JP2009068176A - Door opening/closing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a door opening/closing device for back doors capable of letting the back doors open immediately by inverting the rotation of a motor from the direction for closing the door into the direction for opening the door in a self-closing region of the door. <P>SOLUTION: In this door opening/closing device, an opener operation lever 6 is arranged by crossing a side of a central shaft 7 and a part above a driving gear 4 to support the basal end turnably through a support shaft 10 being separate from the central shaft 7. A cam part 21 abutted on a gear projection 13 provided on the driving gear 4 and turning the opener operation lever 6 to an operation position in both cases of rotation into the direction for opening door and rotation into the direction for closing door of the driving gear 4 is provided at a side fringe facing the central shaft 7. While the door is being closed, the rotation of the driving gear 4 is inverted from the direction for closing door into the direction for opening door in accordance with signals detected by a pressure sensitive sensor detecting load due to the contact with an obstacle, and the opener operation lever 6 is turned to the operation position due to abutting of the gear projection 13 on the cam part 21 by rotation and moving to open the door by the operation of an opener 34. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a door opening / closing device that is electrically and manually used to open and close a door, which is used for a flip-up back door provided at the rear of an automobile.

  Conventionally, a door opening / closing mechanism has been proposed that automatically pops up when the door lock is released, closes by winding the cable with a winding motor, and can also be manually opened and closed ( For example, see Patent Document 1).

  The door opening and closing device described in Patent Document 1 opens and closes a door by performing a door pulling cable having a length equal to or longer than the opening and closing angle of the door, and rewinding and winding the door pulling cable. A drum and a drive gear connected to the output shaft of the motor are provided, and the drum and the drive gear are arranged so that their rotation surfaces face each other, and the drum is provided with a drum projection on the opposite rotation surfaces and driven. A gear projection is provided on the gear, and the gear projection comes into contact with the drum projection from opposite directions, so that the rotational force of the drive gear is transmitted to the drum to rotate forward and backward, thereby opening and closing the door electrically. On the other hand, when the drive gear is stopped, the door traction cable can be opened and closed using the area where the drum can rotate freely without the drum protrusion and the gear protrusion coming into contact with each other. By returning winding-up the length corresponding to the time, it is obtained by allowing the door manually.

  The door opening and closing device described in Patent Document 1 can open and close the door either electrically or manually without switching by an electromagnetic clutch or the like, so that the number of components is small, light weight and low cost, and the device Most of the members can be mounted on the door, so that the opening / closing drive mechanism can be easily mounted on an existing vehicle compared to a type in which the opening / closing drive mechanism is mounted on the vehicle body (for example, see Patent Document 2), and is highly versatile .

In the door opening and closing device described in Patent Document 1, opening assist means and closing assist means such as a gas stay or a torsion spring are interposed between the door and the vehicle body. When the door is electrically closed, the motor is reversed. By driving and winding the cable around the drum, the door is closed from the fully open position. When the door reaches the neutral position (the neutral position in the operation of the opening assist means and the closing assist means), the motor is temporarily stopped, and thereafter Is automatically closed by the retracting operation of the closing assist means. When the door is closed and the half latch state is reached, the half latch switch is operated, and finally the door lock device is closed and the full lock state is drawn.
ing.

  On the other hand, the door opening and closing device described in Patent Document 2 detects an obstacle present not only on the door opening direction side but also on the door closing direction side, and prevents interference between the door and the obstacle. It has become. This is an open / close drive mechanism that opens and closes a door that can be opened and closed on the vehicle body (the power of the electric motor is transmitted to the pinion through the clutch, and the rack is moved forward and backward by driving the pinion in the forward and backward direction to move the door forward and backward. A first detection means (a rotary encoder provided in the opening / closing drive mechanism) for detecting the position of the door, and a movement of the door on the opening direction side and the closing direction side attached to the vehicle body Second detection means for detecting the position of the obstacle in the trajectory (parking support back sonar as a rear monitoring sensor for detecting the position of the obstacle located behind the vehicle body using ultrasonic waves), and second detection Setting means for setting the openable range and the closeable range of the door according to the position of the obstacle detected by the means, and the position of the door detected by the first detecting means when the door is opened Control for controlling the opening / closing operation mechanism so as not to exceed the openable range, and for controlling the opening / closing operation mechanism so that the position of the door detected by the first detection means does not exceed the closeable range when the door is closed. Means (controller), and when the door is about to be opened and closed beyond the openable range or the closeable range, the door is forcibly stopped by stopping the motor with the clutch connected. It is intended to stop.

JP-A-2005-330724 JP 2005-336934 A

  The conventional door opening and closing device described in Patent Document 1 is configured such that when an obstacle is detected in the closing movement locus of the door during the closing of the door and before the door reaches the neutral position, the motor When the cable is rotated forward and the cable is fed out from the drum, the opening assist means performs an extension operation, so that the door is immediately opened and interference with an obstacle can be avoided.

  However, in the conventional door opening and closing device described in Patent Document 1, when the presence of an obstacle is detected in the closing locus of the door at the position where the door has passed the neutral position during the closing of the door, Although it is necessary to stop the door closing operation, even if the motor is rotated forward and the cable is fed out from the drum, the door may immediately start to open because the closing assist means is retracting. There was a problem that it was not possible.

  Therefore, the present invention has an object to solve the above-described problems of the prior art, and when the back door is electrically closed, the door is closed (the operation area of the closing assist means) (the door). Until the door is pulled in), if the obstacle is detected, the motor rotation is immediately reversed from the door closing direction to the door opening direction. The present invention provides a door opening / closing device for a back door in which the door turns to an opening operation.

