A management lock cylinder

Abstract

The present invention relates to a management lock core, including a lock shell assembly, in which a lock core is rotatably arranged, a keyhole for inserting a key is arranged in the lock core, a circumferential surface of the lock core is provided with a plurality of rows of pin hole groups distributed along its circumference, each row of pin hole groups is provided with a plurality of lock core pin holes arranged and distributed along the axial direction of the lock core and communicated with the keyhole, the lock shell assembly is provided with lock shell pin holes which can correspond to the lock core pin holes during the rotation of the lock core, a pin assembly for unlocking or locking the lock core is selectively arranged between the plurality of lock core pin holes and the lock shell pin holes corresponding to the lock core pin holes, the keys include special keys and management keys, the special keys are provided with special teeth corresponding to the lock core pin holes on which the pin assembly is selectively installed, and the management key is provided with management teeth corresponding to all the lock core pin holes, the design is ingenious, the assembly and processing are convenient, the number of special keys is large, and the management is convenient for the administrator.

Description

[Technical field]

[0002] The invention relates to the field of locks, in particular to a management lock core. [Background technology]

[0004] In the prior art, a lock core is usually only provided with a row of pin assemblies. These lock cores have poor anti-theft performance and are easily provoked or unlocked by techniques such as vibration guns. Moreover, a lock core can only be opened by one key. In public places such as dormitories and hotels, when an administrator wants to enter multiple rooms at the same time, he needs to carry the key of each room, which increases the number of keys to be carried and also brings inconvenience to unlocking and management.

[0005] In the prior art, management locks usually adopt the method of adding a supplementary bead between the marble and the flat bead. By utilizing the height difference of the supplementary bead itself, the depth of the management key tooth depth is continued to be drilled to the same depth as the height of the added supplementary bead, so as to form different special keys, so that the tooth depth of the management key is the same as the height of the marble, and the tooth depth of the special key is the same as the sum of the heights of the marble and the supplementary bead.

[0006] Although the above-mentioned prior art can be provided with special keys and management keys, there are the following problems: the management lock core is formed only by utilizing the height difference of the supplementary beads themselves, and the combination method of the marble assembly with an additional bead added between the marbles and the flat beads is limited. The number of special keys is small, and the number that can be managed by the management key is limited, which cannot meet the modern requirements of having many locks that need to be managed in public places such as dormitories and hotels.

[0007] Therefore existing technology can not meet our needs. [Summary of the invention]

[0009] In order to solve the above problems, the present invention provides a management lock core which is convenient for management.

[0010] To achieve the above object, the present invention provides the following technical solutions:

[0011] The key comprises a special key and a management key, the special key is provided with special teeth corresponding to the lock gall pin holes on which the pin assemblies are selectively installed, the management key is provided with management teeth corresponding to all the lock gall pin holes, the special key is adapted to be matched with the pin assembly through the special teeth, and the management key is adapted to be matched with the pin assembly through the management teeth.

[0012] As a preferred embodiment, it is further defined as: the pin hole row group is provided with four rows, and the pin hole row group includes a first pin hole row group symmetrically arranged on both sides of the lock core and a second pin hole row group symmetrically arranged above the side of the lock core.

[0013] As a preferred embodiment, it is further defined as follows: the axes of the two second pin hole arrays form an angle α with the vertical plane, and the angle α is 30°±5°.

[0014] As a preferred embodiment, it is further defined as: the lock case assembly includes a lock case body and a sleeve arranged between the lock case body and the lock core, a first through hole for accommodating the sleeve is arranged in the lock case body, the sleeve is fixedly arranged in the first through hole, a second through hole is arranged in the sleeve, the lock core is rotatably arranged in the second through hole, and the lock case pin hole is arranged on the sleeve.

[0015] As a preferred embodiment, it is further defined as: the pin assembly includes a first pin assembly placed in the first pin hole row group and a second pin assembly placed in the second pin hole row group, the first pin assembly and the second pin assembly are both provided with a marble, a flat ball and a spring, the flat ball is provided with a accommodating hole for accommodating the spring, the marble is arranged in the pin hole of the lock core, and the flat ball and the spring are arranged from the outside to the inside in the pin hole of the lock shell; when unlocking, the special key drives the top end of the marble to be flush with the circumference of the lock core through the special tooth, or the management key drives the top end of the marble to be flush with the circumference of the lock core through the management tooth; when locking, the spring drives the flat ball to reset so that the flat ball is stuck in the pin hole of the lock core and counteracts the marble.

