JP3124747B2 - Electric actuator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric actuator for projecting or retracting an output shaft within a certain range.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG.
Is provided with a lock locking device 102 inside the door 101. The lock device 102 is a door 10
When 1 is closed, the door 101 is locked so as not to open.
This state corresponds to the knob 1 provided on the inner panel of the door 101.
When the user operates the keypad 03, the lock / lock device 102 operates to open the door 101, so that the door 101 is unlocked.

Further, a lock mechanism is provided so that the lock device 102 is not operated even when the knob 103 is operated. A knob 106 is connected to an operation lever 105 connected to the lock mechanism. Therefore, Knop 10
By raising or lowering 6, the lock mechanism in the lock locking device 102 operates via the connecting lever 105. When the knob 106 is lowered, the lock locking device 102 does not operate even when the knob 103 is operated, so that a lock state in which the door 101 is not opened can be obtained.

Further, an electric actuator 107 is disposed inside the door 101. The electric actuator 107 is connected to the connecting lever 105 of the lock / lock device 102. As shown in FIG. 41, the electric actuator 107 is provided with an ECU 108 mounted on the vehicle 100.
Is electrically connected to Further, an operation switch 109 provided inside the door 101 and a vehicle speed sensor 110 for detecting a vehicle speed of the vehicle 100 are electrically connected to the ECU 108.

In the unlocked state in which the lock device 102 operates by operating the knob 103, the vehicle 1
00 travels, and the vehicle speed sensor 110
Is detected, the ECU 108 operates the electric actuator 107 based on the detection signal. Then, the lock mechanism inside the lock locking device 102 operates via the connecting lever 105. At this time, the connecting lever 105 pulls down the nop 106. Therefore, even if the knob 103 is operated, the lock / lock device 102 does not operate.
1 is in a locked state where it cannot be opened.

In this locked state, the operation switch 1
09 is unlocked by the ECU 10 based on the operation.
8 operates the electric actuator 107. Then
The lock mechanism inside the lock locking device 102 operates via the connection lever 105. At this time, the connecting lever 105 pulls up the nip 106. Therefore, when the knob 103 is operated, the lock / lock device 102 is operated to enter an unlocked state in which the door 101 can be opened.

Further, when the operation switch 109 is locked in the unlocked state, the ECU operates based on the operation.
108 operates the electric actuator 107. Then, the lock device inside the lock locking device 102 operates via the connecting lever 105. For this reason, the lock mechanism inside the lock locking device 102 is forcibly operated regardless of the vehicle speed, and the lock state is set so that the door 101 is not opened even if the knob 103 is operated.

Further, the lock mechanism inside the lock locking device 102 can be operated via the connecting lever 105 by pulling up or pulling down the notch 106. Therefore, the door can be locked or unlocked by manual operation.

The electric actuator 10 for locking or unlocking the lock device 102
No. 7 is disclosed in Japanese Patent Publication No. 3-25590.

In this electric actuator, when the driving motor drives the rotating plate to rotate clockwise, the cam follower of the cam driven lever slides along the cam groove of the rotating plate. When the cam follower is positioned at the lock position abutting portion of the cam groove, the rotation of the rotating plate is restricted, and the lock device is operated by the cam follower lever to lock the door.

Conversely, when the drive motor drives and the rotary plate rotates counterclockwise, the cam follower of the cam driven lever slides along the cam groove of the rotary plate. When the cam follower is positioned at the unlock position abutting portion of the cam groove, the rotation of the rotating plate is restricted, and the lock device is operated by the cam follower lever to put the door in the unlocked state.

[0012]

However, the cam follower lever is provided with one cam follower. This one
The cam followers slide along the cam grooves by the rotation of the rotary plate. Therefore, when the cam follower is located at the lock position abutting portion or the unlock position abutting portion of the cam groove, one cam follower collides with the cam groove. In addition, since one cam follower always slides with respect to the cam groove, the cam follower is worn. Further, since the cam follower has a cylindrical shape, when the cam slider comes into contact with the lock or unlock position abutting portion, it comes into line contact. Therefore, since a shock is always applied to a part of the cam follower, there is a problem that the durability of the cam follower is reduced.

Further, there is a problem that the number of parts for constituting the electric actuator is large and assembly is very troublesome. Furthermore, when performing a manual operation, an operating force is applied to the engagement protrusion of the lock lever by a fork member connected to the knop. At this time, the cam follower rotates via the intermediate lever, but the cam follower moves linearly between the unlock position contact portion and the lock position contact portion along the communication groove. However, if the cam follower is not disposed in the connecting groove between the unlocking position abutting portion and the locking position abutting portion where the cam follower can move linearly, the lock locking device cannot be manually operated by manual operation of the knop. There's a problem.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and has as its object to reduce the number of parts to facilitate assembly, to improve the durability of an electric actuator, and to perform manual operation. An object of the present invention is to provide an electric actuator that can reliably operate a lock locking device.

[0015]

SUMMARY OF THE INVENTION To solve the above-mentioned problems, the invention according to the first aspect of the present invention is directed to a method in which a drive motor rotates the motor in a forward or reverse direction.
Rotating member, and inserted through the center of rotation of the rotating member
A cylindrical support member, provided on the inner peripheral surface of the support member
First and second moving guide members, which are inserted through the support member;
An output shaft that projects or immerses from the case body in the
The first or second movement guide portion provided on the output shaft;
Spiral guide with a guide surface to guide the material
The guide member is provided with both ends in the circumferential direction of the output shaft.
At one end of the guide member, a first movement guide
A first restricting unit that restricts the rotational movement of the member by contacting the member.
At the other end of the guide member,
A second rule that abuts the guide member and regulates its rotational movement.
A control part, wherein the output shaft and the main body case are provided with the output shaft.
The first movement is provided by regulating means for regulating the protrusion or immersion of the
The output shaft protrudes and retracts with the guide member in contact with the first restricting part
When operated, the second movement guide member and the second regulating portion
The second moving guide member abuts the second regulating portion without interference.
The first movement guide when the output shaft is moved
To prevent the member from interfering with the first restricting portion, the first and second
Position of the moving guide member in the direction of the inner peripheral surface of the support member.
The gist is that it is provided in the device.

[0016]

[0017]

[0018]

According to the first aspect of the present invention, the drive motor
A rotating member, a supporting member, and a first member provided on the supporting member.
And the second movement guide member rotates in one direction. Then,
The two moving guide members have a spiral shape provided on the output shaft.
The guide member is guided along the second guide surface. So
Therefore, the output shaft performs the protruding operation and protrudes by the regulating means.
When the operation is regulated and the output shaft completes the projecting operation, the first
Of the rotating member is brought into contact with the first regulating portion.
Rolling is regulated. In this state, move the output shaft
Also, the second movement guide member does not interfere with the second regulating portion. Ma
A rotating member, a supporting member, and a supporting member by a driving motor;
The first and second moving guide members provided on the
Turn over. Then, the first movement guide member is provided on the output shaft.
Along the first guide surface of the guide member having a spiral shape.
I will be guided. Therefore, the output shaft performs an immersive operation,
Immersion operation is regulated by regulating means and output shaft is immersed
Is completed, the second movement guide member contacts the second regulating portion.
The rotation of the rotating member is restricted by the contact. In this state, output
Even if the shaft is protruded, the first movement guide member is in the first regulation.
Do not interfere with the department.

[0019]

[0020]

[0021]

[0022]

[0023]

[0024]

【Example】

[First Embodiment] A first embodiment in which the present invention is embodied in an electric actuator for operating a lock device for locking a door of a vehicle will be described below with reference to FIGS.

As shown in FIG. 1, the electric actuator 1
The main body case 2 is formed in a rectangular box shape by a resin, and a pedestal portion 3 is formed to project from the bottom surface of the main body case 2. A drive motor 5 is attached and fixed to the pedestal portion 3 so that the rotation shaft 4 faces upward. A drive gear 6 made of resin is attached and fixed to the tip of the rotating shaft 4.

A cylindrical portion 8 is integrally formed on a side surface of the main body case 2 on the right side of the pedestal portion 3 with a connecting portion 7 interposed therebetween.
The lower end of an output shaft 9 made of resin is inserted into the tubular portion 8, and the output shaft 9 is supported by the tubular portion 8 so as to protrude or retract vertically. The tip of the output shaft 9 projects outside through an insertion hole 10 formed on the upper surface of the main body case 2.

One end of an operation lever 12 made of resin is connected to the tip of the output shaft 9 via a connection pin 11. or,
The other end of the operation lever 12 is connected to a lock locking device 14 via a connection shaft 13. Therefore, the operating lever 12 is rotated about the connecting shaft 13 by projecting the output shaft 9 from the main body case 2 or immersing the output shaft 9 in the main body case 2.

When the operating lever 12 is rotated above the horizontal line L with reference to the center of the connecting shaft 13 and the knob 103 of the related art is operated, the lock / lock device 14 operates to open the door 101. Can be unlocked. Further, the operation lever 12 is connected to a horizontal line L based on the center of the connection shaft 13.
When the knob 103 is operated further downward, even if the knob 103 is operated, the lock / lock device 14 does not operate, and a lock state in which the door 101 cannot be opened can be provided.

