Vehicle door limiting system and vehicle

Abstract

The invention relates to a vehicle door limiting system and a vehicle, and the vehicle door limiting system comprises a first hinge used for being fixedly connected to a vehicle body; the second hinge is used for being fixedly connected to the vehicle door, and the second hinge is rotatably connected to the first hinge; the piston comprises a cylinder barrel and a piston rod capable of stretching out and drawing back in the cylinder barrel, and the first hinge and the second hinge are connected to the ends, deviating from each other, of the cylinder barrel and the piston rod correspondingly so as to stretch into or stretch out of the cylinder barrel when driven by the second hinge; the air bag limiting device comprises an air bag cavity, the air bag cavity comprises a plurality of cavity bodies which are communicated with one another, and the width of the joint of every two adjacent cavity bodies is smaller than that of the middle of each cavity body; and the air bag is arranged in the air bag cavity and communicates with the cylinder barrel. The vehicle door limiting system can achieve flexible limiting, no obvious pause phenomenon occurs in front of and behind a limiting point, and the man-machine engineering experience is improved; the car door limiting system can adapt to the actual limiting requirement by adjusting the shape of the air bag cavity, and is more flexible.

Description

Technical Field

[0001] The present disclosure relates to the technical field of vehicles, and in particular, to a door limiting system and a vehicle. Background Art

[0002] With the development of the automotive industry and the economic society, in people's daily lives, the use of automobiles is becoming more and more common, and the quality of automobiles is also receiving more and more attention.

[0003] Currently, the upper part of the rear door of an automobile is hinged to the vehicle body through a hinge, enabling the rear door to rotate relative to the vehicle body to achieve opening and closing. In the related art, the rear door usually can only stay at its maximum opening angle position and the closed position, and cannot stay at an intermediate position. Especially when parking on a slope or in a tilted state, the rear door may suddenly close under the action of wind or the like after being opened. If someone stands between the rear door and the rear door vehicle body, it may cause injury to people; at present, the rear doors of some vehicles on the market can be fully opened or half-opened, and their limiting structures mainly limit the position through the concave-convex structure of the hinge. The limiting process is rigid and there is a large jamming phenomenon, and the limiting design is completely locked and cannot be adjusted. Summary of the Invention

[0004] The purpose of the present disclosure is to provide a door limiting system and a vehicle to at least partially solve the problems existing in the related art.

[0005] To achieve the above purpose, the present disclosure provides a door limiting system, including: A first hinge for fixedly connecting to the vehicle body; A second hinge for fixedly connecting to the door, and the second hinge is rotatably connected to the first hinge; A piston, the piston includes a cylinder barrel and a piston rod that can extend and retract in the cylinder barrel, and the first hinge and the second hinge are respectively connected to opposite ends of the cylinder barrel and the piston rod to extend into or out of the cylinder barrel when driven by the second hinge; An airbag limiting device, the airbag limiting device includes an airbag cavity, the airbag cavity includes a plurality of interconnected cavities, and the width at the junction of two adjacent cavities is smaller than the width at the middle of the cavity; and An airbag disposed in the airbag cavity and communicating with the cylinder barrel.

[0006] Optionally, in the direction from near the cylinder barrel to far from the cylinder barrel, the volumes of the plurality of cavities gradually increase.

[0007] Optionally, the airbag cavity is configured in a gourd shape.

[0008] Optionally, the wall thickness of the airbag gradually increases from the end near the cylinder barrel to the end far from the cylinder barrel.

[0009] Optionally, the cylinder is slidably mounted on the first hinge, and one end of the piston rod is rotatably connected to the second hinge.

[0010] Optionally, one end of the piston rod is connected to the middle of the second hinge.

[0011] Optionally, the cylinder communicates with the airbag through an air duct.

[0012] Optionally, the air duct is configured in an L shape, and the air duct includes a horizontal section connected to the cylinder and a vertical section connected to the airbag.

[0013] Optionally, the cylinder is slidably mounted on the first hinge.

[0014] Optionally, the airbag limiting device is slidably mounted on the first hinge, and the airbag limiting device and the cylinder are respectively mounted on two opposite side walls of the first hinge.

[0015] According to a second aspect of the present disclosure, there is also provided a vehicle including the above-mentioned door limiting system, wherein the second hinge is fixedly connected to the rear door.