[0016] As a preferred embodiment, it is further defined as: the lock core pin hole includes a first pin hole and a second pin hole, the lock case pin hole includes a plurality of third pin holes that can be aligned with the first pin hole after assembly and a plurality of fourth pin holes that can be aligned with the second pin hole after assembly, the third pin hole and the fourth pin hole are both arranged on the sleeve, the first pin assembly is slidably arranged in the first pin hole and the third pin hole, and the second pin assembly is slidably arranged in the second pin hole and the fourth pin hole.

[0017] As a preferred embodiment, it is further defined as: the first pin hole and the second pin hole are both provided with a first lock hole communicated with the keyhole and a second lock hole communicated with the first lock hole, a first step is provided between the first lock hole and the second lock hole, the marble includes a marble body and a marble fixed on the marble body, a second step adapted to the first step is formed between the marble body and the marble, so that after assembly, the marble is inserted in the first lock hole, and the marble body is inserted in the second lock hole.

[0018] As a preferred embodiment, it is further defined as: the management key includes a handle and a key body fixed on the handle, the management teeth are arranged on the key body, and the management teeth include a first tooth adapted to the first pin assembly and a second tooth adapted to the second pin assembly; when the management key is inserted, the management key triggers the marble to be flush with the circumferential surface of the lock core through the first tooth and the second tooth; when the management key is pulled out, the spring drives the flat ball to reset so that the flat ball is stuck in the pin hole of the lock core and resists the marble.

[0019] As a preferred embodiment, it is further defined as: a pull is provided in the opening groove in the middle of the lock shell body, a filler core is provided between the pull and the lock core and is engaged with the lock core, a turn key is provided for sliding inside the filler core, and the lock core and the filler core can be linked with the pull or rotate relative to the pull through the turn key.

[0020] As a preferred embodiment, it is further defined as: a raised first key is laterally arranged on one side of the filler, a receiving groove is arranged on the other side of the filler, the turn key is slidably arranged in the receiving groove, second slots are provided at both ends of the receiving groove, a through slot is longitudinally arranged at the bottom of the receiving groove for the key to pass through when unlocking, the through slot is arranged between the two first keys, a first slot matched with the first key is arranged on the lock core; a second key matched with the second slot is arranged on the turn key, grooves for partially inserting the lock core are arranged on both sides of the pull, a third through hole for accommodating the turn key is arranged between the two grooves, and the inner wall of the third through hole extends inward to form a third slot for inserting the second key when linked.

[0021] The beneficial effects of the present invention are:

[0022] 1. The key of the present invention includes a special key and a management key. The special key is provided with special teeth corresponding to the pin holes of the lock core with the pin assembly selectively installed therein, and the management key is provided with management teeth corresponding to all the pin holes of the lock core. The designer can leave one or more pin holes vacant, that is, do not place the pin assembly, and the teeth corresponding to the vacant pin holes are not opened, thereby obtaining a variety of different tooth combination modes, and then obtaining a variety of different locks and special keys adapted thereto. The key with all teeth opened is used as the management key that can open all the above locks. The manager can open all the locks with the management key, which is convenient for management and operation, and has a clever design, convenient assembly and processing, and saves processing and design costs;

[0023] 2. The pin hole group of the present invention includes a first pin hole group symmetrically arranged on both sides of the lock core and a second pin hole group symmetrically arranged on the upper side of the lock core, and is staggered in the longitudinal plane so that each group of pin assemblies is not on the same plane, which greatly reduces the mutual influence between the first tooth pattern and the second tooth pattern, allows the pin hole group and the tooth pattern to be freely designed, greatly increases the number of tooth pattern combinations, reduces the burden on designers and manufacturers, greatly improves the anti-theft performance of the lock and enhances the management of the lock.

