Charging door device for vehicle

Abstract

Disclosed is a charging door device for a vehicle. The charging door device for a vehicle disclosed herein, according to an exemplary embodiment of the present invention, is configured to open and close an opening of an inlet housing coupled to a charging inlet assembly through a charging door, and comprises: i) an actuator fixed to the inlet housing; ii) a lead screw which is detachably coupled to an output shaft of the actuator and is rotatably supported by the inlet housing; iii) a cylindrical movable shaft which is fixed to the edge of the charging door and is screw-coupled to the lead screw; and iv) a cylindrical guide housing which is fixed to the inlet housing and is connected to the movable shaft via a cam unit such that the movable shaft rotates while moving forward and backward along the axial direction of the lead screw.

Description

Vehicle charging door device

[0001] This application claims the benefit of priority based on Korean Patent Application No. 10-2024-0125751 filed September 13, 2024, and all contents disclosed in the literature of said Korean patent applications are incorporated herein as part of this specification.

[0002] An embodiment of the present invention relates to an electric vehicle, and more specifically, to a charging door device for a vehicle configured to open and close a charging inlet assembly of an electric vehicle.

[0003] Due to recently strengthened environmental and fuel efficiency regulations, the use of eco-friendly vehicles such as hybrid and electric vehicles is increasing.

[0004] For eco-friendly vehicles, securing sufficient high-voltage battery capacity is crucial because the vehicle is primarily driven by a motor instead of an engine.

[0005] In the case of hybrid vehicles, the engine is driven to charge the high-voltage battery, whereas in the case of electric vehicles, the high-voltage battery is charged by an external power source.

[0006] Here, the electric vehicle is equipped with a charging inlet for charging the high-voltage battery. When a charging connector connected to an external power source is coupled to the charging inlet, electrical energy is supplied from the external power source to the high-voltage battery, thereby charging the high-voltage battery.

[0007] The charging inlet may be mounted on the front body, rear body, or side body depending on the type of vehicle. The charging inlet is mounted in an inlet housing as a fixed part secured to the body. The inlet housing can be opened and closed by a charging door as a moving part.

[0008] Recently, electric charging door devices are being applied that operate the charging door using an electric actuation mechanism and automatically open and close the inlet housing.

[0009] An electric charging door device according to an example of the prior art is structured to open and close the inlet housing by rotating the charging door, which is hinged to the inlet housing, in a swing rotation manner by means of an electric operating mechanism.

[0010] Here, the electric actuation mechanism comprises an actuator, such as a motor, and a power transmission unit, such as a gear assembly or a link assembly, that transmits the driving force of the actuator to the charging door.

[0011] However, according to the conventional technology, the power transmission unit that transmits the driving force of the actuator to the swing rotational force of the charging door has a complex structure, which increases the weight and manufacturing cost of the charging door device and may reduce the assembly workability of the charging door device.

[0012] The matters described in this background technology section are written to enhance understanding of the background of the invention and may include matters that are not prior art already known to those skilled in the art to which this technology belongs.

[0013] Embodiments of the present invention provide a vehicle charging door device that enables the charging door to be opened and closed in a forward-and-backward movement method and a rotary rotation method using an electric operating mechanism of a simple configuration.

[0014] A vehicle charging door device according to an embodiment of the present invention is configured to open and close an opening of an inlet housing coupled to a charging inlet assembly through a charging door, and may include: i) an actuator fixed to the inlet housing; ii) a lead screw detachably coupled to the output shaft of the actuator and rotatably supported in the inlet housing; iii) a cylindrical movable shaft fixed to the edge of the charging door and screw-coupled with the lead screw; and iv) a cylindrical guide housing fixed to the inlet housing and connected to the movable shaft through a cam unit so that the movable shaft rotates while moving forward and backward along the axial direction of the lead screw.

[0015] In addition, the vehicle charging door device according to an embodiment of the present invention may further include a screw support member that is fixed to the inlet housing to support the lead screw coupled to the output shaft and coupled to the guide housing.

[0016] In addition, in the vehicle charging door device according to an embodiment of the present invention, the actuator may be coupled to a plurality of fastening protrusions protruding from the actuator mounting surface of the inlet housing.

[0017] In addition, in the vehicle charging door device according to an embodiment of the present invention, the screw support member may be disposed between the actuator mounting surface of the inlet housing and the actuator.

[0018] In addition, in the vehicle charging door device according to an embodiment of the present invention, the lead screw may include a screw portion screw-coupled to the inner circumference of the movable shaft, a flange portion formed at one end of the screw portion, and a coupling projection portion extending from the flange portion and directly connected to the output shaft.

[0019] In addition, in the vehicle charging door device according to an embodiment of the present invention, the screw support member may include a cup-shaped flange support portion having a screw coupling hole formed therein into which the other end of the screw portion is fitted to support the flange portion, and a plurality of support rib portions extending from the edge of the flange support portion and fastened to the guide housing and the inlet housing.

[0020] In addition, in the vehicle charging door device according to an embodiment of the present invention, the guide housing may include a housing body portion coupled to a cylindrical boss portion formed in the inlet housing, and a plurality of support rib portions extending from the edge of one end of the housing body portion and fastened to the screw support member and the inlet housing.

[0021] In addition, in the vehicle charging door device according to an embodiment of the present invention, the movable shaft can be fitted into the hollow of the housing body through the other end of the housing body.

[0022] In addition, in the vehicle charging door device according to an embodiment of the present invention, one end of the movable shaft can be fastened to the edge of the charging door through a plurality of support rib portions.

[0023] In addition, in the vehicle charging door device according to an embodiment of the present invention, a slip member may be coupled to the other end of the movable shaft.

[0024] In addition, in the vehicle charging door device according to an embodiment of the present invention, the slip member may include a slip ring portion that slips in contact with the inner circumferential surface of the housing body portion, and a plurality of hook coupling portions that protrude from the slip ring portion and hook-couple to the other end of the movable shaft.

[0025] In addition, in the vehicle charging door device according to an embodiment of the present invention, hook coupling grooves and hook protrusions that engage with the hook coupling parts may be formed at the other end of the movable shaft.

[0026] In addition, in the vehicle charging door device according to an embodiment of the present invention, the hook coupling portions may have a hook coupling hole formed therein capable of hook coupling with the hook protrusions.

[0027] In addition, in the vehicle charging door device according to an embodiment of the present invention, the cam unit may include at least one cam profile formed along the axial direction on the outer circumference of the movable shaft and consisting of a straight section and a helical section connected to each other, and at least one cam lobe fixed to the guide housing to make cam contact with the at least one cam profile on the inner circumference of the guide housing.