The door opening and closing device according to claim 1 is a closure that shifts the locking means from the half latched state to the full latched state, and the door that is in the closed position when the locked state is released by the locking means to the door opening operation start position. An opener that automatically opens to open the door, and an opening assist means that automatically opens the door that has been opened to the opening operation start position to the fully opened state, and the door that has been closed to the closing operation start position with respect to the fully opened state is half-latched A closing assist means for automatically closing the door to a state, provided for a flip-up type door provided with,
A door pulling cable having a length equal to or greater than the opening / closing angle of the door, a drum that opens and closes the door pulling cable and opens and closes the door, and a rotating surface of the drum are arranged opposite to each other. , A drive gear that can be driven to rotate in both the door opening direction and the door closing direction by a motor that can rotate forward and reverse, a central shaft that rotatably supports the drum and the drive gear, and rotation of the drive gear An opener actuating lever for actuating the opener, drum protrusions projecting from the drum on opposite rotating surfaces of the drum and the drive gear, and the drum as the drive gear rotates in the door closing direction. An engagement member that engages with the protrusion, and when the engagement member engages with the drum protrusion, the rotation of the drive gear is transmitted to the drum to pull the door. Winding the cable is performed be one that is configured to close the door,
In order to solve the above-described problem, the drive gear is provided with a gear protrusion that contacts the opener operating lever, and the opener operating lever is disposed laterally of the center shaft and across the drive gear. A base end is pivotally supported via a support shaft provided separately from the shaft, and an opener operating cable is connected to the tip, and the drive gear is disposed on a side edge facing the central axis of the opener operating lever. In either case of rotating in the door opening direction or rotating in the door closing direction, a cam portion is provided that contacts the gear projection and rotates the opener operating lever to the operating position. When the gear rotates in the door closing direction, the engagement member is moved from an initial position where engagement with the drum protrusion is impossible to an engageable position where engagement with the drum protrusion is possible. A moving member that is provided on the door frame, and a pressure-sensitive detection means that detects a load caused by contact with an obstacle, and the engagement member and the drive gear as the drive gear rotates in the door opening direction. When the engagement with the drum protrusion is disengaged, a retracting movement member that retracts the engagement member from the track of the drum protrusion, and
When the pressure sensor detects a load during the door closing operation, the rotation of the drive gear is reversed from the door closing direction to the door opening direction according to a detection signal of the pressure sensor, and the gear protrusion The opener operating lever is rotated to the operating position by contact with the cam portion by the rotational movement of the opener, and the door is opened by the operation of the opener.

  A door opening / closing device according to a second aspect is the door opening / closing device according to the first aspect, wherein the gear projection is applied to the cam portion by the rotational movement of the gear projection in the door closing direction while the drive gear is rotating in the door closing direction. The opener operating lever is rotated to the operating position by contact, and the retracting operation force of the closing assist means is braked by the push-up force of the opener.

  According to the door opening and closing device of the first aspect, when an obstacle is detected by the pressure sensor until the door is closed (immediately before the door is retracted) in the self-closing region of the door (operation region of the closing assist means). Immediately reverse the rotation of the drive gear driven by the motor from the door closing direction to the door opening direction to rotate the opener operating lever to the operating position, and the operation of the opener immediately turns the door to the door opening operation. Can do.

  According to the door opening and closing apparatus according to the second aspect, since the braking force is applied to the retracting operation force of the closing assist means by the pushing force to the door by the operation of the opener, it is possible to avoid the door from being suddenly closed. In addition, the drum is rotated in the door closing direction only by the rotational force of the drive gear, and the door closing operation can be performed gently by setting the rotation speed of the drive gear to be slow.

  Hereinafter, an embodiment of a door opening and closing device for opening and closing a flip-up back door of an automobile according to the present invention will be described with reference to the drawings. FIG. 1 is a front view showing a rear part of an automobile provided with a flip-up back door according to an embodiment of the present invention, and FIG. 2 is a side view seen from one side of the rear part of the automobile.

  As shown in FIGS. 1 and 2, the door 60 is pivotally attached to the upper end of the opening of the vehicle body 70 via a hinge 30, and the door 60 is attached to the vehicle body 70 at the lower end of the door 60 and the lower end of the door opening of the vehicle body 70. On the other hand, a door lock device 31 that locks in the closed state is disposed, and a lock means provided in the door lock device 31 by driving the door opening and closing device 1 that opens and closes the door 60 and the closure motor 33 is disposed near the lower part of the center of the door 60. A closure 32 is provided for shifting (not shown) from the half latch state to the full latch state. The door 60 and the vehicle body 70 have, for example, a torsion spring, an opener 34 (see FIG. 1) for opening the fully closed door 60 to a predetermined angle, and an opening assist means including a gas stay 36, Close assist means is interposed (see FIG. 2).

  As shown in FIG. 2, when the opener 34 is operated, the door 60 is pushed up from the fully closed state to the door opening operation start position of the opening assist means. When the door 60 opens to the opening operation start position of the opening assist means, the opening assist means functions, and the door 60 is automatically opened to the fully opened state by the extension operation. On the other hand, when the fully opened door 60 is closed to a predetermined angle (the closing operation start position of the closing assist unit), the closing assist unit functions, and the retracting operation automatically closes the door 60 to the fully closed state. Yes. Thus, providing the opener 34, the opening assist means, and the closing assist means in the flip-up type door 60 is a known technique as disclosed in, for example, Patent Document 1. Although not shown in the drawing, pressure sensing means (pressure sensor) for detecting a load caused by contact with an obstacle is provided on the outer peripheral portion of the back door facing the door opening of the body 70 of the frame of the door 60. Is provided.

