JP2001065658A - Linear actuator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the number of part items to simplify structure by enclosing an output rod, a sector and a motor in a common case in a linear actuator used for an opener for unlocking a fuel filler lid of a vehicle. SOLUTION: When the output rod 8 is at a lock-on device C, a hole locking part 8a2 is locked into a hole of the fuel filler lid. When an open switch is operated on in this state, a worm shaft 5 is rotated by the motor 4 accommodated in the case 1 together with the output rod 8, and the output rod 8 is moved into a lock-off position against a return spring 7 through the rotation of the sector 6. At this time, a case colliding part 9c of a damper 9 collides with a damper receiving part 2j1 of a center plate 2j to absorb the impact of the output rod 8. With the movement of the output rod 8, the hole locking part 8a2 comes off the hole of the fuel filler lid, and the filler lid is opened.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a linear actuator used for a fuel filler lid opener for unlocking a fuel filler lid of a vehicle, for example.

[0002]

2. Description of the Related Art As a device for unlocking a fuel filler lid of a vehicle, one disclosed in Japanese Utility Model Laid-Open Publication No. 6-71815 is known.

[0003]

However, the above arrangement has a problem that the number of components is increased because a harness and a lock wire are required.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide a linear actuator having a simple structure with a reduced number of parts.

[0005]

Configuration of the Invention

[0006]

According to a first aspect of the present invention, there is provided a linear actuator including a case, a motor housed in the case and having an armature shaft that is rotated by energization, and a worm shaft connected to the armature shaft of the motor. And a sector rotatably supported by the case and meshed with the worm shaft and rotated by the rotation of the worm shaft, and a sector that penetrates the case and both ends protrude from the case and are supported by the case and connected to the sector. An output rod that is linearly driven from a first stationary position to a second stationary position by rotation of the sector, a return spring that biases the output rod to the first stationary position, and an output rod that is driven by an external force. Is provided with an idle swing mechanism for preventing the sector from being turned by the external force when it is moved from the first stationary position to the second stationary position. It is characterized in that.

In the linear actuator according to a second aspect of the present invention, in addition to the configuration of the first aspect, the idling mechanism further comprises:
A sector shaft formed in the sector, and a sector shaft coupling / sector shaft empty swing hole capable of loosely inserting the sector shaft with a length greater than the outer diameter of the sector shaft in the axial direction of the output rod; It is characterized by doing.

In the linear actuator according to the first and second aspects of the present invention, each of the output rod, the sector and the motor is housed in a case. Therefore, the number of parts does not increase.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION

[0010]

1 to 17 show an embodiment of a linear actuator according to the present invention.

The illustrated linear actuator 1 mainly includes a lower case 2, an upper case 3, a motor 4, a worm shaft 5, a sector 6, a return spring 7, an output rod 8, a damper 9, and an idling mechanism 20. This linear actuator 1 is used for a fuel filler lid opener.

The lower case 2 has a substantially rectangular shape with one side opened. The lower case 2 includes a motor mounting portion 2a, a worm shaft support portion 2b, a connector portion 2c, a sector support shaft 2d, an output rod support portion 2e, a first vehicle body side temporary fixing portion 2f, and a second vehicle body side temporary fixing portion. A vehicle body-side fixing portion 2g is formed.

The motor 4 is housed in the motor mounting portion 2a. The motor 4 accommodates an armature (not shown) in a motor yoke 4a and an end cover 4b coupled to the motor yoke 4a. An armature shaft 4c (shown in FIG. 1) provided on the armature is arranged to protrude from the end cover 4b.

In the motor 4, the first brush terminal 4d is electrically connected to the first contactor 10 disposed in the connector portion 2c, and the second brush terminal 4e is also disposed in the connector portion 2c. It is electrically connected to the second contactor 11.

The motor 4 is energized from the first brush terminal 4d to the second brush terminal 4e to rotate the armature shaft 4c.

