Door opening and closing devices

Abstract

The present invention relates to a door opening and closing device. The door opening and closing device comprises: a main body, a door, a guide component and a conveying component, the main body defines an opening and an internal space, the opening is open toward the outside of a vehicle body, the internal space is defined inside the vehicle body so as to communicate with the opening; the door is configured to open and close the opening; the guide component is arranged in the internal space and guides the door so that the door moves in a first direction and a direction opposite to the first direction, the first direction being a direction from the outside of the vehicle body to the inside of the vehicle body; the conveying component is arranged in the internal space and moves the door in a second direction and a direction opposite to the second direction.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims the benefit of priority from Korean Patent Application No. 10-2020-0067535 filed on June 4, 2020, in the Korean Intellectual Property Office, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present invention relates to a door opening and closing device. Background Art

[0004] Generally, an electric vehicle using electricity as an energy source has a charging port for charging a battery in the vehicle. The charging port is usually covered by a charging port door, and when the battery needs to be charged, the charging port is opened by moving the charging port door. Thereafter, a charging connector is inserted into the opened charging port, thereby charging the battery.

[0005] In the era of self-driving vehicles, a system will be built that enables the vehicle to detect a power shortage, drive to an electric vehicle (EV) charging station, charge the battery in the vehicle, and return to the original location even if the occupant is not driving the vehicle. The vehicle's charging port door needs to be able to open automatically.

[0006] In this case, the charge port door should not be scratched by interference when opened for charging, and interference caused by the charge port door should not occur when the charge connector enters the charge port.

[0007] However, since the charging port door of the electric vehicle in the related art mostly opens outward from the vehicle, components may be damaged when the charging port door is opened, and interference is more likely to occur when a charging connector with a wire connected thereto enters.

[0008] The information disclosed in this background technology section is only intended to enhance the understanding of the general background of the invention and should not be regarded as an acknowledgement or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. Summary of the invention

[0009] The present invention has been made to solve the above-mentioned problems existing in the prior art while completely maintaining the advantages achieved by the prior art.

[0010] One aspect of the present invention provides a door opening and closing device, which is used to minimize the interference of the charging port door with the outside when the charging port door is opened, and to minimize the interference caused by the charging port door when the charging connector enters after the charging port door is opened.

[0011] The technical problems solved by the inventive concept are not limited to the aforementioned problems, and those skilled in the art to which the present invention pertains will clearly understand any other technical problems not mentioned herein from the following description.

[0012] According to one aspect of the present invention, a door opening and closing device includes: a main body, a door, a guiding component and a conveying component, the main body defines an opening and an internal space, the opening is open toward the outside of a vehicle body, and the internal space is defined on the inside of the vehicle body and communicates with the opening; the door is configured to open and close the opening; the guiding component is arranged in the internal space and guides the door so that the door moves in a first direction and a direction opposite to the first direction, the first direction being a direction from the outside of the vehicle body to the inside of the vehicle body; the conveying component is arranged in the internal space and moves the door in a second direction and a direction opposite to the second direction, the second direction being a direction different from the first direction and away from the door.

[0013] When the door changes from a first state of closing the opening to a second state of opening the opening, the door performs a first operation to move in a first direction by being guided by a guide component, and then performs a second operation to move in a second direction by a conveying component, and when the door changes from the second state to the first state, the door performs a third operation to move in a direction opposite to the second direction by a conveying component, and then performs a fourth operation to move in a direction opposite to the first direction by being guided by the guide component.

[0014] The guide member may include a first guide groove and a second guide groove extending from the first guide groove. The second guide groove may extend in a second direction, and the first guide groove may be formed to be bent toward the opening from a distal end of the second guide groove based on a direction opposite to the second direction. The door may include a first protrusion that protrudes from the door toward the guide member so as to be inserted into the first guide groove or the second guide groove.

[0015] The guide member may further include a first stopper which is arranged at a distal end of the first guide groove based on a direction opposite to the first direction and restricts movement of the first protrusion.

[0016] The guide member may further include a second stopper which is disposed at a distal end of the second guide groove based on the second direction and restricts movement of the first protrusion.

[0017] The door opening and closing device may further include a connecting component that connects the door and the conveying component and is rotatably connected to the door and the conveying component. The connecting component may include a connecting component body that connects the conveying component and a second protrusion that protrudes from the door toward the conveying component, and is connected to the second protrusion so as to be rotatable around a first axis, and is connected to the conveying component so as to be rotatable around a second axis parallel to the first axis.

[0018] The connecting component may further include: a connecting component protrusion and an elastic member, wherein the connecting component protrusion protrudes from the connecting component body in at least one direction of the direction in which the first axis extends or in the opposite direction; the elastic member elastically and torsionally supports the connecting component protrusion to apply a force to the connecting component protrusion that rotates the connecting component body toward the inner side of the vehicle body.

[0019] The connecting member may further include a rotation limiting member including two tines, the rotation limiting member being arranged so that the connecting member protrusion is located between the two tines, wherein the rotation limiting member limits rotation of the connecting member protrusion through a predetermined angle or more.