When the operating lever 12 moves above the horizontal line L with reference to the center of the connecting shaft 13, the output shaft 9 and the operating lever 12 are actuated by the urging force of a spring (not shown) provided in the lock / lock device 14. It moves to the position shown by the solid line. At this time, the knob 103
Is operated, the lock / lock device 14 operates and the door 101 is operated.
It is in an unlocked state where the user can open the door.

Conversely, when the operating lever 12 moves below the horizontal line L with reference to the center of the connecting shaft 13, the output shaft 9 and the operating lever 12 are actuated by the urging force of a spring (not shown) provided in the lock locking device 14. Moves to the position indicated by the two-dot chain line. At this time, even if the knob 103 is operated, the lock locking device 14 does not operate, and the door 101 is in a locked state in which the door 101 cannot be opened.

The operating lever 12 is connected with a knob 26 provided on the door 101 via an operating rod 25. By raising or lowering the knop 26, the operation lever 12 is turned to rotate the lock locking device 1.
4 can be operated to manually set the locked or unlocked state of the door 101.

As shown in FIG. 7, guide pins 15 and 16 as first and second guide members made of metal are fitted on the outer peripheral surface of the output shaft 9. As shown in FIG. 8, the guide pins 15 and 16 have an oval shape, and arc-shaped sliding portions 17a and 17b are formed on upper and lower portions, and linear contact surfaces 18a and 18b are formed on both left and right sides. Are formed.

A rotary gear 19 as a resin rotary member is meshed with the drive gear 6. This rotating gear 19
A resin-made guide member 20 having a cylindrical shape is attached and fixed to the center of rotation, and the output shaft 9 is inserted through the guide member 20.

As shown in FIG. 6, a spiral (first) guide surface 21a is formed on the upper surface side of the guide member 20. Further, a spiral (second) guide surface 21b is formed on the lower surface side of the guide member 20. A flat surface 22a is formed on the guide surface 21a.
A flat surface 22b is formed on 1b. An immersion position restricting portion 23a is formed at the end of the flat surface 22a. Similarly, a protruding position regulating portion 23b is formed at the end of the flat surface 22b.

As shown in FIG. 1, the sliding portion 17a of the guide pin 16 on the output shaft 9 contacts the flat portion 22b, and the contact surface 18a of the guide pin 16 contacts the protruding position regulating portion 23b. Then, the protrusion of the output shaft 9 is restricted. At this time, the sliding portion 1 of the guide pin 15
A gap S is formed between 7b and the upper end of the guide member 20 to absorb an assembly error.

In this state, when the rotation gear 19 and the guide member 20 are rotated clockwise by the driving of the drive motor 5, as shown in FIG.
Is adapted to slide along the guide surface 21b via the flat portion 22b. Then, the output shaft 9 is connected to the main body case 2
Immerse yourself in. When the operation lever 12 is not positioned below the horizontal line L, the guide pin 15 does not slide with respect to the guide member 20 due to the gap S.

When the operating lever 12 is positioned below the horizontal line L, the output shaft 9 is pressed downward by the urging force of a spring (not shown) in the lock locking device 14, so that the sliding portion 17b of the guide pin 15 is guided. The upper end of the member 20 is slid in contact with the upper end. Then, the guide pin 16 is separated from the lower end of the guide member 20, and a gap S is formed.

As shown in FIG. 3, when the contact surface 18b of the guide pin 15 comes into contact with the immersion position regulating portion 23a of the guide member 20, the immersion of the output shaft 9 is regulated and the rotation gear 19 is rotated. The rotation is restricted, and at this time, the drive of the drive motor 5 is stopped.

Therefore, the output shaft 9 is immersed in the main body case 2, the operation lever 12 is stopped at the position shown by the two-dot chain line, the lock mechanism in the lock locking device 14 is operated, and the knob 103 is operated. Is locked so that the door 101 is not opened.

When the rotary gear and the guide member 20 rotate counterclockwise from the state shown in FIG. 3 by the drive of the drive motor 5, the sliding portion 17b of the guide pin 15 becomes flat as shown in FIG. It slides along the guide surface 21a via 22a. Then, the output shaft 9 protrudes from the main body case 2, and when the operation lever 12 is not positioned above the horizontal line L, the guide pin 1 is separated by the gap S.
Numeral 6 does not slide with respect to the guide member 20.

When the operating lever 12 is positioned above the horizontal line L, the output shaft 9 is pressed upward by the urging force of a spring (not shown) in the lock locking device 14, so that the sliding portion 17a of the guide pin 16 is guided. The sliding member comes into contact with the lower end of the member 20. Then, the guide pin 15 is separated from the upper end of the guide member 20, and a gap S is formed.

As shown in FIG. 1, when the contact surface 18a of the guide pin 16 comes into contact with the projecting position regulating portion 23b of the guide member 20, the projection of the output shaft 9 is regulated and the rotation gear 19 is rotated. The rotation is restricted, and at this time, the drive of the drive motor 5 is stopped.

For this reason, the output shaft 9 protrudes from the main body case 2, the operation lever 12 stops at the position shown by the solid line, and the lock mechanism in the lock locking device 14 is operated.
When the user operates the button 3, the door 101 is unlocked.

Further, in the lock / lock device 14, the operating lever 12 is rotated about the connecting shaft 13 by manual operation of a knob 26 provided inside the door 101, and the output shaft 9 projects or retracts. Therefore, the locked or unlocked state of the door 101 can be set arbitrarily.

At this time, the guide pins 15, 1 of the output shaft 9
6 does not interfere with the guide member 20,
The manual operation of the nap 26 can be performed.

Next, the operation of the electric actuator 1 configured as described above will be described. First, in the state shown in FIG. 1, since the operation lever 12 is positioned above the horizontal line L, the output shaft 9 is pressed upward by the urging force of a spring (not shown) in the lock locking device 14. . Further, since the output shaft 9 is urged upward, the sliding portion 17a of the guide pin 16 has a flat surface 22b.
Is in contact with Further, the contact surface 18a of the guide pin 16 is in contact with the protrusion position regulating portion 23b of the guide member 20. In this state, the door 101 is unlocked by operating the knob 103.

In this state, when the rotation gear 19 and the guide member 20 are rotated clockwise by the drive of the drive motor 5, as shown in FIG.
Slides along the guide surface 21b via the flat portion 22b. Then, the output shaft 9 is immersed in the main body case 2. The guide pin 15 does not contact the upper surface of the guide member 20 before the operation lever 12 is located below the horizontal line L.

When the operating lever 12 is located below the horizontal line L, the output shaft 9 is pressed downward by the urging force of a spring (not shown) in the lock locking device 14. Then, the sliding portion 17b of the guide pin 15 contacts and slides on the upper surface of the guide member 20, and the guide pin 16 separates from the lower surface of the guide member 20 to form a gap S.

Further, when the rotating gear 19 and the guide member 20 rotate clockwise, as shown in FIG.
5, the sliding portion 17b slides on the flat portion 22a, and the contact surface 18b of the guide pin 15 contacts the immersion position regulating portion 23a of the guide member 20. Then, the output shaft 9 is controlled so as not to enter the inside of the main body case 2, and the rotation of the rotating gear 19 is restricted. At this time, the drive of the drive motor 5 stops.

Therefore, the operation lever 12 stops at the position indicated by the two-dot chain line, and the lock mechanism of the lock locking device 14 is operated. Even if the knob 103 is operated in this state, the door 1
01 is locked.

When the rotation gear 19 and the guide member 20 rotate counterclockwise from the state shown in FIG. 3 by the driving of the drive motor 5, the sliding portion 17b of the guide pin 15 becomes flat as shown in FIG. It slides along the guide surface 21a via the part 22a. Then, the output shaft 9 protrudes from the main body case 2. The guide pin 16 does not contact the lower surface of the guide member 20 before the operation lever 12 is located above the horizontal line L.

When the operation lever 12 is located above the horizontal line L, the output shaft 9 is pulled upward by the urging force of a spring (not shown) in the lock locking device 14. Then, the sliding portion 17a of the guide pin 16 contacts and slides on the lower surface of the guide member 20, and the guide pin 15 separates from the upper surface of the guide member 20 to form a gap S.

Further, when the rotating gear 19 and the guide member 20 rotate counterclockwise, the sliding portion 17a of the guide pin 16 slides on the flat portion 22b as shown in FIG. The contact surface 18a comes into contact with the protrusion position regulating portion 23b of the guide member 20. Then, the output shaft 9 is prevented from protruding from the main body case 2 and the rotation gear 19
Rotation is regulated. At this time, the drive of the drive motor 5 stops.

Therefore, the operation lever 12 stops at the position shown by the solid line, and the lock mechanism of the lock locking device 14 is operated. By operating the knob 103 in this state, the door 101
It will be in an unlocked state where you can open.

Therefore, when the rotation gear 19 and the guide member 20 rotate in the forward and reverse directions by the drive of the drive motor 5, only one of the guide pins 15 and 16 causes the guide member 20 to rotate.
Abuts or slides against

The guide pin 15 regulates the immersion of the output shaft 9, and the guide pin 16 regulates the protrusion of the output shaft 9. As a result, when the protrusion or the immersion of the output shaft 9 is restricted, the output shaft 9 is controlled by the pair of guide pins 15 and 16, so that the load on the guide pins 15 and 16 is reduced to half of the conventional one. It can be twice or more than conventional actuators. Therefore, the durability can be improved as compared with the conventional electric actuator.

