CN216517504U

CN216517504U - Lower back of body door switching device and car

Info

Publication number: CN216517504U
Application number: CN202122912638.0U
Authority: CN
Inventors: 王少亚
Original assignee: Zhejiang Geely Holding Group Co Ltd; Zhejiang Zeekr Intelligent Technology Co Ltd
Current assignee: Zhejiang Geely Holding Group Co Ltd; Zhejiang Zeekr Intelligent Technology Co Ltd
Priority date: 2021-11-25
Filing date: 2021-11-25
Publication date: 2022-05-13
Anticipated expiration: 2031-11-25

Abstract

The utility model provides a lower back door opening and closing device and an automobile, which relate to the technical field of automobile back doors and comprise the following components: the mounting bracket is fixedly connected with the vehicle body framework; the rotating arm is arranged in the lower back door and is rotationally connected with the mounting bracket; the driving component is arranged inside the lower back door, is in transmission connection with the rotating arms, comprises a motor and a transmission structure connected between the motor and the rotating arms, and is used for converting the rotary motion output by the motor into the opening and closing motion of the rotating arms to realize the reciprocating motion of the lower back door. The utility model solves the problems of complex structure and higher cost of the electric opening and closing device for the automobile lower back door in the prior art, simplifies the structure, reduces the production cost and simultaneously promotes the integration among the parts of the automobile lower back door.

Description

Lower back of body door switching device and car

Technical Field

The utility model relates to the technical field of automobile backdoors, in particular to a lower backdoor opening and closing device and an automobile.

Background

Along with the development of automobile intellectualization, the requirement of consumers on the automation degree of automobile lifting is higher and higher, and the requirements of the consumers on the functions of the automobile at present can not be met in a mode that the backdoor of the automobile needs to be manually opened or closed.

Most of the vehicle types on the market are conventional back-lifting backdoors, the space of the back part after static opening is small, and the vehicle is not suitable for outdoor leisure application scenes; the back door is opened up and down in mass production at present, manual opening is adopted mostly, operation is not convenient enough, and certain physical strength is required to be consumed; at present, in the existing automobile model of the electric opening lower back door part, the metal plate inner cavity is adopted to arrange the electric support rods, the electric support rod driving conversion mechanism drives the hinge to rotate, the opening and closing function of the back door is realized, and the scheme is complex to realize.

As described, there is a need for an improved electric opening and closing device for a lower back door of an automobile in the related art.

SUMMERY OF THE UTILITY MODEL

In view of the above disadvantages of the prior art, an object of the present invention is to provide a lower back door opening and closing device and an automobile, which are used to solve the problems of complicated structure and high cost of the electric opening and closing device for the lower back door of the automobile in the prior art.

To achieve the above and other related objects, the present invention provides a lower back door opening and closing apparatus, comprising: the mounting bracket is fixedly connected with the vehicle body framework; the rotating arm is arranged inside the lower back door and is rotationally connected with the mounting bracket; the driving component is arranged inside the lower back door, is in transmission connection with the rotating arms, comprises a motor and a transmission structure connected between the motor and the rotating arms, and is used for converting the rotary motion output by the motor into the opening and closing motion of the rotating arms to realize the reciprocating motion of the lower back door.

In an embodiment of the present invention, a mounting box is fixed inside the lower back door, and the rotating arm and the driving member are fixed inside the lower back door through the mounting box.

In an embodiment of the present invention, the transmission structure includes: the worm is coaxially arranged in the rotating arm in a penetrating manner, and the worm is rotationally connected with the rotating arm through a bearing; and the worm wheel is coaxially fixed with the output shaft of the motor and is meshed with the worm.

In an embodiment of the present invention, the driving part includes: and the speed reducer is fixed on the mounting box, and an input shaft of the speed reducer is coaxially fixed with the worm.

In an embodiment of the present invention, the output shaft of the speed reducer is inserted through the outer side of the lower back door and is rotatably connected to the mounting bracket.

In an embodiment of the present invention, a mounting slot is formed on the mounting bracket, and the output shaft of the speed reducer is disposed in the mounting slot and rotatably connected thereto by a pin.

The utility model also provides an automobile which comprises a body structure and the lower back door opening and closing device arranged on the body structure.

In an embodiment of the present invention, the vehicle body structure includes: a vehicle body frame; the upper back door is rotatably connected to the vehicle body framework and is positioned at the tail of the vehicle; and the lower back door is rotatably connected to the automobile body framework through the lower back door opening and closing device and is combined with the upper back door to seal the automobile back box.

