Door opener assembly for push-type fuel doors

Abstract

A fuel door opener assembly for a push-type fuel door includes an ejection member mounted inside a housing and a locking member mounted inside the housing. The ejection member includes a plunger mounted so as to be able to slide inside the housing while being elastically supported; a latch connected to the fuel door, mounted so as to pass through the housing, be coaxially arranged with the plunger, contact an end of the plunger, and be configured to eject the fuel door; a cam selectively restrained by the locking member and configured to restrain the sliding movement of the latch when restrained by the locking member; and a plunger spring configured to elastically support the plunger toward the latch inside the housing.

Description

Technical Field

[0001] Exemplary embodiments of the present disclosure relate to a fuel door opener assembly for a push-type fuel door. Background Art

[0002] The fuel door of the vehicle is closed so as to be able to block the fuel filling port to which the fuel filler cap is mounted, and when refueling, the fuel door is opened so as to be able to open the fuel filler cap.

[0003] Methods for opening the fuel door include a method of opening the fuel door by operating a fuel door opening switch installed around the driver's seat, and a method of opening the fuel door by pushing the fuel door without operating a separate switch. Recently, with the popularity of self-service gas stations where drivers can refuel directly, the use of push-type fuel doors is expanding, in which the fuel door lock is also unlocked when the driver releases the door lock.

[0004] The push-type fuel door has a structure in which a lock catch is always hooked by a hook provided in the inner panel of the fuel door to be locked. This structure is operated so that when the vehicle lock is unlocked from the driver's seat, the lock catch is released, and when the fuel door is pushed open, the push opener pushes the fuel door outward to open the fuel door.

[0005] However, with the fuel door opener according to the related art, the opener and the locker are separately configured, so that the number of components increases and the weight and assembly labor increase. Summary of the Invention

[0006] The present disclosure relates to a fuel door opener assembly for a push-type fuel door. Specific embodiments relate to a fuel door opener assembly capable of opening or closing the door through a push operation.

[0007] Embodiments of the present disclosure relate to a fuel door opener assembly for a push-type fuel door, which has a simplified structure by integrating components and is capable of unlocking and ejecting the fuel door.

[0008] Other purposes and advantages of the present disclosure can be understood by the following description and can be more apparent with reference to the embodiments of the present disclosure. Moreover, it is obvious to those skilled in the art that the purposes and advantages of the present disclosure can be achieved by the claimed technical means and combinations thereof.

[0009] According to an embodiment of the present disclosure, a fuel door opener assembly for a push-type fuel door is provided, the fuel door opener assembly including a pop-up component mounted within a housing and configured to pop out the fuel door when the fuel door for opening or closing a fuel filler port of a vehicle is pressed from the outside; and a locking component mounted within the housing and configured to release the restriction of the pop-up component to enable the fuel door to be popped out, or to restrict the pop-up component to prevent the fuel door from being popped out. In the fuel door opener assembly for pushing and popping the fuel door upward, the pop-up component may include a plunger mounted to slide within the housing while being elastically supported; a latch connected to the fuel door, mounted to pass through the housing, coaxially arranged with the plunger, contacting an end of the plunger, and configured to pop out the fuel door; a cam selectively restricted by the locking component and configured to restrict sliding of the latch when restricted by the locking component; and a plunger spring configured to elastically support the plunger toward the latch within the housing.

[0010] The portion where the latch contacts the plunger may include an inclined portion formed to protrude conically toward one of the latch and the plunger, and a recessed portion formed in the other of the latch and the plunger and configured to receive the inclined portion.

[0011] An angle between a central axis of the latch and the inclined surface of the inclined portion may be formed to be smaller than an angle between the central axis of the latch and the inclined surface of the concave portion of the plunger.

[0012] A cam receiving groove may be formed on an outer side of the door latch so as to receive a portion of the cam in a length direction of the door latch.

