JP3640061B2 - Opening and closing device for vehicle opening and closing body - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an opening / closing device for a vehicle opening / closing body in which the opening / closing body of a vehicle is automatically opened / closed by a driving device.
[0002]
[Prior art]
Conventionally, in an apparatus as described above, in order to facilitate the opening / closing operation of the door of the vehicle, the driving apparatus includes a motor and an automatic opening / closing operation and a manual opening / closing operation manually. And a clutch.
[0003]
This driving device enables the motor and the output part connected to the door to be connected by a clutch during automatic opening and closing so that the rotation of the motor can be transmitted to the door. In order to prevent the resistance of the speed reduction mechanism from occurring, the linkage between the motor and the output unit is cut off by a clutch.
[0004]
The rear door of the luggage compartment is connected to a gas stay for holding the luggage compartment in a fully opened state, so that the luggage can be easily taken in and out with the rear door opened.
[0005]
[Problems to be solved by the invention]
However, in the conventional apparatus as described above, when the door is moved to the fully open position by automatic opening / closing, the rotation of the motor is stopped and the clutch is controlled to be disconnected. If the holding force is weakened, the door may be suddenly closed by its own weight without being held in the fully open position, and a large impact may act on the door, the vehicle body, or the like, causing damage to the door.
[0006]
In view of the above-described problems of the conventional technology, the present invention makes it possible to detect a failure or the like of a fully-open holding mechanism and prevent a sudden closing of the opening / closing body from a fully-opened state. It is an object of the present invention to provide an opening / closing device for a vehicle opening / closing body capable of preventing breakage.
[0007]
[Means for Solving the Problems]
According to the present invention, the above problem is solved as follows.
(1) A fully open holding mechanism that can hold the open / close body in a fully open position between the vehicle body and an open / close body that can be opened and closed on the vehicle body; And a drive device that transmits to the output unit via the clutch and moves the output unit, and operates the operation switch provided at an appropriate position of the vehicle to bring the clutch into a connected state and to operate the motor. In an opening / closing device for a vehicle opening / closing body that is rotated and opened / closed by the driving device, the opening / closing body movement detection that can detect movement of the opening / closing body in a fully open position and in a closing direction from the fully open position. Means, a timer for measuring a preset time from the time when the opening / closing body movement detecting means detects the fully opened position of the opening / closing body, and the opening / closing body movement detecting means during the time counting by the timer By detecting movement in the closing direction from the open position, the opening / closing body abnormal lowering detection means for detecting that the opening / closing body has been lowered by its own weight, and the opening / closing body abnormal lowering detection means are operated, whereby the clutch is And a control circuit to be connected.
[0008]
(2) A fully open holding mechanism that can hold the open / close body in a fully open position between the vehicle body and an open / close body that can be opened and closed on the vehicle body, and a reduction mechanism that reduces the rotational force of the motor that can rotate forward and backward. And a drive device that transmits to the output unit via the clutch and moves the output unit, and operates the operation switch provided at an appropriate position of the vehicle to bring the clutch into a connected state and to operate the motor. In an opening / closing device for a vehicle opening / closing body that is rotated and opened / closed by the driving device, the opening / closing body movement detection that can detect movement of the opening / closing body in a fully open position and in a closing direction from the fully open position. Means, a timer for measuring a preset time from the time when the opening / closing body movement detecting means detects the fully opened position of the opening / closing body, and the opening / closing body movement detecting means during the time counting by the timer An open / close body abnormal lowering detecting means for detecting that the open / close body has been lowered by its own weight by detecting a movement in the closing direction from the position, and the open / close body abnormal lowering detecting means are operated to connect the clutch. And a control circuit configured to reverse the motor.
[0009]
(3) In the above paragraph (1) or (2), the control circuit operates the operation switch until it is reset after the opening / closing body is moved to the fully closed position when the opening / closing body abnormality lowering detection means is activated. It includes storage means for invalidation.
