Patent Application
20100287838
The present disclosure relates to vehicle closures having an openable window pane, and more particularly relates to an improved sensor assembly and method for detecting or sensing the position of an openable pane in a sliding vehicle door.
Sliding doors on vehicles are increasingly equipped with a glass window pane that is openable. More particularly, the window pane of these types of sliding doors can move up and down as desired. Movement of the window pane can be controlled by a window regulator, such as an x-type window regulator.
One concern with these types of doors having openable window panes is the need to prevent or limit opening of the sliding door when the door's window pane is open. This is necessary to prevent a person or object from being caught between the door sash framing the open window and the body pillar that forms a side of the door opening in the situation where the person or object extends through the opening vacated by the window pane.
One prior art design allows a sliding vehicle door to completely open when the door pane is completely closed or when the door pane is opened less than a predetermined amount, such as an amount less than would allow a passenger head to stick out the open window. When the window is open beyond this predetermined amount, the slide door is prevented from being fully opened by a door stopper mechanism. See, for example, U.S. Pat. No. 6,477,806, expressly incorporated herein by reference.
According to one aspect, an improved door pane position sensor assembly is provided. More particularly, in accordance with this aspect, the door pane position sensor assembly includes a main lift arm supporting a pane in a vehicle door. The main lift arm includes a sector gear portion for being driven to rotate the main lift arm. A drive mechanism is operatively engaged with the sector gear portion for rotating the main lift arm in a first rotatable direction to move the pane toward a closed position and a second rotatable direction to move the pane toward an open position. A cam channel is defined in the sector gear portion including a first channel portion and a second channel portion. A sensor mechanism having a follower is received in the cam channel. The follower moves along the cam channel as the main life arm rotates to move the pain toward the open and closed positions. The follower moves the sensor mechanism toward a first position when the follower is moved into the first channel portion of the cam channel and toward a second position when the follower is moved into a second channel portion of the cam channel.
According to another aspect, an improved sensor assembly is provided for detecting the position of an openable pane in a slide door of a vehicle. More particularly, in accordance with this aspect, the sensor assembly includes a window regulator mechanism including a main lift arm supporting the pane and a drive mechanism for moving the pane in downward and upward directions when the drive mechanism rotates the main lift arm in opposite directions to effect opening and closing of a window portion of the slide door. The main lift arm includes a sector gear plate at one end thereof for being drivingly rotated by the drive mechanism with the sector gear plate having a slot defined therein. A sensor mechanism has a guide received in the slot for moving along the slot as the main lift arm is rotated. The slot has a first portion that moves the guide into a first position when the guide is received in the first portion and has a second portion that moves the guide into a second position when the guide is received in the second portion.
According to still another aspect, a method of sensing window pane position in a sliding vehicle door is provided. More particularly, in accordance with this aspect, a sector gear portion of a main lift arm is drivingly rotated. An opposite end of the main lift arm is connected to a lower side of a window pane. A follower is moved along a cam channel defined in the sector gear portion as the sector gear portion is rotated. The cam channel has a first channel portion and a second channel portion. The follower is moved into the first channel portion when the sector gear portion is driven in one rotatable direction to move the window pane toward a closed position and moved into the second channel portion when the sector gear portion is driven in an opposite rotatable direction to move the window pane toward an open position.
According to a further aspect, a sliding door assembly has an assembly for sensing the position of door window glass and if the door window glass is open below a certain threshold, the sliding door is prevented from opening completely. A window regulator for opening and closing the window glass can be an X-type regulator having a main guide rail for supporting the window pane and a sub-guide rail attached to a door panel. The rails can be connected together with a main lift arm and two sub-lift arms in an X-configuration. The main lift arm is attached to or formed integrally with a sector gear that is connected to a motor for applying a motive force to the gear for raising and lowering the window glass.
Referring now to the drawings, wherein the showings are for purposes of illustrating one or more exemplary embodiments, a door pane position sensor assembly 10 is illustrated for detecting the position of an openable window pane 12 in a slide door 14 of a vehicle 16, otherwise known as a sliding vehicle door. The illustrated vehicle 16 is a van-type vehicle (e.g., a mini-van), though only the rear portion thereof is shown. A door opening 18 is formed in at least one lateral side of the vehicle 16 to permit passengers or occupants to enter and/or exit a rear portion of the vehicle. The slide door 14 selectively closes the opening 18 as is known and understood by those skilled in the art. If desired, the slide door 14 can be a powered door that is optionally opened and/or closed by a motor.
