JP3556050B2 - Door closure - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a door closure that automatically closes a door, and more particularly, to a door closure that includes a movable body that can be moved between a standby position and an operating position by a driving force of a driving mechanism, and the movable body is in a standby state. The present invention relates to a door closure for closing a door by moving from a position to an operating position, and returning the moving body from the operating position to the standby position when the door is closed.
[0002]
[Prior art]
Conventionally, as this type of door closure, for example, one disclosed in Japanese Patent Application Laid-Open No. HEI 1-105886 is known.
[0003]
Such a door closure is provided in a door lock device of a sliding door for an automobile. When the latch member of the door lock device is at a half-latch position (in the publication, "half-lock position"), the door closure is driven. When the motor starts rotating forward, the drive lever as a moving body rotates from the standby position to the operating position, and moves the latch member to a full latch position ("full lock position" in the publication). At this time, the slide door is retracted to the lock position, and a load is applied to the drive motor of the door closure in addition to the retraction resistance of the slide door and the reaction force of the weather strip. Then, when the latch member moves to the full lock position, the drive motor of the door closure rotates in the reverse direction, and returns the drive lever as the moving body from the operating position to the standby position. In this case, the moving body moves idly, and the load applied to the drive motor becomes extremely small.
[0004]
Therefore, as the drive motor, one having an output corresponding to the large load applied when the slide door is pulled in is adopted.
[0005]
[Problems to be solved by the invention]
However, adopting a high-output drive motor corresponding to a large load applied when the sliding door is pulled in, as in the above-described conventional door closure, leads to an increase in the size and cost of the drive mechanism of the door closure. There was a problem.
[0006]
SUMMARY OF THE INVENTION It is an object of the present invention to provide a door closure capable of reducing the maximum load applied to a drive mechanism, making it possible to employ a drive source having a relatively low output, and reducing the size and cost of the drive mechanism. To provide.
[0007]
[Means for Solving the Problems]
The door closure of the present invention includes a movable body movable between a standby position and an operating position by a driving force of a drive mechanism, and forcibly forces the door by moving the movable body from the standby position to the operating position. A door closure that closes and returns the moving body from an operating position to a standby position when the door is closed, wherein a direction from the standby position of the moving body to the operating position during a driving system of the moving body. It is characterized by having auxiliary means for assisting the movement to the vehicle.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0009]
This embodiment is an example of application as a door closure provided in an automobile door, and FIG. 1 is a schematic side view of the door 1. In FIG. 1, reference numeral 10 denotes a door lock device, which locks the door 1 in a closed state by engaging with a striker (not shown) on the vehicle body side. Reference numeral 20 denotes a door closure, and an operation mechanism 20-1 on the door lock device 10 side is driven by a drive mechanism 20-2 via a wire 21.
[0010]
FIG. 2 is an enlarged view of the door lock device 10. In FIG. 2, a latch member 12 engageable with a striker (not shown) is attached to a base member 11 of the door lock device 10 by arrows C1, C2 around an axis O1. It is provided rotatably in the direction. Then, when the door 1 is closed and the striker and the latch member 12 are fully engaged with each other, a locking plate (not shown) locks the latch member 12 so that it cannot rotate. The locking plate releases the lock of the latch member 12 by operating the lock release lever via the wire 13.
[0011]
The operation mechanism 20-1 of the door closure 20 is provided with a closing lever 22 as a movable body that can rotate in the directions of arrows B1 and B2 about the axis O2. When the wire 21 is pulled in the direction of the arrow A1, the closing lever 22 rotates in the direction of the arrow B1 from the standby position indicated by the solid line in FIG. 2 to the operation position indicated by the two-dot chain line in FIG. The latch member 12 is rotated in the direction of arrow C1 by contacting the protrusion 12A of the twelve, and is rotated from the half latch position at which the engagement with the striker is started to the full latch position at which the striker is completely engaged. Thereafter, when the wire 21 is returned in the direction of the arrow A2, the closing lever 22 is returned to the standby position by the force of the spring 23. Reference numeral 24 denotes a full latch switch for detecting the full latch of the striker by the latch member 12.
[0012]
FIG. 3 is an enlarged view of the drive mechanism 20-2 of the door closure 20. A sector gear 26 connected to a wire 21 is provided on a base member 25 so as to be rotatable in directions of arrows D1 and D2 about an axis O3. ing. The sector gear 26 meshes with a pinion gear 28 driven to rotate by a reversible motor 27. In a power transmission system between the motor 27 and the pinion gear 28, a transmission mechanism including a worm and a worm wheel (not shown) is interposed. Between the base member 25 and the sector gear 26, a tension spring 29 as an auxiliary means for assisting the rotation of the sector gear 26 in the direction of arrow D1 is stretched. In FIG. 1, reference numeral 30 denotes a control unit for controlling the door closure 20.
