TWI477684B - Lock and key with double code pattern - Google Patents

Description

Lock and key with double code style

The present invention relates to a lock and key combination comprising a cylinder lock and a key having a flat key blade. The lock has a rotatable key plug for receiving a key slot of a flat key piece, and the cylinder lock has at least two side locking tumblers, the side locking tumblers are guided A plurality of lateral fingers that are liftable in the associated chambers of the key plug and that are also rotatable and that protrude into the keyhole are engaged with the key blade when the key is inserted into the keyhole. The key blade has an associated cipher pattern in a side recess for engaging the side locking tumblers and for positioning the side locking tumblers when the key with the correct password is inserted into the keyhole The key plug is allowed to rotate in the cylinder lock.

Such locks and keys are known, for example, from U.S. Patent Nos. 4,756,177 and 5,715,717 (owned by Bo Widen). These conventional lock and key systems provide a high level of security and many combinations of passwords.

In addition, Austrian Patent Specification No. AT 392 508 B discloses a similar lock and key combination in which the lateral fingers of the side locking tumblers have different lengths, the first having a short length and the second having a long length, wherein The short finger engages a primary code surface having a plurality of first cryptographic face portions at an outer portion of the side recess of the key blade, and the long finger is on the side of the key blade The deeper interior of the recess engages a secondary code surface having a plurality of second cryptographic faces.

Against this background, it is an object of the present invention to provide a greater number of combinations of ciphers while maintaining at least the same or improved level of security.

This object is achieved with a combination of locks and keys, wherein the transverse fingers are each positioned at a particular longitudinal position relative to a transverse plane extending through a central axis of the associated chamber, the particular longitudinal position Centered or longitudinally offset from the center, and the first and second code face portions of the key are longitudinally distributed in particular to allow the lateral fingers to be seated when the key is inserted into the keyhole Waiting for the first and second cryptographic surface portions (111, 112; 141, 142; 151, 152), wherein the first and second cryptographic surface portions are generally three-dimensionally variable or separated in the flat key blade Different positions, that is, in an upward and downward direction in a vertical plane defining the flat key piece, in a depth direction perpendicular to the vertical plane, and in a longitudinal direction of the key piece, thereby forming on the key piece A compact password style with an increased number of combinations of passwords.

Thus, the two side-locking tumblers, each provided with first and second fingers, provide a wide range of password combinations by combining various passwords on the two code faces. The cryptographic faces can extend parallel to each other to form a very compact overall cryptographic configuration in the lock and on the key blade.

In a possible embodiment, at least one of the cryptographic faces is a wave shape.

The main face of the code may be defined by one of two opposing first side walls of the outer groove of the side recess, the groove also having an inner wall. Likewise, the cipher sub-face may be defined by a groove having opposing second side walls and a bottom wall therebetween. In this way, the two code faces can be formed separately and limited to a very limited area beside the key piece. Even so, the number of possible password combinations is still enormous.

As will be understood from the following description, the configuration of the password pattern can be modified in a number of ways. These features are also stated in the sub-items.

Advantageously, the cryptographic pattern can be used to establish a master key system that contains one or more master keys and a number of specific keys that operate only one lock or a relatively small number of locks.

The invention is explained in detail below with reference to the drawings which illustrate some of the possible embodiments.

Figures 1 and 1a illustrate the combination of the key 100 and the side lock tumblers 201a, 201b, 202a, 202b of the associated interlock 200 (not shown), fully depicting the side lock tumblers 201a, 201b Two of 202a, 202b (four halves), and three of them 203, 204, 205 are shown by dashed lines. The side locking tumblers of this particular embodiment are each divided into two halves 201a, 201b, etc. that can be raised and lowered (upper, lower) independently of one another in a common chamber or pocket in the key plug of the lock 200. A key plug having a central keyhole for receiving the key 100 is not shown in the drawings, but it can be formed in a conventional manner in the prior art, except that the side locking tumbler is novel, which is described below. Will explain.

