RU28716U1 - Electromechanical lock drive for a vehicle - Google Patents

Description

Electromechanical lock drive for a vehicle

The utility model relates to the automotive industry, in particular to the construction of a lock designed to block unlockable vehicle components, such as doors, hood, trunk lid, etc. This lock can be used as the main lock to block, for example, the hood in the closed position or as an additional lock in relation to the standard hood locking device.

Known is the electromechanical lock drive for a vehicle, comprising a housing in which a slider is located with the possibility of reciprocating movement, one end of which is connected to a cable extending outward of the housing connected to a remotely located locking operating element, an electric motor whose shaft is connected to a rotational drive gear lead screw mounted in the cavity of the slider for mixing; the last while rotating this screw (RU, magazine “Driving, article“ Double protection for the whole family , 1999, No. 2).

This lock has a commutator motor, on the shaft of which the drive gear is rigidly fixed, transmitting torque to the driven gear, rigidly connected to the spindle, which, in turn, tells the reciprocating motion of the slider and the main cable connected with it.

This lock has a serious drawback, due to the fact that due to the rigid connection of the pinion gear with the motor shaft, the latter always stops in the same position, which leads to burnout of the collector plates and the failure of the motor, as well as to wear and chipping gear teeth. These features reduce the reliability and durability of the castle as a whole.

This utility model is aimed at solving the technical problem of ensuring the reliability and durability of the electric motor by automatically turning it off and reducing dynamic loads on the gear transmission. The technical result achieved in this case is

E05B 65/00

reliability and durability of the castle and its protective properties when used on a vehicle.

The specified technical result is achieved in that the electromechanical lock drive for the vehicle, comprising a housing in which a slider is located with the possibility of reciprocating movement, one end of which is connected to a cable brought out to the outside of the housing, connected to a remotely located locking operating element, an electric motor, the shaft of which connected with the drive gear of the drive screw rotation of the screw mounted in the cavity of the slider to move the latter during rotation of this screw, equipped with a cent a reliable clutch, which includes a body element rigidly fixed to the motor shaft, in which at least one radial hole is made, in which a spring-loaded weight is placed, and a lever, one shoulder of which is connected to the drive gear of the rotor drive, and the other shoulder, oriented parallel to the motor shaft, is located with a gap above the housing element with overlapping radial holes of the latter.

These features are significant and interconnected with the formation of a stable set of essential features sufficient to obtain the desired technical result.

This useful model is illustrated by a specific example, which, however, is not the only one, but clearly demonstrates the possibility of achieving the above set of essential features of the required technical result.

In FIG. 1 - centrifugal clutch;

FIG. 2 is a longitudinal section of an electromechanical lock drive.

According to the present utility model, the vehicle lock includes a drive part (Fig. 2), including a housing 1, in which a slider 2 is located with the possibility of reciprocating movement, one end of which is made with a fixing unit for the cable 3 brought out to the outside, an electric motor 4 , the shaft of which is connected through a centrifugal clutch 5 to the pinion gear 6 engaged with the pinion gear 7 connected to the spindle 8 (these gears form the spindle 8 rotational drive). On the inner surface of the cavity of the slider a helical spiral is made, and the lead screw 8

mounted in the cavity of the slider to move the latter during the rotation of this screw, due to the formation of the transmission of the type "screw-nut.

The housing 1 also houses the rotation sensor 9 of the driven gear 7 and the control electronic board 10, intended for mounting an electrical circuit for controlling an electric motor. The control electronic board is electrically connected to the electric motor and to the optical-mechanical rotation sensor of the driven wheel, and also has the ability to connect to external control devices. A wide range of functions can be assigned to a control electronic board, depending on its design. In particular, a drive equipped with such a board can play the role of one of the sensors of a car security system. In this case, when you try to squeeze the tip of the canot lock, the main cable, rigidly connected with it, sets the slider in motion. The translational movement of the slider is converted into the rotational movement of the spindle and the driven drive gear rigidly connected to it. The rotation sensor of the driven gear transmits a signal to the control electronic board, which supplies voltage to the motor in such a way as to prevent the rod from being squeezed out. At the same time, the board sends a signal to the central unit of the security system about an attempt of unauthorized access to the car. The central unit can activate sound and light alarms and send a message to the owner or security service.

