EP1697609B1 - Floor spring - Google Patents

Abstract

The invention relates to a floor spring comprising a housing for receiving a closing mechanism, said housing being protected by a cover part in the vicinity of a closing shaft (10) that bears a door or similar. The aim of the invention is to provided a cover part for a floor spring, which can be used in a universal manner, irrespective of whether the floor spring has a floating shaft or a rigid shaft and whether the cover plate (12) is fixed to the cement body (14) or to the housing of the floor spring, which requires no pre-assembly on the part of the manufacturer and which facilitates a retroactive installation even in a mounted door. To achieve this, the cover part is configured in two parts and consists of a substantially U-shaped base part (1) and an insert (2) that can be introduced into said base part (1).

Description

The invention relates to a floor spring with a housing for receiving a closing mechanism, wherein the housing is covered by a cover member in the region of a door or the like bearing closer axis.

Such floor spring are well known. They have a housing which is surrounded by a cement box which can be inserted into a recessed recess in the ground. Towards the top, the entire cement box with the bottom door closer therein is covered by a cover plate, so that only the cover plate can be seen from the outside. Since the cover plate only after mounting a door or the like on the floor spring and also after z. B. the closing speed has been set at the bottom door closer, can be mounted, the cover plate must have a longitudinally extending slot on one end face, so that the cover plate can be mounted on the Schließerachse past the housing of the bottom door closer.

The cover plate can either be attached to the cement box or to the housing of the floor spring. Since it is necessary that the housing of the bottom door closer can be adjusted in the cement box in all four directions in the plane and in connection with the above-mentioned different mounting options of the cover plate on the cement box or on the housing, there are different sized slots in the cover plate.

If the cover plate attached to the housing of the bottom door closer, this leads together with the housing a possible adjustment of the Housing in the cement box off. Therefore, the slot must be so large that the cover plate can be mounted past the closer axle.

On the other hand, if the cover plate is mounted on the cement box, the housing performs a relative movement to the cover plate during an adjustment movement, since it is firmly connected to the cement box. Thus, the full adjustment of the housing can be guaranteed in this case, the slot must be increased by the additional adjustment, otherwise the closer can hit against the cover plate.

Furthermore, it is necessary that the slot is covered by one or more suitable cover components, so that the bottom door closer and in particular a seal surrounding the striker axis is protected from contamination.

In practice, one and the same floor spring is used with both a thru axle and a rigid axle, so that depending on the Achsausführung and attachment of the cover plate on the housing or the cement box different cover components are required for the same floor spring, resulting in an increased Expense in terms of production and storage leads.

In addition, some of these components are preassembled from the factory, as the installation on the part of the customer on site for various reasons has not been successful.

The DE 28 40 726 has a two-part cover plate for a bottom door closer according to the preamble of claim 1, which can be aligned by a loosely mounted anchor. The anchor has a slot whereby the anchor can be brought into the desired position before the cover plate is screwed to the aligned armature with two screws.

The object of the invention is therefore to design a cover, which can be used universally, regardless of whether the bottom door closer has a plug-in axis or a rigid axis and regardless of whether the cover plate is attached to the cement box or on the housing of the bottom door closer, which no pre-assembly on the part Manufacturer requires and which allows a subsequent installation even with already mounted door.

This object is achieved in a floor spring of the type mentioned by the features of claim 1. The cover component consists of an essentially U-shaped base part and an insert which can be latched into the base part, a fixation being created for use on the base part.

The inventive design a universally usable cover member is created, which can be used independently of the construction of the floor door closer, which requires no pre-assembly by the manufacturer and which allows installation even with already mounted door.

The subclaims represent further embodiments of the subject invention.

According to an advantageous development it is provided that the base part and the insert in the assembled state have a substantially rectangular outer contour. This allows a simple and cost-effective production of the two components and also ensures easy storage.

The fact that advantageously the base is substantially planar in the insert can be used, a cover is created, which requires little space when installed.

