EP3205794B1 - Handle system and method of assembly - Google Patents

Description

The present invention relates to a handle system for mounting on a door bore having a door bore and a method for mounting a handle system.

Known door handle systems have a first handle and a second handle, which are connected to one another via a square pin. In a pre-assembly state, a first end portion of the square pin may already be attached to the first handle. In any case, the first end portion is configured so that it can be fastened to the first handle. To store the first handle on the door, a combination of shield and base is provided. Accordingly, a second shield / base combination is provided for storage of the second handle. The shield / base combinations are designed to define a passage that can receive the square pin.

For mounting such handle systems, the shield / base combinations are placed on opposite sides of the door on the outside of the door and screwed, for example, to the door. Through the passages of the bolted to the door plate / base combinations then the square pin can be performed, the first end portion can be attached to the first handle before the insertion of the square pin in the passages of the shield / base combinations. Finally, the second handle is attached to the second end portion of the square pin.

For screwing the shield / base combinations to the door, the door is usually provided with suitably positioned boreholes. The formation of these holes represents an additional step, which still allows only a small tolerance with regard to the positioning of the holes.

For example, incorrectly positioned drill holes can lead to the shield / base unit combinations not being able to be screwed on or, after screwing, the passages provided in the panel / base unit combinations are not arranged concentrically to one another and / or to a locknut located in the door bore, whereby the subsequent assembly of the handles is difficult or even impossible.

One way to forego boreholes is in the GB 973 598 A demonstrated. Here, the handles are pressed by means of spiked rosettes directly into the surface of the door.

It is an object of the invention to provide a handle system which is easier to assemble.

This object is achieved by a handle system with the features of claim 1 and in particular by the fact that a first bearing bush for supporting the first handle and a second bearing bush for supporting the second handle is provided, wherein the bearing bushes each define a square pin receiving passage, at least one of the bearing bushes can be pressed into the door bore of the door, the square pin is provided in a first end portion remote from the second end portion with a thread and a threaded nut is provided which can be screwed onto the thread, that pressed at least one bearing bush in the door bore becomes.

Due to the pressing of the at least one bearing bush can be dispensed according to the invention on a screwing of the bearing bushes on the door and thus on an accurate positioning of necessary drill holes, whereby the assembly of the handle system is considerably simplified.

In addition, the press-fitting of the bushings is also advantageous compared to a hammering of the bearing bushes in the door bore, since when driving the bushings there is a risk that the door will be damaged. In addition, when turning the bushings can not readily ensure that the chosen bearing bushes are arranged concentrically to the lock nut, which can make the mounting of the handles difficult or even impossible.

At least one of the bearing bushes is formed by a piece of pipe, at its door-facing end a radially projecting collar is formed, which rests in the mounted state on an outer side of the door. The collar prevents the bearing bush from penetrating too far into the door bore when being pressed in.

Furthermore, a plurality of webs are provided on an outer circumferential surface of the pipe section. The webs allow a concentric alignment of locknut and bushings even if the door bore on opposite outer sides of the door has not concentric and / or non-congruent outlines by the bushings guided by the stuck in the lock nut square pin regardless of the door bore concentric to the Locknut pressed into the door.

Another object of the invention is a method in which the attached to the first handle square pin is guided with its free second end portion first, first through the first bearing bush, then through the door bore of the door and then through the second bearing bush. Then the nut is Screwed onto the second end portion and pressed by the threaded nut at least one of the two bushings in the door bore.

By the method according to the invention, the advantages described above can be achieved accordingly.

Advantageous embodiments of the invention are described in the subclaims, the description and the drawings.

In one embodiment, the thread is a trapezoidal thread. Due to the formation of the thread as a trapezoidal thread of the square pin can be provided while maintaining its angular basic shape with a thread and still a non-rotating positive connection of handle and square pin can be realized.

Preferably, the threaded nut has a maximum outer diameter which is greater than an inner diameter of the passage of the second bearing bush. This ensures that when the threaded nut is screwed onto the thread, a force transmission takes place on the second bearing bush and the second bearing bush is, as it were, pressed into the door bore by the threaded nut. In this case, the press-fitting through the threaded nut helps to prevent damage to the door, in particular the risk is minimized that cracks or flaking occur on the surface of the door upon penetration of the bearing bush in the door bore.

According to a particularly preferred embodiment, the threaded nut has, on its side facing the second bearing bush, a cylindrical projection whose cross-section is adapted to the cross section of the passage of the second bearing bush or of a plain bearing accommodated therein. The cylindrical shoulder ensures automatic centering of bearing bush and Locknut when pressed into the door bore, which facilitates the assembly of the handles even further.