[0028] In addition, in the vehicle charging door device according to an embodiment of the present invention, the at least one cam profile may include a first cam follower groove formed in the straight section and a second cam follower groove formed in the helical section that is connected to the first cam follower groove.

[0029] In addition, in the vehicle charging door device according to an embodiment of the present invention, the at least one cam lobe may include a lobe base portion coupled to the guide housing and a cam projection portion protruding from the lobe base portion.

[0030] In addition, in the vehicle charging door device according to an embodiment of the present invention, the guide housing may include a projection coupling hole coupled to the cam projection and a base coupling groove formed at the edge portion of the projection coupling hole and coupled to the lobe base portion.

[0031] In addition, in the vehicle charging door device according to an embodiment of the present invention, the output shaft of the actuator, the lead screw, the guide housing, and the movable shaft may be arranged coaxially.

[0032] In addition, in the vehicle charging door device according to an embodiment of the present invention, when the output shaft of the actuator rotates in one direction, the lead screw rotates in one direction, and the movable shaft moves forward along the straight section by means of the at least one cam lobe that makes cam contact with the straight section of the at least one cam profile, and the movable shaft moves forward along the helical section by means of the at least one cam lobe that makes cam contact with the helical section of the at least one cam profile and rotates, and the charging door can open the opening of the inlet housing.

[0033] In addition, in the vehicle charging door device according to an embodiment of the present invention, when the output shaft of the actuator rotates in the other direction, the lead screw rotates in the other direction, and the movable shaft rotates while moving backward along the helical section by means of the at least one cam lobe that cam contacts the helical section of the at least one cam profile, and the movable shaft moves backward along the straight section by means of the at least one cam lobe that cam contacts the straight section of the at least one cam profile, and the charging door can close the opening of the inlet housing.

[0034] In addition, in the vehicle charging door device according to an embodiment of the present invention, the actuator may include an actuator housing coupled to the inlet housing, a servo motor installed in the actuator housing, a power transmission gear group connected to the servo motor, an output gear connected to the power transmission gear group and coupled to the output shaft, and a friction clutch ring that is press-fitted into the output shaft and pressed against the inner circumference of a shaft hole formed in the output gear with a frictional force set thereon.

[0035] In addition, in the vehicle charging door device according to an embodiment of the present invention, the friction clutch ring may include a plurality of friction protrusions formed to protrude radially outwardly to be in close contact with the inner circumferential surface of the shaft hole.

[0036] In addition, in the vehicle charging door device according to an embodiment of the present invention, when a manual rotational force greater than the frictional force of the friction clutch ring is applied to the movable shaft along the opening and closing direction of the charging door, the manual rotational force is transmitted to the lead screw through the guide housing, the friction clutch ring slides together with the output shaft, and the lead screw can be rotated by the output shaft in the opening and closing direction of the charging door.

[0037] According to the vehicle charging door device of the embodiments of the present invention, the size of the charging door package can be reduced, assembly workability in the finished vehicle assembly inline can be increased, and assembly workability and design freedom of parts can be increased by securing additional layout space.

[0038] Furthermore, other effects that can be obtained or predicted by the embodiments of the present invention will be disclosed directly or implicitly in the detailed description of the embodiments of the present invention. That is, various effects predicted according to the embodiments of the present invention will be disclosed within the detailed description to be set forth below.

[0039] These drawings are for reference to explain exemplary embodiments of the present invention, and therefore, the technical concept of the present invention should not be interpreted as being limited to the attached drawings.

[0040] FIG. 1 is a drawing illustrating a vehicle charging door device according to an embodiment of the present invention.

[0041] FIG. 2 is a drawing illustrating the opening and closing structure of a charging door applied to a vehicle charging door device according to an embodiment of the present invention.

[0042] FIGS. 3 and FIGS. 4 are exploded perspective views illustrating a vehicle charging door device according to an embodiment of the present invention.

[0043] FIG. 5 is a drawing illustrating an actuator applied to a vehicle charging door device according to an embodiment of the present invention.

[0044] FIG. 6 is a drawing illustrating a lead screw applied to a vehicle charging door device according to an embodiment of the present invention.

[0045] FIGS. 7 and 8 are drawings illustrating a screw support member applied to a vehicle charging door device according to an embodiment of the present invention.

[0046] FIGS. 9 to 11 are drawings illustrating a movable shaft applied to a vehicle charging door device according to an embodiment of the present invention.

[0047] FIG. 12 is a drawing illustrating a guide housing applied to a vehicle charging door device according to an embodiment of the present invention.

[0048] FIGS. 13 and 14 are drawings illustrating the combined structure of a guide housing and a movable shaft applied to a charging door device for a vehicle according to an embodiment of the present invention.

[0049] FIG. 15 is a drawing illustrating a cam unit applied to a vehicle charging door device according to an embodiment of the present invention.

[0050] FIGS. 16 to 18 are drawings for explaining the operation of a vehicle charging door device according to an embodiment of the present invention.

[0051] FIG. 19 is an exploded perspective view illustrating an actuator applied to a vehicle charging door device according to an embodiment of the present invention.

[0052] FIG. 20 is a combined cross-sectional view illustrating an actuator applied to a vehicle charging door device according to an embodiment of the present invention.

[0053] FIG. 21 is a perspective view illustrating a friction clutch ring of an actuator applied to a vehicle charging door device according to an embodiment of the present invention.

[0054] FIG. 22 is a drawing for explaining the operation of an actuator applied to a vehicle charging door device according to an embodiment of the present invention.

[0055] The drawings referenced above are not necessarily drawn to scale and should be understood as presenting somewhat simplified representations of various preferred features illustrating the basic principles of the invention. For example, specific design features of the invention, including specific dimensions, orientations, positions, and shapes, will be partially determined by specific intended applications and usage environments.

[0056] The terms used herein are for the purpose of describing specific embodiments and are not intended to limit the invention. As used herein, the singular form is also intended to include the plural forms unless the context clearly indicates otherwise.

[0057] And, it should also be understood that the terms “comprising” and / or “comprising” as used in this specification indicate the presence of the specified features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, components and / or groups thereof.

[0058] Additionally, as used in this specification, the term 'combined' indicates a physical relationship between two components that are directly connected to each other or indirectly connected through one or more mediating components.