If, according to a preferred embodiment, the insert can be inserted into the base part such that a circular opening remains free for the passage of the closer axis, a plug-in axis or a rigid axis can be used as required.

Preferably, the U-shaped base is pushed with its open side onto the insert, so that the cover member can be easily and easily mounted around the striker.

Because the base is provided with its insert engageable inner edges with concave, semi-circular and longitudinally extending recesses, a simple but nevertheless good fixation capability for use on the base is provided.

The fixation is further improved in that the insert has at its outer edges laterally outwardly projecting wings, which engage in the recesses on the inner edges of the base.

The base part and the insert are advantageously provided on their surfaces facing the closer axis with a semicircular contour, the profile of which is designed as a sealing lip, which engages in a groove on the closer axis. Due to this configuration, a good protection against the ingress of dirt is guaranteed. The sealing lip may be formed in the manner of a radial shaft seal.

In particular, if according to a further advantageous embodiment, the sealing lip is directed obliquely upwards, results in the end of the sealing lip, a pocket into which the impurities can collect. Thus, the ingress of contaminants into the floor spring can be effectively prevented.

In order for a good fixation of the base and insert is ensured, the insert is provided in the rear region of its outer edges, each with a recess which is latched with one provided on the inner edges of the base latching lug.

In order to allow easy insertion of the base and insert, are advantageously provided on the base insertion chamfers.

According to a preferred embodiment, the insert and the base are provided at their ends facing away from the closer with predetermined breaking points. As a result, a simple adjustment of the length of the base and use of the local conditions is possible.

Advantageously, the insert has a smaller thickness than the base part. Due to this simple configuration, it is possible to clamp base and insert with a single screw, as a result of the thinner use this clamps the base when tightening the screw.

The cover member according to the invention is preferably used as an injection molded part made of plastic, for. POM. This ensures a simple and cost-effective production, even in large quantities.

Further features and advantages of the cover component according to the invention will become apparent from the following description of a preferred embodiment.

Figur 1:

Eine Draufsicht auf das Grundteil;

Figur 2:

eine Seitenansicht des Grundteils;

Figur 3:

einen Schnitt durch das Grundteil entlang der Linie A-A in Figur 1;

Figur 4:

eine Rückansicht des Grundteiles;

Figur 5:

das Detail Z aus Figur 3;

Figur 6:

das Detail W aus Figur 4;

Figur 7:

eine Ansicht des Grundteiles von unten;

Figur 8:

das Detail Y aus Figur 7;

Figur 9:

eine Draufsicht auf den Einsatz;

Figur 10:

eine Ansicht des Einsatzes von unten;

Figur 11:

eine Ansicht des Einsatzes von vorne;

Figur 12:

einen Querschnitt durch den Einsatz entlang der Linie B-B in Figur 9;

Figur 13:

das Detail X aus Figur 11;

Figur 14:

eine Draufsicht auf das Grundteil mit eingefügtem Einsatz von oben;

Figur 15:

eine Ansicht des Grundteiles mit eingefügtem Einsatz von hinten;

Figur 16:

eine Draufsicht auf einen Bodentürschließer, bei dem Grundteil, Einsatz und Deckplatte montiert sind;

Figur 17-20:

verschiedene Stadien der Montage von Grundteil, Einsatz und Deckplatte.

Show it:

FIG. 1:

A plan view of the base;

FIG. 2:

a side view of the base;

FIG. 3:

a section through the base along the line AA in FIG. 1 ;

FIG. 4:

a rear view of the base;

FIG. 5:

the detail Z out FIG. 3 ;

FIG. 6:

the detail W off FIG. 4 ;

FIG. 7:

a view of the base from below;

FIG. 8:

the detail Y off FIG. 7 ;

FIG. 9:

a plan view of the insert;

FIG. 10:

a view of the insert from below;

FIG. 11:

a view of the insert from the front;

FIG. 12:

a cross section through the insert along the line BB in FIG. 9 ;

FIG. 13:

the detail X out FIG. 11 ;

FIG. 14:

a plan view of the base with inserted insert from above;

FIG. 15:

a view of the base with insert inserted from behind;

FIG. 16:

a plan view of a bottom door closer, are mounted in the base, insert and cover plate;

Figure 17-20:

various stages of assembly of base, insert and cover plate.

