Back door closing auxiliary device and vehicle

Abstract

The invention provides a back door closing auxiliary device and a vehicle, the back door closing auxiliary device comprises a reel, an auxiliary drawstring and a rotation driving part, the rotation driving part is arranged on a back door, the reel is driven by the rotation driving part to rotate, one end of the auxiliary drawstring is connected to the reel, and when the rotation driving part drives the reel to rotate, the auxiliary drawstring is driven by the rotation driving part to rotate. When the back door is opened, the released auxiliary drawstring can be pulled to drive the back door to turn over and be closed. According to the auxiliary device for closing the back door, a short person can close the back door by pulling the auxiliary drawstring, and when the auxiliary drawstring is in the rolling state, the occupied space of the trunk is small, and storage of articles in the trunk is not affected.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle parts, and in particular to a tailgate closing auxiliary device. Meanwhile, the present invention also relates to a vehicle provided with the tailgate closing auxiliary device. Background Art

[0002] With the progress and development of society, vehicles have become an indispensable means of transportation in people's daily lives, and people have increasingly higher requirements on the functions and performance of vehicles.

[0003] At present, many family members have driver's licenses. Generally, when a family buys a car, family members can take turns driving it, which means that the driver of a car needs to be changed frequently. As for the back door of a vehicle, depending on the model, some back doors can be opened and closed electrically through a control switch, while some models can be opened electrically but need to be closed manually.

[0004] Vehicles with electrically opened and manually closed tailgates may be inconvenient to use due to differences in height among family members. For example, in SUV models, the lower edge of the tailgate is too high after opening, and shorter family members have difficulty reaching the tailgate, making it inconvenient to close the tailgate. Summary of the invention

[0005] In view of this, the present invention aims to provide a tailgate closing auxiliary device to facilitate people with shorter heights to close the tailgate.

[0006] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0007] A tailgate closing auxiliary device comprises a rotary drive unit arranged on the tailgate, a reel driven to rotate by the rotary drive unit, and an auxiliary pull belt with one end connected to the reel;

[0008] When the rotary drive unit drives the reel to rotate, the auxiliary drawstring can be rolled up or released, and when the tailgate is opened, the auxiliary drawstring that is pulled and released can drive the tailgate to flip and close.

[0009] Further, the back door has a back door trim panel connected to the back door sheet metal facing the vehicle interior;

[0010] The rotary drive unit and the reel are both located between the tailgate sheet metal and the tailgate trim, and the tailgate trim is provided with a clearance hole for the auxiliary pull strap to pass through.

[0011] Furthermore, the rotary drive unit and the reel are both arranged on the tailgate trim.

[0012] Furthermore, the rotation driving unit includes a motor and a power transmission mechanism, and the motor drives the reel to rotate through the power transmission mechanism.

[0013] Further, the power transmission mechanism includes a first rotating wheel, a second rotating wheel and a transmission belt;

[0014] The first rotating wheel is arranged on the output shaft of the motor, the second rotating wheel is arranged on the reel, and the transmission belt is drivingly connected between the first rotating wheel and the second rotating wheel.

[0015] Furthermore, a counterweight block is provided on the auxiliary drawstring, and the auxiliary drawstring after being released is hung on the tailgate through the counterweight block.

[0016] Furthermore, the auxiliary drawstring is passed through a through hole on the counterweight block, and the counterweight block can slide along the auxiliary drawstring.

[0017] Furthermore, relative to the end of the auxiliary drawstring connected to the reel, the other end of the auxiliary drawstring is connected to the tailgate.

[0018] Compared with the prior art, the present invention has the following advantages:

[0019] The tailgate closing auxiliary device described in the present invention drives the reel to rotate by a rotary drive unit, so that the auxiliary pull strap can be rolled up on the reel. After the auxiliary pull strap is released, it can be pulled by a shorter person to close the tailgate, thereby improving the versatility of the vehicle. After the auxiliary pull strap is rolled up, it occupies less space in the trunk and does not affect the storage of items in the trunk, thereby having good practicality.

[0020] In addition, the rotary drive unit and the reel are arranged between the tailgate sheet metal and the tailgate trim, which is beneficial to improving the aesthetics of the interior of the vehicle's tailgate. The rotary drive unit and the reel are both arranged on the tailgate trim, which is beneficial for the auxiliary pull strap to smoothly enter and exit the clearance hole on the tailgate trim.