Further, since the guide pins 15 and 16 are formed in an oval shape, the guide pins 15 and 16
When sliding with respect to the upper surface or the lower surface of the guide member, line contact is made, and the sliding of the guide pins 15, 16 with respect to the guide member 20 can be performed smoothly. Also, guide pin 1
When the guide pins 5 and 16 come into contact with the immersion position restricting portion 23a or the projecting position restricting portion 23b of the guide member 20, the guide pins 15,
Since the contact surfaces 18a and 18b of the 16 contact and come into contact with each other, the impact given to the guide pins 15 and 16 can be reduced.

As shown in FIG. 1, when the electric actuator 1 and the lock / locking device 14 are connected to each other and attached to a door, the lock / lock device 14 normally unlocks the door and the electric actuator 1 The output shaft 9 is assembled with the output shaft 9 protruding from 1. At this time, the electric actuator 1 is configured so that there is no gap S between the guide pin 15 and the guide member 20. In this state, if the output shaft 9 is lowered due to an assembly error, the guide pin 15 and the guide member 20 Interferes with the immersion position restricting portion 23a, so that the rotation gear 19 and the guide member 20 cannot be rotated.

However, in the first embodiment, the output shaft 9
Is slightly lowered, the gap S is formed. Therefore, the size of the gap S is slightly reduced, and the electric actuator 1 cannot operate due to an assembly error. Can be reliably prevented.

Further, in the first embodiment, the rotating gear 1
Although the guide member 20 is provided separately from the guide member 9, they may be integrally formed. Further, in order to reduce the weight of the electric actuator 1, the main body case 2, the drive gear 6, the output shaft 9, the rotary gear 19 and the guide member 20 are made of resin, but may be made of metal if necessary. It is possible.

Further, it is also possible to adjust the amount of protrusion or immersion of the output shaft 9 by adjusting the lead angle of the guide surfaces 21a and 21b formed on the guide member 20. Second Embodiment Next, a second embodiment of the present invention will be described with reference to FIGS.
6 will be described. The same members as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.

As shown in FIG. 9, the electric actuator 1
A support projection 31 is formed on the left side surface of the support projection 3.
A drive motor 5 is fixedly mounted on the motor 1 so that the rotating shaft 4 faces downward. A drive gear 6 made of resin is fixed to the rotating shaft 4.

A resin rotary shaft 32 is disposed on the right side of the drive motor 5, and is rotatably supported by bearings 33a and 33b integrally formed on the upper and lower portions of the main body case 2. A rotating gear 19 made of resin is integrally formed at the lower end of the rotating shaft 32.
Is engaged.

Further, on the right side of the rotary shaft 32, a resin-made output shaft 9 having a flat plate shape is disposed, and the tip of the output shaft 9 projects outside through the insertion hole 10 of the main body case 2. ing. The output shaft 9 protruding to the outside of the main body case 2 is connected to a lock locking device 14 via an operation lever 12 as in the first embodiment.

As shown in FIG. 16, a pair of guide pins 15 and 16 are integrally formed on the side surface of the output shaft 9 facing the rotation shaft 32. Arc-shaped sliding portions 17a, 17b are formed on the upper and lower portions of the guide pins 15, 16, respectively.
A flat contact surface 1 is provided on the left and right side surfaces of the guide pins 15 and 16.
8a and 18b are formed.

The guide member 20 is integrally formed substantially at the center of the rotating shaft 32. A guide surface 21a having a spiral shape is formed on the upper surface side of the guide member 20. A spiral guide surface 21 is provided on the lower surface side of the guide member 20.
b is formed. The guide surface 21a has a flat surface 2
2a is formed, and a flat surface 22 is formed at the end of the guide surface 21b.
b is formed. An immersion position restricting portion 23a is formed at the end of the flat surface 22a. Similarly, a protruding position regulating portion 23b is formed at the end of the flat surface 22b.

The guide pin 15 on the output shaft 9
When the sliding portion 17b of the output shaft 9 abuts on the flat surface 22a and the abutment surface 18b of the guide pin 15 abuts on the immersion position regulating portion 23a, the immersion of the output shaft 9 is regulated. At this time, the sliding portion 17a of the guide pin 16 and the guide member 20
A gap S for absorbing an assembly error is formed between the upper end and the upper end.

As shown in FIG. 9 and FIG.
5 is in contact with the immersion position regulating portion 23a and the sliding portion 17b of the guide pin 15 is in contact with the flat surface 22a. is there. At this time, even if the knob 103 is operated, the lock / lock device 14 does not operate. Therefore, the door 101 is in a locked state in which it cannot be opened.

In this state, when the rotation gear 19, the rotation shaft 32 and the guide member 20 are rotated clockwise by the drive of the drive motor 5, the sliding portion 17b of the guide pin 15 is flattened as shown in FIG. Through the guide surface 21a. At this time, the output shaft 9
Project from the main body case 2. When the operation lever 12 does not cross the horizontal line L upward, the guide pin 16 does not slide with the guide member 20 and the gap S
Keep away.

When the operation lever 12 is positioned above the horizontal line L, the output shaft 9 is urged upward by the urging force of a spring (not shown) in the lock / lock device 14, so that the guide pin 15 is moved to the guide member 20. The guide pin 16 slides in contact with the guide member 20.

Further, when the guide member 20 rotates clockwise, as shown in FIG.
a comes into contact with the flat surface 22b, and the contact surface 18a comes into contact with the protrusion position regulating portion 23b. Then, the projection of the output shaft 9 is restricted and the rotation of the rotating shaft 32 is restricted. Therefore, the operation lever 12 moves to the position shown by the two-dot chain line in FIG. Accordingly, by operating the knob 103, the lock / lock device 14 is operated to enter an unlocked state in which the door can be opened. At this time, the drive of the drive motor 5 is stopped.

When the rotation gear 19, the rotation shaft 32 and the guide member 20 are rotated counterclockwise from the state shown in FIG. 12 by the drive of the drive motor 5, as shown in FIG. Slides along the guide surface 21b via the flat surface 22b. At this time, the output shaft 9 is immersed in the main body case 2. When the operating lever 12 does not cross the horizontal line L downward, the guide pin 15 does not slide with the guide member 20 and is separated while maintaining the gap S.

When the operating lever 12 is positioned below the horizontal line L, the output shaft 9 is urged downward by the urging force of a spring (not shown) in the lock / lock device 14, so that the guide pin 16 is moved to the guide member 20. And the guide pin 15 is slid in contact with the guide member 20.

Thereafter, as shown in FIGS. 9 and 10, the sliding portion 17b of the guide pin 15 comes into contact with the flat surface 22a, and the contact surface 18a of the guide pin 15 comes into contact with the immersion position regulating portion 23a.
, The immersion of the output shaft 9 is regulated,
The rotation of the rotating shaft 32 is restricted. Therefore, the operation lever 12 moves to the position shown by the solid line. Therefore, knob 1
Even if the user operates 03, the lock / lock device 14 does not operate, and the door 101 is in a locked state in which the door 101 cannot be opened. still,
At this time, the drive of the drive motor 5 is stopped.

Next, the operation of the electric actuator 1 configured as described above will be described. 9 and 10, the contact surface 18b of the guide pin 15 contacts the immersion position restricting portion 23a, and the sliding portion 17b contacts the flat surface 22a, thereby restricting the output shaft 9 from entering. Have been. Therefore, even if the knob 103 is operated, the lock / lock device 14 does not operate, and the door 101 is in an unlocked state in which the door 101 cannot be opened.

From this state, when the rotation gear 19, the rotation shaft 32 and the guide member 20 are rotated clockwise by the drive of the drive motor 5, as shown in FIG.
The sliding portion 17b of the guide surface 21 is guided by the guide surface 21 via the flat surface 22a.
slides along a. At this time, the output shaft 9 protrudes from the main body case 2. When the operating lever 12 does not cross the horizontal line L upward, the guide pin 16 does not slide with the guide member 20 and is separated while maintaining the gap S.

When the operation lever 12 is positioned above the horizontal line L, the output shaft 9 is urged upward by the urging force of a spring (not shown) in the lock / lock device 14, so that the guide pin 15 is moved to the guide member 20. And the guide pin 16 slides along the lower end of the guide member 20.

Further, when the guide member 20 rotates clockwise, as shown in FIG.
a comes into contact with the flat surface 22b, and the contact surface 18a comes into contact with the protrusion position regulating portion 23b. Then, the projection of the output shaft 9 is restricted and the rotation of the rotating shaft 32 is restricted. Therefore, the operation lever 12 moves to the position indicated by the two-dot chain line. Therefore, when the knob 103 is operated, the lock locking device 1
4 operates to enter an unlocked state in which the door 101 can be opened. At this time, the drive of the drive motor 5 stops.

When the rotation gear 19, the rotation shaft 32 and the guide member 20 are rotated counterclockwise from the state shown in FIG. 12 by the drive of the drive motor 5, as shown in FIG. Slides along the guide surface 21b via the flat surface 22b. At this time, the output shaft 9 sinks into the main body case 2. Also, when the operation lever 12 has the horizontal line L
Is not downward, the guide pin 15 does not slide with the guide member 20 and is separated while maintaining the gap S.

