JP2002295120A - Window lifting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve dust resistance, water resistance and antifreezing properties by sealing a part constituting a decelerating mechanism into a window lifting device lifting and lowering a window and preventing the intrusion of a foreign substance and waterdrops. SOLUTION: The decelerating mechanism 4 has an outer gear 43 composed of an internal ring gear eccentrically rotated by a worm wheel 41, an inner gear 45 engaged with the outer gear 43 and axially supported to an output shaft 42 concentrically and a transmission disk 44 transmitting the revolving torque of the outer gear 43 to an inner gear 45 in the X direction and the Y direction. The worm wheel 41, the outer gear 43, the inner gear 45 and the transmission disk 44 are finished interiorly into a housing 2 in which the inside constituted of a base 201 and a cap 202 is sealed. The front end of the output shaft 42 is projected from the housing 2, and connected to an arm 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lifting device for lifting a window glass for opening and closing a window of a vehicle such as an automobile.
In particular, the present invention relates to a window raising / lowering device capable of regulating a vertical position of a window glass.

[0002]

2. Description of the Related Art As a window elevating device for an automobile, an arm connected to a window glass is swung up and down to raise and lower the window glass.
A so-called single-arm type window elevating device has been proposed. A conventional single-arm window raising and lowering device has an arcuate sector gear that rotates by meshing with a pinion that is rotated by a motor or the like, and by rotating an arm connected to the sector gear together with the sector gear, The window glass connected to the tip of the arm can be moved up and down along a body opening such as an automobile window. In such a window elevating device, when a device having a long moving range for elevating and lowering the window glass is formed, the diameter and length of the sector gear are increased accordingly, and the single-arm window elevating device is large. The problem arises.

In order to solve such a problem, the applicant of the present application has previously developed a single-arm type window elevating device using a cyclo (registered trademark) speed reduction mechanism, and has realized downsizing of the window elevating device. I have. In this proposed window lifting device, the outer gear (ring gear) and inner gear (planetary gear)
The inner gear meshed with the outer gear is rotationally driven by a motor or the like to decelerate and rotate the inner gear, and the arm connected to the window glass is engaged with the inner gear. By the combination, the arm rotates at a reduced speed and the window glass can be moved.

[0004]

However, in the developed window raising and lowering device, the inner gear is eccentrically rotated in the outer gear, so that the rotational force of the inner gear is taken out to rotate the arm. It is necessary to provide a gap for allowing eccentric rotation between the inner gear and the arm, and as a result, it is difficult to mount the inner gear in a sealed state in the device. For this reason, foreign matter such as dust may enter the apparatus from the outside through the gap, and the foreign matter may be caught between the gears, resulting in gear damage. In addition, water droplets enter the device from the outside through the gaps, causing rust in each device, or freezing in winter, making the rotation operation of each gear impossible. Is a cause of shortening.

An object of the present invention is to improve dust resistance, water resistance and freeze resistance by sealing an outer gear and an inner gear in a window elevating device to prevent foreign matter and water droplets from entering. A window elevating device is provided.

[0006]

SUMMARY OF THE INVENTION The present invention is directed to a rotating body which is driven to rotate and an output shaft which is arranged concentrically with the rotating body and is rotated to raise and lower a window glass of a vehicle such as an automobile. A window raising and lowering device including an arm that moves and a reduction mechanism that reduces the rotational operation of the rotating body and transmits the rotation to the output shaft, wherein the reducing mechanism includes an internal tooth that is eccentrically rotated with the rotation of the rotating body. An outer gear formed of a ring gear, and an inner gear meshed with the outer gear inside the outer gear and supported concentrically on the output shaft, wherein the rotating body, the outer gear, and the inner gear are The interior formed by the base and the cap is housed in a sealed housing, the tip of the output shaft projects from the housing, and the tip is attached to the arm. Characterized in that it is sintered.
Here, the rotational force of the outer gear is converted into one radial direction X.
It is preferable that a transmission disk for transmitting the inner gear to the inner gear in a direction and another radial Y direction orthogonal to the direction is provided.

