WO2016180343A1

WO2016180343A1 - On-off type lock and key

Info

Publication number: WO2016180343A1
Application number: PCT/CN2016/081732
Authority: WO
Inventors: 徐明达
Original assignee: 徐明达
Priority date: 2015-05-12
Filing date: 2016-05-11
Publication date: 2016-11-17
Also published as: CN104912386A; CN104912386B

Abstract

An on-off type lock and a key. The lock comprises an on-off type lock cylinder, a transmission mechanism and a lock sleeve (9); the key (1) is matched with the lock cylinder; the transmission mechanism comprises an inner sleeve (8), a lifting pin (71), a limiting pin (72) and an on-off pin (6); the lock cylinder rotates to form an on-off through groove (200), the lower part of the on-off pin (6) enters the on-off through groove (200) after the on-off pin (6) is extruded by the lifting pin (71), and the upper part of the on-off pin (6) is located in an on-off pin strip-shaped hole (81) of the inner sleeve (8), so that linkage unlocking between the lock cylinder and the inner sleeve (8) is realized; and after the lock cylinder rotates reversely and is locked, the limiting pin (72) limits the inner sleeve (8) from continuously rotating, the lock cylinder continues rotating reversely to extrude the lower part of the on-off pin (6) into the on-off pin strip-shaped hole (81), and the upper part of the on-off pin (6) enters a groove of the lock sleeve (9), so that linkage between the lock cylinder and the inner sleeve (8) is removed.

Description

Clutch lock and key

Technical field

The present invention relates to a clutch lock and a key that mates with the lock.

Background technique

Anti-theft door locks are used as daily necessities. The existing anti-theft locks generally include lock operating systems, lock cylinders, transmission mechanisms, etc., and there have been many developments, and their safety performance has been greatly improved, but in terms of structural design and stability. There are still some shortcomings; the lock core is the most important component of the lock, which determines the anti-theft performance of the lock. At present, there are bullet locks commonly used in life, and there are a variety of special-shaped anti-lifting marbles in the lock cylinder, with unique marble and blade structure design. , with a high degree of anti-technical opening security. The invention of the clutch lock greatly improves the anti-technical opening ability, and particularly improves the anti-rotation torque breaking ability. At present, some clutch locks, marble lock cylinders, etc., can solve the basic anti-theft function, but the key mutual opening rate is high, the key amount of the lock cylinder is small, and the lock core structure is complicated and the processing is difficult. Therefore, it is necessary to design a lock that has strong anti-technology opening capability and a large amount of coding information.

Summary of the invention

The technical problem to be solved by the present invention is to overcome the above-mentioned deficiencies of the prior art and provide a clutch type lock and a key, which has a simple structure, a stable transmission when unlocking and locking, a large amount of lock core coding information, and strong anti-technical opening capability.

The technical solution adopted by the present invention to solve the above problems is: a clutch type lock and a key, the lock head includes a clutch type lock cylinder, a transmission mechanism, a lock sleeve, and the key is matched with the lock cylinder, and the transmission mechanism includes an inner sleeve, a top pin, and a limit position. The pin and the clutch pin are installed in the lock sleeve, and the side wall of the inner sleeve is provided with a strip hole of the clutch pin, the outer wall of the inner sleeve is opened with a limited slot, and one end of the inner sleeve is connected with the operating system of the lock; The lock cylinder is installed in the inner sleeve; the inner wall of the lock sleeve has a groove, the top pin and the limit pin are arranged on the side wall of the lock sleeve; the clutch pin is located on the strip hole of the clutch pin of the inner sleeve; the lock core rotates to form a clutch passage groove, After the top pin is squeezed, the lower part of the clutch pin enters the clutch passage groove, and the upper part of the clutch pin leaves the lock sleeve groove, so that the lock core and the inner sleeve are interlocked and unlocked; after the lock core is reversely rotated and locked, the limit pin and the limit groove cooperate with the limit. The sleeve continues to rotate, and the lock cylinder continues to rotate in the opposite direction so that the lower portion of the clutch pin is squeezed into the strip hole of the clutch pin, and the upper portion of the clutch pin enters the groove of the lock sleeve, and the lock core and the inner sleeve are uncoupled.

