JP3327876B2 - Power window equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power window device for opening and closing a window glass of a vehicle door.

[0002]

2. Description of the Related Art For example, a motor is used as a drive source in a power window device for moving a window glass of a vehicle up and down.

[0003] Some of such power window devices have a so-called anti-jamming function for preventing the occupant's body or foreign matter from being unnecessarily jammed in the window glass. In a power window device having this kind of pinching prevention function, a limit switch is arranged at a predetermined position of a door, and based on a signal from the limit switch and a motor lock current, whether or not a foreign object has been pinched in the window glass. To control the movement of the window glass, that is, the rotational position of the motor,
And a special commutator to detect the number of rotations of the armature and determine whether or not the motor has been caught based on this number of rotations detection signal (pulse number or pulse width of the pulse signal) to control the rotational position of the motor. There are things.

However, in such a power window device (motor rotation position detecting mechanism), when assembling a motor or a window regulator, complicated adjustment of an assembling position and complicated resetting after assembling are indispensable. In addition, when the anti-jamming mechanism is configured, other parts such as the control device have the disadvantages of high cost and poor accuracy.

Therefore, the present applicant has already proposed a position detecting device for a moving body capable of solving such a drawback (for example, Japanese Patent Application No. Hei 6-175873).

The moving body position detecting device is provided integrally with a planetary gear set including a ring gear rotatably held by a cover plate of the device and a planetary gear meshing with the ring gear, and a ring gear of the planetary gear set, and rotates together with the ring gear. A switch unit comprising a moving contact to be fixed and a fixed contact fixed to the cover plate and capable of contacting the moving contact;
Alternatively, it is configured to include a clutch mechanism or the like that interrupts transmission of rotational force in the forward direction from the moving body (motor output shaft) to the ring gear. As a result, when used in a power window device, the position of the window glass can be detected with high accuracy, and not only can its movement be controlled, but also the initial position can be set without complicated adjustment. This can be realized with a simple structure at low cost.

In the above-described position detecting apparatus for a moving body, the apparatus itself has a function of mechanically storing a predetermined reference position of the moving body (automatic setting of an initial position). If the assembly state (procedure) to the moving body is erroneously set, the original function may not be able to be exhibited. Therefore, there is room for further improvement in this respect.

That is, for example, a description will be given of a device assembling adjustment procedure in a case where this position detecting device is used in a power window device. First, at the time when the position detecting device is mounted on the vehicle body, the power window device driving motor is once sufficiently moved in the forward direction. Rotate. Thus, when the motor reaches a predetermined rotation position (a predetermined reference position of the window glass), the rotation of the ring gear of the planetary gear set in the forward direction is stopped. When the motor is further rotated in this state, the transmission of the rotational force in the positive direction from the motor output shaft to the ring gear of the planetary gear set is cut off by the operation of the clutch mechanism, and only the planetary gear revolves. By the above operation, the initial state in which the switch section is operated, that is, the initial state in which the predetermined reference position of the window glass is mechanically stored is automatically set.

However, here, if the motor is already at the predetermined rotational position (the window glass is already at the predetermined reference position)
If this position detection device is assembled in the state of reaching, the motor cannot be rotated sufficiently thereafter,
In other words, the rotation of the ring gear of the planetary gear set in the forward direction is not prevented even though the motor has reached the predetermined rotation position (the window glass is at the predetermined reference position).
There is a possibility that the initial state in which the switch section is operated (that is, the initial state in which the predetermined reference position of the window glass is mechanically stored) may not be achieved.

[0010]

In consideration of the above fact, the present invention can detect the position of the window glass with high accuracy and can set the initial position of the position detecting device without complicated adjustment. To obtain a power window device that not only can realize this at a low cost with a simple structure, but also can surely assemble the position detecting device in a regular assembling state and reliably maintain its original function. Is the purpose.

[0011]

According to a first aspect of the present invention, there is provided a power window device which is operated by rotation of a motor output shaft connected to a drive unit of a window regulator. It has a contact that is electrically connected and set corresponding to a predetermined rotational position of the motor output shaft, interlocks with the motor output shaft, and in a state where the contact is operated, the rotational force from the motor output shaft is A ring gear that is blocked from transmitting and is prevented from rotating in the forward direction, and is held via rubber in a holding hole provided in a cover plate of the device, and the rotation of the motor output shaft is performed by pressing the ring gear from the outside. Initial position setting means for forcibly preventing the rotation of the ring gear regardless of the position.

[0012] In the power window device according to the first aspect,
When the ring gear is rotated in conjunction with the rotation of the motor output shaft and the motor output shaft reaches a predetermined rotation position (that is, when the window glass reaches a predetermined reference position),
The contact provided on the ring gear is actuated,
A predetermined output position of the motor output shaft, that is, the window glass is detected.

On the other hand, when the contact provided on the ring gear is operated, transmission of the rotational force in the forward direction from the motor output shaft to the ring gear is interrupted. That is, once the contacts have been activated, even if the motor output shaft rotates in the forward direction, the ring gear is not moved and the operating state of the contacts is maintained. In other words, once the motor output shaft is sufficiently rotated once in the forward direction, the initial state in which the contacts are activated is automatically set.

Therefore, in this power window device, the motor output shaft is fully rotated once in the forward direction at the time of assembling to the vehicle body, so that the contact is automatically set to an initial state in which the contact is operated. The initial position can be easily set without complicated adjustment of the mounting position or complicated resetting after the mounting. Also, in a configuration in which the number of rotations of the armature of the motor for driving the power window device is detected by using a Hall IC or the like to detect the motor rotation axis, that is, the moving position of the window glass, a counter is indispensable in the control circuit. However, this power window device can accurately determine the position only by a single ON / OFF signal, eliminates the need for a counter in the power window control circuit, and reduces the cost.

