JPS58178780A - Automatic door closing apparatus of automobile - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] A door such as a car door can be closed by the VC up to the half-latte position just before fully opening, but in order to fully close from the half-latte position to the full latch position, it is necessary to close the door with a weather strip. The reaction force and locking resistance act on the door, so a large amount of force is required.

Automatic door opening/closing devices that automatically open and close automobile doors using a drive means such as a motor are usually configured to open and close the door near the hinge of the door, so the automatic door opening/closing device automatically opens and closes the door just before the door is fully opened. Id: A large load will be applied to the door and the center pillar on the vehicle body side, and there is a risk that this part will become distorted.

An automatic door opening/closing device that solves the above-mentioned drawbacks has already been published and published by the present applicant as Tokuen No. 56-172152.
In this invention, the connecting rod provided in the door lock and transmitting a large driving force to fully close the door has connecting portions at both ends thereof having a thickness in the axial force direction, and the connecting rod at both ends is attached to the driving side to which the pivoting portions are pivoted. If the shafts on the and driven side move relatively on two planes that are orthogonal to each other, and the axial force direction of the pivot hole and the direction of both shafts change, there will be a diametrical force on both the upper and lower pivot joints. It is necessary to provide sufficient play in the axial direction when pivoting.

Therefore, rattling inevitably occurs when the door lock is in operation, so spring wheels and tin links are conveniently used to prevent rattling. Correspondingly, in order to prevent rattling, springs and the like must be large and the pivot joints must be complicated, making it difficult to solve this problem in crowded and narrow door locks.

The present invention relates to a closing device for an automatic door opening/closing device that solves the above-mentioned problems by changing the mounting condition of the connecting rod from the conventional one. I will explain based on this.

In Figures j and g1, (1) is a door of an automobile, the front end of which is pivotally connected to the vehicle body (not shown) with a pair of upper and lower door hinges (2), and the free end of which is equipped with the device of the present invention. It is installed internally.

(3) is a known reduction gear consisting of a motor, (')t'j worm gear and worm wheel, and the reduction gear 6 (4)
The base end is fixed to the output shaft (5) of the crank arm (
The proximal end of the first connecting rod (7) is pivotally attached to the free end of the connecting rod (6).

The - arm of the door lock (8) glue (LO) is pivoted on the free end of the first connecting rond (l), and the narrow arm has a shape that faces upward and downward as shown in Figures 2 and 3. Second series of shields (II)
The lower end mounting portion (11a) of is pivotally mounted.

The strand 2 connecting rond (11) has a pair of annular attachment parts (tta) made of, for example, die-cast zinc, for example, a spring;
It is formed by connecting with a continuous rod (nb) made of wood, and the third
As shown in the figure, when manufacturing, both the upper and lower mounting parts (lla)
The axes of the mounting holes (11a) are oblique.

Latch m pivotally attached to the board (9) of the door lock (8)
As shown in FIG. 8, on the 121, levers (] 3) are pivotally attached in order from the front, and a cam (1)
4) and the latch (shi) are firmly attached.

At the base periphery of the lever (1B), there is a protruding piece (13) facing backward.
a) is bent, and the sn'lhs second connecting rod 4 is also attached to the free end, and the mounting holes of both the upper and lower mounting portions (11a The upper end mounting portion (11a) is pivotally attached to the bottle (twisted so that the axis of the bottle can be heated directly).

At the periphery of the cam α→, there is a slightly protruding 1N bullet (14a).
), a second arcuate surface (14b) that further protrudes from the first arcuate surface (14a), and a stepped portion (14C) extending in the direction of centripetal force from the tip of the second arcuate surface (14b) are successively arranged. .

The door (1) is attached to the latch 05) by disengaging from and engaging with the striker (18) provided forwardly protruding from the rear frame α7) of the vehicle body.
An engaging groove 09) for opening and closing is cut out. Cam 0
The first circular arc surface (14a) of 4) locks the door (1) when the door (1) is closed to the no-flanch position shown in FIG. 8)
The first micro switch (company) fixed on the board (9) of
It is activated by coming into contact with it.

The second circular arc surface (14b) comes into contact with the second micro switch (21) fixed to the board (9) and is activated when the latch (15) reaches an intermediate position between the no-flanch position and the full latte position. let

(B) is a ball that engages with the latch (15) to keep the door (1) fully closed when the latch (5) rotates to the full latching position shown in Figure 11.
) is connected to the open lever through the open lever, and by rotating the ball in the direction of the arrow by hand or by operating the automatic VT4 door, the latch (
The connection with the first time is released, and the door (1) is opened with "J'j+"
Set it to t4.