[0020] The conveying component may include: a column extending in the second direction and having a thread formed on its outer peripheral surface, and a conveying component body, the column being rotatable around a third axis facing the second direction; the conveying component body including a conveying component protrusion and a groove, the conveying component protrusion protruding from the conveying component toward the connecting component and allowing the connecting component to be rotatably connected to the conveying component protrusion, the groove being formed to correspond to the shape of the thread. When the column rotates, the groove can move the conveying component body in the second direction and in a direction opposite to the second direction.

[0021] The conveying component may further include a driving component connected to the column and providing power to rotate the column, and the driving component may include a motor, a first rotating component, a second rotating component and a conveyor belt, the motor supplies power to rotate the column, the first rotating component is connected to the rotating shaft of the motor, the second rotating component is connected to the column and rotates together with the rotation of the first rotating component, and the conveyor belt is formed to surround at least a portion of the first rotating component and the second rotating component, so that the second rotating component rotates when the first rotating component rotates.

[0022] The guide component may further include: a first stopper and a second stopper, the first stopper limiting a fourth manipulation of the door; the second stopper limiting a second manipulation of the door, and the motor may include a load detection sensor, which obtains at least one of information about the first load or information about the second load, wherein the first load is a load applied to the column due to continuous rotation of the column when the door closes the opening despite the limitation of the first stopper on the fourth manipulation of the door, and the second load is a load applied to the column due to continuous rotation of the column when the door opens the opening despite the limitation of the second stopper on the second manipulation of the door.

[0023] The door opening and closing device may further include a display device which displays information related to charging, the display device being coupled to a surface of the main body facing outward from the vehicle body. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The above and other objects, features and advantages of the present invention will become more apparent through the following detailed description in conjunction with the accompanying drawings:

[0025] Figure 1 is a schematic diagram showing a main body and a door of a door opening and closing device according to an embodiment of the present invention;

[0026] Figure 2 is a schematic diagram showing a door opening and closing device according to an embodiment of the present invention;

[0027] Figure 3 is a schematic diagram showing the opening when the door is closed;

[0028] Figure 4 It is shown in Figure 3 A schematic diagram of a state in which the door is completely operated for the first time in the state;

[0029] Figure 5 It is shown in Figure 4 A schematic diagram of a state in which the door is completely operated for the second time in the state;

[0030] Figure 6 It is shown Figure 2 an enlarged view of a portion of the first protrusion shown in FIG.

[0031] Figure 7 It is shown Figure 2 An enlarged view of a portion of a connecting component shown in FIG.

[0032] Figure 8 Schematic diagrams of a door opening and closing device according to an embodiment of the present invention viewed from different angles;

[0033] Fig. 9: is a schematic diagram showing a column of a conveying member and a conveying member body of the door opening and closing device according to an embodiment of the present invention.

[0034] 100: Main body

[0035] 110: Opening

[0036] 200: Door

[0037] 210: First protrusion

[0038] 220: Second protrusion

[0039] 300: Guide component

[0040] 310: First guide groove

[0041] 320: Second guide groove

[0042] 330: First stopper

[0043] 340: Second stopper

[0044] 400: Conveying parts

[0045] 410: Column

[0046] 420: Conveying component body

[0047] 421: Conveying component protrusion

[0048] 430: Drive components

[0049] 431: Motor

[0050] 432: First rotating component

[0051] 433: Second rotating member

[0052] 434: Conveyor Belt

[0053] 500: Connecting parts

[0054] 510: Connecting part body

[0055] 520: Connecting part protrusion

[0056] 521: First connecting member protrusion

[0057] 522: Second connecting member protrusion

[0058] 530: Elastic member

[0059] 531: First elastic member

[0060] 532: Second elastic member

[0061] 540: Rotation limiting component

[0062] 540a, 540b: Fork tines

[0063] 541: First rotation limiting member

[0064] 542: Second rotation limiting member

[0065] 550: Bearings

[0066] 551: First bearing

[0067] 552: Second bearing

[0068] 600: Display device

[0069] 700: Open and close buttons

[0070] A1: First axis

[0071] A2: Second axis

[0072] A3: The third axis

[0073] D1: First direction

[0074] D2: Second direction. DETAILED DESCRIPTION

[0075] Hereinafter, some embodiments of the present invention will be described in detail with reference to the exemplary drawings. When adding reference numerals to the components of each drawing, it should be noted that even when the same or equivalent components are shown in other drawings, they are represented by the same reference numerals. In addition, when describing the embodiments of the present invention, the specific description of known features or functions will be excluded so as not to unnecessarily obscure the subject matter of the present invention.

[0076] <Specific structure of the door opening and closing device>

[0077] A door opening and closing device according to an embodiment of the present invention relates to a door opening and closing device that can be used for a charging port or a fuel inlet of a vehicle. Figure 1 and Figure 2 As shown, the door opening and closing device according to the embodiment of the present invention includes a main body 100, a door 200, a guide member 300, and a conveying member 400. Figure 1 is a schematic diagram showing a main body and a door of a door opening and closing device according to an embodiment of the present invention. Figure 2 is a schematic diagram showing a door opening and closing device according to an embodiment of the present invention. Figure 2 Parts corresponding to the vehicle body are not shown in other drawings.