Brief Description of the Drawings

[0025] Figure 1 It is a schematic diagram of the structure of the present invention;

[0026] Figure 2 It is an exploded schematic diagram of the present invention;

[0027] Figure 3 It is one of the cross-sectional views of the present invention with the management key inserted;

[0028] Figure 4 This is the second cross-sectional view of the present invention when inserting the management key;

[0029] Figure 5 It is a partial cross-sectional view of the lock core;

[0030] Figure 6 It is a schematic diagram of the structure of the lock gallbladder;

[0031] Figure 7 It is a schematic diagram of the structure of the sleeve;

[0032] Figure 8 is a partial cross-sectional view of the sleeve;

[0033] Fig. 9 It is one of the structural diagrams of gallbladder supplement;

[0034] Fig.10 This is the second structural diagram of the gallbladder supplement;

[0035] Fig.11 It is a schematic diagram of the structure of the turn key;

[0036] Fig.12 It is a structural diagram of the pull-and-drag;

[0037] Fig.13 It is a schematic diagram of the key structure. [Specific implementation method]

[0039] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0040] As attached Figure 1 To Attachment Figure 4As shown, a management lock core includes a lock shell assembly 1, in which a lock core 2 is rotatably arranged, and a keyhole 21 for inserting a key is arranged in the lock core 2, and a circumferential surface of the lock core 2 is provided with a plurality of rows of pin hole groups distributed along its circumference, and each row of the pin hole groups is provided with a plurality of lock core pin holes 22 which are arranged and distributed along the axial direction of the lock core 2 and communicated with the keyhole 21, and a lock shell pin hole 11 which can correspond to the lock core pin hole 22 during the rotation of the lock core 2 is provided in the lock shell assembly 1, and a pin assembly 3 for unlocking or locking the lock core 2 is selectively arranged between a plurality of the lock core pin holes 22 and the lock shell pin holes 11 corresponding to the lock core pin holes 22, and the key includes a special key and a management key 4, and the special key is provided with a pin assembly 3 which is selectively installed with a pin assembly 3 for unlocking or locking the lock core 2. The special teeth corresponding to the lock core pin holes 22 of the pin assembly 3, the management key 4 is provided with management teeth corresponding to all the lock core pin holes 22, the special key is adapted to the pin assembly 3 through the special teeth, the management key 4 is adapted to the pin assembly 3 through the management teeth, the designer can leave one or more pin holes vacant, that is, do not place the pin assembly 3, and the teeth corresponding to the vacant pin holes are not opened, thereby obtaining a variety of different tooth combinations, and then obtaining a plurality of different locks and special keys adapted thereto, and the key with all the teeth opened serves as the management key 4 that can open all the above-mentioned locks, the manager can open all the locks with the management key 4, which is convenient for management and operation, with ingenious design, convenient assembly and processing, and saving processing and design costs.

[0041] As attached Figure 2 and attached Figure 4 As shown, in the present embodiment, the pin hole groups are provided with four rows, and the pin hole groups include a first pin hole group 23 symmetrically arranged on both sides of the lock core 2 and a second pin hole group 24 symmetrically arranged on the upper side of the lock core 2; the axes of the two second pin hole groups 24 form an angle α with the vertical plane, and the angle α is 30°±5°. Each row of pin hole groups is staggered on the longitudinal plane so that each group of pin assembly is not on the same plane, which greatly reduces the mutual influence between the first tooth 421 and the second tooth 422, so that the pin hole group and the tooth can be freely designed, which not only increases the number of rows of the pin hole group, but also greatly increases the number of tooth combinations, reduces the burden on designers and manufacturers, greatly improves the anti-theft performance of the lock and enhances the management of the lock.

[0042] Furthermore, in this embodiment, the pin hole group is arranged in four rows, and the angle α is 30°. The designer can freely select the degree of the angle α according to actual production, management or use requirements. The angle α can also be 25° and 35°. At the same time, the pin hole group can be arranged in 2 rows, 5 rows or 6 rows, etc., which can be freely selected. While adding special keys, multiple rows of pin hole groups can also increase the difficulty of unlocking the lock and improve the anti-theft performance.

[0043] As attached Figure 2 and attached Figure 8 As shown, in this embodiment, the lock case assembly 1 includes a lock case body 12 and a sleeve 13 arranged between the lock case body 12 and the lock core 2, the lock case body 12 is provided with a first through hole 121 for accommodating the sleeve 13, the sleeve 13 is fixedly arranged in the first through hole 121, the sleeve 13 is provided with a second through hole 131, the lock core 2 is rotatably arranged in the second through hole 131, the lock case pin hole 11 is arranged on the sleeve 13; the lock case 1 is provided with a first fixing hole 122 communicating with the first through hole 121, and the sleeve 13 is provided with a second fixing hole 122 communicating with the first fixing hole 122 A matching second fixing hole 132, the sleeve 13 is fixedly connected to the lock case body 12 by a bolt assembly 8, and a slot 29 is also provided on the lock core 2, in which a first retaining ring 9 is clamped, which is cleverly designed and easy and quick to assemble; further, in this embodiment, the lock case assembly 1 includes a lock case body 12 and a sleeve 13 arranged between the lock case body 12 and the lock core 2. The designer can, according to actual production, management or use requirements, not set a sleeve and directly set the lock case pin hole 11 on the lock case body 12, thereby further reducing the number of parts, making assembly faster and more convenient, and reducing production costs.

