DE102012111004B4 - lock assembly - Google Patents

Abstract

Lock assembly (1) for a door, in particular for a cabinet door, with a housing (2) and a handle (3) which cooperates with at least one closing element (14), wherein the handle (3) by pulling in an opening direction into an open position in which the closure element (14) is in an unlocked position, and is movable by pressure in a closing direction into a closed position in which the closure element (14) is in a locked position, characterized in that it comprises a mechanical actuation lock (27 ), which comprises a pushbutton (20), a blocking element (21) and a spring element (26), wherein the blocking element (21) is movable by the spring element (26) into a blocking position, in which a movement of the handle (3) is blocked by the open position in the closed position by the locking element (21), and by force on the button (20) is movable into a release position in which a movement of the handle (3) of de Opened open position in the closed position.

Description

The invention relates to a lock assembly according to the preamble of claim 1.

Such a lock assembly is used for actuating a door or a flap, in particular a cabinet door and has a housing with a handle which cooperates with at least one closing element. By a train in an opening direction of the handle can be moved to an open position in which the closing element is in an unlocked position. By pressure or train in a closing direction of the handle is movable to a closed position in which the closing element is in a locked position.

Such a generic lock assembly is, for example DE 20 2011 003 768 U1 known. This lock assembly has a centrally located handle which is pivotally mounted to the housing. The pivoting movement of the handle is transmitted via a coupling mechanism to a closing element.

The opening of a door, for example, by simply pulling the handle, whereby on the one hand, the one or more locking elements are unlocked and at the same time the door of a door frame, such as the body of a cabinet, is moved away. The opening can thus be done without grasping an operator. In this case, usually in the open position, a latching of the handle, so that it remains in the open position with the door open and also holds the closing element in the unlocked position.

Closing the door is usually done by pushing the door over the handle. Especially with heavy or stiff doors, it may happen that the handle is released from its catch and is moved to the closed position, before the door is closed. Thus, the one or more locking elements take the locked position. In this case, the closing elements abut the door frame, whereby a closing of the door is prevented. This noise may occur and possibly the door frame or the door may be damaged. A reopening of the closing element is then necessary to close the door properly.

It is therefore starting from DE 20 2011 003 768 U1 An object of the invention to prevent premature locking of the closing elements when the door is pressed and to allow locking only after closing the door. The solution should be simple and inexpensive to produce and fit the lock assembly in existing recordings, so do not need more space than previous lock assemblies.

According to the invention this object is achieved by a lock assembly having the features of claim 1. Main features of the invention are specified in the characterizing part of claim 1. Embodiments are the subject of claims 2 to 10.

The lock assembly according to the invention is therefore characterized in that it comprises a mechanical actuation lock, which comprises a button, a locking element and a spring element, wherein the blocking element is movable by the spring element into a blocking position, in which a movement of the handle from the open position to the closed position is blocked by the blocking element, and is moved by force on the button in a release position, in which a movement of the handle is released from the open position to the closed position.

By this configuration it is achieved that with a simple pressing of the door, so when pressure is applied to the handle, no locking of the or of the closing elements takes place. Rather, the handle is held by the actuating lock against the force in its open position until the door is closed. When the door is closed acts by the system, for example, on the door frame or the adjacent door, a force on the button, whereby the button is moved and the locking element is moved to a release position. The actuation lock comes with mechanical elements and no additional interference-prone sensors. By the actuation lock so premature locking is prevented when the door is pressed and yet achieved a simple locking after closing the door, without encircling is required. Rather, the pressure force initially required to close the door, which acts on the handle, after release of the handle for moving the handle into the closed position and used to lock the closing elements. The actuation lock is thus not disturbing for the operator. Additional handles are not required to close the door. So it is an increased security achieved without reducing the ease of use.

Preferably, the blocking element is movable by force acting on the button in the opening direction into a release position.

A simple construction results from the fact that the button protrudes laterally out of the housing and / or projects beyond an underside of the housing. As a result, the button can be relatively easily placed in a position where it closes when closing the door comes into contact with a stationary or movable part, for example the door frame or a nearby door.