[0078] The body 100 may define an opening 110 and an internal space. The opening 110 may be open in a direction toward the outside of the vehicle body. The internal space may be formed inside the vehicle body to connect to the opening 110. In the case where an electric vehicle using electricity as a power source needs to be charged, a charging connector located outside the vehicle may enter the internal space through the opening 110. Thereafter, the charging connector may be inserted into a charging socket in the internal space for charging.

[0079] In addition, in the case where a vehicle using oil as a power source needs to be refueled, a refueling machine located outside the vehicle can enter the interior space through the opening 110. Thereafter, the refueling machine can be inserted into the fuel inlet in the interior space to refuel the vehicle. For ease of description, the door opening and closing device will be illustrated as being used in an electric vehicle. However, the door opening and closing device according to an embodiment of the present invention can be applied to a vehicle using oil as a power source. In this case, the charging socket can correspond to the fuel inlet, and the charging connector can correspond to the refueling machine.

[0080] The door 200 may open and close the opening 110. The door 200 may include a portion formed to correspond to the shape of the opening 110. When the door 200 closes the opening 110, the charging connector cannot enter the inner space, and when the door 200 opens the opening 110, the charging connector can enter the inner space.

[0081] The guide member 300 may be disposed in the inner space. The guide member 300 may guide the door 200 so that the door 200 moves in a first direction D1 and a direction opposite thereto. The first direction D1 may refer to a direction from the outer side of the vehicle body toward the inner side of the vehicle body.

[0082] The conveying member 400 may be disposed in the inner space. The conveying member 400 may move the door 200 in the second direction D2 and in the opposite direction thereto. The second direction D2 may refer to a direction different from the first direction D1 and away from the door 200. Figure 2 , the second direction D2 is shown as being oriented in an upward direction. However, this is illustrative, and any direction of upward, downward, leftward, and rightward may be used as the second direction D2 without limitation, as long as the second direction D2 is different from the first direction D1 and is away from the door 200.

[0083] In the following, reference will be made to Figures 3 to 5 The operation of the door 200 is described in detail. Figure 3 is a schematic diagram showing when the door 200 closes the opening 110 . Figure 4 It is shown in Figure 3 Schematic diagram of the state in which the door 200 fully performs the first operation. Figure 5 It is shown in Figure 4Schematic diagram of the state in which the door 200 fully performs the second operation in the state.

[0084] When the door 200 is transformed from the first state to the second state, the second operation may be performed after the first operation. The first state may refer to a state in which the door 200 closes the opening 110, and the second state may refer to a state in which the door 200 opens the opening 110. The first operation may refer to an operation performed by the door 200 in the first direction D1 by being guided by the guide member 300. That is, the first operation is the operation of the door 200 from Figure 3 The status changes to Figure 4 The second manipulation may refer to the manipulation of the door 200 in the second direction D2 by the conveying member 400. That is, the second manipulation is the manipulation of the door 200 from Figure 4 The status changes to Figure 5 Manipulation of the state.

[0085] When the door 200 is transformed from the second state to the first state, the fourth operation may be performed after the third operation. The third operation may refer to the operation performed by the door 200 in the direction opposite to the second direction D2 through the conveying member 400. That is, the third operation may refer to the operation performed opposite to the second operation. The third operation may be the operation of the door 200 from Figure 5 The status changes to Figure 4 The fourth manipulation may refer to manipulation of the door 200 in a direction opposite to the first direction D1 by being guided by the guide member 300. That is, the fourth manipulation may refer to manipulation performed opposite to the first manipulation. The fourth manipulation may refer to manipulation of the door 200 in a direction opposite to the first direction D1. Figure 4 The status changes to Figure 3 Manipulation of the state.

[0086] Since the charging port door of the electric vehicle in the related art mostly opens outward from the vehicle, components may be damaged when the charging port door is opened, and interference is more likely to occur when a charging connector with a wire connected thereto enters.

[0087] According to the present invention, when the door 200 opens the opening 110, the door 200 is opened in such a manner that the door 200 is moved into the interior space of the vehicle body. Therefore, the interference of the door 200 with the outside of the vehicle body can be minimized. In addition, according to the present invention, when the door 200 opens the opening 110, the door 200 is opened in such a manner that the door 200 performs a first manipulation toward the inside of the vehicle body, and thereafter performs a second manipulation in a direction different from the first manipulation. Therefore, the door 200 does not block the charging socket, and thus when the charging connector enters the charging port, the interference generated by the door 200 can be minimized.

[0088] <Guide Grooves 310 and 320 and First Protrusion 210>

[0089] In the following, reference will be made to Figure 2 The guide member 300 and its components are described in detail. The guide member 300 may include a first guide groove 310 and a second guide groove 320. The first guide groove 310 may be formed to be bent toward the opening 110 from a distal end of the second guide groove 320 based on a direction opposite to the second direction D2. The second guide groove 320 may extend in the second direction D2 from a distal end of the first guide groove 310 based on the first direction D1. That is, the first guide groove 310 and the second guide groove 320 may be connected in a shape similar to a "J" shape as a whole.