[0013] The cam may be configured to alternately form a horizontal surface (in which a portion of the circumference of the cam is cut away) and a control groove (which is formed to be recessed in a V-shape toward the center of the cam and limits the end of the latch according to the rotation angle of the cam).

[0014] In a state in which the rotation of the cam is restricted, the door latch may be restricted when the end of the door latch is caught in the control groove.

[0015] The fuel door opener assembly may further include a ball slidably mounted in the housing and configured to contact an outer surface of the cam; and a ball spring configured to elastically support the ball toward the cam.

[0016] The direction in which the ball slides may be eccentric relative to the axis of rotation of the cam, ie not in the centre.

[0017] The locking component may include a driving motor; a cam limiting gear configured to limit or release the cam according to the rotation of the driving motor, and a power transmitting member configured to transmit the driving force of the driving motor to the cam limiting gear so that the cam limiting gear limits or releases the cam.

[0018] The cam limiting gear may include a cam limiting portion formed in a rack shape and inserted into a control groove formed to be recessed toward a center of the cam.

[0019] A guide protrusion configured to guide the cam limiting gear to slide may be formed in the housing, and a guide groove configured to receive the guide protrusion may be formed in the cam limiting gear.

[0020] The fuel door opener assembly may further include a control unit configured to interlock with a door lock of the vehicle and control the locking member so that the pop-up member is in a locked or unlocked state. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a plan view illustrating a fuel door opener assembly for a push-type fuel door according to an embodiment of the present disclosure.

[0022] Figure 2 is an exploded perspective view illustrating a fuel door opener assembly for a push-type fuel door according to an embodiment of the present disclosure.

[0023] Figure 3 is a plan view illustrating a pop-up component in a fuel door opener assembly for a push-type fuel door according to an embodiment of the present disclosure.

[0024] Figure 4 is a cross-sectional view illustrating a pop-up component in a fuel door opener assembly for a push-type fuel door according to an embodiment of the present disclosure.

[0025] Figures 5A to 5F are cross-sectional views sequentially illustrating operating states of a pop-up member in a fuel door opener assembly for a push-type fuel door according to an embodiment of the present disclosure.

[0026] Figure 6 is a schematic diagram illustrating a locked state of a fuel door opener assembly for a push-type fuel door according to an embodiment of the present disclosure.

[0027] Figure 7 is a schematic diagram illustrating an unlocked state of a fuel door opener assembly for a push-type fuel door according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0028] Hereinafter, a fuel door opener assembly for a push type fuel door according to an embodiment of the present disclosure will be described in detail with reference to the accompanying drawings.

[0029] The fuel door opener assembly for a push-type fuel door according to an embodiment of the present disclosure is used to push and eject a fuel door D installed in a vehicle body to open or close the vehicle's fuel filler port. The fuel door opener assembly for a push-type fuel door includes an ejection member mounted in a housing 11 and configured to eject the fuel door D when pressed from the outside; and a locking member mounted within the housing 11 and configured to release the ejection member from the fuel door D and to prevent the ejection member from ejecting the fuel door D.

[0030] The housing 11 is installed in the fuel filler opening of the vehicle or in a portion adjacent to the fuel filler opening.

[0031] The housing 11 has a space formed therein to accommodate components to be described below in the space. In addition, a through hole is formed in the housing 11 so that components can be operated by passing through the housing 11, for example, the bolt 21 can be extracted and inserted therein from the through hole.

[0032] In a state where the fuel door opener assembly is unlocked by a body control module (BCM), when the fuel door D installed in the vehicle body is pushed, the pop-up member pops out the fuel door D by a reaction force.

[0033] The following describes the structure of the pop-up component described above, which includes: a plunger 22, which is slidably installed inside the housing 11; a latch 21 connected to the fuel door D, which is installed to pass through the housing 11, is coaxially arranged with the plunger 22, contacts the end of the plunger 22, and is configured to pop out the fuel door D; and a cam 24, which is selectively restricted by the locking component and is configured to restrict the sliding of the latch 21 when restricted by the locking component.