A worm shaft 5 is provided on the worm shaft support 2b.
Are rotatably supported. The worm shaft 5 has a base end integrally connected to the armature shaft 4c of the motor 4 and rotates together with the armature shaft 4c. The worm shaft 5 meshes with the sector 6.

First and second contactors 10, 11 are arranged in the connector section 2c. Connector part 2c
The first and second contactors 10 and 11 are provided with a connector provided in a control circuit (not shown).
Are electrically connected to the control circuit.

The sector supporting portion 2d has a round rod-like shaft shape and is formed to protrude from the bottom plate 2h of the lower case 2. The sector 6 is rotatably supported by the sector support 2d.

The sector 6 includes a fan-shaped tooth 6a.
Is formed. At the center of the sector 6, a hole 6c into which the sector support 2d is inserted is formed. A plate-like protruding lever 6d is formed on the opposite side of the tooth 6a with respect to the hole 6c.
On the lever 6d, a sector shaft 6e formed in a round bar shape and constituting a part of the idling mechanism 20 is formed so as to protrude. The sector shaft 6e has a diameter L1 shown in FIG.
With.

The sector 6 is rotated counterclockwise in FIG. 1 from the first position A shown in FIG. 1 by the rotation of the worm shaft 5 because the teeth 6a mesh with the worm shaft 5. . Then, the sector 6 is turned to the second position B shown in FIG. 5 via the state shown in FIG. At this time, the sector axis 6e of the sector 6 moves along an arc from the first position A to the second position B around the sector support 2d of the lower case 2. This sector axis 6e
Are connected to a sector shaft insertion hole 8e0 formed in the output rod 8.

The output rod support 2e includes a first output rod support 2e1, a second output rod support 2e2, and a third output rod support 2e2.
Of the output rod support portion 2e3.

The first output rod supporting portion 2e1 is formed by cutting a first side plate 2i disposed at one end of the lower case 2 into a U-shape from its upper end edge. The first shaft portion 8a formed on the output rod 8 is housed in the first output rod support portion 2e1. At the other end of the first side plate 2i, a first case collision portion 9 formed on the damper 9 is provided.
A first damper receiving portion 2i1 where b and 9b collide is formed.

The second output rod support 2e2 is formed by cutting a central plate 2j disposed at the center of the lower case 2 into a U-shape from the upper edge thereof. The second output rod support 2e2 has a second output rod 8
The shaft portion 8b is housed. At one end of the center plate 2j,
A second case colliding portion 9c formed on the damper 9 has a second damper receiving portion 2j1 with which the second case colliding portion 9c collides.

The third output rod supporting portion 2e3 is formed by cutting a second side plate 2k disposed at the other end of the lower case 2 into a U-shape from its upper end edge. The third shaft 8c formed on the output rod 8 is housed in the third output rod support 2e3. At one end of the second side plate 2k, a return spring locking portion 2k1 for locking the other end of the return spring 7 is formed.

The output rod 8 has a length larger than the width from the first side plate 2i to the second side plate 2k of the lower case 2. The output rod 8 has a first shaft portion 8a, a damper mounting portion 8d, a second shaft portion 8b, a sector connecting portion 8e, a return spring stopper portion 8 from one end to the other end.
f, the third shaft portion 8c is formed.

The first shaft portion 8a has a square rod shape. At the tip of the first shaft portion 8a, a hole engaging portion 8a2 having an inclined surface 8a1 and being engaged with a hole 51 provided in the fuel filler lid 50 shown in FIG. 16 is formed. The first shaft portion 8a is accommodated in the first output rod support portion 2e1 of the lower case 2 so as to be movable in the axial direction.

The damper mounting portion 8d is formed continuously with the first shaft portion 8a. This damper attachment portion 8d includes
As shown in FIG. 5, a pair of damper mounting projections 8d1, 8d1 having a T-shaped cross section are provided. A damper 9 is attached to the pair of damper attachment protrusions 8d1, 8d1.