  Further, the main structure of the door lock device 31 is conventionally well known as disclosed in, for example, Japanese Patent Application Laid-Open No. 12-27511 and Japanese Patent Application Laid-Open No. 2000-204812. It rotates to a half latch state and is caught by a striker provided on the vehicle body 70. Further, the closure 32 rotates the latch of the door lock device 31 from the half latch state to the full latch state by the operation of the closure motor 33, and pulls the striker to lock it. Further, the door lock device 31 reverses the latch in the full latch state at once and unlocks it (full open state).

  FIG. 3 is a front view of the door opening and closing device 1. As shown in FIGS. 1 and 3, the door opening / closing device 1 is provided with a door pulling cable 2 having a length equal to or longer than the opening / closing angle of the door 60, and the door pulling cable 2 being fed and wound. A drum 3 that opens and closes 60 (see FIG. 3), a drive gear 4 that can be driven to rotate in both a door opening direction and a door closing direction around a central axis 7 common to the drum 3; A motor 5 that rotates in both forward and reverse directions and an opener operating lever 6 for operating the opener 34 are provided. As will be described later, the drum 3 and the drive gear 4 share a central axis 7 and are parallel to each other. And it is installed so that rotation is possible (refer FIG. 7).

  The drum 3 rotates in the forward direction (rotation in the opening direction, counterclockwise in FIG. 3) to feed out the door pulling cable 2, and rotates in the reverse direction (rotation in the closing direction, clockwise in FIG. 3) to rotate the door pulling cable 2. Wind up. As shown in FIG. 1, the terminal end of the door pulling cable 2 is connected to the vehicle body 70 via a pulley 35 installed on the door 60, and when the drum 3 is reversed and the door pulling cable 2 is wound up, Is towed and closed. The drum 3 is provided with an urging spring 8 for urging in the reverse direction (door closing direction) in order to wind up the door pulling cable 2 so as not to loosen when the door 60 is manually closed (FIG. 3). reference).

  As shown in FIG. 3, the opener operating lever 6 is rotatable at a base end thereof via a support shaft 10 provided separately from the central shaft 7 that forms the rotation center of the drum 3 and the drive gear 4. Is provided. One end of an opener operating cable 9 is connected to the tip of the opener operating lever 6 (see FIG. 3), and the other end of the opener operating cable 9 is connected to an opener 34 (see FIG. 1). When the opener operating lever 6 rotates in the door opening direction (counterclockwise direction in FIG. 3), the opener operating cable 9 is pulled, whereby the opener 34 is operated to open the door 60 at a predetermined angle (opening of the opening assist means). The door is opened up to the door operation start position (see FIG. 2). Further, the movable range of the opener operating lever 6 is restricted between the normal standby position and the operating position for operating the opener 34, and after the opener operating lever 6 reaches the restricted position on the forward rotation side (door opening direction). The reverse rotation by the biasing force of the biasing spring 11 returns to the standby position, and the opener 34 also returns to its original position.

  Next, the principal part of the door opening and closing apparatus 1 will be described. FIG. 4 is a front view showing a main part of the door opening and closing device 1. In FIG. 4, the door pulling cable 2 and the drum 3 are removed, and the origin position of the operation in the opening direction and the operation in the closing direction by the rotation of the drive gear 4 is taken. 5 is an enlarged front view showing a main part of the door opening and closing device 1, FIG. 6 is a sectional view taken along line AA in FIG. 5, and FIG. It is sectional drawing broken and shown by the BB line in FIG.

  As shown in FIGS. 4 to 7, the door opening and closing device 1 is in any case when the drive gear 4 rotates in the door opening direction (counterclockwise) and in the door closing direction (clockwise). A gear protrusion (sleeve 13) that contacts the opener operating lever 6 and rotates the opener operating lever 6 to the operating position, and an engaging member (hook) that engages with the drum protrusion 14 as the drive gear 4 rotates in the door closing direction. When the member 15) and the drive gear 4 are rotated in the door closing direction, the hook member 15 is moved from the initial position where the engagement with the drum protrusion 14 is impossible to the engageable position where the engagement with the drum protrusion 14 is possible. A moving member (a cam portion 17 of the hook guide member 16) that moves the hook member 15 is provided.

  Reference numeral 12 denotes a base for attaching the door opening / closing device 1 to the door 60, the drive gear 4 is disposed on the upper surface of the base 12, the drum 3 is disposed above the drive gear 4, and the drive gear 4 and the drum 3. Are provided so as to be rotatable in parallel with each other while sharing the central axis 7 (see FIG. 7). Further, as shown in FIGS. 4 to 6, a drum that protrudes downward from the lower surface of the drum 3 toward the outer side in the radial direction of the drum 3 (projects toward a rotating surface facing the drive gear 4). A protrusion 14 is provided. As shown in FIG. 6, the lower end of the drum protrusion 14 is positioned above the opener operating lever 6 so as not to interfere with the rotating operation of the opener operating lever 6.

  As shown in FIG. 3, the drive gear 4 includes a pinion 51 fixed to an output shaft 50 of a drive device including a motor (configured by a pulse motor) 5 capable of rotating in the forward and reverse directions and a reduction gear group (not shown). Engaged, the motor 5 rotates forward and backward as the motor 5 rotates forward and backward. That is, the drive gear 4 is rotationally driven in the door opening direction (counterclockwise in FIG. 3) with the forward rotation of the motor 5, while it is in the door closing direction (clockwise in FIG. 3) with the reverse rotation of the motor 5. Driven by rotation.