The preferred lock cylinder is an encoding mechanism, and the coding mechanism comprises a plurality of coding pieces, the coding piece is in the shape of a ring, the outer edge of the ring is provided with a clutch groove, and the inner edge of the ring is provided with a protrusion protruding toward the center of the ring. The bump is provided with a reset block and a slot, the bumps of each code piece are the same, the positions of the bumps are not exactly the same with respect to the clutch groove, the plurality of code pieces are stacked in the axial direction, the center of the ring is coaxial, and the clutch The depth of the groove is the same; the key matched with the lock cylinder is distributed with a rack along the axial direction, and the rack is provided with a plurality of tooth blocks; when the key insertion coding mechanism rotates, the plurality of tooth blocks on the key are respectively and multiple The coded chip slots are meshed successively to drive the code piece to rotate, so that the clutch grooves of all the code pieces form a clutch passage groove, and the clutch groove and the inner sleeve are interlocked after the clutch groove is facing the clutch pin; On the key, or in the coding mechanism, a reset bar linked with the key is arranged, and the reverse rotation key drives the reset bar to engage with the plurality of code piece reset blocks, so that the reset blocks of all the code pieces are rotated in the same direction, and the clutch grooves are not in the same direction. After the inner sleeve is restricted from rotating, the lower part of the clutch pin is extruded out of the clutch groove, and the upper part of the clutch pin enters the groove of the lock sleeve.

The coding mechanism further includes a guiding shaft, wherein the guiding shaft is located in a plurality of coding pieces, the guiding shaft is hollow inside, the front end is provided with a key hole that cooperates with the cross section of the key, and the key is inserted into the guiding shaft through the key hole, and the frame of the guiding shaft A strip hole is formed in the wall, and the tooth block on the key is exposed from the strip hole, and the outer wall of the frame body is fixed with an axial reset strip.

The guide shaft has a plurality of clips, the clip is in the shape of a ring, and the outer edge of the clip is provided with a clip groove, all the clips are in the same direction and the clip groove is always facing the clutch pin, and the clutch pin can be The clip is inserted into the groove of the clip, and the clip is spaced apart from the code piece.

The outer edge of the clip is provided with a clip protrusion, and the inner wall of the inner sleeve has a groove, and the protrusion is inserted into the groove.

A rear guard piece is mounted at a rear end of the guide shaft.

The key has a plurality of axial racks, each of which is provided with a plurality of blocks of different heights, each of which is provided with a plurality of stepped coggings, and after the key is inserted into the coding mechanism, the teeth and the slots Match one by one, and engage in rotation.

The clutch groove is chamfered with the edge of the clutch pin.

Compared with the prior art, the advantages of the invention are as follows: 1. The clutch core and the inner sleeve are interlocked by the clutch pin, and the lock core is located in the inner sleeve. When the lock is unlocked, the inner sleeve transmission is stable, and the technical unlocking ability is strong. 2. Set a plurality of coded pieces. The relative distribution positions of the tooth grooves and the clutch grooves of the coded piece are not completely the same. To make all the clutch grooves rotate in the same direction, it is necessary to rely on the matching key to pass the tooth block and The cogging is meshed successively, and each code piece is toggled at different angles. Since the number of coded pieces is larger and the position of the cogging is more diverse, the coding information contained in the coding mechanism is larger and the security is stronger. 3. The larger the amount of coded information, the higher the requirements on the position and height of the key rack and the tooth block of the tooth groove, and the requirement for the key is enhanced. The probability of the same key is greatly reduced, and it is not easy to imitate. 4. Increase the clips and rear guards to make the encoders rotate more stably. The coded sheets and clips are placed at intervals, which further avoids friction and interference between the encoders. After fixing the shields, the encoders are prevented. The clip is loose. 5. Rotate the key and drive the reset block through the reset bar so that the reset blocks of all the code chips are in the same position. When the code chip is reset, the key is inserted more smoothly. 6. The coded piece of the invention has a simple structure, a small volume, and a low manufacturing cost.

DRAWINGS

1 is a view showing the overall structure of a clutch type lock in the first embodiment of the present invention.

Figure 2 is an exploded view of the structure of Figure 1.

Figure 3 is a partial cross-sectional view of Figure 1.

Figure 4 is a schematic view of the structure of the inner sleeve.

Figure 5 is a schematic view of the structure of the lock cylinder and the key.

Figure 6 is an exploded view of the structure of Figure 5.

Fig. 7 is a schematic structural view of a coded piece.

