate, the brake 13 is released, so that the vehicle door 100 can rotate normally.
  • the brake 13 is preferably an electromagnetic brake.
  • other types of brakes or friction devices can also be used, for example, a spring brake.
  • the brake 13 and the clutch 14 may also be eliminated.
  • the motor may be reversely braked to provide door hovering power, or the static resistance of the motor may be used to maintain the hovering of the door.
  • a clutch 14 is provided between the drive motor 11 and the brake 13, and when the door is electrically opened and closed, the clutch 14 is in an engaged state to transmit the driving force.
  • the clutch 14 is in a disengaged state, and the vehicle door 100 can be easily opened or closed manually.
  • the clutch 14 may use a smaller-sized "mechanical one-way transmission clutch" or other types of clutches.
  • the push rod 40 is provided with a stop 41, and the stop 41 is used to limit the rotation of the vehicle door 100.
  • the push rod 40 is provided with a boss-shaped stop portion 41.
  • the stop portion 41 interferes with the door 100 itself structure or the bracket 50, as shown in FIG.
  • the continued opening of the door 100 plays a role in protecting the door hinge 101, the nut push block 30, and the lead screw 20, and prevents the door 100 from opening too much and causing an impact on the door hinge 101, the nut push block 30, and the lead screw 20.
  • the present application also proposes an automobile automatic door.
  • the automobile automatic door includes the nut-screw-type automatic door opening and closing mechanism as described above.
  • the specific structure of the nut-screw-type automatic door opening and closing mechanism can be referred to the above embodiments.
  • the automobile automatic door adopts all the technical solutions of the above embodiments, and therefore at least includes all the beneficial effects brought by the above embodiments, which will not be elaborated here.
  • the main driving door is taken as an example to describe in detail the opening and closing actions of the automatic door of the automobile to which the nut-screw type automatic door opening and closing mechanism of the first embodiment of the present application is applied.
  • the driving device 10 when the driving device 10 receives the ECU instruction "open the door", the driving device 10 drives the screw 20 to rotate in the first direction, and the nut screw composed of the screw 20 and the nut push block 30 generates a pointing push rod 40 Axial force in the direction of the hinge with the side of the body body 200. This axial force finally acts on the push rod hinge 42 via the nut push block 30 and the push rod 40 (the push rod 40 and the side wall of the vehicle body 200 are hinged by the push rod hinge 42). Due to the interaction of forces, a side thrust of the body body 200 generates a reaction thrust, which acts on the door 100 through the push rod 40.
  • the nut push block 30 moves linearly along the lead screw 20 in the direction of the vehicle head; at the same time, the push rod 40 swings around the hinges at both ends, so that the mechanism can run smoothly.
  • the driving device 10 when the driving device 10 receives the ECU instruction “close the vehicle door”, the driving device 10 drives the screw 20 to rotate around the second direction, which is opposite to the above-mentioned first direction.
  • the nut screw composed of the lead screw 20 and the nut push block 30 generates an axial force in a direction away from the hinge direction of the push rod 40 and the side wall of the body body 200, and the side wall of the body body 200 generates a reaction pulling force, which acts on the door 100 A rotating torque is generated, thereby driving the vehicle door 100 to rotate and close.
  • FIG. 7 to FIG. 9 shows a second embodiment of the nut-screw type automatic door opening and closing mechanism, which is mainly different from the above-mentioned first embodiment in that: in order to realize the nut pushing block 30 along the screw 20
  • the specific structure adopted for linear reciprocating motion, and the specific embodiment adopted for controlling the hovering position of the door in order to realize the nut pushing block 30 along the screw 20.
  • the nut pusher 30 uses its shape to form a sliding fit with the bracket 50 so that the nut pusher 30 can reciprocate linearly along the axis of the screw 20 without rotating relative to the axis of the screw 20.
  • the outer peripheral surface of the nut pushing block 30 is provided with a first rotation stop surface 301
  • the bracket 50 is provided with a second rotation stop surface 510
  • the first rotation stop surface 301 and the second rotation stop surface 510 are slidingly fitted to restrict the nut from pushing Block 30 rotation.
  • the nut pushing block 30 is provided with two spaced-apart first anti-rotation surfaces 301.
  • the two first anti-rotation surfaces 301 are preferably arranged symmetrically with respect to the longitudinal axis MM in FIG.
  • the bracket 50 is provided with two The second anti-rotation surface 510, the two second anti-rotation surfaces 510 correspond to the two first anti-rotation surfaces 301 one by one.