The openable window pane 12 is movable in upward and downward directions by a window regulator mechanism 20 that is mounted within the vehicle door 14. The window regulator mechanism 20 includes a main lift arm 26 that supports the pane 12 in the vehicle door 14. The window regulator mechanism 20 further includes a drive mechanism 28 for moving the pane 12 in downward and upward directions when the driving mechanism 28 rotates the main lift arm 26 in opposite directions to effect opening and closing of window portion 14a of the door 14. The main lift arm 26 can include a sector gear portion or plate 30 at one end thereof that can be driven by the drive mechanism 28 to rotate the main lift arm 26 about pivot 32. The pivot 32, about which the main lift arm 26 is rotatable, is fixably secured to the slide door 14 and thus connects the main lift arm 26 to the vehicle door 14.
The drive mechanism 28 is operatively engaged with the sector gear portion 30 for rotating the main lift arm 26 in a first rotatable direction about pivot 32 (i.e., counter-clockwise in
The window regulator mechanism 20 of the illustrated embodiment is an x-link window regulator, which includes first and second sub arms 50, 52 pivotally connected to the main lift arm 26 at floating pivot 54 (i.e., pivot 54 is not fixedly connected to the vehicle door 14, but instead floats relative to the door as the window regulator mechanism opens and closes the window pane 12). In particular, the first sub arm 50 and the main lift arm 26 have respective ends pivotally connected to a lower end 56 of the openable pane 12. That is, a first end 58 of the sub arm 50 is pivotally connected to the lower end 56 of the window pane and likewise the end 60 of the main lift arm 26 opposite the sector gear portion 30 is pivotally connected to the lower end 56 of the window pane 12.
Specifically, the ends 58, 60 of the arms 50, 26 are slidably disposed within a track member 62 (also referred to herein as a main guide rail), which is itself securely connected to the lower end 56 of the window pane 12 by brackets 64 and suitable fasteners 66, though other connection arrangements could easily be employed. The ends 58, 60 of the arms 50, 26 include pins 68 received in the track member 62 for sliding movement therealong as the window 12 pane is opened and closed. The second, opposite end 70 of the first sub arm 50 is pivotally connected to the main lift arm 26 at the floating pivot 54. The second sub arm 52 has one end (first end) 72 pivotally connected at a vertically fixed location to the door 14. More specifically, the end 72 includes a pin 74 slidably received within a track member 76 (also referred to herein as a sub guide rail), which is itself fixedly attached to the vehicle door 14. A second, opposite end 78 of the sub arm 52 is pivotally connected to the main lift arm 26 at the floating pivot 54. The pivot 32 pivotally connects the main lift arm 26 to the vehicle door 14 at a fixed location, which is disposed between a location (i.e., pivot 54) where the sub arms 50, 52 pivotally connect to the main lift arm 26 and the sector gear portion or plate 30.
The pivot 32, which provides a fixed pivot location at which the main lift arm 26 is pivotally connected to the vehicle door 14, is disposed between the ends 30, 60 of the main lift arm 26 such that the sector gear portion 30 is entirely disposed on one side of the fixed pivot location (i.e., pivot 32) along the main lift arm 26. As shown, the second end 60 of the main lift arm 26 is pivotally connected to the track member 62 that carries the lower end 56 of the window pane 12. The first sub lift arm 50 has one end (end 70) pivotally connected to the main lift arm 26 at a sub arm pivot location (i.e., floating pivot 54) between the fixed pivot location, (i.e., pivot 32) and the second end 60. The other end 58 of the arm 50 is pivotally connected to the track member 62 at a location spaced apart from where the main lift arm 26 pivotally connects to the main guide rail 60. The second sub lift arm 52 has one end 78 pivotally connected to the main lift arm 26 at the sub arm pivot location (i.e., floating pivot 54) and it has its second end 72 pivotally connected to the vehicle door 14 at a vertically fixed location via the track member 76.