[0021] In addition, a motor and a power transmission mechanism are provided. The motor can use existing standard parts with low cost. The power transmission mechanism includes a first rotating wheel, a second rotating wheel and a transmission belt with a simple structure, which is conducive to adjusting the winding and releasing speed of the auxiliary pull belt.

[0022] A counterweight is arranged on the auxiliary strap, which facilitates the released auxiliary strap to be smoothly hung on the tailgate during the release process of the auxiliary strap. A through hole is arranged on the counterweight, and the auxiliary strap is passed through the through hole, which helps to improve the reliability of the installation of the counterweight. Another object of the present invention is to provide a vehicle, wherein the tailgate closing auxiliary device as described above is arranged on the tailgate of the vehicle.

[0023] Further, the vehicle is provided with a controller, a control switch and a rear door lock sensor, and the controller is connected to the control switch, the rear door lock sensor and the rotary drive unit respectively; or,

[0024] The vehicle is provided with a control switch, and the control switch is connected to the rotation drive unit.

[0025] The vehicle described in the present invention and the aforementioned tailgate closing auxiliary device have the same beneficial effects as the prior art, which will not be described in detail herein.

[0026] In addition, the controller is respectively connected to the control switch, the tailgate lock sensor and the rotary drive unit, so that after the tailgate is opened, the auxiliary pull strap can be released and hung on the tailgate, and after the tailgate is closed, the auxiliary pull strap can be reeled in, thereby improving the convenience of using the tailgate closing auxiliary device. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0028] Figure 1 It is a structural schematic diagram of the back door closing auxiliary device in the application state according to the embodiment of the present invention;

[0029] Figure 2 for Figure 1 A magnified view of part A;

[0030] Figure 3 for Figure 1 A schematic diagram of the structure after the auxiliary pull belt is released from the reel;

[0031] Figure 4 It is a front view of the auxiliary pull belt being rolled up on the reel when the tailgate closing auxiliary device according to the embodiment of the present invention is in the application state;

[0032] Figure 5 A front view of the back door closing auxiliary device according to an embodiment of the present invention in an applied state after the auxiliary pull belt is released from the reel;

[0033] Figure 6 is a structural schematic diagram of the back door closing auxiliary device according to an embodiment of the present invention in another viewing angle when in application state;

[0034] Figure 7 For along Figure 6 Cross-sectional view along the BB axis.

[0035] Description of reference numerals:

[0036] 1. Reel; 2. Auxiliary drawstring; 3. Rotary drive unit; 4. Counterweight; 5. Tailgate trim; 6. Controller; 7. First mounting bracket; 8. Fixing unit; 9. Second mounting bracket;

[0037] 301, motor; 302, power transmission mechanism; 3021, first rotating wheel; 3022, second rotating wheel; 3023, transmission belt;

[0038] 901. Gap. DETAILED DESCRIPTION

[0039] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0040] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "back", etc. are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0041] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installation", "connection", "connection", and "connector" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

[0042] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0043] Embodiment 1

[0044] The present embodiment relates to a tailgate closing auxiliary device, which is installed on the tailgate of a vehicle to facilitate a shorter person to close the tailgate.

[0045] Based on the above design concept, an exemplary structure of the tailgate closing auxiliary device of this embodiment is as follows: Figures 1 to 3 As shown, in terms of overall structure, the tailgate closing auxiliary device mainly includes a reel 1 , an auxiliary pull belt 2 and a rotation drive unit 3 .

[0046] Specifically, the rotary drive unit 3 is provided on the back door, the reel 1 is connected to the rotary drive unit 3 in a transmission manner, and under the driving action of the rotary drive unit 3, the reel 1 can rotate relative to the back door, and can reel in or release the auxiliary drawstring 2. One end of the auxiliary drawstring 2 is connected to the reel 1, and when the back door is opened, the auxiliary drawstring 2 can be released and hung on the back door, and the auxiliary drawstring 2 released by pulling can drive the back door to flip and close.

[0047] As a preferred embodiment, the back door includes a back door sheet metal and a back door trim 5 disposed on the side of the back door sheet metal facing the vehicle interior, and the main structures of the back door sheet metal and the back door trim 5 can refer to the existing structures. The above-mentioned rotary drive unit 3 and the reel 1 are both located between the back door sheet metal and the back door trim 5, so as to improve the aesthetics of the interior of the vehicle trunk.

