JP2019090203A - Fuel lid actuator - Google Patents

Abstract

To realize a fuel lid actuator which does not generate self-excited vibration noise and has a simple structure with a small number of components.SOLUTION: An actuator 1A includes: a case 2; permanent magnets 21 and 22 accommodated in the case 2 and movable relative to the case 2; an electromagnet 30 accommodated in the case 2 and immovable relative to the case 2; and a rod 3 movable relative to the case 2 and reciprocally driven between a lock position for locking a fuel lid and an unlock position for unlocking the fuel lid. Energizing the electromagnet 30 to move the permanent magnets 21 and 22 in a first direction causes the rod 3 to be driven from the unlock position to the lock position, while reversing the direction of energizing the electromagnet 30 to move the permanent magnets 21 and 22 in a second direction opposite to the first direction causes the rod 3 to be driven from the lock position to the unlock position.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an actuator used for a fuel lid that is a lid of a fuel filler of a vehicle.

  Patent Document 1 describes a fuel lid actuator including a brush motor, a worm shaft, a sector gear, a return spring, an output rod, and the like. In this fuel lid actuator, the worm shaft is coupled to the armature shaft of the motor, the sector gear is engaged with the foam shaft, and the output rod is engaged with the sector gear. Furthermore, the output rod is supported so as to be linearly movable in the axial direction, and under normal conditions where the brush motor is not energized, the output rod is held in the locked position by the biasing of the return spring. On the other hand, when the brush motor is energized, the sector gear rotates and the output rod moves to the unlock position against the urging of the return spring. Thereafter, when the brush motor is de-energized, the output rod returns to the locked position by the urging of the return spring.

  The output rod in the lock position engages with the hole provided in the fuel lid to lock the fuel lid. On the other hand, when the output rod moves from the lock position to the unlock position, the engagement between the output rod and the hole provided in the fuel lid is released, and the fuel lid shifts from the locked state to the unlocked state.

  As described above, the fuel lid actuator described in Patent Document 1 includes the two drive sources of the motor (brush motor) and the elastic body (return spring), and moves the output rod from the lock position to the unlock position. A motor is used to cause the movement, and an elastic body is used to move the output rod from the unlock position to the lock position.

JP 2001-65215 A

  In a fuel lid actuator that uses a motor as a drive source, noise (hereinafter referred to as “self-excited vibration noise”) is generated due to self-excited vibration of the motor. In recent years, in many vehicles, the door can be switched from the locked state to the unlocked state or from the unlocked state to the locked state by remote control from the outside of the vehicle. In such a vehicle, when the door of the vehicle is changed from the unlocked state to the locked state by remote control, the fuel lid may be also changed from the unlocked state to the locked state at the same time. When a fuel lid actuator having a motor as a drive source is mounted on such a vehicle, the door and the fuel lid are switched from the unlocked state to the locked state, and then the self-excited vibration of the motor serving as the drive source of the fuel lid actuator. Noise is generated. Therefore, the operator hears self-excited vibration noise after the operation noise when the door and the fuel lid are switched from the unlocked state to the locked state, and feels uncomfortable, or the door and the fuel lid are locked from the unlocked state. Misunderstand that it did not switch to the state normally.

  Further, the fuel lid actuator using the motor as a drive source requires a conversion mechanism (gear) for converting the rotational movement of the armature shaft into a linear movement, so the number of parts is large and the structure is complicated, and the motor and elastic The fuel lid actuator having two drive sources for the body further increases the number of parts and the structure is more complicated.

  In addition, in an actuator for a fuel lid provided with two drive sources of a motor and an elastic body, although the operation using the motor as a drive source can be remotely controlled or interlocked with the operation of another mechanism, the elastic body can It is not possible to remotely control the operation with the drive source, or interlock with the operation of other mechanisms.

  An object of the present invention is to provide a fuel lid actuator that does not generate self-oscillation noise and has a simple structure with a small number of parts.

