JPS58106074A - Door lock for automobile door - 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 locking pawl, a locking hook with a load spring and an operating device are provided, in which case a closing bin mounted on the door frame is introduced into the rotating pawl when the motor vehicle door is closed. the locking hook applies a frictional force derived from the elastically deforming door seal to the closing stop portion of the rotating mechanism when the rotating mechanism moves to the closed position and the automobile door is closed. Regarding door locks for automobile doors.

The casing may also be transformed into a mere support plate.

In the following, the expression casing will be used for terminological reasons. In practice, the closing stop located on the rotating pawl is also called a notch, □In particular, it is also a safety notch or a spare notch.
, when realizing the notch, it is called the main notch.

Experience has shown that the rotary pawl and locking hook 1 in a door lock, together with the casing, constitute mechanically highly loaded parts, and for safety reasons, these parts are Absorb the necessary stress. Door locks such as those mentioned at the outset are particularly safe and reliable due to their construction and are excellent. The operating device consists of a large number of mechanical levers and elements,
And it is designed to be operated manually. This operating device is
It has a suitable operating handle on the inside of the motor vehicle door on the one hand and on the outside of the motor vehicle door on the other hand. In this case, the term "operation" generally refers only to the opening operation.

This is because closure is achieved by closing the door. During opening, it is often necessary to overcome the frictional forces that the locking hook exerts on the closing stop on the rotating pawl in a closed motor vehicle door. In practice, the closure stop is also referred to as the main notch. In most cases there is a reserve or safety notch in front of this.

It is known that in other types of door locks the operating device is equipped with a motor, so that said manual operation is no longer necessary;
Just operate the switch or push button for the motor. In this embodiment, in contrast to the first embodiment, the rotating pawl and the locking hook are no longer present. On the contrary, the closing bin is accommodated between scissor levers, which can be unfolded by an adjustment element driven by a motor when opening the door lock. Therefore, in this embodiment, excellent parts,
The rotating pawl and locking hook are omitted. The loads that are to be absorbed in a closed motor vehicle door for safety reasons cannot be absorbed as such with this known embodiment. Particularly in the event of an accident, it may open uncontrollably. On the other hand, with door locks such as those mentioned at the outset, motor operation cannot directly be applied instead of manual operation. This is because said frictional force, which the locking hook exerts on the closing stop of the rotating pawl, requires a motor with a disturbingly high power output and a disturbingly high current consumption.

SUMMARY OF THE INVENTION The object of the invention is to provide a door lock of the type mentioned at the outset with a motor operating device that requires a motor with a small output and current consumption.

In order to solve this problem, the present invention shows the following. That is, the operating device has an operating slide with two control stops, a toggle lever device with two lever pieces connected at a dead center joint and a dead center excess spring, and a motor with a crank drive. , an operating sliding body is connected to the crank drive unit, and a toggle lever device is
It is articulated on the one hand with the rotary pawl and on the other hand with the housing, and in the closed position of the rotary pawl is held in a position beyond the dead center pushed towards the crank drive, with the crank drive side control being When the crank drive unit rotates from the non-operating position, the toggle lever device first contacts the control stop ((beyond the dead center position)) at the dead center joint. The locking hook can be retracted into the opposite over-dead center position and the locking hook can be swung into the free position by means of a further control stop.

The present invention is based on the following knowledge. That is to say, in door locks as mentioned at the outset, in the closed position the locking hook is moved from the corresponding locking stop 1 of the rotary pawl (with a relatively small output and current consumption, only if the applied frictional forces are eliminated). It can be operated by a small motor.The present invention uses a toggle lever device to eliminate this frictional force, and also takes advantage of the lever law of the toggle lever device, so that it has a small power output and current consumption. This frictional force can also be removed using a motor.

