JP3374441B2 - Door lock operating device - Google Patents

Description

Detailed Description of the Invention

[0001]

[Object of the Invention]

[0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door lock operating device using a sun gear and a satellite gear.

[0003]

2. Description of the Related Art Conventionally, as a door lock operating device of this type, one disclosed in Japanese Patent Laid-Open No. 60-55186 is known. This has a motor, a sun gear linked to the motor, a satellite gear that meshes with the sun gear and can rotate and revolve, and an output member that can mesh with the satellite gear. The satellite gear is fixed to the rotation shaft, and is supported by a pair of support members supported by the output shaft of the motor so as to be rotatable and revolvable, and the space between the satellite gear and the support member is the space between the satellite gear and the support member. A biasing member for generating frictional resistance is disposed between them. In this conventional device, when the motor is operated to rotate the sun gear, friction force is generated between the satellite gear and the revolving structure by the biasing member. It revolves around and meshes with the output member. As a result, the satellite gear starts to rotate against the frictional resistance generated between the satellite gear and the revolving structure,
The rotation of the sun gear is transmitted to the output member via the rotation of the satellite gear. As a result, the output member rotates and the door lock operating device linked to the output member is operated.

[0004]

However, in the conventional device described above, since the sun gear is directly fixed to the rotating shaft of the motor, a torque sufficient and necessary to operate the door lock operating device is applied to the output member. It is difficult to give. As a result, a large motor is required to obtain the necessary and sufficient torque, and the size of the motor increases the size of the device itself. Further, if a reduction mechanism is simply arranged between the motor and the sun gear in order to obtain a necessary and sufficient torque, the size of the device itself is increased by the amount of the reduction mechanism.

SUMMARY OF THE INVENTION Therefore, it is a technical object of the present invention to provide a door lock operating device in which a necessary and sufficient torque can be applied to an output member without improving the satellite gear support structure and increasing the size of the operating device itself. It is what

[0006]

[Constitution of the invention]

[0007]

Means for Solving the Problems] technical means taken in the present invention to solve the above technical problem, a worm gear fixed to the motor, is meshed with the worm gear
Is formed integrally with the sun gear and is coaxial with the sun gear
A worm wheel gear to rotate, the worm Wheel
And a biasing support member for biasing the satellite gear arranged on the gear so as to generate frictional resistance between the satellite gear and the worm wheel gear and for supporting the satellite gear in a freely rotating and revolving manner. That is.

[0008]

According to the above technical means, the deceleration action occurs between the motor and the sun gear due to the engagement of the worm gear and the worm wheel gear. Therefore, necessary and sufficient torque is applied to the output member. Further, since it is supported by the biasing support member having a function of generating frictional resistance between the satellite gear and the worm wheel gear to enable the satellite gear to revolve, the satellite gear support structure is simplified. It Therefore, since the supporting structure of the satellite gear is simplified, the operating device itself does not become large even if the worm gear and the worm wheel gear are arranged. As a result, necessary and sufficient torque can be applied to the output member without increasing the size of the operating device itself.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings.

As shown in FIG. 1, the door lock operating device 1 is linked to a locking lever 21 of a door lock operating device 2 via a link 3. Further, the locking lever 21 is connected to the locking device 21 through the link 4.
The locking knob 5 that is manually operated is linked with the above.

As shown in FIGS. 1 and 2, the door lock operating device 1 mainly comprises a motor 11, a sun gear 12, a satellite gear 13 and an output member 14. These members 11, 12, 13, 14 are built in the case 15, and the shaft portion 14 a of the output member 14 protruding from the case 15 is connected to the link 3 via the lever 6.

The sun gear 12 has a pin 16 for the case 1
5 is rotatably supported. A worm wheel gear 17 having a diameter larger than that of the sun gear 12 is coaxially and integrally formed with the sun gear 12 with the pin 16 as a central axis.
Further, the worm wheel gear 17 is formed with a circular support groove 17a centering on the pin 16.

The motor 11 is fixed to a case 15, and a worm gear 18 meshing with a worm wheel gear 17 is fixed to a rotating shaft 11a of the motor 11. The mesh between the worm wheel gear 17 and the worm gear 18 is
The teeth that mesh with each other have a large advance angle with respect to the friction angle, and torque can be transmitted from the worm gear 18 to the worm wheel gear 17 and from the worm wheel gear 17 to the worm gear 18.

The satellite gear 13 is the worm wheel gear 1.
7 and is meshed with the sun gear 12. A pin portion 13a is planted in the satellite gear 13, and the pin portion 13a is inserted into the support groove 17a so that the satellite gear 13 can rotate and revolve freely. A leaf spring 19 is rotatably supported on the pin 16. The leaf spring 19 is a pin portion 13a of the satellite gear 13.
Is engaged with the pin portion 13b that is planted coaxially with
The satellite gear 13 is constantly urged toward the worm wheel gear 17 to generate frictional resistance between the worm wheel gear 17 and the satellite gear 13.