  The actuator for a fuel lid according to the present invention includes a case, a permanent magnet which is accommodated in the case, which is movable with respect to the case, an electromagnet which is accommodated in the case and which is immovable with respect to the case, and which is opposed to the case. The rod has a locking position for locking the fuel lid, and a rod that is reciprocally driven to an unlocking position for unlocking the fuel lid. When the electromagnet is energized to move the permanent magnet in the first direction, the rod is driven from the unlock position to the lock position to reverse the energization direction to the electromagnet to move the permanent magnet in the first direction. And moving the rod from the locked position to the unlocked position.

  In one aspect of the present invention, a fuel lid actuator includes two permanent magnets and one electromagnet disposed between the two permanent magnets, wherein the two permanent magnets and the one electromagnet Are arranged coaxially.

  In another aspect of the present invention, an actuator for a fuel lid includes two of the electromagnets and one of the permanent magnets disposed between the two electromagnets, the two electromagnets and the one permanent. The magnets are arranged coaxially.

  In another aspect of the present invention, an inner case is provided in the case, which is movable with respect to the case and has opposite front and rear sidewalls sandwiching the electromagnet, and the two permanent magnets are provided. One is embedded in the front side wall, the other of the two permanent magnets is embedded in the rear side wall, and one end of the rod is coupled to the front side wall.

  In another aspect of the present invention, an operating portion is provided which extends from the rear side wall of the inner case and protrudes out of the case.

  In another aspect of the present invention, a support movable relative to the case and penetrating the electromagnet and the permanent magnet is provided, and one end of the support is coupled to the rod in the case, The other end of the support portion protrudes out of the case.

  According to the present invention, a fuel lid actuator can be realized which does not generate self-oscillation vibration noise, has a small number of parts, and has a simple structure.

It is a figure showing the appearance of the actuator for fuel lids concerning a 1st embodiment. FIG. 2 is a view showing an internal structure of a fuel lid actuator according to a first embodiment. It is another figure which shows the internal structure of the actuator for fuel lids which concerns on 1st Embodiment. It is a figure which shows the internal structure of the actuator for fuel lids which concerns on 2nd Embodiment.

First Embodiment
Hereinafter, an example of a fuel lid actuator (hereinafter referred to as “actuator”) to which the present invention is applied will be described in detail with reference to the drawings. As shown in FIG. 1, the actuator 1A according to the present embodiment includes a case 2 made of a synthetic resin, a rod 3 protruding from a front surface 2 a of the case 2, and an operating portion 4 protruding from a back surface 2 b of the case 2. And. The case 2 is composed of a lower case 5 and an upper case 6 which are mutually filled up, and a housing space is provided inside. Moreover, the rod 3 and the operation part 4 can move in the axial direction.

  The actuator 1A is attached in the vicinity of the filler opening of a vehicle such as an automobile, and locks and unlocks a fuel lid which is a lid of the filler opening. More specifically, the actuator 1A is installed in the space between the body panel and the lining in the vicinity of the filler port. At this time, the tip of the rod 3 penetrates the body panel and protrudes out of the body panel. On the other hand, the fuel lid is rotatably provided near the filler opening by a hinge. An abutment portion is provided on the inner surface of the fuel lid, and an engagement portion ("engagement hole" in the present embodiment) is provided on the abutment portion.

  The rod 3 shown in FIG. 1 is movable with respect to the case 2 and the “lock position” in which the projection length (L) relative to the case 2 is relatively long and the projection length (L) relative to the case 2 relative It is reciprocally driven to a short "unlock position". When the rod 3 is moved from the unlock position to the lock position, the tip end of the rod 3 is inserted into the engagement hole provided in the contact portion of the fuel lid, and the rotation of the fuel lid is restricted. That is, the fuel lid is locked and locked. On the other hand, when the rod 3 is moved from the lock position to the unlock position, the tip of the rod 3 inserted in the engagement hole provided in the contact portion of the fuel lid is pulled out of the engagement hole, and the fuel lid is restricted from rotating. Is released. That is, the fuel lid is unlocked and unlocked. As described above, the “lock position” of the rod 3 is a position at which the fuel lid is locked, and the “unlock position” of the rod 3 is a position at which the fuel lid is unlocked. A tapered surface 3a is formed at the tip of the rod 3 against which the contact portion of the fuel lid abuts when the fuel lid is closed.