[0010]
(4) In any one of the above items (1) to (3), the opening / closing body movement detection means is a rotation sensor that is provided on the rotation shaft of the drive device and measures the rotation amount and rotation direction of the rotation shaft. .
[0011]
(5) In any one of the above items (1) to (3), the opening / closing body movement detecting means is provided on the opening / closing body or the vehicle body, and operates when the opening / closing body reaches the fully open position, and leaves the fully open position. Therefore, the switch becomes inoperable.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to FIGS.
In FIG. 3, (1) is pivotally attached to the rear end of a roof (2) of a vehicle such as a wagon car so that it can be opened and closed in a vertical direction with a hinge shaft (3) facing left and right. The rear door (4), which forms an opening / closing body that opens and closes the door, is provided in an extendable manner between the door (1) and the vehicle body, and applies a biasing force in the door opening direction to the door (1). A fully open holding mechanism that can hold (1) in the fully open position, that is, a gas stay. (5) is a driving device fixed to the inside of the roof (2) and connected to the door (1) via a link (16) which will be described later. The door (1) is operated by an operation switch (17) as will be described later. ) Is automatically opened and closed.
[0013]
At the center of the lower end portion of the door (1), a door lock (6) is attached for engaging the striker (not shown) fixed to the vehicle body side to restrain the door (1) in a fully closed state. .
[0014]
As shown in FIGS. 4 and 5, the driving device (5) is a large gear meshing with a motor (7) capable of rotating in the forward and reverse directions and a pinion (7b) fixed to the output shaft (7a) of the motor (7). A reduction gear mechanism (8) composed of a diameter gear (8a) and an output-side pinion (8b) and a large diameter gear (8c), and an electromagnetic type mounted between the shaft (8d) of the large diameter gear (8a) A clutch (9) and an output mechanism (10) connected to the door (1) are provided.
[0015]
The output mechanism (10) is integrally connected to the large-diameter gear (8c), and is pivotally attached to the left and right drive pulleys (11) that form a forward and reverse rotatable output portion and the front end portion of the substrate (12). And a driven pulley (13) facing in the left-right direction, and a belt (14) wound around the drive pulley (11) and the driven pulley (13).
[0016]
The belt (14) is endless by connecting the terminals located on the lower travel path with the connecting bracket (15), and the connecting bracket (15) is composed of the driving pulley (11) and the driven pulley (13). The front end of the link (16) facing in the front-rear direction is connected to the mounting piece (15a) that can move linearly with the belt (14) between the belt and the lower surface by a shaft pin (16a). ing. The rear end of the link (16) is pivotally attached to a mounting bracket (1a) fixed to the upper front surface of the door (1).
[0017]
The clutch (9) is normally disconnected from the motor (7) and the drive pulley (11). When the operation switch (17) provided near the door (1) or the driver's seat is operated, the motor (7 ) And the drive pulley (11) are connected, and the rotation of the motor (7) is transmitted to the door (1) via the output mechanism (10), so that the door (1) can be automatically opened and closed.
[0018]
When the clutch (9) is in the connected state and the motor (7) is in the stopped state, the door (1) is slowed by the resistance of the speed reduction mechanism (8) and the counter electromotive force of the motor (7). To move in the closing direction. Alternatively, the door (1) can be held in the fully open position by increasing the speed reduction ratio of the speed reduction mechanism (8).
[0019]
When the door (1) is in the closed position shown by the solid line in FIG. 3, when the operation switch (17) is opened, the engagement between the door lock (6) and the striker is released by the actuator (not shown), and the clutch ( 9) is in the connected state, and the motor (7) rotates forward, and the drive pulley (11) rotates counterclockwise in FIG. 5 via the speed reduction mechanism (8) and the clutch (9). The door (1) is pushed rearward through the link (16), and is rotated upward about the hinge shaft (3) to the fully open position indicated by an imaginary line in FIG.
