WO2019214192A1

WO2019214192A1 - Tailgate and vehicle

Info

Publication number: WO2019214192A1
Application number: PCT/CN2018/114360
Authority: WO
Inventors: 陆群; 马骝; 丁雷
Original assignee: 北京长城华冠汽车科技股份有限公司
Priority date: 2018-05-07
Filing date: 2018-11-07
Publication date: 2019-11-14
Also published as: CN108820051A; CN108820051B

Abstract

Disclosed are a tailgate and a vehicle, wherein the tailgate comprises: an inner plate (1), an outer plate (2) and a limiting hinge (3); wherein the inner plate (1) and the outer plate (2) are integrated into one piece by a two-colour injection molding process; and the limiting hinge (3) is connected to the inner plate (1) and limits the opening of the tailgate.

Description

Tailgate and vehicle

Cross-reference to related applications

This application claims the priority of the Chinese Patent Application No. "201810426605.5" filed on May 7, 2018 by Beijing Great Wall Huaguan Automobile Technology Co., Ltd., which is entitled "Tailgate and Vehicle".

Technical field

The present application relates to the field of vehicle technology, and in particular to a tailgate and a vehicle.

Background technique

With the rapid development of the automotive industry, more and more cars, and vehicles are getting lighter. However, we are currently faced with the challenge of ensuring performance while reducing the weight of vehicles and vehicle parts.

At present, referring to Fig. 1, the inner panel 1' and the outer panel 2' of the back door are generally sheet metal, the door glass 5' is quartz glass, and the inner panel 1' and the outer panel 2' are connected by welding, and the local position is increased. Reinforcing plate. Referring to Fig. 2, in the conventional hinge mechanism, the hinge 3' and the pneumatic stay 4' are usually engaged to realize the opening and closing of the back door. The hinge 3' includes: a hinge body 31', a mounting seat 32' and a limiting mechanism; the hinge body 31' is rotatably connected to the mounting seat 32', and the first hinge hole 32' is provided with two first mounting holes a'. It is connected to the back door of the car through two first bolts. Two second mounting holes b' are formed in the bottom of the mounting seat to connect with the rear upper side of the rear door of the automobile through the two second bolts. It can be seen that the setting of the pneumatic strut 4' undoubtedly increases the weight of the body, and the hinge mechanism cannot automatically open or close the back door.

Application content

In view of this, the present application proposes a tailgate, which aims to solve the problem that the current tailgate is of high quality.

In one aspect, the present application proposes a tailgate comprising: an inner panel, an outer panel and a limit hinge; wherein the inner panel and the outer panel are integrated by a two-color injection molding process; the limit hinge is connected to the inner panel to The opening of the tailgate is limited.

Further, in the tailgate, the limit hinge comprises: a base; a hinge body rotatably connected to the base, which is also connected to the inner panel; an elastic drive mechanism that is connected to the base at one end and abuts against the hinge body at the other end, The elastic driving mechanism is configured to drive the hinge body to rotate relative to the base; a limiting mechanism is disposed on one side of the base and rotatably connected to the base at one end, and the limiting mechanism is configured to limit the rotational displacement of the hinge body relative to the base.

Further, in the tailgate, the two side plate portions of the base are correspondingly provided with two second mounting holes for threading the rotating shaft.

Further, in the tailgate, the limiting mechanism includes: a first gear and a second gear; wherein the first gear is mounted on one end of the rotating shaft for rotating under the driving of the rotating shaft; one end of the second gear is mounted on The base has the other end nested in the first gear for engaging with the first gear to limit the rotational displacement of the hinge body.

Further, in the tailgate, the first gear has a fan-shaped structure, and the arc-shaped segments of the sector-shaped structure are provided with a plurality of first protruding teeth, and the plurality of second protruding teeth of the second gear mesh with the first protruding teeth.

Further, in the above tailgate, one end of the rotating shaft is provided with a split pin for fastening the first gear to the rotating shaft.

Further, in the tailgate, the bottom of the base is provided with an adjusting member for adjusting the gap difference between the base and the vehicle roof assembly.

Further, in the tailgate, the inner panel is provided with a groove to be engaged with the sealing strip, and the limiting hinge is located outside the groove.

Further, the tailgate further includes: a buckle connected to the inner panel.

