Slide door apparatus for vehicles

Information

  • Patent Grant
  • 6270149
  • Patent Number
    6,270,149
  • Date Filed
    Tuesday, November 30, 1999
    24 years ago
  • Date Issued
    Tuesday, August 7, 2001
    22 years ago
Abstract
A vehicular slide door apparatus includes a slide door which opens and closes an opening formed in a lateral side of a vehicle body. A brake device is provided at the lateral side of the vehicle body to apply a braking force to the slide door to adjust or control the speed of movement of the sliding door.
Description




This application is based on and claims priority under 35 U.S.C. § 119 with respect to Japanese Application No. 10(1998)-355196 filed on Dec. 14, 1998, the entire content of which is incorporated herein by reference.




FIELD OF THE INVENTION




The present invention generally relates to a vehicle door. More particularly, the present invention pertains to a slide door apparatus for vehicles.




BACKGROUND OF THE INVENTION




Known types of slide door apparatus are disclosed in Japanese Patent Laid-Open Publication Nos. Hei. 9-4323, Hei. 10-8828, and Hei. 10-18708.




In each of these apparatus, when an electrically operated driving mechanism is turned on, the resultant rotation in one direction moves the slide door in its opening direction, thereby opening the opening area formed in the side of the vehicle body. The resulting rotation in the other direction moves the slide door in its closing direction, thereby closing the opening area formed in the side of the vehicle body.




A clutch mechanism is interposed between the driving mechanism and the slide door. If the clutch mechanism is in its disengaged condition, the slide door is isolated from the driving mechanism, thereby allowing the slide door to be moved manually. However, when the vehicle is parked on a sloping road, the gravity applied to the inclined slide door causes the door to be opened unexpectedly and excessively fast.




Accordingly, a need exists for a slide door apparatus for vehicles in which the sliding speed of the slide door is controllable or adjustable.




SUMMARY OF THE INVENTION




In light of the foregoing, the present invention provides a vehicular slide door apparatus that includes a plurality of guide rails mounted on a lateral side of a vehicle body, a slide door mounted on the guide rails for sliding movement in a lengthwise direction of the vehicle body between a fully open position and a fully closed position, an elongated member connected to the slide door, and a brake device operatively associated with the elongated member for applying a brake force to the elongated member during sliding movement of the slide door from the fully open position towards the fully closed position to control movement of the slide door during movement from the fully open position towards the fully closed position.




According to another aspect of the invention, a vehicular slide door apparatus includes a slide door movable along a lengthwise direction of the vehicle body for opening and closing an opening area formed in a lateral side of the vehicle body, and a brake device provided at the lateral side of the vehicle body for applying a brake force to the slide door.











BRIEF DESCRIPTION OF THE DRAWING FIGURES




The foregoing and additional features of the present invention will become more apparent from the following detailed description considered with reference to the accompanying drawing FIGS. in which like elements are designated by like reference numerals and wherein:





FIG. 1

is a side view of a vehicle body at which is positioned a slide door apparatus according to the present invention;





FIG. 2

is a horizontal cross-sectional view of the slide door apparatus shown in

FIG. 1

;





FIG. 3

is a front view of the driving device associated with the slide door apparatus shown in

FIG. 1

;





FIG. 4

is an exploded perspective view of the driving device shown In

FIG.3

;





FIG. 5

is an exploded perspective view of the second disk assembly employed in the driving device shown in

FIG.3

;





FIG. 6

is a cross-sectional view taken along the section line VI—VI in

FIG.4

;





FIG. 7

is a cross-sectional view taken along the section line VII—VII in

FIG.4

;





FIG. 8

is an exploded perspective view of a brake device used in conjunction with the driving device shown in

FIG. 3

; and





FIG. 9

is a cross-sectional view taken along the section line IX—IX in FIG.


4


.











DETAILED DESCRIPTION OF THE INVENTION





FIGS. 1 and 2

illustrate the rear portion of the vehicle body


2


of a van type vehicle. The lateral side


2




a


of the vehicle body


2


is provided with an opening area


2




b


possessing a substantially rectangular shape. The opening area


2




b


is adapted to be closed and opened by a slide door


1


. The slide door


1


is supported by an upper guide rail


41


, a lower guide rail


42


and a center guide rail


3


so as to be movable in the vehicle lengthwise direction corresponding to the right-and-left direction in FIG.


