WO2011160784A1 - Door operator and method for producing same - Google Patents

Abstract

The invention relates to a door operator, comprising a housing, in which a fluid- and/or spring-loaded piston is movably arranged and guided in a piston chamber, wherein the housing is sealed and closed at the end face thereof by a sealing element. According to the invention, a sealing element is designed as a domed cover, which closes a door closer housing in a sealing manner by means of plastic deformation.

Description

 The present invention relates to a door operator with a housing in which a fluidically and / or spring-loaded piston is arranged and guided displaceably in a piston chamber, wherein the housing is sealed and closed at the end by a closure element. The prior art discloses door operators, in which a screw plug is used, the front side closes the door operator. This screw plug has a groove in which a seal for sealing the piston chamber is inserted, wherein the screw plug is screwed due to an arranged thread in the housing of the door operator.

The prior art has the disadvantage that on the screw plug a groove for the required seal and a thread for screwing the screw plug must be mounted in the housing of the door operator, with a corresponding mating thread is to be attached to the housing of the door operator, which is expensive to manufacture is.

Another disadvantage of the known door operator is that during the assembly of the door operator of the operation of screwing the screw plug into the housing of the door operator must be taken a certain amount of time, which costs considerable installation costs in relation to an annual amount of door operators. It is therefore an object of the present invention to provide a closure element for a housing of a door operator, which a

CONFIRMATION COPY has simple structure, is inexpensive to manufacture and is easy to mount sealing.

This object is achieved on the basis of a door operator according to the preamble of claim 1 in conjunction with the characterizing features. Advantageous developments of the invention are specified in the dependent claims.

The invention is based on the idea that the closure of a door operator after the assembly of the required components by a lid which is mounted by means of a tool and a seal in a leak-free position in which the door operator remains unaffected in its function. The invention includes the technical teaching that a closure element is designed as a domed lid, which sealingly seals the housing of the door operator due to plastic deformation.

The inventive embodiment has the advantage that the closure of the housing of the door operator a geometrically simple and thus inexpensive component can be used.

It is also advantageous that the housing has an opening with a diameter which forms a cylindrical surface within the housing. For the closure of the lid are simple tools used, the lid is recessed on the housing and thus the closure of the door operator has no protruding portions on the door operator. It is also advantageous that the piston chamber, in which the piston is arranged, has a diameter which forms a cylindrical surface within the housing. Thus, a door operator required used derliche geometry for mounting the lid, the function of the door operator is ensured.

It is also advantageous that a circumferential groove for a seal is arranged at the transition of the opening to the piston chamber. Through the groove arranged a required seal is easy to install.

It is also advantageous that the diameter of the opening is larger than the diameter of the piston chamber. The lid is held in this way to the closure in position.

It is also advantageous that a circumferential surface is arranged at the transition of the groove to the piston chamber, which serves to support the lid. In this way, the lid can be easily inserted into the opening and rests on the rotating surface.

It is advantageous that the lid rests on the surface and at least partially protrudes with its edge after the plastic deformation in the groove and thereby deforms the seal. Due to the plastic deformation of the lid, the larger outer diameter of the lid extends into the groove, wherein the seal is sealingly deformed by the lid.

A further preferred embodiment is that the lid consists of a metallic material. In a door operator in operation, there are internal pressures which are to be permanently absorbed by the cover in order to ensure the leak-free operation of the door operator, which is ensured by a metallic material in conjunction with corresponding properties and dimensions of the lid. Another advantage is that the seal has different shapes, preferably an O-ring or a 4-edge seal. Thus, a low-cost seal can be used. It is also advantageous that the tool is at least partially insertable into the opening. As a result, the closure is sunk arranged on the housing of the door operator, which prevents protruding components on the housing of the door operator and is preferable for optical reasons.

The invention of a preferred embodiment will be further illustrated by the following figures and their descriptions.

Show it:

1 shows a schematic representation of the housing of a door operator with a tool for deforming the lid,

FIG. 2 shows a detailed view X from FIG. 1,

3 shows a schematic representation of the housing of a door operator, in which the tool has begun to deform the cover, FIG. 4 shows a detail view Y from FIG. 3, FIG.

FIG. 5 shows a schematic representation of the housing of a door operator, in which the tool has reached its end position and has plastically deformed the cover,

FIG. 6 shows a detail view Z from FIG. 5. In Figures 1 and 2, the end portion of the housing 40 of the door operator is shown. The housing 40 may be designed as a round, oval or rectangular hollow cylinder, in which a piston 20 is arranged and guided fluidly and / or spring-loaded. The piston chamber, in which the piston 20 is arranged, in this case has a diameter B. The housing 40 has an opening 50 with a diameter A at one end.

At the end of the housing 40, a circumferential groove 35 is incorporated in the wall of the housing 40 in the region of the opening 50. In this groove 35, a seal 30 is inserted. The diameter A of the opening 50 is greater than the diameter B of the piston chamber. As a result, an annular surface 45, which serves as a stop for a cover 10, is produced on the groove at the end face toward the opening 50.

To close the door closer housing, the cover 10 is placed in the opening 50 on the surface 45. The cover 10 is outwardly convex - ie toward the opening 50 - convex. The lid 10 is plastically deformed by a tool 25 such that the diameter of the lid 10 is increased and this with its edge at least partially immersed in the groove 35. In this case, the tool 25 is guided to the curved surface 15 of the lid 10 until it touches the lid 10. As an additional support of the lid 10, the piston 20 is positioned such that its end face is arranged in the region of the annular surface 45. As a result, the deformation process is supported, in which slipping of the cover 10 - by a quick turning over the lid curvature - is prevented, with the lid 10 can invest in the piston 20.