Also, the control electronic board can receive a signal about the status of the hood limit switch and turn the ignition lock on or off.

In the proposed design, the drive gear 6 is connected to the shaft of the electric motor 4 through a centrifugal clutch 5 (see Fig. 1). The centrifugal clutch includes a housing element 11, which is rigidly fixed to the motor shaft, in which at least one radial hole is made, in which a spring-loaded weight 12 is placed, and a lever 13, one shoulder connected to the pinion gear 6, and the other shoulder 14 of which is oriented parallel to the motor shaft, is located with a gap above the housing element with overlapping radial holes of the latter.

an arbitrary, not rigidly fixed position, which prevents them from burning.

In addition, when using a centrifugal clutch, there is time to unwind the rotor of the engine, while the load and, accordingly, the current consumed by it increases smoothly, and not jumpwise, which also increases its durability. And the use of a rotation sensor 9 of the driven gear as a feedback sensor reduces the time of the engine, which also increases the durability of the lock drive.

According to the present utility model, the lock operates as follows.

For the initial position of the lock drive, we take its “retracted position, corresponding to the slider completely pushed to the right (Fig. 2).

When the voltage at the contacts of the motor 4 is reduced, the shaft of the latter starts to rotate. The weights 12 of the centrifugal clutch 5 under the action of centrifugal force begin to diverge to the sides, overcoming the resistance of the springs. At the same time, they slide out of their grooves (radial holes) in the casing element 11 of the centrifugal clutch until one of them comes into contact with the shoulder 14 of the lever 13, mounted on the leading gear gear 6, which begins to rotate. The rotation is transmitted to the driven gear 7, rigidly connected to the spindle 8, which drives the slider 2. The slider moves, pushing the cable 3 forward until the rear wall of the slider rests against the front support of the spindle. At the same time, the sensor 9 sends a signal to the electronic board 10 to stop the rotation of the driven gear 7. The voltage supply to the motor 4 is stopped. The weights 12 of the centrifugal clutch 5 return to their original position under the action of the springs, thus separating the motor shaft and the driving gear 6.

When voltage of opposite polarity is supplied to the motor contacts, the shaft of the motor 4 starts to rotate in the opposite direction, transmitting rotation through the centrifugal clutch to the gear transmission, as described previously. In this case, the lead screw begins to rotate in the opposite direction, the slider moves back and pulls the cable 3 along with it until the front wall of the slider rests against the front support. At the same time, the sensor 9 sends a signal to the electronic board 10 to stop the rotation of the driven gear 7. Feed

voltage to the motor 4 is terminated. The weights 12 of the centrifugal clutch 5 are returned to their original position under the action of the springs, thus separating the motor shaft and pinion gear 6.

When the driven gear 7 rotates in any direction, the optomechanical rotation sensor 9 is activated, which transmits a signal to the control electronic circuit board 10 of the drive. If it turns out that there is no current through the motor 4, the board 10 supplies voltage to it in such a way that the slider moves forward (to the left). At the same time, the board 10 can transmit a signal to the security system about an attempt to unauthorized entry into the vehicle.

This utility model is industrially applicable, as it can be implemented using technologies used in the manufacture of electromechanical devices.

Claims (1)

An electromechanical lock drive for a vehicle, comprising a housing in which a slider is located with the possibility of reciprocating movement, one end of which is connected to a cable brought out to the outside of the housing and connected to a remotely located locking operating element, an electric motor whose shaft is connected to the driving gear of the running gear a screw mounted in the cavity of the slider to move the latter during rotation of this screw, characterized in that the electric motor is equipped with a centrifugal clutch d, including a housing element rigidly fixed to the motor shaft, in which at least one radial hole is made, in which a spring-loaded weight is placed, and a lever connected with the driving gear of the rotor of the rotor with one shoulder, and the other shoulder of which is oriented parallel the motor shaft, is located with a gap above the housing element with overlapping radial holes of the latter.