[0048] It should be noted that the rotating drive unit 3 and the reel 1 are both arranged between the back door sheet metal and the back door trim 5, and a clearance hole for the auxiliary pull strap 2 to pass through needs to be provided on the back door trim 5. As in this embodiment, relative to one end of the auxiliary pull strap 2 connected to the reel 1, the other end of the auxiliary pull strap 2 is connected to the back door, referring to Figure 6 and Figure 7 As shown, it is specifically installed on the tailgate trim 5 through the fixing portion 8 described below. At this time, there are two clearance holes on the tailgate trim 5, and the two clearance holes are arranged at a distance.

[0049] Reference Figure 4 and Figure 5 As shown, Figure 4 is a schematic diagram of the structure of the auxiliary drawstring 2 in a reeled state, Figure 5 It is a structural schematic diagram of the auxiliary drawstring 2 in a suspended state. When the tailgate is in an open state, the exposed portion of the auxiliary drawstring 2 is suspended on the tailgate in a "U" shape, and the two ends of the auxiliary drawstring 2 pass through two clearance holes from the outside and are respectively connected to the reel 1 and the fixing portion 8 located between the tailgate sheet metal and the tailgate trim 5.

[0050] In the present embodiment, the specific structure of the fixing portion 8 is not specifically limited. It is convenient for fixing to the tailgate trim 5 and can be conveniently connected to the auxiliary strap 2. For example, it may include a box body that is buckled on the tailgate trim 5, and a connector that is provided on the box body and connected to the auxiliary strap 2. In addition, the fixing portion 8 may also be made of rivets or screws.

[0051] It should also be noted that, in addition to arranging the rotating drive unit 3 and the reel 1 between the tailgate sheet metal and the tailgate trim 5, the rotating drive unit 3 and the reel 1 can also be arranged on the side of the tailgate trim 5 facing away from the tailgate sheet metal. However, this will occupy space in the trunk, which is not conducive to improving the aesthetics of the trunk interior.

[0052] It should also be noted that, in the above structure, relative to the end of the auxiliary strap 2 connected to the reel 1, the other end of the auxiliary strap 2 can also be connected to the back door, and it is set as a free end. In this case, only a clearance hole is set on the back door trim 5, and the free end of the auxiliary strap 2 can extend from the clearance hole and hang on the back door. Preferably, a blocking portion can also be connected to the free end to prevent the free end from entering the space between the back door sheet metal and the back door trim 5, so as to facilitate the smooth winding and release of the auxiliary strap 2.

[0053] Preferably, the blocking portion can also be made of a material with a certain weight to facilitate the auxiliary drawstring 2 to be hung on the tailgate after release, or it is also possible to provide a counterweight block 4 as described below. When a counterweight block 4 is provided, if the counterweight block 4 can slide along the auxiliary drawstring 2, the blocking portion here needs to prevent the counterweight block 4 from detaching from the auxiliary drawstring 2.

[0054] As a preferred embodiment, the rotating drive unit 3 and the reel 1 are both arranged on the rear door trim 5, and both are specifically arranged on the side of the rear door trim 5 facing the rear door sheet metal, so that the auxiliary pull strap 2 can smoothly enter and exit the give way hole on the rear door trim 5.

[0055] As a preferred embodiment, refer to Figure 4 and Figure 5 As shown, the rotation driving unit 3 includes a motor 301 and a power transmission mechanism 302. The motor 301 is connected to the reel 1 through the power transmission mechanism 302, and can drive the reel 1 to rotate. Here, the motor 301 can be an existing standard part, which is low in cost.

[0056] In a preferred embodiment, the motor 301 is mounted on the first mounting bracket 7, and the first mounting bracket 7 is mounted on the tailgate trim 5. The power transmission mechanism 302 includes a first rotating wheel 3021, a second rotating wheel 3022 and a transmission belt 3023, wherein the first rotating wheel 3021 is arranged on the output shaft of the motor 301, the second rotating wheel 3022 is arranged on the reel 1, and the transmission belt 3023 is transmission-connected between the first rotating wheel 3021 and the second rotating wheel 3022.