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

The door lock shown in FIGS. 1-5 is for use on a motor vehicle door. The basic configuration includes casing 1
, a rotary pawl 2 configured as a fork pawl, a locking hook 3 with a load spring 4 and an actuating device 5. The device is such that, first of all, when a motor vehicle door is closed, a closing bin 6 mounted on a door frame (not shown) can be introduced into the rotary pawl 2, and the rotary pawl 2 is moved into the closed position. The locking hook 3 absorbs the frictional force P derived from the door gasket that elastically deforms when the automobile door is closed.
is applied to the closing stop portion 7 of the rotating pawl 2. In this regard, reference is made to FIG. 1, where the force acting on the door lock from the elastically deformed door seal is indicated by arrow P on the fixed side. The closure stop 7 forms a so-called main notch. In front of it is a reserve notch 8 or a safety notch. The operating device 5 is an operating device using a motor. The basic configuration of the operating device includes: an operating slide 9 with two control stops [0, II], a toggle lever device with two lever pieces 14, 15 connected at a dead center joint 13 and a dead center overshoot spring 16; 12 and a motor 17 with a crank drive 18. An operation sliding body 9 is connected to the crank drive section 18 . The toggle lever device 12 is articulated on the one hand with the rotary pawl 2 and on the other hand with the casing 1.

This toggle lever device is held in the over-dead center position A pushed towards the crank drive 18 in the closed position of the rotary pawl 2, as shown in FIG. At this time, the crank drive section side control upper part 10 is 1
It can be seen that the point indicated by 9 is in contact with the dead center joint 13. Crank drive 1 from the inoperative position shown in FIG.
8 rotates, the toggle lever device 12 is first moved by the control stop IO at the dead center joint 13 beyond the dead center position 13 shown in FIG. C, the locking hook 3 is then swung into the free position by means of the control stop 11 shown at the bottom in the figure. See FIG. 3 for this. Figure 3 shows the open position. When the motor vehicle door is then closed and the closing pin 6 enters the rotary pawl 2, the device obviously returns to the position shown in FIG. 1, with no movement of the crank drive 18. The end of the operating slide 9 remote from the crank drive section 8 is guided in an elongated hole 2o matched to the crank drive amplitude. A transmission 21 is arranged between the motor 17 and the crank drive section 18. In particular, as is clear from FIG.
It can be swung to the contact position via. In this embodiment, the motor 17 is designed as a unidirectionally rotating motor, which has a control circuit 22 that includes an external actuator 23 and an internal circuit breaker 24 . The internal circuit breaker 24 can be operated by the crank drive 18 after a rotation of 36°. Comparative consideration of FIGS. 1 to 3 reveals the cooperative action of the elements. Toggle lever device 120 and two lever pieces 14 in the closed position shown in FIG.
．． 15 is 18o.

It forms an obtuse angle, and when the lock is opened by the motor 17,
Toggle lever device 120 both lever pieces 14. +5 is designed to move through a 180° straight line state, that is, through dead center position B. Thereby, the rotary pawl 2 first moves into the closed position, whereby the stop 7 of the rotary pawl 2 and the stop 25 of the locking hook 3 move away from each other, so that the rotary pawl 2
The frictional force of the locking hook 3 at the stop 7 is eliminated. The control stop portion 10.11 of the operating slide body 90 is located at the dead center position B.
2, the locking hook 3 moves in the opening direction before the rotary pawl 2 moves further in the opening direction (FIG. 2).

The above-described dead center spring 16 is arranged between the pin 26 on the lever piece 14 and the pin 20 on the casing l, so that the toggle lever device 1 can be moved at the latest.
In the dead center position B of 2, in the embodiment according to FIG. 1, a clockwise rotational torque is applied to the lever piece 14, whereas in the open position of the door lock (FIG. 3), a counterclockwise rotational torque is applied. After a brief operation of the external actuator 23 (for example at the outer door knob), the internal circuit breaker 24 is first closed. This is because voltage is applied to the motor 17 and rotational movement of the motor begins. Crank drive part 1
After one revolution of 8, the internal circuit breaker 24 is opened, thereby interrupting the voltage supply to the motor 17. The embodiment of the door lock according to the invention shown in FIGS. 4 and 5 is for the time being the same as described above and operates in a similar manner.

