JP3782676B2 - Opening and closing device for opening and closing body - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an opening / closing device in which an opening / closing body such as a trunk lid, a back door, or a hood of an automobile is opened and closed by a motor.
[0002]
[Prior art]
Conventionally, in this type of switchgear, a hinge arm that pivotally mounts the switchgear on the vehicle body and an output arm that is rotated by a motor of the switchgear mounted in the trunk room are connected to each other. The opening / closing body is opened and closed by rotation (see, for example, Japanese Utility Model Publication No. 63-117979).
[0003]
In addition, when the open / close body is rotated to the fully open position by the motor, the detection switch detects the fully open position of the output arm, thereby stopping the power supply to the motor and stopping the open / close body at the fully open position. It is supposed to let you.
[0004]
[Problems to be solved by the invention]
However, it is difficult for the opening / closing device for the opening / closing body as described above to accurately stop the opening / closing body at the fully open position due to variations in the mounting accuracy of each component such as the opening / closing body, the hinge arm, the output arm, and the detection switch. It is.
[0005]
For this reason, when the opening / closing body is opened by the motor, the hinge arm on the opening / closing body vigorously contacts the stopper on the vehicle body side, and a large collision noise is generated. There is a possibility that each component is damaged due to the impact.
[0006]
In view of the above-described problems of the prior art, the present invention aims to improve quality and durability by preventing the open / close body side from colliding with the stopper when the open / close body is opened by a motor. It is an object of the present invention to provide an open / close device for an open / close body.
[0007]
[Means for Solving the Problems]
According to the present invention, the above problem is solved as follows.
(1) an opening / closing body pivotally supported by a vehicle body or the like so as to be able to be opened / closed in an up / down direction, an urging means provided between the vehicle body or the like and the opening / closing body, And an output arm that opens and closes the opening / closing body and an operating force transmission path between the motor and the output arm, and transmits or does not transmit the rotational force of the motor to the output arm. A clutch for transmission, and a detection means for detecting a half-open position before the full-open position of the opening / closing body when the output arm is rotated in the opening direction by the motor. By detecting the half-open position, the clutch is brought into a non-transmitting state, and the opening / closing body is rotated from the half-open position to the full-open position by the biasing force of the biasing means.
[0008]
(2) an opening / closing body pivotally supported by a vehicle body or the like so as to be opened / closed in the vertical direction, a biasing means provided between the vehicle body and the opening / closing body and biasing the opening / closing body in the opening direction; An output gear that is rotated by the output gear, and an output arm that is rotated by the output gear in an opening direction and a closing direction, opens and closes the opening and closing body, and is rotatable in the opening direction when the output gear is stopped, Detecting means for detecting a half-open position before the fully open position of the opening / closing body when the output arm is rotated in the opening direction by the motor, and the detection means detects the half-open position of the opening / closing body. Thus, the motor is stopped and the opening / closing body is rotated from the half-open position to the fully-open position by the urging force of the urging means.
[0009]
(3) In the above item (1), when the clutch is in a non-transmission state, the motor is stopped simultaneously with the predetermined time.
[0010]
(4) In the above item (1) or (2), the detection means is a detection switch for detecting the half-open position of the output arm.
[0011]
(5) In the above item (1) or (3), the detecting means is a rotary encoder that is provided in an operating force transmission path between the output side and the opening / closing body of the clutch and detects the rotational speed of the output side of the clutch. .
[0012]
DETAILED DESCRIPTION OF THE INVENTION
A first embodiment of the present invention will be described below with reference to FIGS. In the following description, the left side in FIGS. 1 and 2 is the “front” of the automobile and the right side is “rear”.
[0013]
FIG. 1 is a schematic side view of a rear portion of an automobile, and FIG. 2 is a left side view of the switchgear. (1) is a trunk lid that opens and closes the trunk room (1a), which is pivotally attached to the rear part of the vehicle body with a pair of left and right hinge arms (2) having left and right hinge shafts (2a), and is shown by a solid line in FIG. It can be rotated between a fully closed position and a fully open position indicated by a two-dot chain line.
