ES2657459T3 - Closing device - Google Patents

Abstract

Closing device consisting of a closing bulb (1) and a conjugate key (2), in which the closing bulb (1) has a cylindrical core (3) with a key channel (4) for plugging a post ( 9) of the key (2) extending in an extension direction of said key post, and one or more pin holes (5) leading to the key channel (4) and each of whose holes The plug (5) is fitted with a plug (6) that can be displaced in a scanning direction (A) transverse to the extension direction (S) of the key post, whose pin plug fits with one end of scan (7) in a coding recess (8) that has a wall (10) near the tip of the key and a wall (11) away from the tip of the key, which run each of them at an angle of acute inclination (α α3) with the scanning direction (A) of the pin (6) and have sections (10 ' , 11 ') ending at a vertex (12) of the coding recess (8), in which the key (2) has a stop (13) which, when the key post (9) is completely plugged into the key channel (4), is applied in a stop position to a contract (14) of the cylindrical core (3), in which the inclination angle (α1) of the section (10 ') - adjacent to the vertex ( 12) - of the wall (10) next to the tip of the key is smaller than the angle of inclination (α2) of the rectilinear section (11 ') - adjacent to the vertex (12) - of the remote wall (11) of the tip of the key, characterized in that the scanning end (7) is applied in the stop position only to the rectilinear section (10 ') - adjacent to the vertex (12) - of the wall (10) next to the tip of the key and why the wall (10) next to the tip of the key runs in a straight line from a transition zone (16) - on the front side of the key - to a codification recess contiguous cation (8) to the vertex (12), the wall (11) presenting a first section (11 ') away from the tip of the key adjacent to the vertex (12) and having an inclination angle (α2) which is larger than the angle of inclination (α3) of a second section (11 '') of the wall (11) away from the tip of the key, whose second section (11 '') extends from a transition zone (17 ) to the first section (11 ') to the transition zone (16) to the adjacent coding recess (8).

Description

Closing device

Technical field

The invention relates to a closing device consisting of a closing bulb and a conjugate key, in which the closing bulb has a cylindrical core with a key channel for plugging a key post extending in an extension direction. of said key post, and one or more pin holes that flow into the key channel and in each of which a pin plug is movably mounted in a scanning direction transverse to the direction of extension of the key post, whose boring pin fits an exploration end into a coding recess that has a wall near the tip of the key and a wall away from the tip of the key, which always runs at an angle of acute inclination with the direction of exploration of the plug of borja and present / display sections that end in a vertex of the coding recess, in which the key present ta a stop which, being the key post completely plugged into the key channel, is applied in a stop position to a cylindrical core contract, and in which the scanning end is applied in the stop position only to the rectilinear section - adjacent to the vertex - of the wall near the tip of the key.

The invention also concerns a key for a locking device of this kind, in which the key has a seat post extending in an extension direction of said key seat, with openings of coding open in a direction of cross-sectional exploration of the direction of extension of the key post and provided for the entry of a respective pin plug, in which the coding recess has a wall near the tip of the key and a wall away from the tip of the key, which always runs at an acute angle of inclination with a scanning direction and has sections that end at a vertex of the coding recess, and in which the key has a stop that is applied to a stop position a contract of the cylindrical core.

State of the art

In US 598,469 a closing device is described that can be maneuvered with a master key and with a normal key, and in a cross-sectional representation of this document, in which the normal key is plugged into the key channel of the closing bulb, the axes of the borja pin are represented with some offset with respect to the vertices of the coding recesses.

Document DE 10 2009 000 990 A1 describes a key in which the coding recesses have sections with different inclination angles with respect to the scanning direction. The angles of inclination of the sections that limit directly with the vertex are smaller than the angles of inclination of the sections that have a greater distance with respect to the vertex.

WO 01/38674 A1 describes a closing bulb with a key that has coding recesses on the side of its front that are formed by wall sections of different inclination.

