KR20010021670A - Security latching and unlatching actuator and lock fitted with such an actuator - Google Patents

Abstract

This actuator comprises an electric motor 1 with an output gear engaged with a cog wheel 5 rigidly fixed to an axial screw 6 driving a safety lock mechanism actuator 11, which elements The actuator is disposed inside the housing 17 which is sealedly penetrated; The axial screw 6 cooperates with a nut 7 with means 8 which enable its parallel movement in a state in which its rotation is restrained, the actuator being arranged coaxially with the nut and screw and rotating the nut Each time the blocking means moves in parallel there is a safety locking mechanism operating sector 11 which is rotationally driven by the nut rotation blocking means, the sector being assembled with a seal 15 in the region through which the housing penetrates. This structure provides the advantages of compact and space-saving, while ensuring excellent sealing by the o-ring 15 between the rotating output sector 11 and the actuator housing 17.

Description

Safety Locking and Opening Actuator and Lock with Actuator {SECURITY LATCHING AND UNLATCHING ACTUATOR AND LOCK FITTED WITH SUCH AN ACTUATOR}

These elements are arranged inside the housing through which the actuator is sealed.

As a first type of actuator in which the tooth wheel and the screw installed through the wall of the housing to which it is attached are power transmissionally known, a nut type slider for operating the safety lock mechanism is known. Actuators of this type have the advantage of a simple structure because they are compact and manufactured in fewer parts for a given output. Conversely, the seal provided for sealing the actuator housing, which is the region through which the nut slider slides, is unstable because of the parallel mobility of the output.

In a second type of conventional actuator, the screw rigidly coupled to the toothed wheel has a nut having a dog poing coupling point coupled to the fork end of the connecting arm formed at its opposite end on the output arm. O-ring means formed for carrying out the sealing of the outlet are arranged on the two connecting arms.

This actuator provides good sealing due to its simplicity, but has the disadvantage of taking up a large amount of space in the X and Y directions.

It is therefore an object of the present invention to provide an actuator of such a shape designed to occupy only a small space while ensuring satisfactory sealing.

According to the present invention, a safety lock and open actuator for an automobile door lock comprises an electric motor having an output gear that meshes with a tooth wheel rigidly fixed to an axial screw that drives an actuator for a safety lock mechanism. An actuator is disposed inside the housing through which the actuator is hermetically sealed, the screw cooperates with a nut having means for enabling its parallel movement with its rotation restrained, and the actuator coaxial with the nut and screw. And a safety lock mechanism operating sector which is arranged to be rotated by the nut rotation locking means whenever the nut rotation locking means moves in parallel, wherein the sector is associated with the seal in the region passing through the housing.

As another feature, the sector is in the form of a receiving tube which terminates in a hole acting as a trunnion bearing for the screw which cooperates with the second bearing integrally with the housing.

Such a device occupies only a small space, and its output element, which cannot be moved in parallel except the rotating part, is housed, and the means that can be combined with the o-ring provide excellent sealing.

According to one embodiment of the invention, the bearing for the screw on the opposite side of the wheel is disposed in the sector, and the nut has a lateral protruding finger which is coupled to each of the spiral grooves integrally formed in the sector, thus moving the nut in parallel. The sector is then rotated about its axis.

Further features and advantages of the present invention will become apparent from the following description with reference to the accompanying drawings, which illustrate, but are not limited to, two embodiments.

1 is a partial cross-sectional view showing a first embodiment of an actuator according to the present invention;

2 is a partial cross-sectional view showing the side of the actuator of FIG. 1, FIG.

3 is a cross-sectional view taken along line 3-3 of FIG. 1,

4 is an enlarged perspective view of a second embodiment of the safety locking and opening actuator shown in FIGS. 1 to 3;

5 is a perspective view of the actuator of FIG. 4 viewed from another angle;

The device shown in the figure is a safety lock and open actuator for an automobile door lock (not shown).

This actuator comprises an electric motor 1 having an output shaft 3 on which a gear wheel 2 and a centrifugal clutch 4 are mounted. The output gear 2 is meshed with a toothed wheel 5 which is firmly engaged with an axial screw 6 with a nut 7 engaged with two laterally protruding fingers 8.

The screw 6 and the nut 7 may be arranged on one or both sides of the cogwheel 5, as shown in FIGS. 1 and 2 and 4 and 5 respectively showing two possible embodiments. The screw 6 is rotatably supported on two bearings 26, 27, one of which is arranged in the housing 17 and the other of which extends in the sector 11 on the output shaft side of the actuator. It is arranged at (28).

The radially opposed lateral fingers 8 are coupled to two respective spiral grooves 9 integrally formed in the cylindrical sector 11, which are coaxially with the screw 6 and the wheel 5. It is arranged. The sector 11 is composed of an output device of an actuator, and operates an operation pin 14 that forms part of a safety lock mechanism of a lock (not shown).

In addition, both ends of the finger 8 are coupled to corresponding slots 12, which slots are parallel to the screws 6 in the bracket 13, which are rigidly coupled to the housing 17 supporting the motor 1. It is arranged. The output sector 11 has an o-ring seal 15 supported by a peripheral collar 16 which seals with the wall of the housing 17 containing the component assembly, as described above. Keep it firm.