A cover member consists of a base 1 and an insert 2. The base 1 is shown in various views in Figures 1 to 8, while the insert 2 in the FIGS. 9 to 13 shown in different views.

The basic part 1 will first be described below. The base 1 is for example by injection molding of plastic, z. POM. It is designed as a substantially flat plate with an elongate recess open on one side, so that a substantially U-shaped form results in the plan view. At the inner edges of the recess, the base part 1 is provided in each case with concave semicircular recesses 3 extending in the longitudinal direction of the recess. The end face of the recess is closed by a semicircular contour 4 in plan view. The contour 4 is provided with an inwardly directed sealing lip 5, which is directed obliquely upwards (see. FIG. 5 ). The sealing lip 5, which may be formed in profile as a radial shaft seal, engages in a groove, not shown, a closer axis 10 of the bottom door closer, thus preventing the ingress of contaminants. At the inner edges of the recess in the base part 1 a locking lug 8 are provided in the rear area on each side. In addition, insertion chamfers 11 are arranged on the inner edges of the recess, which facilitate the assembly of base 1 and insert 2. For length adjustment of the base 1 to the respective conditions, the base 1 is provided at its free ends with predetermined breaking points 16, which allow a simple reduction of the legs of the base 1.

In the FIGS. 9 to 13 is the insertable into the base 1 insert 2 shown. Like the base part 1, it consists of a plastic injection-molded part, z. B. from POM, and has a substantially rectangular shape with a semicircular contour 4a on a narrow side. At its outer edges of the insert 2 is provided with outwardly projecting wings 6, which are engageable with the recesses 3 at the inner edges of the base part 1 in engagement. The wings 6 have a contour such that they fit into the recesses 3. By the interaction of the recesses 3 on the base 1 and the wing 6 on the insert 2, a good fixation of the two parts can be achieved. The semicircular contour 4a on the narrow side of the insert 2 forms a sealing lip 5a and corresponds in shape to the contour 4 of the sealing lip 5 on the base 1. In the area of the wings 6, a recess 7 is provided in an end region of the insert 1, which is for latching between the base 1 and the insert 2 with the locking lugs 8 on the base 1 can be brought into engagement and thus prevent mutual displacement of the two parts. In addition, 2 predetermined breaking points 16 a are provided on the insert to - to allow for length adjustment to the local conditions - as in the base 1.

In the FIGS. 14 and 15 the cover component consisting of base part 1 and insert 2 is shown in the assembled state. The depressions 3 on the base part 1 are in engagement with the wings 6 on the insert 2 and the semicircular contours 4 and 4a leave open a region for the passage of the closer axis 10. Out FIG. 15 can also be seen that the insert 2 has a lower height than the base 1, so that there is a height difference h, the meaning below in connection with the FIGS. 17 to 20 will be explained.

FIG. 16 shows a plan view of the fully assembled floor spring, with the door has been omitted for clarity. The - not visible - floor spring is covered with a cover plate 12 and extends with its closing axis 10 through the base of the first and insert 2 existing cover component. The insert 2 of the cover member is fixed with a screw 9 to the housing of the bottom door closer and clamps due to the above-mentioned height difference h between the base 1 and the insert 2, the entire cover component firmly.

In connection with the FIGS. 17 to 20 Now, the installation of the cover member will be explained. When the cover member is attached, a closer housing 15 of the floor spring closer is mounted and aligned in a cement box 14 in the floor.