  • This configuration contributes to the smooth movement of the nut pushing block 30.
  • the bracket 50 includes a housing portion 51, and a second rotation stop surface 510 is formed on an inner surface of the housing portion 51 facing the nut pusher 30.
  • a rotary damper 15 is added to the driving device 10, and the rotary damper 15 uses its own damping to The vehicle door 100 remains hovering.
  • the damper 15 may be a friction plate type mechanical rotary damper, a hydraulic rotary damper or other friction devices.
  • the damper 15 may be disposed between the driving motor 11 and the transmission structure 12, or inside the transmission structure 12, or between the screw 20 and the transmission structure 12, and finally, the rotation of the screw 20 may be limited.
  • the rotary damper 15 is provided between the driving motor 11 and the transmission structure 12 in this embodiment.
  • the rotary damper 15 is usually provided with a rotating part and a fixed part, wherein the fixed part remains stationary, the rotating part and the torque transmission shaft (for example, the output shaft of the drive motor 11 or the power input shaft of the transmission structure 12, Or the power output shaft of the transmission mechanism 12, etc.) are not rotatably connected.
  • the rotating part and the fixed part are frictionally connected.
  • the friction lining type mechanical rotary damper uses the friction plates that rub against each other, or the hydraulic rotary damper uses the low flow resistance characteristics of its internal hydraulic oil, so that when turning the above-mentioned rotating part, it is necessary to overcome the rotating damper rotating part and The frictional force between the fixed parts limits the movement of the push rod 40 and the screw rod 20, thereby ensuring the hovering of the vehicle door.
  • the structure of other aspects of the second embodiment of the present application may be the same as or similar to the structure of other applications of the first embodiment of the present application.
  • the push rod 40 may have a bent portion