[0034] The latch 21 is installed to pass through the housing 11. The latch 21 is inserted into a through hole formed in the housing 11 and slides in a slide groove 11a formed inside the housing 11.

[0035] One end of the latch 21, i.e., the end located outside the housing 11, is connected to the fuel door D and interlocked with the fuel door D, so that when the latch 21 moves in a direction away from the housing 11, the fuel door D pops out. Alternatively, when the fuel door D is pushed, the operating force is transmitted to the pop-up member through the latch 21.

[0036] A cam receiving groove 21a is formed on the outer surface of the latch 21 to receive a portion of the cam 24. The cam receiving groove 21a is formed on the outer surface of the latch 21 and has a predetermined depth in the longitudinal direction of the latch 21. The cam receiving groove 21a receives a portion of the cam 24. Furthermore, when the cam 24 is caught at the end of the cam receiving groove 21a, the sliding movement of the latch 21 is restricted.

[0037] The plunger 22 is coaxially mounted with the latch 21 inside the housing 11. The plunger 22 is also slidably mounted in the axial direction of the plunger 22. In addition, the plunger 22 is not mechanically connected to the latch 21, but is mounted in a state where the end portion contacts the end portion of the plunger 22.

[0038] An inclined portion 21 b and a recessed portion 22 a are formed in a portion where the latch 21 contacts the plunger 22 so that the center axis of the plunger 22 coincides with the center axis of the latch 21 .

[0039] For example, the inner side end of the latch 21 is formed as an inclined portion 21 b to conically protrude toward the plunger 22 , and a recessed portion 22 a is formed in the plunger 22 to accommodate the inclined portion 21 b of the latch 21 .

[0040] In particular, the inclination angle of the inclined portion 21b of the latch 21 is greater than the inclination angle of the recessed portion 22a of the plunger 22. This is to allow the center of the latch 21 to coincide with the center of the plunger 22. That is, the center of the inclined portion 21b is positioned as the center of the recessed portion 22a so that the centers of the latch 21 and the plunger 22 always coincide with each other.

[0041] refer to Figure 4 , an angle α between the central axis of the latch 21 and the inclined surface of the inclined portion 21b is formed to be greater than an angle β between the central axis of the latch 21 and the inclined surface of the recessed portion 22a of the plunger 22, so that the central axes of the latch 21 and the plunger 22 always coincide with each other.

[0042] Alternatively, the concave portion may be formed in the latch 21 , and the inclined portion 21 b may be formed in the plunger 22 .

[0043] The plunger 22 is installed to be elastically supported toward the latch 21 due to the plunger spring 23 installed inside the housing 11. The plunger spring 23 elastically supports the plunger 22 toward the latch 21 so that the latch 21 and the plunger 22 are always in contact.

[0044] The cam 24 is rotatably installed inside the housing 11 .

[0045] The cam 24 includes a horizontal surface 24a (formed so as not to interfere with the sliding movement of the latch 21 along the periphery of the cam 24) and a control groove 24b (formed so as to be recessed toward the center of the cam 24). The horizontal surfaces 24a and the control grooves 24b are alternately formed along the periphery of the cam 24. For example, two horizontal surfaces 24a and two control grooves 24b are formed.

[0046] The horizontal surface 24a is formed in a shape in which a portion of a circular disk is cut away. When the horizontal surface 24a and the latch 21 are substantially parallel to each other, the cam 24 and the latch 21 do not interfere with each other, so that the latch 21 can slide without restriction.

[0047] The control groove 24b is formed to be recessed in a V shape toward the center of the cam 24. The control grooves 24b are formed symmetrically to each other at intervals of 180 degrees based on the rotation axis of the cam 24, and a horizontal surface 24a is formed between the control grooves 24b.

