JPS5883777A - Automatic closing apparatus of door 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 The present invention relates to a device for automatically and reliably closing the door of an automobile or other vehicle.

The conventional automatic Sogetsu door closing operation takes place immediately before fully closing (hereinafter referred to as the margin) due to weather stripping reaction force, locking 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 closed too forcefully, a shock is applied to the door and the vehicle body, which not only causes an impact noise, but also causes discomfort to the people in the vehicle.

In addition, automatic door opening/closing devices that automatically open and close automobile doors using a drive means such as a motor are configured to open and close the door near the hinge of the door, so the door cannot be fully closed. A considerable amount of force is required just before this happens, and a large amount of force is applied to the door and center pillar on the vehicle body side, which may cause the side door and center pillar to deform.

In view of the above-mentioned points, the present invention provides a system in which the side door is closed most due to weather strip reaction force, lock resistance, etc.

The door can be closed easily and reliably between the half-latch position and the full-latch position from the free end side of the door, which has a door lock and a tack, and has a simple structure and can be manually operated. An object of the present invention is to provide an automatic door closing device for automobiles, etc., which can smoothly open and close the door.

In order to achieve this object, the present invention provides a rotary lever on the axis of the latch that is pivotally mounted in the door lock body provided on the door side, and connects the rotary lever to a speed reducer driven by a motor. In conjunction, the drive force of the motor is used to move the latch from the half-latch position, where the latch barely engages with the striker fixed to the vehicle body, to the door number, through the speed reducer and the rotary lever. It is designed to be forcibly rotated to the fully latched position, which holds it in the fully closed position.

The present invention will be described below based on embodiments shown in the accompanying drawings.

In FIG. 1, (1) is a rear door of an automobile, and its front end is pivotally connected to the vehicle body (the path shown) with a pair of upper and lower door hinges (2).

As shown in FIGS. 1 to 7, a door log (3) is provided at the free end of the door (1). This door lock (5) is operated by a latch (7) pivotably mounted within the door lock body (6) disengaging from and engaging with a striker (5) fixed to the side rear frame (4) of the vehicle body. , the door can be opened and closed.

(8) is a motor fixedly installed inside the door (1), and its rotating shaft (8a) is the input shaft (10) of the reducer with switch device (9) fixedly installed inside the door (1). is connected to.

As shown in FIGS. 1 and 8, the reducer (9) includes a worm (11) fixed to the middle of the input shaft (10), and a worm wheel (12) that meshes with the worm (11).
), an output shaft (13) fixed to the center of the worm wheel (12) and protruding to the -side of the reducer (9);
A switch device (14) is provided.

The switch device (14) includes a disk-shaped substrate (15) fixed to the worm wheel (12), and this substrate (15).
A substantially disc-shaped conductor plate (16a) is fixed to the center of the outer surface of the
) and a fan-shaped conductor plate (
17) and two brushes (18) and (19), in a certain rotation period of the board (15), both brushes (1B) (19) contact the conductive plate (17) at the same time,
In other rotation periods, only the brush (18) closer to the output shaft (13) contacts the conductor plate (16). These electrical connection relationships will be described later.

The base of a crank arm (20) is fixed to the protruding end of the output shaft (13) that protrudes laterally from the reducer (9), and the connecting rod (2) is attached to the free end of the crank arm (20).
1) One end is pivoted. In addition, the crank arm (
20) and a conductor plate (1 (5)) fixed to the substrate (15).
The positional relationship with (17) is that when the conductor plate (17) contacts both the brushes (18) and (19), the crank arm (
20) is located at the top dead center as shown in FIG.

The other end of the connecting rod (21) is pivotally connected to the lower end of a bell crank (23) that is pivotally connected to the base plate (22) of the door lock body (6).

The lower end of a connecting rod (24) extending in the vertical direction is pivotally attached to the free end of the rearward-facing arm of the bell crank (23).

The upper end of the connecting rod (24) is connected to the free end of a rotary lever (26) whose base is rotatably connected to a shaft (25) which is fitted with the latch (7) so as not to be relatively rotatable. , are pivotally mounted with a shaft (27). As clearly shown in FIGS. 2 and 4 to 7, a protruding piece (26a) facing rearward is formed on the outer periphery of the base of the pivot lever (26).

(2B) is a cam that is fitted to the shaft (25) so as not to be relatively rotatable, and is configured to rotate integrally with the latch (7) via the shaft (25). At the periphery of this cam (28),
an arc-shaped first cam surface (28a) that protrudes slightly outward from the other peripheral edges; and a first degree cam surface (28a) that is continuous with the first cam surface (28a) and protrudes further outward from the first cam surface (28a). An arc-shaped second cam surface (28b) and a step portion (28C) continuous to the second cam surface'(28t>) are formed.

