CN110984756A

CN110984756A - Vehicle back door jacking mechanism

Info

Publication number: CN110984756A
Application number: CN201911230014.1A
Authority: CN
Inventors: 郭新飞; 杨光南; 贺志杰; 陈熙; 刘强; 宋贺; 袁艺; 薛秀全; 张阳; 孟凡翔; 齐士泉; 康进忠; 郭宏; 尹旺庆; 孙聚运; 贺云峰
Original assignee: Great Wall Motor Co Ltd
Current assignee: Great Wall Motor Co Ltd
Priority date: 2019-12-04
Filing date: 2019-12-04
Publication date: 2020-04-10
Anticipated expiration: 2039-12-04
Also published as: CN110984756B

Abstract

The invention provides a vehicle back door jacking mechanism which is arranged between a back door and a vehicle body of a vehicle, and comprises a driving part and a jacking part, wherein the driving part is fixedly arranged in one of the back door and the vehicle body and comprises a driving part fixedly arranged relative to the driving part and a swinging mechanism in transmission connection with the driving part, the jacking part is arranged on the driving part in a guiding manner, and the jacking part is driven by the swinging mechanism to move back door in a reciprocating manner along the opening direction of the back door so as to be capable of extending out of one of the back door and the vehicle body and jacking the other of the back door and the vehicle body. The vehicle back door jacking mechanism can improve the opening stability and reliability of the back door.

Description

Vehicle back door jacking mechanism

Technical Field

The invention relates to the technical field of automobile manufacturing, in particular to a jacking mechanism of a back door of a vehicle.

Background

Currently, in some vehicle models, in order to improve the aesthetic appearance of the back door of the vehicle, the back door is not provided with an opening buckle. The bouncing mechanism of the vehicle back door is generally used on the back door of the buckle-free handcart type, and after the back door is unlocked, the back door is bounced to a certain angle to cross the balance point of the back door, so that a gap appears between the back door and a vehicle body, and a person who is convenient to open the back door by hand or assist the back door to open automatically.

The spring is adopted by the bouncing mechanism of the existing vehicle type, the bouncing mechanism is provided with a bouncing mechanism jacket, the movable support rod is sleeved in the bouncing mechanism jacket, the spring is arranged between the bottom of the bouncing mechanism jacket and the movable support rod, and the bouncing mechanism jacket is arranged on the back door. The movable support rod of the mechanism can not return after being popped out, so that the appearance is influenced; meanwhile, during the closing process of the back door, the spring is compressed, and the closing force needs to overcome the compression force of the spring. In a daily back door closing state, a spring of the bouncing mechanism is always in a compressed state, the spring force is attenuated and the spring is permanently deformed after the bouncing mechanism is used for a long time, and accumulated snow or other additional external force is applied to the back door, so that the back door is easy to open and lose efficacy; and the spring element is also subject to corrosion failure.

Disclosure of Invention

In view of the above, the present invention is directed to a vehicle back door lifting mechanism to improve the opening stability and reliability of a back door.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

the utility model provides a vehicle back door climbing mechanism, installs in between the back door of vehicle and automobile body, includes:

a driving part fixedly arranged in one of the back door and the vehicle body; the driving part comprises a driving part fixedly arranged relative to the driving part and a swinging mechanism in transmission connection with the driving part;

and the jacking part is arranged on the driving part in a guiding manner, is driven by the swinging mechanism and can reciprocate along the opening direction of the back door so as to extend out of one of the back door and the vehicle body and jack the other of the back door and the vehicle body away.

Furthermore, the driving part also comprises a guide body which is arranged on the driving part in a guiding way, and the guide body is connected with the driving end of the swinging mechanism; the jacking part is fixedly arranged on the guide body.

Furthermore, the swing mechanism comprises a turbine which is driven by the driving piece to rotate and a swing arm which is arranged between the turbine and the guide body in a transmission way.

Furthermore, one end of the swing arm is fixedly connected in a central hole of the turbine through a penetrating shaft, the other end of the swing arm is provided with a driving pin, and the guide body is provided with a guide seat sliding groove; when the swing arm rotates along with the turbine, the driving pin slides in the guide seat sliding groove to drive the guide body to move in a reciprocating mode.

Furthermore, the driving part also comprises a base body which is fixedly arranged on the driving part and is stacked with the turbine, the swing arm and the turbine are respectively arranged on two sides of the base body with a gap, and the penetrating shaft is pivoted and arranged in a through hole of the base body.

Furthermore, the base body is provided with an annular guide groove for guiding the driving pin.

