JP2005330724A - Door opening/closing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a door opening/closing device which dispenses with a special switching device for switching between a manual operation mode and a power operation mode, is simple in structure, light in weight, and low in cost. <P>SOLUTION: According to the structure of the door opening/closing device, a drum 1 for opening/closing a door by unwinding or winding a door towing cable, and a driving gear 2 connected to an output shaft of a motor 5 are arranged such that their rotating surfaces are opposed to each other, and when a drum protrusion 8 and a gear protrusion 11 formed on the respective opposed surfaces, abut on each other, rotation force of the driving gear 2 is transferred to the drum 1, to thereby rotate the drum forward/backward. When the driving gear 2 is in stoppage, the drum protrusion 8 and the gear protrusion 11 do not abut on each other, and therefore by using a region in which the drum 1 is freely rotatable, the door is made manually openable/closable. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a door opening / closing device that electrically and manually opens and closes a flip-up door such as an automobile back door.

In general, to open and close the flip-up back door of an automobile, unlock the door by operating the key from the outside of the vehicle or opening the door from the inside of the vehicle, push it up from the outside of the vehicle, and open the back door. It was closed by pushing down against the pressure of the supporting means supported by
However, such backdoors must be opened and closed from outside the vehicle even in bad weather, and small people are inconvenient because they cannot reach the fully opened backdoor. It was.

Therefore, conventionally, when the door lock is released, the door is automatically opened by the biasing force of the telescopic stay, the winding drum is rotated by the winding motor, and the door is electrically closed by winding the cable. A door opening / closing mechanism of an automobile that can also close the door is proposed (see Patent Document 1).
However, the conventional door opening / closing mechanism has an electromagnetic clutch mechanism for switching between the winding motor and the winding drum, and when the winding motor is in operation, the winding motor and the winding drum are operated. The drum is connected, and normally the take-up motor and take-up drum are separated so that the take-up drum can rotate freely during manual opening and closing, resulting in a complicated and heavy structure and high cost. In addition, most of the devices had to be mounted on the vehicle body side.

JP 2002-115449 A

  The problem to be solved by the present invention is to provide a door opening / closing device that is simple in structure, lightweight, and inexpensive because a special switching device for switching between manual operation and electric operation is unnecessary.

  The door opening and closing device of the present invention includes a door pulling cable having a length equal to or longer than the opening and closing angle of the door, a drum for opening and closing the door by rewinding and winding the door pulling cable, and a motor A drive gear connected to the output shaft, the drum and the drive gear are arranged so that their rotational surfaces face each other, and on the opposed rotational surfaces, a drum protrusion is provided on the drum, and the drive gear is A gear protrusion is provided, and the gear protrusion comes into contact with the drum protrusion from opposite directions to transmit the rotational force of the drive gear to the drum to rotate forward and reverse, and the drive gear stops. The length of the door pulling cable according to the door opening / closing angle is wound using an area in which the drum can freely rotate without contacting the drum protrusion and the gear protrusion. By returning take-winding, there as possible the door opened and closed manually.

An initial door opening device that is driven by the drive gear to open the closed door to a predetermined angle, and an opening assist means that fully opens the door opened by the initial door opening device are provided, and the door is opened by the opening assist means. While the door is automatically opened to the fully open state, the motor may be reversed to return the drive gear to the initial position.
Furthermore, after the door in the opened state is closed to a predetermined angle, a closing assist means that fully closes, and a closure that is driven by the drive gear to shift the door lock device from the half latch state to the full latch state, When closing the door by rotating the drum by the drive gear, when the door closes to an angle at which the closing assist means functions, the motor and the drive gear are stopped, and when the door lock device is in a half latch state, The drive gear may be restarted to operate the closure, and after the closure is operated, the drive gear may be returned to the initial position.

The initial door opening device and the closure may be coupled to an operation lever driven by the drive gear.
In this case, the gear projections of the drive gear contact the side edges of the operation lever from opposite directions, thereby transmitting the rotational force of the drive gear to the operation lever to rotate forward and reverse. When the lever rotates forward and backward, the initial door opening device or closure is operated, and after the initial door opening device or closure is operated, the operation lever can be returned to the initial position.