[0014]
(3) is a gas stay that is provided between the hinge arm (2) and the vehicle body so as to be stretchable and serves as a biasing means for applying a biasing force in the opening direction to the trunk lid (1). The trunk lid (1) in the fully open position is restricted from further rotation in the opening direction by the hinge arm (2) contacting the stopper (S) provided on the vehicle body.
[0015]
(4) is a locking device attached to the rear end of the trunk lid (1). By engaging with a striker (5) supported on the vehicle body side, the trunk lid (1) is restrained to a fully closed state. To do.
[0016]
(6) is a closure device that is mounted on the vehicle body side and moves the striker (5) in the closing direction. When the locking device (4) is engaged with the striker (5), the trunk lid (1) is completely closed. Forcibly move from the close position to the fully closed position.
[0017]
(7) is an open / close device that is connected to the left hinge arm (2) and opens and closes the trunk lid (1). A plurality of bolts (not shown) are provided on the left front panel (vehicle body side) in the trunk room (1a). ) Is fixed to a base plate (8) fixed to the motor (9) capable of forward and reverse rotation, a speed reduction means (10) for reducing the rotational force of the motor (9), and a speed reduction means (10). An electromagnetic clutch (11), an output gear (12), an output arm (13), a first detection switch (14), and a second detection switch (detecting means for detecting the half-open position of the opening / closing body (1)) 15).
[0018]
As shown in FIG. 4, the rear flange (8a) of the base plate (8) is provided with an engaging portion (16) protruding leftward.
[0019]
As shown in FIGS. 3 and 4, the motor (9) has a rotating shaft (not shown) on the right side surface (8b) of the base plate (8) via a plurality of left and right legs (9a). It is fixed so as to face in the vertical direction, and is controlled to rotate in a predetermined direction by operation of a remote control switch or an operation switch (not shown) provided in the vicinity of the trunk room (1a).
[0020]
The speed reduction means (10) is disposed on the right side surface (8b) of the base plate (8), and engages with a worm (not shown) fixed to the rotating shaft of the motor (9), and a worm wheel A first gear (18) meshing with the small gear (17a) of (17) and a left end portion of a left and right shaft (19) to which the first gear (18) is pivotally attached, and a base plate (8) And a second gear (20) protruding toward the left side surface (8c).
[0021]
The electromagnetic clutch (11) is provided between the first gear (18) and the second gear (20), that is, in the operating force transmission path between the motor (9) and the output arm (13). The rotational force is transmitted or not transmitted to the output arm (13), and the connection between the first gear (18) and the second gear (20) is normally disconnected (non-transmitted state). When power is supplied by the operation of the switch or the operation switch, the transmission state is established, the first gear (18) and the second gear (20) are connected, and the rotational force of the motor (9) is supplied to the second gear (20 ).
[0022]
The output gear (12) is pivotally attached to the left side surface (8c) of the base plate (8) with the left and right axis (21) so as to face the motor (9) across the base plate (8) in the left and right direction. And, by the rotation of the motor (9), the speed reduction means (10), the electromagnetic clutch (11) in the transmission state, the second gear (20), and the intermediate gear (22) pivotally attached to the base plate (8) , Can be rotated clockwise and counterclockwise.
[0023]
The output arm (13) is pivotally attached to the left side surface (8c) of the base plate (8) with the shaft (21) so as to be able to rotate integrally with the output gear (12), and in the left-right direction at the free end. It is connected to the hinge arm (2) at an appropriate position via a link (24) pivotally attached to the shaft (23).
[0024]
In the vicinity of the free end of the output arm (13), the output arm (13) can be engaged with the engaging portion (16) of the base plate (8) when the output arm (13) is in the overstroke position beyond the fully open position (B). An opening (13a) is also provided, and an extension piece (13b) extending in the counterclockwise direction is also provided at the center. The output arm (13) can be slightly tilted in the axial direction.
