Opening and closing device for charging door of electric vehicle
By adopting a multi-section hinge and elastic member structure on the charging door of the electric vehicle, the lateral swing and linear sliding movement of the charging door are achieved, which solves the problems of insufficient stiffness and large motion radius of the existing charging door, and achieves smaller protrusions, higher flexibility and more stable charging door operation.
Patent Information
- Application Number
- CN202510175171.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-18
- Publication Date
- 2025-05-13
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The existing electric vehicle charging door opening and closing devices are prone to damage and loss of opening and closing functions due to insufficient door stiffness. At the same time, the movement radius when opened is large, which makes it easy to interfere with the charging pile.
The structures including rail panels, guide rails, link components, etc. are adopted. Through the cooperation of multi-section hinges and elastic members, the lateral swing and linear sliding movement of the charging door are achieved to ensure the minimum protrusion and stability of the door when opened.
It effectively avoids obstruction of the field of view when the charging door is opened, reduces the amount of protrusion, avoids interference, and improves the support stiffness and flexibility of the charging door, and extends the service life.
Smart Images
Figure CN119975024A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of electric vehicle charging doors, and specifically discloses an opening and closing device for an electric vehicle charging door. Background Art
[0002] To charge electric vehicles, a charging port is usually installed at the front of the vehicle. The charging port generally includes two ports: a fast charging port and a normal charging port, which are used to charge electric vehicles under different conditions. In order to ensure that the electric vehicle can be charged conveniently and to maintain the overall shape of the vehicle and protect the charging port while driving, a charging door needs to be installed in front of the charging port;
[0003] In the past, the opening and closing devices of electric vehicle charging doors had two charging ports arranged in large sizes. The traditional side charging door required a large movement radius when opening, which would suddenly increase the protrusion in the front and cause interference with the charging pile. At the same time, the charging door was simply connected by two hinges, which was easy to cause damage. There were problems such as damage caused by insufficient door rigidity and loss of opening and closing functions. Summary of the invention
[0004] The purpose of the present invention is to solve the shortcomings in the prior art and to propose an opening and closing device for an electric vehicle charging door.
[0005] To achieve the above objectives, the present invention provides an opening and closing device for an electric vehicle charging door, comprising a charging door and a charging interface, wherein the front end of the charging door is fixedly connected to a rail plate, the front end of the rail plate is equipped with a guide rail, a link assembly is arranged on the inner side of the rail plate, the link assembly comprises a first hinge body movably connected to the inner side of the rail plate, a first hinge pin is movably connected inside the first hinge body, a first angle limiting section is fixedly connected to the upper end of the first hinge body, and a second hinge body is movably connected to the inner side of the rail plate close to the first hinge body.
[0006] In the above technical solution, preferably, one end of the second hinge body is fixedly connected to the second angle limiting section, the interior of the second hinge body is movably connected to the second hinge pin, and the inner side of the second hinge body is movably connected to the third hinge body.
[0007] In the above technical solution, preferably, the third hinge body is movably connected internally with a third hinge pin, the third hinge body is slidably connected to the guide rail via a rotating shaft, and an elastic component is installed at one end of the first hinge body.
[0008] In the above technical solution, preferably, a hinge locking limit block is installed on the inner side of the first hinge body, the first hinge pin passes through the interior of the rail plate, and the first hinge pin is fixedly connected to the rail plate.
[0009] In the above technical solution, preferably, the second hinge pin passes through the interior of the rail plate, and the second hinge pin is fixedly connected to the rail plate.
[0010] In the above technical solution, preferably, the third hinge pin passes through the interior of the second hinge body, and the third hinge pin is fixedly connected to the second hinge body.
[0011] In the above technical solution, preferably, the other end of the elastic member is installed at one end of the rail plate, the charging interface is opened on the vehicle body, and the charging door corresponds to the charging interface.
[0012] Compared with the prior art, the present invention has the following beneficial effects:
[0013] 1. The left and right side opening method avoids blocking the view of the charging operator when the charging door is opened, ensuring the best field of vision;
[0014] 2. The charging door is opened by swinging for the first time, and by sliding in a straight line for the second time. The segmented continuous action ensures that the protrusion of the charging door is minimized when it is opened, avoiding interference when it is opened.
[0015] 3. Using a total of four links, including one or more pairs of two links, can ensure smooth closing of the charging door and improve the supporting stiffness of the charging door.