The output member 14 integrally includes shaft portions 14a and 14c and a sector gear portion 14b, and the output member 14 is rotatably supported by the case 15 by the shaft portions 14a and 14c. As described above, the shaft portion 14a is arranged so as to project outward from the case 15 and is fixed so that the lever 6 integrally rotates.
The part b is arranged so that a part thereof is located on the revolution trajectory of the satellite gear 13 and can be meshed with the satellite gear 13. or,
The case 11 has a pair of elastically deformable stoppers 20 and 21.
Is fixed. The stoppers 20 and 21 are arranged on the rotation locus of the sector gear portion 14b due to the rotation of the output member 14, and can be brought into contact with both ends of the sector gear portion 14b. The rotation of the output member 14 is restricted by the contact between the sector portion 14b and the stoppers 20 and 21, and thus the operating range of the output member 14 is defined.

Next, the operation will be described.

FIG. 1 shows an unlocked state of the door lock operating device 2 and an initial state of the planet gear 13 of the door lock operating device 1 in which the planet gear 13 is separated from the output member 14. When the motor 11 is operated in one direction in this state, torque is transmitted from the worm gear 18 to the worm wheel gear 17, the worm wheel gear 17 is rotated, and the sun gear 12 integrated with the worm wheel gear 17 is transmitted.
Rotates. At this time, the satellite gear 13 has its pin portion 13
Although it tries to rotate about a and 13b (the rotation of the satellite gear 13), the satellite gear 13 is urged by the leaf spring 19 toward the worm wheel gear 17 side so that the space between the worm wheel gear 17 and the satellite gear 13 is increased. Since frictional resistance occurs in the satellite gear 13, the satellite gear 13 does not rotate (the satellite gear 13 rotates) about its pin portions 13a and 13b. As a result, as shown in FIG.
Turn around in direction A (revolution of satellite gear 13 in direction A)
As a result, the satellite gear 13 meshes with the setter gear portion 14b of the output member 14.

When the satellite gear 13 and the sector gear portion 14b of the output member 14 mesh with each other, the revolution of the satellite gear 13 is restricted and the satellite gear 13 resists the frictional resistance generated between the worm wheel gear 17 and the satellite gear 13. The rotation of the sun gear 12 starts to rotate and the rotation of the output member 14 is transmitted via the satellite gear 13.
Be transmitted to. At this time, the worm wheel gear 17 and the sun gear 12 continue to rotate, and the satellite gear 13 is guided into the support groove 17a of the worm wheel gear 17. As a result, as shown in FIG. 4, the output member 14 abuts the stopper 21 so that the end of the sector gear portion 14b is elastically deformed around the shaft portions 14a and 14c as shown in FIG. 4 is rotated in the direction B shown in FIG. On this occasion,
Due to the frictional resistance between the worm wheel gear 17 and the satellite gear 13, the satellite gear 13 has a sector gear portion due to the relationship between the force from the output member 14 and the sun gear 12 applied to the satellite gear 13. The satellite gear 13 is pressed against the sector gear portion 14b.
Is prevented from leaving. As a result, the lever 6 which rotates integrally with the output member 14 moves to the position shown by the chain double-dashed line in FIG. 1, and the locking lever 21 of the door locking mechanism 2 moves to the position shown by the chain double-dashed line in FIG. Moving. Therefore, the door lock operating device 2 is locked. In this case, the locking knob 5 also moves to the locked position.

When the end portion of the sector gear portion 14b of the output member 14 elastically deforms the stopper 21 and abuts the stopper 21, the door lock operating device 2 is locked, and the motor 1
1 unidirectional operation stops. Thereafter, the output member 14 is rotated in the C direction shown in FIG. 5 by the restoring force of the elastically deformed stopper 21. As a result, the satellite gear 13 tries to rotate in the opposite direction to the above, and the sun gear 12 and the worm wheel gear 13 also try to rotate in the opposite direction. As a result, since the leaf spring 19 causes a frictional resistance between the satellite gear 13 and the worm wheel gear 17, as shown in FIG. 6, the satellite gear 13 revolves in the direction D and the output member 14 is rotated. Away from the sector gear part 14b of
Return to the initial state. At this time, the worm wheel gear 1
The meshing between 7 and the worm gear 18 enables the torque transmission from the worm wheel gear 17 to the worm gear 18, and therefore the return of the planetary gear 13 to the initial state is not hindered.