The key 100 is provided with a new type of cipher pattern (refer to FIG. 1a), that is, a double code pattern 110 composed of two independent cipher planes: a relatively shallow outer recess in the side recess of the side surface 101 of the flat key blade 102 or The groove 111 (or more specifically, its side surface 114) forms a coded major face and a cryptographic secondary face formed in the deeper inner groove 112. The outer groove forming the major face of the code is defined by two opposing side walls 113, 114 and a (broken) inner or bottom wall 115 therebetween. The lower side wall 114 forms a cryptographic longitudinal plane, in this case wavy. In some positions, the undulating coded surface has a locking latch 201 (i.e., the right half 201b of Fig. 1), 202 (i.e., the right half 202b of Fig. 1), A code portion corresponding to the positions of 203, 204, and 205. These cipher portions are indicated by 131, 132, 133, 134, and 135 in Fig. 1a. When the key has been properly inserted into the lock 200, they will support the side locking tumbler halves 201b, 202b, 203b, etc., in well-defined lift (or vertical) positions.

It should be noted that it is sufficient that only the lower surface or side wall 114 of the code is used and the upper side wall 113 does not have to be coded. However, the upper sidewall 113 can be used to actively guide the laterally projecting tumbler of the first side locking tumbler up and down so that it will permanently engage the lower sidewall 114. On the other hand, if the upper side wall 113 is omitted, the first side locking tumbler (its first finger, as explained below) is brought into contact with the side wall 114 using, for example, a spring or the like. Fig. 3, Fig. 6a, Fig. 6b and Fig. 6c of the coil spring are shown. Thus, the lower sidewall 114 can be hollowed out adjacent to (and underneath) the shelf surface on the side of the key blade 102. Then, the best bracket The depth or thickness is equal to the depth of the lower sidewall 114. In this way, there will be no side walls opposite the side walls 114.

In this particular embodiment, there is an adjacent inner or bottom wall 115 substantially parallel to the outer side surface 101 of the key blade 102. This inner or bottom wall 115 extends between the opposing side walls 113, 114 of the outer groove 111. In this embodiment, the width of the groove is further greater than the deeper inner groove 112 cut into the inner or bottom wall 115.

The relatively deep inner groove 112 also has opposing side walls, namely, an upper side wall 116 and a lower side wall 117. Between the side walls 116, 117, the recess has a bottom wall 118 that is substantially parallel to the outer side surface 101 of the key 100 (also parallel to the bottom wall 115 or outer groove 111).

The two grooves 111, 112 will operate independently of each other and each will guide the respective side locking tumblers with the first and second fingers. The 4a, 4b, and 4c (also shown in Fig. 1a) of the tumblers 201a, 201b, 202a, and 202b are locked from the side of the figure. Thus, the semi-cylindrical side locking tumbler 201a has a relatively long second finger 211a that engages and follows the wavy face or side wall 117 when the key is inserted into the lock. In the associated chamber of the key plug (not shown), the two semi-cylindrical side locking tumblers 201a, 201b are non-rotatably guided. Therefore, the tumblers 201a, 201b do not rotate, and the laterally projecting first and second fingers 211a, 211b do not pivot when the side locking tumblers are moved up and down.

In this particular embodiment, the fingers 211a, 211b are each actively guided in the associated grooves 111, 112 as the key is moved longitudinally. For this purpose, the long fingers 211a are somewhat narrow at the free end, corresponding to the width or height of the inner groove 112 which is somewhat narrow, whereas the short fingers 211b are relatively Width or height such that it fills the full height or width of the relatively wide outer groove 111.

Although the two grooves 111, 112 are independently assembled, it must be observed that the inner groove 112 should generally not pass over the outer groove 111 (but in some cases) because this would interrupt the outer groove 111 and may interfere with short Movement of the fingers 211b and associated side locking tumblers 201b.

When the properly configured key 100 is fully inserted into the lock 200, the side locking tumblers 201b, 202b, 203b, etc. will be in a defined position determined by the code face portions 131, 132, 133, 134, 135 of the side wall 114. The adjacent side locking tumblers 201a, 202a, 203a will also be in a defined position determined by the code face portions 141, 142, 143, 144, 145 of the lower side wall 117 of the inner slot 112. In these well-defined positions, the side locking tumblers 201a, 201b, ..., 205 have rows of rear side recesses 231a, 231b for accepting the permission of a key plug (not shown) to rotate within the cylinder lock 200. Side strips (not shown) are well known in the art.

Figure 4d illustrates a cross section of a key blade 102 with a double code pattern 110, including a wide or high but shallow outer groove 111 and an inner groove 112 that is somewhat deep, and the bottom surfaces 115, 118 of the grooves. In this particular embodiment, the depth of the deepest recess 112 is less than half the thickness of the key blade 102.

