TWI768269B - A cylinder lock unit and an associated key - Google Patents

Abstract

A cylinder lock unit provided with a rotatable key plug (300) and a connection for transferring a torque to a lock mechanism when a key plug is rotated. The cylinder lock unit includes a housing (200) having an upper part (220), provided with a central row of locking pins in associated cavities, and a lower part (240) with a cylindrical bore accommodating the rotatable key plug. A back region (L1) of the key plug has a minimum length of at least 50% of the total length thereof. The adjoining front region (FR1) has a maximum length of 50% of the total length and accommodates, in addition to the central row of locking pins, at least one side locking mechanism (351a, 351b, 351c) which is located in its entirety within the front region of the key plug and interacts with the lower part of the housing. The invention also relates to a key (40) for unlocking the lock unit.

Description

Cylindrical lock unit and associated key

The present invention relates to a cylindrical lock unit as described in the preamble of claim 1 of the scope of application.

The present invention also relates to a lock and key system comprising a cylindrical lock unit as described above and a key for unlocking the cylindrical lock unit. The key includes a grip and a key blade.

Furthermore, the present invention relates to a key for unlocking a cylindrical lock unit with a rotatable cylindrical key socket, which has a key slot and is limited to a front area of the rotatable cylindrical key socket. At least one side locking mechanism.

Such lock and key systems, cylindrical lock units and keys are often used in locking systems with a large number of lock units, eg used as door locks.

In general, however, there are no cylindrical lock units on the market that are really highly secure and have a compact structure and enough space to make it possible to accommodate additional lock assemblies in the rear area of the key socket. In fact, there is a need to make room for such additional lock assemblies, which Components such as a portion of a torque-transmitting link, a blocking mechanism for preventing unauthorized key shafts from being fully inserted into the key slot, or some electronic component that facilitates the effectiveness of the cylindrical lock unit.

Since this additional lock assembly may be located in the rear area of the key socket, there is no room for conventional side bars or other kinds of side tumbler mechanisms, which typically need to extend longitudinally along the full length of the key socket .

In a prior art lock construction of a similar design disclosed in US Pat. No. 6,981,396 (Kim) and also disclosed in the service manual "CX5 HIGH SECURITY CYLINDERS - small format interchangeable core service manual", the key socket has a side locking mechanism that includes a Many side locking tumblers interact with the side bars. The side lever also interacts with a fixed sleeve (cylindrical operating body) extending along the entire length of the key socket. Correspondingly, on the side where the side bars are provided, the key socket is solid almost up to the rear end, and the associated tines in the associated interlocking unit will be sheared off in order to accommodate the key socket and its safety Full length side bars. In this configuration, by rotating the key socket with the inserted key, the torque to be transmitted to the lock unit is achieved via a single tine on the opposite side of the key socket.

Another similar prior art document is published US Patent Application No. US 2002/0056301 A1 (Theriault), in which the cylindrical lock cylinder includes two side bars, which are respectively arranged on two sides of the key slot , the cylindrical lock cylinder also includes a locking portion that is movable relative to the side bar and lock housing in response to the insertion of the key body with the correct teeth. In this prior art embodiment, the side bar extends substantially along the full length of the key socket.

There is always a need for further improvements, the main object of the present invention is to increase security and to provide a cylindrical lock unit with a high security side locking mechanism that is difficult to manipulate without the use of a properly cut key While opening the lock, it also allows the key socket to potentially accommodate additional lock components in the rear area, such as part of a torque-transmitting link, a blocking mechanism for blocking full insertion of an incorrectly cut key body, or a facilitation lock The electronic components of the operation of the unit.

In fact, the present invention is a further development of an earlier invention for which a U.S. application and an international patent application (PCT/EP2018/062713) have been filed, but as of the filing date of this application, these pending patent applications have not yet been filed. been made public. The present invention differs from the earlier invention disclosed in the earlier application in that it is novel in that the "housing" of the lock unit (as the term is used in the earlier application) is integrated with or permanently placed within the housing of the lock unit, and There is no separation between the outer housing and the inner replaceable lock "cylinder". Instead, the housing and overall structure are more like a lock unit as disclosed in the specification of US Pat. No. 8,720,241 (Widén), the housing is divided into an upper half with several locking pins and a chamber with a rotatable key socket the bottom half of the hole. Another different distinguishing feature of the present invention is that the key socket has a rear area, on both sides of the key slot in the rear area has a side portion, each side portion is block-shaped or accommodates at least one additional lock component, such as torque transmission Part of a connector such as a screw that engages a threaded hole in the side, a blocking device that prevents an incorrectly cut key from being fully inserted into the keyway, or an electronic device that assists the correct operation of the cylindrical lock unit.

The above object is achieved by providing a cylindrical lock unit as described in the opening paragraph of this text and having the technical features as described in the main part of claim 1 of the scope of the application.

Contrary to some prior art constructions, there is direct contact between the side locking tumbler and the associated key without any other moving parts in between. In this way, the structure will be relatively simple and reliable. Since there are different code positions for the locking tumblers on each side in the column, the number of possible combinations of these code positions can be large, thus providing a high level of security. Even so, there is space on each side of the keyway located in the relatively long rear area of the key socket to make it possible to accommodate additional lock assemblies separate from the coded locking bolts and tumblers.