[0016] 4. When the charging door is opening, a multi-section link is used for control, so that the charging door has high flexibility during the opening process. The multi-section link works together to make the movement trajectory of the charging door smaller, so that it is convenient for charging when the space around the vehicle is small. When the charging door is moved sideways using the multi-section link structure, the probability of collision and friction between the charging door and other foreign objects is reduced.
[0017] 5. The first angle limiting section connected to the first hinge body is in close contact with the supporting surface of the rail plate when the door is fully opened, thereby limiting the swinging movement of the charging door and supporting the charging door to remain parallel to the vehicle body. When the charging door is parallel to the vehicle body, the traditional door opening method is avoided from forming a vertical state with the vehicle body, thereby improving the stability between the charging door and the vehicle body, and the charging door cooperates with the elastic component and the multi-section link structure, so that the charging door can be quickly moved sideways to open, thereby reducing the operation time of opening the charging door. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 This is a schematic diagram of the overall structure of an opening and closing device for an electric vehicle charging door proposed by the present invention;
[0019] Figure 2 The overall opening structure of the opening and closing device of the electric vehicle charging door proposed by the present invention is shown in FIG. Figure 1 ;
[0020] Figure 3 The overall opening structure of the opening and closing device of the electric vehicle charging door proposed by the present invention is shown in FIG. Figure 2 ;
[0021] Figure 4 The overall opening structure of the opening and closing device of the electric vehicle charging door proposed by the present invention is shown in FIG. Figure 3 ;
[0022] Figure 5 The overall opening structure of the opening and closing device of the electric vehicle charging door proposed by the present invention is shown in FIG. Figure 4 ;
[0023] Figure 6 This is a schematic diagram of the overall exploded structure of an opening and closing device for an electric vehicle charging door proposed by the present invention.
[0024] In the figure: 10, charging door; 12, charging interface; 100, link assembly; 101, first hinge body; 102, second hinge body; 103, third hinge body; 104, elastic member; 105, first hinge pin; 106, second hinge pin; 107, guide rail; 108, third hinge pin; 109a, first angle limiting section; 109b, second angle limiting section; 110, hinge locking limit block; 200, rail plate. DETAILED DESCRIPTION
[0025] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.
[0026] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed below.
[0027] like Figure 1-Figure 6The opening and closing device of an electric vehicle charging door shown in the figure includes a charging door 10 and a charging interface 12. The front end of the charging door 10 is fixedly connected to a rail plate 200, and a guide rail 107 is installed at the front end of the rail plate 200. A link assembly 100 is arranged on the inner side of the rail plate 200. The link assembly 100 includes a first hinge body 101 movably connected to the inner side of the rail plate 200, and a first hinge pin 105 is movably connected inside the first hinge body 101. The upper end of the first hinge body 101 is fixedly connected to a first angle limiting section 109a, and a second hinge body 102 is movably connected to the inner side of the rail plate 200 near the first hinge body 101.
[0028] One end of the second hinge body 102 is fixedly connected with a second angle limiting section 109b, the second hinge body 102 is movably connected with a second hinge pin 106 inside, the inner side of the second hinge body 102 is movably connected with a third hinge body 103, the inner side of the third hinge body 103 is movably connected with a third hinge pin 108, the third hinge body 103 is slidably connected with the guide rail 107 through a rotating shaft, one end of the first hinge body 101 is installed with an elastic member 104, the inner side of the first hinge body 101 is installed with a hinge locking limit block 110, and the third hinge body 103 is slidably connected with the guide rail 107 through a rotating shaft. A hinge pin 105 passes through the interior of the rail plate 200, and the first hinge pin 105 is fixedly connected to the rail plate 200. The second hinge pin 106 passes through the interior of the rail plate 200, and the second hinge pin 106 is fixedly connected to the rail plate 200. The third hinge pin 108 passes through the interior of the second hinge body 102, and the third hinge pin 108 is fixedly connected to the second hinge body 102. The other end of the elastic member 104 is installed at one end of the rail plate 200. The charging interface 12 is opened on the vehicle body, and the charging door 10 corresponds to the charging interface 12.
