EP2159355A1 - Door opener unit with curved latch bolt guide surface - Google Patents

Abstract

The opener unit (101) has a retaining area (105) engaged with a lock latch (S) of a door lock. The retaining area is partially limited by a lock latch guiding surface (106) in a door opening direction (O). The lock latch slides on the guiding surface during opening of a door until the lock latch is withdrawn from the retaining area. The guiding surface is formed to be curved along individual sliding sections for the lock latch. A curving axis extends perpendicular to the opening direction and to an engaging direction (E) of the latch.

Description

The present invention relates to a door opening unit (or door closing unit), in particular for building doors, building windows and the like.

The invention particularly relates to a door opening unit having a receiving space for engaging a latch of a door lock. As long as the latch is stationary in the receiving space of the door opening unit, the door is locked in a door opening direction. After release of the lock catch (for example, by a remote controllable pivot device), the latch can be disengaged from the door opening unit. For this purpose, the receiving space of the door opening unit in the door opening direction is at least partially limited by a lock latch guide surface on which the latch bolt slides when opening the door or during the opening process or slides on it and thereby pushed back or pressed into the door lock until the exit of the latch from the recording room. By "slide off" or "slide along" is meant a translational relative movement of the lock latch (strictly speaking its tip) relative to the lock latch guide surface, which is also referred to below as "driving over", in which case there are signs of friction.

The following statements are not restrictive to a building door and its opening process. However, the invention can also serve other uses, for example. For building windows, covers and the like.

The prior art of this invention is based on the following FIG. 1 explained. The FIG. 1 shows a door opener unit 1 in section, as it is currently in widespread use. The door opener unit 1 has a receiving space 5 which serves to engage a latch S of a corresponding door lock (not shown) (the engagement direction is shown by an arrow E). The door opener unit 1 further comprises a door opener 2 and a Striking plate 4. Between the door opener 2 and the striking plate 3, an intermediate piece, not shown, can be arranged (for example, in order to increase the case engagement depth of the latch S into the receiving space 5). The door opener 2 comprises a pivoting latch or a pivoting latch device 22 with a blocking bolt 23. In the illustration shown, the tip of the latch bolt S is locked or locked in the door opening direction O by the blocking bolt 23. In this state, the door is closed or locked and can not be opened. The pivot latch 22 can be remotely unlocked by an unlocking mechanism, not shown in detail, whereupon the pivot latch 22 together with the locking block 23 counterclockwise (based on the illustration shown) can pivot around the pivot axis 24 and thereby releases the latch S in the door opening direction O. , The pushing back or impressions of the normally spring-loaded latch bolt S in the door lock is effected by a lock latch guide surface 6, which limits the receiving space 5 in the door opening direction O. The force for this is provided by the opening movement or opening force on the door. The lock latch guide surface 6 is formed as an inclined plane on which the latch bolt 6 or its tip slides along until it has reached the strike plate 4. The height difference to be overcome corresponds to the case intervention depth. The door can now be opened.

Object of the present invention is to provide a functionally improved door opening unit, which in particular allows a smooth opening of the door.

This object is achieved by a door opening unit with the features of claim 1. Preferred and advantageous developments are the subject of the dependent claims.

According to the invention, it is provided that the lock catch guide surface is curved or at least formed curved along a single sliding portion for the lock latch. In this case, a sliding section is a section of the lock catch guide surface which the lock catch moves over when opening the door or slides thereon. A sliding section can be defined, for example, by a path for the lock latch in the door opening direction, along which the door opener latch is pushed or pushed back by a defined amount or by a defined length into the door lock.

If the lock latch guide surface is formed as an inclined plane (prior art), there are substantially constant friction conditions for the lock latch on the lock latch guide surface and a constant speed with which the latch bolt is pushed back or pressed into the door lock (so-called fall engagement speed). Due to the invention curved Lock latch guide surface or at least one curved sliding portion, the friction conditions of the lock latch on the lock latch guide surface and the Falleneindrückgeschwindigkeit during the opening process (from the release of the lock latch to the exit of the lock latch from the receiving space) to the respective requirements can be adjusted (starting from a constant door opening speed in the door opening direction , which corresponds to the standard conditions, from which the following considerations and discussions emanate). The curvature of the lock catch guide surface or at least one sliding section also causes a longer guide path for the lock latch, compared to an inclined plane according to the prior art. In sum, this leads to an improved overall subjective impression of a person opening the door of the opening process, which is due to the adjustment of the friction conditions (harmonization) and the non-constant Falleneindrückgeschwindigkeit. Furthermore, the noise is much lower.