[0048] The control groove 24b restricts the peripheral edge of the end of the latch 21 and the peripheral edge of the end of the plunger 22 according to the rotation angle of the cam 24, or the cam restricting portion 34a of the cam restricting gear 34 is inserted into the control groove 24b to restrict the rotation of the cam 24. When the cam restricting portion 34a is inserted into the control groove 24b and restricted, the latch 21 cannot slide when the opposite control groove 24b restricts the end of the latch 21. Alternatively, when the cam restricting portion 34a is released from the control groove 24b, the latch 21 can slide.

[0049] The ball 25 is slidably mounted inside the housing 11 .

[0050] Furthermore, the ball 25 is elastically supported so as to contact the outer surface of the cam 24 within the housing 11. Since the ball 25 is in contact with the outer surface of the cam 24 while being elastically supported, the posture of the cam 24 is controlled. Specifically, since the direction in which the ball 25 slides is eccentric with respect to the rotation axis of the cam 24, the ball 25 elastically supports the cam 24, causing the cam 24 to rotate in one direction (counterclockwise in the figure).

[0051] The locking member places the ejection member in a locked or unlocked state.

[0052] The locking part includes a drive motor 31 , a power transmission member for transmitting the driving force of the drive motor 31 , and a cam restriction gear 34 configured to slide due to the driving force transmitted through the power transmission member to restrict the cam 24 .

[0053] When the driving motor 31 receives an operation signal from a controller 41 (eg, BCM) installed in the vehicle, the driving motor 31 may rotate according to the signal input from the controller 41 to restrain the ejection member or release the restraint thereof.

[0054] The cam restricting gear 34 is slidably mounted inside the housing 11 .

[0055] When sliding within the housing 11, the cam limiting gear 34 engages with the cam 24 to restrict it, or disengages from it to release it from its restriction. To this end, the cam limiting gear 34 is formed in a rack shape. Furthermore, a cam limiting portion 34a is formed to extend from one side of the cam limiting gear 34 toward the cam 24, inserting into the control slot 24b of the cam 24. Because the cam limiting gear 34 is formed in a rack shape, the rotational force of the drive motor 31 is converted into linear motion, allowing the cam limiting gear 34 to slide. Furthermore, when the cam limiting portion 34a is inserted into the control slot 24b of the cam 24, depending on the position of the cam limiting gear 34, the cam limiting portion 34a restricts the rotation of the cam 24 to restrict the ejection member, thereby preventing the fuel door D from being blocked. Alternatively, the cam 24 can rotate to release the restriction on the ejection member, allowing the fuel door D to open.

[0056] When the cam limiting gear 34 slides in the housing 11, a guide structure is formed in the cam limiting gear 34 and the housing 11 to guide the sliding of the cam limiting gear 34. For example, a guide protrusion 11b is formed in the housing 11, and a guide groove 34b is formed in the cam limiting gear 34, thereby guiding the sliding of the cam limiting gear 34.

[0057] The power transmission member transmits the driving force of the driving motor 31 to the cam limiting gear 34. Since the rotating shaft of the driving motor 31 performs rotational motion, but the cam limiting gear 34 performs linear motion, the power transmission member converts the rotational motion into linear motion and transmits the linear motion.

[0058] For example, the power transmission member may include a worm gear 32 mounted on the rotating shaft of the drive motor 31, and a worm wheel 33 configured to drive the cam limiting gear 34 while being driven by engaging with the worm gear 32. The portion of the worm gear 33 that engages with the worm gear 32 and the cam limiting gear 34 may be formed in multiple stages. In the worm gear 33, the portion that engages with the worm gear 32 may be formed in a helical gear shape to facilitate engagement with the worm gear 32, and the portion that engages with the cam limiting gear 34 may be formed in a spur gear shape.

[0059] Hereinafter, the operation of the fuel door opener assembly for the push type fuel door having the above-described configuration according to the embodiment of the present disclosure will be described.

[0060] refer to Figure 6 and Figure 7 , the locked state of the fuel door opener assembly will be described first ( Figure 6 ) and unlocked state ( Figure 7 ).

