DE19933645C1 - Flat key - Google Patents

Abstract

The invention relates to a flat key with a handle part (2) and a key bit (3), the handle part (2) comprising a housing (5) and the key bit (3) being pivotable on the handle part housing (5) from a folded position to a folded position. is arranged. DOLLAR A In order to ensure that the handle part housing (5) of the flat key (1) can be kept small and yet there is sufficient space for any electronics to be accommodated, the invention proposes the key bit (3) in its folded position in an outside To accommodate recess (12) of a first flat side (13) of the housing (5) and to be arranged on the handle part housing (5) such that it can be pivoted about an axis of rotation (10) extending in the direction of the broad side of the handle part housing (5) into the unfolded position is.

Description

The invention relates to a flat key with a handle part and a key bit, wherein the handle part comprises a housing and the key bit from a folded into an out folded position is pivotally arranged on the handle part housing.

Such flat keys are known for example from DE 39 02 537 A1 and have the Advantage on that they take up relatively little space and that when they are carried, for. B. in a man pocket or trouser pocket, there is less risk of injury than with flat keys with rigid key bit attached to the handle.

Usually, the key bit is used in the known generic flat keys Actuation of a push button on a torsion spring laterally out of the handle housing folds or swung into the handle housing against the pressure of the torsion spring.

A disadvantage of these known flat keys is, among other things, that for the accommodation the key bit in the respective handle part housing requires a relatively large amount of space.  

This is particularly important with electronic keys but needed for the electronic circuit elements to keep the corresponding handle part housing as small as possible. In addition, in the known folding keys Handle part central position of the key bit in its unfolded position only through elaborate measures reachable.

The invention has for its object a flat key sel to indicate the type mentioned, the handle part housing can be kept small and still sufficient Has space for any electronics to be accommodated.

This object is achieved by the features of Claim 1 solved. Further, particularly advantageous Ausge Events of the invention disclose the subclaims.

The invention is essentially based on the idea that Key bit in its folded position in one outside recess of the flat side of the housing under bring and arrange on the handle housing that he towards one towards the broad side of the handle part housing extending axis of rotation in the extended position is pivotable.

In order to ensure that the mechanical parts are optimally available adapting the space of the handle housing, it has proven to be proven advantageous to turn the key bit Axis slidable to arrange and a positive guidance for the Key bit must be provided such that the key bit in the folded position on the edge side in the handle part housing stored and centered in the extended position is arranged on the handle part.  

In a further advantageous embodiment of the invention are the mechanical parts of the flat key, esp special so the key bit with storage and torsion spring as well as the forced management of the key bit and the locks processing device, in a separate mechanical function arranged carrier. This can be gripped from the side Push in partial housing and connect to it (e.g. ver rest). Through such a separately mountable radio The main element is a particularly quick assembly of the flat key and optimal storage of the components to be assembled Units possible.

To simple assembly or disassembly of the invention To be able to make a flat key, it has also proven to be Proven useful if the handle housing with two interconnectable (e.g. clippable) bowl-shaped Halves of the housing.

Further details and advantages of the invention emerge from the following embodiment explained with reference to figures example. Show it:

Fig. 1 is a plan view of a flat key according to the invention, partially shown in section with a folded key bit and

Fig. 2 shows the top view corresponding to FIG. 1 with the key bit extended.

In Figs. 1 and 2 refers to a flat key 1 that includes a handle section 2 and a key bit 3. The key bit 3 is arranged in an interchangeable function carrier 4 , which can be inserted into the handle part housing 5 of the flat key 1 and locked with it.

The handle part housing 5 consists of two mutually clippable shell-shaped housing halves 6 , 7 made of plastic and encloses the corresponding electronic circuit elements with an electronic key.

The key bit 3 is pivotably arranged on the function carrier 4 from a folded position ( FIG. 1) into a folded position ( FIG. 2). For this purpose, the Keyring is selbart 3 mounted on a shaft 8 which extends to a transversely to the longitudinal axis 9 of the key blade 3 in the direction of the broad side of the housing handle portion 5 axis of rotation 10 is pivotable. The key bit 3 is struck by a pretensioned torsion spring 11 in its retracted position, such that the key bit 3 is pivoted after its unlocking from the torsion spring 11 in the unfolded position.

In addition, the shaft 8 and thus the key bit 3 is arranged displaceably in the direction of the axis of rotation 10 , the torsion spring 11 simultaneously acting as a compression spring.