[0025]
In the attachment state in which the switchgear (7) is attached to the panel and the link (24) is connected to the hinge arm (2), the output arm (13) is driven by the rotation of the motor (9) to reduce the speed reduction means (10) and electromagnetic Through the clutch (11), the trunk lid (1) is in the fully closed position, and the fully closed position (A) shown by the solid line in FIG. 2 is rotated from the fully closed position (A) to the opening direction (counterclockwise). Thus, it can rotate between the fully open position (B) indicated by the two-dot chain line with the trunk lid (1) as the fully open position.
[0026]
The first detection switch (14) is disposed around the output gear (12) on the left side surface (8c) of the base plate (8), and contacts the outer surface of the flange (13c) of the output arm (13). The position slightly before the fully closed position (A) of the output arm (13) is detected.
[0027]
The second detection switch (15) is disposed in the vicinity of the engaging portion (16) on the left side surface (8c) of the base plate (8), and comes into contact with the extending piece (13b) of the output arm (13). 6, the half-open position (C) slightly before the full-open position (B) of the output arm (13) is detected.
[0028]
The trunk lid (1) in the fully closed position can be opened by releasing the engagement between the lock device (4) and the striker (5) by manual operation. At this time, since the electromagnetic clutch (11) is in a non-transmitting state, the trunk lid (1) can be opened with a light force without receiving the resistance of the speed reduction means (10) and the motor (9).
[0029]
When the remote control switch or the operation switch is opened while the trunk lid (1) is in the fully closed position, the engagement between the lock device (4) and the striker (5) is released by an actuator (not shown). Next, power is supplied to the motor (9) and the electromagnetic clutch (11), and the output arm (13) is rotated in the opening direction from the fully closed position (A) to open the trunk lid (1) in the opening direction. Rotate.
[0030]
When the trunk lid (1) reaches the half-open position before the full-open position, the second detection switch (15) detects the output arm (13) rotated to the half-open position (C), so that the motor (9) and The power supply to the electromagnetic clutch (11) is stopped, and the electromagnetic clutch (11) cuts the operating force transmission path between the motor (9) and the output arm (13).
[0031]
As a result, the trunk lid (1) in the half-open position is slowly rotated in the opening direction by the biasing force of the gas stay (3), and the hinge arm (2) comes into contact with the stopper (S) and stops at the fully-open position. To do. That is, the trunk lid (1) is opened by the motor (9) in the range (L1) from the fully closed position to the half-open position, and by the gas stay (3) in the range (L2) from the half-open position to the fully open position. . The half-open position of the trunk lid (1) is preferably 10 degrees before the fully open position.
[0032]
When the operation switch is closed when the trunk lid (1) is in the fully open position, the output arm (13) is rotated in the closing direction from the fully open position (B) by the rotation of the motor (9). Operate the trunk lid (1) in the closing direction.
[0033]
When the locking device (4) is engaged with the striker (5) and the trunk lid (1) reaches a position slightly before the fully closed position, the first detection switch (14) is moved to the position of the output arm (13). And the power supply to the motor (9) and the electromagnetic clutch (11) is stopped. Thereafter, the trunk lid (1) is moved to the fully closed position by the closure device (6).
[0034]
7 to 9 show a second embodiment of the present invention. This embodiment does not have the electromagnetic clutch (11) in the above embodiment.
[0035]
The output gear (25) and the output arm (26) are pivotally attached to the base plate (28) with the shaft (27) so that they can independently rotate, and are provided on the output gear (25). When the engagement portion (26a) provided on the output arm (26) is engaged with the circular arc hole (25a), the arc hole (25a) is connected via play corresponding to the opening / closing stroke of the trunk lid (1). .
[0036]
As shown in FIG. 7, when the remote control switch or the operation switch is opened when the output arm (26) is in the fully closed position (A), the motor (9) rotates in a predetermined direction to reduce the speed reduction means (10). The output gear (25) is rotated counterclockwise from the neutral position shown in FIG. 7 via the second gear (20) and the intermediate gear (22), and one end portion of the arc hole (25a) ( 25b) abuts on the engaging portion (26a). Accordingly, the output arm (26) is rotated counterclockwise, and the trunk lid (1) is rotated in the opening direction via the link (24) and the hinge arm (2).