[0061] When the vehicle's door locks 43 are locked, the BCM 41 drives the drive motor 31, causing the locking member to restrain the pop-up member, locking the fuel door opener assembly. The BCM 41 locks all vehicle doors when the driver operates the door lock switch to the locked state, locking all vehicle doors, locking all vehicle doors with a key after a passenger leaves, or when the vehicle exceeds a predetermined speed. When the vehicle's door locks 43 are locked, the fuel door opener assembly is also locked, interlocked with the door locks 43.

[0062] When the BCM 41 applies a driving signal for locking the fuel door opener assembly to the driving motor 31, the driving motor 31 rotates in one direction to move the cam limit gear 34 toward the cam 24 through the power transmission member. Figure 6 In the embodiment, when the drive motor 31 is driven and the worm gear 32 is moved in the direction of arrow (1), the worm gear 33 rotates in the direction of arrow (2), and the cam limiting gear 34 is moved in the direction of arrow (3). When the cam limiting gear 34 moves toward the cam 24 and the cam limiting portion 34a is inserted into the control groove 24b of the cam 24, the rotation of the cam 24 is restricted.

[0063] When the rotation of the cam 24 is restricted, the pop-up member is restricted, and thus the fuel door opener assembly is locked.

[0064] When the vehicle's door lock 43 is unlocked, the BCM 41 drives the drive motor 31, causing the locking member to release the restriction of the pop-up member, unlocking the fuel door opener assembly. When the door lock 43 is unlocked, for example, when the driver operates the door lock 43 to the unlocked state or unlocks the vehicle with a key, the fuel door opener assembly is also unlocked by interlocking with the unlocking of the door lock 43. However, even when the fuel door opener assembly is unlocked, the fuel door D does not open immediately but remains in an openable state. When the fuel door D is in the openable state, the fuel door D pops up and opens due to the operation of the pop-up member (described below).

[0065] When the BCM 41 applies a drive signal for unlocking the fuel door opener assembly to the drive motor 31, the drive motor 31 Figure 6 The cam limiting gear 34 is rotated in the opposite direction to the direction of the cam 24 to move the cam limiting gear 34 so as to be released from the cam 24 through the power transmission member. Figure 7 When the drive motor 31 is driven, the worm gear 32, the worm gear 33 and the cam limiting gear 34 operate in the directions of arrows (1) to (3), the cam limiting gear 34 is released from the cam 24, and the cam limiting portion 34a is released from the control groove 24b of the cam 24, so that the cam 24 is in a rotatable state.

[0066] When the cam 24 is rotatable, the ejection member can be ejected.

[0067] Figures 5A to 5F The operating state of the eject member is shown in a state where the locking member releases the restriction of the cam 24 .

[0068] Even when the locking member releases the restriction of the cam 24, the plunger 22 is engaged with the cam 24 so that the plunger 22 does not push the latch 21. Figure 5A In the state, the plunger 22 can move to the left side of the figure (see arrow) due to the plunger spring 23, but the cam 24 can also rotate in the counterclockwise direction (see arrow) due to the ball spring 26. Since the plunger 22 is engaged with the cam 24, the plunger 22 and the cam 24 are maintained at Figure 5A In addition, since the cam 24 restricts the latch 21, the fuel door D does not pop out. In this state, the latch 21 protrudes by a predetermined displacement a.

[0069] Figure 5D The fuel door D is shown in a state where it is pushed. When the fuel door D is pushed open, the latch 21 is inserted into the housing 11. When the latch 21 is inserted into the housing 11, the latch 21 pushes the plunger 22 into the housing 11, so that the plunger spring 23 is compressed to the maximum extent. In this case, even when the latch 21 moves, the cam 24 is maintained in the position as shown in the figure due to the cam receiving groove 21a. Figure 5A Since the latch 21 is inserted when the fuel door D is pushed, the latch 21 has Figure 5B The displacement b is shown.

[0070] When the fuel door D is further pushed, the restriction between the latch 21 and the cam 24 is released, so that the cam 24 rotates in the counterclockwise direction due to the elastic force of the ball spring 26 (see FIG. Figure 5C ).