Further, in the power window device according to the first aspect, the ring gear can be forcibly prevented from rotating by pressing the ring gear from the outside by the initial position setting means. For this reason, even if the ring gear is assembled in a state where the motor output shaft has already reached the predetermined reference position, the motor output shaft is temporarily moved in the reverse direction while the rotation of the ring gear is blocked, and thereafter, If the motor output shaft is rotated in the forward direction in a state where the ring gear can be rotated again, the motor automatically returns to the initial state in which the contacts operate (that is, the initial state in which the predetermined reference position of the motor output shaft is memorized mechanically). Is set.

That is, in this power window device,
If the motor is operated by using the operation of the initial position setting means in combination with the vehicle body, it is possible to reliably set the motor to the initial state in which the contacts are operated. In this way, it is possible to reliably assemble the vehicle into the vehicle body in a proper assembling state, and to reliably maintain the original functions.

Furthermore, since the initial position setting means is held via rubber in the holding hole provided in the cover plate of the apparatus, the sealing property is ensured, and foreign matter adheres to the contact point of the ring gear, resulting in poor contact. Inconveniences, such as becoming, are prevented.

A power window device according to a second aspect of the present invention is a power window device that is operated by rotation of a motor output shaft connected to a drive unit of a window regulator, and is electrically connected to a power window control circuit. It has a contact set corresponding to a predetermined rotational position of the motor output shaft, and is linked with the motor output shaft, and when the contact is activated, transmission of the rotational force from the motor output shaft is interrupted to correct the rotation. A ring gear that is prevented from rotating in the direction, an initial position setting unit that is covered with rubber, and that forcibly prevents rotation of the ring gear regardless of the rotational position of the motor output shaft by pressing the ring gear from the outside. , Are provided.

In the power window device according to the second aspect,
When the ring gear is rotated in conjunction with the rotation of the motor output shaft and the motor output shaft reaches a predetermined rotation position (that is, when the window glass reaches a predetermined reference position),
The contact provided on the ring gear is actuated,
A predetermined output position of the motor output shaft, that is, the window glass is detected.

On the other hand, when the contact provided on the ring gear is operated, transmission of the rotational force in the forward direction from the motor output shaft to the ring gear is interrupted. That is, once the contacts have been activated, even if the motor output shaft rotates in the forward direction, the ring gear is not moved and the operating state of the contacts is maintained. In other words, once the motor output shaft is sufficiently rotated once in the forward direction, the initial state in which the contacts are activated is automatically set.

Therefore, in this power window device, the motor output shaft is fully rotated once in the forward direction at the time of assembling to the vehicle body, so that the initial state in which the contacts are activated is automatically set. The initial position can be easily set without complicated adjustment of the mounting position or complicated resetting after the mounting. Also, in a configuration in which the number of rotations of the armature of the motor for driving the power window device is detected by using a Hall IC or the like to detect the motor rotation axis, that is, the moving position of the window glass, a counter is indispensable in the control circuit. However, this power window device can accurately determine the position only by a single ON / OFF signal, eliminates the need for a counter in the power window control circuit, and reduces the cost.

Further, in the power window device according to the second aspect, the rotation can be forcibly prevented by pressing the ring gear from the outside by the initial position setting means. For this reason, even if the ring gear is assembled in a state where the motor output shaft has already reached the predetermined reference position, the motor output shaft is temporarily moved in the reverse direction while the rotation of the ring gear is blocked, and thereafter, If the motor output shaft is rotated in the forward direction in a state where the ring gear can be rotated again, the motor automatically returns to the initial state in which the contacts operate (that is, the initial state in which the predetermined reference position of the motor output shaft is memorized mechanically). Is set.

That is, in this power window device,
If the motor is operated by using the operation of the initial position setting means in combination with the vehicle body, it is possible to reliably set the motor to the initial state in which the contacts are operated. In this way, it is possible to reliably assemble the vehicle into the vehicle body in a proper assembling state, and to reliably maintain the original functions.

Furthermore, since the initial position setting means is covered with rubber, the sealing property is ensured, and problems such as foreign matter adhering to the contact point of the ring gear and causing poor contact are prevented.

According to a third aspect of the present invention, in the power window device according to the first or second aspect, the initial position setting means presses the ring gear to forcibly prevent rotation. It is characterized by being a pressing member.

In the power window device according to the third aspect,
The ring gear is pressed by the pressing operation of the ring gear pressing member, and the rotation can be forcibly prevented. Therefore, the structure is simple and the operability is improved.

[0027]

FIG. 1 is an exploded perspective view of a position detecting device 30 applied to a power window device according to a first embodiment of the present invention. . 2 is an overall perspective view of the position detecting device 30 and a motor 10 for a power window device to which the position detecting device 30 is applied. FIG. 3 is a plan view of the position detecting device 30. It is shown. FIG. 4 is a sectional view of the position detecting device 30 and the motor 10.

The rotary gear wheel 16 has a shaft 20 as a motor output shaft rotatably supported by a cover 18 of the gear portion 10B. For this reason, when the motor unit 10A operates and the rotating shaft 12 rotates, the rotating force is transmitted to the rotating gear wheel 16 via the worm gear 14 and the shaft 20 is rotated.
Is designed to rotate. An output fitting portion 22 is provided at the tip of the shaft 20, and is configured to be connected to a drive portion (not shown) of the window regulator. In the first embodiment, for example, the window glass is set to move one stroke when the shaft 20 (output fitting portion 22) rotates three to 4.5 times.

On the other hand, a position detecting device 30 is mounted on the surface of the gear portion 10B opposite to the output fitting portion 22.

As shown in detail in FIG.
Is provided with a base plate 34 and a cover plate 36, both of which are formed in a thin, substantially cylindrical shape. The base plate 34 has a through hole 38 at the center thereof, and a projection 40 is formed on the inner peripheral surface of the cover plate 36 so as to protrude in the axial direction.