As is known in the art, the wavy cipher pattern formed by the grooves 111, 112 has a ramped surface (in this case, a common ramp face) 150 at the free end or tip end of the key blade 102. Thus, when the key 100 is inserted into the keyhole of the lock, the side locking tumblers of the lock 200 (details of the lock not shown) will climb up the ramp 150 with the fingers and then follow the corrugated grooves 111, 112, respectively, and each again resist Opposing sidewalls 116, 117 and 113, 114 and the upper and lower surfaces of the fingers Engage. As a result, the side locking tumblers 201a, 201b, 202a, 202b move up and down until the key blade 102 is fully inserted and the respective surface portions 131, 132, 133 of the fingers 211a, 211b, 212a, 212b, etc. 134, 135 and 141, 142, 143, 144, 145 apply pressure, the surface portions form a code and ensure alignment of the recesses 231a, 231b, etc., and allow side strips (not shown) to enter the recesses such that The key plug can be rotated in a cylindrical housing (not shown) of the lock 200.

It will be appreciated that the vertical positions of the respective side locking tumblers having different fingers (long, short fingers or first and second fingers) will generally differ and be independent of one another. In this way, a large number of possible passwords can be provided, although the dual code 110 (111, 112) is extremely compact and limited to a limited area of the key blade. Nonetheless, the side locking tumblers are still movably mounted in the standard cylindrical chamber of the key plug.

As an alternative to the side strips that cooperate with the recesses behind the respective tumblers, and as is known in the art, the tumblers extend in the longitudinal direction (upper or lower) to engage the cylinder of the keyhole with the lock housing. Corresponding boreholes adjacent to the inner surface of the shape cooperate.

An important aspect of the present invention is that there are two code faces in the key blade adjacent to each other. On the other hand, the side locking tumblers are not necessarily longitudinally split, as shown in Figures 1, 4a, 4b, and 4c. Instead, all or some of them may be of other types, with only some (or at least one of them) having short first fingers and others (or at least one of them) having long or second fingers.

A specific embodiment of a block-shaped cylindrical side locking tumbler is illustrated in Figure 2 (and the associated key of Figure 2a, Figure 2b, and Figure 2c). Cylindrical side locking tumblers 301, 302, etc. (also referred to in Figures 5a, 5b, 5c) are each provided with lateral fingers 311, 312, etc., some fingers (Fig. 5a) 311) short and tall, that is, the "first" finger, while the other (312 of Figure 5a) is long and narrow, that is, the "second" finger. Similar to the previous embodiment, the first finger 311 engages the cryptographic face of the outer 111 of the side recess of the key blade 102, while the long and narrow "second" finger engages and follows the deeper groove 112 ( In Fig. 4d, the position of the deeper groove 112 is very high, and in the 5th figure, the position of the deeper groove 112 is lower).

In Figures 5a and 5b, the fingers 312, 311 are illustrated as being movable to the right for the body portion of the side locking tumbler. However, of course, it is also possible for the fingers to be central or to the left. The different shifting modes are shown in Fig. 7a, Fig. 7b, Fig. 7c (for long and narrow or "second" fingers 312l, 312c, 312r) and 7d, 7e, 7f (For short, tall or "first" fingers 3111, 311c, 311r).

It is also possible to mix different types of side locking tumblers. 3 (and 6a, 6b, 6c) illustrate a first locking tumbler 401 that is biased by a coil spring 421 to cause the lateral fingers 411 to remain in contact with the outer undulating code face 141'. And a pair of second locking tumblers 402a, 402b, which are of the type shown in Figure 4a (both have long and narrow fingers 412a, 412b) and are corrugated deep grooves 142' (Reference) Figure 6d) Guidance. Therefore, the first and second locking tumblers 401 and 402a, 402b will each contact and follow differently configured code faces 141', 142'.

