JPH024742B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for easily and reliably completely closing an automobile door.

Conventional car door closing devices such as Tokkosho
42-22888), the weather strip reaction force, lock resistance, air resistance,
Since hinge resistance and the like act on the door, in order to reliably close the door, the door must be closed forcefully or with considerable force.

However, when the door is forcefully closed, a shock is applied to the door and the vehicle body, which has a negative impact and generates an impact sound, which makes people around the vehicle feel uncomfortable.

In addition, automatic door opening/closing devices that automatically open and close automobile doors using drive means such as motors, pneumatics, and hydraulics have a configuration in which the door is opened and closed near the hinge of the door. A considerable amount of force is required just before the door fully closes, and a large force is applied to the door and the center pillar on the vehicle body side, potentially deforming the door and center pillar.

In view of the above-mentioned points, the present invention provides a pair of through holes on each of the door side and the vehicle body side that align when the door is completely closed, and provides a reciprocating movement that can freely move in and out of either of the through holes. A piston rod linked to a driving source is provided so that when the door is half-latched, the piston rod penetrates into the other hole to forcibly close the door completely, thereby reducing weather strip reaction force and The door can be easily and reliably closed from the half-latched position, where the door is most difficult to close due to locking resistance, to the full-latched position.

Embodiments will be described below based on embodiments shown in the accompanying drawings.

1 is a car door, the front end of which has upper and lower parts 1
It is pivotally connected to a center pillar (not shown) of the vehicle body with a pair of hinges 2. A door lock 22 is provided on the rear end plate 5 of the door 1, and the door lock 22 engages and disengages with a striker 23 fixed to a side rear frame of the vehicle body.

3 is a cylindrical body having a horizontal cylindrical shape and having a flange 4 connected to the rear end, and the flange 4 is connected to the rear end plate 5 of the door 1 through the through hole 6 of the cylindrical body 3 and the rear end plate. The hole 7 drilled in the hole 5 is fixed in alignment with the hole 7 drilled in the hole 5 .

Reference numeral 8 denotes a short guide tube fixed to the vehicle body 10 by an outward flange 9 connected to one end. It is adapted to align with hole 6. Further, when the door 1 is half-latched, the through hole 11 of the guide tube 8 and the through hole 6 of the cylindrical body 3 are positioned slightly offset from each other in the door opening/closing direction. The term "half-latched" refers to when the door lock 22 barely engages with the striker 23, and the term "fully closed" refers to when the door lock 22 completely engages with the striker 23 and the door 1 is completely closed. .

Reference numeral 12 denotes a motor that serves as a driving source and is fixed to a proper position on the inner panel 1a of the door 1;
The rotating shafts 13 of are connected to an input shaft 15 of a speed reducer 14 fixed at a proper position on the inner panel 1a so as to rotate in synchronization with each other.

Reference numeral 16 denotes a worm fixed to the center of the input shaft 15, and the worm 16 meshes with a worm wheel 17 pivotally supported at the center of the reducer 14. It is installed protrudingly.

19 is a piston rod whose rear end is inclined 19a into a pointed shape and is slidably fitted into the cylindrical body 3;
The front end of the piston rod 19 is connected to the output shaft 18 via a long connecting rod 20 and a short crank 21.

Next, the procedure for closing the door using the apparatus of this embodiment described above will be explained with reference to FIGS. 2 to 5.

The open door 1 is rotated around the hinge 2 to close it, and the door lock 22 is activated by the striker 23.
The half-latched state shown in FIG.

When the motor 12 is then operated, the motor 12
The rotation of the rotation axis 13, input shaft 15, worm 1
6. It is transmitted to the output shaft 18 via the worm wheel 17.

Then, the short crank 21 connected to the output shaft 18 pivots clockwise as shown by the phantom line in FIG. 1, and the long connecting rod 20 pivoted to the other end of the crank 21 pivots. , the piston rod 19 is slid rearward, and the tip of the piston rod 19 comes into contact with the front end peripheral edge of the through hole 11 of the guide tube 8, as shown in FIG.

When the motor 12 continues to operate, the piston rod 19 moves toward the inclined portion 1, as shown by the imaginary line in FIG.
Enter the guide tube 8 while bringing the door 9a into contact with the peripheral edge of the through hole 11 of the guide tube 8, and forcibly move the door 1 in the closing direction (see FIGS. 5), and the door 1 becomes fully closed as shown in FIG.

When the motor 12 is further rotated, the short crank 21 rotates clockwise, and the long connecting rod 2
0, the piston rod 19 is pulled forward, and the piston rod 19 returns to its original position, as shown in FIG. 5, while keeping the door 1 in the fully closed state.

According to the device of this embodiment, after the door 1 is brought into the half-latched state, the motor 12 is operated to move the piston rod 19 back and forth, thereby connecting the through hole 6 on the door 1 side and the through hole 11 on the vehicle body 10 side. The fully closed state can be achieved by simply aligning the door 1, and the door 1 can be completely closed easily and reliably with only a small amount of force.

Furthermore, there is no impact applied to each member or generation of impact noise during the closing operation, and there is no possibility of each member deforming or causing discomfort to surrounding people as in the conventional case.

In addition, when opening the door 1, the piston rod 1
9 is disengaged from the cylindrical body 8 fixed to the vehicle body 10, and the piston rod 19 has returned to its original position, so the door can be opened without any problem.

In the above embodiment, the device of the present invention is attached to the hinge 2.
Although the present invention has been described as being used for a door 1 that rotates around the center, the present invention is not limited to this. For example, the present invention can also be used for a sliding door that is opened and closed by sliding the door back and forth. It is possible.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway view of a door showing an embodiment of the present invention, and FIGS. 2 to 5 are schematic diagrams showing how the door is closed by the back and forth movement of the piston rod in the above embodiment. FIG. 2 is a cross-sectional plan view showing the door in a half-latched state; FIG. 3 is a cross-sectional plan view showing the piston rod sliding rearward and its tip abutting the periphery of the through hole of the guide tube; and FIG. This figure is a cross-sectional plan view showing a state in which the piston rod has entered the guide cylinder and the door is completely closed, and FIG. 5 is a cross-sectional plan view showing a state in which the piston rod has returned to its original position. 1...Door, 6...Through hole, 10...Vehicle body, 11
...Through hole, 19... Piston rod, 12... Drive source.

Claims (1)

[Claims] 1. A pair of through holes are provided on each of the vehicle body side and the door side of the vehicle, which align when the door is fully closed, and are linked to a drive source so as to be able to reciprocate in and out of either of the through holes. A door closing device for an automobile, characterized in that a piston rod is provided, and the piston rod penetrates into the other through hole when the door is half-latched, thereby forcibly completely closing the door.