A locking device or a conjugate key for it is already known from DE 10 2009 025 993 B3. In a closing bulb of this class, the boring pin has a conical shaped scanning end. The two walls of the coding recess have two sections of different inclination with respect to the direction of travel of the peg pin, always limiting a section more strongly inclined with the vertex and joining a more weakly inclined section with the respective section more strongly inclined

EP 2 146 030 B1 describes a flat key with an asymmetric coding recess with reference to a central axis. The coding recess has a vertex joined by transition radii that transition to rectilinear walls of the coding recess. The radios are different from each other.

Summary of the invention

The invention is based on the problem of improving a closing bulb and a conjugate key of the exposed generic class in the matter of closure.

The problem is solved with the closing device indicated in the claim or with the key indicated in claim 2. The subordinate claims not only represent advantageous improvements of the invention indicated in the main claims. They are also autonomous solutions to the problem.

First and substantially, constructive measures are taken so that the elastic force with which the boring pin presses with its scanning end against the wall near the tip of the key is converted into a force directed in a direction of extension of The key post. At least one coding recess is provided in which rectilinear sections of the two walls transition to a vertex zone. The scanning end of at least one boring pin must be applied in the stop position of the key to the

rectilinear section. Even when the scanning end is applied only to the wall near the tip of the key, the central axis of the boring pin can run through the apex of the coding recess, since the section of the wall away from the tip of key, directly adjacent to the vertex, has a greater angle of inclination with respect to the direction of travel of the pin of borja that the one of the walls next to the tip of the key. The wall near the tip of the key extends along a straight line that runs without interruption from the vertex to a transition zone where the coding recess transitions to an adjacent coding recess. The wall away from the tip of the key has, similarly to what is known from DE 10 2009 025 993 B3, two sections also preferably rectilinear.

The section located closer to the vertex has a greater inclination with respect to the scanning direction or the direction of travel of the peg pin than a wall section adjacent to it in the direction of a transition zone towards the contiguous coding recess. . The two wall sections limit each other in a transition zone that substantially forms an inflection point. The transition zone is located in the direction of travel of the eraser pin above the eraser hole that houses the eraser pin and especially above a conical section of the probe end of the eraser pin. The angles of inclination of the two sections of the wall away from the tip of the key differ approximately by an angle of 6 to 10 degrees, preferably 8 degrees. The wall near the tip of the key and the second section of the wall away from the tip of the key, which extends from the transition zone towards the first wall section to the transition zone towards the contiguous coding recess, they can present an identical absolute value, especially 45 degrees. As a consequence of the execution according to the invention, the scanning end of the boring pin has a distance to the vertex and to the sections of the wall away from the tip of the key. Therefore, the vertex and the wall away from the tip of the key are not touched by the scanning end.

Upon insertion of the key, the scanning ends of the boring pins pass over some of the walls of the coding recesses and are then elevated by sliding along the most strongly inclined section of the wall away from the tip of the key. Referring to the direction of extension of the key post, the section of the wall away from the tip of the key adjacent to the vertex is less inclined than the section of the wall near the tip of the key adjacent to the vertex. This leads to a reduced force of plugging of the key and a greater force of extraction of the key.

The invention can be realized both in keys in which the coding recess is constituted by incisions of the front side of the key and in keys in which the coding recesses are constituted especially by conical holes in the wide side of the key. In keys with conical shaped holes on the wide side of the key, the different sections of the wall away from the tip of the key can be produced according to a manufacturing program by means of different conical drills or machine tools that have cone opening angles different, being the drilled holes with their axes relative to each other. The center of the hole that produces the first section of the wall away from the tip of the key is slightly spaced, in a direction that moves away from the tip of the key, with respect to the center of the hole with which the second section is produced from the wall away from the tip of the key.