  Please refer to FIG. 2 and FIG. The rod 3 shown in FIG. 2 is in the locked position and the rod 3 shown in FIG. 3 is in the unlocked position. Inside the case 2, an inner case 10 made of a synthetic resin, two permanent magnets 21 and 22, and an electromagnet 30 are provided. The permanent magnets 21 and 22 and the electromagnet 30 are coaxially arranged, and the electromagnet 30 is located between the two permanent magnets 21 and 22.

  The inner case 10 is movable with respect to the case 2 and includes a front side wall 11 and a rear side wall 12 opposite to each other with the electromagnet 30 interposed therebetween. One of the two permanent magnets 21 and 22 is incorporated in the front side wall 11 of the inner case 10, and the other of the two permanent magnets 21 and 22 is incorporated in the rear side wall 12 of the inner case 10. In the following description, the permanent magnet 21 contained in the front side wall 11 is referred to as “first permanent magnet 21”, and the permanent magnet 22 contained in the rear side wall 12 is referred to as “second permanent magnet 22”. There is. However, such distinction is only for convenience of explanation. The first permanent magnet 21 and the second permanent magnet 22 held by the inner case 10 movable with respect to the case 2 move in the case 2 together with the inner case 10.

  The electromagnet 30 includes an iron core 31 and a solenoid coil 32 provided around the iron core 31. The direction of the magnetic pole is changed by switching the direction of energization of the solenoid coil 32. The electromagnet 30 is disposed between the front side wall 11 and the rear side wall 12 of the inner case 10 and is surrounded by the inner case 10. The electromagnet 30 can not move with respect to the case 2.

  That is, in the case 2, the inner case 10 movable with respect to the case 2, the first permanent magnet 21 and the second permanent magnet 22, and the electromagnet 30 immovable with respect to the case 2 are accommodated. ing.

  One end (rear end) of the rod 3 is coupled to the front side wall 11 of the inner case 10. Specifically, the engagement convex portion 13 formed on the surface of the front side wall 11 and the engagement concave portion 7 formed on the outer peripheral surface of the rod 3 are engaged with each other. That is, the inner case 10 and the rod 3 are integrated. Further, in the inner case 10, an operation portion 4 extending from the surface of the rear side wall 12 is integrally formed. The operation unit 4 has a cylindrical shape similar to that of the rod 3 and is coaxial with the rod 3. One end side of the operation unit 4 protrudes to the outside (rearward) of the case 2 through a through hole formed in the back surface 2 b of the case 2.

  The lower part of the case 2 is provided with a slot 15 into which a connector (not shown) is inserted and removed, and a connection terminal 15 a is provided in the slot 15. In other words, the lower part of the case 2 is provided with a female connector. When the connector is inserted into the slot 15, the electromagnet 30 and the power supply (not shown) are electrically connected via the connection terminal 15a.

  Next, the operation of the actuator 1A will be described. When the electromagnet 30 (solenoid coil 32) shown in FIG. 3 is energized in a predetermined direction, a repulsive force is generated between the electromagnet 30 and the first permanent magnet 21, and at the same time, the electromagnet 30 and the second permanent magnet 22 are produced. There is a suction between them. Then, the inner case 10 including the permanent magnets 21 and 22 moves in the first direction (right direction in FIG. 3), and the rod 3 integrated with the inner case 10 also moves in the first direction. That is, the rod 3 further protrudes from the case 2. As a result, the rod 3 is moved from the unlocked position shown in FIG. 3 to the locked position shown in FIG. 2, and the fuel lid is locked. Specifically, the protrusion length (L) of the rod 3 with respect to the case 2 is increased, and the tip of the rod 3 is inserted into the engagement hole of the fuel lid.

  On the other hand, when the electromagnet 30 (solenoid coil 32) shown in FIG. 2 is energized in a predetermined direction (a direction reverse to the energization direction when moving the rod 3 from the unlock position to the lock position), the electromagnet At the same time as a suction force is generated between 30 and the first permanent magnet 21, a repulsive force is generated between the electromagnet 30 and the second permanent magnet 22. Therefore, the inner case 10 including the permanent magnets 21 and 22 is moved in the second direction (left direction in FIG. 2) opposite to the first direction, and the rod 3 integrated with the inner case 10 is also moved in the second direction. Moving. That is, the rod 3 is drawn into the case 2. As a result, the rod 3 is moved from the locked position shown in FIG. 2 to the unlocked position shown in FIG. 3, and the fuel lid is unlocked. Specifically, the protrusion length (L) of the rod 3 with respect to the case 2 is reduced, and the tip of the rod 3 is removed from the engagement hole of the fuel lid.

