EP2685037B1 - Switching nut for a switch lock - Google Patents

Description

The invention relates to a sliding nut for a lock, with a square opening for inserting a square of a pusher, according to the preamble of claim 1.

Nuts for locks, especially switching locks, have long been known in practice. A sliding nut is a component that is provided in a switch lock and connected via a square with a pusher. By pressing the trigger, the switch nut is moved, with which various components of the lock are coupled. The closing or opening movement of the lock can then be initiated or controlled via the movement of the sliding nut.

Known nuts are usually produced by casting. These are castings. For the production of such cast-iron nuts corresponding tools are required, which are relatively expensive. This is particularly disadvantageous if a particular lock is only to be produced in small numbers.

From the GB 690 765 A is already a generic Schaltnuss known for a castle. The known Schaltnuss assembly has a central nut lever, abut against the inner lock washers. The outer lock washer is adjoined on the outside by an outer lock washer. The individual flat sheet sections are held together by bearing sections, which are also formed as flat sheet sections. The known Schaltnuss assembly is composed of a plurality of flat sheet sections. The structure is relatively expensive, which leads to an increase in manufacturing costs.

From the DE 472 721 and the NL 6 501 567 In each case, a divided locknut is known, in which a two-part nut lever and the construction of the shift nut, a plurality of lock washers are provided. The nut lever and the individual lock washers consist of flat sheet sections, which are connected to each other via two bolts. Above the bolts, the disk package, in which the individual disks rest on one another riveted. To build the Schaltnuss assembly a variety of flat sheet metal sections are required. This variety of disks required to construct the Schaltnuss assembly leads to an increase in manufacturing costs.

Object of the present invention is therefore to provide a Schaltnuss of the type mentioned for a lock available that can be easily and inexpensively manufactured.

In the invention, it is now provided that the bearing sections are also formed as flat plate sections. The realization of the bearing sections in the form of flat sheet sections offers two major advantages. On the one hand, the production of the bearing sections can be considered from the outset in the production of the other flat sheet metal sections. These can basically be produced in one operation with the other flat sheet metal sections. So there are, unlike the prior art, no separate round bolts required for attachment. In this case, the bearing plate sections according to the invention can have a beyond the mere attachment function of the nut lever and the individual discs further function, namely a construction function of the Schaltnuss assembly. By appropriate projections or slots on the bearing sections ensures that the nut lever and the lock washers do not rest directly on each other, but are spaced from each other via the bearing section. In this way results in a contact-free spacing of the lock washers to the nut lever. In this way, supplemental slices, which are necessary in the prior art for Schaltnuss structure omitted. Thus, in the invention, an entire kit with bearing sections, the nut lever and the individual lock washers can already be made available during production, without the need for separate rivet bolts. Furthermore, the number of necessary parts for constructing the Schaltnuss assembly can be reduced by the formed as a bearing sections flat plate sections.

In the case of the inventive sliding nut assembly, the flat plate section designed as a nut lever ultimately represents the functional basic element of the sliding nut assembly. Appropriate switching and / or running surfaces, hooks, projections, interventions or the like can be provided on it or on its outer circumference. in order to initiate corresponding motion sequences in the switch lock during movement of the nut lever or to allow components, such as springs, to be acted upon at the shift nut. Furthermore, in the region of the nut lever, openings, elongated holes or scenes for fastening or for actuating further components may be provided.

Furthermore, the Schaltnuss assembly has at least on one side a locking washer which is placed on the bearing sections. In a preferred embodiment, another lock washer is placed on the lock washer. It should be pointed out that it would also be possible in principle with appropriate design of the lock washer to provide only a lock washer on the relevant side of the nut lever. Preferably, however, the arrangement of a first and a further locking washer on each side of the nut lever. As a result, the inventive Schaltnuss assembly in the aforementioned preferred embodiment of the invention then a total of seven components, namely the nut lever, two bearing sections, two lock washers and two other lock washers.

