DE202022100341U1 - Flat piece with lead-in section - Google Patents

Abstract

Flat piece (1) for attachment to a key ring (30), with
- a first side (3) and a second side (5) arranged parallel and spaced apart from the first side (3),
- an edge (7) extending essentially perpendicularly to the first side (3) and second side (5) and connecting the first side (3) and the second side (5), and
- A from the first side (3) to the second side (5) extending recess (9) for inserting a turn (33) of the key ring (30), characterized in that the edge (7) has an insertion portion (10) with a Insertion surface (11, 13) which is inclined at an angle α <80°, in particular at an angle α<60°, relative to the first side (3).

Description

The present invention relates to a flat piece for attachment to a key ring, having a first side and a second side parallel to and spaced from the first side, an edge connecting the first side and the second, and an edge extending from the first side to the second Side extending recess for inserting a turn of the key ring.

Flat pieces of the type mentioned are generally known. They are machined in any fashion and then attached to a key ring. Key rings are usually made of a metallic material, in particular spring steel, and have a number of windings lying against one another. To attach the flat piece to the key ring, the windings are usually spread apart in such a way that a distal end of the key ring is held at a distance from the other windings and can be passed through the corresponding recess in the flat piece. Due to the shape and the material of the key ring, the ring pulls itself back into its original shape, so that the flat piece is reliably attached to the key ring. The key ring must be spread at least far enough for a distance between the distal end of the key ring and the adjacent windings of the key ring to be set, which is greater than the distance between the first and second sides of the flat piece. This wide spread of the key ring requires increased effort and usually has to be done by hand. This is perceived as disadvantageous and in particular involves the risk of injuries to the hands or fingernails.

It was therefore the object of the present invention to improve a flat piece of the type mentioned at the outset in such a way that the attachment of the flat piece to a key ring is made easier and, in particular, the risk of injury is minimized.

The invention achieves the object mentioned at the outset by a flat piece according to claim 1. In particular, the invention proposes that the edge has an insertion section with an insertion surface which is at an angle α < 80°, in particular at an angle α < 60° with respect to the first side is tilted.

The insertion section according to the invention with an insertion surface provides an area in which the edge has a reduced height and the respective key ring does not have to be spread apart as far by hand to fasten the flat piece. After the key ring is spread in such a way that it comes into contact with the second side and the insertion surface, it is successively spread through the contact with the insertion surface and the second side, the force required for this being compared to the flat pieces known from the prior art for attachment to a key ring.

The edge connects the first side and the second side in particular at least in sections. An edge that extends essentially perpendicularly to the first side and the second side is understood here to mean an edge that runs in an angular range of 90°+/-5° to the first side and the second side.

According to a preferred embodiment, the insertion section is formed adjacent to the recess. Thus, engagement of the key ring with the flat is further facilitated by locating the insertion portion adjacent to the recess. In particular, this further reduces the necessary spreading of the key ring for bringing it into engagement with the recess. In the present case, an adjacent arrangement is understood to mean an arrangement which allows a distance between the insertion section and the recess, but which, for example, is only 1/2 or less of this width in relation to the width of the first side.

According to a preferred embodiment, the insertion surface is a first insertion surface and the insertion section also has a second insertion surface which is inclined at an angle β<80° with respect to the second side. A total of two insertion surfaces, which thus converge, can further simplify the necessary spreading of the key ring for fastening the flat piece. The key ring comes into contact with the first insertion surface and the second insertion surface and is gradually and evenly spread by being guided past both insertion surfaces in order to be guided through the recess.

According to a further preferred embodiment, the edge has a first edge section and a second edge section, which runs at a 90° angle to the first edge section, the first edge section and the second edge section touching in the area of the insertion section. The insertion section is thus arranged in the area of an edge and is therefore easy to produce, for example by milling.

According to a further preferred embodiment, the edge forms an arc of a circle, at least in sections, and the insertion section is arranged in the area of the circular arc. Sharp edges are thus effectively avoided and the risk of injury is further reduced by the area of the edge designed as a circular arc and in particular the arrangement of the insertion section in this area.

The edge preferably has a first height _h1 , which corresponds to the distance between the first side and the second side, and in the area of the insertion section has a second height _h2 , which is in a range from 0.5 mm to 1.5 mm, in particular in a range of 0.8 mm to 1.0 mm. The flat piece also has a sufficient minimum material thickness in the insertion section, defined by the height h ₂ , but at the same time allows the insertion surface to be easily brought into contact with the key ring with only slight spreading of the key ring.