The same reference numerals are given in that respect. However, the device is as follows. That is, when the actuating slide 9 moves towards the crank drive 18, the rotary pawl 2 can be brought from the open position to the closed position via the toggle lever device 12, and the motor vehicle door is then closed by the motor. The entrainment takes place via a entrainment stop 28, which in this embodiment adjoins the dead center joint from below. For this purpose, the control circuit 22 has a further internal switch 29, which is opened by the rotary pawl 2 after starting the opening movement by the motor, but is closed by the pawl 2 after starting the mechanical closing movement. be able to. In this embodiment, therefore, the rotary pawl 2 has an adjusting hook 30 in the area of the articulation in the lever piece 15, which in the closed position of the rotary pawl 2 closes the switch 29 and in the open position this switch 29 closes. open. FIG. 4 first shows the closed position. It can be seen here that another internal switch 29 is in the closed position. Figure 5 shows
The position between the opening of the locking hook 3 and the crossing of the so-called safety notch 8 is shown. Another internal switch 29 is open in this position.

The door lock is therefore opened further from this position. If this door lock is mechanically closed further, this additional internal switch closes, so that the closing movement is subsequently carried out by the motor. For this purpose, in addition to the control stop 11 for the locking hook 3, which is also shown in the embodiments of FIGS. 1 to 3, the operating slide 9 is provided with a catch stop 28, which Now both control stops 10.11
In between, a free stroke F is possible for the dead center joint 13 and thus for the toggle lever device 12, but otherwise a rocking closing movement is ensured as described above. Here too, the motor 17 exerts a very large closing force on the rotary pawl 2 due to the leverage of the toggle lever device 12. A further switch 29 provides a time-controlled progression.

This switch is closed in the closed position of the door lock. After the rotating claw 2 starts rotating in the opening direction, switch 2
9 is set at the earliest after the locking surface of the closing stop portion 7 of the rotating pawl 2 passes through the stop portion 25 of the locking hook 3, and therefore after the locking hook 3 is no longer able to prevent the rotational movement of the rotation 9th 2. open.

The motor 17 is stopped and the door can now be opened completely by hand. When the door is mechanically closed, switch 29
closes the control circuit 22 of the motor 17, thereby starting the aforementioned closing process.

The basic configuration of the embodiment shown in FIGS. 6 to 10 is as follows.
It is the same as that in FIGS. In that respect, the same reference numerals are given, and in that respect, the above explanation of the operation is valid, so please refer to the above explanation in order to avoid repetition. However, the rotary pawl 2 no longer has the closing stop 7 of the embodiment of FIGS. 1 to 5.

The rotary pawl has only a safety notch 8. The function of the closing stop is carried out by the toggle lever device 12, which is therefore associated with a special catch 7S. The layout is as follows. That is, the toggle lever device 12 is held at a position A beyond the dead center where it is pushed toward the crank drive section 18 by being pressed by the locking portion 7S disposed on the crank drive section side of the casing l, and furthermore, the toggle lever device 12 is The lever device 12 can be swung away from the rotary pawl 2 when or after it is pushed into the opposite dead center position C, which rotary pawl 2 still only engages the safety notch 8 for the locking hook 3. The rotary pawl 2 is fixed in the closed position via the toggle lever device 12 and the locking portion 7s by using the force P taken out from the deformed door seal and acting on the rotary pawl 2.

