CN105026668A - Lock for motor vehicle opening leaf - Google Patents

Abstract

The invention relates to a lock for a motor vehicle opening leaf, having a latch (5) that engages with a pawl (6), a central locking lever (1), an external opening lever (4) connected to an external handle and an internal locking lever (9) connected to an internal locking control and to said central locking lever (1), a dummy pawl (3) being secured to said pawl (6), said lock providing a ''Cancel'' function by means of an arrangement for converting a closing movement of said dummy pawl (3) into an unlocking movement of said central locking lever (1). According to the invention, said arrangement has an element that is integrated into said central locking lever (1) and is disposed on the path of said dummy pawl (3) while the opening leaf is being closed, said central locking lever (1) moving from the locked position to the unlocked positioned by sliding in one direction.

Description

car door lock

The invention is a car door lock.

In order to prevent the driver from leaving the vehicle after activating the door lock and leaving his key in the vehicle, there is a function on the driver or passenger side to prevent the key from being locked in the vehicle, which is usually located on the dashboard in front of the vehicle.

Traditionally, this function has been different in Europe and Asia.

Generally speaking, in Europe, car locks do not have mechanical locking and unlocking functions, so they can only be locked electrically. This type of lock is generally referred to as a "self-locking" type.

These locks usually have a manual control called an "override" that locks the door when an internal handle switch is actuated. When the door is closed from the outside, this type of lock cannot be locked manually so the door remains unlocked and the key is not locked inside the car.

Some of these locks sometimes also have an emergency lock function, which is actuated by the key's mechanical interface and can only be used when the door is open to ensure the safety of the vehicle in the event of an electrical failure. This function thus makes it possible to lock the doors without power. This type of door is locked when it is opened, because it is locked before and after the door is closed. But at this time the car key is in the owner's hand, so it will not be locked.

And when the door is closed, it is the same situation to lock it with the key. This is a typical case of the driver's side door. The doors are locked with a key.

In Europe, some vehicle models have a mechanical locking panel that can be used without a key. In this case, at least one lock in the vehicle is equipped with a mechanical function that prevents the lock from being unlocked in the open state. This feature is commonly referred to as "Door Lockout".

In a vehicle equipped with the "self-locking" function, if the vehicle door is closed, we can of course lock the vehicle through the electronic lock, or through the dashboard operation, or through the remote control key. In the first case, we were inside the car, so the keys were not trapped. In the second case, the key was with us, so it wasn't trapped in the car either.

If the vehicle has one or more doors open, the on-board system computer usually prohibits the command to lock that door or all doors to eliminate the risk of leaving the vehicle and closing the doors and forgetting the key inside the vehicle. This is a circuit-controlled "Door not unlocked" function.

Another workaround that is often encountered is to allow the lock to brake, and brake it as soon as it is unlocked. This is the "unlock the door" function controlled by the circuit.

In general, in Asia, it is ideal that the doors can be locked during interior opening or can be locked immediately once opened. Therefore, on some locks, when the door is closed, the mechanical function of canceling the lock is considered and implemented. This first function is generally called "Cancel".

The locking action can be braked while the doors are open, and a second comfort function has also been proposed, which allows an open door to remain locked after it has been closed. The second function is often referred to as a "keyless lock". It can automatically lock the vehicle without the need to insert or brake the car key. It is usually mounted on the front door and is activated once the door is closed while the outside handle is held on the brake.

This lock is described in patent GB2 360 325.

The "cancellation" function is through the unlocking action of the central locking lever, and a rotatable transmission rod transmits the closing action to a part of the lock pawl, usually called a false pawl. To do this, the dummy pawl has a flange that pushes the transfer lever to turn clockwise, a tenon of the transfer lever moves into a slot in the central locking lever to rotate the tenon counterclockwise , from the locked state to the unlocked state.

The "keyless lock" function is achieved by a disengaged transmission lever that holds the central locking lever in its locked position while the outer opening lever connected to the outer handle. The flange of the pseudo pawl rotates the transfer lever arm clockwise, the tenon of the lever is thus free to slide in the groove of the central locking lever.

The drive rod thus acts as a motion reverser and requires an additional shaft and interface elements, ie flange and tenon, as well as central locking lever and dummy pawl. It must be made of steel to withstand and transmit the energy of closing the door.

The object of the present invention is to provide a door lock with "cancellation" function which is simpler in mechanism, lighter in weight and cheaper in price, without the need for a transmission lever and therefore with fewer parts.