[0016] Through the above technical solution, when the door is opened, the second hinge stretches the piston rod, sucking the gas inside the airbag chamber into the cylinder of the piston. When the door is opened to the maximum extent and then the door closing action is performed, the second hinge compresses the piston rod, and the piston discharges the gas into the airbag. The airbag gradually expands. After expanding to fill one of the cavities, a greater force is required for further expansion, causing the airbag to pass through the junction of the adjacent two cavities. At this time, if the applied door closing force does not increase any more, the door will be in a balanced state, playing a limiting role. Gradually breaking through cavities of different sizes will generate limiting forces of different sizes and positions. By restricting the movement of the gas in the piston, the limiting structure is achieved. This door limiting system can achieve flexible limiting, without obvious jerks before and after the limiting point, enhancing the ergonomic experience. In addition, this door limiting system can adapt to actual limiting requirements by adjusting the shape of the airbag chamber. For example, according to different people's heights, different limiting points can be adjusted, and according to the weight of different doors, different limiting forces can be adjusted, with a more flexible design.

[0017] Other features and advantages of the present disclosure will be described in detail in the subsequent detailed description section. Description of the Drawings

[0018] The drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation to the present disclosure. In the drawings: Figure 1 It is a schematic structural diagram of a door limiting system provided by an exemplary embodiment of the present disclosure; Figure 2 It is a broken line graph showing the relationship between the resistance of the airbag and the rotation angle of the second hinge in the door limiting system provided by an exemplary embodiment of the present disclosure.

[0019] Description of reference numerals 1 - First hinge; 2 - Second hinge; 3 - Piston; 31 - Cylinder barrel; 32 - Piston rod; 4 - Airbag limiting device; 41 - Airbag chamber; 5 - Airbag; 6 - Air duct Detailed implementation manners The following will describe the detailed implementation manners of the present disclosure with reference to the accompanying drawings. It should be understood that the detailed implementation manners described herein are only for the purpose of illustration and explanation of the present disclosure, and are not used to limit the present disclosure.

[0020] In the present disclosure, unless otherwise stated, the orientation terms "upper", "lower", "top", and "bottom" are defined based on the actual use directions of the relevant components. "Inner" and "outer" refer to the contour of the corresponding components themselves. The terms "first", "second", etc. used in the present disclosure are used to distinguish one element from another, and do not have sequentiality and importance. In the present disclosure, when the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0021] Refer to Figure 1, the present disclosure provides a door limiting system, which may include a first hinge 1, a second hinge 2, a piston 3, an airbag limiting device 4, and an airbag 5. Among them, the first hinge 1 is used for fixedly connecting to the vehicle body; the second hinge 2 is used for fixedly connecting to the door, and the second hinge 2 is rotatably connected to the first hinge 1. Specifically, the first hinge 1 is stationary, and the second hinge 2 can be rotatably connected to the first hinge 1 through a hinge to realize the opening and closing of the door; the piston 3 may include a cylinder 31 and a piston rod 32 that can be telescoped in the cylinder 31. The first hinge 1 and the second hinge 2 can be respectively connected to opposite ends of the cylinder 31 and the piston rod 32. In the embodiment provided by the present disclosure, the cylinder 31 can be connected to the first hinge 1, and the piston rod 32 can be connected to the second hinge 2 to extend into or out of the cylinder 31 when driven by the second hinge 2. In the embodiment of the present disclosure, the piston 3 is an air piston, and the air contained in the cylinder 31 can be discharged through the movement of the piston rod 32. During the working process, the second hinge 2 continuously pushes the piston rod 32 back and forth to realize the continuous compression or expansion of the gas, so that the airbag 5 contracts or expands; the airbag limiting device 4 may include an airbag cavity 41, and the airbag cavity 41 may include a plurality of interconnected cavities, and the width of the junction of two adjacent cavities is smaller than the width of the middle of the cavity. In this way, when the gas in the cylinder 31 passes through the junction of the two cavities, the expansion resistance of the airbag 5 is increased, and then the internal air pressure of the airbag 5 is increased, causing the movement of the piston 3 to be stuck to form a limit; in addition, the internal shape of the airbag limiting device 4 can be customized according to actual limiting requirements to form a space for the airbag 5 to expand. The present disclosure does not limit the shape and size of the airbag cavity 41, which all belong to the protection scope of the present disclosure; the airbag 5 is arranged in the airbag cavity 41 and is communicated with the cylinder 31. Specifically, the airbag 5 can be made of rubber. After the air enters the airbag 5 from the cylinder 31, the airbag 5 will expand and become larger to accommodate more air. When the air pressure in the airbag 5 is equal to or greater than the external pressure, the airbag 5 will no longer become larger.