According to a first aspect of the present invention, the rotating body is provided integrally with a worm wheel which is driven to rotate by an electric motor provided integrally with the housing, and is circularly eccentric with respect to the output shaft. And an eccentric ring accommodating the outer gear in the concave portion.
In a second aspect of the present invention, the rotating body is connected to a rotating operation shaft having one end protruding from the housing on the side opposite to the output shaft in the axial direction, and is eccentric with respect to the output shaft. An eccentric ring accommodating the outer gear is provided in the circular concave portion, and an operation handle rotatably driven by manual operation is connected to the one end of the rotation operation shaft.

According to the window elevating device of the present invention, the outer gear is eccentrically rotated by the rotating operation of the rotating body, the inner gear meshing with the outer gear is reduced and rotated, and the reduced rotating force is output to the output shaft. The arm can be rotated to raise and lower the window glass. At this time, the rotational force of the outer gear is split in the X and Y directions by the transmission disk and transmitted to the inner gear, so that the inner gear is driven to rotate at a substantially uniform angular speed and the window glass can be raised and lowered smoothly. To In addition, the rotation body, outer gear, inner gear, and transmission disk are housed in a sealed housing to prevent foreign matter such as dust and water droplets from entering, and improve dust resistance, water resistance, and freeze resistance. Is done.

[0009]

Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a front view of a first embodiment of a window elevating device according to the present invention. This window raising / lowering device is configured as a so-called power window device that raises / lowers window glass by an electric motor. A housing 2 of a window elevating device 1 is fixed to a vehicle body (not shown), and an electric motor 3 is attached to the housing 2. The housing 2 is provided with fixing bolts 21 at a plurality of locations. The housing 2 is fixed to a vehicle body of the automobile by a nut or the like at the fixing legs 21.
The housing 2 has a built-in speed reduction mechanism including a cyclo speed reduction mechanism as described later, and a base end 51 of the arm 5 is attached to an output side of the speed reduction mechanism. The arm 5 is configured to be reciprocated in a required angle range around the base end portion 51,
A part of a window glass 6 movable along a body opening such as a window of an automobile is connected to the distal end portion 52, and the window glass 6 is configured to be moved up and down by rotation of an arm 5. In this connection structure, a circular roller 53 is connected to the distal end portion 52 of the arm 5 here, and the circular roller 53 is engaged with an elongated hole rail 61 provided on the window glass 6,
When the arm 5 rotates, the circular roller 53 is turned into the elongated rail 6.
A configuration in which the rotation of the arm 5 is converted into a linear motion of the window glass 6 by sliding inside the window glass 1 to move the window glass 6 up and down is used. The housing 2 has the electric motor 3
Are provided with circuit components, electrode terminals, and the like for driving the device, but their description is omitted here.

FIG. 2 is a partially exploded perspective view showing the structure inside the housing 2 shown in FIG. 1, and FIG. 3 is a longitudinal sectional view of a structure attached to a vehicle body panel P in an assembled state. 4 to 6 show the AA line, BB line, and CC of FIG. 3, respectively.
It is arrow sectional drawing which follows the line, and in these figures, the characteristic part of this invention is exaggeratedly shown. 2 to 6, the housing 2 is a base 20 having a small-diameter cylindrical portion 203 and a large-diameter cylindrical portion 204 formed side by side in the axial direction.
A disk-shaped cap 202 for forming a flat circular space between the base 201 and the base 201 in a sealed state with a peripheral portion attached to the upper opening edge of the base 201 by caulking or the like; It is composed of The housing 2
Inside, the speed reduction mechanism 4 is provided as described above. That is, the hollow boss 2 is located at the center position in the base 201.
A worm wheel 41 having a hollow shaft 411 reinforced by radial ribs 412 is coaxially supported in the small-diameter cylindrical portion 203 around the hollow boss 205 so as to be rotatable around the axis. ing. A worm 32 attached to the rotating shaft 31 of the electric motor 3 attached to the base 201 is disposed inside the base 201 and external teeth provided on an outer peripheral surface of the worm wheel 41. The worm wheel 41 is rotated around the hollow boss 205 by the worm 32 when the electric motor 3 is driven and the rotary shaft 31 is rotated. The worm wheel 41 has a large-diameter cylindrical portion 2 of the base 201.
An eccentric ring portion 414 disposed in the inside 04 is provided integrally. The outer peripheral surface of the eccentric ring portion 414 is formed in a circular shape concentric with the hollow boss 205 and the hollow shaft portion 411, while the inner peripheral surface is a circular shape eccentric with the hollow boss 205 and the hollow shaft portion 411. Is formed.