  As shown in FIGS. 2 and 3, at both ends of the electromagnet 30 (solenoid coil 32), cushioning members 33 for alleviating shock and sound when the front side wall 11 and the rear side wall 12 of the inner case 10 collide with each other It is provided.

  If the rod 3 can not be moved as described above due to energization of the electromagnet 30 for some reason, the end of the operation portion 4 protruding from the back surface 2b of the case 2 is pinched to perform the operation. The rod 3 can be moved by pushing or pulling the part 4. Therefore, it is preferable to install the actuator 1A so that the operation unit 4 can be accessed from inside the luggage compartment or in the luggage compartment.

  The actuator 1A is mounted on a vehicle capable of remotely operating the door lock. In this case, an actuator for operating the door lock (hereinafter referred to as "door actuator") can be interlocked with the actuator 1A for operating the fuel lid. Specifically, when the door lock is locked by the door actuator, the fuel lid is simultaneously locked by the actuator 1A, and when the door lock is unlocked by the door actuator, the fuel lid is simultaneously unlocked by the actuator 1A. The two actuators can be interlocked with each other.

  The actuator 1A uses a magnet unit including the permanent magnets 21 and 22 and the electromagnet 30 as a drive source, and does not use a motor as a drive source. In addition, no drive source other than the magnet unit and a conversion mechanism for converting the movement direction are provided. Therefore, the actuator 1A does not generate self-oscillation noise, and the number of parts is small and the structure is simple. Furthermore, the actuator 1A can mount the door lock on a remotely controllable vehicle and can be interlocked with the door actuator. In this case, since the actuator 1A does not generate self-oscillation vibration noise, the operator does not hear self-oscillation noise after the operation noise when the door and the fuel lid are switched from the unlocked state to the locked state becomes quiet. And do not misunderstand that the door or the fuel lid did not switch from the unlocked state to the locked state normally.

Second Embodiment
Hereinafter, another example of a fuel lid actuator (hereinafter referred to as “actuator”) to which the present invention is applied will be described in detail with reference to FIG. However, the actuator 1B shown in FIG. 4 has the same basic structure as the actuator 1A according to the first embodiment. Therefore, only differences between the actuator 1B according to the present embodiment and the actuator 1A according to the first embodiment will be described, and the description of the same configuration will be omitted. The same or substantially the same components as those shown in FIGS. 1 to 3 are denoted by the same reference numerals in FIG.

  As shown in FIG. 4, the actuator 1 </ b> B according to the present embodiment has two electromagnets 41 and 42 and one permanent magnet 43 disposed between the two electromagnets 41 and 42. That is, the actuator 1 </ b> B includes a magnet unit configured of electromagnets 41 and 42 and permanent magnets 43 coaxially disposed. In the following description, the electromagnet 41 may be referred to as “first electromagnet 41” and the electromagnet 42 may be referred to as “second electromagnet 42”. However, such distinction is only for convenience of explanation.

  The first electromagnet 41, the second electromagnet 42 and the permanent magnet 43 constituting the magnet unit are supported by a rod-like support 50 movable with respect to the case 2. Specifically, the support portion 50 penetrates the first electromagnet 41, the permanent magnet 43, and the second electromagnet 42 in this order from the right side to the left side of FIG. 4 and protrudes from the first electromagnet 41. The rod 3 is coupled to one end of the support 50, and the other end of the support 50 protruding from the second electromagnet 42 protrudes from the back surface 2b of the case 2 to the outside of the case 2. However, while the permanent magnet 43 is fixed to the support 50 but not fixed to the case 2, the first electromagnet 41 and the second electromagnet 42 are fixed to the case 2 while not fixed to the support 50. ing.