Furthermore, the driving pin is clamped between the guide body and the base body, and two ends of the driving pin are respectively arranged in the guide seat sliding groove and the annular guide groove.

Furthermore, the driving part is a motor, and a worm in meshing transmission with the turbine is arranged on an output shaft of the motor.

Furthermore, relative to one end fixedly arranged on the guide body, the other end of the jacking part is sleeved with a soft jacking head.

Furthermore, an annular deformation groove is formed on the end surface of the soft plug, which is back to the jacking part.

Compared with the prior art, the invention has the following advantages:

the vehicle back door jacking mechanism provided by the invention has the advantages that the driving part is adopted to drive the jacking part to complete jacking and retracting actions, the reciprocating movement of the jacking part is realized by utilizing the movement periodicity of the swinging mechanism to form jacking and retracting, and the mechanical transmission is utilized to replace a spring, so that the opening mechanism of the back door is more stable in operation and higher in reliability. The jacking part can retract in time, so that the part near the opened back door is more neat and beautiful, and the appearance of the periphery of the back door cannot be influenced by the abrupt bulge caused by the arrangement of the mechanism.

The swing mechanism is adopted in the transmission of the driving part, the transmission conversion from the rotary motion to the linear motion is realized, the transmission efficiency is high, and the running stability is good. The swing rod is structurally designed into a form of matching the turbine with the swing arm, the worm is used for realizing speed reduction transmission of the turbine, the whole transmission arrangement is more reasonable, and the operation stability of the jacking mechanism is further improved. The swing rod is designed to be fixed on the turbine to rotate in a swing arm mode, the driving pin at one end of the swing arm is used for driving the guide body to slide in the guide body sliding groove on the guide body, the guide body is driven to move, the guide body can obtain larger guide moving distance under the condition that the size of the turbine is certain, and therefore the miniaturization design of the size of the whole jacking mechanism is facilitated.

Meanwhile, the base body is arranged in the driving part, the turbine and the swing arm are fixed on the base body in a pivoting mode through the penetrating shaft, a stable fixing base is configured for the whole driving part, and stability and reliability in the swing arm rotating process are kept favorably. And set up annular guide way on the base member, make the drive pin of swing arm have stable direction and support when the drive guide body removes to can make the atress of drive pin more steady, drive stationarity is better. The guide body is also guided and arranged on the base body, so that the key parts are fixed, positioned and guided into a whole, the driving and guiding matching performance of the guide body is better, and the running stability of the mechanism is further improved.

In addition, install soft top additional for the jacking end of jacking portion to construct deformation groove at the jacking contact surface of soft top, buffering and the deformability when jacking portion and automobile body or back door contact can be improved, make the jacking action more releive, lighter to the harm by the top surface.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention, illustrate embodiments of the invention and together with the description serve to explain the invention, and the description is given by way of example only and without limitation to the terms of relative positions. In the drawings:

fig. 1 is a schematic view of an overall appearance structure of a vehicle back door jacking mechanism according to an embodiment of the invention;

FIG. 2 is an exploded view of a vehicle back door jacking mechanism according to an embodiment of the present invention;

FIG. 3 is a schematic structural view of the jacking portion and the driving portion shown in the view of A in FIG. 2;

FIG. 4 is a schematic structural view of the jacking portion and the driving portion shown in a view B of FIG. 2;

FIG. 5 is a front view of a turbine and swing arm according to an embodiment of the present invention;

FIG. 6 is a side view of a turbine and swing arm according to an embodiment of the present invention;

FIG. 7 is a schematic structural view of the jacking portion and the driving portion shown in the view of C in FIG. 3;

FIG. 8 is a cross-sectional view taken along line D-D of FIG. 4;

FIG. 9 is a schematic perspective view of the jacking portion, the guide body and the swing arm according to the embodiment of the present invention; description of reference numerals:

1-a jacking part, 100-a guide body, 101-a fixed clamping block, 102-a guide block, 103-a cushion pad, 104-a guide body sliding groove, 2-a soft jacking head and 201-a deformation groove;

3-driving part, 30-shell, 300-driving part, 301-worm, 302-worm wheel, 303-swing arm, 304-penetrating shaft, 305-driving pin, 306-locking nut, 307-penetrating shaft key, 310-base body, 311-guide groove, 312-via hole, 313-annular guide groove; 314-bearings.

Detailed Description

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, terms of orientation such as left, right, up, down, and the like are used for convenience of description and are based on terms in the illustrated state, and should not be construed as limiting the structure of the present invention.

The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

The embodiment relates to a vehicle back door climbing mechanism, can promote back door opening's stationarity and reliability, and this vehicle back door climbing mechanism install in between the back door and the automobile body of vehicle, including drive division and jacking portion two parts.