  • the push rod 40 has a stop portion 41
  • the transmission structure 12 is a gear transmission mechanism or other transmission mechanism.
  • the process of opening and closing the automatic door of the automobile to which the nut-screw type automatic door opening and closing mechanism of the second embodiment of the present application is applied is basically the same as that described in the first embodiment above, and will not be repeated here.
  • the present application also proposes an automobile including the automatic door for automobiles as described above.
  • the automatic door for automobiles includes the nut screw type automatic door opening and closing mechanism as above.
  • the specific structure of the nut screw type automatic door opening and closing mechanism may be With reference to the above-mentioned embodiments, since the automatic door of the automobile adopts all the technical solutions of the above-mentioned embodiments, it at least includes all the beneficial effects brought by the above-mentioned embodiments, which will not be repeated here. It can be understood that, based on factors such as the weight and number of vehicle doors, multiple sets of nut-screw-type automatic door opening and closing mechanisms of the present application can be used in one car.

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Abstract

一种螺母丝杠式自动门开闭机构、汽车自动门和汽车。其中，该螺母丝杠式自动门开闭机构包括驱动装置（10）、丝杠（20）、螺母推块（30）及推杆（40），所述驱动装置（10）与车门（100）固定连接，所述丝杠（20）可转动地安装于所述车门（100）上，所述螺母推块（30）套设于所述丝杠（20）上，所述推杆（40）的第一端与所述螺母推块（30）铰接，所述推杆（40）的第二端与车身本体（200）铰接，所述驱动装置（10）驱动所述丝杠（20）转动，以使所述螺母推块（30）及所述推杆（40）沿所述丝杠（20）做往复直线运动，进而使得所述推杆（40）驱动所述车门（100）相对所述车身本体（200）打开或关闭。

Description

螺母丝杠式自动门开闭机构、汽车自动门和汽车 技术领域
本申请涉及汽车技术领域，特别是涉及一种螺母丝杠式自动门开闭机构、汽车自动门和汽车。
背景技术
汽车的自动化、智能化已成为目前汽车发展的主流方向。汽车侧门自动开启和关闭，对于用户来说具有很强的吸引力与科技感，同时，也具有很高的实用性，极大地方便了车主的日常用车，因此，汽车车门的改装升级拥有很大的市场需求。传统的汽车自动门开闭机构多采用四连杆机构，效率较低，且所需空间大，对于车门的安装要求较高，限制了车门的智能化升级改装。
发明内容
基于此，有必要针对传统的汽车自动门开闭机构效率低，占用空间大的问题，提供一种螺母丝杠式自动门开闭机构、汽车自动门和汽车。
一种螺母丝杠式自动门开闭机构，包括驱动装置、丝杠、螺母推块及推杆；驱动装置与车门固定连接，丝杠可转动地安装于车门上，螺母推块套设于丝杠上，推杆的第一端与螺母推块铰接，推杆的第二端与车身本体铰接，驱动装置能够驱动丝杠转动，以使螺母推块及推杆沿丝杠做往复直线运动，进而使得推杆驱动车门相对车身本体打开或关闭。
