KR20020041439A - Locking device, especially for use in motor vehicles - Google Patents

Abstract

The aim of the invention is to improve locking devices, especially for use in motor vehicles, in which a locking cylinder is mounted on at least one door and this locking cylinder is operated by a key (10) which has code tracks (13) on the flat sides (11) thereof. To this end, the profile (14) which typifies the key (10) and which, according to the state of the art, is arranged in the outer areas of the flat sides (11) of the key (10) is realized in the form of a groove (14) that is located on the narrow sides (12) of the key (10) and recessed therein. In addition, a projection is provided on the upper and/or lower narrow side of the key channel of the locking cylinder and, when the key (10) is inserted, the projection engages inside the groove (14') located on the key. The inventive measures permit the height of the key (10) to be reduced since the edges of the flat sides (11) of the key (10) can be brought close to the code path (13). In addition, the key (10) wobbles less by virtue of the fact that the projection is guided in the groove (14') when the key is inserted into the locking cylinder.

Description

LOCKING DEVICE, ESPECIALLY FOR USE IN MOTOR VEHICLES}

A key manufactured by Huf is known as the locking device of the above-mentioned type, in which a code track is arranged on both sides of the key with rotational symmetry on the longitudinal axis of the key. A cutting surface for tying the key is provided for each corner region of both surfaces. Likewise the cutting faces on both surfaces of the key are arranged in rotationally symmetry with each other. The cord track and the cutting surface are arranged in rotationally symmetrical with each other so that both can be inserted into the key channel of the key cylinder in such a state that both can be inserted.

Preferably the key cylinder is arranged in the door or lid of the vehicle, and the key inserted into the key channel is operated to open / lock the operation device for opening the lock or to operate the switch.

For example, in order to ensure that not all keys are inserted into all key cylinders, cutting surfaces are provided in the outer region of the surface, as already realized in the prior art. In this case the cutting planes of the keys are formed and designed differently according to the different key cylinder types and are adapted to the projections / projections in the sidewalls of the key channel formed corresponding to each said cutting plane.

The chord track requires a minimum height defined for manufacturing reasons, which ensures that when the key is inserted into the key channel, the tumbler does not get caught in the chord track and runs smoothly.

The disadvantage of such a lock is that the reduction of the key channel no longer reduces the forcible opening of the lock, because the minimum feasible height of the key is the technically feasible code track and cutting surface. This is because the height is limited.

If the key height is reduced for a known key, a cutting surface disposed outside of the key surface will cut the cord track, and the cord track will open. This loses the functionality of the key.

The invention relates to a locking device in the manner mentioned in the preamble of claim 1. In particular the invention applies to motor vehicles.

Other measures and advantages of the invention can be seen from the dependent claims, the following description and the drawings. In the drawings, the invention is shown as an embodiment.

1 is a schematic perspective view of a key according to the invention,

2 is a cross-sectional view taken along the line II-II 'of FIG. 1,

3 is a cross-sectional view as in FIG. 2 as yet another embodiment of a key according to the present invention;

4 is a cross-sectional view identical to that of FIG. 2 of an internal track key according to the prior art having the same height as the keys of FIGS. 2 and 3;

5 is a schematic diagram of a key cylinder of a vehicle door according to the present invention.

The object of the present invention is to improve the locking device which overcomes the above disadvantages, in the manner mentioned in the preamble of claim 1. This object is achieved in accordance with the invention by the measures mentioned in the characterizing part of claim 1, which measures have the following importance.

According to claim 1, the cutting surface used to distinguish the various types of keys is arranged in the form of a groove on at least one of the narrow sides of the keys. The above action may cause the height of the key to continue to be lowered because the cord track may no longer be cut by the cutting surface. As a result, the key cylinder is reduced as much as possible, so that the tool for forced opening must also be smaller per mm in order to be inserted into the key channel, and the force exerted is also smaller, making the key cylinder more secure against forcible opening. do.