[0013]
Next, the operation will be described.
[0014]
The door closure 20 starts operating when the door 1 is closed to a so-called half-door state and the latch member 12 of the door lock device 10 rotates to a half-latch position where engagement with the striker is started.
[0015]
That is, first, when the motor 27 rotates forward, the sector gear 26 rotates in the direction of arrow D1, the wire 21 is pulled in the direction of arrow A1, and the close lever 22 rotates in the direction of arrow B1. The close lever 22 comes into contact with the projection 12A of the latch member 12 to rotate the latch member 12 in the direction of arrow C1, and from the half latch position to the full latch position where the latch member 12 is completely engaged with the striker. As a result, the door 1 is retracted to the lock position and automatically closed, and is locked in the closed state. Hereinafter, such an operation is referred to as a “close operation”.
[0016]
Thereafter, when the motor 27 rotates in the reverse direction, the sector gear 26 rotates in the direction of arrow D2, the wire 21 is returned in the direction of arrow A2, and the close lever 22 returns to the direction of arrow B2. Hereinafter, such an operation is referred to as a “return operation”.
[0017]
By the way, in the former closing operation, a large load is applied to the motor 27 in addition to the pull-in resistance of the door 1 and the reaction force of the weather strip. However, the rotation of the sector gear 26 in the direction of arrow D1 is assisted by the tensile force of the spring 29, and the load on the motor 27 is reduced accordingly. On the other hand, in the latter return operation, since the close lever 22 idles in the direction of arrow B2, the load on the motor 27 is extremely small. However, since the tensile force of the spring 29 acts as a rotational resistance of the sector gear 26 in the direction of the arrow D2, the load on the motor 27 increases accordingly. However, although the load on the motor 27 at the time of the latter return operation is large, it is still smaller than the load of the motor 27 at the time of the former close operation.
[0018]
Eventually, the spring 29 suppresses the maximum load applied to the motor 27 to a small value, and accordingly, a relatively low-power motor 27 can be used, thereby reducing the size of the drive mechanism 20-2 and reducing the cost. Can be realized.
[0019]
By the way, although the tensile force of the spring 29 always urges the sector gear 26 in the direction of rotation of the arrow D1, a worm and a worm wheel are provided in a drive system between the motor 27 and the pinion gear 28. Therefore, the sector gear 26 and the motor 27 are not inadvertently rotated.
[0020]
The position of the spring 29 as an auxiliary means may be in the drive system of the close lever 22, and acts on at least one of the components of the drive system to rotate the close lever 22 in the direction of arrow B1. It suffices if an assisting force can be generated at this time. Furthermore, as long as such an auxiliary force can be generated, the auxiliary means is not limited to the spring 29 at all.
[0021]
Further, in the case of the present example, the latch member 12 is configured as a latch drive type door closure that forcibly closes the door 1 by rotating the latch member 12 in the direction of engagement with the striker (the direction of arrow C1). Conversely, a striker-driven door closure that moves the striker in the direction of engagement with the latch member 12 may be configured.
[0022]
【The invention's effect】
As described above, the door closure of the present invention moves from the standby position to the operating position when closing the door, and returns to the standby position after the door is closed. Equipped with auxiliary means for assisting the movement of the moving body from the standby position to the operating position, thereby reducing the maximum load on the driving mechanism of the moving body, making it possible to employ a relatively low-power drive source as the driving mechanism. Can be reduced in size and cost.
[0023]
Further, by adopting a spring as the auxiliary means, it is possible to avoid complication of the configuration of the door closure and further reduce the cost.
[Brief description of the drawings]
FIG. 1 is a schematic side view of an automobile door including an embodiment of the present invention.
FIG. 2 is an enlarged perspective view of the door lock device shown in FIG.
FIG. 3 is an enlarged view of a drive mechanism of the door closure shown in FIG. 1;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Door 10 Door lock device 20 Door closure 20-1 Operating mechanism 20-2 Drive mechanism 21 Wire 22 Close lever (moving body)
25 Base member 26 Sector gear 27 Motor 28 Pinion gear 29 Spring (auxiliary means)

Claims (2)

A moving body movable between a standby position and an operating position by a driving force of a driving mechanism, and forcibly closing a door by moving the moving body from the standby position to the operating position, A door closure for returning the moving body from an operating position to a standby position when closed,
A door closure, further comprising an auxiliary means for assisting movement of the moving body from a standby position to an operating position in a drive system of the moving body. The auxiliary means is an elastic body for urging at least one of the components of the drive system of the moving body, and the urging direction is when the moving body moves from the standby position to the operating position. The door closure according to claim 1, wherein the direction of movement is the moving direction.

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