Fig. 8 is a schematic structural view of a guide shaft.

Figure 9 is a schematic view of the structure of the clip.

Figure 10 is a schematic view showing the structure of the rear guard.

Figure 11 is a schematic view showing the structure after the encoder piece is rotated.

Figure 12 is a schematic view showing the structure of a key and a code piece.

Figure 13 is a schematic diagram of a key decoding process.

Figure 14 is a schematic diagram of the locked initial state.

Figure 15 is a schematic view of the unlocking process.

Figure 16 is a schematic view of the unlocked state.

Figure 17 is a schematic diagram of the reset process.

Figure 18 is a cross-sectional view showing a key, a code piece, and a guide shaft in the second embodiment.

Figure 19 is a cross-sectional view showing a key, a code piece, and a guide shaft in the third embodiment.

In the figure: 1, the key, 11, the tooth block, 12, another tooth block, 15, the Nth tooth block, 101, the second key, 102, the third key.

2, coded film, 21, the first type of code film, 211, the first type of code chip clutch groove, 212, the first type of code chip slot, 213, the first type of code chip reset block, 22, the second type of code Slice, 221, second type code chip clutch groove, 222, second type code chip slot, 223, second type code chip reset block, 23, third type code chip, 231, third type code chip clutch concave Slot, 232, third type code chip slot, 233, third type code chip reset block, 200, clutch slot, 25, Nth type code chip, 251, Nth type code chip clutch groove, 252, Class N coded chip slots.

3. Guide shaft, 31, key hole, 32, frame body, 33, strip hole, 34, reset bar, 35, rear guard block, 36, shoulder. 301, a second type of guide shaft.

4, clips, 41, clip grooves, 42, bumps.

5. Rear guard piece, 51, rear guard piece groove, 52, rear guard piece card slot.

6, clutch pin.

71, top pin, 72, limit pin.

8, inner sleeve, 81, clutch pin hole, 82, card slot, 83, limit slot, 84, connector.

9, lock sleeve, 91, pin hole, 92, limit pin hole.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Embodiment 1:

The lock head shown in Figures 1 to 3 includes a clutch lock cylinder, a transmission mechanism, and a lock sleeve.

The lower part of the locking sleeve 9 has a cylindrical shape. The outer wall of the locking sleeve 9 defines two pin holes communicating with the inside of the locking sleeve, respectively a top pin hole 91 and a limiting pin hole 92. The top pin hole 91 is provided with a slidable top. a pin 71, a slidable limiting pin 72 is disposed in the limiting pin hole 92, the two pin holes can be arranged as a blind hole, and a spring is arranged between the bottom of the blind hole and the top pin 71 and the limiting pin 72 (not shown in the drawing) ), the top pin 71 and the limit pin 72 are easily moved. The inner wall of the sleeve of the lock sleeve 9 is provided with a groove, the groove extends in the axial direction, and the groove intersects the pin hole.

The transmission mechanism includes an inner sleeve 8, a top pin 71, a limit pin 72, and a clutch pin 6.

The inner sleeve 8 is mounted in the cylinder of the lock sleeve 9. As shown in FIG. 4, the inner sleeve 8 is sleeve-shaped, and the outer wall is provided with a clutch pin-shaped hole 81. After the inner sleeve 8 is loaded into the lock sleeve 9, the clutch pin is released. The strip hole 81 corresponds to the groove of the inner wall of the lock sleeve, and the clutch pin 6 can be placed in the clutch pin hole 81 of the inner sleeve 8, and the width of the clutch pin 6 is larger than the depth of the strip hole 81 of the clutch pin, that is, It can be said that the upper part of the clutch pin 6 can enter the groove of the inner wall of the lock sleeve 9, and the lower part of the clutch pin 6 can extend to the inside of the inner sleeve 8. The inner wall of the inner sleeve 8 is also provided with an axial slot 82. The outer wall of the inner sleeve 8 is provided with a ring-shaped limiting groove 83. One end of the limiting groove 83 is in the same direction as the clutch pin-shaped hole 81, and the limiting pin 72 can be inserted into the limiting groove 83. One end of the inner sleeve 8 is fixed to the connecting member 84, and the connecting member 84 is connected to the operating system of the lock.