According to one embodiment, the outer circumferential surface of the pipe section comprises at least three webs, preferably at least five webs.

Advantageously, at least one of the barbs, corrugations or teeth is provided on a radially outer back of at least one of the webs. After pressing the bushing, the barb, the corrugation or teeth can engage in the material of the door, thereby falling out of the mounted bushing from the door bore is additionally difficult. Alternatively or additionally, the radially outer back of at least one of the webs may be formed sharp-edged, in order to favor a cutting of the web into the material of the door.

According to a further embodiment, the webs extend at least approximately parallel to a longitudinal central axis of the pipe section. This allows a particularly easy press-fitting of the bearing bush in the door bore.

According to another embodiment, the webs extend transversely to a longitudinal central axis of the pipe section, for example at an angle of 2 to 80 °, in particular at an angle of 5 to 50 °. Transverse webs allow a particularly good backup of the bearing bush in the door bore. Thus, it is virtually impossible in the mounted state of the system to pull the bearing bush out of the door bore, applying tensile forces occurring during normal use of the system.

Alternatively, the webs may be curved to a longitudinal central axis of the pipe section. Curved extending webs allow, as well as transverse webs, a particularly good backup of the bearing bush in the door bore. also It is advantageous if the curved webs do not run counter to the direction of the thread of the square pin, but form a kind of external thread on the pipe section of the bearing bush, which has the same direction of rotation as the thread on the square pin. In this way, the bearing bush can be pressed into the door bore more easily, since it performs a certain rotational movement during pressing. For the same reason, transverse straight webs should preferably not extend against the direction of the thread of the square pin.

Particularly preferably, the webs are deformable. Deformable webs facilitate concentric alignment of the bushings even when the door bore on opposite outer sides of the door has non-concentric and / or non-congruent outlines. In this case, the webs on one side of the bearing bush can deform more than on the opposite side, whereby a non-concentric alignment of the two openings of the door bore can be compensated.

According to a preferred embodiment, at least one rosette, in particular positive and / or non-positive, engages in one of the bearing bushes. In this way, the rosette can be fixed without a visible from the outside fixing is necessary, resulting in a particularly appealing and high quality appearance of the handle system. Also can be dispensed with additional holes in the door for fixing the rosette, which further simplifies the assembly.

According to a further embodiment, the square pin can be fixed in each case by means of a grub screw on the first and / or the second handle. Advantageously, at least one recess is provided on at least one end of the square pin, in which the grub screw can engage. This allows or the first and / or the second handle can be fixed particularly reliable.

Alternatively, the first end portion of the square pin with its associated handle be permanently connected, for example glued or welded. In particular, no visible fixing element for the square pin is provided on the handle. This contributes to a particularly appealing and high-quality appearance.

According to a further embodiment, the handles and / or the bearing bushes are each formed identically. This reduces production costs and storage costs, since the same tools or machines can be used for the production of both handles and / or both bushings. Also, no two different handles and / or two different bushings must be kept, and it must be paid during assembly, which handle and which bearing bush is mounted on which side of the door. Likewise, both end portions of the square pin can be formed identically, whereby the assembly of the handle system is further facilitated.

Fig. 1

ein erfindungsgemäßes Griffsystem in einem an einer Tür montierten Zustand;

Fig. 2

eine Querschnittsansicht des Griffsystems entlang der Linie A-A von Fig. 1;

Fig. 3

einen Vierkantstift des Griffsystems von Fig. 1;

Fig. 4

eine Lagerbuchse des Griffsystems von Fig. 1;

Fig. 5

einen Griff, einen Vierkantstift, zwei Lagerbuchsen und eine Gewindemutter des erfindungsgemäßen Griffsystems in einem zusammengebauten Zustand, ohne Tür;

Fig. 6

eine Explosionsansicht der Komponenten von Fig. 5.

A possible embodiment of the invention will be described below purely by way of example and with reference to the accompanying drawings. Show it:

Fig. 1

a handle system according to the invention in a state mounted on a door;

Fig. 2

a cross-sectional view of the handle system along the line AA of Fig. 1 ;

Fig. 3

a square pin of the handle system of Fig. 1 ;

Fig. 4

a bearing bush of the handle system of Fig. 1 ;

Fig. 5

a handle, a square pin, two bushings and a threaded nut of the handle system according to the invention in an assembled state, without door;

Fig. 6

an exploded view of the components of Fig. 5 ,

This in Fig. 1 and 2 handle system 10 is provided for mounting on a door 12 and comprises two handles 14 ', 14 "which are identical in the present embodiment, but in principle may also be different Regardless of its further concrete training, each handle 14', 14" in In any case, a region of its end facing the door 12 has a cylindrical projection 15 (FIG. Fig. 6 ) on.