[0022] Through the above technical solution, when the car door is opened, the second hinge stretches the piston rod, sucking the gas inside the airbag chamber into the cylinder of the piston. When the car door is opened to the maximum extent and then the action of closing the car door is implemented, the second hinge compresses the piston rod, and the piston discharges the gas into the airbag. The airbag gradually expands. After expanding to fill one of the cavities, a greater force is required for further expansion, causing the airbag to pass through the junction of two adjacent cavities. At this time, if the closing force applied is no longer increased, the car door will be in a balanced state, playing a limiting role. Gradually breaking through cavities of different sizes will generate limiting forces of different sizes and positions. By restricting the movement of the gas in the piston, a limiting structure is achieved. This car door limiting system can achieve flexible limiting, without obvious jerks before and after the limiting point, enhancing the ergonomic experience. In addition, this car door limiting system can adapt to actual limiting requirements by adjusting the shape of the airbag chamber. For example, according to the height of different people, different limiting points can be adjusted, and according to the weight of different car doors, different limiting forces can be adjusted, with a more flexible design.

[0023] In some embodiments, referring to Figure 1 , in the direction from near the cylinder 31 to far from the cylinder 31, the volumes of multiple cavities can gradually increase. In this way, during the process of closing the car door, the smaller-volume cavities are first filled, and then the larger-volume cavities are gradually filled, making the change in the opening angle of the car door from slow to fast. This is because more limiting points are usually required when the car door is near the maximum opening position, and fewer limiting points are usually required when the car door is near the closed position. The present disclosure can adjust the sizes of multiple cavities according to the actual requirements for limiting points. In other embodiments, the volumes of multiple cavities can be the same, or the volumes of multiple cavities from near the cylinder 31 to far from the cylinder 31 can gradually decrease. The present disclosure does not limit this.

[0024] In some embodiments, referring to Figure 1 , the airbag chamber 41 can be configured in a gourd shape. At this time, the cavity is similar to a sphere, and this design can make the airbag transition more smoothly during the expansion process. The present disclosure does not limit the shape of the airbag chamber 41, as long as the width at the junction of two adjacent cavities is less than the width at the middle of the cavity. In the embodiments of the present disclosure, the airbag chamber 41 includes three cavities. The relationship between the rotation angle of the second hinge 2 and the resistance of the airbag 5 is as Figure 2 shown. As the resistance of the airbag 5 increases, the rotation angle of the second hinge 2 gradually increases. At each limiting point, that is, at the junction of two adjacent cavities, a greater force needs to be applied to the second hinge 2 to increase the rotation angle of the second hinge 2. At this time, if the closing force applied is no longer increased, the car door will be in a balanced state, playing a limiting role.

[0025] As an exemplary embodiment of the present disclosure, referring to Figure 1 and Figure 2, the wall thickness of the airbag 5 can gradually increase from the end close to the cylinder barrel 31 to the end far from the cylinder barrel 31. According to the principle of minimum energy consumption, the airbag 5 close to the cylinder barrel 31 expands first. After expanding to completely fill the cavity close to the cylinder barrel 31, a greater force is required for further expansion. When the airbag 5 passes through the gourd mouth structure, that is, the junction of two adjacent cavities, the closing force applied will no longer increase, and the car door will then enter a balanced state, thus achieving a limiting effect, realizing precise limiting, preventing the car door from swinging randomly, and enabling the car door to remain relatively stable at a specific position. Similarly, gradually breaking through the airbag cavities with gradually increasing thickness will generate limiting forces with different magnitudes and positions, so that the gas fills the remaining cavities in sequence until the cavity far from the cylinder barrel 31 is filled, ultimately achieving the complete closing of the car door. With such a design, it is possible to provide appropriate resistance for the car door at different closing stages according to actual needs, making the car door closing process smoother and more controllable.

[0026] As Figure 1 shown, the cylinder barrel 31 can be slidably mounted on the first hinge 1. Since the second hinge 2 drives the piston rod 32 to move horizontally while the piston rod 32 also undergoes vertical movement, therefore, slidingly mounting the cylinder barrel 31 on the vertically arranged first hinge 1 can simultaneously adapt to the movement of the piston rod 32 in both horizontal and vertical directions, avoiding jamming during movement. Specifically, a vertically extending slide rail can be installed on the first hinge 1, and the cylinder barrel 31 can be slidably connected to the slide rail through a slider. Additionally, the first hinge 1 can also be inclined as long as it can meet the movement of the piston 3. One end of the piston rod 32 is rotatably connected to the second hinge 2, further adapting to the movement of the piston rod 32 and avoiding affecting the opening or closing action of the car door.

[0027] Specifically, referring to Figure 1 , one end of the piston rod 32 can be connected to the middle of the second hinge 2 to ensure that during the closing process of the car door, the force can be evenly distributed to the entire hinge, making the piston rod 32 push the car door more smoothly and reducing jamming.

[0028] In some embodiments, referring to Figure 1 , the cylinder barrel 31 and the airbag 5 can be connected through an air duct 6, and the air duct 6 is used to transfer the air in the cylinder barrel 31 to the airbag 5.