On the other hand, the relatively short front area of the key socket is preferably fairly compact and generally solid, except for the key slot, the hole for the locking pin, and any recesses or holes for receiving the side locking mechanism or mechanisms .

Due to the above construction of the cylindrical lock cylinder, and the relatively short front area of the rotatable key socket having a maximum length of 50% of the full length of the key socket, the key socket is connected to the surrounding housing by the side locking mechanism located entirely in the front area of the key socket. There will be a safe and unique interaction between the two, but there is still room left for the possibility of accommodating an additional lock assembly in the rear area of the rotatable key socket.

Preferably, there is a relatively short (axial) side locking mechanism on each side of the keyway located in the forward region of the key socket. It is then possible to accommodate at least 4 (two or more on each side) independently movable locking tumblers separate and independent from the conventional central locking bolt. However, it is also possible to provide only one side locking mechanism on one side of the key slot.

The length of the area in front of the key socket in which at least one side locking mechanism is fully located is therefore relatively short, eg 50%, about 40% or about 30% of the overall length of the key socket. Nonetheless, thanks to the compact structure of the side locking mechanism, it still offers a large number of code combinations and the high security of a cylindrical cylinder.

It turns out that each longitudinal row consisting of side locking tumblers on one or both sides of the key socket may contain at least two and preferably at least 3 (or even more) side locking tumblers.

Preferably, additional lock assemblies on each side of the key slot, possibly housed in the rear region of the key socket, may form part of a torque-transmitting connection, such as for connection to and in an associated interlocking unit. A threaded hole into which the fastening screw of the door locking mechanism engages, or a blocking device that prevents the complete insertion of an incorrectly cut key body, or an electronic device that assists the correct operation of the cylindrical lock unit.

Furthermore, according to the present invention, it is possible to provide the above-mentioned cylindrical lock unit in combination with a key for unlocking the cylindrical lock unit, the key comprising a grip portion and a key body, wherein the key body on at least one side has a A wavy side code pattern consisting of a row of at least two side coding portions generally confined within the longitudinal half of the key body closest to the grip, the wavy code pattern Adjoined by a straight side groove extending towards the free end of the key body.

Furthermore, the present invention relates to a key for unlocking the above-mentioned cylindrical lock unit, the key body on at least one side of the key having a wavy side code pattern consisting of a row of at least two side code portions, the at least The two side coding portions are generally confined within the longitudinal half of the key body closest to the grip, the wavy side code pattern adjoins the straight side groove extending to the free end of the key body, and the wavy side code pattern is preferably located in the The ridges of the side grooves whose bottoms are cut in at least one side surface of the key body.

Further advantageous features of the invention are set forth in the appended patent claims and also appear in the detailed description of some preferred embodiments with reference to the accompanying drawings.