In a preferred embodiment, the blocking element and the button are connected to each other via a rocker arm, on which the spring element, which is in particular designed as a torsion spring, wherein also another resilient member can be introduced here, attacks, wherein the blocking element and the probe in particular in one piece the rocker arm are formed. Such a configuration results in a very simple structure, wherein a play-free, direct power transmission is achieved by the button on the locking element. The blocking element can form one arm of the rocker arm and the button the other arm of the rocker arm, wherein between the locking element and the button of the rocker arm is mounted on a pivot axis in the housing. By an appropriate choice of lever lengths can be achieved any force translation. In this case, the spring element is placed in a position from which it exerts such a force on the rocker arm that the locking element is pressed into a position in which it blocks a movement of the handle from the open position to the closed position. In this case, the movement of the blocking element can be released by pulling out the handle. This results in an automatic locking of the handle in its open position.

In order to facilitate a simple insertion of the lock assembly in a corresponding mounting hole of the door, the button is preferably locked in a mounting position in which it is pressed and from which it is releasable by operating the handle or a bolt. In the delivery state, the button can then be arranged in the assembly position and thus hardly protrudes beyond the housing, so that it does not hinder the insertion of the lock assembly. In the mounting position, there is no release, the release position is reached only after pressing the handle.

Preferably, the handle is pivotally mounted at one end in the housing and has at the other end an angled first end portion with a foot on the end facing away from the handle, wherein the end portion is guided in an opening in the housing. Guided does not mean in this context that a lateral system is required, but only that the end portion is movable through an opening in the housing. The end portion may be formed integrally with the handle, but also connected as an additional element with the handle. The handle is rotatably mounted in the housing via an axis, wherein the axis can be realized for example by projecting pins which are formed on the handle. Such a pivotally mounted handle can be operated very ergonomically and allows a good power transmission.

It is particularly preferred that the handle on the pivotally mounted in the housing end has a second angled end portion which is connected via a coupling mechanism with the closing element. As a result, a relatively direct implementation of the movement of the handle in a corresponding movement of the or the closing elements is possible. The second angled end portion can in turn be formed integrally with the handle, but also be manufactured as an additional element which is firmly connected to the end of the handle.

In this case, the first end portion and the second end portion parallel to each other. The end sections then form, as it were, a U with the handle, wherein in the closed position the two end sections are received in the housing and a gripping area runs essentially parallel to the door or to the housing.

The linkage can have a linearly movably mounted in the housing slide, which is connected to one end of the second end portion of the handle, wherein a linear movement of the slider, in particular via a rack gear pairing in a rotational movement of a distributor plate is convertible, in particular in one piece with the is formed as a locking bolt closing element which protrudes laterally from the housing. The coupling mechanism can also have up to two directed to different sides locking rods, which cause an additional locking of the doors by penetrating into external components. The pivoting movement of the handle is thus first converted into a linear movement and then again into a rotational movement. This results in a transmission from the end of the handle to a relatively centrally disposed closing element or the centrally arranged distributor plate. The locking bolt or the distributor plate can then be arranged at the level of the relevant point of force application, that is, at a point at which the handle is grasped with one hand. Thus, the handle or the lock assembly can be easily used at a height, as is customary, namely at the level of a recess in the frame, which serves to receive the locking bolt.

In this case, the slide may have latching recesses which are arranged such that at least one latching lug of the housing in the open position and in the closed position engages in at least one of the latching recesses. Regardless of the operating lock, the handle is then latched in the closed position and the open position, so it can only be moved by overcoming a certain force from the closed position or open position. The handle is thus held relatively stable in the open position or closed position. Depending on the configuration of the recesses can also be achieved that the slider is pulled into the respective detent position, so that the handle is moved to the open position or closed position, shortly before he has actually reached this position. This gives a very high quality impression and ensures that the handle occupies one of its end positions. In this case, for example, be provided with a protruding pin housing, which can engage in the recesses.

In a preferred embodiment, the blocking element in the open position of the handle below the foot of the first end portion, wherein in particular a pivot axis of the rocker arm is arranged on a movement axis of the first end portion in the housing. As a result, the blocking element can absorb very high forces. A force which acts on the first end section when the handle or the door is pressed in can not cause any movement of the tilt lever, since the action of force takes place exactly at the level of the pivot axis. Since the blocking element is also arranged on the movement axis of the end section, the force also does not cause any displacement of the blocking element out of the blocking position. In addition, latching noses may also be integrated here, which support these positions. Accordingly, there is a secure blockage of the handle in its open position.

