EP0730077B1 - Cover holder on covers for door closer cases - Google Patents

Description

The invention relates to a hood holder on covers for cylindrical Door closer housing, which is installed in the cover hood as well is held on the door closer housing and at least one Retaining spring for supporting the cover hood on the door closer housing has, wherein the cover on the door closer housing rotatably mounted and the retaining spring or springs in the installed position on the door closer housing is or are locked.

Such a hood holder is, for example, by US 5,187,835 become known.

Such hood holders are used in particular for detachable fastening of covers on door closer housings, the Cover hoods in turn the door closer housing and that in it included door closer gearbox against environmental influences or pollution protect and the door closer system an appealing Give appearance.

The hood holder known from US 5,187,835 is in one piece with formed a U-shaped cover, the retaining springs locking lugs are provided on the free edge of the cover and engage in corresponding grooves in the door closer housing. So that the cover on the one hand on the base of the Door closer body rests and on the other hand their locking lugs must be able to engage in corresponding grooves in the base body the lateral surface of the base body in the direction of its base or concave the floor surface outwards and the grooves must be curved located near the bottom surface in the outer surface of the base body. The well-known hood holder or the cover hood can therefore only on door closers with a semi-cylindrical base be attached. In addition, the cover must be so elastic have free ends that the locking lugs over the semi-cylindrical Base body can be brought into engagement with the grooves.

The present invention is in contrast to this based on the task of a hood holder of the aforementioned Art to further develop that even with door closers with cylindrical door closer housing provides reliable support for the cover in the area of the bottom surface of the door closer housing is possible.

This object is achieved in that the hood holder is a part that can be mounted separately on the cover and has at least two resilient latching tongues as retaining springs, which is in the installation position between the highest point of the cylindrical outer surface and on the to the mounting surface of the Part of the cylindrical surface facing the door closer housing of the door closer housing at a distance from one another in the circumferential direction supporting the cylindrical surface, the cylindrical Reach behind the outer surface.

The use of two retaining springs requires a stabilizing one and a two-point support counteracting a clacking game Cover hood on the door lock housing. The hood comes over it at other points, for example the door closer housing, to the system, so there is play-free storage the cover hood ensures. In addition, the resilient locking tongues with appropriate training the assembly the cover. So it is constructively possible to use the locking tongues in such a way that from a certain stage of the movement, pushed onto the door closer housing with the cover hood , apply force to the cover in the opening direction. The latching of the retaining spring on the door closer housing allows easy assembly and with the appropriate design the snap connection an equally easy disassembly of the cover. So the cover can be used with one hand on the door closer housing slide on and fix automatically in their installation position.

In the case of hood holders according to the invention on covers for Door closer housing arranged on a base is in Development of the invention provides that the retaining spring (s) Cover hood against the base of the door closer housing supports (support). Such hood holder ensure that the cover hood on its edge on the open side on the Base area of the door closer housing is present. The non-rotatable Storage of the cover on the door closer housing is accordingly caused by the retaining spring (s) itself. So expediently is connected to a stable and against unwanted slagging Secured support of the cover hood.

A preferred embodiment of the hood holder according to the invention is characterized in that the retaining spring (s) cover the hood supported under pretension. Because of their bias is the retaining spring or the retaining springs of such Hood holder able to meet manufacturing tolerances to balance components to be supported.

Snap the retaining springs onto the associated door closer housing goes a sliding movement of the door closer housing facing end of the respective retaining spring along the housing surface ahead. A corresponding sliding contact between retaining springs and door closer housing results in the Disassembly of covers. So that now with the described Sliding movements on the contact surface of the retaining spring and Door closer housing reduces friction to a minimum, is provided in a further embodiment of the invention, that the retaining spring (s) on the door closer housing acting Rounded end, preferably with a cylindrical cross-section, is (are) trained. On spherically curved spring ends there is a point of contact on cylindrical spring ends a linear contact with the counter surface of the door closer housing.

According to the invention, the cover can be supported without play the door closer housing can be achieved in that between the Hood holder and the door closer housing and at the same time between the hood holder and the cover hood against unwanted Relative movements secured support is provided.

The fixing of the hood holder on the door closer housing is used it that - as provided in a further embodiment of the invention - The hood holder in the installed position on a contact surface with a positive fit supported on a counter surface of the door closer housing is. In the sense of a play-free storage of the hood holder on the cover it is provided according to the invention that the hood holder flat on the cover and / or via resilient positioning arms is supported. The support surfaces also make it easier the hood holder according to the invention as well as its resilient positioning arms the assembly of the cover by, for example during the pre-assembly of the hood holder for a positive guidance of hood holder and cover hood in their target position relative to each other to care.