Brief description of the drawings

In the following, the invention is explained in more detail by means of exemplary embodiments. They show:

Figure 1, the longitudinal section of a closing bulb of a first embodiment with a conjugate key plugged into it that has coding recesses on the side of its front,

Figure 2, enlarged, detail II-II of Figure 1,

Figure 3, enlarged, detail III of Figure 2,

Figure 4, a view of the wide side of the key 2, in which all the closing notches have an identical vertex zone in which the wall sections have different angles with a middle vertex line, and in which, For the sake of clarity, only one coding recess is provided with reference numbers,

Figure 5, a wide side view of a key of a second embodiment with coding recesses arranged on the wide side of the key and

Figure 6, a representation - according to Figure 3 - of the second embodiment.

Description of the embodiments

Figure 1 shows a longitudinal section of an embodiment of a closing bulb according to the invention, which has a housing 1 in which a cylindrical core 3 is plugged in, which can be rotated about its axis. The cylindrical core 3 has a key channel 4 for plugging the seat post 9 of the conjugate key 2, the channel extending

of key 4 in the extension direction S of the key post. The key 2 is inserted into the key channel 4 with its seat 9 in the direction of extension of said seat of the key and with the tip 15 in front. The tip 15 engages with a coupling member in the fully inserted position in which a stop 13 of the key 2 collides with a contract 14 of the cylindrical core 3.

In the key channel 4, a large number of pin holes 5, each housing an earthing pin 6, ends. The length of the dowel pins 5 defines the secret of the key. Borja pin 6 has a scanning end 7 that has a tip. The tip may have a pumped section to which a truncated cone section is attached. The scanning ends 7 of the boring pins 6 fit into a respective coding recess 8 of the key seat 9, the coding recesses 8 being carved at different depths in the front of the key seat 9, so that the dowel pins 6 provided with a different length can be accommodated in a release position in which the cylindrical core 3 can be rotated within its housing cavity.

Each coding recess 8 has two walls 10, 11 that substantially converge into each other in a V-shape at a vertex 12. The opening angle of the V-shaped coding recess 8 amounts to approximately 90 degrees. The earthing pins 6 move in a direction A transverse to the extension direction S of the seat post 9 of the key and define a scanning direction A having a 90 degree angle with the extension direction S of the seat post key, the extension direction S of the key post being an imaginary line parallel to the axis of the cylindrical core 3 that runs from the tip 15 of the key to the grip portion thereof.

A wall 10 near the tip of the key runs in a straight line forming an angle of inclination α1 from a transition zone 16 to an adjacent coding recess 8 to vertex 12. The wall 10 near the tip of the key has a section 10 'which joins the vertex 12 directly and is inclined 45 degrees with respect to the scanning direction A. The scanning end 7 of the pin 6 is in the contact coupling position with the section 10' of the wall 10 near the tip of the key.

The wall 10 near the tip of the key is in front of a wall 11 away from the tip of the key. The wall 11 away from the tip of the key has a first section 11 ’which runs in a straight line from the vertex 12 to a transition zone 17, which is a transition point. The first section 11 ’of the wall 11 away from the tip of the key is inclined with respect to the scanning direction A at an angle α2 that is greater than the angle of inclination α1. In the exemplary embodiment, the angle of inclination α2 of the first section 11 ’of the wall 11 away from the tip of the key amounts to approximately 53 degrees.

Between the transition zone 17 to the first section of the wall 11 away from the tip of the key and a transition zone 16 from the wall 11 away from the tip of the key to an adjacent coding recess 8 a second section extends 11 '' from the wall 11 away from the tip of the key that is inclined at an angle of inclination α3 with respect to the scanning direction A. The inclination angle α3 here corresponds to the inclination angle α1, that is to say it is of 45 degrees.

The central axis of the plug 6 runs through the vertex 12. The vertex 12 is in the exemplary embodiment a straight section and extends substantially only over the rounded tip of the scanning end 7 and not over the two shaped sections Conical end of the scanning end 7. The conical shaped section located closest to the tip of the scanning end 7 applies only to the section 10 'of the wall 10 near the tip of the key. The seat 9 of the key being fully inserted in the key channel 4, that is, in a stop position in which the stop 13 is applied to the contract 14, the central axis of the plug 6, which runs through from the tip of the rotationally symmetric scanning end 7, it runs through the vertex 12 and, as the scanning end 7, is distanced from the entire wall 11 away from the tip of the key. The scanning end 7 is applied in the stop position exclusively to the wall 10 near the tip of the key.