Furthermore, by placing grooves on one or both sides of the narrow side of the key, the key according to the invention reduces loosening, resulting in wear of the key cylinder and tumbler even when the key is repeatedly inserted and operated in the key cylinder. There is an amazing effect that is much reduced.

Claim 2 relates to a groove closed along three longitudinal surfaces in a groove for tying the key, the groove being closed inside the key and along both surfaces of the key.

As shown in claim 3, if the groove is arranged on both surfaces of the narrow side of the facing key, the key can be inserted into the key channel with both surfaces insertable. In this case it is one spiral key.

Furthermore, according to claim 4, it is also important that when the key is inserted into the key channel, the protrusion / protrusion which is engaged with the groove of the key is arranged at the position of the corresponding key channel.

According to claim 5, it is important to provide a stop surface at the tip of the groove disposed on the key, so that the insertion depth of the key is limited by impinging the stop surface against the head surface arranged on the projection.

According to claim 7, various types of keys can be manufactured by embossing grooves on a plurality of surfaces, in particular, while not only the shape of the surface but also the number and angles of the surfaces can be modified in all types of keys.

The diversity is further enhanced by mixing the radial surface cross section and the flat surface cross section at the groove surface.

According to claim 9, it is important that the protrusion / projection entering into the groove has a side as at least part which conformally conforms to the surface cross section of the key.

Due to the various embossments in the grooves and the corresponding embossments in the key channel, multiple auxiliary keys can be assigned to one primary key in one locking system.

In particular the locking device according to the invention relates to a key cylinder of an internal track key or a drill hole key.

The locking device according to the invention comprises a single key cylinder 20, in which a rotatable cylinder center (not shown here) is normally carried out by a number of spring loaded tumblers 27 (not shown here). It is blocked. In this case it is a small plate tumbler. The tumbler 27 is adjusted so that when the original corresponding key 10 with the cord track 13 is inserted into the surface 11, it no longer protrudes outside the outer surface of the center of the cylinder. The center of the cylinder is rotatable within the cylinder housing. As the inserted key 10 rotates, the user can open or lock the operating device using the locking device in accordance with the rotation direction of the key 10.

When the key 10 is pushed into the key channel 21 of the key cylinder 20 shown schematically in FIG. 5, the tumbler 27 arranged in the key channel 21 is the key 10 in this embodiment. Penetrates through the cord tracks 13 disposed on both surfaces 11. When the key 10 is inserted into the key cylinder 20, the tumbler 27 moves corresponding to the surface shape of the guide surface 16 disposed along the cord track 13. When the key 10 is in the final position, the tumbler is in a state that allows the cylinder center of the key cylinder to rotate.

1 to 3, grooves 14 'and 14 "are arranged on both narrow surfaces 12 of the key 10 according to the present invention. The grooves 14' and 14" are arranged in series. Has a relief 17 consisting of various surface cross-sections 18, 19. A plurality of grooves of various types are formed by the series of various surface cross-sections 18 and 19, so that not all the keys 10 can be fully inserted into all the key cylinders 20 according to the manufacturing method provided.

As shown in FIG. 2, in the embodiment of the primary key in one locking system, in addition to the flat surface section 19, a cylindrical surface cross section 18 is formed which forms an embossed 17 of the groove 14 ′. . In the case of the secondary key 10 ′ shown in cross section in FIG. 3 belonging to the same locking system to which the primary key shown in FIG. 2 belongs, only a flat surface section 19 is arranged at the relief of the groove 14 ″. 3. The auxiliary key 10 'in accordance with Fig. 3 cannot be inserted into a primary key cylinder which is assigned only to the main key 10 shown in Fig. 2. Alternatively, the main key 10 is inserted in the auxiliary key 10'. It is possible to insert into the key cylinder assigned to and to operate the key cylinder.