40: key

41: Side code style

42: Raised teeth/upper edge

100: Cylindrical lock unit

141, 141': side code style

142: Marginal code style

151: Cam member/rear cam

152a, 152b: Fastening screws

200: Shell

220: Upper part of the shell

221a-221g: Parallel holes

222: Vertical cover

231a-231g: Lower locking pin

231a'-231f': Central locking pin

232a-232g: Upper locking pin

235a-235g: Coil Spring

240: lower half of the shell

242: Recess or hole

243, 243": Longitudinal recess or groove

300: rotatable key socket

310: Front Flange

320: key slot

331a-331g: Vertical holes

351a-351c: Coded side locking tumblers

361a-361c: Spring

371a-371c: Vertical holes

400, 400': Key socket

420: key slot

451a, 451b, 461a, 461b: Side locking mechanism

500: Key socket

551a, 551b: Side locking tumblers

554: Lateral Fingers

555: Coding recess

580: Sidebar

580a: lugs

581: Spring

651b: Side locking tumbler

654: Lateral Fingers

655: Material part

656, 657: Recess

680: Sidebar

680a: Slotted hole

751b: Side locking tumblers

754: Lateral Fingers

755: Recess

780: Sidebar

800, 800': Key socket

851a'-851d': Side locking tumblers

880, 880': Sidebar

900: Key socket

920:Key slot

951a-951c: Side locking tumblers

980: Sidebar

981: Spring

FR1, FR2, FR3: Front area

L1, L2, L2': rear area

L3: length

R: arrow

Figure 1 is a perspective view of a lock unit and a key that can be inserted into a key socket of the lock unit according to an embodiment of the present invention; Figure 2a is an expanded view of various components of the lock unit of Figure 1; Figure 2b is from another One side shows a perspective view of the key of Fig. 1; Fig. 3 is a longitudinal sectional view of the lock unit of Fig. 1 with the key inserted into the key socket; Figures 1 and 2a are cross-sectional views of the lock unit; Figures 5a, 5b, 5c, and 5d are bottom, front, top, and longitudinal sections of the key socket of Figure 2a, respectively Figures; Figure 6 shows a key socket of an embodiment similar to Figure 5d, but with 4 side locking tumbler holes in a row; Figures 7a, 7b, 7c and 7d A second embodiment of a key socket similar to one of Figures 5a to 5d is shown, wherein there are shorter side locking mechanisms on each side of the key socket, and two side locking mechanisms on each side locking mechanism. Figures 8a, 8b, 8c and 8d show a key socket of a modified embodiment similar to one of Figures 5a to 5d, with only 6 locking bolts (instead of the 7 locking pins of the previous embodiments) and two side locking tumblers on each side of the key socket; Figures 9a, 9b, 9c, 9d, 9e, 9f, 9g and 9h illustrate in different views a third embodiment having a Side locking mechanism that cooperates with two side locking tumblers on one side of the keyway; Figure 10 illustrates a modified embodiment of the side locking mechanism having a side lever that is connected to a side lever that can be moved up and down Several side locking tumblers that move and also rotate about their own axis interact; Figure 11 shows another modified embodiment, in which the side locking tumblers are each provided with longitudinally displaced fingers; Figures 5a, 5b, 5c and 5d Figures 12a, 12b, 12c and 12d show 3 side locking tumblers and a side bar on one side of the keyway Interactive embodiment; Figures 13a and 13b illustrate a fourth embodiment in cross-section and perspective, with two side bars disposed on either side of the key slot of the key socket; Figure 13c Figures 14a and 14b illustrate a modified embodiment of the key, which has Two different side code patterns on each side of the key body.

The first embodiment of the lock unit 100 of the present invention is shown in Figs. 1, 2a, 2b, 3, 4, 5a, 5b, 5c and 5d As shown, the lock unit 100 includes a cylindrical housing 200 having a rotatable key socket 300, with an associated key 40.

The cylindrical housing 200 has a threaded rear end and a slightly tapered front flange.

As is well known, the lock unit 100 is typically permanently installed in a door or the like in order to cooperate with a door locking mechanism. Cylindrical housing 200 includes a solid upper half 220 and a lower half 240 forming a cylindrical bore that receives rotatable key socket 300 .

The rotatable key socket 300 is integrally formed and is used to transmit torque to the locking mechanism when the socket is turned. In this particular embodiment, as can be seen in Figure 2a, this is achieved with a torque-transmitting connection comprising a cam member 151, which is secured to the key socket 300 by means of two set screws 152a, 152b, the set screw 152a , 152b are engaged with two threaded holes located in the rear area L1 of the key socket 300 and respectively located on both sides of the key slot 320 .

It should be noted that the torque-transmitting connection may be formed by other mechanical members, such as a recess at the rear end of the key socket that couples a mating member that forms a locking mechanism in a door or some other item to be locked in the closed position. a part. If so, the rear area L1 of the key socket 300 could be used for some other lock assembly, as described above. It is also possible to have the rear area of the key socket be a block of material on each side of the key slot, as shown in Figure 13c.

The solid upper half 220 (see Figure 2a) of the housing 200 has a central row of parallel holes 221a, 221b, 221c, 221d, 221e, 221f and 221g, the number of holes in this particular embodiment being seven. As shown below, other common embodiments have a central row of 6 holes. On the upper side, the longitudinal cover plate 222 will generally cover the holes 221a etc. from above and hold the same number of upper and lower locking pins 231a etc., 232a etc. and associated springs 235a etc.

The key socket can also be seen in Figures 3, 4, 5a, 5b, 5c and 5d. The outer diameter of the cylindrical key socket is slightly smaller than the inner diameter of the bore in the lower housing half 240 , so that the key socket 300 can rotate relative to the housing 200 . However, the possible rotational movement of the key socket depends on the position of the locking pins 231a, 231b, 231c, 231d, 231e, 231f, 231g shown in Fig. 2a below, and the lower locking pins 231a etc. can be in the corresponding vertical holes 331a , 331b, 331c, 331d, 331e, 331f, 331g, vertical holes 331a, etc. are arranged in a central longitudinal row on the upper half of the key socket 300. These vertical holes 331a are equally positioned above the central keyway 320 . The lower locking pin 231a, etc. are associated with the top or upper pins 232a, 232b, 232c, 232d, 232e, 332f, 232g (labeled together as 232a-232g in Figure 2a) and corresponding coil springs 235a, 235b, 235c, 235d , 235e, 235f, 235g (marked together as 235a-235g in Figure 2a) are fixed.

Correspondingly, in key socket 300, a central row of corresponding holes 331a, 331b, 331c, 331d, 331e, 331f, 331g would house lower locking pins 231a, 231b, 231c, 231d, 231e, 231f, 231g.

In normal operation of the cylindrical lock, cutting the correct key 40 will operate the cylindrical lock unit to rotate the key socket 300 and turn the rear cam 151 .

According to the present invention, the rear area of the key socket 300 (L1 in Figure 5d) is relatively long, that is, at least 50% of the full length of the key socket (L1+FR1) measured from the rear end to the front flange 310, whereas the key The front area of the socket (FR1 in Figure 5d) is relatively short, ie at most 50% of the full length. However, the front region FR1 should be long enough to accommodate a side locking mechanism comprising a longitudinal row of at least two side locking tumblers.