According to the first aspect of the present invention, since the door can be opened and closed either electrically or manually without switching by an electromagnetic clutch or the like, the number of components is small, and the weight is low and the cost is low.
According to the invention which concerns on Claim 2, it becomes possible to perform the initial opening of a door automatically with the same motor.
According to the invention which concerns on Claim 3, in addition to the electric opening and closing of a door, locking can also be performed by one motor.
According to the inventions according to claims 4 and 5, since the initial door opening device and the closure are operated via one operation lever driven by the drive gear, the structure of the entire device is further simplified and reduced in weight. For this reason, most members of the apparatus can be mounted on the door, and can be easily mounted on an existing vehicle.

Hereinafter, an embodiment which is a door opening and closing device for opening and closing a flip-up back door of an automobile will be described in detail based on the drawings.
As shown in FIGS. 1 and 2, the door opening / closing device shares a central axis 30 and is rotatably arranged so that the rotation surfaces face each other, a drive gear 2 and an operation lever 3, As shown in FIGS. 3 to 5, the cable 4 that pulls the door A in the closing direction by winding it with the drum 1, the motor 5 that rotates the drive gear 2 in both forward and reverse directions, and the door A in the fully closed state. Is provided with an opener 6 that is an initial door opening device that opens the door to a predetermined angle, and a closure 7 that shifts the half-latch door lock device 22 to a full latch state.

The door A is attached to the upper end of the opening of the vehicle body B through a hinge 18 so as to be freely opened and closed. Further, between the door A and the vehicle body B, opening assist means and closing assist means such as a gas stay and a torsion spring are interposed.
When the closed door A opens to a predetermined angle and reaches the open neutral position, the opening assist means functions to automatically open the fully open state, and the open door A closes to the predetermined angle and closes to the closed neutral position. When the value reaches, the closing assist means functions to automatically close the door to the fully closed state.

The drum 1 rotates forward (counterclockwise in FIGS. 1 and 3) and rewinds the cable 4, and rotates reverse (clockwise in FIGS. 1 and 3) to wind the cable 4.
As shown in FIG. 5, the tip of the cable 4 is coupled to the vehicle body B via a pulley 19 attached to the door A, and the door A is closed when the drum 1 winds the cable 4. .
Further, the drum 1 is provided with a spring for urging the drum 1 in the reverse rotation direction so as to wind the cable 4 so that the cable 4 does not loosen when the door A is manually closed.
Further, a drum protrusion 8 projects from the surface of the drum 1 facing the drive gear 2.

A worm gear 9 is attached to the output shaft of the motor 5, and the worm gear 9 meshes with the reduction gear group 10 and the reduction gear group 10 meshes with the drive gear 2.
Further, on the surface of the reduction gear 2 facing the drum 1, there is provided a gear projection 11 that comes into contact with and separates from the side surface of the drum projection 8 as it rotates, and projects on the track of the operation lever 3.
When the drive gear 2 rotates in the reverse direction with the gear projection 11 in contact with the side surface of the drum projection 8, the drum 1 is pushed and reverses, and the cable 4 is wound up.
Further, although not shown, an initial position switch is installed to stop the motor 5 by detecting this when the rotating drive gear 2 reaches the initial position.

The operation lever 3 is formed in a belt shape or a fan shape, and a first long hole 12 is formed along the circumferential direction, and a second long hole 13 is formed outside the first lever 12 along the circumferential direction.
A first slider 14 is slidably engaged with the first long hole 12, and one end of an opener operating cable 15 is coupled to the first slider 14.
A second slider 16 is slidably engaged with the second elongated hole 13, and one end of a closure operation cable 17 is coupled to the second slider 16.

When the operation lever 3 is in the initial position, the first slider 14 is located at the rear end of the first long hole 12 in the forward direction, and the second slider 16 is in the reverse direction of the second long hole 13. Located at the rear end.
The other end of the closure operating cable 17 is connected to the closure 7. When the operation lever 3 is reversed from the initial position and the closure operating cable 17 is pulled, the closure 7 is activated and the door lock device 22 shifts to a fully latched state. A is locked.
The door lock device 22 can be unlocked by operating from the inside of the vehicle or by operating the manual handle 21 installed on the door A.