The key bit 3 is stored in its folded position in a recess 12 ( FIG. 2) of the first (facing the viewer) flat side 13 of the casing of the handle part housing 5 and fixed in this position by a locking device 14 also arranged on the function carrier 4 . For this purpose, the locking device 14 comprises a slide 16 acted upon by a compression spring 15, which is pressed by the spring 15 over the key bit 3 .

If the slider is pushed back 16, so the key is disclosed pivots 3 by the torsion spring 11 about the axis of rotation 10 and thereby displaced lung by located on the functional carrier 4 constraining guide 17 laterally with respect to the folded Stel, in such a way that the key bit 3 in its unfolded position is arranged centrally on the handle part 2 .

In the unfolded end position, the key bit 3 presses against a stop 18 and is secured in this position by a locking cam 19 arranged on the slide 16 of the locking device 14 , which engages in a groove-shaped recess 20 of the shaft 8 and is pressed there against a locking surface 21 .

It can the key bit also with a sleeve-shaped Part connected, which is around a fixed shaft pivoted and slidably disposed along this shaft is.  

Reference list

1

Flat key, key

2nd

Handle part

3rd

Key beard

4th

Functionaries

5

Handle housing, housing

6

,

7

Housing halves

8th

wave

9

Longitudinal axis

10th

Axis of rotation

11

Torsion spring

12th

deepening

13

first flat page

14

Locking device

15

Compression spring, spring

16

Slider

17th

Positive control

18th

attack

19th

Safety cams

20th

Recess

21

Restricted area

Claims (9)

1. A flat key having a grip portion (2) and a Keyring selbart (3), wherein the grip part (2) comprises a housing (5) about construed and the key bit (3) pivotable from a folded to a deployed position on the grip element housing (5) is arranged with the features:

• a) the key bit ( 3 ) is arranged pivotably about an axis of rotation ( 10 ) extending transversely to its longitudinal axis ( 9 ) in the direction of the broad side of the handle part housing ( 5 );
• b) the key bit ( 3 ) is stored in its folded position in a recess ( 12 ) of the first flat side ( 13 ) of the casing of the handle part housing ( 5 ) and can be fixed in this position by a locking device ( 14 );
• c) the key bit ( 3 ) is acted upon by a torsion spring ( 11 ) pretensioned in its folded position, such that the key bit ( 3 ) is pivoted into the unfolded position after being unlocked by the torsion spring ( 11 ).

2. Flat key according to claim 1, characterized in that the first flat side ( 13 ) of the handle part housing ( 5 ) contains a positive guide ( 17 ) for guiding the key bit ( 3 ) when pivoting from its folded into its unfolded position and vice versa. 3. Flat key according to claim 2, characterized in that the key bit ( 3 ) slidably arranged in the direction of the axis of rotation ( 10 ) and the positive guide ( 17 ) is designed such that the key bit ( 3 ) in its unfolded position laterally opposite it folded position is shifted. 4. Flat key according to one of claims 1 to 3, characterized in that the key bit ( 3 ) in its folded position is arranged centrally on the handle part ( 2 ). 5. Flat key according to one of claims 1 to 4, characterized in that it is in the locking device ( 14 ) by a compression spring ( 15 ) Bea struck slide ( 16 ) which in the folded position of the key bit ( 3rd ) can be pushed over this bar. 6. Flat key according to one of claims 1 to 5, characterized in that the key bit ( 3 ) on a ver slidable in the handle housing ( 5 ) arranged shaft ( 8 ) is attached. 7. Flat key according to claim 6, characterized in that on the slide ( 16 ) of the locking device ( 14 ) a locking cam ( 19 ) is arranged and on the shaft ( 8 ) a groove-shaped recess ( 20 ) is provided, such that in the unfolded Position of the key bit ( 3 ) of the safety cams ( 19 ) by the compression spring ( 15 ) of the slide ( 16 ) against a Sperrflä surface ( 21 ) of the groove-shaped recess ( 20 ) pressed and the key bit ( 3 ) is fixed in this position. 8. Flat key according to claim 6 or 7, characterized in that the mechanical parts of the flat key ( 1 ) including the key bit ( 3 ), the shaft ( 8 ), the torsion spring ( 11 ), the positive guide ( 17 ) and the locking device ( 14th ) are arranged in a separate mechanical rule carrier ( 4 ) which can be inserted laterally into the handle housing ( 5 ) and locked with it. 9. Flat key according to one of claims 1 to 8, characterized in that the grip element housing (5) with each two verklipsbare shell-shaped housing halves (6, 7).