In order to prevent unauthorized access or unauthorized opening of the door, a lock cylinder may be provided with a locking element in the closed position, which prevents movement of the handle from the closed position to the open position by positive locking in a closed position, in particular the locking element a the handle facing top of the foot of the first end portion covered in the closed position. This is a relatively simple design to prevent movement of the handle from the closed position out by positive engagement. The locking element may, for example, constitute a pivotably arranged projection, which can be moved into the path of movement of the foot of the first end section by actuating the lock cylinder. This trajectory is related to the handle, which also prevents closure in the closed position of the door.

As an additional manipulation barrier is located on the closing element, a slot which prevents a raised lever of the closing element with thin tools in the closed state. For example, the slot extends parallel to a door gap between the door and the frame. Since the locking movement is not parallel thereto and the thin aid, which is pushed through the door gap to lift the closure member high, is held in the slot, the aid itself blocks further lifting of the closure member by lateral abutment on the edges of the slot and at the edges of the door gap.

Advantageously, a holder for a key is in particular integrally formed with the housing at an underside of the housing, which optionally has at least one holder which is durable in elastic form and / or a screw connection. By such a holder, a secure accommodation of the key can be done. Frequently, such lock assemblies are used in the unlocked state. The key can then be securely stored on the bracket at the bottom of the housing, preventing loss of the key.

Optionally, a cover may be provided for the underside of the housing, for example, to exclude unauthorized removal of the key, but also to make the back more attractive and to protect against interference and contamination. Preferably, the handle is designed as a bow handle, wherein in the housing below the handle a trough is formed. Such a handle can be easily encompassed and relatively easy to operate both as a left-hander and as a right-handed person. It can easily be introduced higher forces. The handle runs as parallel as possible to a longitudinal axis centrally to the housing, being provided by the trough sufficient space between the handle and the housing to allow even with gloves grasping the handle.

For easy insertion and secure hold of the lock assembly in a corresponding recess of the door, the housing may have lateral retaining lugs. In this case, at least individual retaining lugs can be relatively elastic in order to keep the necessary deployment forces low and also to allow a damage-free removal of the lock assembly.

In a preferred embodiment, push rods are provided as closing elements, wherein a rod holder is arranged on the housing in particular. The lock assembly can then serve to operate a plurality of closing elements, such as a locking bolt and additional, at the top and bottom of the door located latches, which are operated by the push rods.

The housing may be made as an injection molded part, in particular made of plastic, wherein the handle with the end portions in particular comprises a metal. Alternatively, the handle and the end portions may also be made of plastic. This represents a very cost-effective variant, which is robust and reliable at the same time and allows a good haptic impression.

The actuation lock can also have a projection which prevents actuation of the locking element in the open position of the handle. A closing of the lock assembly or an actuation of the lock cylinder is thus not possible with the door open. The projection protrudes when the actuation lock occupies the release position, into the path of movement of the locking element. For this purpose, the projection may be formed on a side of the rocker arm facing the locking element. In particular, the projection extends substantially parallel to the pivot axis of the rocker arm.

• 1 Eine Schlossbaugruppe,
• 2 eine Unterseite der Schlossbaugruppe,
• 3 die Schlossbaugruppe ohne Gehäuse und
• 4 eine Detailansicht einer Betätigungssperre.

The invention will be explained in more detail below with reference to a preferred embodiment in conjunction with the drawings. Show it:

• 1 A lock assembly,
• 2 a bottom of the lock assembly,
• 3 the lock assembly without housing and
• 4 a detailed view of an actuation lock.

1 shows a lock assembly 1 with a housing 2 and a first end 4 one swiveling on the housing 2 stored handle 3 , At a second end 5 of the handle 3 is a first angled end portion 6 formed by an opening 7 in the case 2 is movably guided.

Below the second end 5 is in the case 2 a lock cylinder 8th arranged by the handle 3 can be locked in its closed position. In 1 shown is a position of the handle 3 in its open position, in the opening of a door 9 at which the lock assembly 1 is attached by pulling on the handle 3 in a direction perpendicular out of the plane of the drawing is possible. Opposite a door frame 10 , So a stationary part, and / or another door, so a moving part, is the door 9 pivoted.