The pin 6 is requested in the direction of the vertex 12 by a pin spring not shown. As a consequence of this solicitation, in section 10 'of the wall 10 near the tip of the key attacks a force oriented in the direction of exploration A. The wall 10 near the tip of the key forms an inclined plane and leads to a deviation of force in the direction of introduction of the key 2 in the channel 4 thereof.

When the key is inserted into the key channel, the eraser pin 6 located closer to the mouth of the key channel goes through a plurality of coding recesses 8 and then slides along each of the two walls 10. Because of the small angle α2 of the first section 11 'of the wall 11 away from the tip of the key, the eraser pin 6 is gently removed from its position placed completely inside the coding recess 8.

While the first embodiment shown in Figures 1 to 4 shows a flat key 1 whose coding recesses 8 are carved on the front of the key, the second embodiment shown in Figures 5 and 6 shows a locking device with a flat key 2 which is a reversible surface key and in which the code recesses 8 have been made on the wide side of the key. The recesses of

Coding 8 consists of conical openings with sections of different depth and different angle of inclination of the surrounding walls of the cone.

The manufacturing is carried out in two steps, but it can also be carried out with a machine tool according to a manufacturing program, with a first core-shaped drill that has a large cone opening angle to manufacture a section 11 'of the remote wall 11 of the tip of the key. This is done by producing a hole whose axis passes through point 12 ’of the surface of vertex 12 in a circular manner. In a second hole, the area of the already produced hole located closer to the surface of the wide side of the key is widened first with a second conical drill bit, so that a second section 11 is obtained '' from the wall 11 away from the tip of the key that joins the first wall section 11 'at a transition point 17. This is also done by centering through point 12'. Following this, the drill is deepened with a second conical drill, while moving the shaft in the direction of point 12 '' of vertex 2, which is generated by milling an elongated opening that forms a wall 10 near the tip of the key and opposite to the wall 11 away from the tip of the key, which has a section 10 'to which the scanning end 7 of the pin plug 6 can be applied. The central axis A of the pin plug 6 does not run here through the center of the surface of vertex 12, but it is offset in the direction of point 12 '', that is, offset in the direction of the wall 10 near the tip of the key.

In longitudinal section through the key post, the wall 10 next to the tip of the key that runs on an inner conical surface has a rectilinear path from the vertex 12 to the transition zone 16 to the surface of the wide side of the key post or even a contour coding recess 8. The wall 11 away from the tip of the key runs on two different inner conical surfaces and also extends rectilinear in longitudinal section over two sections 11 ', 11' 'that transition from one to another by way of an inflection point in the area of a transition 17, a first section 11 'of the wall 11 having a greater inclination angle α2 with respect to the scanning direction A having a first angle of the key 11 that the section 10 'of the wall 10 near the tip of the key, to which the scanning end 7 is applied. Also here the scanning end 7 applies exclusively to the wall 10 close to the tip of the key, whereby the force of the boring spring not shown acts in the direction of plugging of the key equally applied here in a stop position.

List of reference symbols

one

Closing bulb

2

Key

3

Cylindrical core

4

Key channel

5

Pin drill

6

Borja plug

7

End of scan

8

Coding recess

9

Key post

10

Wall near the tip of the key

eleven

Wall away from the tip of the key

12

Vertex

13

Stop, top, maximum as a noun, top as an adverb

14

Contract

fifteen

Key tip

16

Transition zone

17

Transition zone

TO

Scanning address

S

Extension address of the key post

α1

Inclination angle

α2

Inclination angle

α3 Tilt angle 10

Claims (6)

1. Closing device consisting of a closing bulb (1) and a conjugate key (2), in which the closing bulb (1) has a cylindrical core (3) with a key channel (4) for plugging a seat post (9) of the key (2) extending in an extension direction of said key seat post, and one or more pin holes (5) leading to the key channel (4) and in each of whose pin holes (5) a pin plug is mounted