[0090] The door 200 may include a first protrusion 210 . Figure 6 It is shown Figure 2 2 is an enlarged view of a portion of the protrusion 210 shown in FIG. The first protrusion 210 may protrude from the door 200 toward the guide member 300. The first protrusion 210 may be inserted into the first guide groove 310 or the second guide groove 320 and may move along the first guide groove 310 or the second guide groove 320.

[0091] In the case of the first manipulation, the first protrusion 210 may move in the first direction D1 while being guided along the first guide groove 310. In the case of the second manipulation, the first protrusion 210 may move in the second direction D2 while being guided along the second guide groove 320. In the case of the third manipulation, the first protrusion 210 may move in a direction opposite to the second direction D2 while being guided along the second guide groove 320. In the case of the fourth manipulation, the first protrusion 210 may move in a direction opposite to the first direction D1 while being guided along the first guide groove 310.

[0092] <First Stopper 330 and Second Stopper 340>

[0093] The guide member 300 may include a first stopper 330. The first stopper 330 may be disposed at a distal end of the first guide groove 310 based on a direction opposite to the first direction D1. The first stopper 330 may limit movement of the first protrusion 210 in a direction opposite to the first direction D1. That is, when the door 200 performs the fourth manipulation, the first stopper 330 may limit the first protrusion 210 from deviating from the first guide groove 310.

[0094] The guide member 300 may further include a second stopper 340. The second stopper 340 may be disposed at a distal end of the second guide groove 320 based on the second direction D2. The second stopper 340 may limit the movement of the first protrusion 210 in the second direction D2. That is, when the door 200 performs the second manipulation, the second stopper 340 may limit the first protrusion 210 from deviating from the second guide groove 320.

[0095] <Connection member 500>

[0096] The door opening and closing device according to an embodiment of the present invention may further include a connecting member 500. Figure 7 and Figure 8 The connection member 500 is described in detail. Figure 7 It is shown Figure 2 An enlarged view of a portion of the connecting component 500 is shown in FIG. Figure 8 Schematic diagrams showing a door opening and closing device according to an embodiment of the present invention viewed from different angles.

[0097] The connecting member 500 may connect the door 200 and the conveying member 400, and may be rotatably connected to the door 200 and the conveying member 400. When the connecting member 500 is rotatably connected to the door 200 and the conveying member 400, it means that the door 200 and the connecting member 500 are connected so as to be rotatable relative to each other around one axis, and the conveying member 400 and the connecting member 500 are connected so as to be rotatable relative to each other around another axis.

[0098] The connecting component 500 may include a connecting component body 510. The connecting component body 510 may connect the second protrusion 220 and the conveying component 400. The second protrusion 220 may refer to a protrusion protruding from the door 200 toward the conveying component 400. The connecting component body 510 may connect the second protrusion 220 and the conveying component 400. The connecting component body 510 may be connected to the second protrusion 220 so as to be rotatable around the first axis A1. The connecting component body 510 and the conveying component 400 may be connected so as to be rotatable around the second axis A2. The second axis A2 may be an axis parallel to the first axis A1. In this case, the first axis A1 and the second axis A2 may be virtual axes, rather than components that actually exist.

[0099] The connecting member 500 may further include a connecting member protrusion 520 and an elastic member 530. The connecting member protrusion 520 may protrude from the connecting member body 510 in at least one direction in which the first axis A1 extends or in a direction opposite thereto. The connecting member protrusion 520 may include a first connecting member protrusion 521 (refer to Figure 8), the first connecting member protrusion 521 is formed on the surface of the connecting member body 510 facing the conveying member 400. The connecting member protrusion 520 may include a second connecting member protrusion 522 (refer to Figure 7 ), the second connecting member protrusion 522 is formed on a surface of the connecting member body 510 opposite to a surface on which the first connecting member protrusion 521 is formed.

[0100] The elastic member 530 may apply a force to the connecting member protrusion 520 to rotate the connecting member body 510 toward the inside of the vehicle body. In order to rotate the connecting member protrusion 520 toward the inside of the vehicle body, the elastic member 530 may elastically and torsionally support the connecting member protrusion 520. The elastic member 530 may be a coil spring. The elastic member 530 may include a first elastic member 531 that elastically and torsionally supports the first connecting member protrusion 521. The elastic member 530 may include a second elastic member 532 that elastically and torsionally supports the second connecting member protrusion 522.

[0101] When the elastic member 530 applies a force to the connecting member protrusion 520 to rotate the connecting member body 510 toward the vehicle body inner side, the second protrusion 220 connected to the connecting member 500 is pulled toward the vehicle body inner side when the door 200 opens the opening 110. The direction of the force applied by the second elastic member 532 to rotate the second connecting member protrusion 522 toward the vehicle body inner side is relative to Figure 7 Corresponds to the counterclockwise direction.