[0029] Among them, the air duct 6 can be configured in an L shape. The air duct 6 can include a horizontal section connected to the cylinder barrel 31 and a vertical section connected to the airbag 5. In the embodiments of the present disclosure, referring to Figure 1 , the cylinder barrel 31 is horizontally installed so that the second hinge 2 can drive the piston rod 32 to move horizontally; the airbag limiting device 4 is vertically installed, which can save space in the horizontal direction, and the L-shaped air duct 6 is convenient for connecting the two to realize the transportation and conduction of gas.

[0030] Furthermore, referring to Figure 1 , in order to make the airbag limiting device 4 more stable, the airbag limiting device 4 can be slidably mounted on the first hinge 1, and the sliding mounting structure of the airbag limiting device 4 can be the same as that of the cylinder barrel 31. Specifically, the airbag limiting device 4 and the cylinder barrel 31 can be respectively mounted on two opposite side walls of the first hinge 1, so as to make full use of the space, enable the air duct 6 to have sufficient length to transport gas, and thus have sufficient buffering when closing the door.

[0031] According to the second aspect of the present disclosure, a vehicle is further provided. The vehicle may include the above-mentioned door limiting system, wherein the second hinge 2 is fixedly connected to the rear door. When opening the rear door of the vehicle, the rear door is lifted upward, stretching the piston rod 32, and sucking the gas inside the airbag chamber 41 into the piston 3. When the rear door is lifted to the limit, the door limiting system starts to function; when closing the rear door, the piston rod 32 is compressed, and the piston 3 discharges the gas into the airbag 5. This door limiting system can enable the rear door to stay at the middle position, prevent the rear door from suddenly closing after being opened, avoid danger, and is more flexible to use, improving the user experience. The vehicle has all the beneficial effects of the above-mentioned door limiting system, which will not be elaborated here.

[0032] The preferred embodiments of the present disclosure have been described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0033] In addition, it should be noted that, in the above specific embodiments, the various specific technical features described can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the present disclosure will not separately describe various possible combination manners.

[0034] In addition, any combination can be made between various different embodiments of the present disclosure as long as it does not violate the idea of the present disclosure, and it should also be regarded as the content disclosed by the present disclosure.

Claims

1. A door stop system, characterized in that: include: A first hinge (1) for fixedly connecting to the vehicle body; A second hinge (2) is used for being fixedly connected to the vehicle door, and the second hinge (2) is rotatably connected to the first hinge (1); A piston (3), the piston (3) comprising a cylinder (31) and a piston rod (32) capable of being extended and retracted in the cylinder (31), the first hinge (1) and the second hinge (2) being respectively connected to ends of the cylinder (31) and the piston rod (32) which are away from each other, so as to extend into or out of the cylinder (31) when driven by the second hinge (2); An airbag limiting device (4), the airbag limiting device (4) comprising an airbag cavity (41), the airbag cavity (41) comprising a plurality of cavities that are interconnected, and the width of a junction between two adjacent cavities is smaller than the width of a middle portion of the cavity; as well as An airbag (5) is disposed in the airbag cavity (41) and is in communication with the cylinder (31).

2. The door limiting system according to claim 1, characterized in that: In a direction from close to the cylinder barrel (31) to far away from the cylinder barrel (31), the volumes of the plurality of cavities gradually increase.

3. The door limiting system according to claim 1, characterized in that: The airbag cavity (41) is configured in a gourd shape.

4. The door limiting system according to claim 1, characterized in that: The wall thickness of the airbag (5) gradually increases from the end close to the cylinder (31) to the end far from the cylinder (31).

5. The door limiting system according to claim 1, characterized in that: The cylinder (31) is slidably mounted on the first hinge (1), and one end of the piston rod (32) is rotatably connected to the second hinge (2).

6. The door limiting system according to claim 5, characterized in that: One end of the piston rod (32) is connected to the middle part of the second hinge (2).

7. The door limiting system according to any one of claims 1 to 6, characterized in that: The cylinder (31) is in communication with the airbag (5) via an air guide tube (6).

8. The door limiting system according to claim 7, characterized in that: The air guide tube (6) is constructed in an L shape, and comprises a horizontal section connected to the cylinder (31) and a vertical section connected to the air bag (5).

9. The door limiting system according to claim 8, characterized in that: The airbag limiting device (4) is slidably mounted on the first hinge (1); the airbag limiting device (4) and the cylinder (31) are respectively mounted on two opposite side walls of the first hinge (1).

10. A vehicle, characterized in that: The vehicle door limiting system comprises the vehicle door limiting system according to any one of claims 1 to 9, wherein the second hinge (2) is fixedly connected to the rear door.

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