[0029] During use, when the charging door 10 is opened, first, the elastic member 104 connected between the first hinge body 101 and the rail plate 200 uses its elastic restoring force to make the first hinge body 101 swing around the line of angular rotation of the vehicle body hinge fixing point toward the opening direction of the charging door 10. At this time, the charging door 10 swings to one side following the swinging movement of the first hinge body 101 and opens for the first time. At the same time, the second hinge body 102 also performs an angular swing movement in the opening direction with the vehicle body hinge fixing point as the center. At this time, the charging door 10 is opened for the first time to a state parallel to the vehicle body. After the charging door 10 completes the above-mentioned first opening, the elastic restoring force of the elastic member 104 will continue to act. On the first hinge body 101, the second hinge body 102 rotates accordingly, and drives the third hinge body 103 connected thereto to move linearly along the guide rail 107, thereby driving the charging door 10 to slide in a linear direction after the first opening, and to form a second opening action to a fully opened state while maintaining a state approximately parallel to the vehicle body. First, the left and right lateral opening method avoids blocking the field of vision of the charging operator when the charging door 10 is opened, ensuring the best field of vision; second, the opening process of the charging door 10 is realized by a swinging action for the first opening process, and by a linear sliding action for the second opening, and the segmented continuous action ensures that the charging door 10 is opened. The protrusion is minimized when the charging door 10 is opened, thereby avoiding interference when the charging door 10 is opened; thirdly, a total of four links, including one or more two-link links, are used to ensure that the charging door 10 closes smoothly, and at the same time, the supporting stiffness of the charging door 10 can be improved; fourthly, during the opening process of the charging door 10, a multi-link is selected for control, so that the charging door 10 has high flexibility during the opening process, and the multi-link cooperates with each other to make the movement trajectory of the charging door 10 smaller when opening and closing, thereby facilitating charging when the space around the vehicle is small, and when the charging door 10 is moved sideways using the multi-link structure, the probability of collision and friction between the charging door 10 and other foreign objects is reduced; Fifth, when the door is fully opened, the first angle limiting section 109a connected to the first hinge body 101 is in close contact with the supporting surface of the rail plate 200, thereby limiting the swinging movement of the charging door 10 and supporting the charging door 10 to remain parallel to the vehicle body. When the charging door 10 is parallel to the vehicle body, the traditional door opening method is avoided to form a vertical state with the vehicle body, thereby improving the stability between the charging door 10 and the vehicle body, and the charging door 10 cooperates with the elastic member 104 and the multi-section link structure, so that the charging door 10 can be quickly moved sideways to open, thereby reducing the operation time of opening the charging door 10.
[0030] Working principle: When the charging door 10 is opened, first, the elastic member 104 connected between the first hinge body 101 and the rail plate 200 uses its elastic restoring force to make the first hinge body 101 swing around the fixed point of the vehicle body hinge to the opening direction of the charging door 10. At this time, the charging door 10 follows the swinging movement of the first hinge body 101 and swings to one side and opens for the first time. At the same time, the second hinge body 102 also swings in the opening direction with the fixed point of the vehicle body hinge as the center. At this time, the charging door 10 is opened for the first time to a state parallel to the vehicle body. After the charging door 10 completes the above-mentioned first opening, the elastic restoring force of the elastic member 104 will continue to The first hinge body 101 is continuously acted on, and the second hinge body 102 rotates accordingly, and drives the third hinge body 103 connected thereto to move linearly along the guide rail 107, thereby driving the charging door 10 to slide in a linear direction after the first opening, and forms a second opening action to a fully opened state while maintaining a state approximately parallel to the vehicle body. On the other hand, the first angle limiting section 109a connected to the first hinge body 101 is in close contact with the supporting surface of the rail plate 200 when the door is fully opened, thereby limiting the swinging action of the charging door 10 and supporting the charging door 10 to maintain parallelism with the vehicle body. The second angle limiting section 109a connected to the second hinge body 102 is in close contact with the supporting surface of the rail plate 200, thereby limiting the swinging action of the charging door 10 and supporting the charging door 10 to maintain parallelism with the vehicle body. When the door is fully opened, 109b is in close contact with the supporting surface of the first hinge body 101 to keep the charging door 10 stable in the open state. The hinge locking limit block 110 starts to be inserted into the opening at one end of the second hinge body 102 at the end of the movement, and is fully inserted when it is fully opened, ensuring that the entire link system is limited to the open state when opened, ensuring its stability and that the charging door 10 will not be in a reciprocating shaking state during the charging