[0102] When the second protrusion 220 is pulled toward the inside of the vehicle body, the portion of the door 200 connected with the second protrusion 220 is pulled toward the inside of the vehicle body. Therefore, when the door 200 moves to open the opening 110, the portion of the door 200 where the second protrusion 220 is located can be prevented from being blocked by the body 100 and preventing the opening 110 from being opened.

[0103] In addition, when the second protrusion 220 is pulled toward the outside of the vehicle body when the door 200 closes the opening 110, the portion of the door 200 to which the second protrusion 220 is connected moves later than the portion of the door 200 to which the first protrusion 210 is connected. By such movement, it is possible to prevent the portion of the door 200 to which the second protrusion 220 is connected from being blocked by the body 100 and preventing the opening 110 from being closed when the portion of the door 200 to which the second protrusion 220 is connected moves before the portion of the door 200 to which the first protrusion 210 is connected.

[0104] <Rotation Restricting Member 540>

[0105] The connecting member 500 may further include a rotation limiting member 540. The rotation limiting member 540 may be formed to have two fork teeth 540a and 540b. The connecting member protrusion 520 may be arranged between the two fork teeth 540a and 540b. The rotation limiting member 540 may limit the connecting member protrusion 520 from rotating beyond a predetermined angle or a greater angle. Here, the predetermined angle may be an angle between the two fork teeth 540a and 540b. Since the rotation limiting member 540 limits the rotation of the connecting member protrusion 520, the rotation of the connecting member body 510 connected to the connecting member protrusion 520 may also be limited.

[0106] The rotation limiting member 540 may include a first rotation limiting member 541 for limiting the rotation of the first connecting member protrusion 521. Figure 8 As shown, the first rotation limiting member 541 may be arranged in the direction where the surface of the first connecting member protrusion 521 is formed. The first rotation limiting member 541 may be arranged on the second axis A2. The first rotation limiting member 541 may prevent the connecting member 500 from excessively rotating around the conveying member protrusion 421 (which will be described below) and prevent the smooth movement of the door 200 from being hindered.

[0107] The rotation limiting member 540 may include a second rotation limiting member 542 for limiting the rotation of the second connecting member protrusion 522. Figure 7 As shown, the second rotation limiting member 542 may be formed on the same surface as the surface on which the second connecting member protrusion 522 is formed. The second rotation limiting member 542 may be arranged on the first axis A1. The second rotation limiting member 542 may prevent the connecting member 500 from excessively rotating around the second protrusion 220 and prevent the smooth movement of the door 200 from being hindered.

[0108] <Conveying member 400>

[0109] The delivery member 400 may include a column 410 and a delivery member body 420 . Fig. 9 4 is a schematic diagram showing a column 410 and a conveying component body 420 of a conveying component 400 of a door opening and closing device according to an embodiment of the present invention. The column 410 may extend in a second direction D2. The column 410 may have a thread formed on its outer peripheral surface. The column 410 may rotate around a third axis A3. The third axis A3 may refer to an axis extending in the second direction D2. The third axis A3 may be a virtual axis, rather than a component that actually exists.

[0110] The conveying member body 420 may include a conveying member protrusion 421 and a groove. The conveying member protrusion 421 may protrude from the conveying member 400 toward the connecting member 500. The conveying member protrusion 421 may be rotatably connected to the connecting member 500. The conveying member protrusion 421 may be located on the same axis as the second axis A2. A first bearing 551 for smoothly rotating the conveying member protrusion 421 may be installed on the conveying member protrusion 421. The first bearing may be arranged to be farther away from the conveying member body 420 than the first rotation limiting member 541.

[0111] A second bearing for smoothly rotating the second protrusion 220 may be mounted on the second protrusion 220. The second bearing 552 may be disposed closer to the conveying member body 420 than the second rotation restricting member 542. That is, the first bearing and the second bearing may be disposed between the first rotation restricting member 541 and the second rotation restricting member 542.

[0112] The groove may be formed to correspond to the shape of the thread. The groove may be formed on the inner wall of the hole formed through the delivery member body 420 along the second direction D2. When the column 410 rotates, the groove may move the delivery member body 410 in the second direction D2 and in the direction opposite thereto. That is, when the thread rotates as the column 410 rotates around the third axis A3, the delivery member body 420 including the groove corresponding to the shape of the thread moves in the second direction D2 or in the direction opposite to the second direction D2.

[0113] The conveying member 400 may further include a driving member 430 connected to the column 40 and providing power to rotate the column 410. The driving member 430 may include a motor 431, a first rotating member 432, a second rotating member 433, and a conveyor belt 434.

[0114] The motor 431 can provide power to rotate the column 410. The motor 431 can be a common DC or AC motor driven by electrical energy.

[0115] The first rotating member 432 may be connected to the rotating shaft of the motor 431. The first rotating member 432 may be a pulley or a gear meshed with a toothed object. The first rotating member 432 may transmit the rotating power of the rotating shaft of the motor 431 to the conveyor belt 434 to be described below, so that the second rotating member 433 rotates, which will be described below.