When the operating lever 12 is positioned below the horizontal line L, the output shaft 9 is urged downward by the urging force of a spring (not shown) in the lock / lock device 14, so that the guide pin 16 is moved to the guide member 20. And the guide pin 15 slides along the guide member 20.

Then, as shown in FIGS. 9 and 10, the sliding portion 17b of the guide pin 15 contacts the flat surface 22a, and the contact surface 18b of the guide pin 15 contacts the immersion position regulating portion 23a.
Abut. Then, the immersion of the output shaft 9 is regulated and the rotation of the rotating shaft 32 is regulated. Therefore, the operation lever 12 moves to the position shown by the solid line. Therefore, even if the knob 103 is operated, the lock / lock device 14 does not operate,
The door 101 is locked so that the door 101 cannot be opened.
At this time, the drive of the drive motor 5 stops.

In the present embodiment, a guide member 20 is formed on a rotating shaft 9 which is rotated by the drive of the drive motor 5, and guide pins 15, 16 of the output shaft 9 are formed on the guide member 20.
The output shaft 9 is made to protrude or sink by sliding the.

Accordingly, when the rotation gear 19 and the guide member 20 rotate in the forward and reverse directions by the drive of the drive motor 5, only one of the guide pins 15 and 16 is moved to the guide member 20.
Abuts or slides against The guide pin 15 regulates the immersion of the output shaft 9.
It is the guide pin 16 that regulates the projection of the guide.

As a result, similarly to the first embodiment, the output shaft 9
When restricting the protrusion or immersion of a pair of guide pins 15,
Since the operation is performed by the guide pin 16, the burden on the guide pins 15 and 16 is reduced to half of that of the conventional actuator, so that the service life of the guide pins 15 and 16 can be doubled or longer than the conventional actuator. Therefore, the durability can be improved as compared with the conventional electric actuator.

Further, in the second embodiment, the guide pins 15 and 16 can be formed integrally with the output shaft 9. As a result, the guide pins 15 and 16 can be configured to sufficiently withstand an impact force when the guide pins 15 and 16 collide with the immersion position restricting portion 23a and the projecting position restricting portion 23b.

Also, similarly to the first embodiment, the guide pin 1
The guide pins 1 and 5 are formed in an oval shape.
When the guide pins 5 and 16 are sliding with respect to the upper surface or the lower surface of the guide member 20, line contact is made, and the guide pins 15 and 16 can slide smoothly with respect to the guide member 20. Further, when the guide pins 15 and 16 abut on the immersion position restricting portion 23a or the protruding position restricting portion 23b of the guide member 20, the contact surfaces 18a and 18b of the guide pins 15 and 16 come into contact with each other and come into contact. In addition, the impact applied to the guide pins 15 and 16 can be reduced.

As shown in FIG. 9, when the electric actuator 1 and the lock / locking device 14 are connected to each other and attached to a door, the lock / lock device 14 normally unlocks the door and the electric actuator 1 is unlocked. The output shaft 9 is assembled with the output shaft 9 protruding from 1. At this time, the electric actuator 1 is configured so that there is no gap S between the guide pin 15 and the guide member 20. In this state, if the output shaft 9 is lowered due to an assembly error, the guide pin 15 and the guide member 20 Interferes with the immersion position restricting portion 23a, so that the rotation gear 19 and the guide member 20 cannot be rotated.

However, in the second embodiment, the output shaft 9
Is slightly lowered, the gap S is formed. Therefore, the size of the gap S is slightly reduced, and the electric actuator 1 cannot operate due to an assembly error. Can be reliably prevented.

In order to reduce the weight of the electric actuator 1, the main body case 2, the drive gear 6, the output shaft 9, the guide pins 15, 16, the rotary gear 19 and the guide member 20 are made of resin. It is also possible to change to metal according to it.

Further, it is also possible to adjust the lead angle of the guide surfaces 21a, 21b formed on the guide member 20 to adjust the amount by which the output shaft 9 projects or retracts. Third Embodiment Next, a third embodiment of the present invention will be described with reference to FIGS. The same members as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.

As shown in FIGS. 17 and 23, the output shaft 9 made of resin is provided with the guide surfaces 21a and 21b, the flat portions 22a and 22b, the projecting position regulating portion 23a and the immersion position regulating portion 23b of the first embodiment. A guide member 20 made of resin as a formed guiding member is integrally formed. Incidentally, the tip of the output shaft 9 is connected to a lock locking device 14 via an operation lever 12 as in the first embodiment.

A lower support pipe 41 made of resin is integrally formed at the lower end of the rotary gear 19 made of resin.
An upper support pipe 42 made of resin is fitted into the upper end of the upper pipe. Then, the upper support pipe 42 and the lower support pipe 4
1 constitutes a support member 43. The guide member 20 of the output shaft 9 is inserted and arranged in the support member 43.

As shown in FIG. 18, guide pins 45 and 46 as first and second moving guide members are integrally formed on the inner peripheral surfaces of the upper and lower support pipes 42 and 41, respectively. An arc-shaped sliding portion 47a is formed below the guide pin 45 formed on the inner peripheral surface of the upper support pipe 42,
Linear contact surfaces 48 are provided on both left and right sides of the guide pin 45.
a, 48b are formed. Similarly, an arc-shaped sliding portion 47b is formed above a guide pin 46 formed on the inner peripheral surface of the lower support pipe 41, and linear contact surfaces 49a are formed on both left and right sides of the guide pin 46. , 49b are formed.

Then, as shown in FIG.
The sliding portion 47b of the guide pin 46 in 3 is the guide member 20.
And the contact surface 49 of the guide pin 46
When a is in contact with the immersion position restricting portion 23a, the projection of the output shaft 9 is restricted. At this time, a gap S is formed between the sliding portion 47a of the guide pin 45 and the upper end of the guide member 20 to absorb an assembly error.

As shown in FIGS. 17 and 19, the guide pins 4
6 is in a state where the output shaft 9 is sunk from the main body case 2 in a state where the contact surface 49a of the stub 6 is in contact with the immersion position regulating portion 23a and the sliding portion 47b of the guide pin 46 is in contact with the flat surface 22b. . At this time, the operation lever 12 is stopped at the position shown by the solid line, and even if the knob 103 is operated, the lock locking device 14 does not operate and the door 101 is in a locked state in which the door 101 cannot be opened.

In this state, when the rotation gear 19, the support member 43, and the guide pins 45 and 46 are rotated counterclockwise by the drive of the drive motor 5, as shown in FIG. Slides along the guide surface 21b via the flat surface 22b. At this time, the output shaft 9 projects from the main body case 2. When the operation lever 12 does not cross the horizontal line L upward, the guide pin 45 does not slide with the guide member 20 and is separated while maintaining the gap S.

When the operating lever 12 is positioned above the horizontal line L, the output shaft 9 is urged upward by the urging force of a spring (not shown) in the lock / lock device 14, so that the guide pin 46 is moved to the guide member 20. And the guide pin 45 slides along the guide member 20.

Further, when the guide member 20 rotates counterclockwise, as shown in FIG.
a comes into contact with the flat surface 22a, and the contact surface 48b comes into contact with the protrusion position regulating portion 23b. Then, the projection of the output shaft 9 is restricted, and the rotation of the rotating gear 19 is restricted. Therefore, the operation lever 12 moves to the position shown by the two-dot chain line. Therefore, by operating the knob 103, the lock locking device 14 is operated, and the door 101 is unlocked so that the door 101 can be opened. At this time, the drive of the drive motor 5 is stopped.

From the state shown in FIG. 21, the rotation gear 19, the support member 43 and the guide pin 4 are driven by the drive motor 5.
When the members 5 and 46 are rotated clockwise, as shown in FIG. 22, the sliding portion 47a of the guide pin 45 slides along the guide surface 21a via the flat surface 22a.
At this time, the output shaft 9 is immersed in the main body case 2. When the operating lever 12 does not cross the horizontal line L downward, the guide pin 46 does not slide with the guide member 20 and is separated while maintaining the gap S.

When the operating lever 12 is positioned below the horizontal line L, the output shaft 9 is urged downward by the urging force of a spring (not shown) in the lock / lock device 14, so that the guide pin 45 is moved to the guide member 20. The guide pin 46 slides along the guide member 20. Thereafter, as shown in FIGS. 17 and 19, the sliding portion 47b of the guide pin 46 comes into contact with the flat surface 22b, and the contact surface 49a of the guide pin 46 comes into contact with the immersion position regulating portion 2.
When the output shaft 9 abuts on the shaft 3a, the immersion of the output shaft 9 is restricted and the rotation of the rotary gear 19 is restricted. Therefore, the operation lever 12 is moved to the position indicated by the solid line. Therefore, even if the knob 103 is operated , the lock / lock device 14 does not operate,
The door 101 is locked so that the door 101 can not be opened.
At this time, the drive of the drive motor 5 is stopped.

Next, the operation of the electric actuator 1 configured as described above will be described. As shown in FIGS. 17 and 19, when the contact surface 49a of the guide pin 46 is in contact with the immersion position restricting portion 23a and the sliding portion 47b of the guide pin 46 is in contact with the flat surface 22b, the output is low. The shaft 9 is immersed in the main body case 2. At this time, knob 1
The lock device 14 is in a locked state where the door 101 cannot be opened even if the user operates the keypad 03.