上述的螺母丝杠式自动门开闭机构通过驱动装置、丝杠、螺母推块及推杆的配合，可实现汽车车门的自动打开和关闭。具体地，车门与车身本体之间通过车门铰链连接，推杆与车身本体侧围之间通过推杆铰链连接，在车门打开或关闭的过程中，丝杠在驱动装置的驱动下回转，使得螺母推块可沿丝杠做往复直线运动并产生轴向力，此轴向力经螺母推块作用到推杆上，推杆最终将轴向力作用到推杆与车身本体侧围的铰接处。由此，车身本体侧围产生一个与轴向力相反的反作用力，并沿推杆作用于车门上，该反作用力不穿过车门的旋转中心，因而与车门旋转中心之间存在力臂，故会产生旋转力矩，以驱动车门自动打开或关闭。同时，由于推杆的铰接中心与车门的旋转中心不一致，因此车门的开启角度与推杆的摆动角度有差别。上述的螺母丝杠式自动门开闭机构通过将推杆与螺母推块铰接，以使推杆可相对车门摆动，从而可保证整个机构的正常运行。本申请的螺母丝杠式自动门 开闭机构整体结构简单，配合可靠，占用空间小，对原汽车车门结构改动较小，通用性较高；并且螺母丝杠配合传动效率高，采用较小的驱动装置便可实现车门的打开和关闭，从而使得该螺母丝杠式自动门开闭机构能够很好地满足小型化，轻量化的发展需求。
在其中一个实施例中，螺母丝杠式自动门开闭机构还包括支架，支架与车门固定连接，丝杠的两端分别与支架转动连接，驱动装置固定于支架上，驱动装置与丝杠传动连接。
在其中一个实施例中，螺母推块包括传动部、滑动部及铰接轴；铰接轴位于传动部与滑动部之间，铰接轴的轴线垂直于丝杠的轴线；传动部套设于丝杠上并与丝杠螺旋传动，滑动部与支架滑动连接，推杆的第一端与铰接轴铰接。
在其中一个实施例中，驱动装置包括驱动电机及传动结构，驱动电机的输出轴轴线与丝杠的轴线相平行，传动结构将驱动电机的输出轴与丝杠传动连接。
在其中一个实施例中，驱动电机与丝杠位于传动机构的同一侧。
在其中一个实施例中，传动结构为齿轮传动机构，传动机构的动力输入端与驱动电机的输出轴固定连接，传动机构的动力输出端与丝杠固定连接。
在其中一个实施例中，驱动装置还包括制动器和/或离合器，制动器和/或离合器设于驱动电机与传动结构之间。
在其中一个实施例中，推杆具有弯曲部。
在其中一个实施例中，推杆上设有止挡部，止挡部用于对车门的转动进行限位。
在其中一个实施例中，螺母推块的外周表面配置有第一止转面，支架配置有第二止转面，第一止转面与第二止转面滑动配合，以限制螺母推块的转动。
在其中一个实施例中，螺母推块与推杆的第一端通过球铰连接。
在其中一个实施例中，支架包括壳体部，第二止转面形成于壳体部的内表面上。
在其中一个实施例中，驱动装置还包括旋转阻尼器，旋转阻尼器利用自身的阻尼使车门保持悬停。
在其中一个实施例中，旋转阻尼器设于驱动电机与传动结构之间。
一种汽车自动门，包括如上所述的螺母丝杠式自动门开闭机构。
一种汽车，包括如上所述的汽车自动门。
附图说明
图1为本申请第一实施例所述的螺母丝杠式自动门开闭机构的结构示意图；
图2为图1中的螺母丝杠式自动门开闭机构另一状态下的结构示意图；
图3为图1中的螺母丝杠式自动门开闭机构的平面结构示意图；
图4为图1中的螺母丝杠式自动门开闭机构俯视状态下的局部剖面示意图；
图5为图1的螺母丝杠式自动门开闭机构驱动车门打开时的示意图；
图6为图1的螺母丝杠式自动门开闭机构驱动车门关闭时的示意图；
图7为本申请第二实施例所述的螺母丝杠式自动门开闭机构的结构示意图；
图8示意性示出了本申请第二实施例中螺母推块和壳体部的侧视图；
图9为本申请第二实施例所述的螺母丝杠式自动门开闭机构应用于汽车时的局部结构立体示意图。
附图标记说明
10驱动装置，11驱动电机，12传动结构，121第一传动齿轮，122第二传动齿轮，13制动器，14离合器，15旋转阻尼器，20丝杠，30螺母推块，301第一止转面，31传动部，32滑动部，33铰接轴，40推杆，41止挡部，42推杆铰链，50支架，51壳体部，510第二止转面，100车门，101车门铰链，200车身本体。
具体实施方式
为了便于理解本申请，下面将参照相关附图对本申请进行更全面的描述。附图中给出了本申请的较佳实施方式。但是，本申请可以以许多不同的形式来实现，并不限于本文所描述的实施方式。相反地，提供这些实施方式的目的是使对本申请的公开内容理解的更加透彻全面。
需要说明的是，当元件被称为“固定于”另一个元件，它可以直接在另一个元件上或者也可以存在居中的元件。当一个元件被认为是“连接”另一个元件，它可以是直接连接到另一个元件或者可能同时存在居中元件。相反，当元件被称作“直接在”另一元件“上”时，不存在中间元件。本申请中所述“第一”、“第二”不代表具体的数量及顺序，仅仅是用于名称的区分。