2 shows the lock assembly 1 from their bottom. The housing 2 is open at its bottom in this embodiment, but it is also possible, the housing 2 to be provided on its underside with a cover, so to close. For latching in a corresponding recess in the door, the housing has retaining lugs 15 on.

In the case 2 is a coupling gear with a slider 12 and a distributor plate 13 arranged in one piece with a locking bolt 14 is formed, which constitutes a closing element. With a pole holder 17 For example, other closing elements, such as push rods, with the distributor plate 13 get connected. With a rotary movement of the distributor plate 13 around a rotation axis 16 then takes place a movement of the locking bolt 14 and optionally further closing elements between a locking position and an unlocking position. The rotation of the distributor plate is thereby a linear movement of the slider 12 generated, with one end 29 a second angled end portion of the handle is connected.

To prevent unauthorized opening of the lock assembly by lifting the locking bolt 14 To prevent with a thin tool, is at a lower edge of the locking bolt in the installation position 14 a slot 30 formed. The thin tool comes with the lifting in engagement with this slot 30 whereby a further lifting is blocked, as a slipping of the aid is prevented at the edge of the locking bolt. This sliding along is required because the movement of the locking bolt can not be made parallel to the movement of the tool, since its movement is predetermined for example by a door gap.

Below the linkage or distributor plate 13 is a rocker arm 18 around a pivot axis 19 swiveling in the housing 2 arranged, with the rocker arm 18 at one end a button 20 and at the opposite end a in 2 has not visible locking element. The rocker arm 18 will have an in 2 invisible spring element acted upon by a force that the button 20 presses out of the plane of the drawing in one direction and the blocking element in a direction below a foot 22 trained end of the first end portion of the handle moves. As long as the handle is in its closed position, such a movement is not possible. Rather, the blocking element bears against the first end section and therefore can not be moved into the blocking position.

Adjacent to the rocker arm 18 is an inner end of the lock cylinder 8th recognizable, that with a locking element 23 interacts. The locking element 23 may be formed as a single-ended disc or have a free contour shape that clearly describes the positions open / closed and is rotatably mounted so that it under the foot 22 the angled end of the handle is movable and then prevents movement of the handle from the closed position by positive engagement. In 2 is the movement of the handle by the locking element 23 not blocked.

Between the rocker arm 18 and the coupling gear 11 is a holder 24 for a key 25 formed, which includes a receptacle for example, a screw and elastic holder arms. This makes it possible to get the key 25 securely on the bottom of the case 2 to fix.

In 3 is the lock assembly 1 without housing 2 shown in three-dimensional representation. Arrows symbolize the direction of movement of the individual elements, which are marked with the same reference numerals as in the previous embodiments.

The handle 3 is in its closed position, so that the locking bolt 14 in its locked position. By pulling in an opening direction of the handle 3 be moved into its open position. This moves the foot 22 from the pivot axis 19 of the rocker arm 18 away, so the rocker arm 18 by the spring element 26 can be tilted until the blocking element 21 below the foot 22 the angled end portion 6 is arranged. The button 20 moves from the bottom of the case 2 away, ie against the direction of movement of the handle 3 or the door.

The movement of the handle 3 is via the coupling gear 11 on the lock bolt 14 transferred, which is adjusted accordingly in its unlocked position.

4 shows a side view of the rocker arm 18 with the button 20 and the blocking element 21 , which together with the spring element 26 a mechanical actuation lock 27 form. Shown is the rocker arm 18 in an assembly position. A corresponding position he takes when the door is closed and the handle 3 is in its closed position. The directions of movement of the individual elements are again marked by arrows.

In the blocking position, the blocking element is in the path of movement of the foot 22 introduced and locked so a movement of the foot 22 , It then acts as an actuation lock.

The pivot axis 19 of the rocker arm 18 lies on the axis of motion 28 the angled end portion 6 , This is done by the handle 3 on the rocker arm 18 even if the blocking element 21 is in a blocking position, ie between the pivot axis 19 and the foot 22 of the handle 3 is not a movement of the rocker arm 18 causing force on the rocker arm 18 exercised.

