JP2002295602A - Motor device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To transmit the revolution output of a motor, even if an elastic body has fallen out, in transmitting the revolution output of the motor to a reduction unit via the elastic body. SOLUTION: A first engagement part 51A of a holder 5A is connected to one end of the elastic body 6A, and a second engagement part 72A of a first pinion gear 7A is connected to the other end. The first engagement part 51A is formed with an extension part 53A for covering the elastic body 6A, and an engagement recessed part 54 is integrally formed with a tip of the extension part. The second engagement part 71A is formed with a cover part 73A extended from a bottom part 72A, and an engagement projecting part 74A, to be engaged with the engagement recessed part 54a of the tip is connected to the cover part with a space. Even if the elastic body 6 falls out in the worst case, the revolution output of the motor 3 is transmitted to the reduction gear side via the engagement recessed part 54A and the engagement projecting part 74A.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a motor device for operating a driven part by reducing the rotational output of a motor.

[0002]

2. Description of the Related Art Conventionally, it is generally well known to operate a driven part by reducing the rotational output of a motor. For example, as one example, locking or unlocking a door lock, opening a door, or opening or closing a door. There is a door lock device configured to perform an operation such as closing by driving a motor. In this case, since the operation of locking or unlocking the door or opening or closing the door in this door lock device requires a high torque, the reduction unit must be configured to increase the reduction ratio. No.

On the other hand, the door lock device is required to be reduced in size due to space saving of a mounting portion, and a small motor is used as a motor itself. However, when a small motor is output at a high rotation speed, the vibration generated by the rotation output of the motor is transmitted to the reduction section.

A door lock device usually has a motor, a speed reduction portion connected to the motor, and a drive mechanism for operating the output of the speed reduction portion to a driven portion, and these are housed in a housing. ing. When the vibration of the motor is transmitted to the deceleration section and beyond, the housing generates vibrations and adversely affects the devices around the housing. Therefore, an elastic body is provided between the motor and the reduction section to prevent vibration. It is conceived that the vibration of the motor is not transmitted to the portion after the deceleration portion by intervening (see Japanese Patent Application No. 2000-322557).

[0005]

However, when an elastic body is interposed between the output shaft of the motor and the input shaft on the reduction section side, as shown in FIGS. The engagement with the pair of engagement portions 50 and 70 that engage with the notch recesses 60 a and 60 a is formed on both end surfaces of the elastic body 60, and the pair of engagement portions 50 and 70 form the notch recesses 60 a and 60 a If it is formed to have a pair of protrusions 50a, 70a for engaging with the elastic member 60, there is a possibility that a difference in torque may occur between both ends of the elastic body 60 due to the high speed reduction configuration on the speed reduction portion side. Due to the difference in the generated torque, there is a possibility that the elastic body 60 may be deformed by being twisted or may be disengaged from the pair of engaging portions 50 and 70. The fact that the elastic body 60 is disengaged from the pair of engaging portions is, for example, in the case of the door lock device,
Since the rotation output of 0 is not transmitted, the door lock cannot be locked or cannot be unlocked while the door is locked.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems, and when an elastic body is interposed between a motor and a speed reduction unit, the door lock is locked even if the elastic body is damaged or falls off for some reason. It is an object of the present invention to provide a motor device that can perform locking and unlocking of a motor.

[0007]

In order to solve the above-mentioned problems, in the motor device according to the present invention, an elastic member is interposed between the motor and the speed reducing portion. Is transmitted to the speed reducer side. The elastic body is engaged with a first engagement portion disposed on the motor side and a second engagement portion disposed on the reduction portion side and connected via transmission means, respectively, via a drive mechanism. Thus, the output can be transmitted to the driven portion. Further, the first engagement portion and the second engagement portion are provided with corresponding concave and convex portions in which both engagement portions can be directly engaged, and the elastic body directs the rotation output of the motor to the reduction portion side. In the normal state in which the transmission is performed, since the concave and convex portions are not in the engaged state, the first engaging portion and the second engaging portion do not directly engage with each other, and the rotation output of the motor is driven by the elastic body. The first engaging portion and the second engaging portion can be directly engaged only when a state where transmission by the elastic body is impossible can be transmitted to the driven portion via the mechanism portion. In addition, the rotation output of the motor can be transmitted to the driven unit via the reduction unit / drive mechanism unit.