The damper 9 is formed in a substantially rectangular shape using rubber as a material. The damper 9 is provided with a main body 9a. The main body 9a is fitted so as to cover a pair of damper mounting projections 8d1, 8d1 formed on the damper mounting portion 8d of the output rod 8. On one end side of the main body 9a,
A pair of first case collision portions 9b, 9b each having a semi-cylindrical shape and protruding toward the first side plate 2i side of the lower case 2 are formed. The other end of the main body 9a has a semi-cylindrical shape similar to the first case collision portion 9b,
a pair of second case collision portions 9c protruding toward the j side,
9c are respectively formed.

When the output rod 8 reaches the lock-on position C, the first side plate 2i of the lower case 2
A first case collision portion 9b that collides with a first damper receiving portion 2i1 formed at
And a second case collision portion 9c that collides with a second damper receiving portion 2j1 formed on the center plate 2j of the lower case 2 when the main body 9a is reached. For this reason, the buffering elastic member becomes a common single unit as compared with the one that unlocks the lock mechanism and the one that is independently disposed on the other side on the return side, so that the number of assembly steps is reduced. .

The second shaft portion 8b has a square rod shape similar to the first shaft portion 8a. The second shaft portion 8b is formed continuously with the damper attachment portion 8d. The second shaft portion 8b is accommodated in the second output rod support portion 2e2 of the lower case 2 so as to be movable in the axial direction.

The sector connecting portion 8e is formed continuously with the second shaft portion 8b. In the central part of the sector connecting part 8e,
Sector shaft insertion hole 8 that constitutes another part of miss swing mechanism 20
e0 is formed.

The output rod 8 is inserted into the sector shaft insertion hole 8e0.
A first guide wall 8e1 arranged at one end along the length direction of the first and second guide walls 8e arranged at the other end
2 and third and fourth guide walls 8e3, 8e4 arranged adjacent to the first and second guide walls 8e1, 8e2, respectively.

The length L2 of the sector shaft insertion hole 8e0 constituting the swing mechanism 20 is selected to be a size corresponding to the amount of movement of the sector shaft 6e in the axial direction of the output rod 8 when the sector 6 rotates. Have been. That is, when the fuel filler lid 50 is manually closed when the output rod 8 is in the lock-on position C, the fuel filler lid 50 is closed.
Hole 51 is a hole locking portion 8a of the first shaft portion 8a of the output rod 8.
2 by colliding with the inclined surface 8a1 formed in
The output rod 8 is forcibly moved from the lock-on position C to the lock-off position D by an external force applied from the fuel filler lid 50. At this time, as shown in FIG. The reason is that the output rod 8 alone can move to the lock-off position D alone without performing the swing operation without turning the sector 6 without pressing the sector shaft 6e.

The width L3 of the sector shaft insertion hole 8e0 is selected to be a size corresponding to the displacement of the sector shaft 6e in the axial direction of the output rod 8 when the sector 6 rotates in an arc shape. Therefore, both when the sector 6 rotates from the first position A to the second position B, and when the sector 6 rotates back from the second position B to the first position A, The sector shaft 6e of the sector 6 is disposed in the sector shaft insertion hole 8e0 of the output rod 8, and the sector shaft 6e of the sector 6 and the sector shaft insertion hole 8e0 of the output rod 8 do not fall into a locked state.

The return spring stopper 8f is formed continuously with the sector connecting portion 8e. The return spring stopper 8f has a larger outer diameter than the third shaft 8c. One end of the return spring 7 is locked to the return spring stopper 8f.

The third shaft portion 8c is provided with a return spring stopper portion 8f.
To form a round bar. This third shaft portion 8c
Is movably accommodated in the third output rod supporting portion 2e3 of the lower case 2 in the axial direction, and the return spring 7 is extrapolated.