In another very simple embodiment, it is in principle also possible to provide the nut lever as a functional component, two bearing sections and only a single locking washer.

Incidentally, the embodiment according to the invention makes it possible, in a very simple manner, to change the sliding-nut assembly or to adapt it to another intended use. For this purpose, only one adapted to the other function nut lever must be used, while the remaining components can be used in the same form with even identical structure on. Ultimately, this significantly reduces the manufacturing costs.

So that the square of the pusher can operate the nut lever, the nut lever has a corresponding square opening portion, which is part of the entire square opening of the Schaltnuss assembly on. In addition, recesses are provided for the particular lateral insertion of the bearing plates in the nut lever. The recesses can be self-contained openings, that is to say independent of the square opening area. In this case, then have the bearing portions corresponding projections for engagement in these recesses. However, it is preferred that the recesses are provided on opposite sides of the square opening, thus opening into the square opening. In this case, at least one slot is then provided on the bearing section, so that the bearing section can be inserted into the recess via the slotted region. Preferably, a slot is provided on opposite sides of the bearing portion, so that the bearing portion is slotted on both sides and thus rests on both sides in the edge region of the recess on the nut lever. The dimensions of the slot correspond at least substantially the material thickness of the nut lever, so that there is an at least substantially play-free arrangement of the bearing plate.

The formation of the recess and the bearing portion with the slots is otherwise such that the bearing portion is arranged in the installed state in a transverse plane perpendicular to the plane of the nut lever and positively held in the transverse plane on the nut lever.

Preferably, the bearing section is arranged with respect to the square opening area so that it is parallel with its associated, the recess having surface of the square opening area with its flat plane.

To connect the bearing portion with the lock washer and / or the further lock washer is provided at the top and / or the lower end of the bearing portion, a web for engaging in a corresponding recess of the lock washer and the further lock washer. The recess can in principle again be a self-contained opening, which therefore does not open into another area.

However, it is preferably the case that on the securing disk, which also has a square opening area like the further securing disk, inner recesses are provided on opposite sides according to the arrangement of the bearing portions, which openings open into the square opening area. These inner recesses correspond from the relevant dimensions forth to the webs on the bearing sections. In contrast, on the other locking washer on the outside on the circumference on opposite sides in each case an outer recess is provided, which opens to the outside.

Ultimately, results from the realization of the inner and outer recesses in the locking washer and the other locking washer a positional fixation of the bearing sections.

To secure the lock washers on the bearing sections a riveted connection is preferably provided. For this purpose, the outer end of the web is designed as a rivet. Preferably, two rivet projections are provided for this purpose. To produce the riveted joint, the rivet projections are upset by vertical impacts with a hammer or the like. By upsetting the rivet projections are wider until they are deformed over the edge of the recess while pressing against the walls of the recess and the adjoining surface area of the outer lock washer.

So that the riveted material of the rivet projections does not protrude as far as possible or only slightly beyond the plane of the outer lock washer, it is provided in a preferred embodiment that at least one recessed seat adjoins the respective recess laterally. The riveted material can then enter the depression. The recessed recording can be produced, for example, by a corresponding embossing of the respective locking washer.

From the basic structure, it is otherwise the case that the individual lock washers and the nut lever are arranged parallel to each other, wherein the nut lever is spaced from the adjacent lock washer on the bearing portion. If two securing washers are provided on each side of the nut lever, they are preferably located directly opposite one another. In this case, the diameter of the further securing disk should be smaller than the diameter of the first securing disk, so that there is a shoulder which serves for fixing purposes in the housing of the lock.

Incidentally, in the present invention, it is such that the flat plate portions are formed as punched parts which can be easily and inexpensively manufactured.

Ultimately, can be realized by the invention readily to the plane of the nut lever mirror-symmetric shape of the Schaltnuss assembly, so that the invention Schaltnuss can be used for both a right and a left-lock.