The position detecting device 30 has a connecting shaft 42. One end of the connecting shaft 42 is integrally connected to the shaft 20 of the rotating gear wheel 16 and always rotates integrally with the shaft 20, and the other end is detected through a through hole 38 formed in the base plate 34. Device 30
(The base plate 34 and the cover plate 36). A sun gear 44 constituting a planetary gear set is provided near the other end of the connection shaft 42, and meshes with a planetary gear 54 described later.

Around the connecting shaft 42, a ring gear 46 constituting a planetary gear set is disposed so as to face the sun gear 44. This ring gear 46 covers the cover plate 3.
6 and rotatably accommodated in the ring gear 4.
A flange portion 48 is formed integrally with the periphery of 6. The flange portion 48 is a conductive plate integrally formed with the ring gear 46, and movable contact points 50 </ b> A and 50 </ b> B are provided on a part of the peripheral surface opposite to the cover plate 36. The moving contacts 50A and 50B are non-conductive portions formed in a two-stage arc shape, and are formed so as to be substantially flush with the flange portion 48. Further, a protrusion 52 is provided on a part of the peripheral edge of the flange portion 48.
Are formed to protrude. The projection 52 corresponds to the projection 40 formed on the cover plate 36 described above, and the ring gear 46 (flange 48) rotates in the forward direction (the direction of arrow A in FIG. 1) to reach a predetermined rotation position. At the time of the protrusion 5
2 is in contact with the projection 40 (the state shown in FIG. 5), and further rotation of the ring gear 46 in the forward direction is prevented.

Two planetary gears 54 are arranged on the inner peripheral portion of the ring gear 46 between the sun gear 44 and the sun gear 44. These planetary gears 54 are rotatably supported by a carrier 56 and mesh with both the ring gear 46 and the sun gear 44. That is, the sun gear 44, the ring gear 46 and the planetary gear 5
Reference numeral 4 denotes a planetary gear set, which can reduce and transmit the rotation of the connecting shaft 42 (that is, the shaft 20). For example, the carrier 56 is held and the planetary gear 5 is held.
In a state where the revolution of the connecting shaft 4 is blocked, the connecting shaft 4
2 (i.e., the shaft 20) is reduced to reduce the ring gear 4
6 can be transmitted.

Here, in the first embodiment,
Sun gear 44, ring gear 46 and planetary gear 54
The reduction ratio of the planetary gear set made of 5.2 is set to 5.2: 1.
The ring gear 46 is configured not to make more than one rotation in any window glass (while 4 rotates 3 to 4.5).

The reduction ratio of the planetary gear set is set at 5.
The ratio is not limited to 2: 1, but can be set as desired.

The sun gear 44 and the ring gear 4 having the above constructions
The planetary gear set composed of the planetary gears 6 and the planetary gears 54 is covered by the cover plate 36 and held by the protection plate 200 to prevent the planetary gear set from falling off the cover plate 36. Cover plate 36 and carrier 5
6, a wave washer 58 and a washer 59 constituting a clutch mechanism are arranged. The wave washer 58 is integrally attached to the carrier 56. The washer 59 is pressed into the inner peripheral surface of the cover plate 36 integrally.
Abuts against the washer 59 in a compressed state. As a result, the wave washer 58 is constantly pressing the carrier 56, and the carrier 56 is in contact with the protection plate 200. For this reason, the carrier 56 is normally pressed by the wave washer 58 (the carrier 56 and the protection plate 2).
The rotation of the planetary gear 54 is prevented by the frictional force of the planetary gear 54 and the frictional force of the planetary gear 54 with respect to the wave washer 58 and the washer 59. On the other hand, in a state where the projection 52 of the flange portion 48 of the ring gear 46 abuts the projection 40 and further rotation of the ring gear 46 in the forward direction is prevented, the sun gear 44 which exceeds the pressing force (retention force) of the carrier 56 is used. The wave washer 58 is configured to release the holding of the carrier 56 and allow the planetary gear 54 to revolve when the forward rotation force acts. That is, the wave washer 58 can block the transmission of the rotational force in the forward direction from the sun gear 44 (the shaft 20) to the ring gear 46 after the protrusion 52 of the flange portion 48 comes into contact with the protrusion 40. It has become. Therefore, when the sun gear 44 (the shaft 20) rotates in the forward direction (the direction in which the ring gear 46 is rotated in the forward direction) in a state where the rotation of the ring gear 46 is prevented by the projection 52 abutting on the projection 40. , Only the planetary gear 54 revolves.

The cover plate 36 is provided with two pairs of fixed contacts 60A, 61A and fixed contacts 60B, 61B. Each of the fixed contacts 60A, 61A and the fixed contacts 60B, 61B is a pair of two contact plates having elasticity. The fixed contacts 60A and the fixed contacts 60B are integrally formed, and the fixed contacts 61A and the fixed contacts 60A and 61B are formed integrally. 61B are integrally formed. One end of each of the fixed contacts 60A and 61A and the fixed contacts 60B and 61B is fixed to the cover plate 36, and the tip of the fixed contact extends toward the flange portion 48 of the ring gear 46. (Cover plate 36
And the peripheral surface on the opposite side). That is,
The fixed contacts 60A and 61A, the fixed contacts 60B and 61B
In this configuration, the flange portion 48 (moving contacts 50A, 50B) of the ring gear 46 is pressed from the side opposite to the cover plate 36.

The fixed contacts 60A and 61A and the fixed contacts 60B and 61B contact the moving contacts 50A and 50B at a predetermined rotation position of the ring gear 46. In addition,
The fixed contacts 60A and 61A correspond to the moving contact 50A, and the fixed contacts 60B and 61B correspond to the moving contact 50B.

