Information
-
Patent Grant
-
6270149
-
Patent Number
6,270,149
-
Date Filed
Tuesday, November 30, 199925 years ago
-
Date Issued
Tuesday, August 7, 200123 years ago
-
Inventors
-
Original Assignees
-
Examiners
- Dayoan; D. Glenn
- Engle; Patricia
Agents
- Burns, Doane, Swecker & Mathis, LLP
-
CPC
-
US Classifications
Field of Search
US
- 296 155
- 049 360
- 049 138
- 303 61
-
International Classifications
-
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)
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 |