Fig. 1

eine Darstellung eines eine erfindungsgemäße Schaltnuss-Baugruppe aufweisenden Schaltschlosses,

Fig. 2

eine perspektivische Ansicht einer erfindungsgemäßen Schaltnuss-Baugruppe,

Fig. 3

eine Explosionsdarstellung der erfindungsgemäßen Schaltnuss-Baugruppe,

Fig. 4

eine Darstellung eines Nusshebels der erfindungsgemäßen Schaltnuss-Baugruppe,

Fig. 5

eine Darstellung entsprechend Fig. 4 mit angesetzten Lagerabschnitten,

Fig. 6

eine Darstellung entsprechend Fig. 5 mit eingesetzten Lagerabschnitten,

Fig. 7

eine perspektivische Darstellung einer noch unvernieteten Schaltnuss-Baugruppe,

Fig. 8

eine Draufsicht der erfindungsgemäßen Schaltnuss-Baugruppe aus Fig. 7,

Fig. 9

eine Seitenansicht der Schaltnuss-Baugruppe aus Fig. 8 und

Fig. 10

eine Unteransicht der Schaltnuss-Baugruppe aus Fig. 8.

Hereinafter, embodiments of the invention will be explained with reference to the drawing. All described and / or illustrated features, alone or in any combination form the subject of the present invention, regardless of their combination in the claims or their dependency. It shows

Fig. 1

a representation of a switching nut assembly according to the invention comprising a switching mechanism,

Fig. 2

a perspective view of a Schaltnuss assembly according to the invention,

Fig. 3

an exploded view of the invention Schaltnuss assembly,

Fig. 4

a representation of a nut lever of the invention Schaltnuss assembly,

Fig. 5

a representation accordingly Fig. 4 with attached bearing sections,

Fig. 6

a representation accordingly Fig. 5 with inserted bearing sections,

Fig. 7

a perspective view of a still riveted Schaltnuss assembly,

Fig. 8

a plan view of the invention Schaltnuss assembly Fig. 7 .

Fig. 9

a side view of the Schaltnuss assembly from Fig. 8 and

Fig. 10

a bottom view of the Schaltnuss assembly from Fig. 8 ,

In Fig. 1 an example designed as a switch lock lock 1 is shown, which has a pusher 2. The pusher 2 engages with a square not shown in detail in a square opening 3 a in Fig. 1 Not shown on a sliding nut. On the training of the switch lock, moreover, it does not matter crucially here. Basically, it may be a switch lock, as for example from the DE 197 27 364 C1 or DE 10 2004 009 973 B4 is known.

It is now essential that the shift nut is ultimately made of a plurality of flat sheet metal sections which are fixedly connected to each other to a Schaltnuss assembly 4. The Schaltnuss assembly 4 has as a functional component and for coupling with other components of the switching mechanism 1, a nut lever 5 and further two bearing sections 6, 7, two first lock washers 8, 9 and two further lock washers 10, 11. All the above components are flat sheet metal sections, for example have been produced by punching. It is therefore ultimately punched flat sheet metal parts.

The nut lever 5 has a square opening area 12. On two opposite sides recesses 13, 14 are provided, which open in the square opening area 12. The two bearing sections 6, 7 are provided on opposite side surfaces each with a slot 15, 16. The depth of the recesses 13, 14 is greater than the material thickness of the bearing sections 6, 7. The design and arrangement of the bearing sections 6, 7 in the recesses 13, 14 of the nut lever fifth is such that the bearing sections 6, 7 in the installed state (see. Fig. 2 ) are arranged in a transverse plane perpendicular to the plane of the nut lever 5 and are held in a form-fitting manner in the transverse plane on the nut lever 5. In this case, the flat sides of the bearing sections 6, 7 run at least substantially parallel to the associated sides of the square opening region 12. In this context, "associated sides" are understood to mean those sides which have the respective recess for the respective bearing section.

Each of the bearing sections 6, 7 has at its upper end a protruding web 17 and at its lower end a protruding web 18. The webs 17, 18 are provided for engaging in corresponding recesses of the first locking washer 8, 9 and the further securing lock washer 10, 11. This will be discussed in more detail below.