1


.




The upper guide rail


41


is arranged along the upper periphery of the opening area


2




b


at a position closely adjacent the opening area


2




b


and is secured to the lateral side


2




a


of the vehicle body


2


by way of suitable connecting devices such as screws. The lower guide rail


42


is arranged along the lower periphery of the opening area


2




b


at a position closely adjacent the opening area


2




b


and is secured to the lateral side


2




a


of the vehicle body


2


by way of suitable connecting devices such as screws. The center guide rail


3


is positioned at the rear side of the opening area


2




b


and is secured to the lateral side


2




a


of the vehicle body


2


by way of suitable connecting devices such as screws.




The slide door


1


is provided with three guide roller units


5


which slidably engage the respective guide rails


3


,


41


,


42


, thereby allowing the slide door


1


to slide along the guide rails


3


,


41


,


42


. The guide rails


3


,


41


,


42


are arranged parallel to each other and extend in the vehicle lengthwise direction. For establishing a coplanar relationship between the outer surface of the slide door and the outer surface of the lateral side


2




a


of the vehicle body


2


when the opening area


2




b


is fully closed by the slide door


1


(i.e., when the slide door


1


is in the fully closed position), the front end of each of the guide rails


3


,


41


,


42


is bent toward the interior or inner space of the vehicle body


2


. When the opening area


2




b


is fully opened (i.e., when the slide door


1


is in the fully opened position), the slide door


1


is positioned at the rear side of the opening area


2




b


and is positioned in an overlapping condition relative to the lateral side


2




a


of the vehicle body


2


.




The roller unit


5


which slides along the center guide rail


3


is connected to one end of a geared cable


6


, seen in

FIG. 3

, which passes through several guide pipes


7


,


9


,


10


. The geared cable


6


thus forms an elongated member which moves together with the slide door


1


. The other end of the geared cable


6


forms a free end of the cable. The geared cable


6


is connected to a drive device


8


, the details of which will be described below, at a position between the guide pipes


7


,


9


. The guide pipe


7


extends along the center guide rail


3


and is secured to the center guide rail


3


. The guide pipe


9


is fixed to the inside of the vehicle body


2


, with one end of the guide pipe


9


passing therethrough for being connected to the guide pipe


7


at the rear portion of the guide rail


3


. The other end of the guide pipe


9


is connected to the drive device


8


. The guide pipe


10


is fixed inside the vehicle body


2


and is connected to the drive device


8


.




When the drive device


8


is turned on, the geared cable


6


is moved in one direction, which causes movement of the center positioned roller unit


5


along the center guide rail


3


. As a result, the slide door


1


moves along the guide rails


3


,


41


,


42


, thereby opening the opening area


2




b


in the lateral side


2




a


of the vehicle body. When the drive device


8


is operated in the opposite direction, the geared cable


6


is moved in the opposite direction, and this causes movement of the center positioned roller unit


5


along the center guide rail


3


in the opposite direction. The slide door


1


is thus moved along the guide rails


3


,


41


,


42


, thereby closing the opening area


2




b


in the lateral side


2




a


of the vehicle body.




Referring to

FIGS. 3-7

, the drive device


8


includes a casing


81


and an electric motor


82


functioning as an electrically operated driving source. The casing


81


is fixedly mounted on a bracket


83


which is secured to the lateral side


2




a


of the vehicle body


2


. The motor


82


is fastened to the casing


81


. The casing


81


includes a first housing part


81




a


and a second housing part


81




b


which are coupled or connected with each other by way of bolts


81




c


. An inner space D is defined within the housing that results from connection of the two housing parts


81




a


,


81




b


. The housing part


81


a of the casing


81


is connected with a cover


84


by a bolt


84




a


, thereby defining an accommodating space E between the housing part


81




a


and the cover


84


.