Wherein, the drive part is fixedly arranged in the back door or the inside of the vehicle body. The driving part comprises a driving part fixedly arranged relative to the driving part and a swinging mechanism in transmission connection with the driving part. The lifting part is arranged on the driving part in a guiding manner, receives the driving of the swinging mechanism, can move back and forth along the opening direction of the back door, and can extend out of one of the back door and the vehicle body so as to lift the other of the back door and the vehicle body away, thereby opening the unlocked back door.

Based on the above overall design concept, an exemplary structure of the vehicle back door jacking mechanism of the present embodiment is shown in fig. 1 and 2, and mainly includes two parts, namely a jacking portion 1 and a driving portion 3.

In order to protect the driving part 3 and facilitate the installation and fixation of the driving part 3, the casing 30 can be wrapped outside the driving part 3, and the driving part 3 is fixedly arranged in the casing 30. Obviously, the drive portion 3 may be mounted inside the tailgate of the vehicle, but may also be mounted inside the vehicle body, such as inside the rear bumper under the tailgate. The following description will be given taking as an example the case of being mounted inside a rear bumper of a vehicle body.

As shown in fig. 2, 3 and 4, the driving part 3 includes a driving member 300, a guide body 100 and a swing mechanism. The lifting part 1 is fixed to the guide body 100. The driving member 300 preferably uses a motor, and an output shaft of the motor constitutes a rotational driving output for facilitating driving control of the driving section 3. After the back door is unlocked, the motor is controlled to rotate through an electric signal sent by a vehicle control system so as to drive the back door to be lifted and opened; after the vehicle is started, a motor rotation signal is continuously given to enable the jacking portion 1 fixedly arranged on the guide body 100 to complete a reciprocating movement cycle, and the jacking portion 1 retracts into the vehicle body. Wherein, the guide body 100 is arranged on the fixed base part in a guiding way and can move in a reciprocating guiding way along the opening direction of the back door; the lifting part 1 is clamped and fixed on the guide body 100 by a fixed clamping block 101 fixedly connected with the guide body 100, and can be tightly installed by using a bolt. The drive element 300 is also fixedly mounted on a fixed base element, which here may be part of the drive section 3 or may be part of the vehicle body.

In the transmission of the driving part 3, the conversion from the rotation of the motor to the straight stroke movement can be realized by using a worm gear structure, and the ascending and descending of the guide body 100 are realized by the forward and reverse rotation of the motor, so that the extending and retracting driving of the jacking part 1 is completed. However, the driving effect and the operation stability of the design form are poor, in this embodiment, a swing mechanism is adopted, that is, a swing arm, a swing rod and other structural members are adopted in the transmission between the driving member 300 and the guide body 100, so as to realize the transmission conversion from the rotary motion to the linear motion, and the design has higher transmission efficiency and good operation stability.

Specifically, the transmission of the swing mechanism is configured with various options, and preferably, as shown in fig. 3 and 4, the following mechanism form may be adopted. The swing mechanism includes a turbine 302 driven to rotate by the driver 300, and a swing arm 303 disposed between the turbine 302 and the guide body 100. Since the motor serving as the driver 300 has a high rotation speed, a worm 301 is provided between the driver 300 and the worm wheel 302 to increase the torque and reduce the rotation speed. The swing rod structure is designed to be in the form of matching of the turbine 302 and the swing arm 303, and the worm 301 is used for realizing speed reduction transmission of the turbine 302, so that the whole transmission arrangement is more reasonable, and the running stability of the jacking mechanism is further improved.

The arrangement of the swing arm 303 between the guide body 100 and the turbine 302 is various, and an eccentric shaft pin may be provided on the turbine 302, and both ends of the swing arm 303 are hinged to the guide body 100 and the shaft pin, respectively. In this embodiment, as shown in fig. 5 and 6, one end of the swing arm 303 is fixedly connected to the central hole of the turbine 302 through a through shaft 304, the other end of the swing arm 303 is provided with a driving pin 305, and the guide body 100 is provided with a guide body chute 104; when the swing arm 303 rotates with the turbine 302, the driving pin 305 slides in the guide body sliding slot 104 to drive the guide body 100 to reciprocate.

Specifically, the end of the through shaft 304 may be threaded, and after the through shaft 304 is inserted into the central hole of the turbine 302, the through shaft 304 is fastened to the turbine 302 by screwing the nut 306. To prevent the through shaft 304 from rotating relative to the turbine 302, a rotation stop through shaft key 307 may be added between the through shaft 304 and the turbine center bore.