  As shown in FIG. 4, the opener operating lever 6 is arranged across the side of the central shaft 7 and the upper side of the drive gear 4 so as to avoid the central shaft 7, and the support shaft 10 provided on the base 12. The base end is pivotally supported via the via. Further, the side edge of the opener operating lever 6 facing the central axis 7 is brought into contact with the gear projection (sleeve 13) with any rotation in the forward or reverse direction of the drive gear 4 so that the opener operating lever 6 is moved to the operating position. The cam part 21 to be rotated is provided (see FIG. 4).

  In addition, as shown in FIG. 7, a thin plate-like hook base 18 is disposed in parallel between the drive gear 4 and the drum 3, and a hook member 15 is parallel between the hook base 18 and the drum 3. Is arranged. One side of the hook base 18 is inserted through the central shaft 7, and the other side is fixed to the drive gear 4. That is, the sleeve 13 (gear protrusion) is disposed on the outer side of the upper surface of the drive gear 4 in the radial direction, the other end of the hook base 18 is disposed on the upper end of the sleeve 13, and the sleeve 19 is disposed on the upper surface of the hook base 18. The hook member 15 is disposed at the upper end of the sleeve 19, and the hook member 15 is inserted into the base 12 through the hook member 15, the sleeve 19, the hook base 18, and the sleeve 13. 15 is rotatably provided. As a result, the sleeve 13, the hook base 18, and the hook member 15 rotate around the central axis 7 together with the drive gear 4. The sleeve 13 is arranged in the horizontal direction of the opener operating lever 6 in the vertical direction (see FIG. 6), and the gear protrudes toward the track of the opener operating lever 6 when the drive gear 4 rotates in the forward and reverse directions. A protrusion is formed (see FIGS. 4 and 5).

  Further, as shown in FIG. 7, a cam portion 17 of a hook guide member 16 that moves the hook member 15 is inserted into the central shaft 7 and arranged near one end of the upper surface of the hook base 18. The hook guide member 16 generally has a bridge shape that rises from the upper surface of the base 12 outside the drive gear 4 and spans the upper part of the track of the hook member 15 and spans the cam portion 17. A cam portion 17 is integrally formed on the lower surface of one end of the bridging portion 22 of the hook guide member 16 disposed above the track of the hook member 15 (see FIG. 7), and is connected to the other end of the bridging portion 22 of the hook guide member 16. Leg portions 23 are formed downward (see FIG. 5). The drum 3 is disposed on the upper surface of the cam portion 17 of the hook guide member 16 (see FIG. 7), and the leg portion 23 of the hook guide member 16 is fixed to the base 12 (see FIG. 5). As a result, the cam portion 17 of the hook guide member 16 is inserted through the central shaft 7 and fixed in place. An inclined portion 24 that is inclined in the door opening direction toward the radially outer side of the drum 3 is formed on the side edge of the bridging portion 22 facing the door closing direction in the rotation direction of the drum 3. Thus, a stopper portion 25 is configured to contact the base portion of the drum protrusion 14 and restrict the rotation of the drum 3 in the door closing direction (see FIG. 5).

[Hook member 15]
FIG. 8 is a diagram illustrating an operating state of the hook member 15 that rotates and rotates with the rotation of the drive gear 4 and the cam portion 17 of the hook guide member 16 that rotates the hook member 15 about the support shaft pin 20. is there. The hook member 15 is pivotally supported by the pivot pin 20 so that the base end thereof can be rotated with the distal end directed in the door closing direction. At the tip of the hook member 15, a guide protrusion 26 extending in a bowl shape toward the door opening direction is formed, and on the radially inner side adjacent to the guide protrusion 26, the engagement is opened toward the door opening direction. A recessed portion 27 is provided, and a cam follower portion 28 that bulges toward the central shaft 7 is provided on the radially inner side adjacent to the engaging recessed portion 27. Further, a biasing spring (torsion coil spring) 29 is externally attached to the sleeve 19 between the hook member 15 and the hook base 18, and one end of the biasing spring 29 is hooked on the hook member 15. The other end is hooked on the hook base 18. The biasing spring 29 biases the cam follower portion 28 of the hook member 15 toward the cam surface of the cam portion 17. Further, when the engagement of the hook member 15 (engagement member) and the drum protrusion 14 is released along with the rotation of the drive gear 4 in the door opening direction, the biasing spring 29 causes the hook member 15 to move away from the drum protrusion 14. A retraction moving member that retreats from the track is configured.

[Cam part 17]
The cam portion 17 of the hook guide member 16 includes a cam surface that surrounds the central shaft 7. The cam surface is opposed to the small-diameter portion 40 across about 180 degrees with the radial distance from the rotation center of the drive gear 4 being minimized, and the radial direction from the rotation center. The large-diameter portion 41 having a distance of approximately 90 degrees larger than the small-diameter portion, and between the small-diameter portion 40 and the large-diameter portion 41, and continuously from the small-diameter portion 40 to the large-diameter portion 41 in the closing direction And a linear guide portion 43 which is between the small diameter portion 40 and the large diameter portion 41 and continues from the large diameter portion 41 to the small diameter portion 40 in the door closing direction.

  When the cam follower portion 28 of the hook member 15 is in sliding contact with the small-diameter portion 40 of the cam portion 17, the engagement recess 27 of the hook member 15 takes an initial position where it cannot be engaged with the drum protrusion 14. In the initial position, the hook member 15 is retracted from the track of the drum protrusion 14 (see FIG. 8). On the other hand, when the cam follower portion 28 of the hook member 15 is in sliding contact with the large-diameter portion 41 of the cam portion 17, the engagement position where the engagement concave portion 27 of the hook member 15 can engage with the drum protrusion 14 is set. Take it.