Furthermore, the handle system 10 comprises a square pin 16 for connecting the handles 14 ', 14 ", which is formed from an elongated base body with a rectangular, in particular square, cross-section ( Fig. 3 ). The square pin 16 has a first end portion 18 and a first end portion 18 opposite the second end portion 20, wherein both the first end portion 18 and the second end portion 20 are each provided with a trapezoidal thread 22. The end sections 18, 20 also each have a recess 21, which serves to fix the square pin 16 to the respective handle 14 ', 14 "by means of a grub screw, not shown, The depth of each recess 21 increases towards the center of the square pin 16. These obliquely sloping formation of the recesses 21 ensures that the handles 14 ', 14 "continue to be pulled onto the square pin 16 when the grub screws are screwed into the recesses 21, which reduces the play of the mounted handle system 10.

For mounting the handles 14 ', 14 "on the door 12, two bearing bushes 26', 26" are provided, which are pressed into a door bore of the door 12 ( Fig. 2 ). As Fig. 4 shows, each bearing bush 26 ', 26 "comprises a passage 24 defining a hollow cylindrical pipe section 28, which receives in its interior an annular sliding bearing 44 for the cylindrical projection 15 of the respective handle 14', 14". At a door-facing end of each tube piece 28, a radially projecting collar 30 is formed. In addition, a plurality of webs 34 are provided with radially outer ridges 36 on an outer circumferential surface 32 of each pipe section 28. The webs 34 extend parallel to a longitudinal center axis of the pipe section 28 and have a certain elastic deformability. The radially outer back 36 of each web 34 is also sharp-edged. In this way, the webs 34 may deform and / or cut to different depths into the material of the door 12 and cause a concentric alignment of lock nut and bushings 26 ', 26 "even if the door bore on opposite sides of the door 12 is not concentric and / or non-congruent contours In other words, the bearing bushes 26 ', 26 "guided by the stuck in the lock nut square pin 16 is pressed independently of the door bore concentric with the lock nut in the door. Furthermore, the radially outer ridges 36 of each ridge 34 are provided with a barb 38 which can engage the material of the door 12 to secure the respective bushing 26 ', 26 "in the door bore of the door 12.

On each bearing bush 26 ', 26 "is attached from the outside a rosette 40 ( Fig. 1 and 2 ).

For mounting the handle system, the first end portion 18 of the square pin 16 is first attached to the first handle 14 ', here by means of a grub screw (not shown) ( FIGS. 5 and 6 ). Alternatively, it is also conceivable that the first end portion 18 of the square pin 16 is already preassembled on the first handle 14 ', for example glued into it.

On the first handle 14 'attached square pin 16, a first rosette 40', a first sliding bearing 44 'and a first bearing bush 26' are next attached. The collar 30 of the first bearing bush 26 'is facing the first handle 14'.

Then, the square pin 16 is passed through the door bore and arranged in the door bore lock nut. On the opposite of the door 12 protruding second end portion 20 of the square pin 16, a second bearing bush 26 "facing away from the door 12 collar 30 and a second sliding bearing 44" are then attached.

In addition, a threaded nut 42 is threaded onto the thread 22 of the second end portion 20 of the square pin 16, which has a maximum outer diameter greater than an inner diameter of the passage 24 of the second bushing 26 " "facing side a cylindrical projection 46, whose outer cross section is adapted to the inner cross section of the second bearing bush 26" received second sliding bearing 44 ", so that the cylindrical projection 46 in the second sliding bearing 44" can engage.

The tightening of the threaded nut 42 causes the second bushing 26 "to be pushed into the door bore and the first bushing 26 'to be pulled into the door bore, thus both bushings 26', 26" are pressed into the door bore tightening the threaded nut 42. By engaging in the second sliding bearing 44 "cylindrical projection 46 of the threaded nut 42 and the first slide bearing 44 'engaging cylindrical projection 15 of the first handle 14' takes place an automatic centering of lock nut and bearing bushes 26 ', 26" on the square pin sixteenth Any orientation required the bearing bushes 26 ', 26 "within the door bore is made possible by the deformability of the webs 34 of the bearing bushes 26 meanwhile.

Are the bushings 26 ', 26 "pressed so deep into the door bore that their collar 30 abut the outer sides of the door 12, the threaded nut 42 is unscrewed again from the square pin 16 and instead a rosette 40" attached to the second bearing bush 26 " ,

Finally, the second handle 14 "is attached to the second end portion 20 of the square pin 16, here by means of a grub screw, not shown, the second handle 14" is pushed so far on the square pin 16 until its cylindrical projection 15 completely in the second sliding bearing 44 ". is included.