The swing rod is designed to be fixed on the turbine 302 in a rotating swing arm 303 mode, the driving pin 305 at one end of the swing arm 303 is used for driving and sliding in the guide body sliding groove 104 on the guide body 100 to form driving on the guide body 100, and the guide body 100 can obtain larger guiding movement distance under the condition that the size of the turbine 302 is certain, so that the size miniaturization design of the whole jacking mechanism is facilitated.

Obviously, the driving member 300, the turbine 302, the guiding body 100, etc. can be fixedly, rotatably or slidably arranged on the housing 30, and the housing 30 is used as a fixed base member; preferably, in the present embodiment, as shown in fig. 2 in combination with fig. 7 and 8, the above components are all disposed on the base 310, and the base 310 is used as a fixing base. The base body 310 is used as a component of the driving part 3 and is arranged in a laminating way with the turbine 302, the swing arm 303 and the turbine 302 are respectively arranged on two sides of the base body 310 with a gap, and the penetrating shaft 304 is pivoted and arranged in a through hole 312 of the base body 310. The base 310 is fixedly disposed on the housing 30. The base body 310 is arranged in the driving part 3, the turbine 302 and the swing arm 303 are fixed on the base body 310 through the penetrating shaft 304 in a pivoting mode, a stable fixed foundation is configured for the whole driving part 3, and stability and reliability in the rotating process of the swing arm 303 are favorably maintained. Moreover, the turbine 302 and the swing arm 303 for driving are separately arranged on two sides of the base body 310, so that the stress of the base body 310 can be more balanced, and the durability of the whole driving part 3 is better.

For the pivotal insertion of the insertion shaft 304 in the through hole 312, a bearing 314 may be additionally provided between the insertion shaft 304 and the through hole 312 to reduce the rotational resistance of the insertion shaft 304, thereby reducing the overall resistance of the rotational driving of the driving portion 3.

In order to make the force applied to the driving pin 305 more stable and the driving smoothness more stable, a ring-shaped guide groove 313 for guiding the driving pin 305 is formed on the base 310. The ring-shaped guide groove 313 is provided on the base 310, so that the driving pin 305 of the swing arm 303 can have stable guiding support while driving the guide body 100 to move. The driving pin 305 is a driving end penetrating through the swing arm 303, preferably, the driving pin 305 protrudes out of both sides of the swing arm 303 with an end, one end of the driving pin 305 is inserted into the guide body sliding groove 104 to drive the guide body 100 to move, and the other end is inserted into the annular guide groove 313 for guiding, so that the rotation of the swing arm 303 is more stable. Therefore, in the arrangement of the guide body 100 and the base body 310, a certain space is reserved between the guide body 100 and the base body 310, and the driving pin 305 and the driving end of the swing arm 303 thereof are clamped between the guide body 100 and the base body 310.

Furthermore, to form an integral arrangement of the fixation, positioning and guiding of the key components, it is preferable to also guide the guide body 100 onto the base body 310. As shown in fig. 7 and 8 in conjunction with fig. 9, the guide body 100 is designed in a beam shape to be disposed astride the base body 310 in consideration of the sliding distance of the drive pin 305 within the guide body slide groove 104. A fixed clamping block 101 is fixedly arranged above the middle part of the guide body 100 and is used for fixedly mounting the jacking part 1; two guide blocks 102 are fixedly arranged at two ends of the guide body 100, two guide grooves 311 are formed in the base body 310 corresponding to the two guide blocks 102, and the guide blocks 102 slide in the guide grooves 311, so that the guide body 100 can move on the base body 310 in a guiding mode. The guide body 100 is arranged on the base body 310 in a guiding mode, so that the driving and guiding matching performance of the guide body 100 is better, and the operation stability of the mechanism is further improved.

Similarly, as shown in fig. 7 and 8 in combination with fig. 9, in order to improve the buffering and deformation performance of the lifting portion 1 when contacting with the car body or the back door, so that the lifting action is more gentle and the damage to the top surface of the car body or the back door is lighter, the other end of the lifting portion 1 is sleeved with a soft top 2 relative to the end fixedly mounted on the guide body 100. Preferably, an annular deformation groove 201 may be formed on an end surface of the soft plug 2 facing away from the lifting portion 1. Soft top 2 is installed additional to the jacking end of jacking portion 1 to at the jacking contact surface structure deformation groove 201 of soft top 2, can make the deformation and the cushioning effect of soft top 2 better.

In addition, in order to prevent the soft plug 2 from rigidly touching the outer wall of the housing 30 during the retraction of the lifting portion 1, a buffer pad 103 may be sleeved on the rod body of the lifting portion 1. Preferably, the cushion pad 103 and the soft plug 2 are made of rubber.