The stepped portion (28C) comes into contact with the projection (26a) of the same lever (26) only when the rotary lever (26) rotates in the counterclockwise direction in FIGS. 2 and 6, and rotates. dynamic lever (2
With the rotation of 6), the launcher (7) and the striker (5
) to the half-latched position shown in FIG. 6, which barely engages the door (1), to the half-latched position shown in FIG. 6, which fully engages the striker (5) and engages the pole (54) to hold the door (1) in the fully closed position. It is designed so that it can be rotated to the full latch position shown in the figure.

The pole (34) has an open lever (65) fixed on its shaft (34a), which is used to open an operating handle (not shown) disposed inside and outside the vehicle.
By rotating in the direction of the arrow shown in Fig. 7 in conjunction with the opening operation of the latch (not shown), the latch (7) is released and the door (1) can be opened. be.

The first cam surface (28a) is configured such that the door (1) closes to the half-latched position, the striker (5) barely engages the latch (7), and the latch (7) accordingly opens as shown in the 5th position. When the door is rotated slightly counterclockwise from its original state, it comes into contact with the limit switch (29) fixed to the board (22) of the door lock body (6), and the limit switch (29)
) are arranged in such a way as to activate the

The second cam surface (28b) is configured so that when the latch (7) reaches a suitable intermediate position between the half-latched position and the full-latched position, the limit switch (3) fixed to the substrate (22)
0) and actuates the limit switch (30).

Thus, the latch ( A latch rotation means (A) is formed for forcibly rotating the latch 7) from the half-latched position to the full-latched position.

In this latch rotation means (A), by rotating the rotating shaft (8a) of the motor (8) in an appropriate direction (either the forward or reverse direction), the crank arm is (20) is rotated once, and in the first half cycle, the pivot lever (26) is rotated from the position shown in Figure 6 to the position shown in Figure 7, and the latch (7) in the half-latched position is rotated. The door (1) can be fully closed by forcibly rotating the crank arm (20) to the full latch position.6 When the crank arm (20) rotates in the second half of the It rotates back clockwise from the position shown in the figure and returns to the position shown in FIG. During the return rotation of the pivot lever (26), the cam (28) and the latch (7) are not driven, and the latch (7) maintains the fully latched state in which it is engaged with the pawl (34).

FIG. 9 shows an example of an electrical circuit for operating the apparatus of the embodiment described above.

(31) and (52) are main switches installed, for example, in the driver's seat of a car, and are interlocked with each other to open the door.
) and the closed door side (C1ose).

In addition, the main switches (51) (52) are on the open door side (Open
) A circuit for operating an automatic door opening device for automatically opening the door (1) is connected to the contact.
Since this is not directly related to the present invention, illustration is omitted.

(36) connects the main switch (31) (32) to the closing door side (
This is a switch that is linked and closed only when the switch is switched to C1ose).

Symbols (8), (14), (29), (3o), etc. electrically represent the motor (8), switch devices (14-input limit switches (29), (30), etc.) in the above-mentioned embodiment. It is.

Next, the operation of the apparatus of the present invention will be explained based on FIG.

When the main switch (31) (32) is switched to the door closing side (C1ose) and the door (1) is closed to the half latch position by manual operation or by an automatic door opening/closing device other than the present invention, The limit switch (29) operates and closes,
■Power supply - Main switch (Ro2) - Limit switch (29
) ~ Switch (33) C main switch (31) (32)
The closed door side (C1ose) is closed at the same time as the switch. ) - Motor (8) - Limit switch (30) (At this time, it is switched to the main switch (31) side.)
- Main switch (31) - e The motor (8) is energized by the closed circuit of the power source, and its rotating shaft (8a) starts rotating.

Simultaneously with the operation of the motor (8), the crank arm (20)
begins to rotate and begins to rotate the latch (7) toward the fully latched position.

At the same time, the board (1) in the switch device (14)
5) also begins to rotate, the brush (18) comes into contact with the conductor plate (16), and the brush (19) separates from the conductor plate (17) and becomes non-contact.

When the door (1) reaches the appropriate intermediate position between the half-latched position and the fully closed position, the IJ Mitsutwitch (30
) is activated and switched to the switch device (14) side.

As a result, the circuit that had previously reached the e power supply through the limit switch (3o) and the main switch (31) now
Limit switch (3o) - Brush (18) - Conductor plate (
16) - Main switch (31) - e Switched to a different circuit from the power supply. However, the mechanical operation of the latch rotation means (A) continues, gradually tightening the latch (7) toward the fully latched position.