  The rod 3 shown in FIG. 4 is in the locked position. When the first electromagnet 41 and the second electromagnet 42 are energized in a predetermined direction, a repulsive force is generated between the first electromagnet 41 and the permanent magnet 43 and at the same time, suction is performed between the second electromagnet 42 and the permanent magnet 43. Force is generated. Then, the support 50 moves with the permanent magnet 43 in the second direction (left direction in FIG. 4), and the rod 3 coupled to the support 50 also moves in the second direction. That is, the rod 3 is drawn into the case 2. As a result, the rod 3 moves from the lock position to the unlock position, and the fuel lid is unlocked. Thereafter, when the current supply direction to the first electromagnet 41 and the second electromagnet 42 is reversed, the support portion 50 moves together with the permanent magnet 43 in the first direction (right direction in the drawing of FIG. 4), and the rod 3 is unlocked. Move from to the lock position.

  When the rod 3 can not be moved as described above due to energization of the first electromagnet 41 and the second electromagnet 42 for some reason, the support 50 protruding from the back surface 2 b of the case 2 The rod 3 can be moved by pinching the end to push or pull the support 50.

  The present invention is not limited to the above embodiment, and various modifications can be made without departing from the scope of the invention. For example, in the present specification, the embodiment has been described in which locking and unlocking of the fuel lid is performed by inserting and removing the tip end of the rod into the engagement hole provided inside the fuel lid. However, the engagement structure between the fuel lid and the rod for locking and unlocking the fuel lid is not limited to the above structure. Further, the fuel lid actuator to which the present invention is applied can be operated remotely from the outside of the vehicle on which it is mounted, or can be operated from the inside of the vehicle. Furthermore, the vehicle on which the fuel lid actuator to which the present invention is applied is mounted is not limited to a vehicle in which the door lock can be remotely controlled or a vehicle in which locking and unlocking of the door and the fuel lid are interlocked.

1A, 1B Fuel Lid Actuator (Actuator)
DESCRIPTION OF SYMBOLS 2 case 2a front 2b back 3 rod 3a taper surface 4 operation part 5 lower case 6 upper case 7 engagement recessed part 10 inner case 11 front side wall 12 rear side wall 13 engagement convex part 15 slot 15a connection terminal 21 permanent magnet (first permanent magnet )
22 Permanent Magnet (Second Permanent Magnet)
30 electromagnet 31 iron core 32 solenoid coil 33 buffer member 41 electromagnet (first electromagnet)
42 electromagnet (second electromagnet)
43 Permanent Magnet 50 Support

Claims (6)

With the case,
A permanent magnet housed in the case and movable relative to the case;
An electromagnet housed in the case and immovable relative to the case;
A rod movable with respect to the case and reciprocably driven to a locking position for locking the fuel lid and an unlocking position for unlocking the fuel lid;
When the electromagnet is energized to move the permanent magnet in the first direction, the rod is driven from the unlock position to the lock position,
The rod is driven from the lock position to the unlock position when the permanent magnet is moved in a second direction opposite to the first direction by reversing the current supply direction to the electromagnet.
Actuator for fuel lid. In the fuel lid actuator according to claim 1,
Two of the permanent magnets,
And one of the electromagnets disposed between the two permanent magnets;
The two permanent magnets and the one electromagnet are arranged coaxially,
Actuator for fuel lid. In the fuel lid actuator according to claim 1,
Two of the electromagnets,
One permanent magnet disposed between the two electromagnets;
The two electromagnets and the one permanent magnet are coaxially arranged,
Actuator for fuel lid. The fuel lid actuator according to claim 2,
An inner case is provided in the case, the inner case being movable relative to the case and having opposing front and rear side walls sandwiching the electromagnet.
One of the two permanent magnets is incorporated in the front side wall, and the other of the two permanent magnets is incorporated in the rear side wall,
One end of the rod is connected to the front side wall,
Actuator for fuel lid. In the fuel lid actuator according to claim 4,
An operating portion extending from the rear side wall of the inner case and protruding outside the case;
Actuator for fuel lid. In the fuel lid actuator according to claim 3,
A support movable relative to the case and penetrating the electromagnet and the permanent magnet;
One end of the support portion is coupled to the rod in the case, and the other end of the support portion protrudes out of the case.
Actuator for fuel lid.

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