The clutch type lock cylinder is a set of coding mechanism. As shown in Fig. 5 and Fig. 6, the clutch type lock core is decoded by the key 1. The lock cylinder is located in the inner sleeve 8, and one end of the lock cylinder inserts the inner sleeve and the lock sleeve.

The encoding mechanism includes a plurality of code sheets 2, the structure of which is shown in FIG. 7, the code sheet 2 is a ring shape, and the plurality of code sheets are classified into N types, and the outer edge of the ring of the first type code sheet 21 has the first The code-like piece is separated from the groove 211, and the inner edge of the ring is provided with a protrusion protruding toward the center of the ring, and the first type of code piece slot 212 is opened on the protrusion; the outer edge of the ring of the second type code piece 22 is opened. There is a second type of code piece clutch groove 221, the inner edge of the ring is provided with a protrusion protruding toward the center of the ring, and the second type of code piece slot 222 is opened on the protrusion; the ring of the third type code piece 23 The outer edge is provided with a third type of code piece clutch groove 231, the inner edge of the ring is provided with a protrusion protruding toward the center of the ring, and the third type of code piece slot 232 is opened on the protrusion; and so on, the Nth class The code piece has a N-type code piece clutch groove and a N-type code piece slot. The shape of the clutch groove of the N-type code piece is the same, and the shape of the code groove of the code piece is also the same, except that the clutch groove of each type of code piece has a different relative position from the tooth groove of the code piece, as shown in FIG. For the coded piece, the angle between the groove of the coded piece and the groove of the coded piece is different, and there is a difference in angle. For the convenience of description, all the clutch grooves of the code piece are collectively referred to as a clutch groove, and all the groove of the code piece are collectively referred to as a cogging. . Each of the code sheets 2 may be provided with a plurality of slots, each of which has a convex protrusion height, and the plurality of slots are stepped. The slots of the three types of code sheets in Figure 7.

A plurality of code sheets 2 are stacked in the axial direction, and each code piece can be coaxially rotated. After the rotation, all the clutch grooves are in the same direction to form a clutch through groove 200. As shown in FIG. 11, the width of the clutch groove 200 is greater than that. With the width of the clutch pin 6, the clutch pin 6 can fall into the clutch groove 200, and the clutch pin 6 can be engaged with the entire code piece cylinder, and a part of the clutch pin 6 is located in the clutch pin hole 81 of the inner sleeve 8 through The clutch pin 6 realizes the interlocking of the lock core and the inner sleeve 8, and the connecting member 84 on the inner sleeve 8 drives the operating system action of the lock. When all the clutch grooves are not rotated in the same direction, the stacked plurality of code sheets are entirely cylindrical, and the clutch pins 6 cannot be engaged with the code sheet cylinder.

In order to increase the stability during the rotation of the plurality of code sheets and prevent the key from shaking excessively in the middle of the code sheet, the guide shaft 3 is increased, and its structure is as shown in FIG. 8. The guide shaft 3 has a plurality of columnar shapes, and the guide shaft 3 is hollow inside. The front end is provided with a key hole 31 that cooperates with the cross section of the key 1, and the key 1 can be inserted into the guide shaft 3 through the key hole 31. The front section of the guide shaft 3 is provided with a shoulder 36 on which a groove is provided. The rear portion of the guide shaft 3 is a frame body 32. The wall of the frame body 32 has a strip-shaped hole 33. The strip-shaped hole 33 corresponds to the key hole 31. After the key is inserted into the guide shaft 3, the tooth block on the key 1 can be exposed. Hole 33. The outer wall of the frame body 32 is fixed with an axial return strip 34, and the reset strip 34 projects outwardly of the frame body 32. A rear rear panel block 35 is provided at the rear of the frame body 32.

After the key 1 is inserted into the keyhole 31, the key 1 is provided with a positioning block to prevent the key 1 from being inserted too deeply. After the key 1 is inserted, a certain tooth block corresponds to a corresponding layer of the coded piece to ensure positional correspondence. .

In order to cooperate with the reset bar 34, the code block 2 is provided with a reset block, such as the first type code slice reset block 213, the second type code slice reset block 223, and the third type code slice slot 233 shown in FIG. In order to reset the block, the composite strip 34 can be engaged with the reset block, but the acting surfaces of the engaging surfaces of the two are opposite to the acting surfaces of the tooth block and the tooth groove.