请参照图1至图4，示出了螺母丝杠式自动门开闭机构的第一实施例，其包括驱动装置10、丝杠20、螺母推块30及推杆40，驱动装置10与车门100固定连接，丝杠20可转动地安装于车门100上，螺母推块30套设于丝杠20上，推杆40的第一端与螺母推块30铰接、第二端与车身本体200铰接，驱动装置10驱动丝杠20转动，以使螺母推块30及推杆40沿丝杠20做往复直线运动，进而使得推杆40驱动车门100相对车身本体200打开或关闭。
该螺母丝杠式自动门开闭机构可应用于汽车车门的自动打开和关闭，当然，也可应用于其他装置门体的自动打开和关闭。以下主要针对该螺母丝杠式自动门开闭机构在汽车车门上的应用进行说明。具体地，车门100与车身本体200侧围通过车门铰链101连接，使得车门100可相对车身本体200转动。驱动装置10及丝杠20可直接安装于车门100上，或者通过支架50安装于车门100上。丝杠20在驱动装置10的驱动下可绕自身轴线转动，螺母推块30内设置有螺旋线，以与丝杠20螺旋配合形成丝杠螺母副。其中，螺母推块30与丝杠20之间的螺旋传动可为滑动螺旋传动、滚动螺旋传动或静压螺旋传动等。
推杆40的第一端与螺母推块30铰接，第二端通过推杆铰链42与车身本体200侧围铰接，如此，当螺母推块30带动推杆40运动的过程中，推杆40可相对车门100摆动以进行自适应调节，从而保证整个机构的正常运行。由图5中可以看出，推杆铰链42的旋转中心与车门铰链101的旋转中心不重合。作为示例，推杆铰链42所形成的铰接点、车门铰链101所形成的铰接点、推杆40与螺母推块30的铰接处所形成的铰接点的虚拟连线形成随着车门100的摆动而变化的三角形。其中，推杆40的具体形状可根据其运动轨迹进行设置，例如，如图4所示，可将推杆40设置成具有一定弧度的曲线型推杆，在车门100打开和关闭过程中，推杆40通过自身形状即可避开车门100上的其他结构，以防止与车门100产生干涉，从而可减少对车门100的结构改动，实现了对车门100的无损改装升级，使得该螺母丝杠式自动门开闭机构的通用性更强。
由于加工精度、装配误差会导致各铰链不相互平行，为了保证螺母丝杠机构运动的顺畅性，使得车门100顺利打开关闭，各铰接处的配合可采用球面副。此外，该螺母丝杠式自动门开闭机构还包括控制单元，控制单元与驱动装置10电连接，控制单元用于控制驱动装置10的运行和关闭。
上述的螺母丝杠式自动门开闭机构通过驱动装置10、丝杠20、螺母推块30及推杆40的配合，可实现汽车车门100的自动打开和关闭。具体地，在车门100打开或关闭的过程中，丝杠20在驱动装置10的驱动下回转，使得螺母推块30可沿丝杠20做往复直线运动并产生轴向力，此轴向力经螺母推块30作用到推杆40上，推杆40最终将轴向力作用到推杆40与车身本体200侧围的铰接处。由此，车身本体200侧围产生一个与轴向力相反的反作用力，并沿推杆40作用于车门100上，该反作用力不穿过车门100的旋转中心，因而与车门100旋转中心之间存在力臂，故会产生旋转力矩，以驱动车门100自动打开或关闭。同时，由于推杆40的铰接中心与车门100的旋转中心不一致，因此车门100的开启角度与推杆40的摆动角度有差别。上述的螺母丝杠式自动门开闭机构通过将推杆40与螺母推块 30铰接，以使推杆40可相对车门100摆动，从而保证整个机构的正常运行。本申请的螺母丝杠式自动门开闭机构整体结构简单，配合可靠，占用空间小，对原汽车车门结构改动较小，通用性较高；并且螺母丝杠配合传动效率高，采用较小的驱动装置10便可实现车门100的打开和关闭，从而使得该螺母丝杠式自动门开闭机构能够很好地满足小型化，轻量化的发展需求。
作为示例，螺母丝杠式自动门开闭机构还包括支架50，支架50与车门100固定连接，丝杠20的两端分别与支架50转动连接，驱动装置10固定于支架50上，驱动装置10与丝杠20传动连接。在本实施例中，通过设置支架50以便于驱动装置10及丝杠20的安装，从而可减小对车门100自身结构的改造，进一步提升通用性。具体地，丝杠20的两端可通过轴承或铜套与支架50转动连接，驱动装置10与丝杠20传动连接以可带动丝杠20转动。
作为示例，请参照图3，螺母推块30包括传动部31、滑动部32及铰接轴33，铰接轴33位于传动部31与滑动部32之间，铰接轴33的轴线垂直于所述丝杠20的轴线。传动部31套设于丝杠20上并与丝杠20螺旋传动，滑动部32与支架50滑动连接，以限制螺母推块30相对于丝杠20的轴线的转动。推杆40的第一端与铰接轴33铰接。可以理解，螺母推块30相对于丝杠20的轴线的转动还可以通过其他合适的结构限制，只要能够保证在丝杠20转动时，螺母推块30可沿着丝杠20做直线往复运动即可。
具体地，传动部31内设有螺旋线而与丝杠20螺旋传动，滑动部32与支架50之间可通过滑动结构实现滑动连接，例如，可在支架50上设有与丝杠20的轴线方向并行延伸的滑槽，滑动部32上设有与滑槽配合的滑块，滑槽和滑块的配合还能够限制螺母推块30相对于丝杠20的轴线的转动。推杆40的第一端套接于铰接轴33上，使得推杆40可相对于铰接轴22摆动。驱动装置10驱动丝杠20转动，以带动传动部31沿丝杠20做直线运动，进而在铰接轴33的作用下推动推杆40运动，且推杆40可进行摆动调整。滑动部32与支架50的滑动连接，还可保证螺母推块30及推杆40的运动平稳性以及准确性。该螺母丝杠式传动机构整体结构紧凑，占用空间较小，且配合可靠，具有较高的传动效率。