[0057] It should be pointed out here that the motor 301 is installed on the tailgate trim 5 with the aid of the first mounting bracket 7 in order to facilitate the arrangement of the power transmission mechanism 302 . In addition, in other embodiments, the motor 301 may also be directly installed on the tailgate trim 5 .

[0058] The power transmission mechanism 302 includes a first rotating wheel 3021, a second rotating wheel 3022 and a transmission belt 3023, and has a simple structure, which is conducive to adjusting the retraction and release speed of the auxiliary pull belt 2. In addition, the power transmission mechanism 302 can also adopt other structures that can transmit the power of the motor 301 to the reel 1, and the motor 301 can also adopt other power sources that can drive the reel 1 to rotate through the power transmission mechanism 302 or directly.

[0059] Reference Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the reel 1 is specifically mounted on the second mounting bracket 9. Here, the reel 1 is preferably rotatably mounted on the second mounting bracket 9 by means of a bearing. The second mounting bracket 9 is provided with a notch 901 for making way for the transmission belt 3023 described below, and the second mounting bracket 9 is mounted on the back door trim 5. In addition, the reel 1 can be directly connected to the output shaft of the motor 301. However, when the reel 1 is long, it is best to support the reel 1 with the help of a reel support structure to facilitate the smooth rotation of the reel 1.

[0060] In the tailgate closing auxiliary device of this embodiment, after the auxiliary drawstring 2 rotates with the reel 1 around the first circumferential direction, the auxiliary drawstring 2 is released and has a hanging state on the tailgate, and after the auxiliary drawstring 2 rotates with the reel 1 around the second circumferential direction, at least part of the auxiliary drawstring 2 is rolled up on the reel 1, and the first circumferential direction and the second circumferential direction are opposite. In this embodiment, the first circumferential direction and the second circumferential direction specifically refer to the directions of the reel 1 rotating forward and reversely around its own axial centerline, respectively.

[0061] As a preferred embodiment, a counterweight block 4 is provided on the auxiliary pull strap 2, which is made of a harder material with a certain weight, so as to hang the auxiliary pull strap 2 on the tailgate after being released. Such a configuration facilitates the auxiliary pull strap 2 to smoothly switch to a hanging state during the release process of the auxiliary pull strap 2.

[0062] In a preferred embodiment, a through hole is provided on the counterweight 4, and the auxiliary drawstring 2 is arranged through the through hole, and the counterweight 4 can slide along the auxiliary drawstring 2, which is conducive to improving the reliability of the installation of the counterweight 4 and does not affect the winding and release of the auxiliary drawstring 2. Here, the position of the through hole can be set to a structure that is easy to hold, so that the counterweight 4 can be used as a bracelet. Of course, a structure that is easy to hold by hand can also be set separately on the counterweight 4 to improve the comfort of pulling the auxiliary drawstring 2 by hand.

[0063] Preferably, the auxiliary strap 2 has a thinner cross-sectional thickness and a larger width, has better strength, and occupies less trunk space after being rolled up. In addition, the cross-sectional shape of the auxiliary strap 2 can also be set to other shapes. In this embodiment, the cross-sectional shape of the auxiliary strap 2 is not specifically limited, and the function of switching between the hanging state and the rolled-up state in this example can be realized.

[0064] The tailgate closing auxiliary device of the present embodiment drives the reel 1 to rotate by the rotary drive unit 3, so that the auxiliary pull strap 2 has a hanging state and a reeled state. When the auxiliary pull strap 2 is in the hanging state, a shorter person can close the tailgate by pulling the auxiliary pull strap 2, thereby improving the versatility of the vehicle. When the auxiliary pull strap 2 is in the reeled state, it occupies less space in the trunk and does not affect the storage of items inside the trunk, thereby having better practicality.

[0065] Embodiment 2

[0066] The present embodiment relates to a vehicle, on which a tailgate auxiliary device as in the first embodiment is provided. The specific installation method of the tailgate auxiliary device is still referred to the description in the first embodiment.

[0067] As a preferred embodiment, still refer to Figure 4 and Figure 5 As shown, the vehicle is provided with a controller 6, a control switch and a rear door lock sensor. The controller 6 can be installed on the aforementioned first mounting bracket 7, for example, and the existing structure can be adopted. In the specific setting, the controller 6 is respectively connected to the control switch, the rear door lock sensor and the rotation drive unit 3.