[0116] The second rotating member 433 may be connected to the column 410. The second rotating member 433 may be arranged on the third axis A3. The second rotating member 433 may rotate together with the rotation of the first rotating member 432. The second rotating member 433 may be operated together with the rotation of the first rotating member 432 through the conveyor belt 434, which will be described below.

[0117] In order to allow the second rotating member 433 to rotate when the first rotating member 432 rotates, the conveyor belt 434 may be formed to surround at least a portion of the first rotating member 432 and the second rotating member 433. Figure 2 As shown, the first rotating component 432 can contact the outer surface of the conveyor belt 434, and the second rotating component 433 can contact the inner surface of the conveyor belt 434. Without being limited thereto, both the first rotating component 432 and the second rotating component 433 can contact the outer surface or the inner surface of the conveyor belt 434, as long as the power of the first rotating component 432 can be transmitted to the second rotating component 433.

[0118] When the first rotating component 432 is a pulley, the second rotating component 433 may be a pulley and the conveyor belt 434 may be a flat belt 434 , and when the first rotating component 432 is a gear, the second rotating component 433 may be a gear and the conveyor belt 434 may be a timing conveyor belt 434 .

[0119] <Load detection sensor>

[0120] In the following, reference Figure 2 The load detection sensor 435 is described in detail. The motor 431 may include a load detection sensor 435 that obtains at least one of information about the first load or information about the second load. The load detection sensor 435 may be arranged inside the motor 431. The first load may refer to a load applied to the column 410 when the column 410 is subjected to resistance through its continuous rotation despite the limitation of the first stopper 330 on the fourth manipulation of the door 200 in the case where the door 200 closes the opening 110. The second load may refer to a load applied to the column 410 when the column 410 is subjected to resistance through its continuous rotation despite the limitation of the second stopper 340 on the second manipulation of the door 200 in the case where the door 200 opens the opening 110. The first load and the second load applied to the column 410 may serve as resistance to the rotational power transmitted to the first rotating member 432 by the motor 431. The load detection sensor 435 may obtain at least one of information about the first load or information about the second load and transmit it to the controller C.

[0121] The controller C may control the motor 431 to operate or stop operating based on at least one of the information about the first load or the information about the second load obtained by the load detection sensor 435. Specifically, when it is determined that the first load or the second load obtained by the load detection sensor 435 is less than a predetermined reference load, the controller C controls the motor 431 to operate. Thereafter, when it is determined that the first load or the second load obtained by the load detection sensor 435 is greater than or equal to a predetermined reference load, the controller C may control the motor 431 to stop operating. The controller C may be electrically connected to the motor 431.

[0122] The controller C may include a processor and a memory. The processor may include a microprocessor, such as a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), a central processing unit (CPU), etc. The memory may store control instructions based on which the processor generates instructions for determining whether the motor 431 is running. The memory may be a data storage device such as a hard disk drive (HDD), a solid state drive (SSD), a volatile medium, a non-volatile medium, etc.

[0123] The door opening and closing device according to an embodiment of the present invention may further include a display device 600. The display device 600 may be coupled to a surface of the main body 100 located facing the outside from the vehicle body. The display device 600 may display information related to charging. The charging-related information may include information on whether charging is performed, information on the remaining time until charging is completed, information on the remaining amount of the battery, etc.

[0124] The door opening and closing device according to an embodiment of the present invention may further include an opening and closing button 700. The opening and closing button 700 may be coupled to a surface of the main body 100 located facing the outside from the vehicle body. The opening and closing button 700 may obtain a user input related to opening and closing the door 200 and transmit it to the controller C. The user input related to opening and closing the door 200 may include an input for opening the door 200, an input for closing the door 200, and the like.

[0125] The controller C may open or close the opening 110 by controlling the door 200 based on a user input obtained by the opening and closing button 700. The opening and closing button 700 may be a general push button switch that can be pressed. The opening and closing button 700 may be a touch screen type.

[0126] <Operation of Opening Opening 110>

[0127] In the following, reference will be made to Figures 3 to 5The operation of opening the opening 110 of the door opening and closing device according to the embodiment of the present invention is described in detail.

[0128] First, the controller C obtains a command to open the opening 110, and operates the motor 431 to open the opening 110. The command to open the opening 110 may be generated by pressing the opening and closing button 700, or may be a separate command generated by interaction with another device.

[0129] Next, when the first rotating member 432 connected to the motor 431 rotates, the second rotating member 433 to which the rotating power is transmitted from the conveyor belt 434 rotates, and the column 410 connected to the second rotating member 433 rotates.

[0130] Then, when the column 410 rotates, the conveying member body 420 is forced to move along the second direction D2. Accordingly, the connecting member body 510 connected to the conveying member protrusion 421 is also forced to move along the second direction D2.