作为示例，驱动装置10包括驱动电机11及传动结构12，驱动电机11的输出轴的轴线与丝杠20的轴线相平行，传动结构12将驱动电机11的输出轴与丝杠20传动连接。具体地，驱动电机11水平放置于丝杠20的上侧或下侧，驱动电机11的输出轴的轴线与丝杠20的轴线相平行，传动结构12将驱动电机11的输出轴与丝杠20传动连接而可传递扭矩。作为示例，传动结构12可为齿轮传动机构或同步带传动机构等。作为示例，参见图3，驱动电机11和丝杠20位于传动结构12的同一侧，使得驱动电机11和丝杠20并排设置，如此， 在保证驱动电机11与丝杠20之间正常传动的同时，还可有效减小驱动装置10在丝杠20的轴线方向(也即车门横向或车门水平方向)上的占用空间。
作为示例，传动结构12为两级齿轮传动机构，其包括第一传动齿轮121及第二传动齿轮122，第一传动齿轮121与驱动电机11的输出轴固定连接，第二传动齿轮122与丝杠20固定连接，第一传动齿轮121与第二传动齿轮122啮合配合。通过第一传动齿轮121与第二传动齿轮122的啮合来传递扭矩，使得传动结构12的结构简单，配合可靠。当然，在其他示例中，传动结构12还可以为多级(多于两级)齿轮传动机构，可以理解，传动机构12的动力输入端与驱动电机11的输出轴固定连接，传动机构12的动力输出端与丝杠20固定连接，实现扭矩从驱动电机11到丝杠20的传递。
作为示例，驱动装置10还可以包括制动器13和/或离合器14，制动器13和/或离合器14设于驱动电机11与传动结构12之间。
通过在驱动电机11与传动结构12之间设置制动器13，当驱动电机11停止驱动时，制动器13抱死，依靠制动器13的摩擦力矩，可保证车门100悬停在当前位置，从而有效避免车门100在打开后，因惯性作用或者其他原因而无法保持在当前位置，从而影响用户使用体验。当驱动电机11带动丝杠20回转时，制动器13松开，以使车门100可正常转动。为了达到较好的运行效果以及人机工程效果，制动器13优选采用电磁制动器，当然，也可使用其他形式的制动器或摩擦装置，例如可采用弹簧制动器。需要说明的是，在其他示例中，也可以取消制动器13和离合器14，例如可以利用电机反接制动提供车门悬停动力，或者利用电机静态阻力保持车门的悬停。
此外，由于驱动电机11内部的摩擦，导致在手动开关门时需克服此摩擦才能使丝杠20回转，即需要克服阻力才能手动使车门100打开或关闭，影响用户体验。为达到更好的人机工程效果，在驱动电机11与制动器13之间设置离合器14，当电动开关门时，离合器14处于接合状态以传递驱动力。当需要进入手动开关门模式时，离合器14处于分离状态，可手动轻松的将车门100打开或关闭。其中，离合器14可采用体积较小的“机械式单向传动离合器”，也可采用其他类型离合器。
作为示例，推杆40上设有止挡部41，止挡部41用于对车门100的转动进行限位。具体地，推杆40上设有凸台状的止挡部41，当车门100打开到最大角度时，止挡部41与车门100自身结构或支架50相抵触，如图2所示，限制了车门100的继续打开，起到了保护车门铰链101、螺母推块30、丝杠20的作用，避免车门100开度过大而对车门铰链101、螺母推块30、丝杠20造成冲击。
本申请还提出一种汽车自动门，该汽车自动门包括如上所述的螺母丝杠式自动门开闭机构，该螺母丝杠式自动门开闭机构的具体结构可参照上述实施例，由于本汽车自动门采用了上述实施例的所有技术方案，因而至少包括上述实施例所带来的所有有益效果，在此不再一一赘述。
下面结合图5及图6，以主驾驶门为例，对应用有本申请第一实施例的螺母丝杠式自动门开闭机构的汽车自动门的打开和关闭动作进行详细描述。
请参照图5，当驱动装置10接收到ECU指令“开启车门”时，驱动装置10驱动丝杠20绕第一方向转动，丝杠20与螺母推块30组成的螺母丝杠副产生指向推杆40与车身本体200侧围的铰链方向的轴向力。此轴向力经螺母推块30、推杆40最终作用到推杆铰链42(推杆40与车身本体200侧围通过推杆铰链42铰接)上。由于力的相互作用关系，车身本体200侧围产生一个反作用推力，通过推杆40作用到车门100上。因通过推杆40传递的轴向力与车门铰链101之间有力臂，故会产生旋转力矩，驱动车门100旋转开启。在车门100开启过程中，螺母推块30沿丝杠20往车头方向进行直线运动；同时推杆40绕两端铰链摆动，使得机构能顺畅运行。
请参照图6，当驱动装置10接收到ECU指令“关闭车门”时，驱动装置10驱动丝杠20绕第二方向转动，第二方向与上述第一方向相反。丝杠20与螺母推块30组成的螺母丝杠副产生背向推杆40与车身本体200侧围的铰链方向的轴向力，车身本体200侧围产生一个反作用拉力，该反作用拉力对车门100产生旋转力矩，从而驱动车门100旋转关闭。