The output shaft 42 is provided inside the hollow boss 205.
Is fitted into a fitting hole 511 opened at a base end portion 51 of the arm 5 at a rectangular fitting portion 421 formed at an outer end of the base 201. 5 are integrally connected in the direction around the axis. Further, a concave portion 422 is formed at an axial center position on an end surface of the output shaft 42 facing the base opening side, and the concave portion 422 is fitted to a projecting portion 221 provided on the inner surface of the cap 202. Bearing supported. A pair of X-side guides are provided on the inner surface of the cap 202 along one radial direction (hereinafter, this direction is referred to as Y direction) and in a direction perpendicular thereto (hereinafter, referred to as X direction). The part 222 is formed integrally.

An outer gear 43 is provided in a space surrounded by the eccentric ring portion 414 of the worm wheel 41 and the cap 202. The outer gear 43 is formed in an annular shape having an outer shape corresponding to the eccentric circular shape of the eccentric ring portion 414, and is formed as an internal gear with internal teeth 431 formed along the inner circumference. Further, a pair of Y-side guide portions 432 facing the Y direction along the X direction is integrally formed on the surface of the outer gear 43 facing the cap 202. The X-side guide portion 222 of the cap 202 and the Y-side guide portion 432 of the outer gear 43
In the area surrounded by the X-side guide portion 222 and the Y-side guide portion 432, a rectangular plate-shaped transmission disk 44 is provided. Both edges of the disc 44 in the X direction are the X
The two side pieces in the Y direction slide in contact with the side
It is in sliding contact with the side guide portion 432. A center hole 441 having a diameter sufficient to allow the output shaft 42 to pass therethrough is opened at the center of the transmission disk 44.

Inside the outer gear 43, an inner gear 45 and a stopper 46 are provided side by side in the axial direction. The inner gear 45 is connected to the outer gear 43.
External teeth 45 along the outer peripheral surface with an outer diameter smaller than the inner diameter of
1 is formed as a spur gear, and a part of its circumference is meshed with the internal teeth 431 of the outer gear 43, and a non-circular hole provided at the center thereof (here, a circular shape with both side edges cut away). Hole 452 is connected to the end 423 of the output shaft 42 on the base opening side, and is prevented from falling off by the C-ring 47 so that the output shaft 4
2, so that it can be rotated together. The stopper 46 is formed as an annular gear having the same outer diameter as the inner diameter of the outer gear 43 and having outer teeth 461 on its outer peripheral surface, and is meshed with the inner teeth 431 of the outer gear 43. It is configured to be driven to rotate integrally with the outer gear 43. Further, a stopper piece 4 protruding in the inner diameter direction is formed on a part of the inner circumferential surface of the stopper 46.
A stopper pin 453 is formed on a part of the circumference of the inner gear 45 so as to protrude in the axial direction toward the stopper 46, and the stopper pin 453 is rotated with the rotation of the inner gear 45. The stopper piece 462 is circumferentially collided with the stopper piece 462.