As mentioned above, the rear area (L1) of the key socket is intended to accommodate the rear of the central row of holes 331a-331g above the key slot 320, and possibly an additional lock assembly that is part of the torque transfer connection, Such as set screws 152a, 152b on either side of the keyway, or blocking mechanisms to prevent full insertion of an incorrectly cut key body, or electronic components that facilitate or assist correct operation of the lock unit.

Importantly, the key socket 300 is provided with a side locking mechanism which is located on at least one side of the key slot 320 and is completely confined within the front region FR1 longitudinally in front of the rear region L1. Preferably, this front region FR1 is substantially solid, except for the keyway, the hole for the lower locking bolt, and any recesses and holes for receiving the side locking mechanism itself. According to the invention, the side locking mechanism comprises at least two independently movable side locking tumblers, which provides a high degree of security, with at least 3 different code positions for each locking tumbler and a plurality of different A code combination is used for these side locking tumblers.

In the above-described embodiment, with reference to Figures 3, 4, 5a, 5b, 5c, and 5d, the side locking mechanism is included in the key slot 320 of the key socket 300 in the solid front area Three coded side locking tumblers 351a, 351b, 351c arranged in a row on one side (Fig. 2a and Fig. 5a). The three locking tumblers are located entirely within this forward region and also radially inward of the lower half 240 of the housing. The side locking mechanisms 351a, 351b, 351c are immediately adjacent the front end flange 310 of the key socket 300, the advantage of this location being that the side locking mechanisms will primarily interact with the The lower half 240 of the housing interacts. Other specific embodiments are also possible, as described below.

The 3 side locking tumblers 351a, 351b, 351c are springs 361a, 361a, 371c located in associated vertical holes 371a, 371b, 371c (labeled together 371a-371c in Figure 2a), 361b, 361c (labeled together 361a-361c in Figure 2a) are biased a certain lateral distance from the keyway 320 so that the protruding fingers of the side locking tumblers 351a-351c enter the keyway and the The fingers will cooperate with the wavy side code pattern 41 on the key of the associated key 40 (Fig. 2b). When the key 40 is inserted into the key slot 320, the locking tumblers 351a etc. move up and down in response to their contact with the side code pattern 41. The lower ends of the coded side locking tumblers 351a etc. would then interact with the associated recesses or holes 242 in the lower half 240 of the housing 200 . At the same time, the many bits of the edge portion 42 on the key 40 interact with the central row of locking pins 231a and the like. Turning the key 40 to rotate the key socket 300 and unlock the cylindrical lock unit is only possible if the lower and upper locking pins 231a etc. and 232a etc. and the 3 side locking tumblers 351a etc. are all properly positioned within the circumference of the key socket 300.

Importantly, the side tumblers 351a and the like are movable independently of the central locking pin 231a and the like. Thus, if the cylindrical lock is manipulated using the so-called bumping technique, it is possible to locate all the locking pins 231a, but it would be more difficult to simultaneously manipulate the coded side locking tumblers 351a etc. into their respective coded positions as well. Therefore, the side locking mechanism 351 provides a high degree of security of the cylindrical lock cylinder.

The interaction between the side locking tumbler 351b of the key socket 300 and the surrounding lower half 240 of the housing is further illustrated in Figure 4, which is a cross-sectional view of the embodiment of Figure 2a.

In Figure 4, the side locking tumbler 351b is in a fully retracted position within the key socket, where its ends are located on the cut line between the key socket 300 and the lower peripheral half 240 of the housing, and The central latch 231f is also positioned so that its upper end is flush with the cut line. here When in position, the key socket can be rotated or turned as long as all other central pins and coded side locking tumblers are also confined within the key socket.

Figures 5a, 5b, 5c, 5d illustrate the basic (first) embodiment in which three side locking tumblers 351a, 351b, 351c in a longitudinal row are located on one side of the key slot 320 in the associated holes 371a, 371b, 371c, as described above. In this embodiment, since the side locking tumblers 351a, 351b, 351c each have 3 possible codes, the total code number of the side locking mechanism would be equal to 3x3x3=27 in this case.

In a modification of the first embodiment, as shown in Figure 6, there are 4 side locking tumblers in a longitudinal row in associated holes 371a, 371b, 371c, 371d. The rear area L1 and the front area FR1 of the key socket are as long as in the previous embodiment.

In the second embodiment illustrated in Figures 7a, 7b, 7c and 7d, the structure is similar to the first embodiment (all reference numerals start with the numeral 4 instead of 3), but in On each side of the keyway 420 is a row of coded side locking tumblers, each row consisting of two independently movable side locking tumblers 451a, 451b and 461a, 461b, respectively. Each side locking tumbler will interact with the surrounding lower half of the housing in the same manner as shown in Figure 4. Thus, there are 4 side locking tumblers that are movable independently of each other, each side locking tumbler being located in one of at least 3 different height positions. Therefore, the number of possible code combinations is even higher in this particular embodiment (at least 3x3x3x3=81).