[0044] As attached Figure 2 and attached Figure 4As shown, in the present embodiment, the pin assembly 3 comprises a first pin assembly 301 placed in the first pin hole row group 23 and a second pin assembly 302 placed in the second pin hole row group 24, the first pin assembly 301 and the second pin assembly 302 are both provided with a marble 31, a flat ball 32 and a spring 33, the flat ball 32 is provided with a receiving hole 321 for accommodating the spring 33, the marble 31 is provided in the lock core pin hole 22, and the flat ball 32 and the spring 33 are provided from the outside to the inside in the lock shell pin hole 11; when unlocking, the special key drives the top end of the marble 31 to be flush with the circumference of the lock core 2 through the special tooth, or the management key 4 drives the top end of the marble 31 to be flush with the circumference of the lock core 2 through the management tooth; when locking, the spring 33 drives the flat ball 32 to reset so that the flat ball 32 is stuck in the lock core pin hole 22 and counteracts the marble 31.

[0045] As attached Figure 4 and attached Figure 8 As shown, in this embodiment, the lock core ball hole 22 includes a first ball hole 221 and a second ball hole 222, the lock shell ball hole 11 includes a plurality of third ball holes 111 that can be aligned with the first ball hole 221 after assembly and a plurality of fourth ball holes 112 that can be aligned with the second ball hole 222 after assembly, the third ball hole 111 and the fourth ball hole 112 are both arranged on the sleeve 13, and the first ball assembly 301 is slidably arranged on the first ball assembly 301. The second pin hole 221 and the third pin hole 111, the second pin assembly 302 is slidably set in the second pin hole 222 and the fourth pin hole 112; further, the first pin hole group 23 is composed of a plurality of the first pin holes 221 and the third pin hole 111, the second pin hole group 24 is composed of a plurality of the second pin holes 222 and the fourth pin hole 112, the lock case pin hole 11 and the lock core pin hole 22 together constitute the pin hole group.

[0046] As attached Figure 4 and attached Figure 8 As shown, in this embodiment, the first pin hole 221 and the second pin hole 222 are both provided with a first lock hole 25 communicated with the key hole 21 and a second lock hole 26 communicated with the first lock hole 25, a first step 27 is provided between the first lock hole 25 and the second lock hole 26, the marble 31 includes a marble body 311 and a marble 312 fixed on the marble body 311, a second step 313 adapted to the first step 27 is formed between the marble body 311 and the marble 312, so that after assembly, the marble 312 is inserted into the first lock hole 25, and the marble body 311 is inserted into the second lock hole 26.

[0047] As attached Figure 3 , Attachment Figure 4 and attached Fig.13 As shown, in this embodiment, the management key 4 includes a handle 41 and a key body 42 fixedly arranged on the handle 41, and the management teeth are arranged on the key body 42, and the management teeth include a first tooth 421 adapted to the first pin assembly 301 and a second tooth 422 adapted to the second pin assembly 302; when the management key 4 is inserted, the management key 4 touches the marble 31 to be flush with the circumference of the lock core 2 through the first tooth 421 and the second tooth 422; when the management key 4 is pulled out, the spring 33 drives the flat ball 32 to reset so that the flat ball 32 is stuck in the pin hole 22 of the lock core and against the marble 31; the special teeth on the special key include A third tooth adapted to the first pin assembly 301 and a fourth tooth adapted to the second pin assembly 302 are installed, while a lock core pin hole 22 without the first pin assembly 301 and the second pin assembly 302 is not installed, and no teeth are provided at corresponding positions on the special key. Therefore, since the special key has no teeth at certain positions, the special key can only open the lock without the pin assembly placed in the corresponding lock core pin hole 22. The design is ingenious, and there are many combinations of pin assemblies, so there are many special keys and corresponding locks, and there is no need to change the structure of the original lock or add some parts to produce many special keys and locks, which saves costs and is convenient for production and management.