As illustrated, a cam channel or slot 86 can be defined in the sector gear portion or plate 30. In particular, the cam channel or slot 86 is defined by sidewalls 88 extending through the sector gear portion or plate 30 from a first surface 30a of the sector gear portion or plate 30 to a second, opposite surface 30b of the sector gear portion or plate 30. The cam channel or slot includes a first channel portion 90 and a second channel portion 92. A sensor mechanism 94 has a follower or guide 96 received in the cam channel or slot 86 for moving along the channel or slot as the main lift arm 26 is rotated (i.e., the follower or guide 96 moves along the cam channel or slot 86 as the main lift arm 26 rotates to move the window pane 12 toward its open and closed positions). As will be described in more detail below, the follower or guide 96 moves the sensor mechanism 94 toward a first position when the follower or guide 96 is moved into the first channel portion 90 and moves the sensor mechanism 94 toward a second position when the follower or guide 96 is moved into the second channel portion 92 of the cam channel or slot 86.
The first channel portion 90 corresponds to the window pane 12 being in or between an intermediate position and its closed position and the second channel portion 92 corresponds to the window pane 12 being in or between an intermediate position and its open position. Accordingly, the sensor mechanism 94 is in the first position when the pane 12 is between an intermediate position and the closed position and in the second position when the pane 12 is between an intermediate position and the open position.
The guide or follower 96 can be a guide roller received through the single plate forming the sector gear portion 30. The guide roller 96 is guided within the channel or slot 86 by opposing sidewalls 88 of the cam channel or slot 86 which function to maintain the guide roller 96 in contact with the sector gear portion or plate 30. In the illustrated embodiment, the guide roller 96 is formed as a spool with a central portion 98 flanked by a pair of radially enlarged portions 100 which maintain the follower or guide 96 within the cam channel or slot 92. Thus, the central portion 98 of the guide roller 96 forms a radial engaging surface that is maintained in contact with the sector gear portion or plate 30 by the sidewalls 88 defining the cam channel or slot 86. As will be appreciated and understood by those skilled in the art, the first channel portion 90 moves the guide 96 into a first position when received in the first channel portion 90 and moves the guide 96 into a second radially offset position when received in the second channel portion 92.
The sensor mechanism 94 further includes a rod 102 connected to the guide roller 96 and slidably connected to the sector gear portion 30 by holder 112. More specifically, the rod 102 has an end portion 104 to which the guide roller 96 is secured and an extending portion 106 which extends in a direction approximately parallel to the sector gear portion or plate 30 (e.g., either surface 30a or 30b of the sector gear portion or plate) and is oriented approximately perpendicular or normal relative to the end portion 104. In the illustrated embodiment, the end portion 104 of the rod 102 forms a first bent end of the rod 102 that carries the guide roller 96 and, as is described in more detail below, a second opposite end 108 of the rod is operatively engaged or connected with a stopper mechanism 110.
When the follower guide 96 is moved to its first position by the first channel portion 90, the guide 96 causes the rod 102 to move to a corresponding first position. Similarly, the guide 96 moves to its second position when in the second channel portion 92 and causes the rod 102 to move a corresponding second position. These first and second corresponding positions of the rod 102 are linearly spaced apart from one another along an axis defined by a longitudinal length of the rod 102, or at least a longitudinal length of the rod 102 adjacent to the end portion 104. As will be appreciated and understood by those skilled in the art, the guide 96 mechanically communicates with the stopper mechanism 110 through the rod 102 and the stopper mechanism 110 can be appropriately configured to prevent the slide door 14 from fully opening or moving to a fully open position when the rod 102 is in the second position (i.e., the rod mechanically communicating that the guide 96 is likewise in its second position as a result of being received in a second portion 92 of the cam channel or slot 86), while allowing the door 14 to fully open when the rod 102 is in the first position.
With particular reference to
As best shown in
More specifically, the guide or follower 96 is moved into the second channel portion 92 when the sector gear portion 30 is driven in the first rotatable direction beyond the position illustrated in
Upon passing this transition portion 114, the rod 102 is moved to its second position by the second channel portion 92 which is radially displaced toward the sector gear teeth 34 relative to the first channel portion 90. In the second position, the rod 102 mechanically communicates to the stopper mechanism 110 that the window has been opened beyond a predetermined position. The predetermined position can vary from the illustrated embodiment, but is generally selected to correspond to a position beyond which it is not deemed safe to allow the sliding door 14 to open. Accordingly, the stopper mechanism 110 will prevent fully opening of the door 14 when the rod 102 is in its second position, as illustrated in
The result of further rotation of the main lift arm 26 is illustrated in
The exemplary embodiment has been described with reference to the preferred embodiments. Obviously, modifications and alterations will occur to others upon reading and understanding the preceding detailed description. It is intended that the exemplary embodiment be construed as including all such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