According to the window elevating device having the above-described structure, the output shaft 42, the outer gear 43, and the inner gear 45 constitute a cyclo reduction mechanism that forms the reduction mechanism 4. Therefore, when the electric motor 3 is driven and the worm wheel 41 is rotated around the hollow boss 205 via the worm 32, the rotational force is transmitted to the outer gear 43 inside the eccentric ring portion 414 integrated therewith. You. As a result, the outer gear 43 is eccentrically rotated around the hollow boss 205 in a state where the outer gear 43 meshes with the inner gear 45 at a part of the circumference, and the eccentric rotation causes the inner gear 4 to rotate.
5 is rotated integrally with the output shaft 42, and a torque is output to the output shaft 42. That is, the outer gear 43
Is revolved around the inner gear 45 and the inner gear 4
5 rotates integrally with the output shaft 42. Here, the number of teeth of the inner gear 45 is ZA,
Is the number of teeth of the inner gear 45 when the outer gear 43 makes one rotation, that is, the output shaft 42
The rotation speed N of is as follows: N = (ZA−ZB) / ZA Therefore, by appropriately setting the number of teeth ZA of the inner gear 45 and the number of teeth ZB of the outer gear 43, a cyclo reduction mechanism having an arbitrary reduction ratio is realized.

At this time, since the transmission disk 44 of the outer gear 43 is in sliding contact with the Y-side guide portion 432, the transmission disk 44 is slidable only in the X direction. Since the worm wheel 41 is slidable only in the Y direction by being in sliding contact with the X-side guide portion 222 formed on the cap 202, the rotational force of the worm wheel 41 is divided into the outer direction while being temporally divided in the X direction and the Y direction. This is transmitted to the gear 43. Therefore, the eccentric ring portion 414 of the worm wheel 41 and the outer gear 43 form a shaft coupling structure close to a so-called Oldham coupling via the transmission disk 44,
As a result, the rotational angular velocity of the inner gear 45 rotated by the outer gear 43 is made substantially constant, and the output shaft 42 and the arm 5 connected thereto can be rotated at a substantially constant angular velocity. As a result, the arm 5 is reciprocated at a substantially constant angular velocity by the forward and reverse rotations of the electric motor 3, and the window glass 6 connected to the distal end 52 of the arm 5 is moved along the window of the automobile. It can move up and down and open and close the windows of the car.

On the other hand, when the window glass 6 is moved up and down by the arm 5, the inner gear 45 is rotated inside the outer gear 43 as described above. At this time, the inner gear 45 is projected from the side surface of the inner gear 45 in the axial direction. The stopper pin 453 that has been moved is moved along the inner peripheral surface of the outer gear 43. When the inner gear 45 is rotated in one direction and rotated to a predetermined rotation position, the stopper pin 453 is connected to one of the stopper pieces 462 provided on the inner peripheral surface of the stopper 46 as shown in FIG. You will be hit by the side. Since the stopper 46 is meshed with the outer gear 43 and is integral with the outer gear 43 in the rotation direction, when the stopper pin collides with the stopper piece 462, the subsequent rotation of the outer gear 43 and the inner gear 45 is restricted. Therefore, the rotation of the arm 5 is also restricted. Thereby, the window glass 6
By setting the positions of the stopper pin 453 and the stopper piece 462 in correspondence with the position where the downward movement of the window glass is to be restricted, the rotation position of the arm 5, that is, The lowering position can be regulated. Therefore, when this window elevating device is applied to an automobile, the lowering position of the windowpane 6 can be regulated without providing a regulating member for regulating the downward movement of the windowpane 6 on the body side of the automobile. It is possible, and the body structure of the car is not complicated.

Since the stopper 46 can be engaged with the outer gear 43 at an arbitrary circumferential position, by changing the circumferential position, the stopper piece 462 provided on the stopper 46 is changed. Change the circumferential position,
By changing the rotation restricting positions of the inner gear 45 and the outer gear 43, it is possible to change the turning position of the arm 5, that is, the restricting position on the lower side of the window glass 6. Therefore, even when the window dimensions are different due to a difference in the type of automobile, etc., it is possible to cope with this only by adjusting the circumferential position when the stopper 46 is installed. The lowering position of the window glass can be regulated.