The other end of the opener operating cable 15 is connected to the opener 6. As shown in FIG. 6, a rotating portion 20 is fixed to the base end portion of the opener 6, and the center of the rotating portion 20 is attached to the door A so as to be rotatable.
Further, the other end portion of the opener operation cable 15 is engaged with the outer periphery of the rotating portion 20, and the tip thereof is fixed to the rotating portion 20.
When the operation lever 3 rotates forward from the initial position and pulls the opener operation cable 15, the rotating unit 20 rotates clockwise in FIG. 6 to raise the opener 6, and the front end of the opener 2 pushes the vehicle body B to open the door A Opens to the open neutral position.
Further, when the operation lever 3 returns to the initial position, the rotating portion 20 rotates counterclockwise, and the opener 6 falls down.

Note that the amount of rotation of the operation lever 3 in both the forward and reverse directions is such that the first slider 14 and the second slider 16 reach the other ends of the first long hole 12 and the second long hole 13, respectively. After the operation is stopped and the operation lever 3 stops at the restriction position, the operation lever 3 returns to the initial position by the spring biasing force.
Accordingly, when the operation lever 3 is rotated forward, the closure operation cable 17 is not affected, and when the operation lever 3 is reversed, the opener operation cable 15 is not acted.

Further, when the drive gear 2 is rotated forward and the closed door A is opened to the open neutral position, an open neutral detection switch that detects this and reverses the motor 5 to return the drive gear 2 to the initial position is provided. Provided.
Further, when the drive gear 2 reverses and the open door A closes to the closed neutral position, a closed neutral detection switch that detects this and stops the motor 5, and the door A closes to a half latch state. The half latch switch that restarts the motor 5 and the drive gear 2 and reverses the rotation, and when the closure 7 is activated to be in the fully latched state, the motor 5 and the drive gear 2 are detected. A full latch switch for normal rotation is installed.

When the drive gear 2 and the operation lever 3 are in the initial positions, the gear protrusion 11 is in contact with the rear end edge of the operation lever 3 in the forward rotation direction.
In this state, when the cable 4 is wound around the drum 1 (when the door A is closed), the drum protrusion 8 is rotated in the forward direction of the gear protrusion 11 as shown by the broken line in FIG. When the cable 4 is unwound from the drum 1 (when the door A is open), the drum projection 8 is in contact with the side surface of the gear projection 11 facing in the reverse direction. .
Further, when the operation lever 3 returns from the reverse rotation restricting position to the initial position, the closure 7 also returns to the original position, and when the operation lever 3 returns from the normal rotation restricting position to the initial position, the opener 6 falls down.

When the closed door A is manually opened, the drum protrusion 8 that is in contact with the surface of the gear protrusion 11 facing in the forward rotation direction can be rotated forward without being restricted by the gear protrusion 11. As the drum 1 moves upward, the drum 1 freely rotates forward to rewind the cable 4, and when the door A is completely opened, the drum protrusion 8 contacts the side surface of the gear protrusion 11 facing in the reverse direction.
On the other hand, when the closed door A is opened electrically, the motor 5 is rotated in the forward direction by radio or an opening operation from the inside of the vehicle. Then, the drive gear 2 driven by the motor 5 rotates in the forward direction, and the gear protrusion 11 pushes the operation lever 3 and the drum protrusion 8 that are in contact therewith. As a result, the operation lever 3 and the drum 1 rotate in the forward direction.

As a result, the opener operation cable 15 is pulled, the opener 6 is raised, and the door A is opened to the neutral position. Thereafter, the door A is automatically opened by the opening assist means, and the drum 1 continues to rotate forward and the cable 4 is rewound.
Further, after the forward rotation of the operation lever 3 is restricted, the operation lever 3 is returned to the initial position by the urging force. At the same time, the open neutral switch is actuated to reversely rotate the motor 5 and the drive gear 2 and the drive gear 2 is returned to the initial position. To do.
When the drive gear 2 returns to the initial position, the initial position switch is activated and the motor 5 is stopped.

When the door A in the opened state is manually closed, the drum protrusion 8 that is in contact with the surface of the gear protrusion 11 facing the reverse direction is not restricted from being reversely rotated by the gear protrusion 11, so that the cable 4 is loosened. Accordingly, the drum 1 is reversed by the force of the spring, and the cable 4 is wound around the drum 1.
When the door A is closed electrically, the motor is reversely rotated by a closing operation from the inside of the vehicle or the vehicle, and the drive gear 2 driven by the motor 5 is reversely rotated. Then, since the gear protrusion 11 pushes the drum protrusion 8, the drum 1 is reversed to wind the cable 4.
When the door A reaches the closed neutral position, the closed neutral switch is actuated to temporarily stop the motor 5 and the drive gear 2, and the door A is automatically closed by the closing assist means.