Therefore, even if the elastic body is damaged or falls off for some reason, the rotation output of the motor can be transmitted to the reduction section through the first engagement section and the second engagement section. ,
The door lock can be locked or unlocked. In addition, in the normal state, the first engagement portion and the second engagement portion are not directly engaged, so that the vibration generated by driving the motor does not move from the first engagement portion to the second engagement portion. Is not transmitted to

In the invention according to claim 2, the first engaging portion and the second engaging portion are both formed of a cylindrical body, and the concave and convex portions are respectively formed at portions opposed to each other in a longitudinal direction. When the rotation output of the motor is transmitted to the deceleration portion by the elastic body, the concave portion and the convex portion have a gap therebetween, and are configured to be in a state where transmission is impossible, so that the motor Is always absorbed by the elastic body and is not transmitted to the reduction portion through the first engagement portion and the second engagement portion.

According to the third aspect of the present invention, the first engagement portion and the second engagement portion are formed by an inner cylinder and an outer cylinder that can be fitted to the inner cylinder, and the uneven portion is formed by the inner cylinder. When the rotation output of the motor is transmitted to the speed reduction unit by the elastic body, the concave portion and the convex portion are formed at portions opposed to each other on an outer surface of the cylinder and an inner surface of the outer cylinder. The vibration generated by driving the motor is always absorbed by the elastic body and decelerated through the first engagement portion and the second engagement portion. There is no transmission to the part side.

According to a fourth aspect of the present invention, the transmission means between the first engaging portion, the second engaging portion and the elastic body has a press-fitting portion into which the elastic body is press-fitted and engaged with the covering portion. Therefore, in a normal state where the elastic body is not broken or dropped, the press-fitting portions of the first engaging portion and the second engaging portion hold the elastic body firmly and rotate the motor. The output can be transmitted to the reduction section side.

According to the fifth aspect of the present invention, by transmitting the rotation output of the motor to lock or unlock the door lock, or to open or close the door, vibration generated by the motor is suppressed and the elastic body is provided. Provided is a door lock device capable of performing a smooth operation without being deformed or coming off, and capable of locking or unlocking a door lock even if the elastic body is damaged or falls off for some reason. be able to.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. The motor device described in this embodiment is:
As one embodiment, the present invention is used for a door lock device that locks or unlocks a door lock or opens or closes a door. The door lock device 1 shown in FIG. 1 is particularly mounted on a vehicle door, and is provided with an unlatch lever 16 or a non-latch lever 16 as a driven member that is driven by a driving mechanism via a speed reduction unit through a rotation output of a motor. The drive is transmitted to the closer lever 25.

The unlatch lever 16 is operated to release the locked state of the door, and the closer lever 2 is released.
Numeral 5 is used to operate the door from a half-door state to a fully-closed state, all of which are arranged in the housing 2 and have their respective tips projecting out of the housing 2.

The motor 3 is operated so as to rotate forward or backward in response to a command from a control unit (not shown), and outputs its rotation output from an output shaft 4 of the motor 3 to a reduction unit via a holder 5 and an elastic body 6. It is connected so as to be able to transmit to the first pinion gear 7 and is built in one end of the housing 2. The elastic body 6 between the motor 3 and the first pinion gear 7
The connection structure in will be described later in detail.

The speed reducer is configured to increase the speed reduction ratio in order to apply a high torque to the unlatch lever 16 and the closer lever 25.
A large-diameter first reduction gear 10 meshed with the first pinion gear 7, a small-diameter intermediate pinion gear 11 disposed on the rotation center axis 12 of the first reduction gear 10, and an intermediate pinion gear 11. And a large-diameter second reduction gear 20 to be meshed.

The first pinion gear 7 and the first reduction gear 10 are made of a resin material, and the intermediate pinion gear 11 and the second reduction gear 20 are made of a metal material. The first reduction gear 10 and the second reduction gear 20 have output cams to be described later disposed integrally on the side surfaces.

The driving mechanism is a motor 3 that has been decelerated by the deceleration unit.
Output of the unlatch lever 16 and closer lever 2
5 and has an unlatch function unit for releasing the locked state of the door and a closer function unit for changing the door from the handle state to the fully closed state.

The first output cam 13 is disposed integrally with the side surface of the first reduction gear 10 and rotates about the shaft 12 simultaneously with the rotation of the first reduction gear 10;
A first operating lever 14 made of a resin material that is rotatable about a shaft 15 in contact with the output cam 13 and is driven by an unlatch lever 16 that is rotatable about the shaft 15 Is configured to be transmitted.