The rear area L2 of the key socket 400 is a little longer in this second embodiment, and the front area FR2 is shorter, and the full length L2+FR2 is the same as that in Fig. 5d.

In the modified version of the second embodiment shown in Fig. 8a, Fig. 8b, Fig. 8c and Fig. 8d, the structure is exactly the same as that of the embodiment shown in Fig. 7a, etc., except The number of central locking pins 231a', . . . 231f' (Fig. 8c) of the key socket 400' is 6 instead of 7 and the overall length of the key socket is slightly shorter. However, the length of the rear area L2' is slightly greater than half the length of the key socket.

In the third embodiment shown in Figures 9a, 9b, 9c, 9d, 9e, 9f, 9g, 9h and 10, the central locking bolt The number is again seven, which is the same as most of the previous embodiments, but the side locking mechanism is different, there are only two side locking tumblers on one side of the key socket 500, these two side locking The tumblers 551a, 551b cooperate with the relatively short side bars 580 (Fig. 9d). Side locking mechanisms with side bars are known, but not in the context that the key socket of the cylindrical lock unit has a rear area reserved for possible additional lock assemblies. This additional lock assembly, such as two relatively long set screws, is used to secure the cam member or the like in the rear region of the key socket. The side bar 580 is generally held in a position protruding laterally beyond the outline of the key socket 500 by means of springs 581 (see Fig. 9d ) in the longitudinal recesses or grooves 243 (see Fig. 9a ), which are located on both sides Lock between tumblers to save longitudinal space. In this position, the side bar will align with the corresponding groove 243 in the lower half 240 of the housing 200 and thereby effectively lock the key socket against rotation. However, with the correct key 40 cut when the side locking tumblers 551a and 551b are in certain vertical positions, the side bar 580 can be moved laterally against the action of the spring 581 to a retracted position. In this retracted position, the side bar 580 is no longer located in the groove 243 . Thus, by turning the key 40, the side bar 580 retracts and allows the key socket 500 to rotate. The lugs 580a of the side bars then enter the coded recesses 555 in the cylindrical surface of the side locking tumblers 551b. This interaction is clearly visible in the enlarged view of Figure 9c, which also illustrates how the lateral fingers 554 of the side locking tumbler 551b would be raised into the correct position by the side code pattern on the key 40. through With the side lever, the side locking mechanism will provide a high degree of security, since it is difficult to manipulate the side locking tumblers 551a, 551b in order to release the lock. In this particular embodiment, when there are only two side locking tumblers in a row, the rear region of the key socket 500 may have a longer length L3, as shown in Figure 9h, leaving only a relatively short front region FR3.

As shown in Figures 10 and 11, the respective side locking tumblers 651b, 751b may interact with the side bars 680, 780 in different ways, either via fingers that rotate along an axis, or non-rotatable and longitudinally displaced fingers. In Figure 10, the side locking tumbler 651b is rotatable between two rotational end positions, as indicated by arrow R. The material portion 655 between the two adjacent recesses 656, 657 of the cylindrical surface of the side locking tumbler can be nested into the corresponding slot 680a of the side bar 680. In the case where the coding recesses 656, 657 have two or three rotational positions and three or more levels, there will be six or more code combinations for each locking tumbler 651b. In this case, the code pattern on the side of the key must be assembled to accommodate two or three different pivot positions of the lateral fingers 654.

Likewise, in Figure 11, the lateral fingers 754 of the side locking tumblers 751b are displaced longitudinally (along the longitudinal axis of the keyway of the key socket) into one of three encoded positions. Thus, while there are several possible positions of the recess 755 on the cylindrical surface of the tumbler, there will also be a large number of code combinations, such as 9 or more, per side locking tumbler.

In a modification of the third embodiment shown in Figures 12a, 12b, 12c and 12d, there are 3 side locking tumblers 951a, 951b, 951c (the key in the key socket 900 on one side of slot 920), side locking tumblers 951a, etc. interact with slightly longer side bars 980 biased by springs 981.

In the fourth embodiment shown in Figure 13c, there are two relatively short side locking mechanisms, one on each side of the keyway, and each side locking mechanism has an adjacent side locking mechanism The side bar 880 of the front end flange of the key socket 800. This is an advantageous embodiment in which there are many code combinations, but an extremely compact structure that is limited to a relatively small portion (less than 20%) of the overall length of the key socket. The rear area has a relatively long length L2, the rear area is block-shaped, except for the rear of the central row consisting of holes or holes, and the front area FR2 is relatively short, but if necessary, the front area of the key socket can be similar to Figure 9h. The specific example (FR3) is as short.

Finally, a fifth embodiment is shown in Figures 13a and 13b, in which a key socket 800' is provided on each side of the keyway of the solid front end region FR1 with a Four side locking tumblers 851a', 851b', 851c', 851d' form a row. Here, since the two side locking mechanisms are arranged on the two sides of the key slot, and each side locking mechanism has a row of four side locking tumblers, there will be numerous code combinations as a result.