In an embodiment of the utility model, two lower back door opening and closing devices are arranged on the vehicle body framework, and the two lower back door opening and closing devices respectively correspond to two ends of the lower back door.

In an embodiment of the present invention, the opening angle of the back door is between 5 to 90 degrees, and the output torque of the motor is gradually increased along with the increase of the opening angle of the back door; the moment arm value of the rotating wall is smaller in change amplitude along with the increase of the opening angle of the lower back door.

As described above, the lower back door opening and closing device and the automobile of the present invention have the following beneficial effects:

1. by adopting a mode of directly driving by the rotating arm, the structure of the conventional switch device is simplified, the weight is reduced, and the manufacturing cost is reduced.

2. Inside through setting up back of the body door down with rotor arm and driver part, can effectively release the inner space of back of the body case, promote integrating between the back of the body door spare part under the car.

Drawings

FIG. 1 is an isometric view of a lower back door opening and closing device according to one embodiment of the present invention;

FIG. 2 is a schematic view of a lower back door opening and closing device according to an embodiment of the present invention with a rotating arm in a closed state;

FIG. 3 is a schematic view of a lower back door opening and closing device according to an embodiment of the present invention, wherein the rotating arm is in an open state;

FIG. 4 illustrates a partial side view of an automobile in accordance with one embodiment of the present invention;

FIG. 5 is a diagram showing the relationship between the arm of force of the swing arm, the output torque of the motor and the opening angle of the back door according to an embodiment of the present invention;

FIG. 6 is a schematic diagram of a back door control of an automobile according to an embodiment of the present invention.

Description of the element reference numerals

100. A lower back door opening and closing device; 110 mounting a bracket; 111. installing a slot position; 120. a rotating arm; 121. a worm; 130. a drive member; 131. a motor; 132. a worm gear; 133. a speed reducer; 140. mounting a box; 150. a pin shaft; 200. a vehicle body structure; 210. a vehicle body frame; 220. an upper back door; 230. a lower back door.

Detailed Description

The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The utility model is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict. It is also to be understood that the terminology used in the examples is for the purpose of describing particular embodiments only, and is not intended to limit the scope of the present invention. Test methods in which specific conditions are not specified in the following examples are generally carried out under conventional conditions or under conditions recommended by the respective manufacturers.

Please refer to fig. 1 to 6. It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions under which the present invention can be implemented, so that the present invention has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.

Referring to fig. 1, 2 and 3, the present invention provides a lower back door opening and closing apparatus, which includes a mounting bracket 110, a rotating arm 120 and a driving member 130. Wherein, the mounting bracket 110 is fixed at the tail of the vehicle body frame 210 for mounting the lower back door 230; the rotating arm 120 is installed inside the back door 230 and is rotatably connected with the mounting bracket 110; the driving part 130 is disposed inside the back door 230 and is in transmission connection with the rotating arm 120 to realize the reciprocating motion of the back door 230.

Referring to fig. 1, 2 and 3, the mounting box 140 is fixed inside the back door 230, and the rotating arm 120 and the driving part 130 are both fixedly connected to the mounting box 140 and are placed inside the back door 230, and the mounting box 140 provides conditions for mounting the rotating arm 120 and the driving part 130 and ensures the mounting stability of the rotating arm 120 and the driving part 130. In addition, a worm 121 is coaxially arranged in the rotating arm 120 in a penetrating manner, the worm 121 is rotatably connected with the rotating arm 120 through a bearing, and one end of the worm 121 extending out of the rotating arm 120 is in transmission connection with the driving part 130.

Referring to fig. 1, 2 and 3, in the present embodiment, the driving part 130 includes a motor 131 and a transmission structure. Wherein, the transmission structure is used for converting the rotary motion output by the motor 131 into the opening and closing motion of the rotating arm 120, and comprises a worm 121, a worm wheel 132 and a speed reducer 133; the motor 131 is fixed on the mounting box 140, the output shaft of the motor 131 is coaxially fixed with the worm wheel 132, and the worm wheel 132 is meshed with the worm 121 in the rotating arm 120; in addition, the reducer 133 is fixed on the mounting box 140, an input shaft of the reducer 133 is coaxially fixed with one end of the worm 121 extending out of the rotating arm 120, and an output shaft of the reducer 133 is rotatably connected with the mounting bracket 110 to realize the rotation of the rotating arm 120 relative to the mounting bracket 110. It should be noted that, in the present invention, the worm wheel 132 on the motor 131 drives the worm 121 to rotate, the worm 121 transmits the driving force to the speed reducer 133, and the speed reducer 133 changes the rotation direction of the power through an internal transmission structure, so that the rotation direction of the output shaft of the speed reducer 133 is perpendicular to the rotation direction of the worm 121.