[0020]
When the operation switch (17) is closed when the door (1) is held in the fully open position by the gas stay (4), the clutch (9) is connected and the motor (7) is rotated in reverse. The drive pulley (11) is reversed, and the door (1) is moved downward via the link (16) and moved to the closed position.
[0021]
Around the rotation axis of the drive pulley (11), there is provided a rotation sensor (18) such as a rotary encoder that constitutes an opening / closing body movement detecting means for measuring the rotation angle. By this rotation sensor (18), the door The movement amount and movement direction of (1) are measured. As the rotation sensor (18), a rotary encoder capable of generating two two-phase pulse signals whose phases are different by 90 degrees is preferable in order to detect the amount and direction of movement of the door (1).
[0022]
FIG. 1 shows a control circuit of the above-described embodiment. (19) is a drive circuit comprising a relay or the like for driving the clutch (9) and the motor (7) by opening and closing operations of the operation switch (17). , (20) is a counting circuit for counting the number of pulses output from the rotation sensor (18). The number of output pulses from the rotation sensor (18) is set to the fully closed position of the door (1) as an initial value and then fully opened. It counts continuously to the position, and the counted value is measured as the opening / closing position of the door (1).
[0023]
Based on the number of output pulses from the rotation sensor (18), by detecting that the counting circuit (20) has reached the fully open position and the fully closed position of the door (1), the drive circuit (19) is turned off, The power supply to the motor (7) and the clutch (9) is stopped.
[0024]
(21) is a timer that measures a preset time of a minute time set in advance from the time when the counting circuit (20) detects the fully open position of the door (1) based on the output of the rotation sensor (18). The set time is set to a time shorter than this time in consideration of the time from when the door (1) is fully opened until the next door closing operation, so the normal operation switch (17) There is no false detection of closing movement due to the closing operation.
[0025]
(22) indicates that the door (1) moves a predetermined amount in the closing direction from the fully open position within the set time of the timer (21), and the rotation sensor (18) outputs a closing movement pulse signal. 1) Opening / closing body abnormal lowering detection means for determining that the vehicle has been lowered due to its own weight. When this means is actuated, the clutch (9) is immediately connected to prevent the door (1) from closing and then the motor is moved. (7) is reversed and the door (1) is moved to close the door.
[0026]
The lowering amount of the door (1) when determining the lowering of the door (1) is set in consideration of the amount of rebound when the door (1) reaches the fully open position and comes into contact with a stopper or the like.
[0027]
Although not shown in the drawing, this control circuit detects that the opening / closing body abnormal lowering detecting means (22) detects the lowering of the door (1), and then detects that the reset switch (23 The memory means for disabling the opening operation of the operation switch (17) until it is reset by ().
[0028]
Next, with reference to the flowchart shown in FIG. 2, the flow of operation of the opening / closing device for a vehicle opening / closing body configured as described above will be described.
When the door (1) is in the fully closed position, if the operation switch (17) is opened in step (S1), the door lock (6) is released, and then in steps (S2) and (S3), the clutch (9 ) Is connected, the motor (7) rotates forward, and the door (1) is opened by the drive device (5).
[0029]
When the fully open position of the door (1) is detected in step (S4), the clutch (9) is disconnected and the rotation of the motor (7) is stopped in steps (S5) and (S6).
[0030]
In step (S7), the timer (21) starts measuring a preset time from the time when the fully open position of the door (1) is detected. If the door closing movement of the door (1) is not detected during the time counting by the timer (21), the door (1) is held in the fully open stopped state by the gas stay (4) in step (S8).
[0031]
When the closing movement of the door (1) is detected in step (S7), in step (S9), the gas stay (4) is recognized as a failure by the opening / closing body abnormal lowering detecting means (22), and the step is immediately performed. In (S10), the clutch (9) is connected, and the door (1) is prevented from moving to close and kept in the fully open position.
[0032]
After the clutch (9) is connected, in step (S11), the motor (7) is reversely rotated to move the door (1) to close, and in step (12), the door lock (6) is engaged with the striker. When the fully closed state is detected, the clutch (9) is disengaged and the motor (7) is stopped in steps (S13) and (S14), and the fully closed stop state is entered in step (S15).