Further, in the tailgate, the lock and the limit hinge are respectively located at two ends of the inner panel.

Further, in the tailgate, the limit hinges are at least two, and the buckle and the limit hinges form a triangle.

Compared with the traditional sheet metal tailgate, in this application, the inner and outer panels are integrated into one body through a two-color injection molding process, and the inner panel, the outer panel and the limit hinge are integrally formed, thereby greatly reducing the weight of the tailgate and realizing The weight of the tailgate is light.

On the other hand, the present application also proposes a vehicle including the tailgate in the above embodiment.

Since the tailgate has the above effects, the vehicle having the tailgate also has a corresponding technical effect.

Additional aspects and advantages of the present invention will be set forth in part in the description which follows.

DRAWINGS

1 is a schematic structural view of a tailgate in the prior art;

2 is a schematic structural view of a hinge in the prior art;

3 is a schematic structural view of a pneumatic strut in the prior art;

4 is a schematic side view of a tailgate provided by an embodiment of the present application;

FIG. 5 is a schematic outside view of a tailgate according to an embodiment of the present application; FIG.

FIG. 6 is a schematic structural diagram of a groove provided by an embodiment of the present application;

FIG. 7 is a schematic structural diagram of a limit hinge provided by an embodiment of the present application;

FIG. 8 is still another schematic structural diagram of a limit hinge provided by an embodiment of the present application;

FIG. 9 is a schematic structural diagram of a buckle provided by an embodiment of the present application;

FIG. 10 is a schematic diagram of the arrangement of the buckle and the limit hinge provided by the embodiment of the present application.

detailed description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While the embodiments of the present invention have been shown in the drawings, the embodiments Rather, these embodiments are provided so that this disclosure will be more fully understood and the scope of the disclosure will be fully disclosed. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings.

Tailgate embodiment:

Referring to Figures 4 and 5, there is shown a preferred construction of the tailgate provided by the present embodiment. As shown, the tailgate includes an inner panel 1, an outer panel 2, and a limit hinge 3. Among them, the inner panel 1 and the outer panel 2 are integrated by a two-color injection molding process, and the materials can be made of PC and ABS composite lightweight materials to make the tailgate lightweight. The outer panel 2 forms the outer surface of the tailgate, and the inner panel 1 forms the inner surface of the tailgate. Referring to FIG. 6, in the specific implementation, the inner surface of the inner panel 1 is provided with an annular groove 11 to facilitate the sealing of the sealing strip 12. . The limit hinge 3 is connected to the inner panel 1 to limit the opening of the tailgate. In specific implementation, the limit hinge 3 is located outside the recess 11 to avoid the impact on the sealing of the tailgate; the limit hinge 3 It can be integrally formed with the inner panel 1 and the outer panel 2.

Compared with the conventional sheet metal tailgate, in the embodiment, the inner panel 1 and the outer panel 2 are integrated into one body by a two-color injection molding process, and the inner panel 1, the outer panel 2 and the limit hinge 3 are integrally formed, which greatly reduces the size. The weight of the tailgate realizes the weight reduction of the tailgate.

Referring to Figure 7, a preferred configuration of the limit hinge 3 provided by the present embodiment is shown. As shown, the limit hinge 3 may include a base 31, a hinge body 32, an elastic drive mechanism 33, and a limit mechanism 34. Wherein, when the tailgate is mounted on the vehicle, the base 31 is coupled to the body frame of the vehicle. The hinge body 32 is rotatably coupled to the base 31, and the hinge body 32 is also coupled to the inner panel 1. One end of the elastic driving mechanism 33 is connected to the base 31, and the other end is abutted against the hinge body 32. The elastic driving mechanism 33 is used to drive the hinge body 32 to rotate relative to the base 31. The limiting mechanism 34 is located at one side of the base 31 and is rotatably connected to the base 31 at one end. The limiting mechanism 34 is used for limiting the rotational displacement of the hinge body 32 relative to the base 31. The resilient drive mechanism 33 can drive the hinge body 32 to rotate relative to the base 31 when the tailgate is unlocked or latched to effect opening and closing of the tailgate.