[0071] Then, when the push of the fuel door D is released, the plunger spring 23 pushes the plunger 22 and the latch 21 (see FIG. Figure 5D When the latch 21 slides to the outside of the housing 11, the end of the cam receiving groove 21a of the latch 21 causes the cam 24 to rotate in the counterclockwise direction.

[0072] Figure 5E The state in which the plunger spring 23 pushes the plunger 22 and the latch 21 to the maximum extent is shown. Due to the maximum release of the latch 21 from the housing 11, the latch 21 pops out of the fuel door D. In this case, the cam 24 continues to rotate in the counterclockwise direction with the movement of the latch 21.

[0073] When the fuel door D pops up, the user opens the fuel door D to refuel.

[0074] When refueling is completed, the user closes the fuel door D. When the fuel door D is closed, the fuel door D is again in the pushed state (see Figure 5F ). When the fuel door D is pushed and thus the latch 21 is inserted, the cam 24 rotates in the clockwise direction.

[0075] Thereafter, when the push for blocking the fuel door D is released, the latch 21 is restored to its original position together with the plunger 22 due to the plunger spring 23. Figure 5A When the latch 21 is Figure 5F The status is restored to Figure 5A When the cam 24 is in the state of being stopped by the end of the cam receiving groove 21a, it rotates in the counterclockwise direction, and the end of the latch 21 and the front periphery of the plunger 22 are restricted to the control groove 24b, so that the cam 24 is in the state of being stopped again. Figure 5A status.

[0076] In recovery to Figure 5A In the state, when the door lock 43 is locked by the driver of the vehicle, the BCM 41 operates the drive motor 31 to insert the cam restriction portion 34a into the control groove 24b, so that the fuel door D is in the locked state.

[0077] According to the fuel door opener assembly for a push-type fuel door having the above-described configuration according to an embodiment of the present disclosure, the structure of the fuel door opener assembly for locking or unlocking the fuel door and ejecting the fuel door may be simplified.

[0078] Furthermore, since locking or unlocking is performed by interlocking with the door lock of the vehicle, the fuel door can be opened without a separate operation.

[0079] Although the present disclosure has been described with respect to specific embodiments, it will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the present disclosure as defined in the following claims. Therefore, it should be noted that such replacements or modifications fall within the claims of the present disclosure, and the scope of the present disclosure should be interpreted based on the appended claims.

Claims

1. A fuel door opener assembly for a push-type fuel door, the fuel door opener assembly comprising: an ejection member installed inside the housing and configured to eject the fuel door when the fuel door is pressed from the outside, the ejection member comprising: a plunger installed in a resiliently supported state and capable of sliding inside the housing; a latch connected to the fuel door, which is installed to pass through the housing, is coaxially arranged with the plunger, contacts the end of the plunger, and is configured to pop out the fuel door; a cam configured to limit sliding movement of the latch; and a plunger spring configured to elastically support the plunger toward the latch inside the housing, as well as a locking member installed inside the housing and configured to release the restriction of the ejection member so that the fuel door can be ejected, or to restrict the ejection member so that the ejection member does not eject the fuel door, the cam being selectively restricted by the locking member and configured to restrict sliding movement of the latch when restricted by the locking member; wherein the portion of the latch that contacts the plunger includes an inclined portion and a recessed portion, the inclined portion being formed to protrude conically on one of the latch and the plunger, and the recessed portion being formed in the other of the latch and the plunger and configured to accommodate the inclined portion.

2. The fuel door opener assembly according to claim 1, wherein: An angle between a central axis of the latch and an inclined surface of the inclined portion is formed to be smaller than an angle between the central axis of the latch and an inclined surface of the concave portion of the plunger.

3. The fuel door opener assembly according to claim 1, wherein: A cam receiving groove is formed on an outer side of the door latch and is configured to receive a portion of the cam in a length direction of the door latch.