[0037]
As shown in FIG. 8, when the output arm (26) reaches the half-open position (C) and the second detection switch (15) detects the half-open position (C) of the output arm (26), the motor (9) is moved to. Temporarily stop the power supply. As a result, the output gear (25) stops at the half-open position.In this state, the output arm (26) can rotate in the opening direction with respect to the output gear (25). A certain trunk lid (1) is slowly rotated in the opening direction by the biasing force of the gas stay (3), and the hinge arm (2) abuts against the stopper (S) and stops at the fully opened position.
[0038]
As shown in FIG. 9, after the output arm (26) is rotated to the fully open position (B), or before that, the motor (9) is controlled to reverse.
[0039]
The detection unit (25c) provided on the output gear (25) contacts the arm (29a) of the neutral detection switch (29) fixed to the base plate (28), and the neutral detection switch (29) 25) By detecting the neutral position, the power supply to the motor (9) is stopped, and the output gear (25) stops at the neutral position.
[0040]
FIG. 10 shows a third embodiment of the present invention. In the third embodiment, the second detection switch (15) in the first embodiment is removed from the base plate (8), and instead, between the output side of the electromagnetic clutch (11) and the trunk lid (1). A rotary encoder (30) is provided in the operating force transmission path.
[0041]
Since other configurations are the same as those of the first embodiment, the same reference numerals are given to the same portions, and detailed description thereof is omitted.
[0042]
The rotary encoder (30) is linked to the second gear (20) on the output side of the electromagnetic clutch (11), and the trunk lid at that time is measured by measuring the rotation speed and the rotation direction of the second gear (20). The position and moving direction of (1) are detected. The number of pulses, which is an output signal output from the rotary encoder (30), is sent to a control circuit (not shown).
[0043]
In the control circuit, the fully closed position of the trunk lid (1) is set as an initial value, and the number of pulses generated by the rotary encoder (30) when the trunk lid (1) moves from the fully closed position to the half-open position is preset. Is stored as necessary information.
[0044]
When the trunk lid (1) is rotated in the opening direction from the fully closed position, the number of pulses output from the rotary encoder (30) is continuously counted, and the number of pulses being counted is stored in the control circuit. By reaching the number of pulses, the half-open position of the trunk lid (1) is detected.
[0045]
When the trunk lid (1) reaches the half-open position, the power supply to the electromagnetic clutch (11) is stopped and at the same time or after a predetermined time, the power supply to the motor (9) is stopped. The lid (1) is slowly moved to the fully open position by the biasing force of the gas stay (3).
[0046]
As a result, the trunk lid (1) does not stop once in the half-open position, moves smoothly to the full-open position by natural movement, and does not apply an excessive load to the stopper (S) or the like.
[0047]
The rotary encoder (30) can also be applied to the second embodiment. In this case, when the rotary encoder (30) detects the half-open position of the trunk lid (1), the power supply to the motor (9) is stopped.
[0048]
The present invention can be applied to a back door, a hood, and the like that open and close in addition to the trunk lid.
[0049]
【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 the opening / closing body is opened by the motor, the clutch is disengaged in front of the fully opened position of the opening / closing body, and then the opening / closing body is fully opened from before the fully opened position by the urging force of the urging means. Since it can be slowly rotated to the position, the hinge arm does not abut against the stopper vigorously. Therefore, generation of a loud collision sound and deformation of each component can be prevented, and a sense of quality and durability can be improved.
[0050]
(B) According to the invention of claim 2, the same effect as that of claim 1 can be obtained without requiring an electromagnetic clutch.
[0051]
(C) According to the invention described in claim 3, since the opening / closing body does not stop once in the fully opened position, the opening / closing body can be smoothly rotated to the fully opened position with natural movement.
[0052]
(D) According to the invention of claim 4, the half-open position of the opening / closing body can be detected easily and reliably without using an expensive control circuit.