A shaft


11


is journalled in the casing


81


. The shaft


11


passes through the housing part


81




a


, the inner space D, and the accommodating space E. One end portion


11




a


of the shaft


11


is journalled in the cover


84


via a bush


84




b


, while the other end portion


11




b


of the shaft


11


is journaled in the housing part


81




b


via a bush


81




d


. A portion


11




c


of the shaft


11


is also journalled in the housing part


81




a


via a bush


81




e


. Between the end portions


11




a


,


11




c


, the shaft


11


is provided with a portion


11




e


in the form of a serration which is positioned in the accommodating space E. Between the portions


11




a


,


11




b


, the shaft


11


is provided with a supporting portion


1


If and a serrated portion


11




g.






An output gear


12


is mounted on the serrated portion


11




e


of the shaft


11


so that the output gear


12


and the serrated portion


11




e


of the shaft I


1


are rotated together. In the accommodating space E, a driven gear


13


is rotatably supported on the housing


81




a


and the cover


84


via a pin


31




a


, and is positioned in opposition to the output gear


12


. The geared cable


6


which is accommodated in the accommodating space E is in meshing engagement with both the output gear


12


and the driven gear


13


.




A rotor


14


formed of a magnetic material is mounted on the serrated portion


11




g


of the shaft


11


so that the rotor


14


rotates together with the serrated portion


11




g


of the shaft


11


. The upper and lower surfaces of the rotor


14


are provided with respective annular grooves


14




b


,


14




c


which communicate with each other by a plurality of circumferentially arranged arc-shaped slots


14




a


having a common center point. An annular geared projection


14




d


is formed on the upper surface of the rotor


14


and is positioned outside the groove


14




c.






A disk assembly


15


is mounted on the supporting portion


11




f


of the shaft


11


so as to rotate relative to the supporting portion


11




f


. As best shown in

FIG. 5

, the disk assembly


15


includes an input wheel


16


, an output wheel


17


, a movable plate


19


, and an elastic member


18


formed of, for example, rubber. The output wheel


17


is rotatably mounted on the supporting portion


11




f


of the shaft


11


.




The input wheel


16


is rotatably mounted on a boss portion


17




a


of the output wheel


17


. The outer periphery of the input wheel


16


possesses a geared configuration


16




a


which is adapted to be in indirect meshing engagement with a worm gear


22


via an idle gear


21


. The idle gear


21


is positioned in the inner space D of the casing


81


and is rotatably supported on the two housing parts


81




a


,


81




b


via a pin


21




a


. The worm gear


22


which is in meshing engagement with the idle gear


21


is fixedly mounted on the output shaft of the motor


82


which extends into the inner space D of the casing


81


. The idle gear


21


and the worm gear


22


constitute a speed reduction gear train.




The input wheel


16


is provided in its lower surface with an annular groove


16




b


into which a plurality of projections


16




c


extend. The output wheel


17


is provided with equi-pitched projections


17




b


each of which, when fitted in the annular groove


16




b


in the input wheel


16


, is in opposition to two adjacent projections


16




c


,


16




c


. An elastic member


18


which is accommodated in the annular groove


16




b


of the input wheel


16


has equi-pitched damper portions


18




a


each of which is positioned between two adjacent projections


16




c


,


17




b.






The movable plate


19


is in the form of a circular plate. The upper surface of the movable plate


19


is secured to a ring-shaped leaf spring


23


by way of screws which is riveted to the output wheel


17


, thus allowing the movable plate


19


to rotate together with the output wheel


18


. The movable plate


19


is capable of being deformed in its axial direction, which enables the movable plate


19


to move in the axial direction. The movable plate


19


is provided at its lower surface with a ring-shaped or annular geared portion


19




a.






When the electric motor


82


is turned on, the resulting rotational torque is transmitted, by way of the speed-reduction gear train, to the input wheel


16


. The rotation of the input wheel


16


is transmitted from the projections


16


a of the input wheel


16


to the projections


17




b


of the output wheel


17


via the damper portions


18




a


of the elastic member


18


, thereby rotating the output wheel


17


. The damper portions


18




a


of the elastic member


18


absorb shocks to some extent which inevitably occur between the input wheel


16


and the output wheel


17


.