In this state, when the rotation gear 19, the support member 43, and the guide pins 45, 46 are rotated counterclockwise by the drive of the drive motor 5, as shown in FIG. Slides along the guide surface 21b via the flat surface 22b. At this time, the output shaft 9 protrudes from the main body case 2. Also, when the operation lever 12 has the horizontal line L
Is not upward, the guide pin 45 does not slide with the guide member 20 and is separated while maintaining the gap S.

When the operation lever 12 is positioned above the horizontal line L, the output shaft 9 is urged upward by the urging force of a spring (not shown) in the lock / lock device 14, so that the guide pin 46 is moved to the guide member 20. And the guide pin 45 slides along the guide member 20.

Further, when the guide member 20 rotates counterclockwise, as shown in FIG.
a comes into contact with the flat surface 22a, and the contact surface 48b comes into contact with the protrusion position regulating portion 23b. Then, the projection of the output shaft 9 is restricted, and the rotation of the rotating gear 19 is restricted. Therefore, the operation lever 12 moves to the position shown by the two-dot chain line. Therefore, when the knob 103 is operated, the lock / lock device 14 operates to enter an unlocked state in which the door 101 can be opened. At this time, the drive of the drive motor 5 stops.

From the state shown in FIG. 21, the driving gear 5 drives the rotating gear 19, the support member 43 and the guide pin 4
When the members 5 and 46 are rotated clockwise, as shown in FIG. 22, the sliding portion 47a of the guide pin 45 slides along the guide surface 21a via the flat surface 22a. At this time, the output shaft 9 enters the main body case 2. When the operation lever 12 does not cross the horizontal line L downward, the guide pin 46
Are not slid with the guide member 20 and are separated while maintaining the gap S.

When the operating lever 12 is positioned below the horizontal line L, the output shaft 9 is urged downward by the urging force of a spring (not shown) in the lock / lock device 14, so that the guide pin 45 is moved to the guide member 20. And the guide pin 46 slides along the guide member 20.

Thereafter, as shown in FIGS. 17 and 19, when the sliding portion 47b of the guide pin 46 contacts the flat surface 22b and the contact surface 49a of the guide pin 46 contacts the immersion position regulating portion 23a. In addition, the immersion of the output shaft 9 is restricted and the rotation of the rotary gear 19 is restricted. Therefore, the operation lever 12 moves to the position shown by the solid line. Therefore, knob 10
3, the lock / lock device 14 does not operate and the door 1
01 is locked. At this time, the drive of the drive motor 5 stops.

Therefore, also in the third embodiment, when the rotation gear 19, the support member 43, and the guide pins 45, 46 are rotated in the forward and reverse directions by the drive of the drive motor 5, one of the guide pins 45, 46 is used. Only the guide member 20 abuts or slides on the guide member 20. The guide pin 46 regulates the immersion of the output shaft 9, and the guide pin 45 regulates the protrusion of the output shaft 9.

As a result, similarly to the first and second embodiments, when restricting the projection or retraction of the output shaft 9, the pair of guide pins 4
5 and 46, the load on the guide pins 45 and 46 is reduced to half of that of the conventional actuator, so that the life of the guide pins 45 and 46 can be doubled as compared with the conventional actuator.

Further, in the third embodiment, the guide pins 45, 46 are provided for the upper and lower support pipes 42, 41.
Can be integrally formed. As a result, guide pin 4
5 and 46 are immersion position restricting portions 23a and projecting position restricting portions 23.
It can be configured to sufficiently withstand the impact force when it collides with b. Therefore, the durability can be improved as compared with the conventional electric actuator.

Further, similarly to the first and second embodiments, the guide pins 4
5 and 46 are formed in an oval shape, so that the guide pins 45 and
When the sliding member 46 slides on the upper surface or the lower surface of the guide member 20, the line contact is made, and the sliding of the guide pins 45 and 46 with respect to the guide member 20 can be performed smoothly.

When the guide pins 45 and 46 come into contact with the immersion position restricting portion 23a or the projecting position restricting portion 23b of the guide member 20, the contact surfaces 48a and 48 of the guide pins 45 and 46 come into contact with each other.
Since b, 49a, and 49b come into contact with each other and come into contact with each other, the impact applied to the guide pins 45 and 46 can be reduced.

As shown in FIG. 17, when the electric actuator 1 and the lock / locking device 14 are connected to each other and attached to a door, the lock / lock device 14 normally unlocks the door and the electric actuator 1 The output shaft 9 is assembled with the output shaft 9 protruding from 1. At this time, the electric actuator 1 is configured such that there is no gap S between the guide pin 45 and the guide member 20. In this state, if the output shaft 9 is lowered due to an assembly error, the guide pin 45 and the guide member 20 The rotation gear 19 and the support member 43 cannot be rotated because they interfere with the immersion position restricting portion 23a of the first motor.

However, in the third embodiment, the output shaft 9
Is slightly lowered, the gap S is formed. Therefore, the size of the gap S is slightly reduced, and the electric actuator 1 cannot operate due to an assembly error. Can be reliably prevented.

In order to reduce the weight of the electric actuator 1, the main body case 2, the drive gear 6, the output shaft 9, the rotary gear 19, the support member 43, and the guide pins 45 and 46 are made of resin. It is also possible to change to metal according to it.

Furthermore, it is also possible to adjust the lead angle of the guide surfaces 21a and 21b formed on the guide member 20 to adjust the amount by which the output shaft 9 projects or retracts. [Fourth Embodiment] Next, a fourth embodiment of the present invention will be described with reference to FIGS. The same reference numerals are given to members common to the above-described embodiments, and detailed description thereof will be omitted.

As shown in FIG. 24, the resin-made main body case 2 in the shape of a rectangular box is constituted by overlapping two case portions 50 with each other. Therefore,
The pedestal portion 3, the connecting portion 7, the cylindrical portion 8, and the insertion hole 10 are also formed by overlapping the case portions 50.

As shown in FIG. 24 and FIG. 25, a rectangular stroke adjusting portion 51 is formed on the resin output shaft 9 projecting upward through the insertion hole 10. The stroke adjusting section 51 has a rectangular through hole 52 formed therein. Therefore, an immersion position restricting portion 53a is formed on the upper surface of the through hole 52, and a projecting position restricting portion 53b is formed on the lower surface of the through hole 52.

A regulating section 54 is integrally formed on the upper surface of the case section 50 so as to surround the periphery of the insertion hole 10. The restricting portions 54 are overlapped to form a restricting main body 55 having a square planar shape. Further, a slit 56 is formed in the restricting portion 54, and a stroke restricting piece 57 is formed between the slits 56. Further, the communication holes 58 are formed by overlapping the slits 56 with each other. The stroke adjusting section 51 is inserted through the insertion hole 58. Therefore, the stroke adjusting section 51 and the immersion position regulating section 5
3a, the protruding position restricting portion 53b, and the stroke restricting piece 57 constitute restricting means.

Therefore, when the output shaft 9 protrudes from the main body case 2 and the protrusion restricting portion 53b of the stroke adjusting portion 51 comes into contact with the stroke restricting piece 57, the protrusion of the output shaft 9 is restricted. Further, when the output shaft 9 is immersed in the main body case 2 and the immersion restricting portion 53a of the stroke adjusting portion 51 comes into contact with the stroke restricting piece 57, the immersion of the output shaft 9 is restricted.

Further, similarly to the above embodiment, the output shaft 9 is connected to the operating lever 12 of the lock / lock device 14 via the connecting pin 11.
It is connected to. Therefore, the output shaft 9 is made to protrude from the state where the output shaft 9 is immersed in the main body case 2. When the connecting pin 11 moves above the horizontal line L, the output shaft 9 is pulled up by the urging force of a spring (not shown) provided in the lock locking device 14. Further, the protrusion position restricting portion 53b of the stroke adjusting portion 51 abuts on the stroke restricting piece 57, and the protrusion of the output shaft 9 is restricted.

Conversely, the output shaft 9 is retracted from the state where the output shaft 9 protrudes from the main body case 2. When the connecting pin 11 moves below the horizontal line L, the output shaft 9 is pushed down by the urging force of a spring (not shown) provided in the lock locking device 14. Also, the immersion position regulating part 53a of the stroke adjusting part 51
Abuts against the stroke restricting piece 57 to restrict the immersion of the output shaft 9.

A guide member 20 as a guide member is integrally formed on the outer peripheral surface of the output shaft 9 in the main body case 2. The guide member 20 is formed in a spiral shape, and first and second guide surfaces 21 are provided on both upper and lower surfaces of the guide member 20.
a, 21b are formed. The second guide surface 21 b is formed so as to rise upward when the rotary gear 19 in the clockwise direction, so that the first guide surface 21 a is lowered when the rotary gear 19 counterclockwise downward Is formed.

The first and second guides are provided at both ends of the guide member 20.
Regulating surfaces 25a and 25b are formed as regulating portions. The regulating surfaces 25a and 25b of the guide member 20 are formed so as not to overlap each other in the axial direction of the output shaft 9. Therefore, the guide member 20 is formed so as not to make a round around the outer peripheral surface of the output shaft 9.