According to an alternative preferred embodiment, the first insertion surface touches the second side at its distal end. In the area of the insertion section there is therefore no edge or essentially no edge. Furthermore, the two insertion surfaces enclose an acute angle and a distal end with a minimum height of the insertion section is provided, so that the key ring easily comes into contact with the first insertion surface and the second side and by passing the second side and the Insertion is gradually spread apart.

More preferably, the insertion surface is a chamfer which is inclined at an angle α with respect to the first side, the angle α being <60°. In the present case, a chamfer is understood to mean a beveled surface on a workpiece edge. A chamfer can easily be machined into such a flat piece. The inclination of the chamfer at an angle α<60° results in a gradual spreading of the key ring after the distal end of the key ring has been brought into contact with the chamfer. The bevel particularly preferably has an angle α<45° with respect to the first side.

According to an alternative preferred embodiment, the lead-in surface is a stepped chamfer, which is arranged adjacent to a first edge section and a second edge section. A stepped chamfer is when only sections of an edge are machined. Milling, grinding or planing are possible processing methods. Thus, an insertion surface designed as a stepped chamfer is only provided in a defined area. The influence of the insertion portion on the rigidity and strength of the sheet is thus reduced.

Preferably, the lead-in surface has a longitudinal extent from the edge to the first side which is in a range from 3 mm to 10 mm. The longitudinal extent is understood to mean the extent from the respective edge essentially orthogonally in the direction of the center of the surface of the first or second side. The longitudinal extent is to be measured orthogonally from the respective point along the edge. With a longitudinal extension in a range of 3 mm to 10 mm, sufficient spreading is realized with appropriate application of deformation forces to the key ring.

Preferably the lead-in surface extends from the edge to the recess. This reduces the necessary spreading of the key ring overall.

The flat piece is preferably at least partially made of a metallic material. The flat piece is particularly preferably made entirely of a metallic material. More preferably, the flat piece is made of steel. The flat piece is particularly preferably hardened in the area of the insertion section, in particular hardened with a glossy layer.

It is preferred that the flat piece is designed as a key. Keys are often engaged with key rings. They are used to open locks. The key preferably has a head section and a shank section, and the recess and the insertion sections are associated with the head section.

Thus, like the recess, the insertion section does not impede the shank section, which is inserted into locks to open locks.

According to an alternative preferred embodiment, the flat piece is designed as a key fob.

The invention has been described above in a first aspect in relation to the sheet. In a second aspect, the invention relates to a key arrangement comprising a key ring and a flat piece connected to the key ring according to the first aspect of the invention. Preferred embodiments and advantages of the present invention mentioned in relation to the first aspect are also preferred embodiments and advantages in relation to the second aspect and vice versa.

In a third aspect, the invention relates to the use of a flat piece according to the first Aspect of the invention for attachment to a key ring. The advantages and exemplary embodiments described above in relation to the first aspect are also advantages and preferred exemplary embodiments in relation to the third aspect of the invention and vice versa.

• 1a zeigt eine erste Ausführungsform eines Flachstücks schematisch in einer perspektivischen Ansicht;
• 1b zeigt eine Seitenansicht des Flachstücks gemäß 1a;
• 2a zeigt eine zweite Ausführungsform eines Flachstücks, welches als ein Schlüssel ausgebildet ist, schematisch in einer Draufsicht;
• 2b zeigt den Schlüssel gemäß 2a in einer Seitenansicht;
• 3a zeigt eine dritte Ausführungsform eines Flachstücks, welches als ein Schlüssel ausgebildet ist, schematisch in einer Draufsicht;
• 3b zeigt den Schlüssel gemäß 3a in einer Seitenansicht;
• 4a zeigt ein Flachstück gemäß einer vierten bevorzugten Ausführungsform in schematisch einer perspektivischen Ansicht;
• 4b zeigt das Flachstück gemäß 4a in einer Seitenansicht; und
• 5 zeigt eine Schlüsselanordnung schematisch in einer perspektivischen Ansicht.

The invention is described below using preferred exemplary embodiments with reference to the attached figures.