The elements of the actuator may be operated with the aid of a lock cylinder or dog shaft 18 coupled to the safety lock and opening linkage 19 from the latch by mechanical means, in the use of an emergency actuation key (not shown). Since the linkage 19 is operatively connected to the sector 11, in the event of a failure of the electric motor 1, this emergency manual key can be operated to rotate the sector 11 and its operating pins 14 Can be operated. Depending on the load and ease of operation of the desired key torque, the centrifugal clutch 4 may be eliminated.

FIG. 5 shows a possible embodiment of the mechanical connection between the linkage 19 and the actuating sector 11: the actuating sector has a rib 22 coupled to a notch 23 disposed in the linkage 19. The linkage 19 is characterized by having a flattening clasp 24 for receiving a driver 25 which is rigidly rotatably coupled to the lock cylinder 18. Therefore, when the lock cylinder 18 is rotated to turn the driver 25, the linkage 19 rotates the operating sector 11 by the protruding ribs 22 while moving in parallel.

The actuator described above may be arranged inside the same lock housing 17 as a master safety locking device of known type, not shown, if appropriate.

The operating method of the above-described actuator is as follows:

When the electric motor 1 is set to rotate in one direction or the other, its output gear 2 is rotated to drive the cogwheel 5 and the axial screw 6. The axial load exerted on the toothed wheels 5 due to the engagement of the gears 2 is absorbed by the bearings 26 arranged in the housing 17 in proximity to the toothed wheels 5, while being formed in the sector on the actuator output side. It is absorbed by the bearing arrange | positioned at the extension part of the accommodating hole 28. The nut 7 is restrained from rotation by a finger 8 which slides along the slot 12. Thus, the nut 7 can only be translated in parallel along the screw 6, during which the lateral finger 8 slides in the spiral groove 9.

As the dog poing of the finger 8 parallel to the axis of the screw 6 slides, it rotates the operating sector 11 coaxially with the screw 6 and the cogwheel 5. The safety lock operating pin 14 is operated in one direction or the other direction (as arrowed in FIG. 4) along the direction of rotation of the output sector 11.

During this rotational movement by the output sector 11, since the sector 11 only rotates and does not move, the sealing between this sector gear and the actuator housing 17 is not correct even during continuous operation of the lock. The ring 15 ensures complete stability.

Moreover, the actuator mechanism described above can be operated in a very compact manner, and as a result, the actuator has the advantage of being a compact structure that occupies a small space at the same time, and may or may not accommodate the centrifugal clutch device 4 By means of the rotary sector 11, the arrangement of the screws 6 in the housing 17, and the rotary sector 11 and the o-ring 15, excellent sealing can be maintained.

The housing 17 can accommodate the actuator alone as described above, and can accommodate the actuator together with the locking and unlocking mechanism of the door lock. Reference numerals for the main parts of the drawings are described below.

1 = electric motor

2 = output gear

3 = output shaft

4 = centrifugal clutch

5 = toothed wheel

6 = axial screw

7 = nuts

8 = finger

9 = Spiral groove

11 = output sector

12 = slot

13 = bracket

14 = operation pin

15 = o-ring seal

16 = Nearby Color

17 = Housing

18 = dog shaft or lock cylinder

19 = Safety Lock and Open Linkage

22 = protrusion rib

23 = notch

24 = terminal flat shackle

25 = driver

26, 27 = Bearings

28 = hole

The present invention relates to a safety lock and opening actuator for a vehicle door lock of a type comprising an electric motor having an output gear engaged with a cog wheel securely fixed to an axial screw for driving a safety lock mechanism operating device.

Claims (8)

Electric motor (1) with output gear (2) engaged with toothed wheel (5) securely fastened to axial screw (6) driving actuator (11) for safety lock (14 ...) These elements are arranged in the interior of the housing 17 through which the actuator is sealingly penetrated, the screw 6 having means 8 which enable its parallel movement with its rotation stopped. In cooperation with the provided nut (7), the actuator is arranged coaxially with the nut and screw, and the safety lock mechanism operating sector (11) which is rotationally driven by the nut rotation locking means whenever the nut rotation locking means moves in parallel. And the sector is coupled with the seal (15) in the region through which the housing passes. The method of claim 1, The sector 11 is characterized in that it is in the form of a receiving tube terminating in a hole 27 acting as a trunnion bearing for the screw 6 cooperating with the second bearing 26 integrally with the housing 17. Actuator. The method of claim 1, The sector 11 is tubular and the nut 7 has a lateral projecting finger 8 which engages each spiral groove 9 integrally formed in the sector, thereby causing the displacement of the nut 7 by the displacement of the nut 7. An actuator, characterized by rotating a sector about its axis. The method of claim 3, wherein The finger (8) is slidably coupled to a straight guide slot (12) parallel to the screw (6), wherein the slot is formed, for example, in the fixing part (13) integrally with the housing (17). The method of claim 4, wherein Actuator, characterized in that the rotating sector (11) is firmly coupled to the safety lock operating pin (14). The method according to claim 3 or 4, The actuating sector (11) is characterized in that it is connected with a safety lock and opening linkage (19) cooperating with a dog shaft (18) adapted to be operated by a manual key. The method of claim 1, Actuator, characterized in that the output shaft (3) of the motor (1) is provided with a centrifugal clutch (4). A locking device and a safety locking and opening mechanism, which are housed in the housing 17 and which are arranged inside the housing, the safety locking and opening actuators 1, 6, as described in claim 1. 7, 11, 14 ...).