SE528660C2 - Apparatus for mechanical control, locking module and locking device including such device - Google Patents

Abstract

A device for mechanically guiding components in a lock arrangement, preferably for guiding a follower unit, comprising an electrically actuable manoeuvring element (21) preferably a motor. A first engagement element (23,24) is coupled mechanically to the manoeuvring element for linear movement along a movement axis between a first and a second end position. A first arm (25) which is rotatable about a rotatable shaft (A) includes a second engagement element (27) located in mechanical engagement with the first engagement element. Because each of the first and second engagement elements (23,24,27) includes a groove (27) which extends at least partially out of parallel with the movement axis of the first engagement element, the first arm is caused to rotate when the first engagement element moves linearly. This results in a simple and flexible guide device.

Description

en nan to oo lO 15 20 25 30 528 660 q; co nu oc uno cau u q 00 .: o I '' ß 'z :::::: ...- :: r% ~ - - j Q Û ÜÜÜ. Ü Q I 2 "2 '.' Nu o. ~: 2, '',. ' uno ooøn n. a A further disadvantage of known solutions is that in the case of a solenoid used as an actuator, they require an electric supply source, which has drawn a relatively large amount of current. , such as a battery, made difficult or even impossible.

International patent publications WO02 / 059440 and WO02 / 059441 describe a locking device arranged for engaging and disengaging a knob function. The locking device comprises a hub with an outer part connected to a spindle and a centrally located follower. A coupling means is provided for coupling the outer part and the follower.

The coupling member, which is movably mounted about an axis parallel to the center axis of the hub, can be moved between an engaging position and a disengaging position by means of an electrically supplied solenoid. This enables selective connection of the spindle function. However, the locking device shown is energy and space consuming and is also not suitable for modular construction of the locking device.

SUMMARY OF THE INVENTION An object of the present invention is to provide a device for mechanical control of parts included in a reading which is more flexible and less space-consuming than today's solutions.

The invention is based on the insight that a compact and at the same time flexible control can be achieved by the use of one or more rotatable arms, the rotation of which is regulated by means of a linearly movable engaging member in engagement with grooves in the arms. According to a first aspect of the invention, there is thus characterized a device for mechanical control of parts included in a locking device, which device comprises an electrically actuable actuator, a first engaging means mechanically coupled to the actuator for linear movement along an axis of movement between a first and a second end position, and an arm which is rotatably mounted about an axis of rotation, the first arm having a second engaging member which is in mechanical engagement with the first engaging member, in that one of the first and second engaging means comprises a groove , which runs at least partially non-parallel to the axis of movement of the first engaging member.

According to a second aspect of the invention, there is provided a locking module comprising such a control device.

According to a third aspect of the invention, there is provided a locking device comprising such a control device.

With the control and locking device and the locking module according to the invention, the above-mentioned disadvantages of the prior art are eliminated or at least reduced. The control device according to the invention enables a compact construction with few parts and also allows modular construction.

By converting a linear movement of the first engaging member into a rotational movement of an arm depending on the design of the second engaging member, a very flexible construction is made possible, in which an exchange of one arm for another with a different groove configuration gives a new feature.

In a preferred embodiment, the control device comprises two grooved arms, which enables another; 0 o o o nu annu u ~. a n v av anno 1 u 0 ones .on n n u thin nova v coon n u aooø a 0 oro independent control of two parts using a single actuator.

Further preferred embodiments are defined by the subclaims.

BRIEF DESCRIPTION OF THE DRAWINGS The invention will be further described by way of example, with reference to the accompanying drawings, in which: Fig. 1 is an exploded view of a locking device according to the invention; Fig. 2 is a perspective view of a locking module according to the invention with a device for mechanical control according to the invention; Fig. 3 is an exploded perspective view of the locking module shown in Fig. 2; Fig. 4 is a perspective view of the mechanical control device shown in Figs. 2 and 3; Fig. 5 is an exploded perspective view of the device shown in Fig. 4; and Figs. 6a-c are plan views of the device shown in Figs. 4 and 5 in different operational positions.