[0033]
In step (S16), if the reset switch (23) is not operated, the subsequent opening operation of the operation switch (17) is held in an impossible state, and the user knows that the gas stay (4) has failed. be able to. Further, when the reset switch (23) is operated, the door lowering memory is reset, and the operation switch (17) can be opened.
[0034]
In the above-described embodiment, the opening / closing body movement detecting means for detecting the moving direction and the fully opened position of the door (1) is the rotation sensor (18) for measuring the rotation of the driving pulley (11). Is not limited to this, and various modifications are possible.
[0035]
For example, as shown in FIG. 6, instead of the rotation sensor (18), it is turned on when the door (1) moves to the door (1) or the vehicle body side and reaches the position of the fully open position, and is fully opened. A limit switch (24) that is turned off when moving from the position to the door closing direction is provided. When the limit switch (24) is turned on, the clutch (9) is disconnected, the motor (7) is stopped, and the timer (21 ) Is started, and when it is switched from on to off within the set time of the timer (21), it may be determined that the gas stay (4) has failed, and the clutch (9) may be connected.
[0036]
When the opening / closing body movement detection means is a limit switch (24), the counting circuit (20) of the above embodiment is not necessary. Since other elements in FIG. 6 are the same as those in the above embodiment, the same reference numerals as those in the above embodiment are given to the same parts, and detailed description thereof is omitted.
[0037]
Further, in the above-described embodiment, the case where the door (1) is automatically opened has been described. However, even when the door (1) is fully opened by manual operation, the timer ( If the door (1) moves within the set time of 21), the clutch (9) is connected, the door (1) is held in the fully open position, and then the door (1) can be closed by the motor (7). It can be done.
[0038]
Furthermore, in the flowchart shown in FIG. 2, step (S11) and step (S14) may be omitted. In this case, the speed reduction device (8) is set to a reduction ratio that allows the door (1) to move and close with the dead weight of the door (1), and the door (1) is connected to the drive device (5) by connecting the clutch (9) in step (S10). It is linked and can move in the closing direction at a low speed with the above-described large resistance, ensuring safety.
[0039]
【The invention's effect】
According to the present invention, the following effects can be achieved.
(a) According to the first aspect of the present invention, when an abnormal lowering of the opening / closing body is detected in the fully opened state of the opening / closing body, the clutch is connected, and the opening / closing body is held in the fully opened position, or the speed reducing mechanism in the drive device. Due to the resistance of the motor and the resistance caused by the back electromotive force of the motor, the opening / closing body can be prevented from abruptly closing even when the fully-open holding mechanism is broken, and the opening / closing body and the vehicle body are damaged. Can be prevented in advance.
[0040]
(b) According to the invention of claim 2, in addition to the effect of (a) above, when the fully open holding mechanism fails, the opening / closing body can be safely closed to the fully closed position by operating the motor. The sex can be further enhanced.
[0041]
(c) According to the invention described in claim 3, after detecting the lowering of the opening / closing body due to its own weight, the opening operation of the operation switch becomes impossible, so that the driver can know the failure of the fully opened holding mechanism at an early stage. .
[0042]
(d) According to the invention described in claim 4, since the lowering amount of the opening / closing body for determining the lowering by the dead weight of the opening / closing body can be finely set as necessary, malfunction can be prevented.
(e) According to the invention described in claim 5, the configuration is simplified and the cost can be reduced.
[Brief description of the drawings]
FIG. 1 is a block diagram of a control circuit according to an embodiment of the present invention.
FIG. 2 is a flowchart showing the flow of door opening / closing control.
FIG. 3 is a schematic side view of a rear portion of the vehicle.
FIG. 4 is a partially cutaway plan view of the main part of the drive device.
5 is a cross-sectional view taken along line VV in FIG.