After the latch (7) reaches the full latch position, when the crank arm (20) and the board (15) complete the latter half cycle and return to their original positions, the brush (1B) moves to the conductor board ( 16) and the circuit to the e power source is opened. Then, the brushes (18) and (19) immediately touch the conductor plate (17).
Simultaneously, the motor (4
) comes to a sudden stop.

The feature of this circuit is that the crank arm (20) is made to rotate exactly one rotation per door closing command, and for that purpose, the crank arm (2o) is suddenly stopped at a fixed position. It is in.

To open the door (1), press the main switch (31), (32)
To release the engagement between the pole (34) and the latch (7), switch the door to the open side (Open) or operate the operating handle inside or outside the vehicle interior to operate the open lever (35). As a result, the latch (7) can be freely rotated clockwise from the position shown in FIG. 7, and the striker (5) can be disengaged from the latch (7) to open the door (1). At this time, as the latch (7) rotates, the cam (
28) rotates in the same way, but the rotation lever (26)
Since the cam (28) always returns to the position shown in the figure, the clockwise rotation of the cam (28) is not blocked and rotates smoothly, without affecting the opening operation of the door (1). It never goes away.

As is clear from the above, according to the present invention, the range from the half-latch position to the full-latch position, which was most difficult to close due to weather strip reaction force, lock resistance, etc., can be fixed on the door lock side farthest from the door hinge. Therefore, the door can be closed easily and reliably, which is significant.

Therefore, if the device of the present invention is used, there is no need to forcefully close the door as in the conventional case, and there is no need to use a powerful motor in an automatic door opening/closing device.

In addition, as in the above-mentioned embodiment, one revolution of the crank arm causes the rotary lever to reciprocate once, the latch is rotated from the half latch position to the full latch position in one half cycle, and the rotary lever is rotated in the other half cycle. By making the return rotation, it is possible to respond immediately to the next door closing command, there is no need for a separate return operation, and the door can be operated smoothly without affecting the door opening operation. This brings about the advantage.

However, the present invention is not limited to the above-described embodiments, and for example, the above-described rotating lever (26) may be fixed to the shaft (25) so as to rotate integrally with the latch (7). ,
A shaft (27) that connects the connecting rod (24) and the rotating lever (26) is a shaft (25) that is bored in the rotating lever (26).
) may be made to be able to slide along an arcuate long hole centered at .

In this way, during the latter half cycle of the crank arm (20), the shaft (27) slides along the elongated hole, and there is play between the connecting rod (24) and the rotating lever (26). This play makes it difficult for the crank arm (20) to return to its normal position.

[Brief explanation of drawings]

1 is a partially cutaway front view showing an example of an automobile door equipped with the device of the present invention; FIG. 2 is an enlarged side view of the door lock shown in FIG. 1 as viewed from the left side of FIG. 1; 3 is a front view of FIG. 2 viewed from the right side, and FIG. 4 is an exploded perspective view of the shaft of the latch shown in FIG. These diagrams are for explaining the operation with the cam. Fig. 5 shows the door open state, Fig. 6 shows the half-latched state, Fig. 7 shows the fully latched state, and Fig. 8 shows the door open state. FIG. 9 is an enlarged longitudinal sectional front view of the decelerator shown in FIG. 1, and FIG. 9 is a circuit diagram showing an example of the electrical system of the device of the present invention. (A) Latch rotation means (1) Door (3) Door lock (5) Striker (6) Door lock body (7) Latch (8
) Motor (9) Reducer (10) Switch device (20) Crank arm (26) Rotating lever (28) Cam

Claims (3)

[Claims] (1) A door lock with a latch pivotably attached to a striker fixed to the vehicle body and a decelerator driven by a motor are disposed on the door side, and the door lock has a latch and a relative rotation. A rotary lever is provided on the shaft of the latch that is immovably fixed, and the rotary lever and the speed reducer are linked, so that the rotary lever is rotated in a desired direction by the drive of the motor; The latch is forcibly rotated from a half-latch position where it barely engages the striker to a full-latch position where it fully engages the striker and holds the door in a fully closed position. Automatic closing device for doors of automobiles, etc. (2) When the rotating lever rotates in one direction, the rotating lever engages with the latch axis to move the latch from the half latch position to the full latch position. Claims characterized in that the latch shafts are linked to each other in such a manner that the latch shafts do not follow the rotation lever when the rotation lever rotates in the other direction. The automatic door closing device for automobiles, etc., described in paragraph (1). (3) Claim (1) or (2) characterized in that the decelerator consists of a worm and a worm wheel.
) The automatic door closing device for automobiles, etc. described in paragraph 2.).