For the execution of the inventive idea, it does not matter which component of the door opening unit the curved lock latch guide surface or the curved sliding portion belong. The curved lock lug guide surface or the curved slide section can be formed on the door opener or on an intermediate piece or as a separate component (for example as a trap guide plate). It is also possible to separate the curved lock latch guide surface or the curved slide section and distribute it to various components or assemblies of the door opening unit.

According to a preferred embodiment it is provided that the lock latch guide surface concave, i. arcuately curved inward (or quasi in the door opening direction), is formed or at least has a concave sliding portion. In this way, the friction conditions for the latch bolt and the timing of Fallfallindrückgeschwindigkeit (accelerations and decelerations) can be changed particularly advantageous.

It is further preferred that the lock-lug guide surface or at least one sliding section of the same is designed to be simple or uniaxially spatially curved, namely around a curvature axis. This axis of curvature is a straight line. According to the lock latch guide surface is not twice or biaxially spatially curved, as would be the case, for example, in a dome shape. Furthermore, it is preferred that this axis of curvature extends substantially perpendicular to the door opening direction and substantially perpendicular to the engagement direction of the lock latch in the receiving space.

Preferably, the radius of curvature of the lock latch guide surface or the curved slide portion is not constant around the axis of curvature. As a result, in particular, the fall-in speed can be further varied or changed, while the latch travels over the curved lock-latch guide surface or the relevant curved sliding section.

According to a particularly preferred embodiment, it is provided that the lock latch guide surface has substantially three sliding portions, which are run over by the latch when opening the door or during the opening operation successively or in succession, or on which the latch slides, starting from a locking position or rest position of the latch (in which the door is closed or locked) until the exit of the latch from the recording room.

The individual sliding sections can be designed with different pitches. The slope indicates the extent to which the latch bolt is pushed back or pressed into the door lock, while the latch on the lock latch guide surface moves in the door opening direction. A flat slope means that in a large path of the latch in the door opening direction, the latch is pressed by only a small amount (length dimension) in the door lock. In contrast, a steep incline means that with a small distance of the latch in the door opening direction, the latch is pressed by a large degree in the door lock. Ideally, the slope is sized at each point to avoid self-locking conditions. This is the case, for example, when the pitch is greater in one point than the angle of friction between the lock latch (or its tip) and the lock latch guide surface at the same point.

It is preferably provided that the first sliding portion is flat (ie with a flat pitch). This can be made possible, for example, by a large radius of curvature (or large radii of curvature with a non-constant radius of curvature). Ideally, the first sliding portion initially runs substantially parallel to the door opening direction (and perpendicular to the direction of engagement of the lock latch in the receiving space), wherein the slope then steadily and progressively increases in the door opening direction. The first sliding portion forms a quasi tangential transition for the latch at the beginning of the opening movement to allow the latch a smooth transition from the stiction state (blocking position) to the sliding friction state. Ideally, the initial line or beginning edge of the first sliding section is offset relative to the tip of the lock latch in its locking position. It lies in the door opening direction and in the direction of engagement below the top of the latch. This ensures that the latch at the beginning of the opening process always comes directly in contact with this first sliding section in order to slide on it.

Furthermore, it is preferably provided that the second or middle sliding section is steep (i.e., steeply inclined). After passing over the first sliding portion in this second sliding portion a quick depression of the lock latch in the door lock with little change in direction in the door opening direction is possible (high Falleneindrückgeschwindigkeit). This can be achieved, for example, by a small radius of curvature (or small radii of curvature with a varying radius of curvature). However, it is also possible that the second sliding portion is not curved but as an inclined plane, i. with a linear slope, or at least provide a non-curved portion (non-curved passage).

Furthermore, it is preferably provided that the third sliding portion is formed flat (i.e., with a shallow slope). This can be made possible, for example, by a large radius of curvature (or large radii of curvature with a non-constant radius of curvature). The aim of this measure is to reduce the fall-in speed of the lock latch after passing over the second sliding section again. As a result, for example, a rebounding of the lock slide, which is greatly accelerated by the second sliding section, on the striking plate can be avoided or at least reduced. At the end of the third sliding section, a tangential transition into the striking plate plane is also possible.

An advantageous development provides that the third sliding section has a turning point at which the direction of curvature reverses. As a result, a tangential transition into the striking plate plane can be brought about. This will be discussed in more detail below in connection with an embodiment.

Preferably, the transitions between the individual sliding sections are tangent-continuous (i.e., kink-free). Self-explanatory, a sliding section is formed tangentially in itself.

Preferably, the door opening unit according to the invention comprises a pivotable pivoting latch with a locking block which locks or releases the latch in a door opening direction, the axis of curvature of the lock catch guide surface or at least one curved sliding section being aligned parallel to the pivot axis of the pivoting latch. Likewise preferred in that the initial line or initial edge of the first sliding section is arranged in spatial proximity to the pivot joint.

