DE102017124034A1 - Closing device for closing a door or window sash - Google Patents

Abstract

A closing device (10) for closing a door or window wing, having a spring piston (16) acted upon by a spring (14) for applying a closing force to a closer shaft (18) and a damping piston (22) for damping the movement of the closer shaft (18 ), with a view to enabling a cost-effective provision of a closing device with simple structural means, is configured and developed such that the damping piston (22) or the spring piston (16) has a piston body (32, 62) made of plastic or plastic liquid state is urgeformt and monolithic.

Description

The invention relates to a closing device for closing a door or window wing, with a spring piston acted upon by a spring for applying a closing force on a closer shaft and a damping piston for damping the movement of the closer shaft.

Closing devices for closing a door or window wing with a spring piston, a closer shaft and a damping piston or components of such a closing device are known from the prior art, for example. From DE 102 59 237 A1 or EP 2 372 065 B1 , These provide that a piston is formed by a shape-stabilizing insert, which is coated with a cover layer made of plastic. As a result, sufficiently high forces can be transmitted, with advantageous friction properties of the plastic being maintained.

However, it is problematic that the production cost is high due to the regular machining production of an insert and the subsequent coating of the insert with plastic. The manufacturing cost leads to high costs of such closing devices.

The invention has for its object to provide a simple way of constructing a cost-effective provision of a locking device.

The invention solves this problem by a locking device with the features of claim 1. Thereafter, the closing device is characterized in that the damping piston or the spring piston has a piston body which is urgeformt from the plastic or liquid state and formed monolithic.

As a result, the structure of the damping piston or of the spring piston and thus of the closing device as a whole is considerably simplified, since the number and the complexity of the manufacturing steps are reduced. Thus, the piston body is formed monolithically by way of primary forming from the plastic or liquid state. This contributes to a cost-effective design of the damping piston or the spring piston and the closing device in total. The piston body is in particular formed completely from a uniform or identical material (monolithic configuration), so that the piston body is free of inserts (insert-free design of the piston body).

The closing device can be a door drive for actuating a door or window sash or a door closer for closing a door or window sash. The damping piston is in particular formed separately from the spring piston.

In the context of a preferred embodiment, the spring piston and the damping piston may each have a piston body, which is formed from the plastic or liquid state urgeformt and monolithic. By also the piston body of the spring piston and the damping piston are monolithically formed in the course of the primary forming from the plastic or liquid state, the structure of the damping piston and the spring piston and thus the closure device are again simplified overall. Alternatively, it is conceivable that the spring piston is designed conventionally machined, for example. Steel. Already hereby, an advantageous closing device can be realized.

Advantageously, the piston body of the damping piston and / or the piston body of the spring piston may be formed by injection molding or die casting. This makes it possible to produce the spring piston and / or the damping piston with simple design means in sufficient stability. Concretely, the damping piston and / or the spring piston in embodiment by injection molding of plastic, in particular polyoxymethylene (POM) may be formed. When designed by die casting, the spring piston and / or the damping piston may be formed of non-ferrous metal, in particular of a brass, aluminum or zinc alloy (zinc die-casting process).

Conveniently, the damping piston may have a roller for engagement with the closer shaft, wherein the roller axle portions and relative to the Achsabschnitten radially expanded and axially spaced apart roller sections, wherein the roller is mounted by means of the axle sections on the damping piston. This creates a sufficiently stable bearing of the roller (damping roller) on the damping piston. In this case, the roller over the axis sections over a large area on formed on the damping piston trough-shaped bearing surfaces, preferably wherein the number of shaft sections coincides with the number of bearing surfaces. The bearing surfaces are formed such that they define a vertical circular cylinder, in particular by an angle of 180 ° to 190 °. As a result, the roller can be inserted, in particular clipped, into the damping piston. Falling out of the role is thus largely avoided, which facilitates the assembly.