[0048] As attached Figure 3 and attached Fig. 9 To Attachment Fig.12As shown, in this embodiment, a pull 5 is further provided in the middle opening groove of the lock shell body 12, and a filler 6 engaged with the lock core 2 is further provided between the pull 5 and the lock core 2, and a turn key 7 is slidably provided in the filler 6, and the lock core 2 and the filler 6 can be linked with the pull 5 or idle relative to it through the turn key 7; a raised first insertion key 61 is transversely provided on one side of the filler 6, and a receiving groove 62 is provided on the other side of the filler 6, and the turn key 7 is slidably provided in the receiving groove 62, and both sides of the receiving groove 62 A second slot 63 is provided at the end of the receiving slot 62, a through slot 64 is longitudinally provided at the bottom of the receiving slot 62 for the key to pass through when unlocking, and the through slot 64 is arranged between the two first insertion keys 61, a first slot 28 adapted to the first insertion key 61 is provided on the lock core 2; a second insertion key 71 adapted to the second slot 63 is provided on the turning key 7, grooves 51 for partially inserting the lock core 2 are provided on both sides of the pull 5, and a third through hole 52 for accommodating the turning key 7 is provided between the two grooves 51, The inner wall of the third through hole 52 extends inward to form a third slot 53 for the second key 71 to be inserted into when linked. A fourth through hole is also provided in the turn key 7, and a connecting piece 72 is provided in the fourth through hole. The two turn keys 7 are fixedly connected together by the connecting piece 72. When the special key or management key 4 is inserted, the front end of the key pushes the turn key 7 to move toward the axial direction of the pull 5, so that the second key 71 of the turn key 7 inserted into one side of the key is simultaneously inserted into the first slot 28 of the lock core 2 and the pull 5, and the key is inserted into the through groove 64. When the key is turned, the filling cylinder 6 drives the lock cylinder 2 and the pull pull 5 to rotate synchronously to unlock the door, and the lock cylinders 2 on both sides do not affect each other, so that when the special key or the management key 4 is used to twist the lock to unlock, the lock cylinder on the side without the key inserted will not rotate with the pull pull 5, and the torque cannot be transmitted to the lock cylinder on the other side. Even if the lock cylinder outside the door is damaged, the door can be unlocked. At the same time, the lock cylinder outside the door cannot control the lock cylinder inside the door. The design is ingenious and the mechanism is simple and compact.

Claims

1. A management lock cylinder, characterized in that: The invention comprises a lock shell assembly (1), wherein a lock core (2) is rotatably arranged in the lock shell assembly (1), a keyhole (21) for inserting a key is arranged in the lock core (2), a circumferential surface of the lock core (2) is provided with a plurality of rows of pin hole groups distributed along its circumference, each row of the pin hole groups is provided with a plurality of lock core pin holes (22) arranged and distributed along the axial direction of the lock core (2) and communicating with the keyhole (21), the lock shell assembly (1) is provided with lock shell pin holes (11) which can correspond to the lock core pin holes (22) during the rotation of the lock core (2), a plurality of the lock core pin holes (22) and the pin holes corresponding to the lock core pin holes (21) are arranged in a circumferential direction of the lock core (2), and a plurality of the lock core pin holes (22) and the pin holes corresponding to the lock core pin holes (21) are arranged in a circumferential direction of the lock core (2). A pin assembly (3) for unlocking or locking the lock cylinder (2) is selectively arranged between the pin holes (22) of the lock cylinder and the pin holes (11) of the lock case. The key comprises a special key and a management key (4). The special key is provided with special teeth corresponding to the pin holes (22) of the lock cylinder on which the pin assembly (3) is selectively installed. The management key (4) is provided with management teeth corresponding to all the pin holes (22) of the lock cylinder. The special key is adapted to the pin assembly (3) via the special teeth, and the management key (4) is adapted to the pin assembly (3) via the management teeth.

2. The management lock cylinder according to claim 1, characterized in that: The pin hole rows are arranged in four rows, and the pin hole rows include a first pin hole row group (23) symmetrically arranged on both sides of the lock core (2) and a second pin hole row group (24) symmetrically arranged above the side of the lock core (2).

3. The management lock cylinder according to claim 2, characterized in that: The axes of the two second pin hole rows (24) form an angle α with the vertical plane, and the angle α is 30°±5°.

4. The management lock cylinder according to claim 2, characterized in that: The lock case assembly (1) comprises a lock case body (12) and a sleeve (13) arranged between the lock case body (12) and a lock core (2); a first through hole (121) for accommodating the sleeve (13) is arranged in the lock case body (12); the sleeve (13) is fixedly arranged in the first through hole (121); a second through hole (131) is arranged in the sleeve (13); the lock core (2) is rotatably arranged in the second through hole (131); and the lock case pin hole (11) is arranged on the sleeve (13).