To achieve this, the present invention proposes a door lock comprising a bolt with a pawl, a central locking lever, an outer opening lever connected to the outer handle, an inner locking lever connected to the inner locking control, and the central locking lever , a false pawl attached to the pawl, a lock with a "cancellation" function, the closing movement of which conveys the unlocking of the central locking lever through the closing movement of said false pawl, characterized in that said device contains said central locking lever The built-in element is located on the false pawl track when the door is closed, and the central locking lever slides from a locked position to an unlocked position by moving in one direction.

By virtue of the invention, the "cancellation" function is realized by the direct cooperative transmission of the central locking lever and the false pawl, in the sense that all reverse displacement devices, enlargement devices and multi-contact devices are eliminated.

According to a first embodiment, said transmission means are springs.

Most preferably, the spring is a torsion spring, with one section of the spring element open and one section bent.

Advantageously, the central axis of the torsion spring is perpendicular to the sliding direction of the central locking lever.

In order to ensure the "keyless lock" function, the central locking lever and the flange of the outer opening lever have a common contact, and the action of the outer opening lever makes the flange block the contact and make the The central locking lever is stuck in the locked position.

According to a second embodiment, said transfer means is a tenon associated with said central locking lever.

Optimally, the tenon is perpendicular to the sliding direction of the central locking lever.

Optimally, the dummy pawl is connected to the pawl by a common axis of rotation.

Optimally, the sliding direction of said central locking lever is perpendicular to said common axis of rotation of said pawl and said dummy pawl.

Optimally, the lock comprises a bistable spring whose stable rest position corresponds to a locked position and an unlocked position, said bistable spring being advantageously connected to said inner locking lever.

The invention is described in more detail below by way of illustrations which represent only preferred embodiments of the invention.

Figures 1 to 6 are partial perspective views of a lock operating in "cancellation" mode established according to a first embodiment of the present invention.

7 to 12 are partial perspective views of a lock constructed according to a first embodiment of the present invention operating in a "keyless lock" mode.

Figure 13 is a partial perspective view of a lock constructed according to a second embodiment of the present invention.

In the following description, for the sake of simplicity, directions such as "up" or "down" are only considered to refer to directions in the figures, and various elements may be positioned in different directions in the lock.

A vehicle door lock according to the invention generally comprises a bolt 5 with pawl 6, a central locking lever 1, an outer opening lever 4 connected to an inner handle (which is connected to the inner locking control) and a The pseudo pawl 3.

The middle opening lever 7 is connected to the central locking lever 1 in a known manner by moving the outer opening lever 4 out of the lock.

This lock provides a "cancellation" function by means of the closing movement transmission of the false pawl 3 to the unlocking movement of the central locking lever 1 .

According to the invention, the device consists of the built-in element of the central locking lever 1, which, when closing the door, sits on the track of the false pawl 3, which slides from the locked position to the unlocked position by moving in one direction.

The dummy pawl 3 is connected to the pawl 6 by a common axis of rotation 3A.

Said sliding direction of the central locking lever 1 is perpendicular to the common axis of rotation of the pawl 6 and the dummy pawl 3 .

According to FIGS. 1 to 12 , the first embodiment firstly describes the "cancel" function and the "keyless lock" function in detail.

In Figure 1, the lock is in the open and unlocked position. Electric or mechanical braking moves the central locking lever 1 down to the locked position, as shown in Figure 2.

When the door is closed, in this locked position, the locked bolt 5 turns and causes the rotation of the pawl 6 and the dummy pawl 3 connected to the pawl 6 . The pawl 6 thus contacts the free bent end 2A of the torsion spring 2 embedded in the central locking lever 1 and pushes it upwards. Correspondingly, the spring pushes the central locking lever 1 upwards until the bolt has been rotated to the maximum, as shown in FIG. 3 . In this position, the travel of the central locking lever 1 is 2/3 of its full travel.

More specifically, the central axis of the torsion spring 2 is perpendicular to the sliding direction of the central locking lever 1 .

The released middle opening lever 7 returns to the unlocked position, and the lock is in the unlocked state.

Afterwards the bolt 5 reaches the semi-closed position, as shown in Figure 4, and the pawl 6 returns to its rest position. This means that the central locking lever 1 exceeds 2/3 of its total travel, of which the bistable spring 8 is only present in Figures 1 and 2, showing its two corresponding stable positions, corresponding to the unlocked and locked positions of the lock respectively , the bistable spring keeps it in the end position of its travel, and the state of the lock remains unlocked. A bistable spring 8, for example a hunting horn type bistable spring, is optimally connected to an inner locking lever 9, which is bidirectionally connected to the central locking lever 1, thereby also ensuring its bistability.

Then, as shown in Figures 5 and 6, the bolt continues to turn to the fully closed position without further action of the spring 2, thereby not changing the state of the lock.