[0059] Furthermore, in this specification, the term 'operably connected' or a similar term means that at least two members are directly or indirectly connected to each other to transmit power.

[0060] Furthermore, 'vehicle', 'of a vehicle', 'automobile', or other similar terms used herein generally include passenger automobiles, including sports cars, sports utility vehicles (SUVs), buses, trucks, and various commercial vehicles, and may include electric vehicles and electric vehicle-based Purpose Built Vehicles (PBVs).

[0061] Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings.

[0062] FIG. 1 is a drawing illustrating a vehicle charging door device according to an embodiment of the present invention.

[0063] Referring to FIG. 1, a vehicle charging door device (100) according to an embodiment of the present invention is applied to an electric vehicle and can be mounted at a set location on the electric vehicle.

[0064] A vehicle charging door device (100) according to an embodiment of the present invention is configured to open and close an inlet housing (10) coupled with a charging inlet assembly (1) through a charging door (20).

[0065] Here, the charging inlet assembly (1) is electrically connected to a high-voltage battery (not shown) mounted on an electric vehicle. A charging connector (not shown) may be connected to the charging inlet assembly (1). Accordingly, when the charging connector is connected to the charging inlet assembly (1), electrical energy can be charged into the high-voltage battery.

[0066] Furthermore, the vehicle charging door device (100) according to an embodiment of the present invention may be mounted on various electric power vehicles other than electric vehicles.

[0067] An inlet housing (10) applied to a vehicle door charging device (100) according to an embodiment of the present invention can be combined with a charging inlet assembly (1) mounted at a set location of an electric vehicle. The inlet housing (10) can be mounted on a bumper cover or a vehicle body panel at a location corresponding to the charging inlet assembly (1).

[0068] This inlet housing (10) includes an opening (11) that is coupled to a filling inlet assembly (1).

[0069] Here, the inlet housing (10) may include various auxiliary elements such as plates, brackets, ribs, and bulkheads. Since the above auxiliary elements are intended to install various components to be described below into the inlet housing (10), in the embodiments of the present invention, the above auxiliary elements are collectively referred to as the inlet housing (10), except in exceptional cases.

[0070] The charging door (20) is configured to open or close the opening (11) of the inlet housing (10). The charging door (20) may include an inner door panel and an outer door panel joined together.

[0071] In the embodiments of the present invention, the vertical direction is set as the reference direction when referring to the drawings, and the components described below are explained. However, the above-mentioned reference direction may be set differently, such as the front-rear direction of the vehicle body and the width direction, depending on the mounting position of the vehicle charging door device (100) according to the embodiments of the present invention.

[0072] Additionally, in this specification, the ‘upper part,’ ‘upper,’ ‘upper,’ or ‘upper surface’ of a component refers to an end, part, end, or surface of a component located relatively higher in the drawing, and the ‘lower part,’ ‘lower,’ ‘lower,’ or ‘lower surface’ of a component refers to an end, part, end, or surface of a component located relatively lower in the drawing.

[0073] Furthermore, in this specification, an end of a component (e.g., one end or the other end, etc.) indicates an end of the component in any one direction, and an end portion of a component (e.g., one end or the other end, etc.) indicates a certain part of the component including the end.

[0074] Meanwhile, the vehicle charging door device (100) according to an embodiment of the present invention is configured to open and close the charging door (20) through an electric operating mechanism.

[0075] As shown in FIG. 2, the charging door (20) moves in a straight line for a certain distance by means of an electric operating mechanism, and moves forward and backward while rotating in a rotary manner for a certain distance by means of an electric operating mechanism, and can open and close the opening (11) (hereinafter, see FIG. 1) of the inlet housing (10).

[0076] To elaborate, the charging door (20) can open the opening (11) of the inlet housing (10) by moving straight upward by means of an electric operating mechanism (S2) when the opening (11) of the inlet housing (10) is closed (S1), and by moving forward upward by means of an electric operating mechanism (S3) (refer to the solid line arrow in the drawing).

[0077] Additionally, the charging door (20) can close the opening (11) of the inlet housing (10) by rotating in the other direction and moving backward in the downward direction by means of an electric operating mechanism (S3) when the opening (11) of the inlet housing (10) is open (S1) (refer to the dotted arrow in the drawing).

[0078] The vehicle charging door device (100) according to the embodiment of the present invention provides a structure that can open and close the charging door (20) with an electric operating mechanism of a simple configuration.

[0079] Furthermore, the vehicle charging door device (100) according to an embodiment of the present invention can increase assembly workability in the finished vehicle assembly inline and can provide a structure that increases assembly workability and design freedom of parts.

[0080] Furthermore, the vehicle charging door device (100) according to an embodiment of the present invention can provide a structure that allows for the substantial sharing of an electric operating mechanism (e.g., an actuator) in response to package conditions of different charging doors (20) according to the specifications of the electric vehicle.

[0081] FIGS. 3 and FIGS. 4 are exploded perspective views illustrating a vehicle charging door device according to an embodiment of the present invention.

[0082] Referring to FIGS. 3 and 4, a vehicle charging door device (100) according to an embodiment of the present invention includes an actuator (30), a lead screw (40), a screw support member (50), a movable shaft (60), and a guide housing (80).

[0083] In an embodiment of the present invention, the actuator (30) is configured to apply an electric opening and closing operating force to the charging door (20). The actuator (30) is fixed to the inlet housing (10).

[0084] FIG. 5 is a drawing illustrating an actuator applied to a vehicle charging door device according to an embodiment of the present invention.

[0085] Referring to FIG. 5, the actuator (30) according to an embodiment of the present invention includes an actuator housing (31), a servo motor (33), and an output shaft (35).

[0086] The actuator housing (31) is mounted on the actuator mounting surface (13) (lower surface based on the drawing) of the inlet housing (10).

[0087] The actuator housing (31) is coupled to a plurality of fastening protrusions (15) protruding from the actuator mounting surface (13) of the inlet housing (10). The actuator housing (31) is positioned at a set distance from the actuator mounting surface (13) of the inlet housing (10) by means of the fastening protrusions (15). The actuator housing (31) can be fastened to the fastening protrusions (15) by means of a fastening member composed of a combination of a bolt and a nut.

[0088] The above servo motor (33) is mounted inside the actuator housing (31). The above servo motor (33) may be equipped with a motor capable of servo control of rotation direction and rotation speed.

[0089] And, the output shaft (35) is operatively connected to a servo motor (33) and can be rotated in one direction and the other direction (e.g., forward and reverse directions) by driving the servo motor (33).