An emergency unlocking hook 8c1 is formed at the end of the third shaft 8c. The hook 8c1 is used to move the output rod 8 from the lock-on position C to the lock-off position D by pulling the motor 4 from the inside of the trunk when the motor 4 cannot be energized due to a dead battery or the like. Used for

The return spring 7 is a compression coil spring. The return spring 7 has a return spring stopper 8f at one end and a return spring locking portion 2 of the second side plate 2k of the lower case 2 at the other end.
Each is locked to k1 and accumulates elastic repulsion.
The return spring 7 constantly urges the return spring stopper 8f toward the center plate 2j.

The output rod 8 is supported by first, second, and third output rod support portions 2e1, 2e2, and 2e3 of the lower case 2 so as to be linearly movable in the axial direction. The output rod 8 is normally in the lock-on position C shown in FIG. 1 by the return spring 7 at the time when the motor 4 is not energized.
When the output rod 8 is at the lock-on position C, as shown in FIG. 16, the hole locking portion 8a2 of the first shaft portion 8a is formed.
Is locked in the hole 51 of the fuel filler lid 50, and the fuel filler lid 50 is closed. At this time, in the damper 9, the first case collision portion 9b is in contact with the first damper receiving portion 2i1 of the first side plate 2i.

The output rod 8 is energized to the motor 4 so that the sector 6 moves from the first position A shown in FIG.
Is rotated to the second position B shown in FIG. 1, the sector shaft 6e of the sector 6 collides with the second guide wall 8e2 of the sector shaft insertion hole 8e0 and is pressed leftward in FIG. It moves linearly to the lock-off position D shown in FIG. Then, when the output rod 8 moves to the lock-off position D, as shown in FIG. 17, the hole locking portion 8a2 of the first shaft portion 8a is disengaged from the hole 51 of the fuel filler lid 50, and the fuel filler lid 50 is moved. Is opened by a return spring (not shown). At this time, in the damper 9, the first case collision portion 9b is separated from the first damper receiving portion 2i1 of the first side plate 2i, and the second case collision portion 9c is moved to the second damper receiving portion 2j1 of the central plate 2j. To absorb the impact when the output rod 8 is driven.

When the power supply to the motor 4 is cut off, the output rod 8 is forcibly returned to the lock-on position C by the elastic restoring force of the return spring 7. At this time, the sector 6 is returned to the first position A by being pressed rightward in FIG. 5 in a state where the sector shaft 6e collides with the second guide wall 8e2 of the sector shaft insertion hole 8e0, and is rotated. Sector 6
The worm shaft 5 and the armature shaft 4c of the motor 4 are also returned and rotated. The damper 9 is the first
The case collision portion 9b collides with the first damper receiving portion 2i1 of the first side plate 2i.

When the fuel filler lid 50 is manually closed, the output rod 8 collides with the inclined surface 8a1 formed in the hole locking portion 8a2 of the first shaft portion 8a when the fuel filler lid 50 is manually closed. It is forcibly moved to the lock-off position D. At this time, since the sector shaft insertion hole 8e0 constituting the idle swing mechanism has a length L2 larger than the diameter L1 of the sector shaft 6e and a width L3 larger than the diameter L1 of the sector shaft 6e. As shown in FIG. 6, since the sector shaft 6e is not pressed, the idle swing operation in which only the output rod 8 moves to the lock-off position D alone while the sector 6 is at the first position A is performed. Is

An upper case 3 is fitted to the lower case 2 so as to cover the opening. At the center of the upper case 3, as shown in FIG.
A guide 3a protruding in a cylindrical shape is formed corresponding to the sector support portion 2d. Guide 3a is lower case 2
The screw 12 is screwed into the sector support 2d from outside the upper case 3 to prevent the sector 6 from floating.

The first vehicle body side temporary fixing portion 2f is
Are formed in an L-shaped plate shape on the third side plate 2m. A temporary fastening hook 2f1 is formed at the tip of the first vehicle body temporary fastening portion 2f. The first vehicle body side temporary fixing portion 2f includes:
When attached to the vehicle body, as shown in FIG.
It is used to perform temporary fixing by being hooked on the sub-panel 53 on the inner side of the inner panel 52 arranged in the fuel filler lid portion.