The closer function unit is integrally disposed on the side surface of the second reduction gear 20 so that the shaft
A second output cam 21 that rotates about 2 and a second operating lever 23 that is made of a metal material that contacts the second output cam 21 and rotates about a shaft 24, The drive is transmitted to a closer lever 25 rotatable about a shaft 24.

The first output cam 13 is formed to have an area engaged with a cam roller mounted on the first operating lever 14 and an area not engaged with the cam roller. The first output cam 13 and the cam roller of the first operating lever 14 are set so as to be in a non-interference region where they are not engaged.

The second output cam 21 is formed to have a region engaged with a cam roller mounted on the second operation lever 23 and a region not engaged with the cam roller. Second output cam 21 and second operating lever 23
Are set so as to be in a non-interference area not engaged with the cam roller.

The above-described door lock device 1 is mounted on a door of a vehicle body, and a mechanism (not shown) for engaging with the unlatch lever 16 and the closer lever 25 is arranged on the door receiving side.

Next, the operation of the door lock device 1 will be briefly described. The rotation of the motor 3 is transmitted from the output shaft 4 to the first pinion gear 7 via the elastic body 6 to rotate the first pinion gear 7. At this time, if the output shaft 4 rotates forward in response to a command from the control circuit, the unlatch function is activated, and the unlatch lever 16 can rotate about the shaft 15. At this time, the closer lever 25 is in a stopped state because the second operating lever 23 does not interfere with the second output cam 21.

That is, the first reduction gear 10 meshed with the first pinion gear 7 rotates, and at the same time, the first output cam 13
Rotates, the first output cam 13 engaged with the first output cam 13
The cam roller mounted on the operation lever 14 is moved along the operation portion of the first output cam 13, and the first operation lever 14 that rotates in one direction around the shaft 15 with the movement of the cam roller causes the unlatching lever. 16 rotates in a predetermined direction about the shaft 15, and the tip of the unlatch lever 16 is engaged with an engagement target member (not shown).

On the other hand, when the second reduction gear 20 meshed with the intermediate pinion gear 12 that rotates together with the rotation of the first reduction gear 10 rotates, the second output cam 21 simultaneously rotates. The cam roller of the second operating lever 23 is engaged with the second output cam 21 and is moved by the rotation of the second output cam 21. In this state, the cam roller of the second operating lever 23 is , The second operating lever 23 is in a stopped state since it is not engaged in the non-interference area of FIG. Therefore, the closer lever 25 is stopped without rotating.

When the output shaft 4 rotates in the reverse direction, the closer function is activated, and the closer lever 25 can rotate about the shaft 24. At this time, the unlatch lever 16 is in a stopped state because the first operating lever 14 does not interfere with the first output cam 13.

That is, the first reduction gear 10 meshed with the first pinion gear 7 rotates, and at the same time, the first output cam 13
Rotates, the first output cam 13 engaged with the first output cam 13
When the cam roller mounted on the operating lever 14 enters the non-interference area of the first output cam 13, the first operating lever 1
4 stops without rotating. Therefore, the stop state is maintained without the unlatch lever 16 also rotating.

On the other hand, when the second reduction gear 20 meshed with the intermediate pinion gear 12 that rotates together with the rotation of the first reduction gear 10 rotates, the second output cam 21 simultaneously rotates. The second output cam 21 is engaged with a cam roller of a second operation lever 23 and is moved by the rotation of the second output cam 21. In this state, since the cam roller of the second operating lever 23 engages with the operating portion of the second output cam, the second operating lever 23 rotates in one direction about the shaft 22. Accordingly, the closer lever 25 rotates in a predetermined direction about the shaft 22 and is engaged with an engagement target member (not shown).

Next, a drive transmission mechanism between the motor 3 and the first pinion gear 7 of the reduction unit will be described with reference to FIGS.

As shown in FIG. 2, a metal holder 5A of the first embodiment is mounted on the output shaft 4 of the motor 3 so as to rotate together with the output shaft 4, and the holder 5A is opposite to the output shaft 4 side. A first engagement portion 51A that engages with one end of the elastic body 6A of the first embodiment is formed at the end. On the other hand, at one end of the first pinion gear 7A of the first embodiment, a second engaging portion 71A that engages with the other end of the elastic body 6A is formed. The holder 5A and the first pinion gear 7A are separated from each other, and the elastic body 6A is provided between the first engagement portion 51A and the second pinion gear 7A.
It is arranged to be engaged with the engaging portion 71A.