[0090] Here, the output shaft (35) has a set shape, for example, a square shape, a keyway (37) formed therein.

[0091] Referring to FIGS. 3 and 4, in an embodiment of the present invention, the lead screw (40) is detachably coupled to the output shaft (35) of the actuator (30) as shown in FIG. 5 and is rotatably supported in the inlet housing (10).

[0092] FIG. 6 is a drawing illustrating a lead screw applied to a vehicle charging door device according to an embodiment of the present invention.

[0093] Referring to FIG. 6, the lead screw (40) according to an embodiment of the present invention includes a screw portion (41), a flange portion (43), and a coupling projection portion (45).

[0094] The above screw portion (41) includes a male screw thread (47) formed along the vertical direction at a set pitch based on the drawing.

[0095] The above flange portion (43) is formed at one end (lower end based on the drawing) of the screw portion (41).

[0096] And, the coupling projection (45) extends from the flange portion (43) and is directly connected to the output shaft (35) of the actuator (30). The coupling projection (45) is formed, for example, in a square cross-sectional shape and can be detachably coupled to the keyway (37) of the output shaft (35).

[0097] Referring to FIGS. 3 to 5, in an embodiment of the present invention, the screw support member (50) is configured to support a lead screw (40) that is coupled to the output shaft (35) of the actuator (30).

[0098] The screw support member (50) is fixed to the actuator mounting surface (13) of the inlet housing (10) and can be combined with the guide housing (80) to be described later.

[0099] FIGS. 7 and 8 are drawings illustrating a screw support member applied to a vehicle charging door device according to an embodiment of the present invention.

[0100] Referring to FIGS. 7 and 8, the screw support member (50) according to an embodiment of the present invention is positioned between the actuator mounting surface (13) of the inlet housing (10) and the actuator (30).

[0101] That is, the screw support member (50) is positioned between the actuator mounting surface (13) and the actuator (30), which are separated by the fastening protrusions (15) of the inlet housing (10).

[0102] This screw support member (50) includes a flange support portion (51) and a plurality of first support rib portions (53).

[0103] The above flange support (51) is configured to support the flange portion (43) of the lead screw (40). Based on the drawing, the above flange support (51) can support the upper surface of the flange portion (43) through its lower surface.

[0104] In one example, the above flange support (51) may be provided in a cup shape. A screw coupling hole (55) is formed in the flange support (51) into which the other end (upper end, based on the drawing) of the screw portion (41) of the lead screw (40) is fitted.

[0105] And, the first support rib portions (53) extend from the edge of the flange support portion (51). The first support rib portions (53) can be fastened to the actuator mounting surface (13) of the inlet housing (10) and the guide housing (80) to be described later by a plurality of bolts (57).

[0106] Referring to FIGS. 3 and 4, in an embodiment of the present invention, the movable shaft (60) is provided in a cylindrical shape, is fixed to the edge of the charging door (20), and is screw-coupled with a lead screw (40).

[0107] FIGS. 9 to 11 are drawings illustrating a movable shaft applied to a vehicle charging door device according to an embodiment of the present invention.

[0108] Referring to FIGS. 9 to 11, the movable shaft (60) according to an embodiment of the present invention is connected to the edge of the charging door (20) through one end (upper end, based on the drawing).

[0109] Here, the movable shaft (60) includes a plurality of second support rib portions (63) formed at one end.

[0110] This movable shaft (60) passes through a through hole (23) formed at the edge of the inner door panel (21) of the charging door (20) through the other end.

[0111] And, the second support rib portions (63) are fastened to the inner door panel (21) by a plurality of bolts (65), and the inner door panel (21) is combined with the outer door panel (22).

[0112] Furthermore, the above-mentioned movable shaft (60) further includes a hollow (67) with both ends open and a female screw thread (68) formed on the inner surface of the hollow (67).

[0113] Here, the screw portion (41) of the lead screw (40) is fitted into the hollow (67) of the movable shaft (60) and can be screw-coupled to the female screw thread (68) of the movable shaft (60) through the male screw thread (47).

[0114] Referring to FIGS. 3 and 4, in an embodiment of the present invention, the guide housing (80) is configured so that the movable shaft (60) moves forward and backward along the axial direction of the lead screw (40) through the lead screw (40) which is rotated by the driving of the actuator (30).

[0115] The guide housing (80) is connected to the movable shaft (60) and fixed to the inlet housing (10).

[0116] FIG. 12 is a drawing illustrating a guide housing applied to a vehicle charging door device according to an embodiment of the present invention.

[0117] Referring to FIG. 12, the guide housing (80) according to an embodiment of the present invention is provided in a cylindrical shape having a hollow (81) with both ends open. This guide housing (80) includes a housing body part (83) and a plurality of third support rib parts (85).

[0118] The above housing main body (83) forms a hollow (81) and is coupled to a boss portion (17) formed in the inlet housing (10). The above housing main body (83) is fitted into the boss portion (17) on the actuator mounting surface (13) side of the inlet housing (10).

[0119] The above third support ribs (85) support the actuator mounting surface (13) of the inlet housing (10) and are configured to fix the guide housing (80) to the actuator mounting surface (13).

[0120] The above third support ribs (85) extend from the edge of one end (lower end based on the drawing) of the housing body (83) and are fastened to the actuator mounting surface (13) of the inlet housing (10).

[0121] Here, the third support rib portions (85) can be fastened to the first support rib portions (53) and the actuator mounting surface (13) of the screw support member (50) mentioned above by means of a plurality of bolts (57).

[0122] FIGS. 13 and 14 are drawings illustrating the combined structure of a guide housing and a movable shaft applied to a charging door device for a vehicle according to an embodiment of the present invention.

[0123] Referring to FIGS. 13 and 14, a movable shaft (60) is fitted into the hollow (81) of the housing body part (83) of the guide housing (80). The movable shaft (60) is fitted into the hollow (81) through the other end (upper part, based on the drawing) of the housing body part (83).

[0124] Furthermore, the above-mentioned movable shaft (60) can be slidably coupled to the inner circumference of the housing body part (83) of the guide housing (80) by means of a slip member (70) coupled to the other end (lower end, based on the drawing).

[0125] The above-described slip member (70) includes a slip ring portion (71) and a plurality of hook coupling portions (73).

[0126] The above slip ring portion (71) is provided in a ring shape and makes slip contact with the inner circumference of the housing body portion (83).