As a counterpart to the groove of the key, a projection 24 disposed in parallel with the longitudinal line of the key channel 21 is disposed on the narrow surface 22 of the key channel 21 of the key cylinder 20 (FIG. 5). Reference)

On the surface of the protrusion 24 arranged in the key channel 21, an outer region 26 is arranged which runs parallel to the longitudinal axis of the protrusion. In this case, the relief on the outer surface of the projection 26 is a negative copy of the relief 17 in the groove of the key 10 that fits the key cylinder 20. Therefore, when the key 10 is pushed into the key channel 21, the provided protrusion 24 fits into the groove 14 ′ in a formally coupled manner.

Of course, when the main key is inserted into the key channel of the auxiliary key cylinder having the same protrusion contour, it can be seen that only a partial coupling is made between the groove and the protrusion corresponding to the groove. Thus, the main key 10 according to FIG. 2 can be inserted into a key cylinder with an embossed protrusion formed in the recess 14 ″ of FIG. 3.

In Fig. 4 a cross section of a key 10 " according to the prior art is shown, in which the height of the key is reduced while the depth of the cutting surface 14 for tying the key remains unchanged. In this case the cutting Faces 14 respectively open the chord tracks 13 at locations at the ends of the surface 11 where the chord tracks 13 are adjacent, if the maximum top height of the chord tracks 13 is limited, at the same time The likelihood of deformation of (13) will also be significantly reduced: keys with various chord tracks 13 will be released much less, and if the cutting plane is limited to any given depth, due to the reduction of cutting plane 14 The same disadvantage arises, as a result, in this case too, the possibility of modification to the key type is significantly limited.

Claims (11)

Consisting of a key cylinder 20 with a key channel 21 in the at least one door 30 or lid on the side of the vehicle and a key 10 inserted into the key channel 21 of the key cylinder 20. Lose, The key 10 has a surface 11 and a narrow surface 12, on which the cord track 13 is arranged, In addition to the code track 13, the key 10 is arranged with at least one cutting surface 14 for tying the key 10, In the locking device for a vehicle, the key cylinder 20 is switched from the locked position by the key to the open state and vice versa, or one switch is operated by the key. A cutting face 14 for tying the keys 10; 10 'is inserted into the keys 10; 10' on at least one narrow face 12 in the form of a groove 14 '; 14 ". Locking device. The method of claim 1, And the groove (14 ', 14 ") is closed towards the narrow surface (12) of the key (10; 10'). The method of claim 1, The groove (14 ', 14 ") is characterized in that it is disposed on two narrow surfaces (12) facing each other, in the key (10; 10'). The method of claim 1, The protrusions 24 are arranged on the upper and / or lower narrow face 12 in the key channel 21, which protrusions 14 ′, 14 ″ of the keys 10; 10 ′ inserted into the key cylinders. Locking device). The method according to any one of claims 1 to 4, A locking device, characterized in that the surface end (15) arranged in the groove (14 ', 14 ") and the leading surface arranged in the protrusion (24) determine the insertion depth of the key (10, 10'). The method according to any one of claims 1 to 5, The cord track (13) is characterized in that it is restricted upwards and downwards by the guide surface (16). The method according to any one of claims 1 to 6, The groove (14 ', 14 ") is characterized in that it has a multi-surface embossed (17). The method according to any one of claims 1 to 7, In said multi-surface relief 17, a cylindrical surface cross section 18 and a flat surface cross section 19 are arranged side by side in order according to the type of key. The method according to any one of claims 1 to 8, The protrusion 24 is at least partly with the surface sections 18, 19 disposed in the grooves 14 ', 14 "of the key, with the keys 10, 10' inserted in the key cylinder 20. And a form-coupled outer surface (26). The method according to any one of claims 1 to 9, The groove (14, '14 ") is characterized in that the primary key and the secondary key of one locking system are typified. The method according to claim 1 to 10, The key (10, 10 ') is a lock, characterized in that the spiral key.