As shown in FIG. 3, the elastic member 6A of the first embodiment is formed of a material capable of absorbing the vibration of the motor 3, for example, a rubber material capable of absorbing the vibration, and has a cylindrical shape. Escape holes 61, 61 into which the output shaft 4 is inserted are formed to have a larger diameter than the output shaft 4.

The holder 5A engaged with one end of the elastic body 6A is formed in a cylindrical shape with the motor 3 side closed.
First engagement portion 51A and bottom portion 52A that can engage with elastic body 6A
And Further, the first engagement portion 51A is
An extension 53A extends from 2A to the elastic body 6A side. A pair of engagement recesses 54A are formed at the distal end of the extension 53A at symmetrical positions with respect to the axis.

On the bottom 52A side of the extending portion 53A, a press-fit portion 55A (see FIG. 2) is formed in which the outer peripheral surface of the end of the elastic body 6A can be press-fitted and engaged. Press-fit part 5
The rotation output of the motor 3 is transmitted to the elastic body 6A by engaging the 5A with the outer peripheral surface of the end of the elastic body 6A. Therefore, the press-fit portion 55A is formed with an appropriate width so that the elastic body 6A does not come off the first engagement portion 51A of the holder 5A due to the rotation of the holder 5A.

The second engaging portion 71A of the first pinion gear 7A engaged with the other end of the elastic body 6A is formed in a cylindrical shape whose pinion side is closed, and can engage with the other end of the elastic body 6A. A second engaging portion 71A and a bottom portion 72A. Further, the second engaging portion 71A has an extending portion 73A extending from the bottom portion 72A to the elastic body 6A side. Extension part 73A
In the front end portion, a pair of engaging protrusions 74A are formed at positions symmetrical with respect to the axis so as to be engageable with the engaging recesses 54A of the first engaging portion 51A.

The engagement recess 54A of the first engagement portion 51A and the second
Normally (while the rotation output of the motor 3 is being transmitted to the first pinion gear 7A via the elastic body 6A), the engagement projection 74A of the engagement portion 71A has a predetermined gap and cannot be transmitted. And the vibration generated by driving the motor 3 is not transmitted to the first pinion gear 7A.

On the bottom 72A side of the extension 73A, there is formed a press-fit portion 75A into which the outer peripheral surface of the end of the elastic body 6A can be press-fitted and engaged. The press-fit portion 75A is engaged with the outer peripheral surface of the end of the elastic body 6A, so that the elastic body 6A
The rotation output of A is transmitted to the first pinion gear 7A. Therefore, the press-fitting portion 75A causes the elastic body 6 to rotate by the rotation of the motor 3.
A is formed with an appropriate width so that A does not come off from the first engagement portion 71A of the first pinion gear 7A.

The engagement recess 54A of the first engagement portion 51A
The wall portions 56A adjacent to the 54A are provided with concave portions 76A adjacent to the engaging convex portions 74A of the second engaging portion 71A.
An engagement state is formed with 76A, but they are arranged with a predetermined gap therebetween.

The rotation output of the motor 3 is transmitted to the elastic body 6 A configured as described above via the output shaft 4 by the rotation driving of the motor 3. The rotation output of the motor 3 is transmitted to the elastic body 6A by press-fitting engagement between the press-fitting portion 55A of the first engaging portion 51A and one end of the elastic body 6A, and the other end of the elastic body 6A and the second engaging portion 71A. The first by the engagement with the press-fit portion 75A
This is transmitted to the pinion gear 7A.

At this time, when a torque difference is generated between both ends of the elastic body 6A by the output shaft 4 of the high speed reduction and high speed rotation on the speed reduction unit side and the first pinion gear 7A constituting the speed reduction unit, the elastic body 6A itself is damaged. When the torsion easily occurs, and the torsion occurs, the press-fitted portion of the elastic body 6A swells outward,
The swelling tends to reduce the elastic body 6A along the central portion in the longitudinal direction. However, this bulge is hindered by the extending portion 53A of the first engaging portion 51A or the extending portion 73A of the second engaging portion 71A, thereby hindering the elastic body 6A from contracting in the longitudinal direction, and thus the elastic body 6AB. Will be prevented from falling off.