[0127] And, the above hook coupling portions (73) protrude from the upper surface of the slip ring portion (71) based on the drawing and are hook-coupled to the other end of the movable shaft (60).

[0128] In order to hook-couple such a slip member (70) to the other end of the movable shaft (60), the movable shaft (60) includes hook coupling grooves (75) and hook protrusions (77) formed at the other end.

[0129] The above hook coupling grooves (75) and hook protrusions (77) are configured to hook-couple the hook coupling portions (73) of the slip member (70) to the other end of the movable shaft (60). Here, the hook protrusions (77) are formed in the groove areas of the hook coupling grooves (75).

[0130] Furthermore, the above-mentioned hook coupling parts (73) include hook protrusions (77) and hook coupling holes (79) capable of hook coupling.

[0131] Meanwhile, in an embodiment of the present invention, the movable shaft (60) and the guide housing (80) can be connected through a cam unit (90) as shown in FIG. 15 so that the movable shaft (60) rotates while moving forward and backward along the axial direction of the lead screw (40).

[0132] FIG. 15 is a drawing illustrating a cam unit applied to a vehicle charging door device according to an embodiment of the present invention.

[0133] Referring to FIG. 15, the cam unit (90) according to an embodiment of the present invention includes at least one cam profile (91) formed on a movable shaft (60) and at least one cam lobe (93) provided on a guide housing (80).

[0134] The above at least one cam profile (91) is formed along the axial direction on the outer surface of the movable shaft (60) and consists of a straight section (92a) and a helical section (92b) connected to each other.

[0135] At least one cam profile (91) includes a first cam follower groove (95a) and a second cam follower groove (95b).

[0136] The first cam follower groove (95a) is formed in a straight section (92a) and is formed in a straight line from one end of the movable shaft (60) toward the other end. The second cam follower groove (95b) is connected to the first cam follower groove (95a) and is formed in a helical shape in a helical section (92b).

[0137] The above at least one cam lobe (93) is fixed to the housing body part (83) of the guide housing (80) so as to make cam contact with at least one cam profile (91) on the inner circumferential side of the guide housing (80).

[0138] The above at least one cam lobe (93) includes a lobe base portion (97) and a cam projection portion (99).

[0139] The above lobe base portion (97) is coupled to the housing body portion (83) of the guide housing (80). The above lobe base portion (97) is coupled to the outer surface of the housing body portion (83) and is provided in the form of a block that forms the same surface as the outer surface.

[0140] The above cam projection (99) is formed to protrude in a ball shape from the lobe base (97) so as to make cam contact with at least one cam profile (91).

[0141] In order to fix the above at least one cam lobe (93) to the housing body part (83) of the guide housing (80), the guide housing (80) includes a projection coupling hole (94) formed in the housing body part (83) and a base coupling groove (96).

[0142] The above-mentioned projection coupling hole (94) is formed as a circular hole that is coupled with the cam projection (99). And, the above-mentioned base coupling groove (96) is formed at the edge portion of the projection coupling hole (94) to be coupled with the lobe base portion (97).

[0143] Hereinafter, the assembly process / structure and operation of a vehicle charging door device (100) according to an embodiment of the present invention configured as above will be described in detail with reference to FIGS. 1 to 15 and the attached drawings.

[0144] First, in an embodiment of the present invention, an inlet housing (10) and a charging door (20) are provided. A movable shaft (60) is connected to the edge of the charging door (20).

[0145] Here, the movable shaft (60) is connected to the edge of the charging door (20) through the second support rib portion (63) at one end. And, a slip member (70) is hook-connected to the other end of the movable shaft (60). Furthermore, at least one cam profile (91) of a cam unit (90) is formed on the outer surface of the movable shaft (60).

[0146] Next, in an embodiment of the present invention, the housing body portion (83) of the guide housing (80) is fitted into the boss portion (17) of the inlet housing (10) on the side of the actuator mounting surface (13) of the inlet housing (10). At this time, the third support rib portions (85) of the guide housing (80) support the actuator mounting surface (13) of the inlet housing (10).

[0147] Next, in an embodiment of the present invention, the first support rib portions (53) of the screw support member (50) are fastened to the third support rib portions (85) of the guide housing (80) through bolts (57) on the actuator mounting surface (13) side of the inlet housing (10).

[0148] At this time, the bolts (57) are fastened to the first support ribs (53) and the third support ribs (85), and are fastened to the actuator mounting surface (13) of the inlet housing (10). Then, the flange support portion (51) of the screw support member (50) is connected to the hollow (81) of the guide housing (80) through the screw coupling hole (55).

[0149] Here, at least one cam lobe (93) of the cam unit (90) is fixed to the housing body part (83) of the guide housing (80).

[0150] Then, in an embodiment of the present invention, the other end of the movable shaft (60) as described above is fitted into the hollow (81) of the housing body part (83) of the guide housing (80) through the slip member (70).

[0151] Accordingly, the at least one cam lobe (93) is cam-contacted with at least one cam profile (91) on the outer surface of the movable shaft (60), and the movable shaft (60) and the guide housing (80) are connected through the cam unit (90). Also, the hollow (67) of the movable shaft (60) is connected to the hollow (81) of the guide housing (80).

[0152] Next, in an embodiment of the present invention, the screw portion (41) of the lead screw (40) is fitted into the screw coupling hole (55) of the flange support portion (51) of the screw support member (50) and is screw-coupled to the inner circumference of the movable shaft (60) through the hollow (67) of the movable shaft (60). At this time, the flange portion (43) of the lead screw (40) is supported by the flange support portion (51).

[0153] Next, in an embodiment of the present invention, the actuator housing (31) of the actuator (30) is coupled to the coupling protrusions (15) protruding from the actuator mounting surface (13) of the inlet housing (10). At this time, the coupling protrusion (45) of the lead screw (40) is coupled to the keyway (37) of the output shaft (35) of the actuator (30).

[0154] Here, the lead screw (40) is rotatably supported on the screw support member (50) while being coupled to the output shaft (35) of the actuator (30) through the coupling projection (45).

[0155] Accordingly, a vehicle charging door device (100) according to an embodiment of the present invention can be assembled through a series of processes as described above. Here, the output shaft (35), lead screw (40), movable shaft (60), and guide housing (80) of the actuator (30) as described above are arranged coaxially.

[0156]

[0157] Furthermore, the movable shaft (60) and guide housing (80) described above are substantially positioned inside the inlet housing (10), and the actuator (30) is positioned on the actuator mounting surface (13) outside the inlet housing (10).