The rotation of the output wheel


17


is transmitted by way of the leaf spring


23


to the movable plate


19


. This causes rotation of the movable plate


19


, thereby rotating the rotor


14


which is in meshing engagement with the movable plate


19


by engagement of the geared portion


19




a


of the movable plate


19


with the geared projection


14




d


on the rotor


14


.




A ring-shaped or annular electromagnetic coil winding device


24


is accommodated within the inner space D of the casing


81


so that the electromagnetic coil winding device


24


is positioned around the shaft


11


. The coil winding device


24


includes a core


25


and a coil winding


27


. The core


25


is formed of a magnetic material and has an upper open-faced annular groove


25




a


. The coil winding


27


is supplied with electric current from an external power supply by way of a pair of harnesses


26


. The coil winding


27


is formed on a bobbin


28


in winding mode and is acconmmodated in the annular groove


25




a


. The electromagnetic coil winding device


24


is positioned in the annular groove


14




b


of the rotor


14


and is secured to the housing


81




b


of the casing


81


by a plurality of bolts


24




a


. An anti-vibration plate


29


made of a rubber or a resin material is held between the housing


81




b


and the coil winding device


24


.




A ring-shaped or annular armature


30


which is formed of electromagnetic material is fixedly mounted on the lower surface of the movable plate


19


. The armature


30


is positioned in the annular groove


14




c


of the rotor


14


and is located in opposition to the electromagnetic coil winding device


24


with the rotor


14


being located between the armature


30


and the electromagnetic coil winding device


24


. Positioning the electromagnetic coil winding device


24


and the armature


30


in the respective annular grooves


14




b


,


14




c


of the rotor


14


reduces the axial extent or thickness of the driving device


8


, thereby establishing a thinner driving device


8


.




The movable plate


19


of the disk assembly


15


, the rotor


14


, and the electromagnetic coil winding device


24


together constitute a clutch mechanism CL.




When the coil winding


27


of the electromagnetic coil winding device


24


is energized, a magnetite closed loop is produced which circulates through the coil winding


27


, the core


25


, the rotor


14


, and the armature


30


. This generates an electromagnetic force attracting the armature


30


toward the rotor


14


. Then, the movable plate


19


is brought into axial movement toward the rotor


14


in such a manner that the movable plate


19


is increasingly deformed, which causes a meshing engagement between the geared portion


19




a


of the movable plate


19


and the geared portion


14




a


of the rotor


14


. Thus, the clutch mechanism CL assumes its ON-condition which allows the rotor


14


to rotate together with the disk assembly


15


. The anti-shock plate


29


decreases the shock sound which inevitably occurs upon meshing engagement between the geared portion


19




a


of the movable plate


19


and the geared portion


14




a


of the rotor


14


, thereby reducing the resonance sound at the lateral side


2




a


of the vehicle body


2


. Thus, the sound which occurs during the operation of the driving device


8


becomes reduced to a significant extent.




When current application to the coil winding


27


of the electromagnetic coil winding device


27


is interrupted, the foregoing attraction force disappears or stops. The restoration force of the leaf spring


23


thus causes the reverse axial movement of the movable plate


19


, thereby releasing the geared portion


19




a


of the movable plate


19


from the geared portion


14




d


of the rotor


14


. The clutch mechanism CL thus assumes the OFF-condition under which the disk assembly


15


is able to rotate relative to the rotor


14


.




An annular magnet


31


is fixedly positioned in the annular groove


14




c


of the rotor


14


. The magnet


31


is positioned outside the magnetite closed loop which circulates through the core


25


, the rotor


14


, and the armature


30


. Thus, the magnet


31


is not affected even when the coil winding


27


is being applied with current. Plural sets of N-pole and S-pole combinations are magnetized alternately along the entire outer periphery


31




a


of the magnet


31


in such a manner that the Npoles and S-poles are arranged alternately.




A door sensor


32


is provided in the casing


81


and is positioned in opposing relation to the magnet


31


. The sensor


32


includes a pair of Hall elements


32




a


,


32




a


both of which are secured to a vertical wall


81




f


of the housing


81




b


by screws. While the magnet


31


is being rotated, the Hall elements


32




a


,


32




a


issue signals, respectively, which are of a phase difference of


90


degrees. This means that the sensor


32


serves for detecting the rotational condition of the rotor


14


. Such signals are fed to a CPU


141


of an electronic control device


100


as will be described later and are used to calculate the sliding speed of the slide door


1


, the sliding direction of the slide door


1


, and the current position of the slide door


1


.