[0131] Afterwards, when the connecting component body 510 is forced to move in the second direction D2, the first protrusion 210 begins to be guided in the first direction D1 along the first guide groove 310. That is, the door 200 performs the first manipulation. In other words, the portion of the door 200 where the first protrusion 210 is located is pulled toward the inside of the vehicle body. At this time, the elastic member 530 presses the connecting component protrusion 520 toward the inside of the vehicle body. Thereafter, the connecting component body 510 rotates toward the inside of the vehicle body, and the portion of the door 200 where the second protrusion 220 is located moves together toward the inside of the vehicle body.

[0132] Thereafter, when the conveying member body 420 continues to move along the second direction D2, the first protrusion 210 begins to be guided along the second guide groove 320 after passing through the first guide groove 310. That is, the door 200 performs the second manipulation. At this time, the rotation of the connecting member body 520 is restricted by the rotation restriction member 540, so the portion of the door 200 where the second protrusion 220 is located is no longer pulled toward the inner side of the vehicle body.

[0133] Thereafter, when the first protrusion 210 meets the second stopper 340, the first protrusion 210 can no longer move in the second direction D2 due to the second stopper 340. Therefore, a resistance is generated in the direction opposite to the force that the column 410 is to rotate, thereby generating a second load. The second load is obtained by the load detection sensor 435 and transmitted to the controller C.

[0134] Finally, in a case where the second load exceeds the predetermined reference load, the controller C stops the operation of the motor 431 , thereby completing the operation of opening the opening 110 .

[0135] <Operation of Closing Opening 110>

[0136] In the following, reference will be made to Figures 3 to 5 The operation of closing the opening 110 of the door opening and closing device according to the embodiment of the present invention is described in detail.

[0137] First, the controller C obtains a command to close the opening 110, and operates the motor 431 to close the opening 110. The command to close the opening 110 may be generated by pressing the opening and closing button 700, or may be a separate command generated by interaction with another device.

[0138] Next, when the first rotating component 432 connected to the motor 431 rotates in a direction opposite to the direction in which the first rotating component 432 rotates to open the opening 110, the second rotating component 433 (rotational power is transmitted from the conveyor belt 434 to the second rotating component 433) rotates, and the column 410 connected to the second rotating component 433 rotates.

[0139] Then, when the column 410 rotates, the conveying member body 420 is forced to move in the direction opposite to the second direction D2. Therefore, the connecting member body 510 connected to the conveying member protrusion 421 is also forced to move in the direction opposite to the second direction D2.

[0140] Thereafter, when the connection member body 510 is forced to move in the direction opposite to the second direction D2, the first protrusion 210 starts to be guided in the direction opposite to the second direction D2 along the second guide groove 320. That is, the door 200 performs the third manipulation.

[0141] Thereafter, when the conveying member body 420 continues to move in the direction opposite to the second direction D2, the first protrusion 210 begins to be guided along the first guide groove 310 after passing through the second guide groove 320. That is, the door 200 performs the fourth manipulation. In other words, the portion of the door 200 where the first protrusion 210 is located is pushed toward the outside of the vehicle body. At this time, the elastic member 530 presses the connecting member protrusion 520 toward the inside of the vehicle body, so that the portion of the door 200 where the second protrusion 220 is located is tilted toward the inside of the vehicle body compared to the portion of the door 200 where the first protrusion 210 is located, and the fourth manipulation is performed.

[0142] Thereafter, when the first protrusion 210 meets the first stopper 330, the first protrusion 210 can no longer move toward the outside of the vehicle body due to the first stopper 330. Therefore, a resistance is generated in the direction opposite to the force that the column 410 is to rotate, thereby generating a first load. The first load is obtained by the load detection sensor 435 and transmitted to the controller C. The first protrusion 210 can be used as a rotation axis of the door 200, and the movement of the first protrusion 210 can be limited by the first stopper 330. Since the conveying member body 420 attempts to continuously move in the direction opposite to the second direction D2 when the column 410 continues to rotate, the force that the conveying member body 420 is to move in the direction opposite to the second direction D2 becomes greater than the force of the elastic member 530 pressing the connecting member protrusion 520 toward the inside of the vehicle body. The portion of the door 200 where the second protrusion 220 is located rotates toward the outside of the vehicle body with the first protrusion 210 as the rotation axis. As the portion of the door 200 where the second protrusion 220 is located and inclined toward the inner side of the vehicle body rotates toward the outer side of the vehicle body, the opening 110 may be completely closed.

[0143] Finally, in a case where the first load exceeds the predetermined reference load, the controller C stops the operation of the motor 431 , thereby completing the operation of closing the opening 110 .

[0144] According to the present invention, when the door opens the charging port, the door is opened in a manner that the door is moved into the inner space of the vehicle body. Therefore, the interference of the door with the outer side of the vehicle body can be minimized.

[0145] In addition, according to the present invention, when the door opens the charging port, the door is opened in such a manner that the door is first manipulated toward the inside of the vehicle body, and thereafter second manipulated in a direction different from the first manipulated. Therefore, the door does not block the charging socket, and thus when the charging connector enters the charging port, interference caused by the door can be minimized.