The first side locking tumbler 401 is disclosed in the International Patent Application No. The type of WO 2006/098675, that is, it is rotatable between two rotational end positions, as indicated by arrow A in Figure 6a, and forming an asymmetrical finger 411, as shown in Figure 6b, There is a key contact surface 411as which is displaceable in the circumferential direction with respect to the center plane by the tumbler 401 and the fingers 411. In this manner, the finger can be positioned by the associated cipher portion 141c (Figs. 3a and 3b), and the key contact surface 411as is located at a well-defined position of the cipher portion that is made into a concave portion, such as Published in WO 2006/098675. When the key blade is seated in the lock, the position of the tumbler 401 is locked with respect to the side (A1 in FIGS. 3a and 3b), the concave portion is generally moved to the right or the left or at the center, thereby Form a password. Therefore, the first side locking tumbler 401 is positioned in an up-and-down manner (up, down) and in a rotating manner. In the correct position, the recess 431 of the back will align with corresponding alignment recesses on the back of the pair of side locking tumbler halves 402a, 402b, thereby allowing the side strips (not shown) to be seated within the alignment recesses, such that Rotatable key plug (not shown).

In the specific embodiment described so far, the outer portion of the recess is somewhat wide, and the inner portion (forming the groove) is somewhat narrow. In the two specific embodiments described below, the configuration is reversed: the outer portion of the recess is relatively narrow, and the inner portion of the deeper portion is relatively wide.

Figures 8a, 8b, and 8c illustrate three different "second" side locking tumblers 502 having relatively long fingers 51121, 512c, 512r located on the left, center, and right sides, respectively. Either of the second tumblers will be embedded with a side recess of the associated key 150 (Fig. 8e) of the slit deep groove 152. The recess of the groove is at the top and bottom, thereby accommodating the widest outermost Any of the partial fingers 512l, 512c, 512r.

The side recess of the key 150 also has a narrower outer portion that is sized to closely receive and guide the narrow finger 511 of the "first" side locking tumbler 501 (Fig. 8d). In this case, the narrow fingers 511 need not be shorter than the fingers 51121, 512c, 512r. It may have a length as shown by the point profile 511'. Although the modified narrow finger 511 'is relatively long, the free end does not touch any coded surface. Fingers 5121, 512c, 512r are guided by deeper kerf slots 152, and narrow fingers 511 (or 511 ') are guided by the outer 151 of the side recesses.

In the particular embodiment of Figure 9e, the key 160 has a side recess or groove having a narrow outer portion 161 and a wider inner portion 162 with a slit in the lower half. The side locking tumblers 602 have corresponding relatively long fingers 61121, 612c, 612r that are provided with a wider outer face facing downwardly for insertion into the kerf slot 162. The interior of the fingers is narrower than the outer portion 161 of the side recesses such that only the outermost portion is guided by the lower half of the slot 162. This lower half forms a wavy cipher sub-face that engages the long or "second" fingers 612l, 612c or 612r of the second side locking tumbler 602.

Figure 9d illustrates a "first" side locking tumbler 601 having a narrow first finger 611. The fingers 611 can be slightly longer (indicated by 611') as the narrow fingers of the previous embodiment (Fig. 8d). The key 160 itself is also illustrated in the side view of Figure 9f. Of course, the cryptographic faces formed by the outer and inner portions 161, 162 typically have different wavy configurations, however they must remain relatively close because the geometric constraints implicitly follow the configuration of the side recesses 161, 162. In this embodiment, the side locking tumblers are secured by the upper spring 621 They are held downward so that their fingers 61121, 612c, 612r always contact the code face (the outer side of the side recess and the lower side surface of the inner side 161, 162).

The upper half of the outer and inner slots 161, 162 are not engaged with the side locking tumblers 601, 602 such that the upper side walls of the grooves are straight or undesired, as shown in Figure 9f.

In addition, it is also possible to remove the upper left portion of the key 160 to the left of the dotted line 163, leaving only the bracket surface 161 (forming the first code face) and the adjacent interior 162 (forming the second code face).

In accordance with the present invention, there should be a "first" and "second" side locking tumbler that cooperates with the outer, inner (with main and secondary code faces) of the side recesses on one side of the key blade. The first and second side locking tumblers are generally all of the same type (block, cylindrical, or semi-cylindrical, or some other type) or of different types (cylindrical and semi-cylindrical) ). The tumbler fingers can also all be the same "first", "second" side locking tumblers, or can be mixed (e.g., as shown in Figure 6a).

The outer and inner cryptographic faces need not be "wavy" but may have other configurations as long as they allow the first and second fingers to slide along the surface. They may have several straight portions and small irregularities or steps, and in addition, the irregularities or steps must be small enough to allow the associated fingers to climb down or step down in the longitudinal direction. It is even possible to have an interruption if the next face of the code face is provided with a slope that catches the finger and causes it to crawl on the slope or the like.