However, even if the elastic body 6A is damaged or falls off for some reason, the rotational output of the motor 3 drives the holder 5A via the output shaft 4 to rotate, and the first After the side surface of the engaging concave portion 54A of the engaging portion 51A moves by the gap between the engaging convex portion 74A of the second engaging portion 71A, the side surface of the engaging concave portion 54A comes into contact with the side surface portion of the engaging convex portion 74A. The joint portion 71A can be driven to rotate, and the rotation output of the motor 3 can be transmitted to the first pinion gear 7A.

The engagement recess 54A of the first engagement portion 51A
The engagement projection 74A of the second engagement portion 71A is not limited to a pair (one set) as shown in the figure, but may be a plurality of engagement projections.

The first engaging portion 51A and the second engaging portion 71A
What constitutes the engagement state with the above is not limited to the above. For example, as shown in FIG. 4, an internal gear (inner cylinder) 58 having a large number of external teeth 57 and an external gear having a large number of internal teeth 77 The outer cylinder 78 may be engaged with the outer cylinder 78.
In this case, for example, the opposing surfaces of the first engagement portion 51 and the second engagement portion 71 are formed in a flat shape, and the inner gear 58 is mounted on the distal end surface of the first engagement portion 51, and the outer gear 78 may be attached to the distal end surface of the second engaging portion 71, or may be formed integrally with each engaging portion. Further, conversely, the outer gear 78 may be attached to the first engaging portion 51 and the inner gear 58 may be attached to the second engaging portion.

A gap is formed between the outer teeth 57 of the inner gear 58 and the inner teeth 77 of the outer gear 78, and they are arranged so that rotation is not transmitted by the inner gear 58 and the outer gear 78 in a normal state. In this case, instead of the gear shape, a simple uneven portion may be provided on the outer surface of the engaging portion of the inner cylinder and the inner surface of the engaging portion of the outer cylinder.

Of course, the first engaging portion and the second engaging portion
Any configuration may be used as long as they are arranged with a gap therebetween, and the configuration is not limited to the above embodiment.

The second embodiment shows another form of the transmission structure between the elastic member 6B and the first engaging portion 51B or the second engaging portion 71B. As shown in FIG. 5, engaging grooves 62, 62 are formed on both end surfaces of a main body formed in a columnar shape. Engagement groove 6
2, 62 are protrusions 5 of the first engagement portion 51B of the holder 5B.
5 or the projection 75 of the second engagement portion 71B is engaged,
Although the shape is not particularly limited, in the embodiment,
As shown in FIG. 5, a groove is formed in one diameter direction through the center position of the elastic body 6B.

Of course, the elastic body 6B and the first engaging portion 51B
Alternatively, the pair of engagement with the second engagement portion 71B may be formed in a manner opposite to the above. For example, protrusions are provided on both end surfaces of the elastic body 6B, and the first engagement portion 51B or the second engagement portion 7 is provided.
1B may be formed with an engagement groove that can be engaged with the projection of the elastic body 6B, or provided with an engagement recess or a projection on one end surface of the elastic body 6B to form a first engagement section. 51B and 2nd
A projection may be provided on one of the engagement portions 71B, and an engagement groove may be provided on the other.

In the present embodiment, the holder 5B is formed in a cylindrical shape with the motor 3 side closed, and the first engagement portion 51B is engaged with the end of the elastic body 6B on the elastic body 6B side of the holder 5B. A pair of protrusions 511 that are formed so as to be able to engage with the engagement grooves 62 of the elastic body 6B are formed on the cylindrical bottom 52B.
511 are formed and arranged in a columnar shape toward the engagement groove 62 side of the elastic body 6B. Further, the first engagement portion 5
1B has an extension 53B extending from the bottom 52B toward the elastic body 6B. The extension portion 53B has a pair of engagement recesses 54B at its tip end symmetrically with respect to the axis.
-54B is formed.