请参照图7至图9，示出了螺母丝杠式自动门开闭机构的第二实施例，其与上述第一实施例的主要不同之处在于：为实现螺母推块30沿丝杠20做直线往复运动所采用的具体结构，以及为控制车门的悬停位置而采用的具体实施方式。
本实施例中，螺母推块30利用自身形状与支架50形成滑动配合，使螺母推块30可以沿丝杠20的轴向做直线往复运动，而不会相对于丝杠20的轴线转动。具体地，螺母推块30的外周表面配置有第一止转面301，支架50配置有第二止转面510，第一止转面301与第二止转面510滑动配合，以限制螺母推块30的转动。作为示例，螺母推块30上配置有两个间隔开的第一止转面301，两个第一止转面301优选地关于图8中的纵向轴线M-M对称设置，支架50上配置有两个第二止转面510，两个第二止转面510与两个第一止转面301一一对应。该种配置有助于螺母推块30的平稳运动。作为示例，支架50包括壳体部51，第二止转面510形成于壳体部51的面对螺母推块30的内表面上。
另外，为提高车门悬停极限，同时降低螺母丝杠式自动门开闭机构的电功率功耗，本 实施例中，在驱动装置10中加入旋转阻尼器15，旋转阻尼器15利用自身的阻尼使车门100保持悬停。该阻尼器15可为摩擦片式机械旋转阻尼器、液压旋转阻尼器或者其他摩擦装置。阻尼器15可以设置在驱动电机11与传动结构12之间、或传动结构12内部、或丝杠20与传动结构12之间，最终限制丝杠20的转动即可。作为示例，参见图7和图9，本实施例中旋转阻尼器15设于驱动电机11和传动结构12之间。
结合有关技术可知，旋转阻尼器15通常设置有转动部、固定部，其中固定部保持不动，转动部和扭矩传递轴(例如，驱动电机11的输出轴，或传动结构12的动力输入轴，或传动机构12的动力输出轴等)不可相对转动地连接。转动部与固定部之间摩擦连接。例如，摩擦片式机械旋转阻尼器中利用其互相摩擦的摩擦片，或者，液压旋转阻尼器利用其内部液压油的低流动阻力特性，使得转动上述的转动部时需克服旋转阻尼器转动部与固定部之间的摩擦力，此摩擦力限制了推杆40、丝杆20的运动，从而保证了车门的悬停。
需要说明的是，在不冲突的情况下，本申请第二实施例的其他方面的结构可以和本申请第一实施例的其他申请的结构相同或相似。例如，推杆40可以具有弯曲部，推杆40具有止挡部41，传动结构12为齿轮传动机构或者其他传动机构等等。应用有本申请第二实施例的螺母丝杠式自动门开闭机构的汽车自动门的打开和关闭过程和上述第一实施例的描述基本相同，在此不再赘述。
本申请还提出一种汽车，该汽车包括如上所述的汽车自动门，该汽车自动门包括如上的螺母丝杠式自动门开闭机构，该螺母丝杠式自动门开闭机构的具体结构可参照上述实施例，由于本汽车自动门采用了上述实施例的所有技术方案，因而至少包括上述实施例所带来的所有有益效果，在此不再一一赘述。可以理解，基于车门的重量、数量等因素，在一辆汽车中可以使用多套本申请的螺母丝杠式自动门开闭机构。
以上所述实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
以上所述实施例仅表达了本申请的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对申请专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本申请构思的前提下，还可以做出若干变形和改进，这些都属于本申请的保护范围。因此，本申请专利的保护范围应以所附权利要求为准。

Claims (16)

  1. 一种螺母丝杠式自动门开闭机构，其特征在于，包括驱动装置(10)、丝杠(20)、螺母推块(30)及推杆(40)；所述驱动装置(10)与车门(100)固定连接，所述丝杠(20)可转动地安装于所述车门(100)上，所述螺母推块(30)套设于所述丝杠(20)上，所述推杆(40)的第一端与所述螺母推块(30)铰接，所述推杆(40)的第二端与车身本体(200)铰接，所述驱动装置(10)能够驱动所述丝杠(20)转动，以使所述螺母推块(30)及所述推杆(40)沿所述丝杠(20)做往复直线运动，进而使得所述推杆(40)驱动所述车门(100)相对所述车身本体(200)打开或关闭。
  2. 根据权利要求1所述的螺母丝杠式自动门开闭机构，其特征在于，还包括支架(50)，所述支架(50)与所述车门(100)固定连接，所述丝杠(20)的两端分别与所述支架(50)转动连接，所述驱动装置(10)固定于所述支架(50)上，所述驱动装置(10)与所述丝杠(20)传动连接。
  3. 根据权利要求2所述的螺母丝杠式自动门开闭机构，其特征在于，所述螺母推块(30)包括传动部(31)、滑动部(32)及铰接轴(33)；所述铰接轴(33)位于所述传动部(31)与所述滑动部(32)之间，所述铰接轴(33)的轴线垂直于所述丝杠(20)的轴线；所述传动部(31)套设于所述丝杠(20)上并与所述丝杠(20)螺旋传动，所述滑动部(32)与所述支架(50)滑动连接，所述推杆(40)的第一端与所述铰接轴(33)铰接。