[0158] And, the actuator (30) described above can be coupled to and separated from the inlet housing (10). In addition, the lead screw (40) described above is screw-coupled to the movable shaft (60) while supported by the screw support member (50) and can be attached to and detached from the output shaft (35) of the actuator (30).

[0159] Hereinafter, the operation of a vehicle charging door device (100) according to an embodiment of the present invention assembled as described above will be explained with reference to FIGS. 1 to 15 and FIGS. 16 to 18. First, as in (S1) of FIG. 2, the charging door (20) completely closes the opening (11) of the inlet housing (10).

[0160] In the above-mentioned S1 state (charge door fully closed state), as shown in FIG. 16, the lead screw (40) is screw-coupled with the movable shaft (60) and is in a state where it penetrates the hollow (67) of the movable shaft (60) along the axial direction.

[0161] And, the above-mentioned movable shaft (60) is in a state of being moved backward along the guide housing (80) by the rotation of the lead screw (40) (in a state of being moved downward based on the drawing).

[0162] Here, at least one cam lobe (93) of the cam unit (90) is in cam contact with the first cam follower groove (95a) of the straight section (92a) in at least one cam profile (91). The at least one cam lobe (93) is located at one end (top, based on the drawing) of the first cam follower groove (95a).

[0163] In this state, as illustrated in FIG. 17, when a controller (not shown) applies a first drive control signal (e.g., a charging door opening operation signal) to a servo motor (33) of an actuator (30) (see FIG. 6 below), the servo motor (33) operates according to the first drive control signal.

[0164] Then, the output shaft (35) of the actuator (30) (see FIG. 6 below) rotates in one direction, and the lead screw (40) rotates in one direction (indicated by a solid arrow in the drawing).

[0165] Accordingly, the rotational force of the lead screw (40) is transmitted to the movable shaft (60). Here, since the at least one cam lobe (93) is in cam contact with one end of the first cam follower groove (95a) as shown in FIG. 16, the rotational force of the lead screw (40) is converted into a linear movement force of the movable shaft (60).

[0166] Accordingly, the movable shaft (60) moves linearly in one direction (upward direction based on the drawing) along a straight section (92a) through a guide housing (80) by means of at least one cam lobe (93) (indicated by a solid arrow in the drawing).

[0167] Thus, as the movable shaft (60) moves linearly in one direction for a certain length of the straight section (92a), the charging door (20) (see FIG. 2 below) moves linearly in one direction for a certain distance by the movable shaft (60), and as shown in FIG. 2, the opening (11) of the inlet housing (10) is partially opened (S2).

[0168] Here, the at least one cam lobe (93) is located at the other end (bottom, based on the drawing) of the first cam follower groove (95a). That is, the at least one cam lobe (93) is located at one end (top, based on the drawing) of the second cam follower groove (95b) of the helical section (92b).

[0169] After going through the process of S2 (partial opening of the charging door) as described above, the servo motor (33) continues to operate by the first drive control signal applied to the servo motor (33).

[0170] Then, as shown in FIG. 18, the output shaft (35) of the actuator (30) continues to rotate in one direction, and the lead screw (40) continues to rotate in one direction (indicated by a solid arrow in the drawing).

[0171] Accordingly, since the at least one cam lobe (93) is located at one end of the second cam follower groove (95b) of the helical section (92b) as shown in FIG. 17, the rotational force of the lead screw (40) is transmitted to the movable shaft (60).

[0172] Accordingly, the movable shaft (60) moves forward in one direction (upward direction based on the drawing) while rotating in one direction along the second cam follower groove (95b) of the helical section (92b) through the guide housing (80) by at least one cam lobe (93) (indicated by a solid arrow in the drawing). At this time, the at least one cam lobe (93) is located at the other end of the second cam follower groove (95b).

[0173] As described above, as the movable shaft (60) moves forward in one direction for a certain length of the helical section (92b) and rotates in one direction, the charging door (20) moves forward in one direction for a certain distance while rotating in one direction by the movable shaft (60).

[0174] Thus, the charging door (20) fully opens the opening (11) of the inlet housing (10) as shown in FIG. 2 (S3). For example, the charging door (20) can be rotated 90 degrees in one direction to fully open the opening (11) of the inlet housing (10).

[0175] Meanwhile, when the charging door (20) is in a state where the opening (11) of the inlet housing (10) is fully opened (S3 in FIG. 2), if a controller (not shown) applies a second drive control signal (e.g., a charging door closing operation signal) to the servo motor (33) of the actuator (30), the servo motor (33) is operated by the second drive control signal.

[0176] Then, as shown in FIG. 18, the output shaft (35) of the actuator (30) rotates in the other direction, and the lead screw (40) rotates in the other direction (indicated by a dashed arrow in the drawing).

[0177] Accordingly, since the at least one cam lobe (93) is located on the other end of the second cam follower groove (95b), the rotational force of the lead screw (40) is transmitted to the movable shaft (60).

[0178] Accordingly, the movable shaft (60) moves backward in the other direction (downward direction based on the drawing) while rotating in the other direction along the second cam follower groove (95b) of the helical section (92b) through the guide housing (80) by at least one cam lobe (93) (indicated by a dotted arrow in the drawing).

[0179] At this time, the at least one cam lobe (93) is located at one end (upper end based on the drawing) of the second cam follower groove (95b), as shown in FIG. 17. That is, the at least one cam lobe (93) is located at the other end (lower end based on the drawing) of the first cam follower groove (95a).

[0180] As described above, as the movable shaft (60) moves backward in the other direction while rotating by the length of the helical section (92b), the charging door (20) moves backward in the other direction for a certain distance while rotating by the movable shaft (60).

[0181] Thus, the charging door (20) partially closes the opening (11) of the inlet housing (10) as shown in FIG. 2 (S2). For example, the charging door (20) can be rotated 90 degrees in the other direction to partially close the opening (11) of the inlet housing (10).

[0182] After undergoing the process of S2 (partial closing of the charging door) as described above, if the servo motor (33) continues to operate by the second drive control signal applied to the servo motor (33), as shown in FIG. 17, the output shaft (35) of the actuator (30) continues to rotate in the other direction, and the lead screw (40) continues to rotate in the other direction (indicated by the dotted arrow in the drawing).

[0183] Accordingly, the rotational force of the lead screw (40) is transmitted to the movable shaft (60). Here, since the at least one cam lobe (93) is located at the other end of the first cam follower groove (95a), the rotational force of the lead screw (40) is converted into a linear movement force of the movable shaft (60).