When the door A is closed and the half-latch state is activated, the half-latch switch is operated, the motor 5 and the drive gear 2 start to reverse again, and the gear projection 11 of the drive gear 2 presses the operation lever 3 to reverse it.
Then, the closure operating cable 17 is pulled to operate the closure 7, the door lock device 22 is shifted to the full latch state, and the door A is locked.
Thereafter, the operation lever 3 is energized to return to the initial position, and the closure 7 also returns to the original position.
Further, when the door lock device 22 is in the fully latched state, the full latch switch is operated, the motor 5 and the drive gear 2 are rotated forward, and the drive gear 2 is returned to the initial position.

In addition, the structure of the door opening / closing apparatus of this invention is not limited to the said Example.
For example, in the illustrated example, the operation lever 3, the drive gear 2, and the drum 1 are overlapped in this order, but the operation lever 3 may be disposed between the opposing surfaces of the drum 1 and the drive gear 2.
Further, the shape of the opener 6, the structure for raising and lowering the opener 6, and the like can be changed as appropriate.

The principal part top view of the door opening and closing apparatus which shows the Example of this invention. The principal part sectional drawing of the door opening and closing apparatus which shows the Example of this invention. The rear view of the motor vehicle based on the Example of this invention. The side view seen from one side of the automobile rear part concerning the example of the present invention. The side view seen from the other side of the automobile rear part concerning the example of the present invention. The side view of the opener and opener operation cable which concern on the Example of this invention.

Explanation of symbols

A Door B Car body 1 Drum 2 Drive gear 3 Operation lever 4 Cable 5 Motor 6 Opener 7 Closure 8 Drum protrusion 9 Worm gear 10 Reduction gear group 11 Gear protrusion 12 1st long hole 13 2nd long hole 14 1st slider 15 Opener operation cable 16 Second slider 17 Closure operation cable 18 Hinge 19 Pulley 20 Rotating part 21 Manual handle 22 Door lock device 30 Center shaft

Claims (5)

  A door pulling cable having a length equal to or longer than the opening / closing angle of the door, a drum for opening / closing the door by rewinding / winding the door pulling cable, and a drive gear connected to the output shaft of the motor The drum and the drive gear are arranged so that their rotational surfaces face each other, and the drum projections are provided on the drum and the drive gears are provided with gear projections on the opposed rotational surfaces. When the gear projections abut against each other from opposite directions, the rotational force of the drive gear is transmitted to the drum to rotate forward and reverse, and when the drive gear is stopped, By taking up and rewinding the length of the door pulling cable according to the door opening / closing angle using an area where the drum can freely rotate without coming into contact with the gear projection. , Door openers, characterized in that allowed the door manually.   An initial door opening device that is driven by the drive gear to open the closed door to a predetermined angle, and an opening assist means that fully opens the door opened by the initial door opening device are provided, and the door is opened by the opening assist means. The door opening and closing device according to claim 1, wherein the motor is reversely rotated to return the drive gear to an initial position while the door is automatically opened to the fully open state.   The driving gear is provided with a closing assist means for fully closing after the door in the opened state is closed to a predetermined angle, and a closure driven by the driving gear to shift the door lock device from the half latched state to the full latched state. When the door is closed by rotating the drum according to the above, when the door closes to an angle at which the closing assist means functions, the motor and the driving gear are stopped, and when the door lock device is in a half latch state, The door opening and closing device according to claim 2, wherein the door is restarted to operate the closure, and the drive gear is returned to the initial position after the closure is operated.   The door opening and closing device according to claim 3, wherein the initial door opening device and the closure are connected to an operation lever driven by the drive gear. The gear protrusions of the drive gear contact the side edges of the operation lever from opposite directions to transmit the rotational force of the drive gear to the operation lever to rotate forward and reverse, and the operation lever 5. The door opening and closing device according to claim 4, wherein the initial opening device or the closure is operated by reverse rotation, and the operation lever returns to the initial position after the initial opening device or the closure is operated.

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