A further development of this provides that the locking block is adjustable in its position relative to the pivoting latch. The first sliding portion is in this case designed in particular such that with respect to each adjustment position of the locking block at the beginning of the opening movement for the latch case always a tangential transition from the locked position or rest position results, as explained above. In other words, the first sliding section also serves to compensate for different adjustment positions of the locking block.

Ideally, the curved lock latch guide surface or at least a single sliding portion is formed of a metal material, wherein a plastic material is also possible.

The door opening unit according to the invention can be arranged in a building both in a door frame and in a door leaf. Other uses are conceivable, for example. For a window or the like.

Hereinafter, a preferred embodiments of the invention will be explained in connection with the second and the third figure. Features shown herein are general features of the invention.

Fig. 1

eine Türöffnereinheit gemäß dem Stand der Technik in einer Schnittansicht, wie eingangs beschrieben;

Fig. 2

ein Ausführungsbeispiel der erfindungsgemäßen Türöffnereinheit in einer Schnittansicht; und

Fig. 3

den beispielhaften Verlauf einer gekrümmten Schlossfallenführungsfläche in einer schematischen Ansicht.

Show it:

Fig. 1

a door opening unit according to the prior art in a sectional view, as described above;

Fig. 2

an embodiment of the door opener unit according to the invention in a sectional view; and

Fig. 3

the exemplary course of a curved lock latch guide surface in a schematic view.

The FIG. 2 shows an embodiment of the door opening unit according to the invention, wherein the representation is largely that of FIG. 1 (Prior art) corresponds. The door opener unit 101 includes a door opener 102 and a strike plate 104. Between strike plate 104 and door opener 102, an intermediate piece, not shown, may be arranged. The door opening unit 101 has a receiving space 105 in which the tip of a latch S of a corresponding door lock (not shown) engages. The door opener 102 includes a pivot latch or a pivot latch device The position of the locking block 123 on the pivoting latch 122 is adjustable (for example, to prevent rattling of the door), for which an adjustment with a grid 126 is provided. In the illustration shown, the tip of the lock latch S is blocked in the door opening direction O by the locking block 123. In this condition, the door is locked and can not be opened. The pivotal latch 122 is releasable together with the locking block 123 by a remotely controllable unlocking mechanism 125 and, when released about the pivot axis 124, can pivot counterclockwise to release the latch S in the door opening direction O. The receiving space 105 is limited in the door opening direction O by a curved lock latch guide surface 106.

Hereinafter, an opening operation will be described. The opening process begins with release of the lock catch S from its locking, the door closing position, and ends when the latch S is at the level of the strike plate 104 and thus has left the receiving space 105. During the entire opening process, the latch S moves in the door opening direction O. All required forces are provided by the opening movement of the door (force on the door or door opening force).

To open the door, the release mechanism 125 is first operated remotely. Thereupon, the pivot latch 122 can be pivoted together with the locking block 123 counterclockwise about the pivot axis 124, whereby the tip of the latch S is released in the door opening direction. In a continued opening movement of the door in the door opening direction O, the tip of the lock latch S comes into contact or contact with the curved lock latch guide surface 106. A continued door opening movement causes the latch bolt S is pushed back against the direction of engagement E in the door lock or pressed until this has reached the strike plate 104 and can now slide in the door opening direction O on it. The door can now be opened. Due to the curved arc-shaped lock latch guide surface 106, the friction conditions and speeds (fall-in speeds) can be adapted to the respective requirements, which will be described below in connection with FIG FIG. 3 is explained in more detail.

The FIG. 3 shows an example of an exemplary course of a curved lock latch guide surface 106. Also shown is the tip of a latch bolt S, which is in the locked position or rest position in which it keeps the door closed. Also indicated is a directional system composed of the door opening direction O and the case engagement direction E, these two directions are substantially perpendicular to each other. By means of these directional presets, an incline can be determined at each point of the lock catch guide surface 106. The gradient results from the quotient of a path of the latch in the engagement direction E to a corresponding path in the door opening direction O (delta E / delta O) or vice versa. A flat slope means that the lock latch S is pushed or pushed back along a relatively large distance in the door opening direction O by only a small amount or only a small amount into the door lock. A steep incline means that the lock catch is pushed along a short distance in the door opening direction O by a large amount into the door lock. At a constant speed of movement of the lock latch S in the door opening direction O, the fall-in speed can thus be influenced in a targeted manner.

The curved lock latch guide surface 106 can be divided into three sliding portions 106a, 106b and 106c, which are run over by the lock latch S (strictly speaking, the tip thereof) during the opening operation in contact (slipping of the lock latch). The transitions between the individual sliding portions 106a, 106b and 106c are formed tangent-continuous (kink-free).