On the other hand, the second engagement portion 71B of the first pinion gear 7B is formed in a cylindrical shape with the first pinion gear 7B side closed, and the second engagement portion 71B is formed on the elastic body 6B side of the first pinion gear 7B. A portion 71B is formed to be able to engage with an end of the elastic body 6B, and a cylindrical bottom 72B is provided with an engagement groove 6 of the elastic body 6B.
The pair of protrusions 711 that can be engaged with
B is formed and arranged in a columnar shape toward the engagement groove portion 62 side. Further, the second engaging portion 71B is
And has an extended portion 73B extending toward the elastic body 6B. A pair of engaging projections 74B, 74B are provided at the distal end of the extending portion 73B at symmetrical positions with respect to the axial center.
The engaging portions 51B are formed so as to be able to engage with the engaging concave portions 54B.

The engagement recess 54B of the first engagement portion 51B and the second
The engaging projection 74B of the engaging portion 71B is arranged in a state where transmission is impossible with a predetermined gap in a normal state, as in the above-described embodiment, and vibration generated by driving the motor 3 is generated.
It is arranged so as not to transmit to the first pinion gear 7B.

The engagement recess 54B of the first engagement portion 51B
The wall portions 56B adjacent to 54B are recessed portions 76B adjacent to the engagement convex portions 74B of the second engagement portion 71B.
An engagement state is formed with 76B, but they are arranged with a predetermined gap therebetween.

The rotation output of the motor 3 is transmitted to the elastic body 6 B configured as described above via the output shaft 4 by the rotation of the motor 3. The rotation output of the motor 3 is transmitted by engagement between the projections 511 and 511 of the first engagement portion 51B and the engagement groove 62 at one end of the elastic body 6B, and is transmitted to the second engagement groove 62 at the other end of the elastic body 6B. Protrusions 711.7 of engaging portion 71B
11 to be transmitted to the first pinion gear 7B.

At this time, when a torque difference is generated between both ends of the elastic body 6B by the output shaft 4 of high speed reduction and high speed rotation on the speed reduction unit side and the first pinion gear 7B constituting the speed reduction unit, the elastic body 6B itself is subjected to the torque difference. When the torsion easily occurs, and the torsion occurs, the engaged portion of the elastic body 6A swells outward,
The swelling tends to reduce the elastic body 6B along the central portion in the longitudinal direction. However, this bulge is hindered by the extending portion 53B of the first engaging portion 51B or the extending portion 73B of the second engaging portion 71B, and hinders the elastic body 6B from contracting in the longitudinal direction. Will be prevented from falling off.

However, even if the elastic body 6B is damaged or falls off for some reason, the rotational output of the motor 3 drives the holder 5B via the output shaft 4 to rotate, and After the side surface of the engaging concave portion 54B of the engaging portion 51B has moved by the gap between the engaging convex portion 74B of the second engaging portion 71B, the side surface of the engaging concave portion 54B abuts on the side surface portion of the engaging convex portion 74B. The joint portion 71B can be driven to rotate, and the rotation output of the motor 3 can be transmitted to the first pinion gear 7B.

The elastic body 6 and the first engaging portion 51 or the second
The transmission means with the engaging portion 71 is not limited to the above-described form, and for example, the elastic body and the first engaging portion or the second engaging portion may be attached with an adhesive, In addition, the cross-sectional shape orthogonal to the axial direction of the elastic body is changed to a non-circular shape (for example,
(A polygonal shape, a star shape, or the like), and the concave portions of the first engaging portion and the second engaging portion may have the same shape as the shape of the elastic body.

The elastic member 6 arranged as described above receives the rotation output of the motor 3 from the first engaging portion 51 of the holder 5 and transmits it to the second engaging portion 71 of the first pinion gear 7. At this time, the vibration and noise generated by the high-speed rotation of the motor 3 can be reliably transmitted to the unlatch lever 16 or the closer lever 25 via the speed reduction / drive mechanism since the elastic body 6 can absorb the vibration and noise. Also, even if the elastic body 6 is damaged or falls off for some reason, the first
Since the engagement portion 51 and the second engagement portion are engaged with each other and the rotation output of the motor 3 can be transmitted to the first pinion gear 7 on the reduction portion side, the unlatch lever 16 or the closer lever 25 can be smoothly operated. Actuation can be performed, locking or unlocking the door lock, or opening or closing the door. In addition, the first engagement portion 51 and the second engagement portion 71 are arranged with a gap when the elastic body 6 transmits the rotation output from the motor 3 normally. In addition, the drive from the motor 3 is not transmitted to the first pinion gear 7, and therefore, the vibration due to the drive of the motor 3 is not transmitted.