The assembly work is further facilitated in that the hood holder is held clamped on the cover. The Clamp connection of hood holder and cover hood also allows the cover at any time without the use of assembly aids to dismantle.

In individual cases, however, it may be advisable to dismantle the Difficult to cover, but without the ease of use to interfere with assembly. For example, there should be covers also on door closer systems in public buildings have it attached as easily as possible. At the same time, losing weight is supposed to the covers, for example to protect against vandalism, only be possible under difficult conditions. Especially for such applications is an embodiment of the invention Hood holder determined at which the hood holder one in the longitudinal direction of the door closer housing above this and has resilient locking projection in this direction and on this via a on the assigned end face of the cover The provided snap-in receptacle can be released with the cover is locked and which is characterized in that the hood holder the cover that is locked with it via the retaining spring (s), locked against removal from the door closer housing supports the latter. Using such a hood holder the cover can, as already described above, in the simplest way, for example with one hand Slide onto the door closer housing. A corresponding one Remove the from the hood holder and the cover existing unit from the door closer housing, however prevented by the retaining spring (s). Instead, it needs to Removing the cover of an assembly aid, such as one Screwdriver with which the in the end face of the cover engaging locking projection of the hood holder into the interior press in the cover and thereby between the cover holder and the cover can release the existing lock. Only then can the covering hood still be in the installed position held hood holder can be separated.

A practical and structurally simple design of the invention, with the functions described above can be realized is characterized in that the hood holder in cross-section essentially U-shaped is, wherein the web surface of the hood holder an end face of the Cover hood and the corresponding end face of the door closer housing is assigned, one facing the cover Resilient locking tongue provided with the locking projection and a U-shaped on the side facing the door closer housing open and the contact surface for positive connection with the door closer housing forming stop rib and wherein the leg surfaces of the hood holder in the longitudinal direction of the door closer housing overlap with this on the door closer housing facing side each one of the resilient locking tongues, on the side facing the cover hood, forming the flat surface Supporting the cover, a clamping spring each Establish the clamp connection with the cover and each a resilient positioning arm protruding against the cover exhibit.

Is the hood holder - as is also provided according to the invention is perpendicular - with respect to one along the door closer housing symmetrical to its mounting plane trained, it can be optionally on each of the two end faces of the door closer housing.

Particularly for reasons of cost, it is expedient that the invention Hood holder designed as plastic injection molded parts are.

Fig. 1a

eine erste Ansicht eines Haubenhalters,

Fig. 1b

einen Schnitt entlang Linie I-I in Fig. 1a,

Fig. 1c

eine Ansicht in Richtung des Pfeils A in Fig. 1a,

Fig. 1d

einen Schnitt entlang Linie II-II in Fig. 1c,

Fign. 2a und 2b

den Haubenhalter der Fign. 1a bis 1d sowie eine Abdeckhaube in Vormontage-Ausgangslage,

Fig. 3

die Baueinheit aus Haubenhalter und Abdeckhaube der Fign. 1a bis 2b bei der Endmontage und

Fig. 4

einen Schnitt durch die Abdeckhaube in Endmontagelage.

The invention is explained in more detail below on the basis of schematic representations of an exemplary embodiment. Show it:

Fig. 1a

a first view of a hood holder,

Fig. 1b

a section along line II in Fig. 1a,

Fig. 1c

a view in the direction of arrow A in Fig. 1a,

Fig. 1d

a section along line II-II in Fig. 1c,

Fig. 2a and 2b

the hood holder of FIGS. 1a to 1d and a cover in the pre-assembly starting position,

Fig. 3

the unit consisting of hood holder and cover hood of FIGS. 1a to 2b during final assembly and

Fig. 4

a section through the cover in the final assembly position.

In Figs. 1a to 1d is shown in cross section essentially U-shaped hood holder 1 with a web surface 2 and in addition perpendicular leg surfaces 3, 4. In the web surface 2 of the hood holder 1 manufactured as an injection molded part are one keyhole-like opening 5 and this window-like adjacent Cutouts 6, 7 are provided. Inside the keyhole-like Opening 5 projects perpendicular to the plane of the drawing Fig. 1a resilient locking tongue 8 with a central locking projection in the form of a locking pin 9. To ensure the elastic The locking tongue 8 with a thin point 10 is movable molded the adjacent area of the web surface 2. At hers in particular, the back surface shown in FIG 2 a U-shaped stop rib 11 with a perpendicular from the Web surface 2 projecting contact surface 12.