Second vehicle body side temporary fixing portion and vehicle body side fixing portion 2g
Is formed in a substantially cylindrical shape outward from one end of the first side plate 2 i of the lower case 2 and one end of the upper case 3, and is formed to protrude in the axial direction of the output rod 8. The first shaft portion 8a of the output rod 8 is inserted through the second vehicle body side temporary fixing portion and vehicle body side fixing portion 2g.

As shown in FIG. 11, a neck portion 2g0 is provided at the base end of the second vehicle body side temporary fixing portion and vehicle body side fixing portion 2g.
Is provided. As shown in FIG. 10, the neck 2g0 has a first wall 2g flattened along its cylindrical direction.
1, an arc-shaped second wall 2g2 arranged opposite to the first wall 2g1, and first and second walls 2g1 and 2g.
3 and 4 g of arc-shaped third and fourth walls 2 g 3 and 2 g 4 respectively disposed between the second wall 2 a 2 and the fourth wall 2 g 4 of the second wall 2 a 2.
And a projection 2g5 arranged at the side end.

As shown in FIG. 10, a head 2g6 is attached to the second vehicle body side temporary fixing portion and vehicle body side fixing portion 2g.
Is provided. The head 2g6 has a first wall 2g1 described above, a second wall 2g2 also described above, and first and second ears protruding in a fan shape between the first and second walls 2g1 and 2g2, respectively. Parts 2g7 and 2g8 are formed.

Second vehicle body side temporary fixing portion and vehicle body side fixing portion 2g
Is the inner panel 52 of the fuel filler lid
Is temporarily fixed by being inserted into the mounting hole 52 a formed in the inner panel 52, and then tightened and fixed to the inner panel 52 by the fastening member 13. As shown in FIG. 11, the mounting hole 52a of the inner panel 52 has a flat first receiving surface 52a1 and a first receiving surface 52a1.
Arc-shaped second receiving surface 52a2
And fan-shaped third and fourth receiving surfaces 52a3, 5 disposed between the first and second receiving surfaces 52a1, 52a2, respectively.
2a4 are formed respectively.

Here, a procedure for mounting the vehicle body using the first vehicle body side temporary fixing portion 2f and the second vehicle body side temporary fixing portion and vehicle body side fixing portion 2g will be described with reference to FIGS.

First, as shown in FIG. 9, the linear actuator 1 is disposed behind the inner panel 52 in the fuel filler lid portion, that is, on the trunk side, and as shown in FIG. The temporary fixing portion / vehicle side fixing portion 2g is inserted into the mounting hole 52a of the inner panel 52, and the first vehicle body side temporary fixing portion 2f is hooked on the sub panel 53.

Second vehicle body side temporary fixing portion and vehicle body side fixing portion 2g
As shown in FIG. 11, the head 2g6 has the mounting hole 5
2a, the first wall 2g1 is supported by the first receiving surface 52a1 of the mounting hole 52a, and the second wall 2g1 is supported by the second wall 2g1.
The wall 2g2 of the mounting hole 52a is supported by the second receiving surface 52a2 of the mounting hole 52a, and the projection 2g5 is hooked on the end of the second receiving surface 52a2 of the mounting hole 52a. Is done. At this time, in the linear actuator 1, the neck 2g0 has the inner panel 5
It is only held in the second mounting hole 52 a and is not fixed to the inner panel 52.

Then, as shown in FIG. 12, the linear actuator 1 temporarily fixed to the inner panel 52
Is pushed down in the figure. Then, as shown in FIG. 13, in the neck 2g0, the first wall 2g1 is moved downward while being supported by the first receiving surface 52a1 of the mounting hole 52a, and the projection 2g5 is moved to the second receiving portion of the mounting hole 52a. By disengaging from the end of the surface 52a2, the second wall 2
g2 comes into contact with the second receiving surface 52a2 of the mounting hole 52a, and the movement is restricted at this position.