A rotating gear 19 made of resin is inserted through the output shaft 9 in the main body case 2. Support cylindrical portions 60a and 60b as cylindrical support members are integrally formed on both upper and lower surfaces at the rotation center of the rotary gear 19.
Guide pins 61a and 61b as first and second moving guide members are integrally formed on the inner peripheral surfaces of the support cylinder portions 60a and 60b, respectively. A guide member 20 is provided on one side of a guide pin 61a formed on the inner peripheral surface of the support cylinder 60a.
The contact surface 62a which comes into contact with the regulating surface 25a is formed. Further, a curved sliding portion 63a that slides on the first guide surface 21a is formed below the guide pin 61a.

On the other hand, on one side of the guide pin 61b formed on the inner peripheral surface of the support cylindrical portion 60a, a contact surface 62b which is in contact with the regulating surface 25b of the guide member 20 is formed.
The second guide surface 21b is provided on the upper portion of the guide pin 61b.
And a curved sliding portion 63b that slides.

Also, as shown in FIG.
a and the guide pin 61b are spaced apart from each other with a gap G in the circumferential direction of the support cylinders 60a and 60b.
This is because, for example, when the contact surface 62b of the guide pin 61b is in contact with the regulating surface 25b, the guide pin 61a
Are spaced apart from each other with a gap G in a direction away from the regulating surface 25a. Therefore, the guide pin 61a and the guide pin 61b are formed so as not to face each other in the axial direction of the output shaft 9.

When the drive motor 5 is driven to rotate the rotary gear 19 clockwise from the state shown in FIG. 24, the sliding portion 63b of the guide pin 61b initially moves the second guide surface 2b.
1b. When the rotary gear 19 rotates clockwise to some extent, the sliding portion 63b slides on the second guide surface 21b. When the guide pin 61b starts sliding with the sliding portion 63b, the output shaft 9 is made to protrude from the main body case 2 as shown in FIG.

When the connecting pin 11 of the output shaft 9 moves above the horizontal line L, the output shaft 9 is pulled upward by the urging force of a spring (not shown) in the lock locking device 14 as shown in FIG. At this time, the protrusion position restricting portion 53b abuts on the stroke restricting piece 57, so that the amount of protrusion of the output shaft 9 is restricted.

When the output shaft 9 projects, the sliding portion 63b of the guide pin 61b separates from the second guide surface 21b and does not slide. When the output shaft 9 performs the projecting operation, the guide member 20 is moved to a position where the contact surface 62a of the guide pin 61a can come into contact with the regulating surface 25a of the guide member 20. From this state, the rotating gear 19 further rotates clockwise, and the contact surface 62a of the guide pin 61a is moved to the regulating surface 25a of the guide member 20.
, The rotation of the rotating gear 19 is regulated. At this time, the drive motor 5 stops and the rotation of the rotary gear 19 stops.

When the drive motor 5 is driven to rotate the rotary gear 19 in the counterclockwise direction from the state shown in FIG.
Is not slid on the guide surface 21a. Then, when the rotating gear 19 rotates counterclockwise to some extent,
The sliding portion 63a slides on the first guide surface 21a. When the guide pin 61a starts sliding with the sliding portion 63a, the output shaft 9 is sunk into the main body case 2 as shown in FIG. Then, when the connecting pin 11 of the output shaft 9 moves below the horizontal line L, the output shaft 9 is pushed down by the urging force of a spring (not shown) in the lock locking device 14 as shown in FIG. At this time, since the immersion position restricting portion 53a contacts the stroke restricting piece 57, the amount of immersion of the output shaft 9 is restricted.

When the output shaft 9 is retracted, the sliding portion 63a of the guide pin 61a is separated from the first guide surface 21a and does not slide. The guide member 20 is moved to a position where the contact surface 62b of the guide pin 61b can come into contact with the flat surface 21b of the guide member 20 by the immersion operation of the output shaft 9. From this state, the rotating gear 19 further rotates counterclockwise, and the contact surface 62b of the guide pin 61b is moved to the regulating surface 2 of the guide member 20b.
5b, the rotation of the rotating gear 19 is regulated.
At this time, the drive motor 5 stops and the rotation of the rotary gear 19 stops.

Next, the operation of the electric actuator 1 configured as described above will be described. First, in the state shown in FIG. 24, since the operation lever 12 is positioned below the horizontal line L, the output shaft 9 is pulled down by the urging force of a spring (not shown) in the lock locking device 14. . In this state, the immersion restricting portion 53a comes into contact with the stroke restricting piece 57 and
The amount of immersion is regulated. Further, the regulating surface 25b of the guide member 20 and the contact surface 62b of the guide pin 61b contact each other to regulate the rotation of the rotary gear 19 in the counterclockwise direction. At this time, even if the knob 103 of the door 101 is operated, the lock locking device 14 does not operate and the door 101 is in a locked state in which the door 101 cannot be opened.

When the knob 26 is pulled up, the operation lever 12 moves to the position shown by the two-dot chain line, and the output shaft 9 projects from the main body case 2. At this time, since the regulating surface 25a of the guide member 20 does not interfere with the guide pin 61a, the output shaft 9 can be reliably protruded. As a result, the locked state can be changed to the unlocked state by the manual operation of the knop 26.

When the rotary gear 19 rotates clockwise by the drive of the drive motor 5, the guide pins 61a, 6
1b also rotates clockwise. Due to this rotation, the sliding portion 63b of the guide pin 61b eventually becomes the second guide surface 21b.
Slides with. Then, as shown in FIG. 26, the guide pin 61b pushes up the guide member 20 to cause the output shaft 9 to protrude from the main body case 2.

When the connecting pin 11 moves above the horizontal line L, the operating lever 12 moves to the position shown by the solid line in FIG. At this time, the protrusion restricting portion 53b abuts on the stroke restricting piece 57 to restrict the protrusion of the output shaft 9.
In addition, the protrusion of the output shaft 9 causes the regulating surface 25 a
Moves upward, and the guide pin 61a
Is brought into a state where the contact surface 62a can contact the surface.

Eventually, the rotation of the rotating gear 19 causes the contact surface 62a of the guide pin 61a to come into contact with the regulating surface 25a to regulate the rotation of the rotating gear 19. At this time, the drive of the drive motor 5 stops and the rotation of the rotary gear 19 stops.

[0138] Therefore, since the door is in the unlocked state, if the knob 103 is operated, the lock / lock device 14 operates to open the door 101. Further, when the operating lever 12 is moved from the state shown in FIG. 27 to the solid line shown in FIG. for that reason,
Even if the knob 103 is operated, the locking device 14 does not operate, and the door 101 cannot be opened.

When the operation lever 12 moves to the solid line in FIG. 24, the output shaft 9 enters the main body case 2. At this time, the regulating surface 25b of the guide member 20 is
Since it does not interfere with b, it is possible to reliably push down the nop 26.

When the rotary gear 19 rotates counterclockwise by the drive of the drive motor 5 from the state shown in FIG. 27, the guide pins 61a and 61b also rotate counterclockwise. Due to this rotation, the sliding portion 63a of the guide pin 61a slides on the first guide surface 21a. Then, as shown in FIG. 28, the guide pin 61a pushes down the guide member 20 to cause the output shaft 9 to sink into the main body case 2.

When the connecting pin 11 moves below the horizontal line L, the operating lever 12 moves to the position shown by the solid line in FIG. At this time, the immersion restricting portion 53a comes into contact with the stroke restricting piece 57, and the immersion of the output shaft 9 is restricted.
Also, when the output shaft 9 is immersed, the regulating surface 25b
Moves downward, and the guide pin 61b
Is brought into a state where the contact surface 62b can contact the surface.

Eventually, the rotation of the rotating gear 19 causes the contact surface 62b of the guide pin 61b to come into contact with the regulating surface 25b, thereby regulating the rotation of the rotating gear 19. At this time, the drive of the drive motor 5 stops and the rotation of the rotary gear 19 stops.

Therefore, the knob 10 is locked.
3, the lock / lock device 14 does not operate and the door 1
01 cannot be opened. Here, as shown in FIG. 29, for example, after the contact surface 62b of the guide pin 61b comes into contact with the regulating surface 25b of the guide member 20, the rotating gear 19
Stops. At this time, as shown in FIG.
2b and the rotation gear 19 by the impact per surface between the regulating surface 25b.
Rotates slightly clockwise, and the contact surface 62b and the regulating surface 25b
Are slightly separated from each other. At this time, the guide pin 61a
Will also move clockwise by a small distance.

However, the guide pin 61a and the guide pin 6
1b and the supporting cylinder portions 60a, 60b so as to have a gap G.
Is formed. Therefore, even if the output shaft 9 is pulled upward from the state shown in FIG. 30, the guide pin 61a does not interfere with the guide member 20 on the side where the regulating surface 25a is formed.

In a state where the contact surface 62a of the guide pin 61a is slightly separated from the regulation surface 25a of the guide member 20, even if the output shaft 9 is pushed down, the guide pin 61b forms the regulation surface 25b for the same reason as described above. It does not interfere with the guide member 20 on the other side.

For this reason, the operating lever 1
2 can be operated and the output shaft 9 can be reliably raised or pushed down. As a result, the switching operation from the locked state to the unlocked state and from the unlocked state to the locked state can be reliably performed by the manual operation.