Here, stopper pieces 462 provided on the stopper 46 are provided at two different places in the circumferential direction, and one of the stopper pieces collides with the stopper pin 453 from one direction when the inner gear 45 is rotated in one direction. If the stopper pin 453 is configured to collide from the other direction when the inner gear 45 is rotated in the opposite direction, the other stopper piece regulates the rotation position in both rotation directions of the inner gear 45. It becomes possible. Therefore, this is effective when it is necessary to regulate each of the upper and lower positions of the window glass as in a hard-top type automobile. In this case, if the moving dimensions of the window glass differ depending on the type of the vehicle, a plurality of types of stoppers in which the stopper pieces are formed at different circumferential positions are prepared, and according to the type of the vehicle to be equipped. The stopper may be selected and mounted. In addition,
The stopper does not necessarily need to have external teeth over the entire area of the outer peripheral surface, and the number of teeth can be appropriately adjusted according to the required strength, and when reducing the number of teeth, the stopper should be in an area equally divided in the circumferential direction of the stopper. Only the external teeth may be formed.

As described above, according to the window elevating device of the first embodiment, the outer gear 43 and the inner gear 45 constituting the cyclo reduction mechanism 4 are connected to the base 201 and the cap 2.
02 can be housed in the hermetically sealed housing 2, and only the end of the output shaft 42 protrudes from the housing 2. Therefore, the housing 2
It is possible to prevent foreign matter and water droplets from entering the inside, and to prevent gear damage due to foreign matter being caught, rust and freezing caused by water droplets, and improve the reliability of the window lifting device Is possible. In addition, a transmission disk 44 for rotating the inner gear 45 at a uniform angular velocity is disposed between the Y-side guide portion 432 of the outer gear 43 and the X-side guide portion 222 of the cap 202. Therefore, the axial dimension does not increase unnecessarily,
It is also possible to reduce the thickness of the window elevating device.

FIG. 7 is a partially exploded perspective view of a second embodiment in which the present invention is applied to a manual window elevating device in which a drive shaft is rotationally driven by a handle which is manually rotated.
FIG. 8 is a longitudinal sectional view of the assembled state. Here, since the basic configuration of the second embodiment is the same as that of the first embodiment, the same reference numerals are given to the equivalent parts. The housing 2 includes a base 201 and a cap 202 which is attached by caulking to an opening peripheral portion of the base 201,
The inside is in a sealed state. A hollow boss 205 is provided on the base 201, and the output shaft 42 is inserted into the hollow boss 205, and the arm 5 is integrally connected to an outer end of the output shaft 42. A spline 424 is formed at the inner end of the output shaft 42,
Spline hole 45 opened at the center of the inner gear 45
4 are splined together so as to be integral in the rotation direction,
In addition, the C ring 47 is used to prevent slipping.

A shaft hole 206 is opened at the center of the cap 202 concentric with the hollow boss 205, and the rotary operation shaft 48 is inserted into the shaft hole 206 while maintaining a liquid-tight state. Have been. A spline 481 is formed at an outer end of the rotation operation shaft 48, and an operation handle 7 for performing a rotation operation when opening and closing the window can be connected. A non-circular plate 482 is integrally formed at the inner end of the rotary operation shaft 48, and is integrally connected to the eccentric rotary plate 49 provided inside the housing 2 in the circumferential direction. The eccentric rotary plate 49 is formed in a shallow dish shape having a circular concave portion 491 on the inner surface side, and the concave portion 491 is formed by the rotary operation shaft 48 and the hollow boss 205.
The eccentric ring portion 492 similar to that of the first embodiment is formed.