5. The management lock cylinder according to claim 4, characterized in that: The pin assembly (3) comprises a first pin assembly (301) placed in the first pin hole row group (23) and a second pin assembly (302) placed in the second pin hole row group (24); the first pin assembly (301) and the second pin assembly (302) are both provided with a pin ball (31), a flat ball (32) and a spring (33); the flat ball (32) is provided with a receiving hole (321) for receiving the spring (33); the pin hole (22) of the lock core is provided with the pin ball (31); the lock housing The flat ball (32) and the spring (33) are arranged in the ball hole (11) from the outside to the inside; when unlocking, the special key drives the top of the ball (31) to be flush with the peripheral surface of the lock core (2) through the special tooth, or the management key (4) drives the top of the ball (31) to be flush with the peripheral surface of the lock core (2) through the management tooth; when locking, the spring (33) drives the flat ball (32) to return to its original position so that the flat ball (32) is stuck in the ball hole (22) of the lock core and abuts against the ball (31).

6. The management lock cylinder according to claim 5, characterized in that: The lock core pin hole (22) comprises a first pin hole (221) and a second pin hole (222); the lock case pin hole (11) comprises a plurality of third pin holes (111) which can be aligned with the first pin hole (221) after assembly and a plurality of fourth pin holes (112) which can be aligned with the second pin hole (222) after assembly; the third pin hole (111) and the fourth pin hole (112) are both arranged on the sleeve (13); the first pin assembly (301) is slidably arranged in the first pin hole (221) and the third pin hole (111); and the second pin assembly (302) is slidably arranged in the second pin hole (222) and the fourth pin hole (112).

7. The management lock cylinder according to claim 6, characterized in that: The first pin hole (221) and the second pin hole (222) are both provided with a first lock hole (25) communicating with the key hole (21) and a second lock hole (26) communicating with the first lock hole (25); a first step (27) is provided between the first lock hole (25) and the second lock hole (26); the marble (31) comprises a marble body (311) and a pin (312) fixedly arranged on the marble body (311); a second step (313) adapted to the first step (27) is formed between the marble body (311) and the pin (312), so that after assembly, the pin (312) is inserted into the first lock hole (25) and the marble body (311) is inserted into the second lock hole (26).

8. The management lock cylinder according to claim 7, characterized in that: The management key (4) comprises a handle (41) and a key body (42) fixedly arranged on the handle (41), and the management teeth are arranged on the key body (42), and the management teeth include a first tooth (421) adapted to the first pin assembly (301) and a second tooth (422) adapted to the second pin assembly (302); when the management key (4) is inserted, the management key (4) touches the marble (31) to be flush with the circumference of the lock core (2) through the first tooth (421) and the second tooth (422); when the management key (4) is pulled out, the spring (33) drives the flat ball (32) to reset so that the flat ball (32) is stuck in the pin hole (22) of the lock core and abuts against the marble (31).

9. The management lock cylinder according to any one of claims 4 to 8, characterized in that: A puller (5) is also arranged in the middle opening groove of the lock housing body (12), and a filler (6) is arranged between the puller (5) and the lock core (2) and is engaged with the lock core (2). A turning key (7) is slidably arranged in the filler (6), and the lock core (2) and the filler (6) can be linked with the puller (5) or rotate relative to it through the turning key (7).

10. The management lock cylinder according to claim 9, characterized in that: A protruding first insertion key (61) is transversely arranged on one side of the filler (6), a receiving groove (62) is arranged on the other side of the filler (6), the turning key (7) is slidably arranged in the receiving groove (62), second slots (63) are provided at both ends of the receiving groove (62), a through groove (64) is longitudinally arranged at the bottom of the receiving groove (62) for the key to pass through when unlocking, the through groove (64) is arranged between the two first insertion keys (61), and a through groove (64) is provided on the lock core (2) to be connected to the key. The first slot (28) is adapted to the first insertion key (61); the rotating key (7) is provided with a second insertion key (71) adapted to the second slot (63); both sides of the pull (5) are provided with grooves (51) for partially inserting the lock core (2); a third through hole (52) for accommodating the rotating key (7) is provided between the two grooves (51); the inner wall of the third through hole (52) extends inwardly to form a third slot (53) for inserting the second insertion key (71) when in linkage.

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