FIG. 33 shows the supporting cylinder portions 60a and 60a.
b is a development view of the guide pin 61b, for example, when the guide pin 61b is to be formed at a position indicated by a two-dot chain line.
Thus, an area A in which a and the guide pin 61b face each other is formed. In this case, the meat in the area A cannot be removed by forming a mold or the like. Therefore,
The meat in the area A must be cut off by post-processing.

However, in this embodiment, as shown by the solid line in FIG.
and b are formed on the inner peripheral surfaces of the support cylinders 60a and 60b with a gap G therebetween. In this case, since the guide pins 61a and 61b do not face each other, the guide pins 61a and 61b can be integrally formed on the inner peripheral surfaces of the support tubular portions 60a and 60b by a single die processing.

The point is that the contact surface 62a of the guide pin 61a and the contact surface 62b of the guide pin 61b form the support cylinder portion 60a.
What is necessary is just to be in the position deviated in the circumferential direction of 60b.
Further, since the guide member 20 is not formed so as to go around the output shaft 9, the guide member 20 can be formed integrally with the output shaft 9 by a single die working.

Therefore, also in the fourth embodiment, when the rotation gear 19, the support member 43, and the guide pins 61a and 61b rotate in the forward and reverse directions by the drive of the drive motor 5,
Only one of the guide pins 61a and 61b abuts or slides on the guide member 20. The clockwise rotation of the rotating gear 19 is restricted by the guide pin 6.
1a, and the guide pin 61b regulates the rotation of the rotating gear 19 in the counterclockwise direction. Therefore, when regulating the rotation of the rotating gear 19 that causes the output shaft 9 to protrude or sink, the rotation is performed by the pair of guide pins 61a and 61b. As a result, the load on the guide pins 61a and 61b is reduced to half of that of the conventional actuator, so that the life of the guide pins 61a and 61b can be doubled compared to that of the conventional actuator, and the durability can be improved.

Further, in the fourth embodiment, the guide pins 61a and 61b can be easily formed on the support members 60a and 60b by integrally forming the molds. As a result, the guide pins 60a, 60b move to the regulating surfaces 25a, 25b.
Can be configured so as to sufficiently withstand the impact force at the time of contact (collision). Therefore, the durability can be improved as compared with the conventional electric actuator.

The first and second guide surfaces 21a, 21a
sliding portion 63 of guide pins 61a and 61b sliding with
The a and 63b are curved. Therefore, the guide pins 61a and 61b are connected to the first and second guide surfaces 21a and 21b.
When sliding on b, line contact occurs, and the sliding can be performed smoothly.

Further, when the guide pins 61a, 61b come into contact with the regulating surfaces 25a, 25b of the guide member 20, the contact is a contact with the surface, so that the impact given to the guide pins 61a, 61b is dispersed to guide the guide pins 61a, 61b. , 61b can be avoided. To that extent, the durability of the guide pins 61a and 61b can be improved.

When the guide pin 61a is in contact with the regulating surface 25a or when the guide pin 61b is in contact with the regulating surface 25b, the guide pins 61a and 61b are connected to the first and second guide surfaces 21a and 21b. It is in a state separated from. When the rotation gear 19 rotates to some extent, the guide pins 61a and 61b come into contact with the first and second guide surfaces 21a and 21b.

Therefore, by assembling the output shaft 9 and the operation lever 12, it is possible to prevent the guide pin 61b from abutting on the flat surface 22a even if the output shaft 9 rises slightly, for example. 1 can be reliably prevented from becoming inoperable.

In order to reduce the weight of the electric actuator 1, the main body case 2, the rotating gear 6, the output shaft 9, the guide member 20, the rotating gear 19, the support cylinders 60a and 60b, and the guide pins 61a and 61b are made of resin. Although it is made of metal, it can be changed to metal if necessary. Further, the guide pins 61a and 61b may be configured separately so as to be fitted to the inner peripheral surfaces of the support cylinder portions 60a and 60b. Similarly, a separate structure in which the guide member 20 is attached and fixed to the output shaft 9 may be employed.

FIG. 34 shows a modification of the fourth embodiment, in which a guide member 20 as a guide member similar to that of the fourth embodiment is integrated inside a hollow resin output shaft 9. Is formed. A rotating shaft 70 made of resin is integrally formed on the upper surface at the center of rotation of the rotating gear 19. The upper end of the rotating shaft 70 is rotatably supported by the stroke regulating piece 57, and the lower end of the rotating gear 19 is connected to the connecting portion 7.
Is rotatably supported by the cylindrical portion 8.

Further, guide pins 61a and 61b as the first and second moving guide members similar to the fourth embodiment are integrally formed on the outer peripheral surface of the rotary shaft 70. Therefore, in the state shown in FIG. 34, the lock locking device 14 does not operate even if the knob 103 is operated, and the door 101 is in a locked state in which the door 101 cannot be opened. When the nap 26 is pulled up, the operation lever 12 moves to a position indicated by a two-dot chain line, and the output shaft 9 projects from the main body case 2. Therefore, if the knob 103 is operated, the lock / lock device 14 operates and the door 101 is unlocked so that the door 101 can be opened.

Then, the drive motor 5 is driven from the state shown in FIG. 34 to rotate the rotating gear 19 and the rotating shaft 70 clockwise. Then, initially, the sliding portion 63b of the guide pin 61b does not slide on the second guide surface 21b. When the rotating shaft 70 rotates to some extent, the guide pin 61b slides on the second guide surface 21b. Then, FIG.
As shown in the figure, the guide pin 61b is
By pressing b, the output shaft 9 is moved upward.

When the connecting pin 11 moves above the horizontal line L, as shown in FIG.
A spring (not shown) in 4 raises the output shaft 9 upward. Therefore, the stroke restricting piece 57 contacts the protrusion restricting portion 53b of the output shaft 9, and the protrusion of the output shaft 9 is restricted. Further, when the rotating shaft 70 rotates clockwise, the contact surface 62a of the guide pin 61a contacts the regulating surface 25a as the first regulating portion, and the rotation of the rotating shaft 70 is regulated. At this time, the drive of the drive motor 5 stops and the rotation of the rotating shaft 70 stops.

When the knob 26 is depressed, the operation lever 12 moves to the solid line in FIG. 34, and the output shaft 9 enters the main body case 2. Therefore, the door 101
, The lock / lock device 14 does not operate and the door 10
1 is in a locked state where it cannot be opened.

From the state shown in FIG. 37, the drive motor 5 is driven to rotate the rotating gear 19 and the rotating shaft 70 in the counterclockwise direction. Then, initially, the sliding portion 63a of the guide pin 61a does not slide on the first guide surface 21a. And
When the rotation shaft 70 rotates to some extent, the first guide surface 21
The guide pin 61a slides on a. Then, as shown in FIG. 38, the guide pin 61a presses the first guide surface 21a to move the output shaft 9 downward.

When the connecting pin 11 moves below the horizontal line L, as shown in FIG.
A spring (not shown) in 4 pulls the output shaft 9 downward. Therefore, the stroke restricting piece 57 abuts on the immersion restricting portion 53a of the output shaft 9, and the immersion of the output shaft 9 is restricted. Further, when the rotating shaft 70 rotates counterclockwise, the contact surface 62b of the guide pin 61b contacts the regulating surface 25b as the second regulating portion, and the rotation of the rotating shaft 70 is regulated.
At this time, the drive of the drive motor 5 stops and the rotation of the rotating shaft 70 stops.

Then, when the knob 26 is pulled up, the operation lever 12 moves to the two-dot chain line in FIG. 34, and the output shaft 9 projects into the main body case 2. Therefore, door 1
When the user operates 01, the lock / lock device 14 operates to enter an unlocked state in which the door 101 can be opened.

Since the guide pins 61a and 61b are formed on the rotary shaft 70 so as to have the gap G, the guide pins 61a and 61b come into contact with the regulating surfaces 25a and 25b.
The vertical movement of the output shaft 9 based on the up / down operation of the knoop 26 can be performed in the same manner as in the fourth embodiment even if it is slightly separated.

If the contact surfaces 62a, 62b of the guide pins 61a, 61b are deviated in the circumferential direction as in the fourth embodiment, the guide member 20 is guided by the vertical movement of the output shaft 9. The pins 61a and 61b do not interfere.

Also in this alternative example, the rotation gear 19, the support member 43, and the guide pin 61 are driven by the drive motor 5.
When the a and 61b rotate in the forward and reverse directions, the guide pins 61
Only one of a and 61b abuts or slides on the guide member 20. The guide pin 61a regulates the clockwise rotation of the rotating gear 19, and the guide pin 61b regulates the counterclockwise rotation of the rotating gear 19. Therefore, when regulating the rotation of the rotary gear 19 that causes the output shaft 9 to protrude or sink, the rotation is performed by the pair of guide pins 61a and 61b. As a result, the burden on the guide pins 61a and 61b is reduced by half compared to the conventional case.
The life of the guide pins 61a and 61b can be made twice or more longer than that of the conventional actuator to improve the durability.