  Next, each switch provided in the door opening and closing device 1 will be described. A hook removal position detection switch that detects a position (the state shown in FIG. 14) where the hook member 15 is detached from the drum protrusion 14 as the driving gear 4 rotates in the door opening direction after detecting a half latch state described later. (Not shown) is provided. Further, although not shown, the door lock device 31 is provided with a half latch switch for detecting that the latch has been turned to the half latch state and a full latch switch for detecting that the latch has been turned to the full latch state. .

  In addition, a controller is provided for controlling forward, reverse, and stop of the motor in accordance with the detection signal of each switch. The controller is connected to the motor 5 (pulse motor) for rotationally driving the drive gear 4 and is connected to each of the above switches, that is, a half latch switch and a full latch switch. By the operation, a door opening operation switch and a door closing operation switch for instructing opening or closing are connected. The controller uses the number of pulses output to the motor 5 to determine the origin position of the drive gear 4 (state shown in FIG. 4), the operation position where the opener operating lever 6 operates the opener 34 (state shown in FIG. 10), and The rotation position (hook removal position) of the drive gear 4 where the guide protrusion 26 of the hook member 15 is detached from the drum protrusion 14 is determined.

  The operation of the door opening / closing device 1 relating to the opening / closing of the door 60 configured as described above will be described.

[Manual door opening]
When the closed door 60 is manually opened, the drum protrusion 14 of the drum 3 hits the hook member 15 of the drive gear 4 when the door lock device 31 is unlocked by a key operation or the like and then the door 60 is pushed up. Since the door pulling cable 2 is pulled as the door 60 moves up, the drum 3 rotates forward (rotates in the door opening direction in FIGS. 3 and 4 and rotates counterclockwise). ) And pull out the door pulling cable 2. When the door 60 is fully opened, the drum protrusion 14 of the drum 3 stops at the position shown in FIG. During this time, the drive gear 4 and the opener operating lever 6 do not move. The above operation is the same as the conventional operation.

[Manual door closing]
When the door 60 in the fully open state is manually closed, the drum protrusion 14 of the drum 3 is not restricted from being reversely rotated, so that the drum 3 is reversely rotated by the force of the biasing spring 8 as the door pulling cable 2 is loosened (FIG. 3). The door pulling cable 2 is wound up. When the door 60 is closed and the half latch state is established, the drum protrusion 14 of the drum 3 returns to the origin position shown in FIG. 4, and the rotation of the drum 3 in the door closing direction is stopped, and the half latch switch of the door lock device 31 is detected. A signal is output to the controller, and the controller rotates the closure motor 33 in the normal direction accordingly. As a result, the closure 32 is actuated to shift the lock means of the door lock device 31 to the fully latched state, and the door 60 is completely locked.

  When the door lock device 31 is in the fully latched state, the full latch switch outputs a detection signal to the controller, the controller reversely rotates the closure motor 33 in response, and an origin switch (not shown) provided in the closure 32 returns to the initial position. When the detection signal is given to the controller, the controller stops the closure motor 33 accordingly.

[Electric door opening]
When the closed door 60 is opened electrically, the opening operation switch is operated wirelessly or from inside the vehicle. In response to a door opening command by the door opening operation switch, the controller operates an open lever (not shown) of the door lock device 31 by operating a motor (not shown) (an apparatus different from the motor that rotates the drive gear 4). And unlock the door (full open state, similar to the conventional and well-known technique). Note that the door lock can be released by operating the open lever with a wire or the like by a manual handle by an operation from inside the vehicle (conventionally known).

  Next, the controller rotates the motor 5 that rotates the drive gear 4 in the normal direction to rotate the drive gear 4 in the door opening direction (counterclockwise in FIG. 4). When the drive gear 4 rotates in the door opening direction, the support pin 20, the hook base 18, and the hook member 15 rotate in the door opening direction around the central shaft 7 together with the drive gear 4. Then, as the drive gear 4 rotates in the door opening direction, the sleeve 13 (see FIG. 6) provided on the support pin 20 fixed to the drive gear 4 is attached to the cam portion 21 of the opener operating lever 6. The opener operating lever 6 is rotated forward (turned counterclockwise) to the operating position by abutting from the direction and moving to the central portion of the cam portion 21 (see FIG. 10). As a result, the opener 34 is actuated to push up the door 60 to automatically open the door 60 from the fully closed state to the opening operation start position of the opening assist means (gas stay 36).

  Subsequently, the opening assist means functions, and the door 60 is automatically opened to the fully opened state by the extension operation. During this time, the cam follower portion 28 of the hook member 15 continues to slidably contact the small diameter portion 40 of the cam portion 17 and the hook member 15 of the drive gear 4 continues to take the initial position. It is possible to rotate normally without collision (see reference numeral 15d in FIG. 8). The drum 3 continues normal rotation and feeds the door pulling cable 2 from its outer periphery. When the door 60 is fully opened, the drum protrusion 14 of the drum 3 stops at the position shown in FIG.

  When the controller 5 rotates the motor 5 forward to the rotation position where the opener operating lever 6 rotates normally to the operating position, the controller 5 reverses the motor 5. As a result, the drive gear 4 rotates in the reverse direction (clockwise). The controller reverses the drive gear 4 to the origin position shown in FIG. 4 and stops the motor 5. When the drive gear 4 is reversed, the opener operating lever 6 is urged toward the initial position by the urging force of the urging spring 11, so that the sleeve 13 provided on the support pin 20 of the drive gear 4 (FIG. 6) rotates counterclockwise while abutting on the cam portion 21 of the opener operating lever 6, and when the sleeve 13 is separated from the cam portion 21 of the opener operating lever 6, the opener operating lever 6 returns to the initial position, and the opener 34 Will return to its original position.