Referring to fig. 1, 2 and 3, in the present embodiment, an output shaft of the speed reducer 133 passes through the lower back door 230 and is located at an outer side of the lower back door 230, and the output shaft of the speed reducer 133 is rotatably connected to the mounting bracket 110; it should be noted that, a mounting slot 111 is formed on the mounting bracket 110, and an output shaft of the speed reducer 133 is disposed in the mounting slot 111 and is rotatably connected to the mounting bracket 110 through a pin 150. The connection mode of the pin 150 can ensure a certain degree of freedom of the rotating arm 120 on one hand and the connection stability on the other hand.

Referring to fig. 4, the present invention also provides an automobile comprising a body structure 200 and the back door opening and closing device 100 mounted on the body structure 200 as described above. The vehicle body structure 200 includes, among other things, a vehicle body frame 210, an upper tailgate 220, and a lower tailgate 230. The upper back door 220 is rotatably connected to the vehicle body frame 210 and located at the rear of the vehicle, and it should be noted that the opening or closing of the upper back door 220 is realized in an electric control manner and is synchronously executed with the opening of the lower back door 230; the lower back door 230 is rotatably connected to the body frame 210 through the lower back door opening and closing device 100, and is combined with the upper back door 220 to close the trunk of the vehicle.

Referring to fig. 4, in the present embodiment, two lower back door opening and closing devices 100 are disposed on the vehicle body frame 210, and the two lower back door opening and closing devices 100 respectively correspond to two ends of the lower back door 230 in the length direction and are located at the connection position of the lower back door 230 and the vehicle body frame 210, so as to realize the rotational connection between the lower back door 230 and the vehicle body frame 210; it should be noted that the rotation angle of the back door 230 is between 0 to 90 degrees, and the torque output by the motor 131 is gradually increased as the opening angle of the back door 230 is increased, and the torque output by the motor 131 reaches the peak value when the rotation angle of the back door 230 reaches 90 degrees.

In actual operation, a user can control the opening or closing of the upper back door 220 and the lower back door 230 through the vehicle-mounted ECU, when the user needs to open the upper back door 220 and the lower back door 230, an instruction can be sent to the vehicle-mounted ECU through the central control touch screen, the mobile phone or the back door microswitch, and the vehicle-mounted ECU receives the instruction and sends a control instruction to the lower back door opening and closing device 100, so that the lower back door opening and closing device 100 drives the upper back door 220 and the lower back door 230 to move, and the back door can be freely opened or closed according to the requirements of the user.

Referring to fig. 5, in the present embodiment, as the opening angle of the back door 230 changes, the corresponding moment arm value of the rotating arm 120 and the output torque of the motor 131 also change; when the motor 131 is started, the torque output by the motor 131 is between 40 and 45N, but when the opening angle of the back door 230 is about 5 degrees, the corresponding torque output by the motor 131 is between 5 and 10N; then, as the opening angle of the back door 230 is increased, the output torque of the corresponding motor 131 is increased linearly.

For example, when the opening angle of the back door 230 is about 10 degrees, the output torque of the corresponding motor 131 is between 20 and 25N; when the opening angle of the back door 230 is about 15 degrees, the output torque of the corresponding motor 131 is between 45 and 55N; when the opening angle of the back door 230 is about 20 degrees, the output torque of the corresponding motor 131 is between 70 and 80N; when the opening angle of the back door 230 is about 25 degrees, the output torque of the corresponding motor 131 is between 90 and 100N; when the opening angle of the back door 230 is about 30 degrees, the output torque of the corresponding motor 131 is 115-125N; when the opening angle of the back door 230 is about 35 degrees, the output torque of the corresponding motor 131 is between 135 and 145N; when the opening angle of the back door 230 is about 40 degrees, the output torque of the corresponding motor 131 is between 155 and 165N; when the opening angle of the back door 230 is about 45 degrees, the output torque of the corresponding motor 131 is between 180 and 185N; when the opening angle of the back door 230 is about 50 degrees, the output torque of the corresponding motor 131 is 220-225N; when the opening angle of the back door 230 is about 55 degrees, the output torque of the corresponding motor 131 is 235-245N; when the opening angle of the back door 230 is about 60 degrees, the output torque of the corresponding motor 131 is 245-255N; when the opening angle of the back door 230 is about 65 degrees, the output torque of the corresponding motor 131 is 270-280N; when the opening angle of the back door 230 is about 70 degrees, the output torque of the corresponding motor 131 is between 295 and 305N; when the opening angle of the back door 230 is about 75 degrees, the output torque of the corresponding motor 131 is between 320 and 330N; when the opening angle of the back door 230 is about 80 degrees, the output torque of the corresponding motor 131 is 350-360N; when the opening angle of the back door 230 is about 85 degrees, the output torque of the corresponding motor 131 is 380-390N; when the opening angle of the back door 230 is about 90 degrees, the output torque of the corresponding motor 131 is between 415 and 425N.