[0053]
(E) According to the invention described in claim 5, it is possible to detect the opening / closing speed, direction, and position of the opening / closing body without newly adding a detection device, and the function of the opening / closing control can be easily expanded. Can do.
[Brief description of the drawings]
FIG. 1 is a schematic side view of a rear portion of an automobile according to a first embodiment of the present invention.
FIG. 2 is a left side view of the switchgear.
FIG. 3 is a right side view of the switchgear.
4 is a view taken along arrow IV in FIG.
5 is a longitudinal sectional view taken along line VV in FIG.
FIG. 6 is also a left side view of the main part when the output arm is in the half-open position.
FIG. 7 is a left side view of the switchgear according to the second embodiment of the present invention.
FIG. 8 is also a left side view of the main part when the output arm is in the half-open position.
FIG. 9 is a left side view of the main part when the output arm is in the fully open position.
FIG. 10 is a left side view of the switchgear according to the third embodiment of the present invention.
[Explanation of symbols]
(1) Opening and closing body (trunk lid)
(1a) Trunk room
(2) Hinge arm
(2a) Hinge shaft
(3) Gasty (biasing means)
(4) Locking device
(5) striker
(6) Closure device
(7) Opening and closing device
(8) Base plate
(8a) Flange
(8b) One side (right side)
(8c) Other side (left side)
(9) Motor
(9a) Leg
(10) Deceleration means
(11) Electromagnetic clutch
(12) Output gear
(13) Output arm
(13a) Opening
(13b) Extension piece
(13c) Flange
(14) First detection switch
(15) Second detection switch (detection means)
(16) Engagement part
(17) Worm wheel
(17a) Small gear
(18) 1st gear
(19) axis
(20) Second gear
(21) axis
(22) Intermediate gear
(23) Axis
(24) Link
(25) Output gear
(25a) Circular hole
(25b) One end
(25c) Projection
(26) Output arm
(26a) Engagement part
(27) Axis
(28) Base plate
(29) Neutral detection switch
(30) Rotary encoder (detection means)
(S) Stopper

Claims (5)

An opening / closing body pivotally supported by the vehicle body or the like so as to be opened and closed in the vertical direction, an urging means provided between the vehicle body and the opening / closing body and urging the opening / closing body in the opening direction, and an opening direction by the motor And an output arm that is rotated in the closing direction to open and close the opening and closing body, and an operating force transmission path between the motor and the output arm, and transmits or does not transmit the rotational force of the motor to the output arm. A clutch, and a detection means for detecting a half-open position before the full-open position of the opening / closing body when the output arm is rotated in the opening direction by the motor;
The detection means detects the half-open position of the opening / closing body, thereby bringing the clutch into a non-transmission state and rotating the opening / closing body from the half-open position to the fully-open position by the biasing force of the biasing means. An opening / closing device for an opening / closing body characterized by the above. An opening / closing body pivotally supported by the vehicle body and the like so as to be opened and closed in the vertical direction, a biasing means provided between the vehicle body and the opening / closing body and biasing the opening / closing body in the opening direction, and rotated by a motor And an output arm that is rotated in the opening direction and the closing direction by the output gear, opens and closes the opening and closing body, and is rotatable in the opening direction when the output gear is stopped, and the motor Detecting means for detecting a half-open position before the fully-open position of the opening and closing body when the output arm is rotated in the opening direction;
The detecting means detects the half-open position of the opening / closing body, thereby stopping the motor and rotating the opening / closing body from the half-open position to the fully-open position by the biasing force of the biasing means. An opening / closing device for an opening / closing body. 2. The opening / closing device for an opening / closing body according to claim 1, wherein the motor is stopped at the same time or after a predetermined time has elapsed since the clutch is in a non-transmission state. 3. An opening / closing device for an opening / closing body according to claim 1, wherein the detecting means is a detection switch for detecting a half-open position of the output arm. The opening / closing device for an opening / closing body according to claim 1 or 3, wherein the detecting means is a rotary encoder provided in an operating force transmission path between the output side and the opening / closing body of the clutch and detecting the rotational speed of the output side of the clutch.

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