Concretely, the damping piston may have an overload valve, a check valve, a sealing ring and / or an O-ring. As a result, can be fulfilled by the damping piston other functions. The damping piston may have on its outer surface (lateral surface) a preferably circumferentially formed groove in which the sealing ring and the O-ring are arranged. The sealing ring can surround the O-ring radially outward.

The damping piston may have a first, in the installed state remote from the closer shaft portion and a second, partially radially over the circumference tapered portion (facing the closer shaft). In the first section, the overload valve, the check valve, the sealing ring and / or the O-ring may be arranged. In the second section, the damping roller may be arranged. In particular, in one embodiment of the damping piston made of plastic, the outer surface (lateral surface) of the damping piston form a running surface, which runs in the housing of the closing device on the inner wall (cylindrical bore). The sealing ring serves only to seal the damping-side pressure chamber with respect to the pressure-free space in which the closer shaft is located.

In a preferred embodiment, the spring piston may have a roller for engagement with the closer shaft, wherein the roller is mounted by means of axle sections directly or by means of a bearing bush on the spring piston. Thus, a stable storage of the role of the spring piston on the spring piston can be realized. With a bearing bush, the bearing surface on the piston can be increased. This is particularly advantageous in a design of the spring piston made of plastic. The one or more bushings may be formed of metal, for example. Of aluminum or brass, or of a high pressure resistant plastic, for example. Of polyimides.

Advantageously, the spring piston may be formed without grooves on its outer surface (lateral surface). This contributes to a structurally simple and stable design of the spring piston. Thus, in particular when designing the spring piston made of plastic, a large-area running surface can be provided, wherein the structure of the spring piston is not weakened.

Alternatively, the spring piston on its outer surface (lateral surface) in particular circumferential grooves for receiving a sliding ring, a sealing ring or an O-ring and / or the spring piston may have a combination valve (combination of overload and check valve). The rings can be arranged in the respective groove and take over a guiding and / or sealing function. To provide a sufficient guide function is conceivable that two axially spaced sliding rings are arranged in the corresponding grooves on the spring piston.

Within the scope of a preferred embodiment, the spring piston may have axially projecting foot sections at its end which is in the installed state of the closer shaft and / or optionally the damping piston may have foot receiving sections for receiving the foot sections of the spring piston at its end facing the normally open state in the installed state. As a result, the closer shaft can be bridged, so that in particular when closing the door or window sash a direct power transmission can take place from the spring piston to the damping piston. By such a bridging of the closer shaft by means of the foot portions, the load of the damping piston, in particular at the bearing surfaces, by the acting on the damping piston roller for engagement with the closer shaft (damping piston roller) can be reduced. The foot sections extend in the axial direction away from the spring piston.

Advantageously, the outer surface (lateral surface) of the spring piston can be continued through the foot sections. As a result, the contour of the spring piston continues without weakening. In particular, when the outer surface forms a running in the closing device tread, for example. In one embodiment of the spring piston made of plastic, this contributes to an optimized guidance of the spring piston.

• 1 eine erste Ausführungsform einer Schließvorrichtung in einer Seitenansicht und zwei Schnittansichten;
• 2 den unmontierten Dämpfungskolben der Schließvorrichtung aus 1 in mehreren, teilweise geschnittenen Ansichten;
• 3 den Dämpfungskolben aus 2 im einbaufertigen Zustand in mehreren, teilweise geschnittenen Ansichten;
• 4 den unmontierten Federkolben der Schließvorrichtung aus 1 in mehreren, teilweise geschnittenen Ansichten;
• 5 den Federkolben aus 4 im einbaufertigen Zustand in mehreren, teilweise geschnittenen Ansichten;
• 6 eine weitere Ausführungsform einer Schließvorrichtung in einer Seitenansicht und Zweischnittansichten;
• 7 den unmontierten Federkolben der Schließvorrichtung aus 6 in mehreren, teilweise geschnittenen Ansichten; und
• 8 den Federkolben aus 7 im einbaufertigen Zustand in mehreren, teilweise geschnittenen Ansichten.