[Brief explanation of the drawing]

1 shows a door lock according to the invention with a motor operating device for opening movement in the closed position; FIG. 2 shows a part of the lock of FIG. 1 in another operating position; FIG. 1 is a view of the one in FIG. 1 in the open position, FIG. 4 shows a variant of the one in FIGS. 1, 2 and 3 in which the closing movement is also motorized, and FIG. 5 shows a different operating position. 4, FIG. 6 is a view corresponding to FIG. 1 showing another embodiment of the door lock according to the invention, and FIG. 7 is a view of FIG. 6 in another operating position. Figure 8 is a diagram showing a part of the
6 in the open position, FIG. 9 a variant of the one in FIGS. 6, 7 and 8 in which the closing movement is also motorized, and FIG. 10 in another operating position. FIG. 9 is a diagram of that of FIG. 9;

Claims (1)

[Claims] +11 A housing, a rotating pawl, in particular a fork pawl, a locking hook with a load spring and an actuating device are provided, in which case when the motor vehicle door is closed, the closing pin mounted on the door frame is activated. The locking hook can be introduced into the rotary pawl, and when the rotary pawl moves to the closed position and the automobile door is closed, the locking hook applies the frictional force derived from the elastically deforming door seal to the closing stop portion of the rotary pawl. In a door lock for an automobile door, an operating device (5) is connected to an operating slide body (9) having two control stops (10, 11) and a dead center joint (13) at a VC. It has a toggle lever device (12) with two lever pieces (14, 15) and a dead center spring (16), and a motor (17) with a crank drive (18). An operating slide (9) is connected, and a toggle lever device (12) is K-jointed on the one hand to the rotary pawl (2) and to the casing (1) on the other hand, and on the other hand to the rotary pawl (2). In the closed position, it is held in the dead center excess position (A) pushed toward the crank drive part (18), and at this time, the crank drive part side control stop part (10) comes into contact with the dead center joint (13). In addition, the crank drive unit 08) can be rotated from the non-operating position to the position (C) beyond the dead center opposite to the first mentioned position, and the locking hook (3) is A door lock for a motor vehicle door, characterized in that it can be swung into a free position by means of a control stop (0). (2) The end of the operating sliding body (9) remote from the crank drive unit (18) has a long hole (
20) A door lock according to claim 1, which is guided within the door lock. (3) A transmission (21) is disposed between the motor (17) and the crank drive section (18).
The door lock described in paragraph 2 or paragraph 2. (4) The rotary pawl (2) that has come off the locking hook (3) is moved to the toggle lever device (12) by the dead center excess spring (16).
) can be swung into the contact position via the
A door lock according to any one of paragraphs 3 to 3. (5) The motor (17) is a motor (17) that rotates in one direction.
7), and this motor is connected to a control circuit (22) including an operation input device (23) and an internal breaker (24).
), the internal circuit breaker (24) being actuatable by or dependent on the crank drive (18) after a rotation of 360°. A door lock according to one of paragraphs 1 to 4. (6) A further entrainment stop (28) juxtaposed to the control stop (n) for the locking hook (3) allows the toggle lever device (12
) moves the operating sliding body (9) toward the crank drive unit (18) at the dead center joint (13), the rotating pawl (2) moves from the open position to the closed position across the free running section (F).
), in which case the motor vehicle door can be closed by means of a motor, and the control circuit (22) has a separate internal switch (29) which, after the opening movement has been started by the motor, causes the rotary pawl to close. A door lock according to claim 5, which is opened by (2) and closed after mechanically initiating the closing movement. (7) A position beyond the dead center where the toggle lever (12) is pushed toward the crank drive unit (18) by being pressed against the locking part (7s) arranged on the casing (1) on the crank drive unit side ( A), and furthermore, the toggle lever device (I2) can be swung to a position away from the pawl (2) by rotation 1 when or after it is pushed into the opposite dead center excess position (C). , this rotary pawl (2) further has only a safety notch (8) for the IF hook (3), and the force (P) that is removed from the deformed door seal and acts on the rotary pawl (2) is used. and the rotary pawl (2) in the closed position via the toggle lever device (12) and the locking part (7s).
Door lock according to one of claims 1 to 6, in which the locking is performed.