[Electric door closing, normal closing without obstacles detected]
When the fully opened door 60 is closed electrically, the closing operation switch is operated wirelessly or from inside the vehicle. The controller reverses the motor 5 in response to a closing command by the closing operation switch. When the motor 5 rotates in the reverse direction, the drive gear 4 rotates in the reverse direction (rotates in the closing direction, clockwise in FIG. 4), and when the driving gear 4 rotates in the closing direction, the spindle pin 20 and the hook are integrated with the drive gear 4. The base 18 and the hook member 15 rotate around the central axis 7 in the door closing direction.

  As the drive gear 4 rotates in the door closing direction, the cam follower portion 28 of the hook member 15 moves from the small diameter portion 40 of the cam portion 17 to the straight guide portion 42 (see reference numeral 15a in FIG. 8) and from the straight guide portion 42 to the diameter. By continuing sliding contact with the major portion 41 (see reference numeral 15b in FIG. 8), the hook member 15 of the drive gear 4 rotates counterclockwise around the spindle pin 20, and the engaging recess 27 of the hook member 15 is engaged. Is rotated to an engageable position where it can engage with the drum protrusion 14.

  Subsequently, when the drive gear 4 rotates in the door closing direction, the engagement concave portion 27 of the hook member 15 is engaged with the drum protrusion 14. At this time, the drum protrusion 14 is applied to the biasing force of the biasing spring 29 from the inside. The hook member 15 is further rotated counterclockwise around the spindle pin 20 by pressing the guide protrusion 26 outwardly against the shaft pin 20, and the engagement recess 27 of the hook member 15 is brought into contact with the drum protrusion 14. When in the fully engaged state, the cam follower portion 28 of the hook member 15 that has been in a sliding contact state is separated from the large-diameter portion 41 of the cam portion 17 (see reference numeral 15c in FIG. 8 and FIG. 11).

  Further, the drive gear 4 subsequently rotates in the door closing direction, and the engagement recess 27 of the hook member 15 rotates in the door closing direction while capturing the drum protrusion 14, so that the drum 3 is closed in the door closing direction (the clock shown in FIG. 3). And the door pulling cable 2 is wound around the outer periphery, and the door 60 starts to descend (the door 60 starts to close).

  When the drive gear 4 further rotates in the door closing direction (clockwise) from the position shown in FIG. 11, the sleeve 13 provided on the support shaft pin 20 fixed to the drive gear 4 becomes the cam portion 21 of the opener operating lever 6. Then, the opener operating lever 6 is rotated forward (rotated counterclockwise) to the operating position (see FIG. 12). Accordingly, the opener 34 operates even in the closing operation. The timing at which the opener operating lever 6 takes the operating position substantially coincides with the closing operation start position of the closing assist means (gas stay 36) that operates when the door 60 operates in the closing direction. As a result, as shown in FIG. 16, braking force is applied to the retracting operation force of the closing assist means by the force that pushes up the door 60 by operating the opener 34 (when the door opening angle is approximately 25 degrees). Is prevented from closing suddenly, and the drum 3 is rotated in the closing direction only by the rotational force of the drive gear 4. Further, the rotation speed of the drive gear 4 (shown as the reverse rotation speed of the motor 5 in FIG. 16) can be set to be slow so that the closing operation can be performed gently (see FIG. 16).

  Subsequently, when the drive gear 4 rotates in the door closing direction to rotate the drum protrusion 14 to the position shown in FIG. 13, the door 60 is closed and a half latch state is established. Further, the drum 3 rotates in the clockwise direction as the engaging recess 27 of the hook member 15 captures the drum protrusion 14 and rotates in the door closing direction as the drive gear 4 rotates in the door closing direction. Wind the cable 2 around the periphery.

  When the door 60 is closed and is in a half latch state, the half latch switch of the door lock device 31 outputs a detection signal to the controller, and the controller rotates the motor 5 forward in response, and the drive gear 4 is in the door opening direction (see FIG. 13). Rotate clockwise. At the same time, the controller rotates the closure motor 33 forward. As a result, the closure 32 operates to shift the locking means of the door lock device 31 to the full latch state. The drum protrusion 14 abuts against the stopper portion 25 (see FIG. 5) by the biasing force of the biasing spring 8 (see FIG. 3), and is restricted to the position in FIG.

  When the drive gear 4 rotates in the door opening direction, the support pin 20, the hook base 18, and the hook member 15 rotate in the door opening direction around the central shaft 7 together with the drive gear 4. Then, when the hook member 15 rotates in the door opening direction, the engagement concave portion 27 of the hook member 15 is separated from the drum protrusion 14 in the door closing direction, and the guide protrusion 26 of the hook member 15 is detached from the drum protrusion 14. Then, the urging force of the urging spring 29 causes the hook member 15 to rotate clockwise around the spindle pin 20, and the cam follower portion 28 of the hook member 15 is in contact with the small diameter portion 40 of the cam portion 17. (See FIG. 14, hook removal position). The controller reverses the motor 5 when the motor 5 is rotated forward from the drum protrusion 14 to the rotational position of the drive gear 4 where the guide protrusion 26 of the hook member 15 is disengaged (hook removal position). As a result, the drive gear 4 rotates in the reverse direction (clockwise). The controller reverses the drive gear 4 to the origin position shown in FIG. 4 and stops the motor 5.

  Thereafter, the door lock device 31 is fully latched, and the door 60 is completely locked. The full latch switch detects this and outputs a detection signal to the controller. In response, the controller rotates the closure motor 33 in the reverse direction (counterclockwise), and an origin switch (not shown) provided in the closure 32 sets the initial position. When the detection signal is given to the controller, the controller stops the closure motor 33 accordingly.