In order to change the door lock actuating device 2 from the locked state to the unlocked state, the motor 11 may be operated in the other direction, contrary to the above. In this case, the rotation of the output member 14 is restricted by the end of the sector gear portion 14b contacting the stopper 20 so as to elastically deform the stopper 20. The locking knob 5 also moves to the unlocked position.

In the unlocked state of the door lock operating device 2 and the initial state of the door lock operating device 1 shown in FIG.
When the locking knob 5 is manually pressed, the locking lever 21 moves to the position shown by the chain double-dashed line in FIG. Yotsutte
The door lock operation device 2 is locked. At this time, the lever 6 also moves to the position of the chain double-dashed line in FIG. 1 via the link 3 but the planetary gear 13 of the door lock operating device 1 is in the initial state separated from the output member 14, so the locking knob The respective components 11, 12, 13, 14 of the door lock operating device 1 do not move due to the manual operation by 5.

In order to change the door lock operating device 2 from the locked state to the unlocked state, the locking knob 5 may be manually pulled up in the opposite manner to the above. Also in this case, since the planetary gear 13 of the door lock operating device 1 is in the initial state separated from the output member 14, the respective components 11, 12, 13 of the door lock operating device 1 do not move due to the manual operation by the locking knob 5. .

As described above, since the torque of the motor 11 is transmitted to the sun gear 12 via the worm gear 18 and the worm wheel gear 17, the worm gear 18 and the worm wheel gear 17 are meshed with each other so that the motor 11 and the sun gear 17 are engaged with each other. A deceleration action will occur between 12 and 12.
Therefore, due to this decelerating action, a necessary and sufficient torque is given to the sun gear 12, that is, the output member 14, and the door lock operating device 2 can be operated by the small motor 11. In addition, the satellite gear 13 is
The support structure of the satellite gear 13 is simplified because it is supported by a leaf spring 19 having a function of generating frictional resistance between the worm wheel gear 17 and the worm wheel gear 17 and enabling the revolution of the satellite gear 13. Becomes Therefore, the door lock operating device 1 itself is downsized by the simplification of the supporting structure, and even if the worm gear 18 and the worm wheel gear 17 are arranged, the door lock operating device 1 itself does not become large. Moreover, since the satellite gear 13 is also supported by inserting the pin portion 13a of the satellite gear 13 into the support groove 17a of the worm wheel gear 17, the meshing pitch between the sun gear 12 and the satellite gear 13 is accurate. It is well secured, and the support that secures the reliable revolution of the satellite gear 13 is possible. Further, torque can be transmitted from the worm wheel gear 17 to the worm gear 18, that is, the reverse rotation operation in which the torque from the sun gear 12 is transmitted to the motor 11 via the worm wheel gear 17 and the worm gear 18 is possible. 1 lock
When switching the unlocking, the output member 14 is the sector gear portion 14
Since the end of b contacts the stopper 21.20 so as to elastically deform the stoppers 21 and 20, when the motor 11 is stopped, the satellite gear 13 always outputs by utilizing the restoring force due to the elastic deformation of the stoppers 21 and 20. The initial state is set apart from the member 14. As a result, when the locking knob 5 is manually operated, each component 1 of the door lock operating device 1 is operated.
It is possible to prevent 1, 12, 13 from moving along with each other, and it is possible to manually operate the locking knob 5 with a light operating force.

As shown in FIG. 7, the two satellite gears 1 fitted into the support grooves 17a of the worm wheel gear 17 are inserted.
3,22 may be used. In this case, the leaf spring 19 has a bifurcated shape so as to be engaged with the pin portions 13b and 22b of both satellite gears 13 and 22. With such a configuration, the motor 1
1 operates in one direction to engage the satellite gear 13 with the output member 14, the door lock operating device 2 is switched from the unlocked state to the locked state, and the motor 11 operates in the other direction to cause the satellite gear 22 to move. And the output member 14 are engaged with each other, and the door lock operating device 2 is switched from the locked state to the unlocked state. As a result, the switching time from the unlocked state to the locked state of the door lock actuating device 2 and the switching time from the locked state to the unlocked state can be made substantially the same and short.

As shown in FIGS. 8 and 9, the sun gear 12 and the worm wheel gear 17 have a divided structure, and an elastic body 23 such as a leaf spring is arranged between the sun gear 12 and the worm wheel gear 17. It may be configured. In this case, the worm wheel gear 17 includes the circular guide groove 17b and the support groove 17 which are formed coaxially with the support groove 17a.
a has a notch groove 17c formed in a wall 17d that divides the guide groove 17b from the guide groove 17b, and the sun gear 12 has a pair of protrusions 12a and 12b fitted in the guide groove 17b. Are arranged in the guide groove 17b, and both ends 23a,
23b is located in the notch groove 17c and is formed in the wall 17d of the worm wheel gear 17 and the projections 12a, 1 of the sun gear 12.
2b can be engaged. In the above configuration,
The torque transmission from the worm wheel gear 17 to the sun gear 12 is such that the wall portion 17d of the worm wheel gear 17 engages with the end 23b or 23a of the elastic body 23 to bend the elastic body 23 and the end 23a of the elastic body 23. Or 23b is engaged with the protrusion 12a or 12b of the sun gear 12. Further, the restoring force of the deflected elastic body 23 acts on the torque transmission (reverse operation) from the sun gear 12 to the worm wheel gear 17. This allows
The satellite gear 13 can be more reliably returned to the initial state.