A divider


85


is positioned in the casing


81


such that the outer periphery of the divider


85


is held between the housing parts


81




a


,


81




b


. The shaft


11


passes through the divider


85


. The divider


85


divides the inner space D of the casing


81


into a first inner sub-space D


1


and a second inner sub-space D


2


. The input wheel


16


of the disk assembly


15


and the speed reduction gear train are accommodated in the first inner sub-space D


1


, while the output wheel


17


of the disk assembly


15


, the movable plate


19


, the rotor


14


, the electromagnetic coil winding device


24


, and the sensor


32


are accommodated in the second inner sub-space D


2


. Due to this arrangement, the rotor


14


, the movable plate


19


, and the sensor


32


are not liable to be infiltrated with grease between the idle gear


21


and the input wheel


16


or with metal powder generated by the meshing engagement.




The following is a description of the operation of the driving device


8


in conjunction with slide movement of the slide door


1


. To slide the slide door


1


, the clutch mechanism CL is first brought into the ON-condition under which the rotor


14


is rotatable together with the disk assembly


15


due to the fact that the geared portion


14




d


of the rotor


14


is in meshing engagement with the geared portion


19




a


of the movable plate


19


while the coil winding


27


of the coil winding device


24


is being energized. Under such a condition, if the electric motor


82


is turned on, the resulting rotation, after passing through the speed reduction gear train, rotates the disk assembly


15


and the rotor


14


, which causes rotation of the shaft


11


, thereby rotating the output gear


12


. Thus, the geared cable


6


which is in meshing engagement with the output gear


12


is moved in one direction to open the slide door


1


or in the opposite direction to close the slide door


1


. Establishing concurrent rotation of the rotor


14


and the disk assembly


15


causes an electrical operation of the slide door


1


under which the slide door


1


is moved by the electric motor


82


. Immediately upon the slide door


1


being brought into its fully opened condition or closed condition, the current application to the coil winding


27


of the electromagnetic coil winding device


24


and the electric motor


82


is turned off.




When the clutch mechanism CL is in the OFF-condition, the rotor


14


is rotatable relative to the disk assembly


15


due to the fact that the geared portion


14




d


of the rotor


14


is out of meshing engagement with the geared portion


19




a


of the movable plate


19


and the coil winding


27


of the coil winding device


24


is not being energized. Under such a condition, manual operation of the slide door


1


is established. That is, if the slide door


1


is moved manually in one direction to open the slide door or is moved in the opposite direction to close the slide door, the resulting movement of the geared cable


6


rotates the shaft


11


due to the fact that the geared cable


6


is in meshing engagement with the output gear


12


, The rotor


14


is thus rotated. At this time, the geared portion


14




d


of the rotor


14


is out of meshing engagement with the geared portion


19




a


of the movable plate


19


and so rotation of the rotor


14


is not transmitted to the disk assembly


15


.




As can be understood from the illustration in

FIG. 4

, the clutch mechanism CL is provided with a brake device


99


. As described below in more detail, this brake device in affect applies a braking force to the slide door to control sliding movement of the slide door.




Referring to

FIGS. 8 and 9

, a bracket


34


is secured by bolts to the housing part


81




a


of the casing


81


. The bracket


34


is fixed with an electromagnetic coil winding device


35


. The coil winding device


35


includes a core


36


and a coil winding


38


. The core


36


is formed of a magnetic material and has a lower openfaced annular groove


36




a


. The coil winding


38


is applied with electric current from an external power supply by way of harness wires


37


. The coil winding


38


is mounted on a bobbin


39


and is accommodated in the annular groove


36




a


. The opening of the annular groove


36




a


is closed by an annular metal plate


48


and a friction plate


40


in such a manner that the friction plate


40


projects slightly beyond the bottom of the core


36


.