Then, as shown in FIG. 14, the fastening member 13 is attached to the neck 2g0 through the head 2g6,
By turning the fastening member 13 clockwise approximately 90 degrees in the figure, as shown in FIG.
3, the inner panel 52 and the first side plate 2i are in close contact with each other, and the linear actuator 1 is fixed to the inner panel 52.
At this time, the fastening by the fastening member 13 is firmly performed by an unillustrated inclined surface formed on the neck 2g0 side of the head 2g6.

In the linear actuator 1 having such a structure, the output rod 8 for unlocking the fuel filler lid 50, the motor 4, the worm shaft 5, and the sector 6 are housed in the single lower case 2. Therefore, the attachment to the vehicle body is simplified as compared with the conventional one in which the lock mechanism and the solenoid are independently arranged.

The linear actuator 1 having such a structure is provided with the inner panel 52 of the vehicle body by the above-described procedure.
The connector of the control circuit is mounted on the connector section 2c and mounted on the vehicle body.

When the output rod 8 is at the lock-on position C, the hole locking portion 8a2 is locked in the hole 51 of the fuel filler lid 50 as shown in FIG.
The fuel filler lid 50 is closed.

Then, when the fuel filler lid open switch provided in the control circuit is turned on, the current flows to the first and second brush terminals 4d and 4e of the motor 4 through the first and second contactors 10 and 11. Is supplied, the armature shaft 4c is rotated, the worm shaft 5 is rotated, the sector 6 is rotated from the first position A to the second position B, and the output rod 8 is opposed to the return spring 7. It is moved linearly to the lock-off position D. At this time, the damper 9 is configured such that the first case collision portion 9b
Away from the damper receiving portion 2i1 of the second case collision portion 9c.
Collides with the second damper receiving portion 2j1 of the center plate 2j, thereby absorbing an impact when the output rod 8 is driven. Then, the hole locking portion 8a2 of the output rod 8 is disengaged from the hole 51 of the fuel filler lid 50, and the fuel filler lid 50 is opened as shown in FIG.

Since the fuel filler lid open switch is switched off after being switched on, the power supply to the motor 4 is cut off, and the output rod 8 is forcibly moved to the lock-on position C by the elastic restoring force of the return spring 7. And the damper 9 is moved to the first case collision portion 9b.
Collides with the first damper receiving portion 2i1 of the first side plate 2i. In the sector 6, the sector shaft 6e has the sector shaft insertion hole 8e0.
Is pressed in a state where it collides with the second guide wall 8e2, and is returned to the first position A, and the sector 6 is returned and rotated, so that the worm shaft 5 and the armature shaft 4c of the motor 4 are also returned and rotated. Is done.

When the fuel filler lid 50 is manually closed, the hole 51 of the fuel filler lid 50 collides with the inclined surface 8a1 of the hole locking portion 8a2 of the output rod 8, and the output rod 8 is driven by the idle swing mechanism 20.
An idle swing operation is performed in which only the single case is forcibly moved to the lock-off position D, and the damper 9 is
c collides with the second damper receiving portion 2j1 of the center plate 2j.
Then, after the fuel filler lid 50 is closed, the output rod 8 is returned to the lock-on position C again by the return spring 7, whereby the fuel filler lid 50 is locked, and the damper 9 is moved to the first case collision portion. 9b collides with the first damper receiving portion 2i1 of the first side plate 2i.

As described above, the linear actuator 1
Since the output rod 8 for unlocking the fuel filler lid 50, the motor 4, the worm shaft 5, and the sector 6 are housed in the single lower case 2, the number of parts does not increase, and The mounting on the vehicle body is easily performed without complicating the layout.

Further, in the linear actuator 1, when the open fuel filler lid 50 is closed by hand, the output rod 8 is moved from the lock-on position C to the lock-off position D by an external force applied from the fuel filler lid 50. However, since the sector 6 is not turned by the external force at that time by the idling mechanism 20 and only the output rod 8 is moved, the return spring 7 becomes simpler, so that the structure is not complicated.