The invention will be explained in more detail below with reference to the figures, wherein identical or functionally identical elements are optionally provided only once with reference numerals. Show it:

• 1 a first embodiment of a closing device in a side view and two sectional views;
• 2 the unmounted damping piston of the closing device 1 in several, partly sectional views;
• 3 the damping piston 2 in ready-to-install state in several, partly sectional views;
• 4 the unmounted spring piston of the closing device 1 in several, partly sectional views;
• 5 the spring piston off 4 in ready-to-install state in several, partly sectional views;
• 6 a further embodiment of a closing device in a side view and two-sectional views;
• 7 the unmounted spring piston of the closing device 6 in several, partly sectional views; and
• 8th the spring piston off 7 in ready-to-install state in several, partially cut views.

1 shows a locking device, in total with the reference numeral 10 is designated. At the closing device 10 it is a door closer for closing a door or window sash. The door or window sash can be displaced by means of the door closer from a completely or partially open position into the closed position, in particular pivoted.

The locking device 10 has a housing 12 in which the components of the locking device 10 are arranged. The locking device 10 has one with a spring 14 acted upon spring piston 16 on, which has a closing force on the closer shaft 18 over the cam 19 exercises. The closer shaft 18 points out of the case 12 outstanding connection sections 20 on, which can be connected to a linkage for driving the door or window sash (not shown). The closer shaft 18 is rotatable in the housing 12 the locking device 10 stored.

The locking device 10 also has a separate damping piston 22 for damping the movement of the closer shaft 12 on. The damping piston 22 ensures that the closer shaft 18 when acted upon by spring 14 and spring piston 16 not abrupt, but rotated at reduced speed, so that the door or window sash is driven at a constant speed.

At the of the closer shaft 18 opposite side of the spring piston 16 is at a realized opening damping (door or window sash is damped during the opening movement) a pressure chamber 24 educated. The closer shaft 18 is located between spring piston 16 and damping pistons 22 in a pressure-free room 26 (Tank space). At the of the closer shaft 18 opposite side of the damping piston 22 there is a pressure room 28 , which in a closing movement, the rotation of the closer shaft 18 attenuates. The housing 12 the locking device 10 is at each end by closure pieces 30 locked.

The damping piston 22 has a piston body 32 which is formed from the plastic or liquid state and formed monolithic (see 2 and 3 ). The piston body 32 is made of a uniform material and free of inserts (insert-free). The piston body 32 of the damping piston 22 is formed in particular by injection molding and is preferably made of plastic, in particular polyoxymethylene (POM).

At the damping piston 22 is on its outer surface 60 a circumferential groove 34 educated. The piston body 32 has a first section 36 on, in the installed state of the closer shaft 18 turned away. In addition, the piston body 32 a second section 38 on, the sections over the circumference of the piston body 32 is radially tapered.

Next are at the damping piston 22 three trough-shaped bearing surfaces 40 designed to support a roll 42 for engagement with the closer shaft 18 serve. The bearing surfaces 40 are formed such that they define a vertical circular cylinder, in particular by an angle of 180 ° to 190 °. This can be the role 42 in the damping piston 22 be clipped. The bearing surfaces 40 are at the end of the second section 38 of the damping piston 22 open. Between the bearing surfaces 40 There are recessed pockets 44 , The damping piston 22 also has foot receiving sections 46 on, for receiving foot sections of the spring piston 16 serve (in 1 , middle view recognizable and described below).

As already indicated, the damping piston has 22 a role 42 for engagement with the closer shaft 18 on, with the role 42 axle sections 48 and relative to the axle sections 48 radially extended and axially spaced roller sections 50 has (see 3 ). The axle sections 48 are on the trough-shaped bearing surfaces 40 stored. The roll sections 50 are in the pockets 44 received and arrive in the installed state with the cam 19 in contact.