A shaft


43


is journalled in the electromagnetic coil winding device


35


via a pair of axially spaced bushes


81




g


,


81




f


. The shaft


43


is so positioned as to traverse the accommodating space E after passing through the bracket


34


and the housing


81




a


. One end side portion


43




a


of the shaft


43


is journalled in the cover


84


via a bush


81




g


, and an intermediate portion


43




b


of the shaft


43


around which the coil winding device


35


is positioned is journalled in both the bracket


34


and the housing


81




a


via a bush


81




h


. The shaft


43


is provided with a serration portion


43




c


between the end portion


43




a


and the intermediate portion


43




b


, and is located within the accommodating space E. The other end portion of the shaft


43


defines another serration portion


43




d


located adjacent or next to the intermediate portion


43




b.






A brake gear


44


is mounted on the serration portion


43




c


of the shaft


43


and is thus rotated together with the serration portion


43




c


. A driven gear


45


is positioned in the accommodating space E. The driven gear


45


is fixedly mounted on a pin


45




a


whose opposite end portions are journalled in the housing


81


and the cover


84


respectively. The driven gear


45


is positioned in opposition to the brake gear


44


. The brake gear


44


is in indirect meshing engagement with the driven gear


45


via the geared cable


6


which extends through the accommodating space E.




An armature


46


is mounted on the serration portion


43




d


of the shaft


43


so that the armature is movable along the serration portion


43




d


of the shaft


43


and is rotatable together with the serration portion


43




d


of the shaft


43


. The armature


46


is formed of a magnetic material and is configured as a circular plate.




The armature


46


is urged continually by a spring


47


that is arranged around the shaft


43


so that the armature


46


is in slight face-to-face contact with the friction plate


40


.




When the coil winding


38


of the coil winding device


35


is energized, a magnetic closed loop is formed which passes through the coil winding


38


, the core


36


and the armature


46


, thereby generating an electromagnetic force which attracts the armature toward the rotor


36


. Thus, the armature


46


moves along the shaft


43


toward the core


36


so that the armature


46


is strongly brought into engagement with the friction force


40


, thereby imparting a large friction force acting as a brake force to the armature


46


under rotation. When the coil winding


38


of the coil winding device


35


is de-energized, there is no magnetic attraction force which attracts the armature toward the core


36


, thus allowing the armature


46


to rotate freely relative to the friction plate


40


. The reason is that between the friction plate


40


and the armature


46


under rotation, there is a very small amount of friction force which is unable or insufficient to brake the friction plate


40


.




The operation of the brake device


99


in conjunction with the movement of the slide door


1


is as follows. While the slide door


1


is moving, the geared cable


6


is also moving in one direction (or the other direction), and the meshing engagement between the geared cable


6


and the brake gear


44


causes the brake gear


44


, the shaft


43


, and the armature


46


to rotate.




When the slide door


1


is moving by virtue of either the driving operation of the driving device


8


, manual operation, or gravity unexpectedly applied to the slide door


1


when the vehicle is parked on a slanted or sloping road, the CPU


141


calculates the sliding speed of the slide door


1


on the basis of the signals issued from the sensor


32


. If the detected sliding speed of the slide door


1


exceeds a predetermined value, the coil winding


38


of the coil winding device


35


is energized, and an immediate and strong engagement of the armature


46


with the friction plate


40


occurs, thereby generating a very large friction force between the armature


46


and the friction plate


40


. Thus, with little time lag, a braking force is applied to the slide door


1


.




The foregoing operation of the brake device


99


is under the control of the CPU


141


. The control device


100


allows the operator to move the slide door


1


in a smooth manner when the slide door


1


is moved in the manual mode.




In addition, in the case where no driving device


8


is provided to the vehicle


1


, the brake device


99


can be applied thereto. That is to say, solely the use of the brake device


99


can be employed. In this structure, the magnet


31


is positioned on the armature


46


and the sensor


32


positioned in opposing relation thereto detects the rotational condition of the armature


46


for determining the sliding speed, the sliding direction, and the current position of the slide door


1


.