[0062]

As described above, according to the linear actuator of the present invention, each of the output rod, the sector, and the motor is housed in the case. Therefore, the number of parts does not increase. Therefore, there is an excellent effect that the number of parts is reduced and a simple structure is obtained.

[Brief description of the drawings]

FIG. 1 is a front view illustrating an internal structure of an embodiment of a linear actuator according to the present invention.

FIG. 2 is a cross-sectional view of the linear actuator shown in FIG.

FIG. 3 is a sectional view around a sector in the linear actuator shown in FIG. 1;

FIG. 4 is a front view illustrating a state where the output rod in the linear actuator shown in FIG. 1 is being driven to a lock-off position.

FIG. 5 is a front view illustrating a state in which an output rod in the linear actuator shown in FIG. 1 is driven to a lock-off position.

FIG. 6 is a front view illustrating a state when the output rod in the linear actuator shown in FIG. 1 performs an idle swing operation.

FIG. 7 is an external perspective view of each component for explaining an assembling relationship of an output rod, a damper, and a sector to a case in the linear actuator shown in FIG. 1;

8 is an external perspective view illustrating a state in which an output rod, a damper, and a sector in the linear actuator shown in FIG. 7 are assembled to a case.

FIG. 9 is an external perspective view illustrating a procedure for attaching the linear actuator shown in FIG. 1 to a vehicle body.

10 is an external perspective view illustrating a procedure for attaching the linear actuator shown in FIG. 1 to a vehicle body.

11 is a cross-sectional view illustrating an assembling relationship between the inner panel and the linear actuator in the state of FIG.

FIG. 12 is an external perspective view for explaining a procedure for attaching the linear actuator shown in FIG. 1 to a vehicle body.

13 is a cross-sectional view illustrating an assembling relationship between the inner panel and the linear actuator in the state of FIG.

FIG. 14 is an external perspective view for explaining a procedure for attaching the linear actuator shown in FIG. 1 to a vehicle body.

FIG. 15 is an external perspective view illustrating a procedure for attaching the linear actuator shown in FIG. 1 to a vehicle body.

FIG. 16 is a plan view for explaining an assembling relationship with a fuel filler lid in the linear actuator shown in FIG. 1;

17 is a plan view illustrating an assembling relationship between the linear actuator shown in FIG. 1 and a fuel filler lid.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Linear actuator 2 (Case) Lower case 3 (Case) Upper case 4 Motor 4c Armature shaft 5 Worm shaft 6 Sector 6e Sector shaft 7 Return spring 8 Output rod 8e0 (Sector shaft connection / sector shaft empty swing hole) Sector shaft insertion hole 20 Empty swing mechanism 50 Fuel filler lid C (first stationary position) lock-on position D (second stationary position) lock-off position

Continued on front page F term (reference) 2E250 AA21 HH02 KK02 LL13 PP03 QQ01 RR13 RR33 RR44 3J009 DA17 DA18 EA06 EA19 EA32 EB01 FA03

Claims (2)

[Claims] 1. A case, a motor housed in the case and having an armature shaft that is rotated by energization, a worm shaft coupled to the armature shaft of the motor, and the motor is rotatably supported by the case. A sector meshed with the worm shaft and rotated by the rotation of the worm shaft; and a penetrating through the case, both ends protruding from the case, supported by the case, and connected to the sector. An output rod that is linearly driven from a first stationary position to a second stationary position; a return spring that urges the output rod to the first stationary position; A moving mechanism for preventing the sector from rotating due to an external force when the sector is moved from the stationary position to the second stationary position. Near actuator. 2. A swing mechanism for connecting a sector shaft formed in a sector and a sector shaft having a length greater than the outer diameter of the sector shaft of the sector in the axial direction of the output rod. 2. The linear actuator according to claim 1, comprising a hole for swinging a sector axis.