First, the insert 2, as in FIG. 17 shown, for. B. obliquely from the top right, pushed to the closer axis 10 and then pivoted arcuately to the left, as indicated by the arrow in FIG. 17 is indicated until the insert 2 is aligned parallel to the closer housing 15. Subsequently, the insert 2 is pre-fixed with the screw 9 to the closer housing 15. The screw 9 is not tightened yet, ie the insert 2 can still be moved and moved in height. Now, the base 1 is pushed onto the insert 2, wherein the recesses 3 engage with the wings 6 in engagement. At the end of the insertion movement snap lugs 8 on the base 1 in recesses 7 on the insert 2 and thus fix base 1 and insert 2 into one unit. After the engagement of the base 1 on the insert 2, the screw 9 is tightened and thus the base 1 is clamped on the insert 2. A defined clamping of the cover component is achieved by the height difference h between the base part 1 and the insert 2. Because the insert 2 has a lower height than the base 1, the insert 2 is pressed down when tightening the screw 9 and thus simultaneously clamps the base 1 fixed. After tightening the screw 9, the cover plate 12 is pushed under the cover member and fastened with fastening screws 13 on the cement box 14 and the closer housing 15.

As can be seen from the above description, a trouble-free installation is possible even with already inserted door. Likewise, the universal application of the cover member according to the invention is given both with through axles and rigid axles and with a mounting of the cover plate 12 on the cement box 14 or on the closer housing 15.

LIST OF REFERENCE NUMBERS

1

base

2

commitment

3

wells

4, 4a

semicircular contour

5, 5a

sealing lip

6

wing

7

recess

8th

locking lug

9

screw

10

closing shaft

11

chamfer

12

cover plate

13

fixing screw

14

cement box

15

closer housing

16, 16a

Predetermined breaking points

H

Height difference

Claims (11)

1. A floor spring having a housing for accommodating a closing mechanism, the housing, in the region of a closing shaft supporting a door or the like, being covered by a covering component, the covering component being formed in two parts and consisting of an essentially U-shaped basic component (1) and of an insert (2) insertable into the basic component (1), characterized in that the basic component (1), at the inside edges thereof, which get into contact with the insert (2), is provided with concave-shaped semicircular recesses (3) extending in the longitudinal direction, the insert (2), at the outside edges thereof, having lateral wings (6) extending to the outside, which wings engage into the recesses (3) at the inside edges of the basic component (1), the insert (2), in the rear portion of its outside edges, being provided with respectively one opening (7), which is latchable with respectively one latching projection (8) provided at the inside edges of the basic component (1).
2. A floor spring according to claim 1, characterized in that the basic component (1) and the insert (2) essentially present a rectangular peripheral contour in the assembled condition.
3. A floor spring according to the preceding claims, characterized in that the basic component (1) essentially is evenly insertable into the insert (2).
4. A floor spring according to the preceding claims, characterized in that the insert (2) is insertable into the basic component (1) such that a circular opening remains for the passage of the closing shaft (10).
5. A floor spring according to the preceding claims, characterized in that the U-shaped basic component (1), with the open side thereof, can be slid onto the insert (2).
6. A floor spring according to the preceding claims, characterized in that the basic component (1) and the insert (2), at the regions thereof oriented towards the closing shaft (10), are provided with a semicircular contour (4, 4a), the profile thereof being formed as a sealing lip (5, 5a) engaging into a groove at the closing shaft (10).
7. A floor spring according to claim 6, characterized in that the sealing lip (5, 5a) is inclined towards the top.
8. A floor spring according to the preceding claims, characterized in that the basic component (1) is provided with feeding chamfers (11).
9. A floor spring according to one or more of the preceding claims, characterized in that the insert (2) and the basic component (1), at the ends thereof turned away from the closing shaft (10), have predetermined breaking points (16, 16a).
10. A floor spring according to one or more of the preceding claims, characterized in that the insert (2) has a smaller thickness than the basic component (1).
11. A floor spring according to one or more of the preceding claims, characterized in that the base unit (1) and insert (2) are manufactured from plastic material, for example from POM.

Images