[0068] With such arrangement, a control signal can be sent to the controller 6 through the control switch, and the controller 6 controls the motor 301 to rotate forward, so that the auxiliary strap 2 can be switched to a hanging state. When the rear door lock sensor detects that the rear door is closed, the signal is sent to the controller 6, and the controller 6 controls the motor 301 to reverse, so that the auxiliary strap 2 can be restored to a retracted state, thereby improving the convenience of using the rear door closing auxiliary device.

[0069] It should be noted that the control switch described above can be provided separately, or the existing control switch for controlling the opening of the back door can be used. The controller 6 described above can be provided separately, or the existing control module or control circuit for controlling the opening of the back door can be used. In addition to being mounted on the first mounting bracket 7, the controller 6 can also be mounted on the bottom wall or side wall of the back box, or can be mounted on the dashboard of the vehicle.

[0070] In addition, in this embodiment, the controller 6 may not be provided, but only a control switch may be provided. The control switch is specifically installed on the bottom wall or side wall of the trunk, and is connected to the aforementioned motor 301. The forward or reverse rotation of the motor 301 may also be directly controlled by the control switch.

[0071] The vehicle of this embodiment can be suitable for people with shorter stature to close the tailgate by installing a tailgate closing auxiliary device as in the first embodiment on the tailgate, thereby improving the versatility of the vehicle. When the auxiliary pull strap 2 is in the rolled-up state, it occupies less space in the trunk and does not affect the storage of items inside the trunk. This meets the customer's requirements for vehicle intelligence and has good practicality.

[0072] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A back door closing auxiliary device, characterized in that: It comprises a rotary drive unit (3) arranged on the back door, a reel (1) driven to rotate by the rotary drive unit (3), and an auxiliary drawstring (2) with one end connected to the reel (1); When the rotary drive unit (3) drives the reel (1) to rotate, the auxiliary pull belt (2) can be rolled up or released, and when the tailgate is opened, the auxiliary pull belt (2) that is pulled and released can drive the tailgate to flip and close.

2. The tailgate closing assist device according to claim 1, characterized in that: The back door has a back door trim panel (5) connected to the back door sheet metal on the side facing the interior of the vehicle; The rotary drive unit (3) and the reel (1) are both located between the rear door sheet metal and the rear door trim (5), and the rear door trim (5) is provided with a clearance hole for the auxiliary pull strap (2) to pass through.

3. The tailgate closing assist device according to claim 2, characterized in that: The rotary drive unit (3) and the reel (1) are both arranged on the rear door trim panel (5).

4. The tailgate closing assist device according to claim 2, characterized in that: The rotation driving unit (3) comprises a motor (301) and a power transmission mechanism (302), and the motor (301) drives the reel (1) to rotate via the power transmission mechanism (302).

5. The tailgate closing assist device according to claim 4, characterized in that: The power transmission mechanism (302) comprises a first rotating wheel (3021), a second rotating wheel (3022) and a transmission belt (3023); The first rotating wheel (3021) is arranged on the output shaft of the motor (301), the second rotating wheel (3022) is arranged on the reel (1), and the transmission belt (3023) is transmission-connected between the first rotating wheel (3021) and the second rotating wheel (3022).

6. The tailgate closing assist device according to claim 1, characterized in that: A counterweight block (4) is provided on the auxiliary drawstring (2), and after being released, the auxiliary drawstring (2) is hung on the back door via the counterweight block (4).

7. The tailgate closing assist device according to claim 6, characterized in that: The auxiliary drawstring (2) is inserted into a through hole on the counterweight block (4), and the counterweight block (4) can slide along the auxiliary drawstring (2).

8. The tailgate closing assist device according to any one of claims 1 to 7, characterized in that: Relative to the end of the auxiliary drawstring (2) connected to the reel (1), the other end of the auxiliary drawstring (2) is connected to the rear door.

9. A vehicle, characterized in that: The tailgate of the vehicle is provided with a tailgate closing auxiliary device according to any one of claims 1 to 8.

10. The vehicle according to claim 9, characterized in that: The vehicle is provided with a controller, a control switch and a rear door lock sensor, wherein the controller is connected to the control switch, the rear door lock sensor and the rotation drive unit (3) respectively; or, The vehicle is provided with a control switch, and the control switch is connected to the rotation drive unit (3).

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