The leg surfaces 3, 4 are with retaining springs in the form of against each other directed elastic locking tongues 13, 14 and resilient Positioning arms 15, 16 provided. In window-like recesses of the leg surfaces 3, 4 protrude clamping springs 17, 18 in the starting position protrude over the leg surfaces 3, 4 as well as that Bolt tongue 8 with the locking pin 9 over the web surface 2. Die free ends of the locking tongues 13, 14 and the positioning arms 15, 16 are formed with a cylindrical cross section. The optional right / left usability of the hood holder 1 results from its symmetrical training with respect to that in the Section line I-I of Fig. 1a perpendicular to the plane of the drawing Middle plane.

As shown in Figs. 2a and 2b emerges, a Cover 19 on which the hood holder 1 is premounted. On the end faces 20, 21 there is the cover 19 with latching receptacles 22, 23 provided. In a longitudinal surface 24 there is an open edge Cutout 25 recessed.

For pre-assembly, the hood holder 1 with the positioning arms is now used 15, 16 first inserted into the interior of the cover 19. The hood holder 1 is aligned so that the Locking pin 9 in the locking receptacle 22 on the end face 20 of the cover 19 engages. The leg surfaces 3. 4 of the hood holder 1 ensure its flat support inside the cover 19. A jamming connection between the two components is produced with the aid of the clamping springs 17, 18, which work together with the positive connection between the locking pin 9th and the snap-in receptacle 22 the hood holder 1 on the cover hood 19 Fix in the pre-assembly position.

3 is in the course of the final assembly first of the Cover 19 and the hood holder 1 existing unit its end facing away from the hood holder 1 to the mounting surface a door closer housing 26 is attached. It is with the preassembled hood holder 1 provided end of the cover hood 19 at an acute angle to the mounting plane of the door closer housing 26 pivoted aligned. Based on the in Fig. 3 position shown, the cover 19 by moving in Longitudinal direction via the latching receptacle 23 on the inner end face 21 with a bearing pin not recognizable in FIG. 3 on the associated one End face of the door closer housing 26 brought into engagement. Then the free end of the cover 19 with the pre-assembled hood holder 1 in the direction of arrow 27 3 pivoted against the mounting surface of the door closer housing 26. The latching tongues 13, 14 run during this pivoting movement first on the outer surface of the cylindrical door closer housing 26 on. As the swivel movement continues, they slide with them their ends in cylindrical cross section on the lateral surface of the Door closer housing 26 along. Because between those in cross section cylindrical ends of the locking tongues 13, 14 and the lateral surface of the door closer housing 26 is only a linear contact takes place, this sliding movement becomes a relatively small Opposing frictional resistance. Linked to the sliding movement is a swiveling movement of the Locking tongues 13, 14 in the direction of the respectively assigned leg surface 3, 4 of the hood holder 1. As soon as the free ends the locking tongues 13, 14 each the "highest" point of the cylindrical Have passed door closer housing 26, they pivot due to the effective spring force automatically in their example Back to the starting position shown in Fig. 1a. The support themselves Locking tongues 13, 14 on the part of the surface facing the mounting surface From the outer surface of the door closer housing 26. The cover housing 19 experiences a force application due to the spring back of the locking tongues 13, 14 towards the mounting surface of the door closer housing 26, which supports the sliding of the cover 19 becomes. This finally comes via the locking tongues 13, 14 impinges with its opening edge on the mounting surface of the door closer housing 26 to the system. The described assembly support In addition, effects result from all types of Door closer housings with a housing contour that tapers in the mounting direction.

In the final assembly position, in which the cover (19) is free of play is held supported, the edge-open cutout 25 encloses the hint in Fig. 3 and from the cover 19 upward emerging shaft of the door closer system shown. The U-shaped stop rib 11 engages around the one in FIG. 3 visible end face of the door closer housing 26 provided Lead and creates a positive connection between the hood holder 1 and the door closer housing 26.

Last but not least, as can be seen from FIG. 4, the Positioning arms 15, 16 for secure support of the cover hood 19 on the hood holder 1. In addition, the positioning arms 15, 16 a self-centering of cover 19 and Hood holder 1 relative to each other. Nevertheless, you can also without the positioning arms 15, 16 a functional hood holder realize.

For removal, the cover can be kept in the installed position 19 together with the hood holder attached to it in a form-fitting manner 1 in the direction of arrow 3 according to FIG. 4 from the door closer housing Pull off 26. On this occasion too, the Cross-section cylindrical ends of the locking tongues 13, 14 to reduce friction.