However, the value of the moment arm of the rotating arm 120 changes slightly in the opening process of the back door 230, specifically, the value is basically the same when the back door 230 is initially opened and the back door 230 is completely opened, and the value of the moment arm of the rotating arm 120 reaches the peak value when the opening angle of the back door 230 is between 40 and 45.

Referring to fig. 6, in an actual operation process, a driver may press a switch of the back door 230 on a center console in the vehicle, and the switch of the back door 230 transmits a start signal to a processor (ECU), so that the processor controls an output shaft of a motor in the driving part to rotate forward or backward, thereby implementing an opening or closing motion of the back door 230.

In summary, the rotating arm 120 is arranged inside the lower back door 230, and the rotating arm 120 can rotate along the axial direction perpendicular to the pin shaft 150 by the driving of the motor 131 and the reducer 133, so as to realize the reciprocating opening and closing of the lower back door 230; the present invention simplifies the structure of the conventional lower back door opening and closing device 100, reduces the weight, and reduces the manufacturing cost by adopting the mode of directly driving by the rotating arm 120; in addition, the rotating arm 120 and the driving part 130 are arranged inside the lower back door 230, so that the internal space of the back box can be effectively released, and the integration among various parts of the automobile is improved. Therefore, the utility model effectively overcomes various defects in the prior art and has high industrial utilization value.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the utility model. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. A lower back door opening and closing apparatus, comprising:

the mounting bracket is fixedly connected with the vehicle body framework;

the rotating arm is arranged inside the lower back door and is rotationally connected with the mounting bracket;

the driving component is arranged inside the lower back door, is in transmission connection with the rotating arms, comprises a motor and a transmission structure connected between the motor and the rotating arms, and is used for converting the rotary motion output by the motor into the opening and closing motion of the rotating arms to realize the reciprocating motion of the lower back door.

2. The lower back door opening and closing device according to claim 1, wherein: the lower back door is internally fixed with a mounting box, and the rotating arm and the driving part are fixed inside the lower back door through the mounting box.

3. The lower back door opening and closing apparatus according to claim 2, wherein: the transmission structure includes:

the worm is coaxially arranged in the rotating arm in a penetrating manner, and the worm is rotationally connected with the rotating arm through a bearing;

and the worm wheel is coaxially fixed with the output shaft of the motor and is meshed with the worm.

4. The lower back door opening and closing apparatus according to claim 3, wherein: the driving part further includes:

and the speed reducer is fixed on the mounting box, and an input shaft of the speed reducer is coaxially fixed with the worm.

5. The lower back door opening and closing apparatus according to claim 4, wherein: the output shaft of the speed reducer penetrates through the outer side of the lower back door and is rotatably connected with the mounting bracket.

6. The lower back door opening and closing device according to claim 5, wherein: the mounting bracket is provided with a mounting groove, and an output shaft of the speed reducer is arranged in the mounting groove and is rotationally connected with the mounting groove through a pin shaft.

7. An automobile comprising a body structure and a lower back door opening and closing device as claimed in any one of claims 1 to 6 mounted on the body structure.

8. The automobile of claim 7, wherein: the vehicle body structure includes:

a vehicle body frame;

the upper back door is rotatably connected to the vehicle body framework and is positioned at the tail of the vehicle;

and the lower back door is rotatably connected to the automobile body framework through the lower back door opening and closing device and is combined with the upper back door to seal the automobile back box.

9. The automobile of claim 8, wherein: the lower back door opening and closing devices are arranged on the vehicle body framework, and the two lower back door opening and closing devices respectively correspond to two ends of the lower back door.

10. The automobile of claim 8, wherein: the opening angle of the lower back door is 5-90 degrees, and the output torque of the motor is gradually increased along with the increase of the opening angle of the lower back door; the moment arm value of the rotating arm changes along with the increase of the opening angle of the lower back door.