The vehicle back door climbing mechanism of this embodiment, the drive division 3 that adopts driving piece 300 drive orders about 1 completion jacking of jacking portion and retraction, utilizes rotary motion's periodicity to realize 1 reciprocating motion of jacking portion and constitute jacking and retraction, utilizes mechanical transmission to replace the spring to make the opening mechanism of this back door move more steadily, the reliability is higher.

When the automobile back door unlocking device is used, a control system of an automobile firstly sends a back door unlocking signal, then controls a driving piece 300 of a jacking mechanism of the automobile back door to rotate, drives the jacking part 1 to eject, enables the back door to be opened to cross a balance point so as to keep an opening gap formed between the automobile back door and an automobile body, and then a driver and passengers stretch hands to enter the gap and manually and completely open the back door. The balance point is the conventional arrangement of a manual back door, and is generally realized by the matching angle of the elastic pneumatic support rod and the back door, so that the back door can overcome the self gravity of the back door by utilizing the support of the pneumatic support rod after being opened to cross the balance point, and the back door is kept at a position for opening a certain gap.

After the jacking part 1 is completely jacked and extended, the driving part 300 continues to drive, the jacking part 1 retracts to the initial position, at the moment, the driving signal to the driving part 300 is cut off, and a jacking opening process is completed. For the signal that jacking portion 1 returns to the right place, modes such as accessible add and establish position switch, the inductive signal transmission of position switch for control system realizes vehicle control system to the vehicle back door climbing mechanism overall action process's coordinated control.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides a vehicle back door climbing mechanism, install in between the back door of vehicle and the automobile body, its characterized in that includes:

a drive unit (3) fixedly provided in one of the back door and the vehicle body; the driving part (3) comprises a driving part (300) which is fixedly arranged relative to the driving part (3) and a swinging mechanism which is in transmission connection with the driving part (300);

and the lifting part (1) is arranged on the driving part (3) in a guiding manner, and the lifting part (1) is driven by the swinging mechanism to reciprocate along the opening direction of the back door so as to extend out of one of the back door and the vehicle body and lift the other of the back door and the vehicle body away.

2. The vehicle back door jacking mechanism of claim 1, wherein: the driving part (3) further comprises a guide body (100) which is arranged on the driving part (3) in a guiding mode, and the guide body (100) is connected with the driving end of the swinging mechanism; the jacking part (1) is fixedly arranged on the guide body (100).

3. The vehicle back door jacking mechanism of claim 2, wherein: the swing mechanism comprises a turbine (302) which is driven by the driving piece (300) to rotate, and a swing arm (303) which is arranged between the turbine (302) and the guide body (100) in a transmission way.

4. The vehicle back door jacking mechanism of claim 3, wherein: one end of the swing arm (303) is fixedly connected in a central hole of the turbine (302) through a penetrating shaft (304), the other end of the swing arm (303) is provided with a driving pin (305), and the guide body (100) is provided with a guide seat sliding groove (104); when the swing arm (303) rotates along with the turbine (302), the driving pin (305) slides in the guide seat sliding groove (104) to drive the guide body (100) to move in a reciprocating manner.

5. The vehicle back door jacking mechanism of claim 4, wherein: the driving part (3) further comprises a base body (310) which is fixedly arranged on the driving part (3) and is stacked with the turbine (302), the swing arm (303) and the turbine (302) are arranged on two sides of the base body (310) in a separated mode with a gap, and the penetrating shaft (304) is arranged in a penetrating hole (312) of the base body (310) in a pivoting mode.

6. The vehicle back door jacking mechanism of claim 5, wherein: the base body (310) is provided with an annular guide groove (313) for guiding the driving pin (305).

7. The vehicle back door jacking mechanism of claim 6, wherein: the driving pin (305) is clamped between the guide body (100) and the base body (310), and two ends of the driving pin (305) are respectively arranged in the guide seat sliding groove (104) and the annular guide groove (313).

8. The vehicle back door jacking mechanism of claim 3, wherein: the driving piece (300) is a motor, and a worm (301) in meshing transmission with the turbine (302) is arranged on an output shaft of the motor.

9. The vehicle back door jacking mechanism according to any one of claims 1 to 8, wherein: and a soft top head (2) is sleeved at the other end of the jacking part (1) relative to one end fixedly arranged on the guide body (100).

10. The vehicle back door jacking mechanism of claim 9, wherein: an annular deformation groove (201) is formed on the end surface of the soft plug (2) opposite to the jacking part (1).