In the inside of the eccentric ring portion 492, there is provided an outer gear 43 having an outer diameter equal to that of the concave portion 491 of the eccentric ring portion 492 and having inner teeth formed on its inner peripheral surface. The inner gear 45 is meshed with a part of the circumference thereof. The outer gear 43 has a pair of Y
The side guide portion 432 is formed integrally. A pair of X-side guides 222 are integrally formed on the inner surface of the base 201 facing the Y-side guides 4.
In a region sandwiched between the X. 32 and the X-side guide 222, a square plate-shaped transmission disk 44 having a shaft hole 441 that is sufficiently larger than the outer diameter of the hollow boss 205 is provided on each side of the guide 432, The interior is mounted in sliding contact with 222. A stopper 46 is provided inside the outer gear 43 at a position adjacent to the inner gear 45 in the axial direction, and external teeth 461 formed at a plurality of positions on the peripheral surface of the stopper 46 are provided on the outer gear 43. It is meshed with the internal teeth 431 of the gear 43. Further, a stopper piece 462 is integrally provided on a part of the circumference of the inner peripheral surface of the stopper 46, and the inner gear 45
Stopper projections 4 protruding in the outer diameter axis direction on a part of the circumference of
55 is configured to be able to collide in the circumferential direction.
This is the same as the embodiment.

According to the window raising and lowering device of the second embodiment having the above-described configuration, the rotation operation shaft 48, the eccentric rotation plate 49, the outer gear 43, and the inner gear 45 constitute the reduction mechanism 4 composed of a cyclo reduction mechanism. You. Therefore, when the operation handle 7 is turned to rotate the rotation operation shaft 48,
The eccentric rotary plate 49 integrally connected thereto is rotated, and an eccentric ring portion 491 formed on the eccentric rotary plate 49 is formed.
, The rotational force is transmitted to the outer gear 43. As a result, the outer gear 43 is eccentrically rotated with respect to the output shaft 42 while meshing with the inner gear 45, and the inner gear 45 meshed with the outer gear 43 rotates with the output shaft 42 due to the eccentric rotation. Then, a rotational force is output to the output shaft 42. Thus, as in the first embodiment, a cyclo reduction operation capable of rotating the output shaft while reducing the rotation speed of the rotary operation shaft at an arbitrary reduction ratio is realized.

In this case, the outer gear 4
Reference numeral 3 denotes a transmission disk 44 slidably in contact with the Y-side guide portion 432 so that the transmission disk 44 is slidable only in the X direction, and the transmission disk 44 is connected to the X-side guide portion 222 formed on the base 201. Since the eccentric rotary plate 49 is slidably slidable only in the Y direction, the rotational force of the eccentric rotary plate 49 is transmitted to the outer gear 43 in a state of being divided with time in the X direction and the Y direction. As a result, it is possible to make the rotation angular velocity of the inner gear 45 rotated by the outer gear 43 substantially constant, and to rotate the output shaft 42 and the arm 5 connected thereto at a substantially constant angular velocity. This is the same as in the first embodiment. As a result, the arm 5 is reciprocated at a substantially constant angular velocity by the forward and reverse rotations of the rotary operation shaft 48, and the arm 5
The window glass 6 connected to the front end 52 of the vehicle can be moved up and down along the window of the vehicle, and the window of the vehicle can be opened and closed.

As described above, according to the window raising and lowering device of the second embodiment, the outer gear 43 and the inner gear 45 constituting the speed reduction mechanism 4 are provided inside the sealed housing 2 formed by the base 201 and the cap 202. Can be stored. Therefore, it is possible to prevent foreign matter and water droplets from entering the housing 2 and prevent gear breakage due to foreign matter being caught, rust and freezing caused by water droplets, and reliability of the window elevating device. Can be improved. In the second embodiment, the sealing operation is slightly lower than in the first embodiment because the rotary operation shaft 48 is inserted through the cap 202, but the cap 202 is directed to the vehicle interior. Therefore, foreign matter and water droplets are hardly penetrated from this portion, and there is no particular problem. Transmission disk 44 for rotating inner gear 45 at equal angular velocity
To the Y-side guide portion 432 of the outer gear 43 and the base 2
Since it is disposed between the X-side guide portion 222 and the X-side guide portion 222, the dimension in the axial direction does not increase unnecessarily, and the thickness of the window elevating device can be reduced.