In this embodiment, by abutting the elastic driving mechanism 33 against the hinge body 32, the elastic driving mechanism 33 drives the hinge body 32 to rotate when the tailgate is unlocked or locked, and the hinge body 32 is restrained relative to the base by the limiting mechanism 34. The rotational displacement of 31 effectively controls the degree of opening of the tailgate; in particular, by adding an elastic drive mechanism 33 between the base 31 and the hinge body 32, the deformation recovery capability of the elastic drive mechanism 33 can be utilized to realize the tailgate. Automatically turned on and off. Further, the use of aluminum alloy materials to make the various components is beneficial to the lightweight design of the body.

Referring to FIG. 7 and FIG. 8, the base 31 is provided with a first mounting hole, and one end of the elastic driving mechanism 33 is connected to the base 31 through the first mounting hole. That is, one end of the elastic driving mechanism 33 is disposed through the first mounting hole and fixed to the base 31. A card slot 321 is defined in the joint of the hinge body 32 with the base 31, and the other end of the elastic drive mechanism 33 abuts against the edge of the card slot 321 . That is, the other end of the elastic drive mechanism 33 is in contact with the hinge body 32 with a force transmission relationship therebetween.

The bottom of the base 31 is provided with a plurality of fourth mounting holes for connecting with the vehicle body frame. The aperture of the fourth mounting hole can be selected according to actual needs. The bottom of the base 31 can pass the corresponding specifications of the riveting bolts 10 (for example, the M10 riveted bolts) ) Connected to the body frame. The hinge body 32 defines a plurality of third mounting holes 8 for connecting with the inner panel 1. The aperture of the third mounting hole 8 can be selected according to actual needs, and the hinge body 32 can be installed through two third installations. The hole 8 is connected to the inner plate 1 after being passed through a connecting bolt 9 of a corresponding specification (for example, an M8 connecting bolt). The connection between the body frame and the tailgate is realized by the base 31 and the hinge body 32, and the opening and closing of the tailgate relative to the body frame is realized by the elastic drive mechanism 33.

In a specific implementation, the elastic driving mechanism 33 may be a torsion spring, and the torsion spring may respectively drive the hinge body 32 to rotate clockwise or counterclockwise to open or close the tailgate when the tailgate is unlocked or locked. For example, after the tailgate is unlocked, the torsion spring gradually recovers from the compressed state, and during this process, a torque or a rotational force is generated to drive the hinge body 32 to rotate to open the tailgate. The use of a torsion spring as the elastic drive mechanism 33 reduces the manufacturing cost of the limit hinge 3.

The base 31 may include a first bottom plate 312 and two side plates 311 connected to both sides of the upper portion of the first bottom plate 312. A first mounting hole is defined in one side plate 311 of the base 31, and one end of the elastic driving mechanism 33 is connected to the base 31 through the first mounting hole. Two upper mounting holes for the rotating shaft 4 are provided corresponding to the upper portions of the two side plates 311 of the base 31. A key groove that cooperates with the hinge body 32 and the limiting mechanism 34 is defined in the rotating shaft 4. Correspondingly, a plurality of splines that cooperate with the keyway are disposed at positions of the hinge body 32 and the limiting mechanism 34 that are coupled to the rotating shaft 4. One end of the rotating shaft 4 is provided with a blocking portion 41, which may be a circular plate-like structure, the diameter of which may be slightly larger than the diameter of the two second mounting holes, and the arrangement of the blocking portion 41 prevents the hinge body 32. The elastic drive mechanism 33 and the limit mechanism 34 are dropped from one end of the rotary shaft 4 after being mounted on the rotary shaft 4.

The bottom of the base 31 can also be mounted with an adjusting member 6 to adjust the gap between the base 31 and the vehicle top cover assembly when the tailgate is mounted on the vehicle, that is, between the tailgate and the vehicle roof assembly. The gap difference. Specifically, the adjusting member 6 may be a nylon gasket that can be worn through the riveting bolt 10. In the specific implementation, the thickness of the nylon gasket can be selected according to actual needs.

The hinge body 32 can be in the form of a sheet, a plate or the like, and has two cylindrical through portions 322 having a predetermined spacing at one end thereof for being rotatably connected to the rotating shaft 4 after being disposed through the rotating shaft 4. Specifically, the inner walls of the two through portions 322 may be provided with a plurality of splines, which can cooperate with the key grooves formed on the rotating shaft 4. The preset spacing between the two through portions 322 can be determined according to the size of the card slot 321 , and the size of the card slot 321 can be determined according to the size of the torsion spring, so that the design can be determined according to different types of vehicles. The performance parameters of the spring are reversed, and the size of the card slot 321 is determined.