Further, these fixed contacts 60A, 61
A, fixed contacts 60B and 61B are electrically connected to the control circuit of the power window device,
When 0B comes into contact with the fixed contacts 60A and 60B to be in a non-conductive state, the rotational position of the ring gear 46, that is, the rotational position of the sun gear 44, that is, the rotational position of the shaft 20 can be detected, which will be described later. Used for controlling the rotation of the motor 10.

Here, in the first embodiment,
For example, the window glass is 4m downward from the upper end stop position.
At a point in time when the protrusion 52 reaches the position separated by m, the protrusion 52 reaches a position upstream of a position in contact with the protrusion 40 by a predetermined rotation angle, and at this point, the moving contacts 50A and 50B contact the fixed contacts 60A and 60B. To a non-conducting state, and thereafter, until the protrusion 52 contacts the protrusion 40.
The dimensions and the like of each part are set so that this non-conductive state is maintained.

Contrary to the above, when the window glass reaches a position 4 mm downward from the upper end stop position, the projection 5
At a point in time when the movable contact 2 reaches a position on the upstream side of a predetermined rotation angle from a position where it contacts the projection 40, the moving contacts 50A and 50B come into contact with the fixed contacts 60A and 61A and the fixed contacts 60B and 61B to become conductive. The configuration may be such that the position is detected. Further, after the non-conducting state or the conducting state as described above, it is not always necessary to maintain the non-conducting state or the conducting state electrically, and the moving contacts 50A and 50B are fixed to the fixed contacts 60A and 61A. It may be configured such that it is determined that a predetermined rotational position has been reached by detecting a trigger signal due to contact with 60B and 61B.

The position detecting device 30 includes a pulse plate 192 as pulse generating means and a sliding contact 196 as pulse detecting means.

The pulse plate 192 is formed in a thin disk shape, and a fitting hole 198 formed in the center is press-fitted into the connecting shaft 42 and fixed integrally therewith. Therefore, the pulse plate 192 always has the connecting shaft 4
2 and rotate together. The pulse plate 192 is provided with a conductive portion 194. The conductive part 194 is
A pulse-shaped first conductive portion 194A is provided along the circumferential direction on the peripheral edge of the pulse plate 192, and includes a second conductive portion 194B adjacent to the first conductive portion 194A and having continuous pulse-shaped irregularities. ing.

On the other hand, the sliding contact 196 has the base fixed to the cover plate 36 and the conductive portion 1 of the pulse plate 192.
94, and is always the first of the conductive portions 194.
An input contact 196A that contacts the conductive portion 194A and an output contact 196 that contacts the second conductive portion 194B of the conductive portion 194.
B. Thus, the pulse signal can be detected with the rotation of the pulse plate 192. The detected pulse signal is used for controlling the moving position of the moving body (window glass).

The conductive portion 194 is connected to the pulse plate 19.
2 may be provided on the peripheral side wall of the pulse plate 192 without being provided on the upper surface. In this case, the sliding contact 19
6 is fixed to the cover plate 36 so as to face the peripheral side wall of the pulse plate 192.

Further, between the pulse plate 192 and the ring gear 46 (flange portion 48), the above-described protection plate 200 is disposed. This protection plate 20
Reference numeral 0 denotes a peripheral portion that is held and fixed to the cover plate 36 to hold the ring gear 46, the carrier 56, and the like to prevent falling off from the cover plate 36, and to prevent the pulse plate 192 and the ring gear 46 (flange portion 48) from coming off. By intervening between them, their movement is restricted so that they do not contact unnecessarily.

Further, the position detecting device 30 has a push button 202 as initial position setting means. As shown in detail in FIG. 6, the pressing button 202 is held in a holding hole 204 of the cover plate 36 via a rubber 206, and is arranged to face the ring gear 46.
Therefore, by pressing the pressing button 202 from the outside, the tip of the pressing button 202 (rubber 206) presses the ring gear 46 to forcibly prevent rotation.

The holding spring 2 is provided around the rubber 206.
08 is wound to ensure the sealing performance. Further, a protection wall 210 is formed integrally with the cover plate 36 around the pressing button 202. The protection wall 210 is provided with a push button 202 in a normal state (non-operation state).
It is formed slightly higher (higher) than that, and prevents careless operation of the push button 202.

Next, the operation of the first embodiment will be described with reference to a flow chart shown in FIG. 7 by taking as an example a case where the ascending switch of the power window device is operated to move the window glass upward.

The motor 10 and the position detecting device 3 having the above configuration
In step 0, when the raising switch of the power window device is operated in step 300, the motor 10 is operated to rotate the shaft 20 in step 302, whereby the window regulator is operated to raise the window glass.

Here, normally (during the rising of the window glass), the carrier 56 is
Is pressed and held, and the planetary gear 54 is in a state where its revolution is prevented. Therefore, the axis 20
With the rotation of, the rotational force of the connecting shaft 42 (that is, the sun gear 44) is reduced via the planetary gear 54 and transmitted to the ring gear 46, and the ring gear 46 is gradually rotated in the forward direction.

Next, at step 304, the position detecting device 30 detects whether or not the predetermined rotational position of the motor 10 has been reached, that is, whether the window glass has reached a predetermined position (a position 4 mm below the upper end stop position).

That is, in the position detecting device 30, the shaft 20
The rotational force of the connecting shaft 42 (that is, the sun gear 44) is reduced via the planetary gear 54 and transmitted to the ring gear 46 with the rotation of the ring gear 46, and the ring gear 46 is gradually rotated in the forward direction. If the protrusion 52 does not reach the position 4 mm downward from the protrusion, the protrusion 52 is largely separated from the protrusion 40 and the moving contact 5
0A and 50B are fixed contacts 60A and 61A, fixed contacts 60
B, 61B and are in a non-contact state. Thereby, the rotation position of the shaft 20 (the fact that the window glass has not reached the position 4 mm below the upper end stop position) is detected. In this case, the operation proceeds to step 306 while the operation of the motor 10 is continued, and it is determined whether or not a foreign object has been caught based on the lock current of the motor 10 and the like. If it is detected that a foreign object has been caught, the motor 10 is rotated in the reverse direction in step 308, and the window glass is lowered. On the other hand, if no entrapment of foreign matter is detected in step 306, the process returns to step 304 again.