When the door (11) is closed to the half-launch position by an appropriate means while standing in the apparatus of the present invention having the above-described structure, the latch (11) in contact with the striker (18) is released as shown in FIGS. 9 and 10. +5) rotates slightly clockwise together with cam 04), and the first circle→rt< surface (14a) of cam 0 closes the first micro switch.

Then, the motor (3) is energized, and together with the output shaft (5) of the reduction gear Mt4+, the crank arm (
6) is rotated, and the bell crank (10) is connected to the crank arm (6) via the first connecting rod (7).
Since the lever rotates clockwise in FIG. 1 and pulls the second connecting rod 111), the lever (the lever rotates counterclockwise by itself, but its protruding piece (13a) Department (14C
), the latch (2) rotates together with the cam (l→) to reach the fully latched position.

During this time, the second arc surface (14b) of the cam 0 comes into contact with the second micro switch (21) and closes it.
As shown in Fig. 11, the latte ■) rotates to the full latte position, the ball (22) engages, the latch μs) is held at the fully latched position, and the door (1) is fully closed. becomes.

At this time, the crank arm (6), which has reached the front dead center, further rotates and pushes up the second connecting rod σ1), and when it reaches the rear dead center, the electric power is switched by the operation of the second micro switch (21). Due to the action of a circuit (not shown), the motor (3) stops, the crank arm (6) stops at the rear dead center, and the lever (13) returns to the position shown in FIG. 9.

To open the door (]), rotate the open lever cape) manually or automatically, the engagement between the pole (22) and the latte 05) will be released, and the latte 05) in the fully latched position will be released. , the clockwise rotation becomes free, and the striker 08) is released from the latch (15Fλ), and the door (1)
You can open it.

At this time, the cam (14) also rotates together with the latch (15), but since the lever (1B) has already returned to the position shown in Figure 9, the clockwise rotation of the cam (+49) is prevented. First, the door (1) can be closed without any problem.

As is clear from the above, according to the present invention, ('t 3'
Due to the reaction force of the weather strip and locking resistance, closing the door from the half-latch position to the full-latch position, which required a large amount of force, is done by rounding the free end of the door, so it can be fully closed with light force. can, therefore,
There is no need to forcefully close the door as in the past, and there is no need to use an independent motor 1' in an automatic door opening/closing device.

Moreover, in this device, since torsional stress is applied to the second connecting rod l;Ill that is connected to the bell crank (10) and the lever <184ft, the large biasing force of the stroke causes the diameter of both the upper and lower pivot joints to be reduced. Even if there is play in the force and direction of the axial force, the door lock (8) will not rattle when activated.

In addition, the structure of the pivoting part is simple and does not take up space, so it does not get in the way even in a crowded and narrow door lock (8).Furthermore, the stroke of the biasing force is large, so the door lock (8) is the operating center. Even if the play in the reservoir changes, there is little change in the biasing force, so there is little change in abrasion resistance, and the door lock (
8) operates smoothly.

7. The material and shape of the second connecting rod α force are not limited to those in the above embodiments. Materials that are easy to manufacture can be used for the mounting portion (11a), and the connecting rod (ob) for,
Various materials with high elasticity can also be used in the form of a plate.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway front view of an automobile door equipped with the device of the present invention, FIG. 2 is a front view of the second connecting rod when no load is applied, FIG. 3 is a right side view, and FIG. , a front view of the second connecting lock when installed, FIG. 5 is a right side view, FIG. 6 is an enlarged side view of the door lock shown in FIG. 1, viewed from the left, and FIG. Figure 8 is an exploded perspective view of the latch shaft; Figures 9 to 11 show the operation of the lever, cam, and latch; Figure 9 shows the opening of the latch; A diagram showing the door state, FIG. 10 is a diagram showing the half-latched state, and FIG. 11 is a diagram showing the door state.
It is a figure which shows a full latch state. (1) Door (3) Motor (4) Reducer (6) Crank arm (7) First connecting rond (8) Door lock (9) Board (1
0) Bell crank (11) Second connecting rod (lla
) I412 attached part (llb) Connection rod (121 latch shaft - 1a + lever 04.) Cam (4 latches (16) Bin (17 in 1 hard frame)
(18) Strike force Figure 2 Figure 4 Figure 3 Figure 5 Figure 6 Figure 7

Claims (1)

[Claims] There is a latch Il on the door lock installed inside the free end of the door! l
A striker fixed to the vehicle body and a removable latch are fixed to the latch shaft, and a lever is pivotally mounted to the latch shaft, and the lever and the door lock board are pivotally mounted. The other end of the lever, which is connected to the speed reducer of the motor, is connected to the other end of the lever by a second connecting rod made of an elastic material and to which torsional stress is applied, and the motor moves the latte in half through the lever. An automatic door closing device for automobiles, etc. that rotates from a two-way position to a fully latched position.