On the bearing sections 6, 7 on top and bottom side is placed in each case a first lock washer 8, 9. This has a square opening portion 19 with inner recesses 20, 21. The inner recesses 20, 21 open into the square opening region 19, the relevant dimensions of the square opening region 19 corresponding to the relevant dimensions of the square opening region 12 of the nut lever 5. Furthermore, the dimensions of the recesses 20, 21 correspond to the dimensions of the recesses 13, 14.

Each of the further securing washers 10, 11 has a square opening area 22, which corresponds to the dimensions of the other square opening areas 12, 19 of the relevant dimensions forth from the outside on the first lock washer 8, 9 respectively. Ultimately, all square opening portions 12, 19, 22 form the square opening 3, in which the square of the pusher 2 engages. By the way, the further securing disk 10, 11 has a smaller diameter than the first securing disk 8, 9, so that between the first locking washer 8, 9 and the further locking washer 10, 11 in the assembled state, a paragraph that can serve, for example, for fixing purposes of the Schaltnuss assembly 4 in the housing of the switching mechanism.

Incidentally, outer recesses 23, 24 are provided on the outer side on the outer side of the further securing disk 10, 11 on opposite sides. The outer recesses 23, 24 are each spaced by a web 25 of the square opening portion 22. The width of the web 25 plus the material thickness of the bearing sections 6, 7 corresponds to the depth of the recesses 13, 14 and the inner recesses 20, 21st

Incidentally, as is apparent from the individual figures, the outer ends of the webs 17, 18 are each formed as a rivet. For this purpose, the outer ends of the webs 17, 18 are each provided with two projections, which can be easily deformed. In the Fig. 7 to 10 is the state of the Schaltnuss assembly 4 shown before the riveting process. The rivet projections protrude upwards.

During riveting the rivet projections are deformed laterally. Therefore, the further lock washers 10, 11 on their outer side adjacent to the outer recesses 23, 24 each recessed seats 26.

As it turns out Fig. 9 shows, the nut lever 5 is parallel to the first lock washers 8, 9 and also arranged parallel to the other lock washers 10, 11. Fig. 3 illustrates that the first lock washers 8, 9 are ultimately spaced from the nut lever 5 via the bearing sections 6, 7, while the further lock washers 10, 11 rest on the respective first lock washer 8, 9. Due to the spacing of the lock washers 8, 9 from the nut lever 5 due to the bearing sections 6, 7 results in a sufficiently high nut construction with comparatively few flat sheet sections,

The riveted material is completely absorbed in the recessed receptacles 26 in the riveted state and does not over the outer sides of the further lock washers 10, 11 via (see. Fig. 2 ). Incidentally, the Schaltnuss assembly 4 is mirror-symmetrical to the plane of the nut lever 5, so it can be arranged right or left around.

The nut lever 5 itself has a contouring which is adapted to the respective lock purpose or the functions to be fulfilled. This can basically vary considerably. In the illustrated embodiment, the nut lever 5 has a freewheel portion 27 for a mandrel. Within the freewheeling area is a Entsperrnase 28 for the aforementioned mandrel. Furthermore, the nut lever 5 has an opening 29 for arranging a roller bearing. Furthermore, the nut lever 5 approximately opposite the opening 29, a nose 30 and approximately opposite the nose 30 has an outwardly open engagement 31 for the arrangement of a spring.

The assembly of the Schaltnuss assembly 4 is carried out such that after creation of the individual flat sheet sections, first the bearing sections 6, 7 are inserted into the corresponding recesses 13, 14. The material areas above and below the slots 15, 16 are then on the adjacent edges of the recesses 13, 14, as in Fig. 6 is shown. Subsequently, the first locking washers 8, 9 and the further securing washers 10, 11 are placed from above and below, so that then the in the Fig. 7 to 10 shown state results. Then, the ends of the four webs 17, 18 riveted, so that in Fig. 2 shown Schaltnuss assembly 4 results.