Figure 13b also illustrates a housing for the fifth embodiment, which is similar to that shown in Figure 2a, however it is for a configuration with two side bars 880'. Here, each side bar 880' in the locked position is each disposed in a respective groove 243" in the lower half of the housing.

The side rods shown in Figures 9a-9h, 10, 11, 12d, 13a, 13b, 13c are advantageous because the springs that push the side rods radially outward (eg, 581 in Fig. 9d) are each located between a pair of side locking tumblers, allowing the end of the side bar to be very close to the front of the key socket, thereby saving space. Preferably, one of the springs should be located between two adjacent side locking tumblers closest to the front end flange of the key socket and cooperate with the side bar. When only the two side locking tumblers work in conjunction with the side bars, As shown in Figures 9h and 13c, there is only a single spring, which makes the side locking mechanism compact.

Also, in all embodiments, the hole (eg, 371c) for receiving the side locking tumbler (eg, 351c) closest to the front of the key socket is closer to the front flange than all of the central holes (eg, 331a-331g) , whereby the space for the side locking mechanism can be efficiently used, so that in the front zones FR1, FR2, FR3, which are at most half the full length of the key socket and possibly shorter, there is room for at least two and possibly 3 or 4 The side locking tumblers are lined up.

The associated key 40 has a wavy side code pattern 41 (cf. Figure 2b) with a coded portion that interacts with the side locking tumbler. All of the side code patterns 41 of the key 40 are generally located within the half key body closest to the key grip. In addition, the side coding portion closest to the grip in this pattern 41 will be closer to the grip than all the tines 42 on the edge of the key which interact with the central row of the locking pins of the cylindrical lock. As such, these keys 40 will be different from all prior art keys.

Referring to Figure 2b, the key may also be provided with a wavy side code pattern 41 on only one side of the key body. The other side can just be flat or have some other code style or configuration.

Embodiments of different code patterns 141 and 141' on both sides of the key body are illustrated in Figures 14a and 14b.

In Figure 14a, the side code pattern 141' on one side of the key body is formed by two parallel upper and lower walls of a side groove having a first part and a second part, the first One part is confined in the longitudinal half of the key body closest to the key grip and has two side codings, the second part forms a straight side groove without any side codings.

As shown in Figure 14b, the other side of the key also has a first part and a second part, the first part has a side coding part limited to the longitudinal half of the key body closest to the grip part, the first part The two parts form straight side grooves without any side coding. However, on this side of the key body, the bottom of the side groove is cut and a ridge is provided at the location of the side coded portion. The upper walls of the side grooves are all straight, so the side-coded tumblers of the lock unit, which interact with the wavy guide surface on the underside of the side groove, must be biased downwards, for example with a spring, in order to follow this wavy guide surface. .

Since this technique is known per se, the side codings can be formed by recesses in the undulating guide surfaces of the side grooves whose bottom is cut.

In principle, it is possible to use keys which are provided with a side code pattern on only one or both sides of the key body and have no serrations on the upper edge of the key body. If so, the local locksmith can form an edge code on this key at a later stage as needed.

As is also known in the art, the raised teeth forming the upper edge code pattern may be chamfered at several different angles, if any.

Furthermore, it is of course possible to provide a key in which the wavy side code pattern is selected from a group consisting of a plurality of possible code positions at different vertical position and rearward position, wherein: the central position corresponds to the position of an axis of one of the side locking tumblers of one of the associated cylindrical lock units when the key is fully inserted into the key slot, the forward position is from the central position towards the key body The free end is longitudinally displaced by an incremental distance, the rearward displacement is longitudinally displaced by an incremental distance from the central position towards the grip of the key, When the key is fully inserted into the keyway of the rotatable key socket, the central position, the forward position and the rearward position each correspond to a specific position of a lateral finger on the side locking tumbler of the associated interlocking unit position, the lateral fingers such as finger 654 or finger 754 described above.

151: Cam member/rear cam

152a, 152b: Fastening screws

200: Shell

220: Upper part of the shell

221a-221g: Parallel holes

222: Vertical cover

231a-231g: Lower locking pin

232a-232g: Upper locking pin

235a-235g: Coil Spring

240: lower half of the shell

242: Recess or hole

300: rotatable key socket

310: Front Flange

320: key slot

331a-331g: Vertical holes

351a-351c: Coded side locking tumblers

361a-361c: Spring

371a-371c: Vertical holes

FR1: Front area

L1: rear area

Claims (28)