Although the motor device of the above-described embodiment has been described as an embodiment corresponding to a door lock device, the present invention is not limited to the door lock device. For example, a power window device, a switching device from four-wheel drive to two-wheel drive, It may be a close control device or an electric mirror device.

Further, not only a door lock device capable of performing both functions of opening and closing a door, but also a door lock device performing at least one operation of releasing or closing a door lock may be used. .

The elastic body is not limited to rubber, but may be made of, for example, a thermoplastic elastomer having rubber-like elasticity.

[Brief description of the drawings]

FIG. 1 is a plan view showing a configuration of a door lock device of the present invention.

FIG. 2 is an enlarged cross-sectional view illustrating a connected state of elastic bodies according to the first embodiment.

FIG. 3 is a perspective view showing a connected state of elastic bodies in FIG. 2;

FIG. 4 is a front view showing another engagement state between a first engagement portion and a second engagement portion.

FIG. 5 is a perspective view showing a connected state of elastic bodies according to a second embodiment.

FIG. 6 is a sectional view showing a connected state of a conventional elastic body.

FIG. 7 is a perspective view showing a connection state of a conventional elastic body.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Door lock device (motor device) 2 ... Housing 3 ... Motor 4 ... Output shaft 5 ... Holder 51 ... 1st engaging part 52 ... Bottom part 53 ... Extension part 54 ... Engaging recessed part (recessed part) 55 ... Press-fit part 511 ... projecting part 57 ... external teeth 58 ... inner gear (inner cylinder) 6 ... elastic body (elastic body) 62 ... engagement groove part 7 ... first pinion gear (reduction part) 71 ... second engagement part 72 ... bottom part 73 ... Extension part 74 ... engagement convex part (convex part) 75 ... press-fit part 711 ... projection part 77 ... internal teeth 78 ... outer gear (outer cylinder) 10 ... first reduction gear (reduction part) 11 ... intermediate pinion gear (reduction) 13) 1st output cam (drive mechanism) 14 ... 1st operating lever (drive mechanism) 15 ... unlatch lever (driven part) 20 ... 2nd reduction gear (reduction part) 21 ... 2nd output cam ( Drive mechanism section) 23: Second operating lever (drive mechanism section) 25: Closer lever (Driven portion)

Continued on the front page (72) Inventor Tsukasa Sekino 136 Washizu, Kosai-shi, Shizuoka Prefecture F-term in the Hamana Lake Electric Equipment Co., Ltd.

Claims (5)

[Claims] A motor; a speed reducing portion for reducing the rotational output of the motor; a first engaging portion disposed between the motor and the speed reducing portion and disposed on the motor side; and a speed reducing portion side. An elastic body that engages with a second engaging portion disposed at a position via a transmission means to transmit the rotation output of the motor to the speed reduction portion; and receives the rotation output of the motor decelerated by the speed reduction portion. A motor device configured to include a driving mechanism that is operated by a driving unit, and a housing that houses the motor, the deceleration unit, the elastic body, and the driving mechanism. The second engaging portion is provided with a corresponding concave / convex portion to which both engaging portions can directly engage, so that the engaging portion is not engaged in a normal state and can be engaged only in a state where transmission by the elastic body is impossible. A motor device characterized by being configured. 2. The first engagement portion and the second engagement portion,
Both are formed of a cylindrical body, and the concavo-convex portions are formed at portions opposed to each other in the longitudinal direction, and when the rotation output of the motor is transmitted to the reduction portion by the elastic body, the concave portion and the convex portion The motor device according to claim 1, wherein the portions are configured to have a gap therebetween so as to be in a state where transmission is not possible. 3. The first engagement portion and the second engagement portion,
An inner cylinder and an outer cylinder that can be fitted to the inner cylinder are formed, and the concavo-convex portions are respectively formed at portions facing an outer surface of the inner cylinder and an inner surface of the outer cylinder, and a rotational output of the motor is the elasticity. 2. The motor according to claim 1, wherein when transmitted by the body to the deceleration unit, the concave portion and the convex portion are configured to have a gap therebetween so that transmission is not possible. 3. apparatus. 4. The transmission means, wherein the elastic body is the first member.
The motor device according to claim 1, wherein the motor device is configured to be press-fitted into an engagement portion or the second engagement portion. 5. The apparatus according to claim 1, wherein the drive mechanism performs at least one operation of locking or unlocking a door lock or opening or closing a door by obtaining a rotation output of the motor. , 2, 3 or 4.