LIST OF REFERENCE NUMBERS

1

lock

2

handle

3

Square hole

4

Switching nut assembly

5

nut lever

6

bearing section

7

bearing section

8th

lock washer

9

lock washer

10

another lock washer

11

another lock washer

12

Square opening area

13

recess

14

recess

15

slot

16

slot

17

web

18

web

19

Square opening area

20

inner recess

21

inner recess

22

Square opening area

23

Außenausnehmung

24

Außenausnehmung

25

web

26

in-depth recording

27

Freewheel area

28

unlocking projection

29

opening

30

nose

31

intervention

Claims (12)

1. A switching nut for a lock (1), having a square opening (3) for the insertion of a square of a pusher (2), wherein a plurality of flat metal sheet sections connected firmly with each other to form a switching-nut assembly (4) are provided, wherein the switching-nut assembly (4) has at least one flat metal sheet section designed as a nut lever (5), at least one flat metal sheet section designed as a lock washer (8, 9) and at least two bearing sections for bearing the nut lever (5) and the lock washer (8, 9) and wherein the bearing sections (6, 7) are designed as flat metal sheet sections,
   characterized in
   that the nut lever (5) and the lock washer (8, 9) are spaced apart from each other via the bearing sections (6, 7).
2. A switching nut according to Claim 1, characterized in that at least one flat metal sheet section designed as a further lock washer (10, 11) is provided.
3. A switching nut according to Claim 1 or 2, characterized in that the nut lever (5) has a square opening region (12) with recesses (13, 14) provided in particular on opposite sides, opening in particular into the square opening region (12).
4. A switching nut according to any one of the preceding claims, characterized in that a slot (15, 16) or a projection is provided on the bearing section (6, 7) for the lateral insertion of the bearing section (6, 7) into the recess (13, 14), so that the bearing section (6, 7) can be inserted laterally into the recess (13, 14) and is arranged in the installed state in a transverse plane perpendicular to the plane of the nut lever (5) and is held in particular positively in the transverse plane on the nut lever (5).
5. A switching nut according to any one of the preceding claims, characterized in that the bearing section (6, 7) is arranged in the recess (13, 14) in such a manner that with its flat plane it is parallel to the assigned side of the square opening region (12) having the recess (6,7).
6. A switching nut according to any one of the preceding claims, characterized in that the bearing section (6, 7) on its upper and/or lower end has a projecting web (17, 18) for engagement with a corresponding recess of the lock washer (8, 9) and/or the further lock washer (10, 11).
7. A switching nut according to any one of the preceding claims, characterized in that the lock washer (8, 9) has a square opening region (19) with in particular inner recesses (20, 21) for the web (17, 18) provided in particular on the opposite sides.
8. A switching nut according to any one of the preceding claims, characterized in that the further lock washer (10, 11) has a square opening region (22) and on the outside on the circumference has outer recesses (23, 24) for the web (17, 18) in particular on opposite sides.
9. A switching nut according to any one of the preceding claims, characterized in that the outer end of the web (17, 18) is designed as a rivet and preferably has two rivet projections.
10. A switching nut according to any one of the preceding claims, characterized in that at least one recessed receptacle (26) is provided for the riveted material of the web (17, 18) laterally next to the outer recess (23, 24).
11. A switching nut according to any one of the preceding claims, characterized in that the nut lever (5) is arranged parallel to the lock washer (8, 9) and/or to the further lock washer (10, 11) and/or that the lock washer (8, 9) and the further lock washer (10, 11) lie flat against one another and/or that the switching-nut assembly (4) is mirror-symmetrical to the plane of the nut lever (5).
12. A switching nut according to any one of the preceding claims, characterized in that the nut lever (5) and/or the bearing section (6, 7) and/or the lock washer (8, 9) and/or the further lock washer (10, 11) are/is designed as a stamped part.

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