In accordance with the present invention, the vehicular slide door apparatus includes a brake device provided at the lateral side of the vehicle body for applying a brake force to the slide door. Thus, the sliding speed of the slide door can be adjusted or controlled. If the vehicle is parked on a slanted or sloping road, the slide door is prevented from moving at a high speed. If the slide door begins to slide unexpectedly, the movement of the slide door is stopped or slowed, thus ensuring safe operation of the slide door. In addition, controlling the brake device in a suitable manner ensures that safe and smooth manual operations of the slide door are compatible.




Moreover, controlling the brake device in a suitable manner also ensures the switching operation of the clutch mechanism. In situations where the slide door is in an automatic operation mode, the slide door can be prevented from being moved when the window of the slide door is in the opened condition.




The principles, preferred embodiment and modes of operation of the present invention have been described in the foregoing specification. However, the invention which is intended to be protected is not to be construed as limited to the particular embodiment described. Further, the embodiment described herein is to be regarded as illustrative rather than restrictive. Variations and changes may be made by others, and equivalents employed, without departing from the spirit of the present invention. Accordingly, it is expressly intended that all such variations, changes and equivalents which fall within the spirit and scope of the invention be embraced thereby.



Claims
  • 1. A vehicular slide door apparatus comprising:a plurality of guide rails mounted on a lateral side of a vehicle body; a slide door mounted on the guide rails for sliding movement in a lengthwise direction of the vehicle body between a fully open position and a fully closed position; cable connected to the slide door; a brake device operatively associated with the cable for applying a brake force to the cable during sliding movement of the slide door from the fully open position towards the fully closed position to control movement of the slide door during movement from the fully open position towards the fully closed position, the brake device including a shaft, an armature mounted on the shaft to rotate together with the shaft, an electromagnetic coil winding device opposing the armature, and a friction plate secured to the electromagnetic coil winding device and engageable with the armature; and a brake gear mounted on the shaft for rotating together with the shaft, said brake gear engaging the cable.
  • 2. The vehicular slide door apparatus as set forth in claim 1, including a drive device operatively associated with the cable, and a clutch mechanism for alternatively establishing and interrupting a coupling between the slide door and the drive device.
  • 3. The vehicular slide door apparatus as set forth in claim 2, wherein the brake device is mounted on the drive device.
  • 4. The vehicular slide door apparatus as set forth in claim 1, including a drive device operatively associated with the slide door to move the slide door between the fully closed position and the fully open position.
  • 5. The vehicular slide door apparatus as set forth in claim 4, including a clutch mechanism for alternatively establishing and interrupting a coupling between the slide door and the drive device.
  • 6. The vehicular slide door apparatus as set forth in claim 1, including a spring which urges the armature toward the friction plate.
  • 7. A vehicular slide door apparatus comprising:a slide door movable along a lengthwise direction of a vehicle body for opening and closing an opening area formed in a lateral side of the vehicle body; and a brake device provided at the lateral side of the vehicle body for applying a brake force to the slide door by way of an elongated member which moves together with the slide door, the brake device including a shaft, an armature mounted on the shaft to move along the shaft and rotate together with the shaft, an electromagnetic coil winding device opposing the armature, and a friction plate secured to the electromagnetic coil winding device and engageable with the armature.
  • 8. The vehicular slide door apparatus as set forth in claim 7, including an electrically operated drive device operatively associated with the elongated member, and a clutch mechanism for alternatively establishing and interrupting a coupling between the slide door and the electrically operated drive device.
  • 9. The vehicular slide door apparatus as set forth in claim 8, wherein the brake device is mounted on the electrically operated drive device.
  • 10. The vehicular slide door apparatus as set forth in claim 7, including a spring which urges the armature toward the friction plate.
Priority Claims (1)
Number Date Country Kind
10-355196 Dec 1998 JP
US Referenced Citations (7)
Number Name Date Kind
4984385 De Land Jan 1991
5140316 De Land et al. Aug 1992
5913563 Wantanabe et al. Jun 1999
6009671 Sasaki et al. Jan 2000
6087794 Kawanobe Jul 2000
6119825 Nisley Sep 2000
6125583 Murray et al. Oct 2000
Foreign Referenced Citations (4)
Number Date Country
0199722 Oct 1985 JP
9-4323 Jan 1997 JP
10-8828 Jan 1998 JP
10-18708 Jan 1998 JP