DESCRIPTION OF THE PREFERRED EMBODIMENT In the following, a preferred embodiment of a locking device and a device for mechanical control according to the invention arranged therein will be described, initially with reference to Fig. 1. This figure shows a locking device, generally designated 1. comprises a locking post 2 to which a locking mechanism is mounted. The locking mechanism comprises conventional parts, such as a drop piston 3, a hook bolt, cylinder rudders, etc.

The locking mechanism is protected by a chest (not shown) AND a cover 4.

The locking mechanism also comprises a locking module in the form of a pressure rowing unit 10. This is arranged to communicate with an arm which controls the movement of the drop piston 3 between the unfolded and retracted position. The pressure rudder unit, which is shown in more detail in Figs. 2 and 3, comprises a pressure rudder hub 30 which is caused to rotate by a pressure (not shown) with a square pin inserted into a square opening in the rudder rudder hub. The pressure rudder unit 10 further comprises a mechanical control device, generally designated 20, which controls the operation of the hub 30. The hub 30 is mounted between an upper cover 31 and a lower cover 32 and together with the control device forms a module which functions as an independent part in the locking device 1.

The control device 20 will now be described in detail with reference also to Figs. 3, 4, 5a and 5b. The device comprises an electric motor 21 which is driven by a source of electric energy (not shown). This source can be a battery arranged in connection with the locking device or it can be an externally located source.

The motor has a screw-threaded shaft journal 22, on which a drive nut 23 with a continuous, internally threaded heel is threaded. The drive nut imparts a linear movement between an inner and an outer end position along the shaft journal as the motor rotates. The drive nut 23 also has a T-shaped pin part 24 with a first pin 24a and a second pin 24b, see in particular Fig. 5b, the function of which will be explained later. The control device also comprises an upper and a lower arm 25 and 26, respectively, which are mounted around a shaft pin A. The arms 25, 26 are arranged so that when rotated they affect the position of a resp. wing 33, 34 on the hub 30 for selective engagement and disengagement of its pressure function. For this purpose, the upper arm 25 has a groove 27 with two portions: a first portion 27a closest to the motor 21 which in the position shown in Fig. 4 runs parallel to the shaft pin 22 and a second portion 27b which runs non-parallel to the shaft pin 22. Also the lower arm 26 has a groove 28 but this groove is inverted towards the groove of the upper arm.

Thus, the first portion 28a, i.e. the portion closest to the motor 21, non-parallel to the shaft journal 22 while the second portion 28b runs parallel thereto.

The first pin 24a of the T-shaped pin part 24 engages in the groove of the upper arm while its second pin 24b engages correspondingly in the groove 28 of the lower arm. linearly along the shaft pin 22, one of the arms 25, 26 is rotated if the engaging part runs in the part of the groove which runs non-parallel to the shaft pin. This will now be described in detail with reference to Figs. 6a-c.

The device for mechanical control is shown in a starting position in Fig. 6a. The drive nut 23 is in an inner end position, i.e. closest to the motor 21. The first pin 24a is in a first end position in the groove 27, i.e. at the end of the first portion 27a of the track. As the drive nut moves through rotation of the shaft pin in the direction of the arrow from the inner end position, the first pin runs in the first groove portion 27a. Since this portion runs 108 20 25 30 528 660 parallel to the shaft pin 22, i.e. the shaft of movement of the drive nut, no rotation of the first arm 25 takes place as long as the first pin is in the first portion of the groove.

The lower arm 26, on the other hand, is given a counterclockwise rotational movement, see Fig. 6b. The reason for this is that the first portion 28a in the groove 28 of the lower arm runs non-parallel to the axis of movement of the drive nut and the second pin 24b pushes the lower arm counterclockwise when moving from the position shown in Fig. 6a to the position shown in Fig. 6b. for the drive nut. In the position shown in Fig. 6b, the lower arm has been rotated so that the second portion 28b of the groove 28, i.e. the portion at a distance from the motor 21, runs substantially parallel to the axis of movement of the drive nut. In this position, the lower arm presses on the lower wing 32 of the hub 30, which engages the push function of one side of the hub.

Thus, further movement of the drive nut from the position shown in Fig. 6b to the position shown in Fig. 6c does not cause the lower arm 26 to rotate further. This movement, on the other hand, causes the upper arm to turn counterclockwise.