[0146] In the above, although the present invention has been described with reference to exemplary forms and drawings, the present invention is not limited thereto, but can be variously modified and changed by a person skilled in the art to which the present invention belongs without departing from the spirit and scope of the present invention claimed by the attached claims. Therefore, the exemplary scheme of the present invention is provided to explain the spirit and scope of the present invention, rather than to limit the spirit and scope of the present invention, and therefore the spirit and scope of the present invention are not limited by these embodiments. The scope of the present invention should be interpreted based on the attached claims, and all technical ideas within the scope equivalent to the claims should be included within the scope of the present invention.

Claims

1. A door opening and closing device, comprising: a body configured to define an opening and an interior space, wherein the opening is configured to be open toward the outside of the vehicle body, and the interior space is defined inside the vehicle body and communicates with the opening; a door configured to open and close the opening; a single guide member disposed in the interior space and configured to guide the door so that the door moves in a first direction and a direction opposite to the first direction, wherein the first direction is a direction from the outer side of the vehicle body to the inner side of the vehicle body; and a conveying member disposed in the interior space and configured to move the door in a second direction and a direction opposite to the second direction, wherein the second direction is a direction different from the first direction and away from the door; wherein, when the door changes from a first state closing the opening to a second state opening the opening, the door is configured to perform a first manipulation to move in a first direction by being guided by a guide member, and thereafter to perform a second manipulation to move in a second direction by a conveying member; When the door is changed from the second state to the first state, the door is configured to perform a third operation to move in a direction opposite to the second direction by the conveying member, and thereafter perform a fourth operation to move in a direction opposite to the first direction by being guided by the guide member, wherein the guide component comprises a first guide groove and a second guide groove extending from the first guide groove, The door includes a first protrusion that protrudes from the door toward the guide member and is configured to be movably inserted into the first guide groove or the second guide groove; The door opening and closing device further includes a connecting member configured to connect the door and the conveying member and rotatably connected to the door and the conveying member, The connecting component includes a connecting component body, and the connecting component body is configured to connect the conveying component and a second protrusion protruding from the door toward the conveying component. The connecting member body is connected to the second protrusion so as to be rotatable about the first axis, and is connected to the conveying member so as to be rotatable about a second axis parallel to the first axis; Wherein, the connecting component further comprises: a connecting member protrusion that protrudes from the connecting member body in at least one direction in which the first axis extends or in a direction opposite to the direction in which the first axis extends; and an elastic member configured to elastically and torsionally support the connecting member protrusion so as to apply a force to the connecting member protrusion that rotates the connecting member body toward the inner side of the vehicle body; The conveying component comprises: a column extending in the second direction and having threads formed on an outer peripheral surface thereof, the column being rotatable about a third axis aligned with the second direction; and a conveying member body including a conveying member protrusion and a groove, the conveying member protrusion protruding from the conveying member toward the connecting member and enabling the connecting member to be rotatably connected to the conveying member protrusion, the groove corresponding to the shape of the screw thread; Wherein, when the column rotates, the groove moves the conveying component body in the second direction and in a direction opposite to the second direction.

2. The door opening and closing device according to claim 1, in, The second guide groove extends in a second direction, The first guide groove is configured to be bent toward the opening from a distal end of the second guide groove based on a direction opposite to the second direction.

3. The door opening and closing device according to claim 2, wherein: The guide member further includes a first stopper disposed at a distal end of the first guide groove based on a direction opposite to the first direction, the first stopper configured to limit movement of the first protrusion.

4. The door opening and closing device according to claim 2, wherein: The guide member further includes a second stopper disposed at a distal end of the second guide groove based on the second direction, the second stopper configured to limit movement of the first protrusion.

5. The door opening and closing device according to claim 1, wherein: The connecting member further comprises a rotation limiting member comprising two prongs, the rotation limiting member being arranged such that the connecting member protrusion is arranged between the two prongs, The rotation limiting component limits the protrusion of the connecting component from rotating beyond a predetermined angle or greater.

6. The door opening and closing device according to claim 1, wherein The conveying component further includes a driving component connected to the column and configured to provide power to rotate the column. Wherein, the driving component comprises: a motor configured to provide power to rotate the column; a first rotating member connected to a rotating shaft of the motor; a second rotating member connected to the column and configured to rotate in conjunction with the rotation of the first rotating member; and The conveyor belt surrounds at least a portion of the first rotating component and the second rotating component so that the second rotating component rotates with the rotation of the first rotating component.

7. The door opening and closing device according to claim 6, wherein: The guide component further comprises: a first stopper configured to limit a fourth manipulation of the door; and a second stopper configured to limit a second manipulation of the door; wherein the motor comprises a load detection sensor configured to obtain at least one of information about the first load or information about the second load, The first load is configured to be applied to the column by continuous rotation of the column when the door closes the opening and the first stopper restricts the fourth manipulation, The second load is configured to be applied to the column by continuous rotation of the column when the door opens the opening and the second stopper restricts the second manipulation.

8. The door opening and closing device according to claim 1, further comprising: A display device configured to display information related to charging is coupled to a surface of the main body facing outward from the vehicle body.

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