• 1a shows a first embodiment of a flat piece schematically in a perspective view;
• 1b shows a side view of the flat piece according to FIG 1a ;
• 2a shows a second embodiment of a flat piece, which is designed as a key, schematically in a plan view;
• 2 B shows the key according to 2a in a side view;
• 3a shows a third embodiment of a flat piece, which is designed as a key, schematically in a plan view;
• 3b shows the key according to 3a in a side view;
• 4a shows a flat piece according to a fourth preferred embodiment in a schematic perspective view;
• 4b shows the flat piece according to 4a in a side view; and
• 5 shows a key arrangement schematically in a perspective view.

The 1a and 1b 12 show a flat piece 1 schematically and by way of example according to a first preferred embodiment of the invention.

How in particular 1b 1, the flat piece 1 has a first side 3 and a second side 5 which runs parallel to and at a distance from the first side 3. FIG. The first side 3 and the second side 5 are connected to one another by an edge 7 . The edge 7 extends perpendicularly to the first side 3 and the second side 5. The sheet 1 also has a recess 9 which is adapted to be engaged with a key ring (not shown). The recess 9 extends from the first side 3 to the second side 5. The flat piece 1 also has an insertion section 10 with an insertion surface 11.

The edge 7 has a first edge section 15 and a second edge section 17 which run at right angles to one another and touch in the area of the insertion section 10 .

Starting from the area of the edge 7 in which the first edge section 15 and the second edge section 17 touch, the insertion surface 11 of the insertion section 10 has a longitudinal extension L towards the center of the surface of the first side 3 . The longitudinal extent L is preferably in a range of 3-10 mm.

How in particular 1b shows, the insertion surface 11 is inclined at an angle α with respect to the first side 3 . The angle α is preferably <60° and particularly preferably <45°.

How further 1b shows, the edge 7 has a first height h ₁ , which defines the distance between the first side 3 and the second side 5 . The recess 9 is arranged in the area in which the edge 7 has the first height h ₁ . The recess 9 is formed adjacent to the insertion section 10 .

The insertion section 10 reduces the height of the edge 7 by the inclination of the insertion surface 11 to the first side 3 at the angle of inclination α, so that the edge 7 assumes a second minimum height h ₂ in the region of the insertion section 10 . H ₂ is preferably in a range from 0.5 mm to 1.5 mm, in particular in a range from 0.8 mm to 1.0 mm.

The 2a and 2 B show schematically and by way of example a second embodiment of the flat piece 1 according to the invention. The second embodiment differs from the previous one in FIGS 1a and 1b shown first embodiment characterized in that the flat piece 1 is designed as a key. The key 1 has a head section 19 and a shaft section 21 . A serrated profile 21a is formed in the area of the shank section 21, which is set up to be brought into engagement with the pins, in particular core pins of a lock, in particular a cylinder core lock. Both the recess 9 and the insertion section 10 are arranged in the head area 19 of the flat piece 1 designed as a key. Thus, the insertion section 10 and the recess 9 do not hinder the closing operation.

Furthermore, this differs in the 2a and 2 B shown embodiment by the formation of the recess 9. The recess 9 has in 2a shown top view on a rectangular cross section.

The insertion section 10 is, as in the 1a and 1b , located in a region where the first edge portion 15 and the second edge portion 17 touch.

The 3a and 3b show schematically and by way of example a third embodiment of the flat piece 1 according to the invention 2a and 2 B , a flat piece 1 designed as a key. The key 1 differs from that shown in FIGS 2a and 2 B shown embodiment characterized in that the edge 7 is at least partially formed as a circular arc and the insertion section 10 is arranged in the region of the circular arc. The recess 9 is also arranged on the head section 19 adjacent to the insertion section 10 .

The first insertion surface 11 has a longitudinal extent L. The longitudinal extent L describes the maximum extent or length of the insertion surface 11, ie the distance from the edge 7 to the point to which the insertion surface 11 extends in the direction of the center of the surface of the first side 3.

As in particular the side view according to 3b shows, the edge 7 in the area of the insertion section 10 also assumes a minimum second height h ₂ in this embodiment.

The 4a and 4b show schematically and by way of example a fourth embodiment of the flat piece 1. The flat piece 1 differs from that shown in FIGS 1a until 3a shown embodiments in that the insertion section 10 has a first insertion surface 11 which is inclined at an angle α with respect to the first side 3 and has a second insertion surface 13 which is inclined at an angle β with respect to the second side 5 . Between the first side 3 and the second side 5, the edge 7 has a first height h ₁ in a known manner. The edge 7 has a second minimum height h ₂ between the first insertion surface 11 and the second insertion surface 13 .