On the other hand, in step 304, when the window glass reaches a position 4 mm downward from the upper end stop position, the projection 52 reaches a position on the upstream side of a predetermined rotation angle from a position where it comes into contact with the projection 40. Further, at this point, the moving contacts 50A and 50B are fixed contacts 60A and 60B.
Are brought into a non-conductive state by contact with the
(The window glass has reached a position 4 mm downward from the upper end stop position).

In step 304, the shaft 2 of the motor 10
If 0 is detected as the predetermined rotation position, that is, the window glass has reached the predetermined position, the process proceeds to step 310 while the operation of the motor 10 is continued. At this time, the relative contact positions of the moving contacts 50A, 50B and the fixed contacts 60A, 60B and the fixed contacts 61A, 61B change due to the rotation of the ring gear 46, but the non-conduction state is maintained.

In step 310, it is determined whether or not the window glass is fully closed based on a change in the pulse signal generated by the conductive portion 194 and the sliding contact 196 as the pulse plate 192 rotates. When the window glass is completely closed, the motor 10 is stopped in step 312, and the process ends.

Further, in the position detecting device 30, when the shaft 20 of the motor 10 is once sufficiently rotated in the forward direction at the time of being mounted on the vehicle body, the moving contacts 50A, 50B
Can automatically be set to the initial state of contact with the fixed contacts 60A and 60B.

That is, when the motor 1 is mounted on the vehicle body,
Once the 0 axis 20 is fully rotated once in the positive direction,
The protrusion 52 of the flange portion 48 of the ring gear 46
, And further rotation of the ring gear 46 in the forward direction is prevented. In this state, the shaft 20
Rotates, the rotational force of the sun gear 44 exceeding the pressing force (holding force) of the carrier 56 acts, and the wave washer 5
8 releases the holding of the carrier 56 and the planetary gear 5
4 revolutions are possible. That is, the wave washer 58 can block the transmission of the rotational force in the forward direction from the sun gear 44 (the shaft 20) to the ring gear 46 after the protrusion 52 of the flange portion 48 comes into contact with the protrusion 40. , The projection 52 abuts the projection 40 and the ring gear 46
In this state, when the sun gear 44 (the shaft 20) rotates in the forward direction (the direction in which the ring gear 46 is rotated in the forward direction), only the planetary gear 54 revolves. Therefore, after the protrusion 52 contacts the protrusion 40 and the moving contacts 50A and 50B contact the fixed contacts 60A and 60B, even if the shaft 20 of the motor 10 rotates in the forward direction, the ring gear 46 is not moved and the moving contact 50A , 50B
And the fixed contacts 60A and 60B remain in contact with each other. That is, once the shaft 20 of the motor 10 is sufficiently rotated in the forward direction, the protrusion 52 comes into contact with the protrusion 40, and the moving contacts 50A, 50B become fixed contacts 60A, 60B.
It is automatically set to the initial state in which B is touched.

In other words, in the position detecting device 30, a position separated by a predetermined distance (4 mm in the first embodiment) from the fully closed position of the window glass (the maximum upper movement limit) is
Regardless of whether or not the window glass has reached the fully closed position (upper limit of maximum movement), it can be stored mechanically (in order to detect the position based on the position 4 mm away from the window glass). It is possible to perform the operation without error. For example, in the related art, in the configuration in which the rotation speed of the armature of the motor is detected to detect the moving position of the window glass, the configuration is such that the window glass is reset so as to be based on the fully closed position of the window glass. If the window glass stops without reaching the true upper maximum movement limit due to a decrease in the power supply voltage or an increase in frictional resistance between the window glass and the window frame, the false stop position is set to the window glass. Is reset as the fully closed position of Therefore, in this case, since the drive of the motor is controlled based on the fully closed position of the false window glass, the error becomes extremely large. In contrast,
In the position detection device 30, even if the window glass stops without reaching the true fully closed position (upper limit of maximum movement), the window glass thereafter moves 4 m from the true fully closed position.
This is reliably detected at the time when the vehicle passes the position separated by m, so that the movement control of the window glass can be reliably performed without error. In particular, in the wire type window regulator device, the error of the movement position control due to the slack of the wire is large, but by using the position detection device 30, the error caused by the slack of the wire can be absorbed, and the control can be performed with high precision. It is possible to do.

As described above, in the position detecting device 30, when the shaft 20 of the motor 10 is once sufficiently rotated in the forward direction at the time of assembling to the vehicle body, the projection 52 comes into contact with the projection 40 and the moving contact 50A, 50B is automatically set to the initial state in contact with the fixed contacts 60A and 60B, and the initial position can be easily set without complicated adjustment of the mounting position during assembly and complicated resetting after assembly. In addition, the movement control of the window glass can be reliably performed without error. Further, the position detection device 3 according to the first embodiment
At 0, the pulse signal is detected by the output contact 196B repeatedly contacting / non-contacting the second conductive portion 194B of the conductive portion 194 with the rotation of the pulse plate 192. Therefore, it is possible to linearly detect the rotation speed of the shaft 20 of the motor 10 based on the detected pulse signal.

Therefore, for example, the position detecting device 30
Is used in a power window device of a vehicle having a pinch prevention function, a predetermined position and a moving speed of a window glass can be linearly detected and controlled at any time.

