JPH108827A - Door closure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce size and cost of a driving mechanism by reducing a maximum load on the driving mechanism thereby making it possible to employ a driving source of a relatively small output. SOLUTION: When a door is to be closed, a sector gear 26 is rotated with a driving force of a motor 27 in the direction of arrow D1 to move a closing lever from a standby position to a working position through a wire 21. Here, a spring 29 assist the rotation of the sector gear 26 so that the load on the motor 27 is alleviated. When the door is closed, the sector gear 26 is rotated wit the driving force of the motor 27 in the direction of arrow D2 so that the closing lever is returned to the standby position.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door closure for automatically closing a door, and more particularly, to a moving body movable between a standby position and an operating position by a driving force of a driving mechanism. The present invention relates to a door closure for closing a door by moving a moving body from a standby position to an operating position, and returning the moving body from the operating position to the standby position when the door is closed.

[0002]

2. Description of the Related Art Conventionally, as this type of door closure, for example, the one described in Japanese Patent Application Laid-Open No. 1-105886 has been known.

[0003] Such a door closure is provided in a door lock device of a sliding door for an automobile, and a latch member of the door lock device is placed at a half-latch position (in the same publication,
When the half-lock position is reached, the drive motor of the door closure starts rotating forward, and the drive lever as a moving body rotates from the standby position to the operating position to move the latch member to the full latch position (the same position). In the gazette, it is moved to a "full lock position"). 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 on the drive motor becomes extremely small.

Accordingly, a drive motor having an output corresponding to a large load applied when the slide door is pulled in is employed.

[0005]

However, adopting a high-output drive motor corresponding to a large load applied when the sliding door is pulled in like the above-mentioned conventional door closure requires a large-sized door closure drive mechanism. And cost increase.

SUMMARY OF THE INVENTION An object of the present invention is to reduce the maximum load applied to a drive mechanism, to make it possible to employ a drive source having a relatively low output, and to realize a reduction in size and cost of the drive mechanism. It is to provide a door closure.

[0007]

A door closure according to the present invention includes a movable body movable between a standby position and an operating position by a driving force of a driving mechanism, and the movable body is moved from the standby position to the operating position. A door closure forcibly closing a door by moving the door, and returning the moving body from an operating position to a standby position when the door is closed, wherein the moving body is moved during a driving system of the moving body. An assisting means is provided for assisting movement of the body from the standby position to the operating position.

[0008]

Embodiments of the present invention will be described below with reference to the drawings.

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, which is an operation mechanism 20 on the door lock device 10 side.
-1 is driven by the drive mechanism 20-2 via the wire 21.

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 an arrow about the axis O1. It is provided rotatably in the C1 and C2 directions. Then, when the door 1 is closed and the striker and the latch member 12 are fully latched, the 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.

Actuation mechanism 20-1 of 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. The closing lever 22 is configured such that the wire 21
When the latch member 12 is pulled in the direction shown in FIG. 2, it rotates 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. 12 is rotated in the direction of arrow C1, and is rotated from a half-latch position at which engagement with the striker is started to a 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.

FIG. 3 shows the driving mechanism 2 of the door closure 20.
FIG. 3 is an enlarged view of a line 21 in which a wire 21
Is provided rotatably about the axis O3 in the directions of arrows D1 and D2. A pinion gear 28 that is driven to rotate by a reversible motor 27 meshes with the sector gear 26. 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.

Next, the operation will be described.

The door closure 20 operates when the door 1 is closed to a so-called half-door state and the latch member 12 of the door lock device 10 is rotated to a half-latch position where engagement with the striker is started. Start.

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. This closing lever 22
The latch member 1 contacts the projection 12A of the latch member 12 and
2 is rotated in the direction of arrow C1, and is rotated from the half-latch position to the full-latch position where the striker is completely engaged. As a result, the door 1 is retracted to the lock position and automatically closed, and locked in the closed state. Hereinafter, such an operation is referred to as a “close operation”.
That.

Thereafter, when the motor 27 rotates in the reverse direction, the sector gear 26 rotates in the direction of arrow D2,
1 is returned in the direction of arrow A2, and the close lever 22 is rotated and returned in the direction of arrow B2. Hereinafter, such an operation is referred to as a “return operation”.

By the way, in the former closing operation, in addition to the pull-in resistance of the door 1,
A large load is applied due to 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, the tension force of the spring 29 is smaller than that of the sector gear 26.
, The load on the motor 27 increases accordingly. However, although the load of the motor 27 at the time of the latter return operation is increased, it is still smaller than the load of the motor 27 at the time of the former close operation.

As a result, the spring 29 suppresses the maximum load applied to the motor 27 to a small value, so that a relatively low-output motor 27 can be used.
The drive mechanism 20-2 can be reduced in size and cost.

The tensile force of the spring 29 is
Although the sector gear 26 is always urged in the rotation direction of the arrow D1, the worm and the worm wheel are provided in the drive system between the motor 27 and the pinion gear 28, so that the sector gear 26 and the motor 27 There is no inadvertent rotation.

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 move the close lever 22 in the direction of arrow B1. It is only necessary that an auxiliary force can be generated when the rotary member is rotated. Furthermore, the auxiliary means is not limited to only the spring 29 as long as it can generate such an auxiliary force.

Further, in the case of the present embodiment, a latch drive type door closure is constructed in which the door 1 is forcibly closed by rotating the latch member 12 in the direction of engagement with the striker (the direction of arrow C1). However, conversely, the striker may be configured as a striker drive type door closure that moves the striker in the direction of engagement with the latch member 12.

[0022]

As described above, the door closure of the present invention drives the movable body which moves from the standby position to the operating position when closing the door, and returns to the standby position after closing the door. The system is equipped with auxiliary means to assist the movement of the moving body from the standby position to the operating position, reducing the maximum load on the driving mechanism of the moving body and enabling the use of a relatively low-power drive source. As a result, the size and cost of the driving mechanism can be reduced.

Further, by employing a spring as the auxiliary means, it is possible to avoid complication of the structure of the door closure and to further reduce the cost.

[Brief description of the drawings]

FIG. 1 is a schematic side view of an automobile door provided with 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 portion of the door closure shown in FIG.

[Description of Signs] 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)

[Claims] A moving body is movable between a standby position and an operating position by a driving force of a driving mechanism, and the door is forcibly closed by moving the moving body from the standby position to the operating position. A door closure for returning the movable body from the operating position to the standby position when the door is closed, wherein the drive system moves the movable body from the standby position to the operating position during the drive system of the movable body. A door closure comprising auxiliary means for assisting movement. 2. The auxiliary means is an elastic body for urging at least one of components of a driving system of the moving body,
2. The door closure according to claim 1, wherein the biasing direction is a moving direction when the moving body moves from the standby position to the operating position.