A cylindrical lock unit (100), comprising: a casing (200) having an upper half (220) and a lower half (240), the lower half (240) of the casing has a A cylindrical bore of a rotatable key socket having a cylindrical outer circumference, the rotatable key socket (300) is integrally formed and used to transmit a torque via a torque transmitting connection when the key socket is rotated To a locking mechanism, the upper half (220) of the housing is provided with a central row of upper and lower locking pins (231a-231g, 232a-232g) in associated holes (221a-221g), The key socket (300) has a central row of corresponding holes (331a-331g) for accommodating the lower locking pins in the central row, the key socket has at least one side locking mechanism (351a-351c; 451a) , 451b, 461a, 461b; 551a-551b; 951a-951c; 851a-851b; 851a'-851d'), the side locking mechanism operates independently of the upper and lower locking pins (231a-231g, 232a-232g) the central row consisting of; a key slot (320; 420; 520; 920) extending axially rearward from the front end (310) of the key socket and for receiving an associated key (40; 140), The associated key has a key body, the central row of the upper and lower locking pins and the side locking mechanism for engaging and locking the key socket from being in the lower half of the housing Rotated unless the body of the associated key is fully inserted into the keyway, the cylindrical lock unit is characterized by: The at least one side locking mechanism on at least one side of the key slot is completely confined to the front area of the key socket and includes at least two coded side locking tumblers (351a-351c; 451a, 451b, 461a, 461b) ; 551a-551b; 951a-951c; 851a-851b; 851a'-851d') in a longitudinal row, the at least two coded side locking tumblers abut the front end (310) of the key socket, each of the coded The side locking tumblers are individually movable and can interact directly with the lower half of the housing, or indirectly interact with the lower half of the housing via a side lever to form a coded front end side locking mechanism, in The maximum length of the front area (FR1; FR2; FR3) of the key socket on the at least one side of the key slot is 50% of the full length of the key socket, and a rear area (L1; L2) of the adjacent key socket ; L3) has a minimum length of 50% of the full length of the key socket, the rear area (L1; L2; L3) of the key socket accommodates a composition consisting of corresponding holes (331a-331g) cooperating with the lower locking pins At the rear of the central row, each side of the key socket is block-shaped or accommodates at least one additional lock assembly (152b), wherein: when the at least two coded side lock tumblers (351a-351c; 451a, 451b, 461a, 461b) when directly interacting with the lower half of the housing, each of the coded side locking tumblers is movable between a release limited position and at least one locked position, wherein each coded side locking tumbler is located at The release limited position is completely confined within the key socket, and each of the coded side locking tumblers in the at least one locked position radially protrudes from the key socket to fit into at least one recess or hole in the housing (242) and engage the housing to prevent rotation of the key socket and when the at least two coded side locking tumblers (551a-551b; 951a-951c; 851a-851b; 851a'-851d') via the side lever (580, 980, 880, 880') indirectly with the lower half of the housing Upon interaction, the sidebar forms part of the coded front end side locking mechanism and is located on the cylindrical outer circumference of the key socket to engage an associated groove (243) in the cylindrical bore of the housing, The side lever is adapted to nest and engage at least one coded recess (555; 656, 657) in the tumbler in a released retracted position allowing rotation of the key socket, and wherein: each of the coded sides locks the tumbler in a selected position of at least three possible positions, the selected position providing a coding when the at least two coded side locking tumblers interact directly with the housing, the selected position when the tumbler is in the release limiting position allowing the key socket to rotate relative to the housing, when the at least two coded side locking tumblers interact with the housing via the side lever, the select position allows the key socket when the side lever is in the released retracted position Rotation relative to the housing, and the coded front end side locking mechanism in turn has a plurality of possible code combinations. The cylindrical lock unit of claim 1, wherein the longitudinal row of coded side locking tumblers in the at least one coded front end side locking mechanism comprises at least 3 coded side locking tumblers (351a- 351c; 851a'-851d'). The cylindrical lock unit of claim 1 or claim 2, wherein the at least one additional lock assembly includes a portion of the torque transmission link. The cylindrical lock unit of claim 1 or claim 2, wherein the at least one additional lock component includes a blocking device that prevents full insertion of an incorrectly cut key body, or assists in the locking of the cylindrical lock unit A properly functioning electronic device. The cylindrical lock unit according to claim 1 or claim 2, wherein the key socket comprises two coded front-end side locks respectively disposed on both sides of the key slot Mechanisms (451a, 451b; 461a, 461b; 851a'-851d', 880'; 851a, 851b, 880). The cylindrical lock unit of claim 1 or 2, wherein each of the coded side locking tumblers in the coded front end side locking mechanism is each provided with a transverse finger (554; 654; 754 ), the transverse fingers are attached to maintain direct contact with a side code pattern (41; 141'; 141) on the key body of the associated key when the key body is inserted into the key slot. The cylindrical lock unit of claim 6, wherein each of the coded sides locks the at least one coded recess (555; 656, 657) and the transverse finger (554; 654; 754) in the tumbler ), and the at least one coded recess is used to cooperate with the side bar (580; 680; 780) to disengage the side bar (580; 680; 780) from the recess located inside the housing groove. The cylindrical lock unit of claim 6, wherein the transverse finger (754) is longitudinally displaced along the keyway to form a code relative to the central axis of the associated code side locking tumbler The coding of each of the coded side locking tumblers is based on the longitudinal displacement of the transverse finger (754) and the position of the at least one coded recess (755) cooperating with the side bar (780). The cylindrical lock unit