[0026]

According to the present invention, since the torque of the motor is transmitted to the sun gear through the worm gear and the worm wheel gear, the mesh between the worm gear and the worm wheel gear causes the torque between the motor and the sun gear. A deceleration action will occur. Therefore, due to this deceleration action, a necessary and sufficient torque can be given to the output member, and the door lock actuating device can be actuated by a small motor. Further, since the satellite gear is supported by an urging support member having a function of generating frictional resistance between the satellite gear and the worm wheel gear to enable the satellite gear to revolve, the satellite gear support structure Can be simplified. Therefore, the operating device itself can be downsized by the simplification of the supporting structure, and the downsized worm gear and worm wheel gear can be arranged without increasing the size of the operating device itself. Can be installed.

Further, according to the present invention, since the satellite gear is supported by being inserted into the support groove formed in the worm wheel gear, the meshing pitch between the sun gear and the satellite gear can be accurately ensured. Therefore, it is possible to support the satellite gear by ensuring a reliable revolution of the satellite gear.

Further, according to the present invention, the torque can be transmitted from the worm wheel gear to the worm gear, and the output member is brought into contact with the stopper so as to elastically deform the stopper, so that the operation is restricted. At the time of stop, the restoring force due to the elastic deformation of the stopper can be used to bring the satellite gear into the initial state in which it is always separated from the output member. Accordingly, each component of the operating device does not move during the manual operation, and the manual operation can be performed with a light operating force.

Moreover, according to the present invention, since the urging member for urging the worm wheel gear to rotate relative to the sun gear is arranged between the worm wheel gear and the sun gear, the satellite can be more reliably operated. The gear can be returned to the initial state separated from the output member.

[Brief description of drawings]

FIG. 1 is a plan view of a door lock operating device according to the present invention.

2 is a cross-sectional view of FIG.

FIG. 3 is an operation explanatory view of the door lock operating device according to the present invention.

FIG. 4 is an operation explanatory view of the door lock operating device according to the present invention.

FIG. 5 is an operation explanatory view of the door lock operating device according to the present invention.

FIG. 6 is an operation explanatory view of the door lock operating device according to the present invention.

FIG. 7 is a plan view showing a first modified example of the door lock operating device according to the present invention.

FIG. 8 is a partial transverse sectional view showing a second modification of the door lock operating device according to the present invention.

9 is a top view of a main part of FIG.

[Explanation of symbols]

1 Door lock operation device 11 motor 12 sun gear 13 satellite gears 14 Output member 17 worm wheel gear 18 worm gear 19 Leaf spring (biasing support member) 17a Support groove 20,21 Stopper 23 Elastic body (biasing member)

Continuation of front page (56) Reference JP-A-2-96070 (JP, A) JP-A-2-261180 (JP, A) JP-A-60-55186 (JP, A) JP-A-4-83074 (JP , A) Actual Kaihei 4-58535 (JP, U) Actual Kaihei 4-88358 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) E05B 65/20 B60J 5/04

Claims (4)

(57) [Claims] 1. A door lock operating device having a motor, a sun gear linked to the motor, a satellite gear meshing with the sun gear, and an output member meshable with the satellite gear. Formed worm gear and formed integrally with the sun gear while meshing with the worm gear
A worm wheel gear to rotate the sun gear coaxially with the, with the satellite gear that is disposed on the worm wheel gear urges the frictional resistance is generated between the worm wheel gear and the satellite gear A door lock operating device having an urging support member that supports the satellite gear to rotate and revolve freely. 2. The door lock operating device according to claim 1, further comprising: a support groove formed in the worm wheel gear, into which the satellite gear is fitted, and a supporting groove for allowing rotation and revolution of the satellite gear. 3. The mesh between the worm gear and the worm wheel gear is such that torque can be transmitted from the worm gear to the worm wheel gear and from the worm wheel gear to the worm gear, and further,
3. The door lock operating device according to claim 1, wherein the output member is brought into contact with an elastically deformable stopper and operation thereof is restricted. 4. A urging member disposed between the worm wheel gear and the sun gear for urging the worm wheel gear to rotate with respect to the sun gear.
Door lock operating device described.