4. The fuel door opener assembly according to claim 1, wherein: The cam comprises: a horizontal surface on which a portion of a periphery of the cam is cut away; and A control groove is formed to be recessed in a V-shape toward the center of the cam and is configured to restrict an end of the latch according to a rotation angle of the cam, and the horizontal surfaces and the control groove are alternately formed.

5. The fuel door opener assembly according to claim 4, wherein: In a state where the rotation of the cam is restricted, when the end portion of the latch is caught by the control groove, the latch is restricted.

6. The fuel door opener assembly of claim 4, further comprising: a ball slidably mounted in the housing and in contact with an outer surface of the cam; as well as A ball spring is configured to elastically support the ball toward the cam.

7. The fuel door opener assembly according to claim 6, wherein: The sliding direction of the ball is eccentric with respect to the rotation axis of the cam.

8. The fuel door opener assembly of claim 1, wherein: The locking component comprises: Drive motor; a cam restricting gear configured to restrict or release the cam according to rotation of the driving motor; and A power transmission member is configured to transmit a driving force of the driving motor to the cam restriction gear so that the cam restriction gear restricts or releases the cam.

9. The fuel door opener assembly of claim 8, wherein: The cam limiting gear includes a cam limiting portion formed in a rack shape and inserted into a control groove recessed toward a center of the cam.

10. The fuel door opener assembly of claim 8, further comprising: a guide protrusion formed in the housing and configured to guide sliding movement of the cam limiting gear; as well as A guide groove is formed in the cam restricting gear and is configured to receive the guide protrusion.

11. The fuel door opener assembly of claim 1 , further comprising: A control unit is configured to interlock with a door lock of a vehicle and control the locking member to place the pop-up member in a locked state or an unlocked state.

12. A method of operating a fuel door opener assembly according to any one of claims 1 to 11, the method comprising the steps of: engaging a plunger with a cam that restrains the latch; Push the fuel door; inserting the latch into the housing; pushing the plunger into the housing so that the plunger spring is maximally compressed; releasing the restriction between the latch and the cam, wherein the cam rotates in a counterclockwise direction due to the elastic force of the ball spring; releasing the push on the fuel door; pushing the plunger and the latch with the plunger spring; sliding the latch to the exterior of the housing, wherein an end of the cam receiving slot of the latch causes the cam to rotate in the counterclockwise direction; pushing the plunger and the latch to their maximum extent using the plunger spring; releasing the latch from the housing; and Pop open the fuel door.

13. A door opener assembly comprising: a housing having a through hole and a sliding groove; a door latch configured to be inserted into the through hole and slidable in the sliding groove of the housing, an end of the door latch being located outside the housing and connected to the door; a plunger slidably mounted within the housing and coaxial with the latch; a plunger spring installed inside the housing and elastically supporting the plunger to keep the latch and the plunger in contact; a cam rotatably mounted within the housing, the cam including two control slots evenly spaced around a periphery of the cam and separated by a horizontal surface of the cam; as well as a locking member mounted inside the housing, wherein the portion of the latch that contacts the plunger includes an inclined portion and a recessed portion, the inclined portion being formed to protrude conically on one of the latch and the plunger, and the recessed portion being formed in the other of the latch and the plunger and configured to accommodate the inclined portion. 14 . The door opener assembly of claim 13 , further comprising a cam receiving groove formed on an outer surface of the door latch and configured to receive a portion of the cam.

15. The door opener assembly of claim 13, wherein: Each of the control grooves is recessed in a V shape toward the center of the cam.

16. The door opener assembly of claim 13, further comprising: a ball slidably mounted in the housing and in contact with an outer surface of the cam; as well as A ball spring is configured to elastically support the ball toward the cam.

17. The door opener assembly of claim 13, wherein: The locking component comprises: Drive motor; a cam restricting gear configured to restrict or release the cam according to rotation of the driving motor; and A power transmission member is configured to transmit a driving force of the drive motor to the cam restriction gear.

18. The door opener assembly of claim 17, wherein: The cam restricting gear includes a cam restricting portion formed in a rack shape.

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