process, thereby avoiding interference between the charging door 10 and the charging gun during the charging process. In the above entire opening action of the charging door 10, the first opening process characterized by a rotating swinging action and the second opening process characterized by a linear sliding action are included. The actions of the two processes are continuous, and the charging door 10 is kept parallel to the vehicle body, so as to maintain the minimum distance for opening. First, the left and right lateral opening method avoids the blocking of the vision of the charging operator when the charging door 10 is opened, ensuring the best vision; second, the opening process of the charging door 10 is realized by a swinging action for the first opening process, and the second opening is realized by a linear sliding action. The segmented continuous action ensures that the protrusion of the charging door 10 is minimized when it is opened, avoiding the occurrence of interference when opening; third, the use of a total of four links including more than one pair of two links can ensure the smooth closing of the charging door 10, and at the same time can improve the supporting stiffness of the charging door 10;Fourth, when the charging door 10 is opened, a multi-section link is selected for control, so that the charging door 10 has high flexibility during the opening process, and the multi-section link cooperates together to make the charging door 10 have a smaller movement trajectory when opening and closing, so as to facilitate charging when the space around the vehicle is small, and when the charging door 10 is moved sideways using the multi-section link structure, the probability of collision and friction between the charging door 10 and other foreign objects is reduced; Fifth, when the door is fully opened, the first angle limiting section 109a connected to the first hinge body 101 is in contact with the rail plate 2 00, the swinging movement of the charging door 10 is limited, and the charging door 10 is supported to remain parallel to the vehicle body. When the charging door 10 is parallel to the vehicle body, the traditional door opening method is avoided to form a vertical state with the vehicle body, thereby improving the stability between the charging door 10 and the vehicle body, and the charging door 10 cooperates with the elastic member 104 and the multi-section link structure, so that the charging door 10 can be quickly moved sideways to open, thereby reducing the operation time of opening the charging door 10. ;
[0031] In the present invention, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; it can be connected directly or indirectly through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0032] In the description of this specification, if the terms "one embodiment", "some embodiments", "specific embodiments" and the like appear, it means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.
[0033] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.
Claims
1. An opening and closing device for an electric vehicle charging door, comprising a charging door (10) and a charging interface (12), characterized in that: The front end of the charging door (10) is fixedly connected to a rail plate (200), the front end of the rail plate (200) is installed with a guide rail (107), the inner side of the rail plate (200) is provided with a link assembly (100), the link assembly (100) comprises a first hinge body (101) movably connected to the inner side of the rail plate (200), the interior of the first hinge body (101) is movably connected to a first hinge pin (105), the upper end of the first hinge body (101) is fixedly connected to a first angle limiting section (109a), and the inner side of the rail plate (200) close to the first hinge body (101) is movably connected to a second hinge body (102).
2. The opening and closing device of the electric vehicle charging door according to claim 1, characterized in that: One end of the second hinge body (102) is fixedly connected to a second angle limiting section (109b), the interior of the second hinge body (102) is movably connected to a second hinge pin (106), and the inner side of the second hinge body (102) is movably connected to a third hinge body (103).
3. The opening and closing device of the electric vehicle charging door according to claim 2, characterized in that: The third hinge body (103) is movably connected to a third hinge pin (108) inside, and the third hinge body (103) is slidably connected to the guide rail (107) via a rotating shaft, and an elastic component (104) is installed at one end of the first hinge body (101).
4. The opening and closing device of the electric vehicle charging door according to claim 3, characterized in that: A hinge locking limit block (110) is installed on the inner side of the first hinge body (101); the first hinge pin (105) passes through the interior of the rail plate (200); and the first hinge pin (105) is fixedly connected to the rail plate (200).
5. The opening and closing device of the electric vehicle charging door according to claim 4, characterized in that: The second hinge pin (106) passes through the interior of the rail plate (200), and the second hinge pin (106) is fixedly connected to the rail plate (200).
6. The opening and closing device of the electric vehicle charging door according to claim 5, characterized in that: The third hinge pin (108) passes through the interior of the second hinge body (102), and the third hinge pin (108) is fixedly connected to the second hinge body (102).
7. The opening and closing device of the electric vehicle charging door according to claim 5, characterized in that: The other end of the elastic component (104) is mounted on one end of the rail plate (200), the charging interface (12) is provided on the vehicle body, and the charging door (10) corresponds to the charging interface (12).