Of course, the key blade can have a double code on only one or both sides.

The key may also have a conventional password for cooperation with the centrally located latch at the upper edge of the key blade.

The key can also be reversible (can be reversed) and it can also be provided with a suitable longitudinal section groove.

The number of side locking tumblers can be chosen at will, for example only two semi-cylindrical tumblers. Likewise, the geometry of the tumblers can vary, such as having a rectangular cross section rather than a circular cross section.

As shown in FIG. 10a, FIG. 10b, and FIG. 10c, the dual code pattern can be used to establish a key with a special composition (Bb and C in Figure 10b, Figure 10c, respectively) and one or more The lock and key system of the master key (Figure 10a). These figures only show the position of the tumbler closest to the key tip and the corresponding key code portion. However, the same principle applies to the rest of the key portion of the key.

The specific key ("parent") B shown in Figure 10b (also compared to Figure 1a and Figure 7b, Figure 7e) is a first groove 111 that is grouped to form a width or height (with a password master) The face 114) can accommodate a correspondingly high and short first tumbler finger 311c, where it is at a releasing elevation, while the second narrow groove 112 having a cipher sub-face 115' is at a second The tumbler fingers 312c are not released when they are in the position shown in Figure 10c because the cipher sub-face 115' is too high (higher than "d"), i.e., excessively elevated.

On the other hand, the specific key C of Fig. 10c operates with the lock of the long tumbler finger 312c at this particular height but does not operate with the short and high tumbler fingers 311c (position as shown in Fig. 10b) The lock, because the password main surface 114' is too low at this position, that is, the promotion is insufficient. Therefore, the two specific keys C and B each operate a specific lock instead of the two locks.

However, the master key A will operate the two locks (represented by the tumblers fingers 311c, 312c) because the two code faces 114, 115 are at the correct level, In this case the same level. Thus, the master key A operates a lock with a high short tumbler finger 311c at a release position engaged with the code major face 114 and a narrow long tumbler finger 312c at a release position engaged with the cipher subsurface 115. Lock. Typically, the master key group constitutes all locks that can release different types of locked tumblers at different locations, however each of the specific keys is grouped into one or a subset that can only be released within the group of such locks. .

Utilizing the various principles of the master key system, those skilled in the art will be able to design many different master key systems (involving the dual code style of the present invention), including systems with two, three or more levels of master keys. It is also possible to change the longitudinal position of each finger as included in the various embodiments described above.