[Electric door opening operation when an obstacle is detected while closing the door]
In the present invention, when the pressure sensor detects a load while the door 60 is being closed, the drive gear 4 is rotated from the door closing direction to the door opening direction according to the detection signal of the pressure sensor. Inverted, the opener operating lever 6 is rotated to the operating position by the contact of the opener operating lever 6 with the cam portion 21 by the rotational movement of the gear projection (sleeve 13), and the opener 34 is operated to open the door. .

  In a state where the door 60 is automatically closed by electric power, that is, between the door closing start position shown in FIG. 11 and immediately before the half latch state (door retracting start position) shown in FIG. When an obstacle comes into contact, a pressure sensor provided on the frame of the door 60 detects a load caused by the contact with the obstacle, and a detection signal from the pressure sensor is input to the controller. The controller rotates the motor 5 normally according to the detection signal of the pressure sensor.

  For example, FIG. 15 shows that the pressure sensor detects an obstacle between the opener operating position in the automatic door shown in FIG. 12 and immediately before the half latch state (door retracting start position) shown in FIG. It shows a case where the controller rotates the motor 5 in accordance with the detection signal of the sensor (referred to as “when the drive gear is reversed by detection of the pressure sensor”). Due to normal rotation of the motor 5, the drive gear 4 rotates in the door opening direction (counterclockwise) in FIG.

  The rotational position of the drive gear 4 shown in FIG. 15 is such that the drive gear 4 is rotated by the controller based on the detection signal of the pressure sensor, as described in [Electric door closing, normal closing operation in which no obstacle is detected]. Until just before turning in the forward direction (door opening direction), the opener 34 is actuated to brake the retraction operation force of the closing assist means by the force that pushes up the door 60 to avoid the door 60 from closing suddenly. At the same time, the drum 3 is rotated in the closing direction only by the rotational force of the drive gear 4. Further, the rotational speed of the drive gear 4 is set to be slow, and the closing operation is performed gently (see FIG. 16).

  In “when the drive gear is reversed by detection of the pressure sensor”, the drum protrusion 14 is biased in the closing direction by the biasing spring 8 (see FIG. 3), and the door pulling cable 2 is moved in the opening direction by the door 60. It stays in the position shown in FIG. 15 due to the tension.

  When the drive gear 4 rotates in the door opening direction (counterclockwise), the support pin 20, the hook base 18 and the hook member 15 rotate together with the drive gear 4 in the door opening direction around the central shaft 7. Then, when the hook member 15 rotates in the door opening direction, the engagement concave portion 27 of the hook member 15 is separated from the drum protrusion 14 in the door closing direction.

  When the guide protrusion 26 of the hook member 15 is detached from the drum protrusion 14, the hook member 15 is rotated clockwise around the spindle pin 20 by the biasing force of the biasing spring 29, and the cam follower portion of the hook member 15 is 28 is in contact with the small diameter portion 40 of the cam portion 17 (initial position). Accordingly, the hook member 15 is retracted from the track of the drum protrusion 14 (see reference numeral 15d in FIG. 8).

  As the drive gear 4 continues to rotate in the door opening direction, the sleeve 13 (see FIG. 6) provided on the spindle pin 20 fixed to the drive gear 4 contacts the cam portion 21 of the opener operating lever 6. Then, the opener operating lever 6 is rotated forward (turned counterclockwise) to the operating position (see FIG. 10). As a result, the opener 34 is actuated to push up the door 60 to automatically open the door 60 from the fully closed state to the opening operation start position of the opening assist means (gas stay 36). Subsequently, the opening assist means functions, and the door 60 is automatically opened to the fully opened state by the extension operation.

  As described above, according to the door opening and closing device of the back door of the present invention, the retracting operation of the closing assist means (gas stay 36) is almost due to the push-up force of the opener 34 when the opener is activated at the time of automatic door closing shown in FIG. It has been offset. Therefore, when the opening of the motor 5 is immediately reversed from the closing direction to the opening direction and the opener operating lever 6 is rotated to the operating position to operate the opener, the operation of the opener 34 immediately opens the door 60. You can turn to action. Therefore, it is possible to avoid a collision with an obstacle even in the operating region of the closing assist means.

  The drum protrusion 14 of the drum 3 can rotate normally without hitting the hook member 15. The drum 3 rotates forward and feeds out the door pulling cable 2 from its outer periphery. When the door 60 is fully opened, the drum protrusion 14 of the drum 3 stops at the position shown in FIG.

  When the controller 5 rotates the motor 5 forward to the rotation position where the opener operating lever 6 rotates normally to the operating position, the controller 5 reverses the motor 5. As a result, the drive gear 4 rotates in the reverse direction (clockwise). The controller reverses the drive gear 4 to the origin position shown in FIG. 4 and stops the motor 5. When the drive gear 4 is reversed, the opener operating lever 6 is urged toward the initial position by the urging force of the urging spring 11, so that the sleeve 13 provided on the support pin 20 of the drive gear 4 (FIG. 6) rotates counterclockwise while abutting on the cam portion 21 of the opener operating lever 6, and when the sleeve 13 is separated from the cam portion 21 of the opener operating lever 6, the opener operating lever 6 returns to the initial position, and the opener 34 Will return to its original position.