LIST OF REFERENCE NUMBERS

10

handle system

12

door

14 '

first grip

14 "

second handle

15

approach

16

Square spindle

18

first end section

20

second end section

21

recess

22

thread

24

passage

26 '

first bearing bush

26 "

second bearing bush

28

pipe section

30

collar

32

outer jacket surface

34

web

36

move

38

barb

40

rosette

42

threaded nut

44

bearings

46

approach

Claims (14)

1. A handle system (10) for assembly at a door (12) having a door hole, comprising
   a first handle (14') and a second handle (14") as well as
   a square pin (16) which serves for the connection of the handles (14', 14") and which has a first end section (18) which is fastenable or fastened to the first handle (14') in a pre-assembly state,
   wherein a first bearing bushing (26') is provided for supporting the first handle (14') and a second bearing bushing (26") is provided for supporting the second handle (14"), with the bearing bushings (26', 26") each defining a passage (24) receiving the square pin (16);
   wherein at least one of the bearing bushings (26', 26") can be pressed into the door hole of the door (12);
   wherein the square pin (16) is provided with a thread (22) in a second end section (20) remote from the first end section (18); and
   wherein a threaded nut (42) is provided which can be screwed onto the thread (22) such that the at least one bearing bushing (26', 26") is pressed into the door hole,
   characterized in that at least one of the bearing bushings (26', 26") is formed by a pipe piece (28) at whose end remote from the door a radially projecting collar (30) is formed; and in that a plurality of webs (34) are provided at an outer jacket surface (32) of the pipe piece (28).
2. A handle system (10) in accordance with claim 1,
   characterized in that
   the thread (22) is a trapezoidal thread.
3. A handle system (10) in accordance with claim 1 or claim 2,
   characterized in that
   the threaded nut (42) has a maximum outer diameter which is larger than an inner diameter of the passage (24) of the second bearing bushing (26").
4. A handle system (10) in accordance with at least one of the preceding claims,
   characterized in that
   the threaded nut (42) has at its side facing the second bearing bushing (26") a cylindrical neck (46) whose outer cross-section is adapted to the cross-section of the passage (24) of the second bearing bushing (26") or to the inner cross-section of a slide bearing (44) received in the passage (24) of the second bearing bushing (26").
5. A handle system (10) in accordance with at least one of the preceding claims,
   characterized in that
   at least three webs (34), preferably at least five webs (34), are provided at the outer jacket surface (32) of the pipe piece (28).
6. A handle system (10) in accordance with at least one of the preceding claims,
   characterized in that
   at least one barbed hook (38), a grooving or a toothed arrangement is provided at a radially outer back (36) of at least one of the webs (34); and/or
   in that a radially outer back (36) of at least one of the webs (34) is formed as sharp-edged.
7. A handle system (10) in accordance with at least one of the preceding claims,
   characterized in that
   the webs (34) extend at least approximately in parallel with a longitudinal central axis of the pipe piece (28).
8. A handle system (10) in accordance with at least one of the claims 1 to 6, characterized in that
   the webs (34) extend transversely to a longitudinal central axis of the pipe piece (28), for example, at an angle from 2° to 80°, in particular from 5° to 50°.
9. A handle system in accordance with at least one of the claims 1 to 6, characterized in that
   the webs (34) extend in a curved manner with respect to a longitudinal central axis of the pipe piece (28).
10. A handle system (10) in accordance with at least one of the preceding claims,
    characterized in that
    the webs (34) are deformable.
11. A handle system (10) in accordance with at least one of the preceding claims,
    characterized by
    at least one rosette (40) which engages into one of the bush bearings (26', 26"), in particular in a shape-matched and/or force-transmitting manner.
12. A handle system (10) in accordance with at least one of the preceding claims,
    characterized in that
    the square pin (16) is fixable to the first and/or second handle (14") by means of a grub screw in each case.
13. A handle system (10) in accordance with at least one of the claims 1 to 11, characterized in that
    the first end section (18) of the square pin (16) is unreleasably connected, for example adhesively bonded or welded, to the first handle (14') associated with it; and in that a visible fixing element for the square pin (16) is in particular not provided at the first handle (14').
14. A method of assembling a handle system (10) in accordance with at least one of the preceding claims at a door (12) having a door hole, in which
    the square pin (16) fastened to the first handle (14') is guided successively through the first bearing bushing (26'), the door hole of the door (12) and the second bearing bushing (26") and then
    the threaded nut (42) is screwed onto the second end section (20) of the square pin (16) such that at least one of the two bearing bushings (26', 26") is pressed into the door hole.

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