Otherwise, reference is made to the description of the above figures.

5 shows schematically and by way of example a key arrangement 100 with a key ring 30 and a flat piece 1 connected to the key ring 30, as for example in FIGS 1a and 1b shown. With regard to the description of the flat piece 1 is accordingly on the 1a and 1b referred. The key ring 30 has a distal end 31 and a plurality of threads 33 , the distal end 31 being adapted to be spread apart from the threads 33 for fastening the flat piece 1 and thus to engage in the recess 9 .

The recess 9 is formed adjacent to the insertion section 10 . The size or the diameter of the recess 9 is preferably selected to correspond to the key ring 30 so that it can be brought into engagement with the recess 9 in a simple manner.

A corresponding design is understood here to mean that the inside diameter of the recess 9 is at least 10% larger than the outside diameter of the key ring 30, ie the circumference of all turns in the cross section.

Reference List

1

flat piece

3

first page

5

second page

7

edge

9

recess

10

insertion section

11

first insertion surface

13

second insertion surface

15

first edge section

17

second edge section

19

head section

21

shank section

21a

serrated profile

30

keyring

31

distal end

33

turns

100

key arrangement

h1

first height

h2

second height

L

longitudinal extent

Claims (15)

Flat piece (1) for attachment to a key ring (30), with - a first side (3) and a second side (5) arranged parallel and at a distance from the first side (3), - a substantially perpendicular to the first side ( 3) and second side (5) extending edge (7), which connects the first side (3) and the second side (5), and - a from the first side (3) to the second side (5) extending recess ( 9) for inserting a turn (33) of the key ring (30), characterized in that the edge (7) has a Insertion section (10) with an insertion surface (11, 13) which is inclined at an angle α <80°, in particular at an angle α<60°, relative to the first side (3). Flat piece (1) after claim 1 , characterized in that the insertion portion (10) is formed adjacent to the recess (9). Flat piece (1) after claim 1 or 2 , characterized in that the insertion surface (11, 13) is a first insertion surface (11) and the insertion section (10) further comprises a second insertion surface (13) inclined at an angle β < 80° with respect to the second side (5). is. Flat piece (1) according to one of Claims 1 until 3 , characterized in that the edge (7) has a first edge portion (15) and a second edge portion (17) which runs at a 90° angle to the first edge portion (15), the first edge portion (15) and the touch the second edge section (17) in the region of the insertion section (10). Flat piece (1) according to one of Claims 1 until 3 , characterized in that the edge (7) at least partially forms a circular arc and the insertion section (10) is arranged in the region of the circular arc. Flat piece (1) according to one of the preceding claims, characterized in that the flat piece (1) is designed as a key. Flat piece (1) after claim 6 , characterized in that the key has a head portion (19) and a shank portion (21), and the recess (9) and the insertion portion (10) are associated with the head portion (19). Flat piece (1) according to one of Claims 1 until 5 , characterized in that the flat piece (1) is designed as a key ring. Flat piece (1) according to one of the preceding claims, characterized in that the edge (7) has a first height (h ₁ ) which corresponds to the distance between the first side (3) and the second side (5) and in the region of the insertion section (10) has a second height (h ₂ ) which is in a range from 0.5 mm to 1.5 mm, in particular in a range from 0.8 mm to 1 mm. Flat piece (1) according to one of the preceding claims, characterized in that the lead-in surface (11, 13) is a chamfer inclined at an angle α with respect to the first side (3), and the angle α is < 60°. Flat piece (1) according to one of the preceding claims, characterized in that the lead-in surface (11, 13) is a stepped chamfer which is arranged adjacent to a first edge portion (15) and a second edge portion (17). Flat piece (1) according to one of the preceding claims, characterized in that the insertion surface (11, 13) has a longitudinal extension (L) from the edge (7) to the first side (3) which is in a range from 3 mm to 10 mm lies. Flat piece (1) according to one of the preceding claims, characterized in that the insertion surface (11, 13) extends from the edge (7) to the recess (9). A key assembly (100) comprising a key ring (30) and a flat piece (1) connected to the key ring (30) according to any one of the preceding claims. Use of a flat piece (1) according to one of Claims 1 until 13 for attachment to a key ring (30).

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