The "keyless lock" function is also fulfilled by a lock according to the invention.

If we consider Figure 1 again, the lock is in the open and unlocked position. Electrical or mechanical braking moves the central locking lever 1 down to the locked position, as shown in Figure 2 or 9. The outer opening lever 4 is thus in the position shown in FIG. 7 , in the unbraked state.

The door is thus locked and opened and the handle is braked and held until the door is closed. The outer opening lever 4 rotates clockwise, as shown in FIG. 8 , and its flange 4A faces the corresponding tenon contact 1A of the central locking lever 1 , as also shown in FIG. 9 .

When the car door is closed, the bolt 5 rotates as shown in Figure 10, so that the pawl 6 and the false pawl 3 are rotated. The latter then comes into contact with the integral spring 2 and pushes it upwards. However, the central locking lever 1 does not move upward because it is locked together by the flange 4A and the tenon 1A, and the handlebar remains in the braking state. The spring 2 is thus deformed and bent.

A maximum rotation is thus produced, the intermediate opening lever 7 remains in the locked position, after which the bolt 5 reaches the half-closed position shown in Figure 11, after which the pawl 6 returns to its rest position. After the false ratchet 3 releases the tension spring 2 and makes it get back to its original state, without changing the state of the central locking lever 1, it remains in the locked position all the time.

The bolt 5 then continues to rotate until fully moved as shown in Figure 12, without changing its locked state, releasing the spring 2 after another tensioning cycle.

This arrangement according to the invention makes it easier to simultaneously accommodate the kinematics of European-type locks, and the functionality of Asian-type locks, and its components are less costly.

In other respects, the establishment of the "override" function can be summarized as a direct internal opening, regardless of the synchronization of the unlocking action, and the "cancellation" function is proposed, by adding a simple small spring, ensuring the first time after the opening action Unlock and lock.

"Override" type locks are compatible with the added "Cancel" feature, as described above, without kinematic disturbances.

By simply adding a 4A interface to the external opening lever, the "keyless lock" feature can provide an "emergency shutdown" function without adding components or interfaces to the key interface.

Fig. 13 illustrates a second embodiment of the present invention.

According to this variant, the previous built-in spring 2 is replaced by a tenon 2 ′ connected to the central locking lever 1 , made for example by molding on it, and perpendicular to the sliding direction of the central locking lever 1 .

The "cancel" function is the same as the above description, with one component missing, but the "keyless lock" function can no longer be implemented.

Compared with the "override" function, we found the same compatibility advantages as above, but we lost the possibility of emergency locking without a specific interface.

Claims (11)

1. car door lock includes the bolt (5) of ratchet (6), central authorities' securing rod (1), the outer all-or-nothing piece (4) be connected with outer handle, with interior lock control to be connected in securing rod (9), and described central securing rod (1), one is connected to the pseudo-ratchet (3) on ratchet (6), a lock with " cancellation " function, transmitted by the closing motion of described pseudo-ratchet (3) and unlock central securing rod (1) running, its feature is the described embedded element that described device contains described central securing rod, be positioned on described pseudo-ratchet (3) track when closed door, described center lock fixed pole (1) is moved by one direction, unlocked position is slid into from latched position.

2., according to claim 1, this lock feature is that described dispensing device is spring.

3. according to claim 2, this lock feature is, described spring is torsionspring (2), described spring element one end open one section bending (2A).

4. according to claim 3, this lock feature is, described torsionspring (2) central axis is in the described glide direction of described central securing rod (1).

5. according to one of aforementioned claim, this lock feature is that described central securing rod (1) comprises the flange (4A) of contact (1A) and described outside all-or-nothing piece (4), the braking of outside all-or-nothing piece (4) makes described flange be resisted against described contact, makes described central securing rod (1) be stuck in latched position.

6., according to claim 1, this lock feature is, described conveyer be one with the tenon of described central securing rod (1) one (2').

7., according to claim 6, this lock feature is that (2') described tenon is perpendicular to the described glide direction of described central securing rod (1).

8., according to aforesaid claim, this lock feature is that described pseudo-ratchet (3) is connected by common rotating shaft (3A) with ratchet (6).

9. according to Claim 8, this lock feature is, the described glide direction of described central securing rod (1) is perpendicular to the described rotation common axis of described ratchet (6) and described pseudo-ratchet (3).

10. according to one of aforementioned claim, this lock feature is that it comprises a bistable spring (8), and its stable resting position corresponds to locked.

11. according to aforementioned claim, and this lock feature is that bistable spring (8) is connected to described interior securing rod (9).