Here, in the configuration of the second embodiment, the eccentric rotary plate 49 can be formed integrally with the worm wheel as in the first embodiment, and can be rotated by an electric motor. In this case, as in the first embodiment, application to a power window device is also possible.

In the first embodiment, a stopper pin is provided upright on the inner gear as a stopper mechanism for regulating the rotation angle of the arm. However, similar to the stopper projection 455 of the second embodiment, The configuration may be any. FIG. 9 is an exploded perspective view of an example of the inner gear and the stopper, and FIG. 10 is a plan view of the assembled state. That is,
On the upper surface of the inner gear 45, a circular thick portion 456 having a thicker region around the non-circular hole 452 is integrally formed, and a part of the circumference of the thick portion 456 protrudes in the radial direction to form a stopper. A projection 457 is formed. On the other hand, the stopper 46 is formed in a ring shape, has external teeth 461 on the outer peripheral surface, and is configured to mesh with the internal teeth 431 of the outer gear 43 as in the first embodiment. The surface is formed as a stopper cam 463 whose diameter dimension changes along the circumferential direction. The cam shape of the stopper cam 463 includes a large-diameter region 463a having the largest diameter dimension occupying approximately 1/4 in the circumferential direction, and a medium diameter having a slightly smaller diameter dimension formed on both circumferential sides of the large-diameter region 463a. Region 463
b and a small-diameter region 463c having the smallest diameter occupying almost half of the opposite side in the circumferential direction sandwiched between the middle-diameter regions 463b.

According to this configuration, as shown in FIG.
When the stopper projection 457 is rotated on the inner peripheral surface of the stopper 46, that is, in the stopper cam 463 with the rotation of the inner gear 45, the tip end of the stopper projection 457 moves on the trochoid trajectory as shown by a broken line in FIG. .
Then, the stopper projection 45 rotates by a predetermined rotation angle.
7 moves in the outer diameter direction, the leading end surface of the
Collision occurs in the outer diameter direction with respect to 63b, and the subsequent rotation of the stopper projection 457, that is, the rotation of the inner gear 45, is restricted. At this time, the stopper projection 45
7 restricts rotation by colliding with the middle diameter region 463b in the radial direction, which is the protruding direction, so that the mechanical resistance of the stopper protrusion 457 can be increased, the deformation of the stopper protrusion 457 is prevented, and the stopper protrusion 457 is stabilized. It is possible to exhibit the stopper function. Needless to say, the large-diameter region 463a is provided as a relief so that the stopper projection 457 does not interfere with the stopper cam 463 when the stopper 46 is eccentrically rotated together with the outer gear 43 with respect to the inner gear 45. Further, the stopper cam 4
The small-diameter region 463c of 63 is provided to increase the radial width of the stopper 46 to increase the mechanical strength of the stopper 46. Even when a strong external force is applied to the inner gear 45 through the arm 5, the stopper cam 463 is formed. This is advantageous in preventing breakage at the end. In this configuration, when restricting the rotational position of the inner gear 45 in both directions, the diameter of the middle diameter region 463b on both sides may be appropriately set. It goes without saying that also in the stopper of the second embodiment, the stopper piece can be configured as such a stopper cam.

[0029]

As described above, the window raising and lowering device of the present invention constitutes a speed reduction mechanism for reducing the rotational force of a rotationally driven rotating body such as a worm wheel or an eccentric rotating plate and transmitting the rotational force to the output shaft. Gear, an inner gear, a transmission disk, etc., are provided in a housing, which is composed of a base and a cap together with a rotating body and is internally sealed, and a tip portion of an output shaft projects from the housing to form a window glass. The outer gear is eccentrically rotated by the rotating operation of the rotating body, and the inner gear meshing with the outer gear is decelerated and rotated,
The reduced rotation force is output to the output shaft, and the arm is rotated to enable the vertical movement of the window glass. No foreign matter such as dust or water drops enter the housing, and the dust and water resistance is maintained. Thus, it is possible to obtain a highly reliable window elevating device having excellent freezing resistance.