100‧‧‧ Key

101‧‧‧ side surface

102‧‧‧Flat key blade

110‧‧‧Double code style

111‧‧‧Outer recess or groove

112‧‧‧deep inner trough

113, 114‧‧‧ opposite side walls

114‧‧‧ side surface

114'‧‧‧ password main face

115‧‧‧Inner or bottom wall

115'‧‧‧ cipher side

116‧‧‧ upper side wall

117‧‧‧lower side wall

118‧‧‧ bottom wall

131 to 135 ‧ ‧ password department

141 to 145 ‧ ‧ cipher face

141'‧‧‧ wavy code face

141c‧‧‧ Associated Password Department

142'‧‧‧Wave deep groove

150‧‧‧ slope surface

151‧‧‧External

152‧‧‧ deep slot

160‧‧‧ Key

161‧‧‧Strict exterior

162‧‧‧wide interior

163‧‧‧ dotted line

200‧‧‧related interlocks

201 to 205‧‧‧ side locking tumbler

201a, 201b, 202a, 202b, 203a, 203b‧‧‧ side locking tumblers

211a, 211b, 212a, 212b‧‧‧ fingers

231a, 231b‧‧‧ recess

301, 302‧‧‧Cylindrical side locking tumbler

311, 312‧ ‧ transverse fingers

311l, 311c, 311r‧‧‧ first finger

312l, 312c, 312r‧‧‧ second finger

401‧‧‧First locking tumbler

402a, 402b‧‧‧second locking tumbler

411‧‧‧Horizontal fingers

411as‧‧‧Key contact surface

412a, 412b‧‧‧ fingers

421‧‧‧Helical spring

431‧‧‧ recess

501, 502‧‧‧ side locking tumbler

511‧‧‧Stenosis fingers

511'‧‧‧ finger length

512l, 512c, 512r‧‧‧ relatively long fingers

601‧‧‧First side locking tumbler

602‧‧‧ Side locking tumbler

611‧‧‧Narrow first finger

611'‧‧‧ finger length

612l, 612c, 612r‧‧‧ fingers

621‧‧‧Up spring

A‧‧‧ arrow

A‧‧‧ master key

A1‧‧‧Location of the side locking tumbler 401

B, C‧‧‧ specific key

Figure 1 is a perspective view showing a key with a double code pattern on the key blade and a number of side locking tumblers of the associated interlock (the rest of the lock is not shown), each side locking tumbler being semi-cylindrical Composition; Figure 1a illustrates the key without any side tumblers, thereby more clearly showing the double code pattern of Figure 1; Figure 2 is also a perspective view of the second side with the side locking tumbler In a specific embodiment, each tumbler is formed from a single cylinder; Figure 2a illustrates the key without any side locking tumblers; Figure 2b illustrates a side view of the key of Figure 2; The line IIc-IIc of Figure 2b depicts the profile of the key; Figure 3 also illustrates in perspective view the key of several side-locking tumblers of the third embodiment, which are provided with different types of side-locking tumblers. Figure 3a shows the key of Figure 3 without any side locking tumblers; Figure 3b illustrates a side view of the key of Figure 3; Figure 3c depicts the profile of the key along line IIIc-IIIc of Figure 3b.

Figures 4a, 4b, and 4c respectively show a top view, a perspective view, and another perspective view of two pairs of semi-cylindrical side locking tumblers having protruding fingers; Figure 4d shows a cross section of the associated key 5a, 5b, 5c, 5d illustrate two cylindrical side-locking tumblers with different protruding fingers, and corresponding sections of associated keys; Figures 6a, 6b, 6c, 6d are illustrated Two side locking tumblers of different protruding fingers, and corresponding sections of associated keys; Figures 7a, 7b, 7c and 7d, 7e, 7f illustrate cylindrical sides with different protruding fingers Locking the tumbler; the 8a, 8b, 8c and 8d, 8e, 8f drawings each show a cylindrical side locking tumbler with a widened external protruding finger, a brake with a narrow finger The cross section and the side view of the plug, and the associated key; the 9a, 9b, 9c and 9d, 9e, 9f diagrams show the side with the downwardly outwardly protruding fingers Locking the tumbler; and Figure 10 shows a master key system.

100‧‧‧ Key

200‧‧‧related interlocks

201 to 205‧‧‧ side locking tumbler

201a, 201b‧‧‧ side locking tumbler

202a, 202b‧‧‧ side locking tumbler

211a‧‧‧ fingers

Claims (18)