  4. 根据权利要求2所述的螺母丝杠式自动门开闭机构，其特征在于，所述驱动装置(10)包括驱动电机(11)及传动结构(12)，所述驱动电机(11)的输出轴轴线与所述丝杠(20)的轴线相平行，所述传动结构将所述驱动电机的输出轴与所述丝杠传动连接。
  5. 根据权利要求4所述的螺母丝杠式自动门开闭机构，其特征在于，所述驱动电机(11)与所述丝杠(20)位于所述传动机构(12)的同一侧。
  6. 根据权利要求4所述的螺母丝杠式自动门开闭机构，其特征在于，所述传动结构(12)为齿轮传动机构，所述传动机构(12)的动力输入端与所述驱动电机(11)的输出轴固定连接，所述传动机构(12)的动力输出端与所述丝杠固定连接。
  7. 根据权利要求4所述的螺母丝杠式自动门开闭机构，其特征在于，所述驱动装置(10)还包括制动器(13)和/或离合器(14)，所述制动器(13)和/或所述离合器(14)设于所述驱动电机(11)与所述传动结构(12)之间。
  8. 根据权利要求1至7任意一项所述的螺母丝杠式自动门开闭机构，其特征在于，所述推杆(40)具有弯曲部。
  9. 根据权利要求1至7任意一项所述的螺母丝杠式自动门开闭机构，其特征在于，所述推杆(40)上设有止挡部(41)，所述止挡部(41)用于对所述车门(100)的转动进行限位。
  10. 根据权利要求2所述的螺母丝杠式自动门开闭机构，其特征在于，所述螺母推块(30)的外周表面配置有第一止转面(301)，所述支架(50)配置有第二止转面(510)，所述第一止转面(301)与所述第二止转面(510)滑动配合，以限制所述螺母推块(30)的转动。
  11. 根据权利要求10所述的螺母丝杠式自动门开闭机构，其特征在于，所述螺母推块(30)与所述推杆(40)的第一端通过球铰连接。
  12. 根据权利要求10所述的螺母丝杠式自动门开闭机构，其特征在于，所述支架(50)包括壳体部(51)，所述第二止转面(510)形成于所述壳体部(51)的内表面上。
  13. 根据权利要求4所述的螺母丝杠式自动门开闭机构，其特征在于，所述驱动装置(10)还包括旋转阻尼器(15)，所述旋转阻尼器(15)利用自身的阻尼使所述车门(100)保持悬停。
  14. 根据权利要求13所述的螺母丝杠式自动门开闭机构，其特征在于，所述旋转阻尼器(15)设于所述驱动电机(11)与所述传动结构(12)之间。
  15. 一种汽车自动门，其特征在于，包括如权利要求1至14任意一项所述的螺母丝杠式自动门开闭机构。
  16. 一种汽车，其特征在于，包括如权利要求15所述的汽车自动门。
PCT/CN2019/099114 2018-12-05 2019-08-02 螺母丝杠式自动门开闭机构、汽车自动门和汽车 WO2020113983A1 (zh)

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US17/049,295 US11466503B2 (en) 2018-12-05 2019-08-02 Nut leadscrew type automatic door opening and closing mechanism, automobile automatic door and automobile
CA3121663A CA3121663C (en) 2018-12-05 2019-08-02 Nut and lead screw type opening and closing mechanism for automatic door, automatic vehicle door, and vehicle
JP2021532075A JP7209090B2 (ja) 2018-12-05 2019-08-02 ナット・リードスクリュー式自動ドア開閉機構、それを含む自動車の自動ドア、及び自動車
EP19892366.6A EP3892808A4 (en) 2018-12-05 2019-08-02 LEAD SCREW AND NUT TYPE OPENING AND CLOSING MECHANISM FOR AN AUTOMATIC DOOR, AUTOMATIC VEHICLE DOOR AND VEHICLE
AU2023202225A AU2023202225B2 (en) 2018-12-05 2023-04-11 Nut and lead screw type opening and closing mechanism for automatic door, automatic vehicle door, and vehicle

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