In FIGS. 3 and 4, the tool 25 has begun to exert its force F on the curved surface 15 of the cover 10, the edge of the cover 10 10 already partly extends into the groove 35 and thereby deforms the seal 30.

In Figures 5 and 6, the tool 25 has reached its end position and the lid 10 plastically deformed. The lid 10 may abut the piston 20, the lid 10 deforming the seal 30 such that the seal 30 in conjunction with the lid 10 has achieved a leak-free seal from the piston chamber, the housing 40 and the opening 50. Subsequently, the tool 25 is led out of the opening 50 and removed from the door closer.

In the closure of the housing 40, the required components of the door operator are first mounted in the existing housing 40 of the Türbetäti- gers, which are necessary for the function of the door operator. Finally, there is a frontal closure of the housing 40. The housing 40 has in the portion of the piston chamber a surface 45 which is arranged translationally movable through the groove 35 and the piston chamber in which the piston 20 and the opening 50, in which the cover 10th is used, is formed. In this case, the piston 20 is positioned with one of its end faces on the plane of the surface 45 and is held in this position. After the seal 30, preferably an O-ring, is inserted into the groove 35, the curved and thus preformed cover 10 is inserted through the opening 50 of the housing 40 up to the plane of the surface 45. The preformed lid 10 has a curved surface 15, wherein the lid 10 is placed on the surface 45 of the housing 40 such that the curved surface 15 protrudes at least partially in the direction of the housing 40. The preformed contour of the lid 10 is required to place the lid 10 through the opening 50 of the housing 40 on the surface 45 can, since the outer diameter of the domed lid 10 is smaller than the opening 50 of the housing 40. Subsequently, the curved surface 15 a tool 25 is supplied, at the tool 25 exerts a force F on the curved surface 15, which ensures that the lid 10 is plastically deformed. In this case, the tool 25 exerts up to an end position a force F on the cover 10, wherein the end position of the tool 25 is reached when the lid 10 is plastically deformed and the seal 30 has sealingly deformed in the groove 35, wherein the lid 10 can be supported on the piston 20. The tool 25 has an outer diameter which is designed such that the outer diameter can be passed through the opening 50 of the housing 40. In this case, the cover 10 extends at least partially into the groove 35, as due to the force of the tool 25, the outer diameter of the lid 10 is increased, said outer diameter is greater than the opening 50 of the housing 40. As a result, the lid 10 has plastically deformed wherein the tendency to return to the preformed contour is prevented. The enlargement of the outer diameter of the cover 10 in conjunction with the depth of the groove 35 has the result that the cover 10 deforms the seal 30 located in the groove 35, wherein the seal 30 and the cover 10 seal the piston chamber without leakage. In this position, the lid 10 is permanently arranged as a closure of the Türbetäti- gers, wherein a cost-effective cover 10 is used and the assembly takes little time.

This type of closure is of course also applicable to the side of the door operator on which the spring chamber of the door operator is arranged. Thus, the spring chamber of a door operator with a lid 10 in conjunction with a disposed within a corresponding groove 35 seal 30 is leak-proof seal and close. LIST OF REFERENCE NUMBERS

10 lids

 15 arched area

20 pistons

 25 tool

30 seal

35 groove

 40 housing

45 area

 50 opening

 A diameter

B diameter

Claims

claims 1. Door operator with a housing (40) in which a fluidically and / or spring-loaded piston (20) is displaceably arranged and guided in a piston chamber, wherein the housing (40) is sealed and closed at the end by a closure element, characterized in that the closure element is designed as a domed cover (10) which sealingly closes the housing (40) due to plastic deformation. 2. Door operator with a housing (40) according to claim 1, characterized in that the housing (40) has an opening (50) with a diameter (A). Door operator with a housing (40) according to claim 2, characterized in that the diameter (A) forms a cylindrical surface within the housing (40). Door operator with a housing (40) according to claim 1, characterized in that the piston chamber, in which the piston (20) is arranged, has a diameter (B). Door operator with a housing (40) according to claim 4, characterized in that the diameter (B) forms a cylindrical surface within the housing (40). Door operator with a housing (40) according to claim 2, characterized in that at the transition of the opening (50) to the piston chamber a circumferential groove (35) for a seal (30) is arranged. 7. door operator with a housing (40) according to claim 2 and 4, characterized in that the diameter (A) is greater than the diameter (B). Door operator with a housing (40) according to claims 6, characterized in that at the transition of the groove (35) to the piston chamber, a circumferential surface (45) is arranged, which serves to support the lid (10). 9. door operator with a housing (40) according to claim 1 and 8, characterized in that the cover (10) rests on the surface (45) and protrudes with its edge after the plastic deformation at least partially into the groove (35) and the Seal (30) deformed. 10. A method for closing the front of a housing of a door operator according to claims 1 to 9, characterized in that the curved lid (10) is placed on the surface (45),  - The piston (20) is positioned so that its end face in Area of the surface (45) is arranged,  a tool (25) plastically deforms the cover (10) so that its edge is at least partially immersed in the groove (35) and deforms a seal (30) arranged there. 11. The method according to claim 10, characterized in that the cover (10) consists of a metallic material. 12. The method according to claim 10, characterized in that the seal (30) has different shapes, preferably an O-ring or a 4-edge seal. A method according to claim 10, characterized in that the tool (25) in the opening (50) can be inserted.