By the spring element 26 , which is designed as a torsion spring, the rocker arm 18 acted upon such that the blocking element 21 is pressed into its locking position as soon as the handle 3 is pulled out of the closed position and releases the movement of the rocker arm. The button 20 is at a greater distance to the pivot axis 19 arranged as the blocking element 21 , so that relatively small forces to actuate the button 20 suffice.

Due to the inventive design of the lock assembly, a door, such as a tool or storage cabinet, by a user can easily open and close, without the risk that when closing the locking elements already occupy their locked position and thus prevent the door from closing and by knocking on stationary elements or other moving parts, such as a frame or a nearby door, also cause damage. For a mechanical actuation lock is provided, which allows a depression of the handle, so a pivoting of the handle from its open position to its closed position, only when the door is closed. For this purpose, a button is provided which is spring-loaded and a movement of a locking element from a blocking position in which it blocks a movement of the handle, in a release position only if the button on a stationary element such as a door frame, or a movable part , such as a neighboring door, and thereby moves the rocker arm against the spring force. The button protrudes out of the housing of the lock assembly out to get in contact with the stationary or movable part when closing the door.

Thus, a very secure operation lock is obtained, which works automatically, without additional handles when opening or closing the door are required.

Claims (10)

Lock assembly (1) for a door, in particular for a cabinet door, with a housing (2) and a handle (3) which cooperates with at least one closing element (14), wherein the handle (3) by pulling in an opening direction to an open position in which the closing element (14) is in an unlocked position, and by pressure in a closing direction to a closing position in which the closing element (14) is in a locked position, is movable characterized in that it comprises a mechanical actuation lock (27) which comprises a push-button (20), a locking element (21) and a spring element (26), wherein the blocking element (21) is movable into a blocking position by the spring element (26) a movement of the handle (3) from the open position to the closed position by the blocking element (21) is blocked, and by force on the button (20) is movable into a release position in which movement of the handle (3) from the open position is released in the closed position. Lock assembly according to Claim 1 , characterized in that the button (20) laterally protrudes from the housing (2) and / or projects beyond an underside of the housing (2). Lock assembly according to Claim 1 or 2 , characterized in that the blocking element (21) and the button (20) via a rocker arm (18) are connected to each other, on which the spring element (26) that is designed in particular as a torsion spring, wherein the blocking element (21) and the button (20) are in particular formed integrally with the rocker arm (18). Lock assembly according to one of the preceding claims, characterized in that the handle (3) at one end (4) is pivotally mounted on the housing (2) and at the other end (5) has an angled first end portion (6) with a foot (22). at the end facing away from the handle (3) end, wherein the first end portion (6) in an opening (7) in the housing (2) is guided. Lock assembly according to Claim 4 , characterized in that the handle (3) on the pivotally mounted on the housing (2) end (4) has a second angled end portion which is connected via a coupling mechanism (11) with the closing element (14). Lock assembly according to Claim 5 , characterized in that the coupling gear (11) has a linearly movable in the housing (2) mounted slide (12) which is connected to one end of the second end portion, wherein a linear movement of the slider (12) in particular via a rack gear pairing in a rotational movement of a distributor plate (13) is convertible, which is in particular integrally connected to the locking element designed as a closing element (14) which protrudes laterally from the housing (2). Lock assembly according to one of Claims 1 to 5 , characterized in that push rods are provided as closing elements (14), wherein on the housing (2) in particular a rod holder (17) is arranged. Lock assembly according to one of Claims 4 to 7 , characterized in that the blocking element (21) in the open position below the foot (22) of the first end portion (6), wherein in particular a pivot axis (19) of the rocker arm (18) on a movement axis (28) of the first end portion (6 ) is arranged in the housing (2). Lock assembly according to one of the preceding claims, characterized in that in the housing (2) a lock cylinder (8) with a locking element (23) is provided which in a closed position movement of the handle (3) from the closed position to the open position by positive locking prevents, in particular, the locking element (23) in a closed position a the handle (3) facing top of the foot (22) of the first end portion (6) in the closed position covers. Lock assembly according to one of the preceding claims, characterized in that the handle (3) is designed as a bow-shaped handle, wherein in the housing (2) below the handle (3) a trough is formed.

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