The function of the reset bar 34 is to reset the coded piece to the initial state, and the key block is successively engaged with the reset block of each layer of the code piece and angularly displaced to the initial position, that is, the reset blocks of all the code pieces are on the same straight line, and the clutch is concave. The position between the groove and the reset block is different, so the clutch groove is not on the same straight line, and the clutch pin is extruded out of the clutch groove, as shown in the state of the code piece in FIG. 2 and FIG. 5, the decoding state is disturbed and returned to the initial position, and It is convenient to decode and insert the key freely.

In order to reset the clutch pin smoothly, the clutch pin is chamfered at the edge of the engaging groove of the clutch pin.

Obviously, a reset bar can be arranged on the key instead of the reset bar on the guide shaft, and the principle and structure are similar, and will not be described again.

Further improving the coding mechanism, adding the clip 4, the structure is as shown in FIG. 9, the clip 4 is in the shape of a ring, and the outer edge of the clip is provided with a clip groove 41, all the clips are in the same direction and the clip groove 41 is always facing the clutch pin 6, the clutch pin 6 can be caught in the clip groove 41, and the other portion of the outer edge of the clip is provided with the clip projection 42. When the clutch pin 6 is caught in the clutch slot 200 and After the clip groove is formed, the code piece, the clutch pin and the clip piece can be interlocked, and then the bump 42 can be engaged into the card slot 82 of the inner wall of the inner sleeve 8.

The structure of the rear cover 5 further increased is as shown in FIG. 10, the rear cover 5 is in the shape of a ring, the inner wall of the rear cover 5 is provided with a rear cover card slot 52, and the outer wall of the rear cover is provided with a rear cover groove. 51.

The mounting method of the coding mechanism: the clip 4, the code piece 2, the clip 4, the code piece 2, the clip 4 are sequentially placed on the frame body 32 of the guide shaft 3, and the clip 4 and the code piece 2 are spaced apart, and It is ensured that the clip 4 and the code piece 2 are rotatable, and the clip grooves of all the clips are in the same direction. The rear guard 5 is fixed to the rear portion of the frame 32 through the rear guard card slot 52 and the rear guard clip 35. The outer diameter of the code piece 2 and the outer diameter of the rear guard 5 are the same. After installation, the shoulder of the guide shaft 3 is mounted. The upper groove is in the same direction as the groove 51 on the rear guard 5 and may be in the same direction as the clutch groove 200. All the grooves on the entire coding mechanism can be rotated in the same direction, and the whole coding mechanism is used as a "clutch" for higher stability.

The structure of the key 1 is as shown in FIG. 5 and FIG. 6. The key 1 is in the shape of a pinion. In this embodiment, the key 1 has four axial racks, and each of the racks is provided with a plurality of tooth blocks of different heights, such as The tooth block 11 and the other tooth block 12 shown in Fig. 1 are unidirectionally engaged with the tooth grooves on the code piece. The function of the key 1 is to realize different angles of relative rotation of the plurality of code sheets, so that the clutch grooves are formed in the same direction to form the clutch passage 200.

The action of the key 1 and the code piece 2 is as shown in Fig. 12. The key 1 can be inserted into the middle of the code piece. For example, the tooth block 11 on the key 1 can be engaged with the slot 212 on the code piece, and the rotation of the key 1 drives the code piece to rotate. Similarly, other tooth blocks can be meshed with the slots of other code sheets. Of course, the tooth blocks on the key 1 are matched according to the slots on the code piece, and the code pieces of one layer and the teeth of the same key at a certain length position. The blocks are mated, and a tooth slot of a certain height on the same code piece is engaged with a tooth block of a certain height.

In the initial state, since the clutch grooves on the different code sheets are in different positions, in order to rotate the key 1 to rotate the clutch grooves of the plurality of code sheets 2 to the same direction, on the key, the tooth blocks corresponding to the different slots are on the projection surface. There is a corresponding angle on it. For example, the angle between the clutch groove of the M-th code piece and the lower side of the clutch pin 6 is A, and the angle between the clutch groove of the N-th code piece and the lower side of the clutch pin 6 is B. If A is larger than B, then The corresponding tooth block of the second layer code piece is first meshed with the tooth groove of the code piece, and after the rotation angle (AB), the tooth block corresponding to the Nth code piece is re-engaged with the tooth groove of the Nth code piece, so that the key rotates. The angles are the same, but there is a sequence of engagement, the angular difference when meshing is equal to the difference between angles A and B, and vice versa. The coded pieces of the other layers are also meshed and rotated in the same manner.