Furthermore, in this alternative example, the first and second
Sliding portions 63a, 63 of guide pins 61a, 61b formed on a rotating shaft 70 that slides on the guide surfaces 21a, 21b.
b is curved. Therefore, the guide pins 61a,
When 61b slides on the first and second guide surfaces 21a and 21b, line contact occurs, and the sliding can be performed smoothly.

Further, when the guide pins 61a, 61b abut against the regulating surfaces 25a, 25b of the guide member 20, the abutment comes into contact with the surfaces, so that the impact given to the guide pins 61a, 61b is dispersed to guide the guide pins 61a, 61b. , 61b can be avoided. To that extent, the durability of the guide pins 61a and 61b can be improved.

When the guide pin 61a is in contact with the regulating surface 25a or when the guide pin 61b is in contact with the regulating surface 25b, the guide pins 61a, 61b are connected to the first and second guide surfaces 21a, 21b. It is in a state separated from. When the rotation gear 19 rotates to some extent, the guide pins 61a and 61b come into contact with the first and second guide surfaces 21a and 21b.

Therefore, by assembling the output shaft 9 and the operation lever 12, for example, even if the output shaft 9 slightly rises, the guide pin 61b is prevented from coming into contact with the flat surface 22a. 1 can be reliably prevented from becoming inoperable.

For the purpose of reducing the weight of the electric actuator 1, the main body case 2, the rotating gear 6, the output shaft 9, the guide member 20, the rotating gear 19, the support cylinders 60a and 60b, and the guide pins 61a and 61b are made of resin. Although it is made of metal, it can be changed to metal if necessary. Further, the guide pins 61a and 61b may be configured separately so as to be fitted to the inner peripheral surfaces of the support cylinder portions 60a and 60b. Similarly, a separate structure in which the guide member 20 is attached and fixed to the output shaft 9 may be employed.

Further, in the first to fourth embodiments, the electric actuator 1 for operating the door locking / locking device 14 is embodied. However, the present invention is not limited to this. For example, the output shaft 9 may be used as an operating rod. May be used.

The present invention is not limited to the above-described embodiments, but can be embodied in, for example, the following modes .

[0175]

[0176] (1) first and second movement guide member according to claim 1, wherein also in contact with the first and second guide surfaces, the first and second movement guide member first and second restriction The shape may be such that it comes into contact with the surface when contacting the part .

[0177] (2) according to claim 1, wherein, may be formed on the inner peripheral surface of the support member by excursion to a position not overlapping the first and second movement guide member in the axial direction of the output shaft. With this configuration, the rotating member, the supporting member, and the first and second moving guide members formed on the inner peripheral surfaces of the supporting member can be integrally formed of resin.

[0178]

As described above in detail, Te placed <br/> to claim 1, the output shaft is an excellent effect capable of improving the strength when immersed or protruding.

[0179] The first be allowed to haunt the output shaft by manually
In addition, the manual operation of the output shaft can be reliably performed without the second movement guide member interfering with the first and second restriction portions of the guide member.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating a configuration of an electric actuator according to a first embodiment of the present invention.

FIG. 2 is an explanatory view showing that an output shaft is immersed by clockwise rotation of a rotating gear and a guide member.

FIG. 3 is an explanatory diagram illustrating that a guide pin abuts on an immersion position restricting portion to restrict immersion of an output shaft.

FIG. 4 is an explanatory diagram for explaining that an output shaft is projected by rotation of a rotating gear and a guide member in a counterclockwise direction.

FIG. 5 is a front view showing a state in which a guide member is provided on the rotary gear.

FIG. 6 is a front view of a guide member.

FIG. 7 is a sectional view of an output shaft.

FIG. 8 is a front view of a guide pin.

FIG. 9 is a cross-sectional view illustrating a configuration of an electric actuator according to a second embodiment of the present invention.

FIG. 10 is an explanatory diagram illustrating that a guide pin abuts on an immersion position restricting portion to restrict immersion of an output shaft.

FIG. 11 is an explanatory diagram illustrating that the output shaft protrudes due to clockwise rotation of the rotation shaft and the guide member.

FIG. 12 is an explanatory diagram illustrating that a guide pin abuts on a protruding position restricting portion to restrict the protrusion of the output shaft.

FIG. 13 is an explanatory diagram illustrating that the output shaft is immersed by rotation of the rotation shaft and the guide member in a counterclockwise direction.

FIG. 14 is an explanatory diagram showing a shape of a guide member formed on a rotation shaft.

FIG. 15 is a front view showing a configuration of a rotating shaft.

FIG. 16 is a front view showing a configuration of an output shaft.

FIG. 17 is a cross-sectional view illustrating a configuration of an electric actuator according to a third embodiment of the present invention.

FIG. 18 is a front view showing a configuration of a support member provided on the rotating gear.

FIG. 19 is an explanatory diagram for explaining that the guide pin abuts on the immersion position restricting portion to restrict immersion of the output shaft.

FIG. 20 is an explanatory diagram for explaining that the output shaft protrudes due to the counterclockwise rotation of the support member and the guide pin.

FIG. 21 is an explanatory view illustrating that a guide pin abuts on a protruding position restricting portion to restrict the protrusion of the output shaft.

FIG. 22 is an explanatory diagram illustrating that the output shaft is retracted by clockwise rotation of the support member and the guide pin.

FIG. 23 is a front view showing a state where the guide member is provided on the output shaft.

FIG. 24 is a sectional view showing a configuration of an electric actuator according to a fourth embodiment of the present invention.

FIG. 25 is a partial cross-sectional view showing a state in which a stroke adjusting unit is inserted into a through hole of a regulating unit.

FIG. 26 is an explanatory diagram showing a state in which the output shaft is slightly pushed up by clockwise rotation of the rotary gear.

FIG. 27 is an explanatory diagram showing a state where the output shaft protrudes from the main body case.

FIG. 28 is an explanatory diagram showing a state in which the output shaft is slightly pushed down by the counterclockwise direction of the rotary gear.

FIG. 29 is an explanatory diagram showing a state in which a guide pin 61b comes into contact with a flat surface 22b.

FIG. 30 is an explanatory diagram showing a state where the guide pin 61b is slightly separated from the flat surface 22b due to impact per surface.

FIG. 31 is an explanatory diagram illustrating that the guide member 20 on the flat surface 22a side does not interfere with the guide pin 61a even when the output shaft is raised.

FIG. 32 is a cross-sectional perspective view showing that a guide pin is formed with a gap on the inner peripheral surface of the support cylinder.

FIG. 33 is a developed view showing a state where the inner peripheral surface of the support cylinder is developed in a planar shape.

FIG. 34 is a sectional view of an electric actuator as another example of the fourth embodiment.

FIG. 35 is a partially exploded perspective view showing a configuration in which projection or immersion of the output shaft is regulated.

FIG. 36 is an explanatory view showing a state where the output shaft is slightly pushed upward by a guide pin.

FIG. 37 is an explanatory diagram showing a state where the output shaft protrudes from the main body case.

FIG. 38 is an explanatory diagram showing a state where the output shaft is slightly pushed down by the guide pin.

FIG. 39 is a side view showing the configuration of a rotating gear and a rotating shaft.

FIG. 40 is a schematic configuration diagram showing an electric actuator and a lock locking device provided on a door.

FIG. 41 is an electric circuit diagram for operating the lock locking device.

[Explanation of symbols]

Reference numeral 5: drive motor, 9: output shaft, 15: guide pin as a first guide member, 16: guide pin as a second guide member, 19: rotary gear as a rotary member, 20
... guide members as guide members, 21a, 21b ... guide surfaces, 23a ... immersion position regulating portions as immersion regulating positions, 2
3b: projecting position restricting portion as a projecting restricting position, 25a,
25b: regulating surface as first and second regulating portions, 32 ...
Rotating shaft, 43: support member, 45: guide pin as a first movement guide member, 46: guide pin as a second movement guide member, 51: a stroke adjusting portion constituting a regulating means,
53a: immersion position restricting portion constituting restricting means, 53b ...
Protruding position restricting part constituting restricting means, 57: Stroke restricting piece constituting restricting means, 60a, 60b: Supporting cylinder part as supporting member, 61a, 61b ... Guide pin as first and second moving guide members , 70 ... rotating shaft.

Claims (1)

(57) [Claims] 1. A a rotary member for forward and reverse rotation by a drive motor, wherein the inserted through a cylindrical supporting member to the rotational center of the rotating member, first and second, which are provided on the inner peripheral surface of the support member
A moving guide member, an output shaft projecting or retracting from the case body while being inserted through the support member, and a guide surface provided on the output shaft for guiding the first or second moving guide member. A guide member having a spiral shape, the guide member having both ends separated in the circumferential direction of the output shaft, and a first movement guide member abutting on one end of the guide member to regulate the rotational movement thereof. A second regulating portion for regulating the rotational movement of the guide member by contacting a second moving guide member at the other end of the guide member. Is provided with a restricting means for restricting the protrusion or immersion of the output shaft, and when the output shaft is moved in and out in a state where the first moving guide member is in contact with the first restricting portion, the second moving guide member is Without interfering with the second regulator,
When the output shaft is moved in and out in a state where the second movement guide member is in contact with the second regulating portion, the first movement guide member is moved to the first position.
An electric actuator, wherein the first and second moving guide members are provided at positions displaced in the direction of the inner peripheral surface of the support member so as not to interfere with the restricting portion.