Further, in the position detecting device 30, the rotation of the ring gear 46 can be forcibly prevented by pressing the push button 202 from outside. For this reason, if the window glass has already reached the fully closed position (upper limit of maximum movement) or is separated from the fully closed position by a predetermined distance (4 mm in the first embodiment), the position detecting device 3
Even when 0 is attached, the initial position can be easily set.

That is, in this case, the push button 20
While the rotation of the ring gear 46 is prevented by the operation 2, the shaft 20 of the motor 10 is once rotated in the reverse direction (downward direction of the window glass), and the window glass is once opened. At this time, the protrusion 52 is separated from the protrusion 40, and the moving contacts 50A, 50B are fixed contacts 60A, 61A.
A, it is separated from the fixed contacts 60B and 61B and is in a non-contact state. Furthermore, if the shaft 20 of the motor 10 is rotated in the forward direction (the rising direction of the window glass) in a state where the operation of the push button 202 is released and the rotation of the ring gear 46 is enabled again thereafter, as described above, , Moving contact 50A,
Automatically set to the initial state where 50B contacts both fixed contacts 60A and 60B and becomes non-conductive (that is, the initial state where the window glass is mechanically memorized at the position 4 mm below the upper end stop position). Is done. Thereafter, the projection 52 comes into contact with the projection 40 as described above, and the clutch mechanism operates.

As described above, in the position detecting device 30, when the motor 10 is operated together with the operation of the press button 202 when assembling the vehicle body, the projection 52 comes into contact with the projection 40 and the moving contacts 50A, 50B Can be reliably set to the initial state in which it contacts the fixed contacts 60A and 60B. That is, irrespective of the rotational position of the shaft 20 of the motor 10 (the moving position of the window glass), it can be securely assembled to the vehicle body in a proper assembly state, and the original function can be reliably maintained.

Further, since a protective wall 210 is provided around the pressing button 202, careless pressing of the pressing button 2
02 is also prevented.

Next, another embodiment of the present invention will be described. The same parts as those in the first embodiment are denoted by the same reference numerals as those in the first embodiment.
The description is omitted. (Second Embodiment) FIG. 8 is an enlarged sectional view of a main part of a position detecting device 400 according to a second embodiment of the present invention.

In the position detecting device 400, the push button 40
2 is provided. The push button 402 is basically the same as the push button 202 according to the above-described first embodiment, but is arranged at a position facing the flange portion 48 of the ring gear 46, and is pressed by pressing the flange portion. 48 can be pressed to prevent the ring gear 46 from rotating.

In the position detecting device 400 as well, when the motor 10 is operated by simultaneously operating the pressing button 402 when assembling the vehicle body, the projection 52 abuts on the projection 40 and the moving contacts 50A and 50B are fixed. The initial state of contact with the contacts 60A and 60B can be reliably set, and the motor 10
Irrespective of the rotational position of the shaft 20 (the moving position of the window glass), it can be securely assembled in a proper assembly state to the vehicle body, and the original function can be reliably maintained. (Third Embodiment) FIG. 9 is an enlarged sectional view of a main part of a position detecting device 410 according to a third embodiment of the present invention.

In the position detecting device 410, the push button 41
2 is provided. The pressing button 412 is basically the same as the pressing button 202 described above, and is held in the holding hole 204 via a rubber 414 at a position facing the ring gear 46. Here, the rubber 414 is fixed to the periphery of the holding hole 204 with an adhesive, so that the above-described holding spring 208 is omitted.

In this position detecting device 410 as well, if the motor 10 is operated together with the operation of the push button 412 when assembling it to the vehicle body, the rotational position of the shaft 20 of the motor 10 (the moving position of the window glass) is attained. Regardless, the vehicle can be securely assembled in a proper assembly state to the vehicle body, and the original functions can be reliably maintained. (Fourth Embodiment) FIG. 10 is an enlarged sectional view of a main part of a position detecting device 420 according to a fourth embodiment of the present invention.

The position detecting device 420 has basically the same configuration as the position detecting device 400 according to the second embodiment, except that the push button 402 is omitted, and the position of the flange portion 48 of the ring gear 46 is changed. Holding hole 2 at opposite position
04 and a rubber 422 are provided. In this position detection device 420, a rubber 4
By pressing the 22, the flange portion 48 can be pressed to prevent the ring gear 46 from rotating.

Also in this position detecting device 420, when the motor 10 is operated by simultaneously using an external pressing operation of the rubber 422 by a jig when assembling the vehicle, the motor 1
Regardless of the rotation position of the 0-axis 20 (the movement position of the window glass), it can be securely mounted to the vehicle body in a proper mounting state. (Fifth Embodiment) FIG. 11 is an enlarged sectional view of a main part of a position detecting device 430 according to a fifth embodiment of the present invention.

The position detecting device 430 has a pressing screw 432 as initial position setting means. Pressing screw 43
2 is a ring gear 4 similar to the above-described press button 202.
The ring gear 46 is disposed at a position opposing the ring gear 6, and can be rotated to prevent the ring gear 46 from rotating. Further, the pressing screw 432
A rubber 434 is provided around the pressing screw 4.
32 is covered to ensure sealing properties.

In the position detecting device 430, when the motor 10 is operated by simultaneously using the screwing operation of the pressing screw 432 when assembling the vehicle body, the rotational position of the shaft 20 of the motor 10 (the moving position of the window glass). Regardless, it is possible to reliably assemble the vehicle body in a proper assembly state. (Sixth Embodiment) FIG. 12 is an enlarged sectional view of a main part of a position detecting device 440 according to a sixth embodiment of the present invention.

In the position detecting device 440, the push button 44
2 and rubber 444. Push button 442
Is the push button 202 according to the first embodiment described above.
This is basically the same as that of the first embodiment except that it is housed in the rubber 444 without protruding outside. Therefore, by pressing the pressing button 442 from outside with a jig, the flange portion 48 is pressed and rotation of the ring gear 46 can be prevented.