As shown in Fig. 13 (1), in the initial state, the clutch groove 221 on the second layer code sheet 22 is located on the lower right side, and the clutch groove 251 on the Nth code sheet 25 is located on the left side, and the two clutch recesses are The slots are not directly under the clutch pins 6, but the bumps of the two code sheets are at the same position, and the key 1 is inserted, and the teeth on the key 1 are not meshed with the slots. Rotating the key 1 clockwise, as shown in Fig. 13 (2), the slots on the second layer of code sheets 22 are just engaged with the corresponding blocks 12, and The slots on the Nth coded sheet 25 have not yet meshed with the corresponding blocks 15 (the dashed lines in the figure are not the slots of the layer). Continuing to rotate the key clockwise, as shown in Fig. 13 (3), after the tooth grooves on the second layer code piece 22 are engaged with the corresponding tooth blocks 12, the key drives the second layer code piece to rotate by a certain angle, and the Nth The slots on the layer coded sheet 25 are just engaged with the corresponding blocks 15, at which point the clutch grooves of the two layers of coded sheets are in the same position. Continue to rotate the key 90° clockwise. As shown in Fig. 13 (4), the key 1 drives the second layer code piece 22 and the Nth layer code piece 25 to rotate 90° at the same time, and rotates directly under the clutch pin 6. In this process, the second layer of the coded piece is first meshed and rotated by a certain angle, and the Nth layer of the coded piece is again engaged, and then rotated simultaneously with the second layer of the coded piece, that is, the second layer of the coded piece is advanced in advance by the angle of rotation. The angle difference between the coded piece and the Nth layer coded piece is compensated for. Similarly, the clutch grooves of the code sheets of the other layers are sequentially rotated below the clutch pins to form a clutch passage 200, and the clutch pins 6 are dropped into the clutch grooves 200, and the clutch pins 6 are interlocked with the inner sleeve to realize unlocking.

The coding mechanism uses the different positions of the inner edges of the inner circumference of the plurality of code sheets 2 to set the cogging and the different cogging heights on the same code piece, and realize high-level coding information according to the need, which can theoretically achieve an infinite order of magnitude. Coding, only by matching the key 1, the key 1 is rotated, the tooth block on the key is meshed with the tooth groove on the code piece, and finally all the code pieces are simultaneously rotated to the clutch pin 6 to unlock. Since the key 1 must be matched with the coding mechanism, and the coding state of the coding mechanism is large, the key 1 is difficult to copy, and the technical unlocking is difficult. The lock core of the coding mechanism is more secure.

Unlocking process: As shown in Fig. 14, the key 1 is completely inserted into the guide shaft 3, the key 1 is rotated clockwise, and the tooth block on the key 1 is in one-to-one correspondence with the tooth groove on the code piece, and the key 1 is continuously rotated, and the lock core is decoded. The process is as described above and as shown in FIG. 13, after being rotated into position, as shown in FIG. 15, all the clutch grooves form the clutch passage 200, the clutch groove 200 is facing the lower side of the clutch pin 6, and the spring pushes the pin 71 down. The lower part of the clutch pin 6 is squeezed into the clutch through slot 200, and the lock core 6 is interlocked with the inner sleeve 8 by the clutch pin 6. As shown in FIG. 16, the rotating key 1 continues to drive the lock cylinder, the clutch pin 6, and the inner sleeve 8 to rotate. The connecting member 84 of the inner sleeve 8 is connected to the operating system of the lock, and the connecting member drives the operating system of the lock to unlock.

When locked, the counterclockwise rotation of the key 1 drives the guide shaft 3 to rotate, and the reset strip 34 on the guide shaft 3 meshes with the reset block on one of the code sheets 2, since all the coding pieces 2 and the inner sleeve rely on the clutch pin 6 after unlocking If the guide shaft 3 drives one of the code pieces to rotate, the inner sleeve 8 also rotates in conjunction, and during the rotation, the connecting member 84 of the inner sleeve 8 is locked by the operating system of the lock. Continue to rotate counterclockwise. When the right end of the limiting groove 83 on the inner sleeve contacts the limiting pin 72, as shown in FIG. 17, the inner sleeve 8 is restricted by the limiting pin 72 and no longer rotates. The clutch pin hole 81 also faces the groove of the inner wall of the lock sleeve 9 and the top pin 71, and then rotates the key 1 counterclockwise to drive the guide shaft 3, one of the code pieces 2 rotates, and the clutch pin 6 is removed from the clutch groove. Extrusion in 200, the upper part of the clutch pin 6 enters the inner wall of the lock sleeve 9 In the groove, the counter-clockwise rotation is continued, and the reset strip 34 on the guide shaft 3 is engaged with the reset block on the other code piece 2, and the reset blocks and the slots of all the code pieces 2 are rotated to the same position, and each coded piece is on the chip. The clutch grooves are not in the same position, and the resetting of the coding mechanism is achieved.