The reason for this is that the first pin runs in the non-parallel second portion 27b of the groove 27, i.e. the portion at a distance from the motor 21. After moving the drive nut to its outer end position as shown in Fig. 6c, the upper arm has been given a rotation so that this arm also presses on its wing 33 of the hub 30, i.e. the upper wing. With both wings 33, 34 depressed, the pressure function on both sides of the hub is engaged.

The mechanical control device described above has several advantages over the prior art. Genom 10 15 20 25 30 528 660 o nl nu nu en u: ou un: .fi g a av: oon 0 v 'g 1 co uno 0 - ~ ::: ::: “" ....,. ¿; 2 ". : 1.4 0 .i g ° ,, ° ° .. ann nu: o n that the drive nut is moved by rotation of the shaft pin 22 enables an exact movement of the drive nut, where the movement becomes more precise the lower the pitch of the shaft pin threads. A further advantage obtained by the use of a threaded motor shaft journal is that the position of the drive nut as a result of friction and the thread drive is maintained substantially constant even when the motor is not fed. This in turn leads to lower energy consumption, as the motor supply can be disconnected when the drive nut is not moved.

Another advantage of the described device is that several arms can be controlled using a single drive nut.

This provides a simple and inexpensive construction.

In the preferred embodiment, the mechanical control device comprises two grooved arms. It will be appreciated that the device may also comprise only one arm or more than two arms.

Each track comprises two sections which run in mutually different directions. It will be appreciated that the grooves may be formed in any suitable manner to obtain the desired steering function, as long as at least a portion of each groove runs non-parallel to the axis of movement of the drive nut.

In the embodiment shown, the arms are arranged to influence the function of a pressure rower. It will be appreciated that a device for mechanical control according to the invention can also be used to control other functions in a locking device, such as locking mechanisms etc.

A device has been described above in which a tapered drive nut engages grooves in rotatable arms.

It will be appreciated that the device may be embodied with the reverse 10 function without departing from the spirit of the invention as expressed in the claims. Thus, a device is conceivable in which a linearly movable drive nut has grooves, in which pins on pin-provided, rotatable arms engage in respective grooves. Although an electric motor with a threaded shaft pin is shown as part of the electrically actuable actuator which also includes the drive nut, it will be appreciated that the motor and the drive nut may be replaced by a solenoid with an engaging means arranged thereon.

Claims (8)

10 15 20 25 528 660 10 PATENT REQUIREMENTS A device for mechanical control of parts included in a lock, which control device comprises: an electrically actuable actuator (21), - a first engaging means (23, 24) mechanically coupled to the actuator for linear movement along an axis of movement between a first and a second end position, - a first arm (25) which is rotatably mounted about an axis of rotation (A), - the first arm having a second engaging member (27) which is in mechanical engagement with the first engaging member, k.ä: xn.e1: e <: k nald a'v - that one of the first and second engaging means (23, 24, 27) comprises a groove (27), which has a first portion (27a), which runs parallel to the first the movement shaft of the engaging member, and a second portion (27b), which runs non-parallel to the movement shaft of the first engaging member. Device according to claim 1, in which the electrically actuable actuator (21) comprises an electric motor with a threaded shaft pin (22) and the first engaging member (23, 24) has an internally threaded hole in which the threaded shaft pin is in threaded engagement. . 10 15 20 528 660 ll A device according to claim 1 or 2, wherein the first engaging means comprises a pin (24a) and the second engaging means comprises a groove (27). Device according to any one of claims 1-3, comprising a second arm (26), which is rotatably mounted about the axis of rotation (A), the second arm having a third engaging member (28) which is in mechanical engagement with the first engaging member (23, 24). Device according to claim 4, in which the first engaging member (23, 24) comprises a pin part (24) with a first pin (24a) in engagement with a groove (27) in the first arm (25) and a second pin ( 24b) engaging a groove (28) in the other arm (26). A locking module (10) comprising a control device according to any one of claims 1-5. Lock module according to claim 6, comprising a rowing unit (30), preferably a pressure rowing unit, with which the first arm (25) engages for selective control of the function of the rowing unit. A locking device comprising a device according to any one of claims 1-5.