[0184] Accordingly, the movable shaft (60) moves linearly in the other direction (downward direction based on the drawing) along the straight section (92a) through the guide housing (80) by means of at least one cam lobe (93) (indicated by a dotted arrow in the drawing). At this time, the at least one cam lobe (93) is located at one end (upward direction based on the drawing) of the first cam follower groove (95a), as shown in FIG. 16.

[0185] Thus, as the movable shaft (60) moves linearly in the other direction for a certain length of the straight section (92a) as described above, the charging door (20) moves linearly in the other direction for a certain distance by the movable shaft (60), and completely closes the opening (11) of the inlet housing (10) as shown in FIG. 2 (S1).

[0186] According to the vehicle charging door device (100) according to the embodiment of the present invention as described so far, the charging door (20) can be opened and closed in a linear movement manner and a rotary rotation manner using an electric operating mechanism of a simple configuration.

[0187] To elaborate, the vehicle charging door device (100) according to an embodiment of the present invention is structured such that the output shaft (35) of the actuator (30), the lead screw (40), the movable shaft (60), and the guide housing (80) are arranged coaxially.

[0188] Furthermore, the vehicle charging door device (100) according to an embodiment of the present invention is structured such that a movable shaft (60) and a guide housing (80) are disposed inside an inlet housing (10), and an actuator (30) is disposed on an actuator mounting surface (13) outside the inlet housing (10).

[0189] Accordingly, the vehicle charging door device (100) according to an embodiment of the present invention can reduce the size of the charging door package, increase assembly workability in the finished vehicle assembly inline, and increase the assembly workability of parts and the freedom of part design by securing additional layout space.

[0190] Furthermore, the vehicle charging door device (100) according to an embodiment of the present invention is structured such that an actuator (30) can be coupled and separated from an inlet housing (10), and a lead screw (40) is attached to and detached from the output shaft (35) of the actuator (30) while being supported by a screw support member (50).

[0191] Accordingly, the vehicle charging door device (100) according to an embodiment of the present invention can share an electric operating mechanism in response to different charging door package conditions depending on the specifications of the electric vehicle.

[0192] Thus, according to the vehicle charging door device (100) according to the embodiment of the present invention, flexible productivity can be secured according to multi-specification charging door package conditions, and manufacturing costs and investment costs associated with the new production of the charging door device can be reduced.

[0193] Meanwhile, the vehicle door charging device (100) according to the embodiment of the present invention as described above is provided with an actuator (30) configured to manually open and close the charging door (20) in an emergency situation, such as when the vehicle is completely discharged.

[0194] FIG. 19 is an exploded perspective view illustrating an actuator applied to a vehicle charging door device according to an embodiment of the present invention, and FIG. 20 is a combined cross-sectional view illustrating an actuator applied to a vehicle charging door device according to an embodiment of the present invention.

[0195] Referring to FIGS. 19 and 20, the actuator (30) according to an embodiment of the present invention includes, in addition to the actuator housing (31), servo motor (33), and output shaft (35) as described above, a power transmission gear group (32), an output gear (34), and a friction clutch ring (36).

[0196] The above power transmission gear group (32) is operatively connected to a servo motor (33). In one example, the power transmission gear group (32) may include a plurality of power transmission gears, such as helical gears and worm gears, which are well known to those skilled in the art.

[0197] The output gear (34) is connected to the power transmission gear group (32). An output shaft (35) is coupled to the output gear (34).

[0198] Here, a shaft hole (34a) is formed in the output gear (34), and a lead screw (40) is coupled to the output shaft (35).

[0199] In an embodiment of the present invention, the friction clutch ring (36) is configured to transmit the rotational force output from the servo motor (33) to the output shaft (35) and lead screw (40) through the power transmission gear group (32) and the output gear (34).

[0200] And, the friction clutch ring (36) is configured to slide the output shaft (35) together with the lead screw (40) in the shaft hole (34a) of the output gear (34) when an external force set on the lead screw (40) through the movable shaft (60) and guide housing (80) acts in the forward and reverse rotational direction.

[0201] The friction clutch ring (36) is pressed into the output shaft (35). The friction clutch ring (36) is pressed against the inner circumferential surface of the shaft hole (34a) of the output gear (34) with a frictional force set thereon. That is, the friction clutch ring (36) is positioned between the outer circumferential surface of the output shaft (35) and the inner circumferential surface of the shaft hole (34a).

[0202] As shown in FIG. 21, this friction clutch ring (36) includes a cylindrical ring body (38) and a plurality of friction protrusions (39) formed on the ring body (38).

[0203] The above ring body (38) is pressed into the outer surface of the output shaft (35) so as to be fixed to the outer surface of the output shaft (35).

[0204] The friction protrusions (39) are formed to protrude radially outward from the outer surface of the ring body (38) so that the ring body (38) is in close contact with the inner surface of the shaft hole (34a) of the output gear (34) with a frictional force set thereon.

[0205] Hereinafter, the operation of the actuator (30) according to the embodiment of the present invention configured as above is explained as follows: First, the rotational force output from the servo motor (33) is transmitted to the power transmission gear group (32) and the output gear (34).

[0206] The rotational force transmitted to the output gear (34) is transmitted to the output shaft (35) by the frictional force between the output gear (34) and the friction clutch ring (36). Accordingly, the lead screw (40) rotates in the forward and reverse directions together with the output shaft (35).

[0207] Accordingly, the charging door (20) rotates in the forward / reverse direction (or opening / closing direction) through the movable shaft (60) and guide housing (80), and can open or close the opening (11) of the inlet housing (10).

[0208] Meanwhile, in order to manually open or close the charging door (20) in an emergency situation such as a complete discharge of the vehicle, as shown in FIG. 22, manual rotational force is input along the opening and closing direction of the charging door (20) (see FIG. 1 and FIG. 2) which is opening or closing the opening (11) of the inlet housing (10).

[0209] The manual rotational force here can be defined as a force greater than the frictional force between the output gear (34) and the friction clutch ring (36).

[0210] Accordingly, the above manual rotational force is applied to the movable shaft (60) along the opening and closing direction of the charging door (20) and transmitted to the lead screw (40) through the guide housing (80).

[0211] Then, the friction clutch ring (36) slides along the inner circumference of the shaft hole (34a) of the output gear (34) together with the output shaft (35), and the lead screw (40) is rotated by the output shaft (35) in the opening and closing direction of the charging door (20).