(6)

 in a scrollable way in a scanning direction (A) transverse to the extension direction (S) of the key post, whose eraser pin fits an exploration end (7) in a coding recess (8) which has a wall (10) near the tip of the key and a wall (11) away from the tip of the key, which run each of them forming an acute angle of inclination (α1, α2, α3) with the direction of scan (A) of the pin (6) and have sections (10 ', 11') that end at a vertex (12) of the coding recess (8), in which the key (2) has a stop (13) which, when the key post (9) is completely plugged into the key channel (4), is applied in a stop position to a contract (14) of the cylindrical core (3), in which the angle of inclination (α1) of the section (10 ') - adjacent to the vertex (12) - of the wall (10) near the tip of the key is more p small that the angle of inclination (α2) of the rectilinear section (11 ') - adjacent to the vertex (12) - of the wall (11) away from the tip of the key, characterized in that the scanning end (7) is apply in the stop position only to the rectilinear section (10 ') - adjacent to the vertex (12) - of the wall (10) near the tip of the key and because the wall (10) near the tip of the key runs in a straight line from a transition zone (16) - from the front side of the key - to an adjacent coding recess (8) to the vertex (12), presenting the wall (11) away from the tip of the key a first section (11 ') adjacent to the vertex

(12)

and having an inclination angle (α2) that is larger than the inclination angle (α3) of a second section (11 '') of the wall (11) away from the tip of the key, whose second section (11 '') extends from a transition zone (17) to the first section (11 ') to the transition zone (16) to the adjacent coding recess (8).

2. A key for a locking device according to claim 1, wherein the key (2) has a seat post (9) that extends in an extension direction (S) of said key seat post and is provided with recesses of coding (8) open in a scanning direction (A) transverse to the extension direction (S) of the key post and intended to allow the entry of a respective pin (6), in which the recess coding

(8)

 It has a wall (10) near the tip of the key and a wall (11) away from the tip of the key, which run each of them forming an acute angle of inclination (α1, α2, α3) with a direction of exploration

(TO)

 and have sections (10 ', 11') that end at a vertex (12) of the coding recess (8), in which the key (2) has a stop (13) that is applied in a stop position to a contract (14) of the cylindrical core (3), and in which the angle of inclination (α1) of the rectilinear section (10 ') - adjacent to the vertex (12) - of the wall

(10)

 next to the tip of the key is smaller than the angle of inclination (α2) of the rectilinear section (11 ') - adjacent to the vertex (12) - of the wall (11) away from the tip of the key, characterized by that the wall (10) near the tip of the key runs in a straight line from a transition zone (16) - from the front side of the key - to an adjacent coding recess (8) to the vertex (12) and The wall (11) away from the tip of the key has a first section (11 ') adjacent to the vertex (12) and has an inclination angle (α2) that is greater than the inclination angle (α3) of a second section (11 '') of the wall (11) away from the tip of the key, whose second section (11 '') extends from a transition zone (17) to the first section (11 ') to the area of transition (16) to the contiguous coding recess (8).

3.

 Locking device or key according to claims 1 or 2, characterized in that the angle of inclination (α3) of the second section (11 '') of the wall (11) away from the tip of the key has substantially the same value as the angle of inclination (α1) of the wall (10) close to the tip of the key.

Four.

Closing device according to any of the preceding claims, characterized in that the scanning end (7) has a distance to the vertex (12) and the wall (11) away from the tip of the key in the stop position.

5.

Locking device or key according to any of the preceding claims, characterized in that the two walls (10, 11) are incisions on the front side of the key.

6.

Closing device according to any of claims 1 and 3 to 5 or key according to any of claims 2 to 5, characterized in that the two walls (10, 11) are formed by frustoconical holes in the plane of the wide side of the key, the holes having cone opening angles different from each other and said holes being offset from each other in the direction of extension of the key.