The damping piston 22 has an overload valve 52 and a check valve 54 on. There is also a sealing ring 56 and an O-ring 58 provided in the circumferential groove 34 are arranged. The sealing ring surrounds 56 the O-ring 58 radially outward. The outer surface 60 (Lateral surface) of the damping piston 22 serves as a tread over which the damping piston 22 on the inner wall 13 of the housing 12 is running (see 1 ).

The spring piston 16 has a piston body 62 which is formed from the plastic or liquid state and formed monolithic (see 4 and 5 ). The piston body 62 is made of a uniform material and free from Inserts (insert-free). The piston body 62 of the spring piston 16 is formed in particular by die casting and preferably consists of a non-ferrous metal alloy, in particular a zinc alloy (zinc die-casting process).

The spring piston 16 has a passage 64 on, which is preferably designed as a bore and for supporting a roll 66 , in particular of axle sections 68 a role 66 , for engagement with the closer shaft 18 serves. The spring piston 16 indicates on its outer surface 70 several grooves 72 . 74 and 76 on. In addition, the spring piston points 16 at its in the installed state of the closer shaft 18 facing end four axially projecting foot sections 78 in the installed state in the Fußaufnahmeabschnitte 46 of the damping piston 22 intervene (see 1 middle illustration). The foot sections 78 bridge the closer shaft 18 , allowing a direct power transmission from the spring piston 16 on the damping piston 22 can take place (reduced load of the damping piston on the bearing surfaces for the damping piston roller as described above). The outer surface 70 (Lateral surface) of the spring piston 16 gets through the foot sections 78 continued in sections.

The spring piston 16 has a role 66 for engagement with the closer shaft 18 (Cam 19 ), where the role 66 directly on the spring piston 16 is stored and that at the passage 64 or the bore 64 (please refer 4 and 5 ). The role 66 is designed as a spring roller with needles. The axle sections 68 are in the present embodiment as a particular continuous rolling pin 68 educated.

The spring piston 16 has two slip rings 80 on, one of which is in the groove 72 and one in the groove 76 is arranged. The slip rings 80 serve to guide the spring piston 16 in the case 12 the locking device and are with the inner wall 13 of the housing 12 in contact. The spring piston 16 also has a sealing ring 82 and an O-ring 84 on that in the groove 74 are arranged. The sealing ring 82 surrounds the O-ring 84 radially outward. In addition, the spring piston points 16 a combination valve 86 on (combination of overload and non-return valve).

In the described embodiment, the locking device 10 an injection-molded, in particular made of plastic, for example. POM, formed damping piston 22 and a die-cast, in particular of a non-ferrous metal alloy, for example. A zinc alloy, formed spring piston 16 on. In embodiments not shown, the spring piston 16 also conventional, in particular machined, be formed and, for example, consist of steel.

6 shows a further embodiment of a closure device 10 , which is largely the closing device described above 10 equivalent. In particular, the damping piston 22 as described above formed (injection-molded plastic design). To avoid repetition, reference is therefore made to the above statements.

The spring piston 16 has a piston body 62 which is formed from the plastic or liquid state and formed monolithic (see 7 and 8th ). The piston body 62 is made of a uniform material and free of inserts (insert-free). Notwithstanding the above embodiment, the piston body 62 of the spring piston 16 formed by injection molding and consists of plastic, in particular POM (see 7 and 8th ).

The spring piston 16 is on its outer surface 70 (Lateral surface) formed groove-free. The outer surface 70 forms a tread, which in the installed state in the housing 12 the locking device 10 runs and with the inner wall 13 is in contact. In addition, the spring piston points 16 a spring engaging portion 88 on, with the spring piston 16 in the spring 14 (Compression spring 14 ) (see 6 ).