  In the above-described embodiment, a pulse motor capable of forward and reverse rotation is employed as the motor 5, and the origin position of the drive gear 4 and the operating position that causes the opener 10 to be driven by the number of pulses that the controller outputs to the motor 5 (see FIG. 10) and the rotational position (hook removal position) of the drive gear 4 from which the hook member 15 is detached from the drum protrusion 14, a general DC motor is used as the motor 5. An origin detecting switch for detecting the origin position, an opener operating lever operating position detecting switch for detecting an operating position where the opener operating lever 6 causes the opener 10, and a rotational position of the drive gear 4 from which the hook member 15 is detached from the drum protrusion 14 are detected. A hook removal position detection switch is provided, and the controller operates the motor according to the position detection signal from each position detection switch. The forward drive gear 4 by controlling, may be controlled reversing and rotation stop.

It is a front view which shows the rear part of the motor vehicle provided with the flip-up type back door which concerns on embodiment of this invention. It is the side view seen from one side of the rear part of a car. It is a front view of the door opening and closing apparatus concerning the embodiment of the present invention. It is a front view which shows the principal part of the door opening / closing apparatus in an origin position. It is a front view which expands and shows the principal part of a door opening / closing apparatus. It is sectional drawing fractured | ruptured and shown by the AA line in FIG. It is sectional drawing fractured | ruptured and shown by the BB line in FIG. It is a figure which shows the operation state of the hook member which rotates with the rotation of a drive gear, and the cam part of the hook guide member which rotates a hook member centering on a spindle pin. It is a principal part front view of the door opening / closing apparatus in a door full open state. It is a principal part front view of the door opening / closing apparatus at the time of the opener action | operation by automatic opening. It is a principal part front view of the door opening and closing apparatus at the time of the door closing start by automatic closing. It is a principal part front view of the door opening / closing apparatus at the time of the opener action | operation by automatic closing. It is a principal part front view of the door opening / closing apparatus at the time of the door pull-in by an automatic closing (half latch state). It is a principal part front view of the door opening / closing apparatus at the time of hook removal by automatic closing. It is a principal part front view of the door opening / closing apparatus at the time of drive gear reversal when an obstruction is detected by a pressure sensor. It is a time chart which shows the operation state of the door end load in a automatic door closing operation | movement, a door opening angle, a motor, a drive gear, an opener operating lever, an opener, a hook member, and a drum.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Door opening and closing device 2 Door pulling cable 3 Drum 4 Drive gear 5 Motor 6 Opener operation lever 7 Center shaft 8 Biasing spring 9 Opener operation cable 10 Support shaft 11 Biasing spring 12 Base 13 Sleeve (gear projection)
Reference Signs List 14 Drum Protrusion 15 Hook Member 16 Hook Guide Member 17 Cam Part 18 Hook Base 19 Sleeve 20 Supporting Pin 21 Cam Part 22 Bridging Part 23 Leg Part 24 Inclination Part 25 Stopper Part 26 Guide Projection Part 27 Engaging Concave Part 28 Cam Follower Part 29 Force spring 30 Hinge 31 Door lock device 32 Closure 33 Closure motor 34 Opener 35 Pulley 36 Gas stay (open assist means and close assist means)
40 small diameter portion 41 large diameter portion 42 linear guide portion 43 linear guide portion 50 output shaft 51 pinion 60 door 70 vehicle body

Claims (2)

An opener that unlocks the door in the closed position after being unlocked by the locking means to the door opening operation start position and automatically opens the door to the door opening operation start position, and automatically opens the door that has been opened to the door opening operation start position to the fully opened state. An opening assist means, and a closing assist means for automatically closing the door closed to the door closing operation start position with respect to the fully opened state to a half latch state, provided for a flip-up type door,
A door pulling cable having a length corresponding to or larger than the door opening / closing angle, a drum that opens and closes the door pulling cable and opens and closes the door, and a rotating surface of the drum are arranged opposite to each other. , A drive gear that can be driven to rotate in both the door opening direction and the door closing direction by a motor that can rotate forward and reverse, a central shaft that rotatably supports the drum and the drive gear, and rotation of the drive gear An opener actuating lever for actuating the opener, drum protrusions projecting from the drum on opposite rotating surfaces of the drum and the drive gear, and the drum as the drive gear rotates in the door closing direction. An engaging member that engages with the protrusion,
The door is configured to close the door by the rotation of the drive gear being transmitted to the drum by winding the door pulling cable by the engagement member engaging the drum protrusion. In switchgear,
A gear protrusion that contacts the opener operating lever is provided on the drive gear,
The opener actuating lever is disposed laterally to the side of the central axis and above the drive gear, and the base end is pivotally supported via a support shaft provided separately from the central axis, and the distal end The opener operating cable is connected to the side edge facing the central axis of the opener operating lever, in any case when the drive gear rotates in the opening direction and in the closing direction. A cam portion is provided in contact with the gear projection to rotate the opener operating lever to the operating position;
When the drive gear rotates in the door closing direction, the engagement member is moved from an initial position where engagement with the drum protrusion is impossible to an engageable position where engagement with the drum protrusion is possible. Members,
A pressure-sensitive detection means that is provided on the door frame and detects a load caused by contact with an obstacle;
With the rotation of the drive gear in the door opening direction, when the engagement between the engagement member and the drum protrusion is disengaged, a retraction moving member that retracts the engagement member from the track of the drum protrusion;
With
When the pressure sensor detects a load during the door closing operation, the rotation of the drive gear is reversed from the door closing direction to the door opening direction according to a detection signal of the pressure sensor, and the gear protrusion The door opening and closing device is characterized in that the opener operating lever is rotated to the operating position by contact with the cam portion by rotational movement of the opener, and the door is opened by the operation of the opener.   While the drive gear is rotating in the door closing direction, the opener operating lever is rotated to the operating position by the contact of the gear projection with the cam portion by the rotational movement in the door closing direction, and the opener is pushed up. The door opening and closing device according to claim 1, wherein braking is applied to the retracting operation force of the closing assist means by force.

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