FIG. 6 is a block diagram of a control circuit according to another embodiment of the present invention.
[Explanation of symbols]
(1) Door (opening / closing body)
(2) Roof
(3) Hinge shaft
(4) Gas stay (fully open holding mechanism)
(5) Drive device
(6) Door lock
(7) Motor
(7a) Output shaft
(7b) Pinion
(8) Deceleration mechanism
(8a) Large diameter gear
(8b) Pinion
(8c) Large diameter gear
(8d) axis
(9) Clutch
(10) Output mechanism
(11) Drive pulley (output unit)
(12) Board
(13) Driven pulley
(14) Belt
(15) Connection bracket
(15a) Mounting piece
(16) Link
(17) Operation switch
(18) Rotation sensor (open / close body movement detection means)
(19) Drive circuit
(20) Counting circuit
(21) Timer
(22) Means for detecting abnormal lowering of opening / closing body
(23) Reset switch
(24) Limit switch (opening / closing body movement detection means)

Claims (5)

A fully open holding mechanism that can hold the open / close body in a fully open position between a vehicle body and an open / close body that can be opened and closed on the vehicle body, and a reduction mechanism and a clutch that reduce the rotational force of a motor that can rotate forward and backward. A drive device that transmits to the output unit and moves the output unit, and by operating an operation switch provided at an appropriate position of the vehicle, the clutch is engaged and the motor is rotated, In the opening / closing device for a vehicle opening / closing body that is configured to open / close the opening / closing body by the driving device,
An opening / closing body movement detecting means capable of detecting a movement of the opening / closing body in a fully opened position and a closing direction from the fully opened position;
A timer for measuring a preset time from the time when the opening / closing body movement detecting means detects the fully opened position of the opening / closing body;
Opening / closing body abnormality lowering detection means for detecting that the opening / closing body has been lowered by its own weight by detecting the movement of the opening / closing body from the fully open position to the closing direction during the time measurement by the timer. When,
An opening / closing device for a vehicle opening / closing body, comprising: a control circuit configured to connect the clutch by operating the opening / closing body abnormality lowering detecting means. A fully open holding mechanism that can hold the open / close body in a fully open position between a vehicle body and an open / close body that can be opened and closed on the vehicle body, and a reduction mechanism and a clutch that reduce the rotational force of a motor that can rotate forward and backward. A drive device that transmits to the output unit and moves the output unit, and by operating an operation switch provided at an appropriate position of the vehicle, the clutch is engaged and the motor is rotated, In the opening / closing device for a vehicle opening / closing body that is configured to open / close the opening / closing body by the driving device,
An opening / closing body movement detecting means capable of detecting a movement of the opening / closing body in a fully opened position and a closing direction from the fully opened position;
A timer for measuring a preset time from the time when the opening / closing body movement detecting means detects the fully opened position of the opening / closing body;
Opening / closing body abnormality lowering detection means for detecting that the opening / closing body has been lowered by its own weight by detecting the movement of the opening / closing body from the fully open position to the closing direction during the time measurement by the timer. When,
An opening / closing device for a vehicle opening / closing body, comprising: a control circuit configured to connect the clutch and reversely rotate the motor when the opening / closing body abnormality lowering detection means is operated. The control circuit includes storage means for disabling operation of the operation switch until the reset is reset after the opening / closing body abnormal lowering detection means is actuated until the opening / closing body is moved to the fully closed position. The opening / closing apparatus of the opening / closing body for vehicles as described. The opening / closing of the vehicle opening / closing body according to any one of claims 1 to 3, wherein the opening / closing body movement detecting means is a rotation sensor that is provided on a rotation shaft of the drive device and measures a rotation amount and a rotation direction of the rotation shaft. apparatus. The open / close body movement detecting means is a switch provided on the open / close body or the vehicle body, which is activated when the open / close body reaches the fully open position and deactivated when the open / close body moves away from the fully open position. The opening / closing device of the opening-closing body for vehicles as described in any one of.

Images