With continued reference to FIG. 7, the stop mechanism 34 includes a first gear 341 and a second gear 342. The first gear 341 is mounted on one end of the rotating shaft 4 for rotation under the driving of the rotating shaft 4; one end of the second gear 342 is mounted on the base 31, and the other end is nested in the first gear 341 for A gear 341 is internally engaged to limit the rotational displacement of the hinge body 32.

The first gear 341 may have a fan-shaped structure, and the arcuate segments of the sector structure are provided with a plurality of first protruding teeth 343, and the plurality of second protruding teeth 344 of the second gear 342 are engaged with the respective first protruding teeth 343. The arc angle of the central angle of the first gear 341 can be determined according to actual needs. For example, if the opening height of the tailgate is required to be low, a fan-shaped structure with a small central angle can be selected as the first gear 341; If the opening height is high, a sector structure having a large central angle may be selected as the first gear 341. Preferably, the second gear 342 is nested at the beginning end of the first gear 341 to facilitate maximum adjustment of the ultimate displacement of the hinge body 32. In a specific implementation, one end of the rotating shaft 4 is provided with a split pin 5 for fastening the first gear 341 to the rotating shaft 4. One end of the rotating shaft 4 is provided with a connecting hole, and the opening pin 5 is disposed through the connecting hole to prevent the first gear 341 from being loosely deflected during the rotation with respect to the rotating shaft 4.

In this embodiment, the entire limit hinge 3 integrates the functions of the conventional hinge and the pneumatic strut, and integrates the hinge body 32 with the limiting mechanism 34, and weighs only 0.162 kg, compared with the conventional hinge and pneumatic support in the prior art. For the weight of the rod and 1.093kg, the weight loss is 0.931kg, and the weight loss rate is 85%; the material used for each component can be aluminum alloy material, for example, aluminum alloy with the number 6061, and the existing steel material. Compared with the hinge mechanism, the weight can be reduced by 30%. The limit hinge 3 in this embodiment can be used on the tailgate or the trunk lid of a small, lightweight electric vehicle. If the limit hinge 3 in this embodiment is applied to a new energy vehicle, it will be light in the vehicle body. Quantification plays a very important role.

Referring to FIG. 9, the tailgate may further include a buckle 7 connected to the inner side surface of the inner panel 1, and the buckle 7 being located inside the recess 11. Referring to FIG. 10, the limit hinges 3 are at least two, and the buckle 7 and the limit hinges 3 are respectively located at two ends of the inner panel 1, so that the buckle 7 and the limit hinges 3 form a triangle; preferably, the limit hinge 3 is Two, and the two limit hinges 3 are located on the same straight line. According to the arrangement position of the limit hinges 3, in order to ensure that the transparent visible area of the tailgate is as large as possible, and the tailgate closing process is smooth, the position of the lock buckle 7 is placed as vertical as possible. On the straight line of the center of the two limit hinges 3 connecting lines, and at the lowermost end of the inner panel 1. In a specific implementation, the buckle 7 can include a second bottom plate 71 and a lock ring 72. The second bottom plate 71 is bonded or welded to the inner surface of the inner panel 1. The lock ring 72 is riveted or welded to the second bottom plate 71. The lock ring 72 can be locked with the lock provided on the body frame. For the tailgate provided in this embodiment, the use of the latch 7 of this type is relatively light, and since the second bottom plate 71 has a large area, the connection between the inner panel 1 and the inner panel 1 can be made stronger.