of claim 6, wherein each of the coded side locking tumblers (651b) can move up and down and rotate in an associated hole, and the rotational position also forms a code. The cylindrical lock unit of claim 1 or claim 2, wherein at least one of the coded side locking tumblers (351c; 551b) is located in front of a first hole (331g), the The first hole (331g) is the one closest to the front end (310) in the central row of the corresponding holes. The cylindrical lock unit of claim 10, wherein the at least one coded front end side locking mechanism (551a-551b, 580; 951a-951c, 980) extends rearwardly from an area adjacent the first hole. Cylindrical lock unit as claimed in claim 1 or 2, wherein at least one spring (581; 981) is provided on two coded side locking tumblers cooperating with the side lever (580; 980) (551a, 551b; 951b, 951c), no spring is located between a coded side locking tumbler (551b; 951c) and one end of the side bar. The cylindrical lock unit of claim 12, wherein a single spring (581) is disposed between two adjacent coded side locking tumblers (551a, 551b) closest to the front end of the key socket, And the single spring cooperates with the side rod (580). The cylindrical lock unit of claim 1 or 2, wherein the keyway (320; 420; 920) is oriented towards aligning the lower locking pins in the central row with the associated holes and the coded side locking tumblers (351a-351c; 451a, 451b, 461a, 461b; 551a-551b; 951a-951c') in the coded front end side locking mechanism can move in a plane, The plane is laterally displaced relative to the keyway (320, 420; 920). The cylindrical lock unit of claim 1 or 2, wherein the central row of upper and lower locking pins in the upper half of the housing comprises 6 or 7 lower Locking pins, the lower locking pins for cooperating with a plurality of protruding teeth (42; 142) on an edge of the key body of the associated key (40) inserted into the key slot. A combination of a lock unit and a key, comprising the cylindrical lock unit as described in any one of claims 1 to 15, and a combination for unlocking the cylindrical lock unit (200; 200') A key (40) for '), the wavy side code pattern is generally limited to the longitudinal half of the key body closest to the grip, and includes at least two side coded wavy portions that are used to interact with the at least one coded front end The side locking mechanism interacts and adjoins a second portion, which is straight and extends toward the free end of the key body. The combination of a lock unit and a key as claimed in claim 16, wherein at least one of the side-coded wavy portions of the wavy side-coded pattern (41; 141; 141') of the key is more than one All the encoded portions of the edge code pattern (42, 142) are closer to the grip portion (40) of the key. The lock unit and key combination of claim 16, wherein the side-coded waves of the wavy side-code pattern (41; 141; 141') are in the longitudinal half of the key body Arranged in a continuous column. A key for unlocking an associated cylindrical lock unit having a rotatable cylindrical key socket having a key slot and at least one coded front side limited to a forward area of the rotatable cylindrical key socket Locking mechanism, the key includes a holding part and a key body, wherein the key body includes on at least one side of the key body: a first part with a wavy side surface consisting of a row of at least two side-coded wavy parts Code pattern, the at least two side-coded waves are generally limited to the longitudinal half of the key body closest to the grip, and a second adjacent portion that is straight and toward the free end of the key body extend, And wherein, each of the at least two side coded waves of the wavy side code pattern is used to interact with a corresponding one of at least two coded side locking tumblers of the coded front end side locking mechanism, the at least two Each of the side coded waves is individually movable and each is located in one of at least three possible positions to establish at least nine code combinations for the coded front end side locking mechanism. The key of claim 19, wherein the wavy side code pattern is located on a ridge of a side groove whose bottom is cut in at least one side surface of the key body. The key according to item 19 or 20 of the scope of the application, wherein the key body has an edge code pattern (42; 142), and the edge code pattern includes a plurality of coding parts defined by a plurality of convex teeth. A longitudinally continuous row. The key of claim 21, wherein the protruding teeth are formed by bevelling at a plurality of different angles. 21. The key of claim 21, wherein at least one of the side-coded wavy portions of the wavy code pattern is closer to the grip of the key than all of the coded portions of the edge code pattern department. The key according to item 19 or 20 of the scope of the application, wherein a wavy side code pattern is formed on both sides of the key body. The key as claimed in claim 24, wherein different kinds of wavy side code patterns (141, 141') are provided on both sides of the key body. The key of claim 19 or claim 20, wherein each of the side coding wave portions is formed by a recess in the wavy side code pattern. The key as described in claim 19 or 20, wherein the The at least two side coding wave parts of the wavy side code pattern are each selected from a group consisting of a plurality of possible code positions at different vertical levels, and the possible code positions include a central position, a forward position and a rearward position, wherein the central position corresponds to the position of an axis of one of the at least two coded side locking tumblers of the associated cylindrical lock unit when the key is fully inserted into the key slot, the forward position is longitudinally displaced by an incremental distance from the central position toward the free end of the key body, and the rearward position is longitudinally displaced by an incremental distance from the central position towards the grip of the key, when the key is fully When inserted into the key slot of the rotatable cylindrical key socket, the central position, the forward position and the rearward position each correspond to a lateral finger on the coded side locking tumbler of the associated cylindrical lock unit. a specific position of the object (654; 754). The key according to claim 19 or 20, wherein the free end of the key body includes an inclined surface extending from a lower edge of the key body on the at least one side of the two side surfaces, so as to a straight portion adjacent to the second portion of the key body.

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