The initial line or beginning edge A of the first sliding portion 106a is in the door opening direction O and in the engagement direction E below (or after) the tip of the latch S. This ensures that the latch S or its tip at the beginning of each opening movement (in the door opening direction O) always comes in direct contact with the first sliding portion 106a and does not touch this initial edge A, so that snagging or tilting is excluded at this initial edge. The first sliding portion 106a is also flat, that is formed with a small pitch (preferably with a large radius of curvature, with a linear portion is conceivable), the slope then steadily and progressively increases in the door opening direction O (decreasing radii of curvature). This allows at the beginning of the opening operation, a substantially tangential contacting or contact of the lock latch S on the first sliding portion 106 a, regardless of a respective adjustment position of the locking block 123 on the pivoting latch 122, and a smooth transition from a stiction state (in the lock latch pad 127th ; see. FIG. 2 ) in a sliding friction state. At the same time, the lock catch S in the first sliding section 106a is pressed into the door lock only by a small amount, so that only slight opening forces must be applied to the door at the beginning of the opening process. During the opening process, the lock latch S is pressed steadily and progressively increasingly into the door lock at the end of the first sliding section 106a. The fall-in speed increases to to allow a smooth transition into the second and middle sliding portion 106b. This is achieved by making the radius of curvature smaller towards the end of the first sliding portion 106a.

The second sliding portion 106b is steep, so that a rapid depression of the lock latch S in the door lock with little change in the door opening direction O occurs. As illustrated, the second sliding portion 106b may also include a linear, non-curved portion. After the lock catch S is now in a sliding friction state after passing over the first sliding portion 106a, the fall indentation speed can be increased without requiring a noticeable increase in the door opening force.

The third sliding portion 106 c has the task of the high Falleneindrückgeschwindigkeit resulting from the driving over the middle sliding portion 106 b to reduce again to prevent after leaving the receiving space 105, a rebound of the latch bolt S on the strike plate 104. The solution therefore provides that the slope becomes flatter again. In addition, it can be provided that a tangential transition to the striking plate 104 is formed, which, however, requires a point of inflection W for a change in the direction of curvature. The lock trap guide surface 106 is tangent-shaped in the region of the inflection point W.

In sum, this always results in a very harmonious opening process. This is noticeable, for example, by a uniform or uniformly applied opening force on the door. This advantage is given in particular also at different adjustment positions of the locking block 123 on the pivoting latch 122.

Claims (10)

Door opening unit (101) having a receiving space (105) for engaging a latch (S) of a door lock,
said receiving space (105) being delimited in a door opening direction (O) at least partially by a lock latch guide surface (106) on which the latch bolt (S) slides out of the receiving space (105) upon opening the door until it exits,
characterized in that
the lock catch guide surface (106), at least along a single sliding portion for the lock latch, is curved. Door opener unit (101) according to claim 1,
characterized in that
the lock catch guide surface (106) is concave or at least has a concave sliding portion. Door opener unit (101) according to claim 1 or 2,
characterized in that
the lock catch guide surface (106) or at least one slide section thereof is simply spatially curved about a curvature axis, said curvature axis extending substantially perpendicular to the door opening direction (O) and perpendicular to the engagement direction (E) of the lock catch. Door opening unit (101) according to one of the preceding claims,
characterized in that
the radius of curvature of the lock latch guide surface (106) or at least one curved slide portion is not constant. Door opening unit (101) according to one of the preceding claims,
characterized in that
the lock catch guide surface (106) has substantially three sliding sections (106a, 106b and 106c) on which the lock catch (S) slides from the receiving space (105) starting from a blocking position until it leaves the door, the first sliding section (10) 106a) is flat, the second sliding portion (106b) is steep and the third sliding portion (106c) is flat again. Door opening unit (101) according to claim 5,
characterized in that
the second sliding portion (106b) is not curved or at least has a non-curved portion. Door opening unit (101) according to claim 5 or 6,
characterized in that
the third sliding portion (106c) has a turning point (W) at which the direction of curvature changes. Door opening unit (101) according to claim 5, 6 or 7,
characterized in that
the transitions between the individual sliding portions (106a, 106b and 106c) are formed tangentenstetig. Door opening unit (101) according to one of the preceding claims,
marked by
a pivotable pivoting latch (122) having a locking cam (123) which locks or releases the latch (S) in the door opening direction (O), the axis of curvature of the latch guiding surface (106) or at least one curved sliding section being parallel to a pivot axis (124) the pivotal latch (122) is. Door opening unit (101) according to claim 9,
characterized in that
the locking block (123) is adjustable in position relative to the pivoting latch (122).

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