Latching tongues 13a, 14a of a hood holder design serving as retaining springs, the additional dismantling measures when removing the cover 19 make necessary, are indicated by dashed lines in Fig. 4. The locking tongues 13a, 14a are compared to the locking tongues 13, 14 at a larger angle to the horizontal inclined towards each other. As a result, the locking tongues 13a, 14a the relevant hood holder and thus also the cover holder the locking pin provided on the locking tongue is positively connected Cover 19 against being pulled off in the direction of the arrow B. To remove the cover 19 is therefore first with help an aid, for example a screwdriver, the Positive connection between the cover 19 and the hood holder to solve. For this purpose, it can be inserted into the catch 22 of the cover 19 engaging locking pin so far into that Push the hood back until it releases the cover 19. Now the cover 19 can be removed in the direction of arrow B. become. The hood holder remains on the door closer housing 26 supported on the locking tongues 13a, 14a, in its installed position and can be removed from the after removing the cover 19 Pull off the door closer housing 26 in its longitudinal direction. An unauthorized one Dismantling the cover 19, for example, on door closer systems in public buildings, is used to protect the system against vandalism by the described embodiment of the hood holder considerably more difficult.

Claims (12)

1. A cover holder (1) on covers (19) for cylindrical door closer housings (26), which is held in the installed position against the cover (19) and against the door closer housing (26) and has at least one retaining spring (13, 14; 13a, 14a) for supporting the cover (19) on the door closer housing (26), the cover (19) being mounted on the door closer housing (26) in a rotationally secure manner and the retaining spring(s) (13, 14; 13a, 14a) being locked on the door closer housing (26) in the installed position,
   characterised in
   that the cover holder (1) is a part that is separately mountable on the cover (19) and has, as retaining springs (13, 14; 13a, 14a), at least two resilient catch tongues (13, 14; 13a, 14a) which, supported in the installed position between the highest point of the cylindrical surface and on that portion of the cylindrical surface of the door closer housing (26) which faces the mounting surface of the door closer housing (26), at a distance from each other in the circumferential direction of the cylindrical surface, engage behind the cylindrical surface.
2. A cover holder according to claim 1 on covers (19) for door closer housings (26) arranged on a base, characterised in that the retaining spring(s) (13, 14; 13a, 14a) brace(s) the cover (19) against the base of the door closer housing (26).
3. A cover holder according to claim 1 or 2, characterised in that the retaining spring(s) (13, 14; 13a, 14a) support(s) the cover (19) under bias.
4. A cover holder according to any one of the preceding claims, characterised in that the retaining spring(s) (13, 14; 13a, 14a) is (are) constructed to be rounded, preferably with a cylindrical cross-section, at the ends acting on the door closer housing (26).
5. A cover holder according to any one of the preceding claims, characterised in that, in the installed position, the cover holder (1) is supported positively at a bearing surface (12) against an opposite surface of the door closer housing (26).
6. A cover holder according to any one of the preceding claims, characterised in that the cover holder (1) is supported on the cover (19) in planar contact.
7. A cover holder according to any one of the preceding claims, characterised in that the cover holder (1) is supported on the cover (19) via resilient positioning arms (15, 16).
8. A cover holder according to any one of the preceding claims, characterised in that the cover holder (1) is held against the cover (19) in a clamping manner.
9. A cover holder according to any one of the preceding claims, wherein the cover holder (1) has a catch projection (9) which projects beyond the door closer housing (26) in the longitudinal direction thereof and which is resilient in that direction, and is separably locked to the cover (19) at that catch projection (9) by means of a catch receiver (22) provided at the associated end face (20) of the cover (19), characterised in that the cover holder (1) supports the cover (19) which is locked to it on the door closer housing (26) via the retaining spring(s) (13a, 14a) in such a manner that it is locked against removal from the door closer housing (26).
10. A cover holder according to claim 9, characterised in that the cover holder (1) is constructed to be substantially U-shaped in cross-section, the bridge face (2) of the cover holder (1) being associated with one end face (20) of the cover (19) and with the corresponding end face of the door closer housing (26), and having, on the side towards the cover (19), a resilient catch tongue (8) provided with the catch projection (9) and, on the side towards the door closer housing (26), a stop rib (11) which is open in a U-shape and forms the bearing surface (12) for positive connection with the door closer housing (26), and the limb faces (3, 4) of the cover holder (1) overlapping the door closer housing (26) in the longitudinal direction thereof and each having, on the side towards the door closer housing (26), a respective one of the resilient catch tongues (13, 14; 13a, 14a) and, on the side towards the cover (19) and forming the planar-contact support of the cover (19), a respective clamping spring (17, 18) for making the clamping connection with the cover (19), and a respective resilient positioning arm (15, 16) projecting towards the cover (19).
11. A cover holder according to any one of the preceding claims, characterised in that the cover holder (1) is constructed symmetrically with respect to a central plane extending in the longitudinal direction of the door closer housing (26) perpendicular to the mounting plane thereof.
12. A cover holder according to any one of the preceding claims, characterised in that the cover holder (1) is constructed in the form of an injection-moulded plastics article.

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