On the other hand, a lip 446 is formed on the periphery of the rubber 444 (the end on the side of the cover plate 36). The lip portion 446 extends outward.

The position detecting device 44 is provided on the door inner panel P of the vehicle to which the position detecting device 440 is applied.
0 is the push button 4 in a state where it is attached to the vehicle door.
An operation hole Q is formed at a position opposite to 42. For this reason, from the outside of the door inner panel P, this operation hole Q
The push button 442 can be operated via the.

In this case, when the position detecting device 440 is assembled to the vehicle door, the lip portion 446 of the rubber 444 is connected to the door inner panel P (operation hole Q) as shown by a two-dot chain line in FIG. (Peripheral wall) to ensure the sealing performance.

Also in this position detecting device 440, when assembling to the vehicle body, an external pressing button 442 by a jig is used.
If the motor 10 is operated in combination with the pressing operation of the above, the motor 10 can be reliably mounted in a proper mounting state on the vehicle body regardless of the rotational position of the shaft 20 of the motor 10 (moving position of the window glass), The original function can be reliably maintained.

In this case, since the push button 442 can be operated from the outside of the door inner panel P through the operation hole Q formed in the door inner panel P, the position detecting device 440 is connected to the door inner panel P. The initial position can be set without removing from the inside of the device, and workability is extremely improved.

Further, the lip portion 446 of the rubber 444 is pressed against and assembled to the door inner panel P (the peripheral wall of the operation hole Q) to cover the operation hole Q, so that the sealing property can be ensured. (Seventh Embodiment) FIG. 13 is an enlarged sectional view of a main part of a position detecting device 450 according to a seventh embodiment of the present invention.

The position detecting device 450 is basically the same as the position detecting device 440 according to the sixth embodiment described above, but includes a push button 452 and a rubber 454. A lip 456 is formed at a corner of the rubber 454 (a tip opposite to the cover plate 36). The lip portion 456 contacts the door inner panel P (the peripheral wall of the operation hole Q) as shown by a two-dot chain line in FIG. The sealability can be ensured by contact.

Also in this position detecting device 450, an external pressing button 452 by a jig is used when assembling the vehicle body.
If the motor 10 is operated in combination with the pressing operation of the above, the motor 10 can be reliably mounted in a proper mounting state on the vehicle body regardless of the rotational position of the shaft 20 of the motor 10 (moving position of the window glass), The original function can be reliably maintained.

Also in this case, since the push button 452 can be operated from the outside of the door inner panel P via the operation hole Q formed in the door inner panel P, the position detecting device 450 is connected to the door inner panel P. The initial position can be set without removing the panel from the inside of the panel P, and workability is extremely improved.

Further, the lip portion 456 of the rubber 454 is pressed against and assembled to the door inner panel P (the peripheral wall of the operation hole Q), so that the sealing property can be ensured. (Eighth Embodiment) FIG. 14 is an enlarged sectional view of a main part of a position detecting device 460 according to an eighth embodiment of the present invention.

The position detecting device 460 is basically the same as the position detecting device 450 according to the above-described seventh embodiment, except that the push button 452 is omitted, and a rubber 464 and a holding spring 466 are provided. ing. A lip 468 is formed at a corner of the rubber 464 (the end opposite to the cover plate 36). The lip portion 468 contacts the door inner panel P (the peripheral wall of the operation hole Q) as shown by a two-dot chain line in FIG. The sealability can be ensured by contact.

Also in this position detecting device 460, when the motor 10 is operated by simultaneously using the pressing operation of the rubber 464 by the jig when assembling to the vehicle body, the motor 1
Regardless of the rotation position of the 0-axis 20 (the movement position of the window glass), it can be securely mounted to the vehicle body in a proper mounting state. Also in this case, since the rubber 464 can be operated from the outside of the door inner panel P via the operation hole Q, workability is improved.

Further, since the lip portion 468 of the rubber 464 is pressed against and assembled to the door inner panel P (the peripheral wall of the operation hole Q), the sealing performance can be ensured. (Ninth Embodiment) FIG. 15 is an enlarged sectional view of a main part of a position detecting device 470 according to a ninth embodiment of the present invention.

The position detecting device 470 is basically the same as the position detecting device 460 according to the eighth embodiment, but includes a rubber 474. The rubber 474 is disposed at a position facing the flange portion 48 of the ring gear 46, and can be pressed to press the flange portion 48 to prevent rotation of the ring gear 46. A lip 476 is formed at the corner of the rubber 474 (the end opposite to the cover plate 36). The lip portion 476 is formed in a U-shape in cross section.
The tip is in pressure contact with the cover plate 36. When the position detecting device 470 is assembled to the vehicle door as described above, the lip portion 476 causes the U-shaped intermediate portion to contact the door inner panel P (the peripheral wall of the operation hole Q) as shown in FIG. The sealability can be ensured by contact.

Also in this position detecting device 470, when the motor 10 is operated by simultaneously using an external pressing operation of the rubber 474 by a jig when assembling the vehicle, the motor 1
Regardless of the rotation position of the 0 shaft 20 (the movement position of the window glass), it can be securely mounted to the vehicle body in a proper mounting state, so that workability is improved and sealing performance can be ensured. (Tenth Embodiment) FIG. 16 is an enlarged sectional view of a main part of a position detecting device 480 according to a tenth embodiment of the present invention.

The position detecting device 480 is basically the same as the position detecting device 470 according to the ninth embodiment, but includes a rubber 484. The rubber 484 is arranged at a position facing the flange portion 48 of the ring gear 46, and the pressing operation can press the flange portion 48 to prevent the rotation of the ring gear 46. Further, a fitting portion 486 is formed at a corner portion of the rubber 484 (a tip portion on the opposite side to the cover plate 36).
The fitting portion 486 is formed in a U-shape in cross section. When the position detecting device 480 is assembled to the vehicle door, the U-shaped portion is formed in the operation hole Q of the door inner panel P as shown in FIG.
To ensure the sealing performance.