A lock and key combination comprising: a cylinder lock having a rotatable key plug having a keyhole for receiving a flat key blade, having a key (100) of the flat key blade, and the cylinder lock There are at least two side locking tumblers (201a, 201b; 301, 302; 401, 402), and when the key is inserted into the keyhole, the side locking tumblers are guided to the number of the key plugs a plurality of lateral fingers (211a, 211b; 311, 312; 411, 412a, 412b) that can be raised and lowered and possibly rotated and protruded into the keyhole for engaging the key blade, and The associated cryptographic pattern (110) of the side recesses (115, 118) of the key blade is adapted to engage the lateral fingers and to enable the sides when the key with the correct password is inserted into the keyhole The side locking tumbler is located to permit rotation of the key plug in the cylinder lock, the fingers having different lengths, at least one having a short first length and at least one having a second length, such short The fingers are attached to the outside of the side recess of the key blade a cipher face portion of the cipher face portion joined, and the elongate fingers are engaged with a cipher sub-face having a plurality of second cipher face portions at a deeper interior of the side recess of the key blade, Characterized in that the lateral fingers are each located at a particular longitudinal position that is or longitudinally offset from extending through the associated chamber The center of the cross-section of the central axis, and the first and second cryptographic faces of the key are longitudinally distributed in particular to allow the lateral fingers to be seated when the key is inserted into the keyhole The first and second cryptographic surface portions (111, 112; 141, 142; 151, 152), wherein the first and second cryptographic surface portions are generally three-dimensionally variable or Separate different positions, that is, in an upward and downward direction in a vertical plane defining the flat key piece, in a depth direction perpendicular to the vertical plane, and in a longitudinal direction of the key piece, thereby being on the key piece A compact password pattern with an increased number of combinations of passwords is formed. The lock and key combination of claim 1, wherein the cipher sub-face is formed by an inner groove forming the deeper portion of the side recess. The lock and key combination as described in claim 2, wherein the main face of the code is formed by an outer groove forming the outer portion (111; 141', 151) of the side recess, the outer groove including adjacent Two opposite side walls of the one side surface of the flat key piece. The lock and key combination of claim 3, wherein the inner groove (112) is narrower than the outer portion (111) of the side recess. The lock and key combination of claim 3, wherein the inner groove (152) is a slit and is wider than the outer portion (151) of the side recess. The combination of locks and keys as described in claim 1 wherein at least one of the independent cryptographic faces (131-135; 141'-145) is wavy. The lock and key combination of claim 1, wherein at least one of the first and second fingers (211a, 211b) is actively guided to the side recess (112, 111) between the opposite vertical walls. The lock and key combination of claim 1, wherein one of the first and second fingers (211b) is measured by a vertical dimension that is transverse to a longitudinal direction of the key blade. (211a) is high. The lock and key combination of claim 1, wherein at least one of the first and second side locking tumblers (401) is spring biased for engagement with the associated cryptographic surface. The lock and key combination of claim 1, wherein at least one of the first and second side locking tumblers (201a, 201b) is composed of a half body, the half system and the storage The other half of the same chamber is complementary, and the two halves of each pair can move independently of each other. The lock and key combination of claim 10, wherein there are a row of pair of side tumblers (201a, 201b, 202a, 202b) in the longitudinal direction, each pair being composed of two complementary halves. The lock and key combination of claim 1, wherein the first side tumbler (201b) and/or the second side lock tumbler (201a) are non-rotating in the key plug guide. The lock and key combination of claim 12, wherein the side tumblers (302) that are non-rotatably guided in the key plug are Having lateral fingers positioned at a particular location relative to a central surface extending through each of the side tumblers and the longitudinal direction of the keyhole, the particular position being centrally (312c) or longitudinally offset from the center (312l, 312r) . The lock and key combination of claim 5, wherein at least one of the second side locking tumblers (502) is provided with a finger (512l; 512c; 512r), the finger The object has a first narrow portion and a second widened portion that is configured to be embedded in the slit portion of the inner groove. The lock and key combination of claim 1, wherein at least one of the side tumblers (401) is rotatably guided in the key plug, and wherein, in association therewith When the cryptographic face is engaged, the associated finger (411) can pivot between the two end positions. A lock and key combination as described in claim 1 of the patent application, which forms part of a lock and key system having at least one master key (A) and at least two specific keys (B, C), all of which The equal key (A, B, C) has a double code with a primary and secondary cryptographic surface, and the primary key (A) is configured to be released by a lock having different types of locking tumblers (311c or 312c) at different positions. All of the locks in the group, and each of the specific keys (B, C) is grouped to release only one of the locks or a subset of the lock group. The lock and key combination of any one of clauses 1 to 16, wherein at least one of the side locking tumblers is formed by a circular cylindrical body. A key (100) for operating a cylinder lock with a key plug having a keyhole and at least two side locking tumblers, the key comprising: a substantially flat key blade (102), at a side recess There is a password style (110) for Engaging with the side locking tumblers and positioning the side locking tumblers at a position that allows the key plug to rotate in the cylinder lock when the key blade is inserted into the keyhole, characterized in that the key blade The cryptographic pattern in the side recess includes at least two independent cipher faces formed on at least one side of the key blade and extending along at least a portion of the length of the key blade, on the same side of the key blade (101) comprising: a main face (131-135; 141'; 151) having a plurality of first cipher face portions, the first cipher face portions being particularly longitudinally distributed outside the side recesses At least one side wall and the side surface adjacent to the key piece, and at least one cipher side (141-145; 142'; 152) having a plurality of second cipher face portions, the second cipher face portion Particularly longitudinally distributed in the deeper interior of the side recess, the first and second cryptographic faces being located at defined positions that are generally three-dimensionally variable or separate in each tether contact region of the key blade, That is, in the vertical plane defining the flat key piece And a downward direction, in a depth direction perpendicular to the vertical plane, and in a longitudinal direction along the key blade, thereby forming a compact password pattern with an increased number of combinations of passwords on the key blade.