[0212] As described above, as the lead screw (40) rotates in the opening / closing direction (or forward / reverse direction) of the charging door (20), the charging door (20) can be opened and closed in a linear movement manner and a rotary rotation manner through the movable shaft (60) and the guide housing (80).

[0213] Therefore, in the event of an emergency such as the complete discharge of the vehicle, the charging door (20) can be opened and closed manually.

[0214] Thus, by applying a friction clutch ring (36) to the actuator (30), it is possible to prevent the gear of the power transmission system from being damaged by manual rotational force when manually opening and closing the charging door (20).

[0215] Although preferred embodiments of the present invention have been described above, the present invention is not limited thereto and can be implemented with various modifications within the scope of the claims, the detailed description of the invention, and the attached drawings, and it is obvious that such modifications also fall within the scope of the present invention.

Claims

1. A vehicle charging door device configured to open and close an opening of an inlet housing coupled to a charging inlet assembly through a charging door, An actuator fixed to the inlet housing above; A lead screw detachably coupled to the output shaft of the actuator and rotatably supported in the inlet housing; A cylindrical movable shaft fixed to the edge of the charging door and screw-coupled with the lead screw; and A cylindrical guide housing that is connected to the movable shaft via a cam unit and fixed to the inlet housing so that the movable shaft rotates while moving forward and backward along the axial direction of the lead screw; A vehicle charging door device including 2. In Paragraph 1, A screw support member fixed to the inlet housing to support the lead screw coupled to the output shaft and coupled to the guide housing; A vehicle charging door device further comprising 3. In Paragraph 2, The above actuator is, A vehicle charging door device coupled to a plurality of fastening protrusions protruding from the actuator mounting surface of the inlet housing.

4. In Paragraph 3, The above screw support member is, A vehicle charging door device disposed between the actuator mounting surface of the inlet housing and the actuator.

5. In Paragraph 2, The lead screw above is, A screw part that is screw-coupled to the inner circumference of the above-mentioned movable shaft, and A flange portion formed at one end of the screw portion, and A coupling projection extending from the above flange portion and directly connected to the output shaft A vehicle charging door device including 6. In Paragraph 5, The above screw support member is, A cup-shaped flange support portion having a screw coupling hole into which the other end of the screw portion is inserted to support the flange portion, and A plurality of support rib portions extending from the edge of the flange support portion and fastened to the guide housing and the inlet housing A vehicle charging door device including 7. In Paragraph 2, The above guide housing is, A housing body portion coupled to a cylindrical boss portion formed in the inlet housing, and A plurality of support rib portions extending from the edge of one end of the housing body portion and fastened to the screw support member and the inlet housing. A vehicle charging door device including 8. In Paragraph 7, The above-mentioned movable shaft is fitted into the hollow of the housing body through the other end of the housing body, and One end of the above-mentioned movable shaft is fastened to the edge of the charging door through a plurality of support ribs, and A vehicle charging door device having a slip member coupled to the other end of the above-mentioned movable shaft.

9. In Paragraph 8, The above slip member is, A slip ring portion that makes slip contact with the inner circumference of the above-mentioned housing body, and A plurality of hook coupling parts protruding from the slip ring portion and hook-coupled to the other end of the movable shaft A vehicle charging door device including 10. In Paragraph 9, At the other end of the above-mentioned movable shaft, hook coupling grooves and hook protrusions that engage with the above-mentioned hook coupling parts are formed, and A vehicle charging door device in which a hook coupling hole capable of hook coupling with the hook projection is formed in the above hook coupling portions.

11. In Paragraph 1, The above cam unit is, At least one cam profile formed along the axial direction on the outer surface of the above-mentioned movable shaft and comprising interconnected straight sections and helical sections, and At least one cam lobe fixed to the guide housing to make cam contact with the at least one cam profile on the inner circumferential side of the guide housing A vehicle charging door device including 12. In Paragraph 11, The above at least one cam profile is, A first cam follower groove formed in the above straight section, and A second cam follower groove connected to the first cam follower groove and formed in the helical section A vehicle charging door device including 13. In Paragraph 11, The above at least one cam lobe is, A lobe base part coupled to the above guide housing, and Cam projection protruding from the above lobe base A vehicle charging door device including 14. In Paragraph 13, The above guide housing is, A projection coupling hole coupled to the above-mentioned cam projection, and A base coupling groove formed at the edge portion of the above-mentioned projection coupling hole and coupled to the above-mentioned lobe base portion. A vehicle charging door device including 15. In Paragraph 1, A vehicle charging door device in which the output shaft of the actuator, the lead screw, the guide housing, and the movable shaft are arranged coaxially.

16. In Paragraph 11, When the output shaft of the above actuator rotates in one direction, the lead screw rotates in one direction, and The movable shaft moves forward along the straight section by means of the at least one cam lobe that makes cam contact with the straight section of the at least one cam profile, and The movable shaft rotates while advancing along the helical section by means of the at least one cam lobe that cam contacts the helical section of the at least one cam profile, and A vehicle charging door device in which the charging door opens the opening of the inlet housing.

17. In Paragraph 16, When the output shaft of the above actuator rotates in the other direction, the lead screw rotates in the other direction, and The movable shaft rotates while moving backward along the helical section by means of the at least one cam lobe that cam contacts the helical section of the at least one cam profile, and The movable shaft moves backward along the straight section by means of the at least one cam lobe that makes cam contact with the straight section of the at least one cam profile, and A vehicle charging door device in which the charging door closes the opening of the inlet housing.

18. In Paragraph 1, The above actuator is, An actuator housing coupled to the inlet housing above, and A servo motor installed in the above actuator housing, and A power transmission gear group connected to the above servo motor, and The output shaft is coupled to the output gear connected to the power transmission gear group, and A friction clutch ring that is press-fitted into the output shaft and adheres to the inner circumference of a shaft hole formed in the output gear with a set frictional force. A vehicle charging door device including 19. In Paragraph 18, The above friction clutch ring is, A plurality of friction protrusions formed to protrude radially outward to closely contact the inner circumferential surface of the shaft hole A vehicle charging door device including 20. In Paragraph 18, When a manual rotational force greater than the frictional force of the friction clutch ring is applied to the movable shaft along the opening and closing direction of the charging door, Manual rotational force is transmitted to the lead screw through the guide housing, and The friction clutch ring slides and rotates together with the output shaft, A vehicle charging door device in which the lead screw is rotated in the opening and closing direction of the charging door by the output shaft.

Images