The spring piston 16 indicates at its in the installed state of the closer shaft 18 facing end four axially projecting foot sections 78 in the installed state in the Fußaufnahmeabschnitte 46 of the damping piston 22 intervene (see 6 middle illustration). The foot sections 78 bridge the closer shaft 18 , allowing a direct power transmission from the spring piston 16 on the damping piston 22 can take place (reduced load of the damping piston on the bearing surfaces for the damping piston roller as described above). The outer surface 70 (Lateral surface) of the spring piston 16 gets through the foot sections 78 continued in sections.

The spring piston 16 has trough-shaped bearing surfaces 90 and a bag between them 92 on which to take a role 94 for engagement with the closer shaft 18 serve (see 7 and 8th ). This is how the spring piston points 16 a role 94 for engagement with the closer shaft 18 on, with the role 94 by means of axle sections 96 by means of bearing bushes 98 at the bearing surfaces 90 of the spring piston 16 is stored. The role 94 also has a roller section 100 in the bag 92 is included (see 8th ). The roll section 100 passes over the cam 19 with the closer shaft 18 in contact.

In this embodiment, the locking device 10 an injection molded, in particular made of plastic, for example. POM, trained damping piston 22 and spring piston 16 on. In embodiments not shown, the locking device 10 a die-cast, in particular of a non-ferrous metal alloy, for example. A zinc alloy, formed spring piston 16 and damping pistons 22 respectively.

In summary, by primitive design of at least the damping piston 22 , preferably the damping piston 22 and the spring piston 16 , With simple design means an inexpensive and reliable provision of a locking device 10 allows.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 10259237 A1 [0002]
• EP 2372065 B1 [0002]

Claims (10)

Closing device (10) for closing a door or window wing, with a spring piston (16) acted upon by a spring (14) for applying a closing force to a closer shaft (18) and a damping piston (22) for damping the movement of the closer shaft (18). , characterized in that the damping piston (22) or the spring piston (16) has a piston body (32, 62) which is formed from the plastic or liquid state urgeformt and monolithic. Locking device (10) after Claim 1 , characterized in that the damping piston (22) and the spring piston (16) each have a piston body (32, 62) which is formed from the plastic or liquid state urgeformt and monolithic. Locking device (10) after Claim 1 or 2 , characterized in that the piston body (32) of the damping piston (22) and / or the piston body (62) of the spring piston (16) is / are formed by injection molding or die casting. Locking device (10) according to one of the preceding claims, characterized in that the damping piston (22) has a roller (42) for engagement with the closer shaft (18), the roller (42) having shaft sections (48) and relative to the axle sections (48). 48) has radially expanded and axially spaced roller sections (50), wherein the roller (42) by means of the axle sections (48) on the damping piston (22) is mounted. Closing device (10) according to one of the preceding claims, characterized in that the damping piston (22) has an overload valve (52), a check valve (54), a sealing ring (56) and / or an O-ring (58). Closing device (10) according to one of the preceding claims, characterized in that the spring piston (16) has a roller (66, 94) for engagement with the closer shaft (18), wherein the roller (66, 94) by means of axle sections (68, 96 ) is mounted directly or by means of a bearing bush (98) on the spring piston (16). Closing device (10) according to one of the preceding claims, characterized in that the spring piston (16) on its outer surface (70) is formed groove-free. Closing device (10) according to one of the preceding claims, characterized in that the spring piston (16) on its outer surface (70) in particular circumferential grooves (72, 74, 76) for receiving a sliding ring (80), a sealing ring (82) or a O-rings (84) and / or that the spring piston (16) has a combination valve (86). Closing device (10) according to one of the preceding claims, characterized in that the spring piston (16) of the closer shaft (18) facing axially projecting foot portions (78) and / or that the damping piston (22) of the closer shaft (18) facing Fußaufnahmeabschnitte (46 ) for receiving the foot portions (78). Locking device (10) after Claim 9 , characterized in that the outer surface (70) of the spring piston (16) is continued by the foot portions (78).

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