[Brief description of the drawings]

FIG. 1 is a front view of a first embodiment of a window elevating device according to the present invention.

FIG. 2 is a partially exploded perspective view of the window elevating device of FIG.

FIG. 3 is a longitudinal sectional view of the window elevating device of FIG. 1 in an assembled state.

4 is a sectional view taken along the line AA in FIG. 3;

FIG. 5 is a sectional view taken along line BB of FIG. 3;

FIG. 6 is a sectional view taken along the line CC in FIG. 3;

FIG. 7 is a partially exploded perspective view of a second embodiment of the window elevating device according to the present invention.

8 is a longitudinal sectional view of the window elevating device of FIG. 7 in an assembled state.

FIG. 9 is an exploded perspective view of another embodiment of the stopper.

FIG. 10 is a plan view showing the assembled state of the stopper of FIG. 9;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Window raising / lowering apparatus 2 Housing 3 Electric motor 4 Reduction mechanism (cyclo reduction mechanism) 5 Arm 6 Window glass 7 Operation handle 31 Motor rotation shaft 32 Worm 41 Warm wheel 42 Output shaft 43 Outer gear 44 Transmission disk 45 Inner gear 46 Stopper 47 C-ring 48 Rotating operation shaft 49 Eccentric rotating plate 201 Base 202 Cap 222 X-side guide 414 Eccentric ring 432 Y-side guide 492 Eccentric ring

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[Procedure amendment]

[Submission date] August 9, 2001 (2001.8.9)

[Procedure amendment 1]

[Document name to be amended] Drawing

[Correction target item name] Figure 2

[Correction method] Change

[Correction contents]

FIG. 2

Continued on the front page (72) Inventor Masaaki Sato 500 Kitawaki, Shimizu-shi, Shizuoka Pref. Koito Manufacturing Co., Ltd. Shizuoka Factory F-term (reference)

Claims (4)

[Claims] A rotating body which is driven to rotate, an arm which is connected to an output shaft arranged concentrically with the rotating body and which is turned to raise and lower a window glass of a vehicle such as an automobile; In a window elevating device having a speed reduction mechanism that reduces the rotational operation and transmits the rotation to the output shaft, the speed reduction mechanism includes an outer gear including an internal gear that is eccentrically rotated with the rotation of the rotating body. An inner gear meshed with the outer gear inside the outer gear and supported concentrically on the output shaft; and
The outer gear and the inner gear are housed in a housing in which an inner portion formed of a base and a cap is sealed, and a distal end portion of the output shaft projects from the housing, and the distal end portion is attached to the arm. A window elevating device which is connected. 2. A transmission disk for transmitting the rotational force of the outer gear to the inner gear in one radial X direction and another radial Y direction orthogonal to the outer gear, wherein the outer gear is in the X direction. The housing integrally includes a pair of Y-side guide members facing each other in the Y direction, the housing integrally includes a pair of X-side guide members facing each other in the X direction along the Y direction. The window raising / lowering device according to claim 1, wherein the window raising / lowering device is formed of a rectangular plate-shaped member movable in the X direction and the Y direction by slidingly contacting the respective guide members between the two guide members. 3. The rotating body is provided integrally with a worm wheel that is driven to rotate by an electric motor that is provided integrally with the housing, and the outer gear is provided in a circular recess eccentric to the output shaft. The window raising / lowering device according to claim 1, further comprising a stored eccentric ring portion. 4. The rotating body is connected to a rotating operation shaft having one end protruding from the housing on the side opposite to the output shaft in the axial direction, and the rotating body is provided in a circular recess eccentric to the output shaft. The window according to claim 1 or 2, further comprising an eccentric ring portion accommodating an outer gear, wherein an operation handle rotatably driven by a manual operation is connected to the one end of the rotation operation shaft. lift device.