In the embodiment, the working process of the limit hinge 3 is: when the tail door is unlocked, after the lock 7 is opened, the elastic drive mechanism 33 drives the rotating shaft of the hinge body 32 around the base 31 during the process of restoring the deformation. 4 rotating in the clockwise direction, the rotating shaft 4 then drives the limiting mechanism 34 to also rotate in the clockwise direction. Due to the internal meshing action of the first gear 341 and the second gear 342 in the limiting mechanism 34, the rotation of the hinge body 32 is generated. The resistance acts to make the rotation speed of the hinge body 32 relatively flat. At the same time, the hinge body 32 can rotate within a preset range, so that the tailgate can automatically open to a certain extent at a gentle speed; likewise, when the tailgate is locked After the lock 7 is closed, the elastic drive mechanism 33 is driven by an external force to drive the hinge body 32 to rotate in a counterclockwise direction around the rotating shaft 4 disposed on the base 31. The rotating shaft 4 then drives the limiting mechanism 34 to counterclockwise. The rotation of the direction, due to the internal meshing action of the first gear 341 and the second gear 342 in the limiting mechanism 34, exerts a resistance to the rotation of the hinge body 32, so that the rotation speed of the hinge body 32 is higher. Flat, while the hinge body 32 may be rotated within a predetermined range, the velocity is tailgate can automatically shut down.

In summary, compared with the traditional sheet metal tailgate, in this embodiment, the inner panel and the outer panel are integrated into one body through a two-color injection molding process, and the inner panel, the outer panel and the limit hinge are integrally formed, thereby greatly reducing the tailgate. The weight of the tailgate is lighter.

Vehicle example:

The vehicle includes the tailgate in the above embodiment. The limit hinge 3 of the tailgate is connected to the body frame of the vehicle, and the limit hinge 3 is used to open the tailgate and limit the opening range of the tailgate.

It will be apparent to those skilled in the art that various modifications and changes can be made in the present application without departing from the spirit and scope of the application. Thus, it is intended that the present invention cover the modifications and variations of the present invention.

Claims

A tailgate, comprising: an inner panel (1), an outer panel (2) and a limit hinge (3); wherein

The inner panel (1) and the outer panel (2) are integrated into one by a two-color injection molding process;

The limit hinge (3) is connected to the inner plate (1) to limit the opening of the tailgate.
The tailgate according to claim 1, characterized in that the limit hinge (3) comprises:

Base (31);

a hinge body (32) rotatably coupled to the base (31), which is also coupled to the inner panel (1);

An elastic driving mechanism (33) connected to the base (31) at one end and abutting against the hinge body (32) at the other end, the elastic driving mechanism (33) for driving the hinge body (32) relative to Rotating on the base (31);

a limiting mechanism (34) rotatably connected to the base (31) at one end of the base (31), the limiting mechanism (34) for limiting the hinge body (32) relative to the The rotational displacement of the base (31).
The tailgate according to claim 2, characterized in that

Two upper mounting holes for piercing the rotating shaft (4) are respectively provided at upper portions of the two side plates (311) of the base (31).
The tailgate according to claim 3, wherein the limiting mechanism (34) comprises: a first gear (341) and a second gear (342);

The first gear (341) is mounted at one end of the rotating shaft (4) for rotating under the driving of the rotating shaft (4);

One end of the second gear (342) is mounted on the base (31), and the other end is nested in the first gear (341) for engaging with the first gear (341) to limit the Rotational displacement of the hinge body (32).
The tailgate according to claim 4, characterized in that

The first gear (341) has a fan-shaped structure, and the arcuate segments of the sector structure are provided with a plurality of first protruding teeth (343), and a plurality of second protruding teeth (344) of the second gear (342) Each of the first protruding teeth (343) is engaged.
The tailgate according to claim 4, characterized in that

One end of the rotating shaft (4) is provided with a split pin (5) for fastening the first gear (341) to the rotating shaft (4).
The tailgate according to claim 2, characterized in that

The bottom of the base (31) is mounted with an adjusting member (6) for adjusting a gap difference between the base (31) and the vehicle roof assembly.
A tailgate according to any one of claims 1 to 7, wherein

The inner panel (1) is provided with a recess (11) to be engaged with the sealing strip, and the limiting hinge (3) is located outside the recess (11).
The tailgate according to any one of claims 1 to 7, further comprising:

A latch (7) is coupled to the inner panel (1).
The tailgate according to claim 9, wherein

The buckle (7) and the limit hinge (3) are respectively located at two ends of the inner panel (1).
The tailgate according to claim 9, wherein

The limit hinges (3) are at least two, and the buckle (7) and each of the limit hinges (3) form a triangle.
A vehicle having a tailgate according to any one of claims 1 to 11.