In the position detecting device 480 as well, when the motor 10 is operated using the jig to press the rubber 484 from the outside at the time of assembling to the vehicle body, the motor 1
Regardless of the rotation position of the 0 shaft 20 (the movement position of the window glass), it can be securely mounted to the vehicle body in a proper mounting state, so that workability is improved and sealability can be ensured.

In each of the above-described embodiments,
Position detecting devices 30, 400, 410, 420, 430,
Although the example in which 440, 450, 460, 470, 480, and the like are directly applied to the motor 10 for the power window device has been described, these position detection devices 30 and the like are directly applied to such a motor 10. The present invention is not limited to this, and can be applied to other mechanisms and parts. For example, it may be provided on an arm rotation support shaft of an X-arm type window regulator device, or may be provided on a wire winding pulley of a wire type window regulator device. Even in these cases, not only can the position of the window glass be detected with high accuracy and high-precision movement control be possible, but also the complicated adjustment and assembly of the assembly position during assembly The initial position can be easily set without complicated resetting after resetting.

[0094]

As described above, according to the present invention, the position of the window glass can be detected with high accuracy, and the initial position of the position detecting device can be set without complicated adjustment. Not only can it be realized at a low cost with a structure, but also it has an excellent effect that the position detecting device can be securely mounted in a regular mounting state and the original function can be reliably maintained.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a position detecting device according to a first embodiment of the present invention.

FIG. 2 is an overall perspective view of a motor for a power window device to which the position detecting device according to the first embodiment of the present invention is applied.

FIG. 3 is a plan view of the position detection device according to the first embodiment of the present invention.

FIG. 4 is a sectional view of a position detecting device according to the first embodiment of the present invention and a motor for a power window device to which the position detecting device is applied.

FIG. 5 is a partially broken plan view of the position detecting device according to the first embodiment of the present invention.

FIG. 6 is an enlarged sectional view showing a push button of the position detection device according to the first embodiment of the present invention.

FIG. 7 is a flowchart showing control when the ascent switch of the power window device to which the position detecting device according to the first embodiment of the present invention is applied is operated to move the window glass upward;

FIG. 8 is an enlarged sectional view of a main part of a position detecting device according to a second embodiment of the present invention.

FIG. 9 is an enlarged sectional view of a main part of a position detecting device according to a third embodiment of the present invention.

FIG. 10 is an enlarged sectional view of a main part of a position detecting device according to a fourth embodiment of the present invention.

FIG. 11 is an enlarged sectional view of a main part of a position detecting device according to a fifth embodiment of the present invention.

FIG. 12 is an enlarged sectional view of a main part of a position detecting device according to a sixth embodiment of the present invention.

FIG. 13 is an enlarged sectional view of a main part of a position detecting device according to a seventh embodiment of the present invention.

FIG. 14 is an enlarged sectional view of a main part of a position detecting device according to an eighth embodiment of the present invention.

FIG. 15 is an enlarged sectional view of a main part of a position detection device according to a ninth embodiment of the present invention.

FIG. 16 is an enlarged sectional view of a main part of a position detecting device according to a tenth embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 10 motor 20 shaft (motor output shaft) 30 position detecting device 34 base plate 36 cover plate 44 sun gear 46 ring gear 48 flange portion 50A, 50B moving contact 54 planetary gear 56 carrier 58 wave washer (clutch mechanism) 60A, 60B fixed contact 61A, 61B fixed Contact 202 Push button (initial position setting means) 206 Rubber 400 Position detecting device 402 Push button (initial position setting means) 410 Position detecting device 412 Push button (initial position setting means) 414 Rubber 420 Position detecting device 422 Rubber 430 Position detecting device 432 pressing screw (initial position setting means) 434 rubber 440 position detecting device 442 pressing button (initial position setting means) 444 rubber 450 position detecting device 452 pressing button (initial position Position setting means) 454 rubber 460 position detecting device 464 rubber 470 position detecting device 474 rubber 480 position detecting device 484 rubber P door / inner panel Q operation hole

Continuation of front page (72) Inventor Masaki Fukuzawa 1 Toyota Town, Toyota City, Aichi Prefecture Inside Toyota Motor Corporation (56) References JP-A-8-29114 (JP, A) JP-A-3-251909 (JP, A) (58) Field surveyed (Int. Cl. ⁷ , DB name) E05F 15/16 B60J 1/17 G01B 21/22

Claims (3)

(57) [Claims] 1. A power window device operated by rotation of a motor output shaft connected to a drive unit of a window regulator, the power window device being electrically connected to a power window control circuit and corresponding to a predetermined rotation position of the motor output shaft. A ring gear that has a set contact, is interlocked with the motor output shaft, and in a state where the contact is operated, transmission of rotational force from the motor output shaft is interrupted to prevent rotation in the forward direction; An initial position which is held via rubber in a holding hole provided in a cover plate of the device and which forcibly prevents rotation of the ring gear regardless of the rotation position of the motor output shaft by pressing the ring gear from the outside. A power window device comprising: setting means. 2. A power window device operated by rotation of a motor output shaft connected to a drive unit of a window regulator, the power window device being electrically connected to a power window control circuit and corresponding to a predetermined rotation position of the motor output shaft. A ring gear that has a set contact, is interlocked with the motor output shaft, and in a state where the contact is operated, transmission of rotational force from the motor output shaft is interrupted to prevent forward rotation; An initial position setting means which is covered with rubber and forcibly prevents rotation of the ring gear irrespective of the rotational position of the motor output shaft by pressing the ring gear from the outside, and a power window. apparatus. 3. The power window device according to claim 1, wherein the initial position setting means is a ring gear pressing member that presses the ring gear to forcibly prevent rotation.