Embodiment 2:

As shown in FIG. 18, in the present embodiment, the structure of the guide shaft 301 and the key 101 is different from that of the first embodiment. The key 101 has only one rack, and the rack has four kinds of tooth blocks of different heights, and the corresponding guide shafts. 301 also has only one strip-shaped hole, each code piece has one reset block, four step-shaped tooth slots, one of the slots of the same layer of code piece meshes with one of the tooth blocks, but each coded piece The clutch groove is different from the same position of the tooth groove. The other structure is the same as that of the first embodiment.

Embodiment 3:

As shown in FIG. 19, in the embodiment, the structure of the code piece and the key 102 is different from that of the first embodiment. Each code piece has one reset block and one slot, and the key 102 has four racks, each of which has four racks. There is only one type of tooth on the rack, but on each code piece, the clutch groove has the same position as the slot. The other structure is the same as that of the first embodiment.

In the second embodiment and the third embodiment, since the rack and the number of slots on the code piece are small, the technical method can be realized, and the amount of coded information is small. Theoretically, the value of the encoded information is infinite. However, in the physical design, factors such as the size of the structure, the amount of difference in the coding angle, and the processing performance should be considered.

Claims

The clutch lock and the key include a clutch lock cylinder, a transmission mechanism and a lock sleeve, and the key is matched with the lock cylinder. The transmission mechanism comprises an inner sleeve, a top pin, a limit pin, a clutch pin and an inner sleeve installation. In the lock sleeve, the side wall of the inner sleeve is provided with a strip hole of the clutch pin, the outer wall of the inner sleeve is opened with a limited position groove, and one end of the inner sleeve is connected with the operating system of the lock; the clutch type lock core is installed in the inner sleeve; The inner wall of the lock sleeve has a groove, the top pin and the limit pin are arranged on the side wall of the lock sleeve; the clutch pin is located at the strip hole of the clutch sleeve of the inner sleeve;

The lock core rotates to form a clutch passage groove, and the lower portion of the clutch pin enters the clutch passage groove after being pressed by the top pin, and the upper portion of the clutch pin leaves the lock sleeve groove to realize interlocking and unlocking of the lock core and the inner sleeve;

After the lock cylinder is reversely rotated and locked, the limit pin and the limit groove cooperate to restrict the inner sleeve from continuing to rotate, and the lock cylinder continues to rotate in the opposite direction, so that the lower part of the clutch pin is squeezed into the strip hole of the clutch pin, and the upper part of the clutch pin enters the recess of the lock sleeve. In the slot, the lock cylinder and the inner sleeve are uncoupled.
The clutch type lock and key according to claim 1, wherein the lock cylinder is an encoder mechanism, and the encoder mechanism comprises a plurality of code sheets, the code sheets are in the shape of a ring, and the outer edge of the ring is provided with a clutch groove. The inner edge of the ring is provided with a protrusion protruding toward the center of the ring. The protrusion is provided with a reset block and a tooth groove. The bumps of each code piece are the same, and the positions of the protrusions relative to the clutch groove are not completely the same. The code pieces are stacked in the axial direction, the center of the ring is coaxial, and the depth of the clutch groove is the same;

a gear matched with the lock cylinder is provided with a rack on the axial direction, and a plurality of tooth blocks are arranged on the rack;

When the key insertion coding mechanism rotates, the plurality of tooth blocks on the key respectively mesh with the plurality of coded chip slots to drive the code piece to rotate, so that the clutch grooves of all the code pieces form a clutch passage groove, and the clutch groove faces the clutch pin. After the lock core and the inner sleeve are linked; the key is placed on the key or the resetting bar associated with the key in the coding mechanism, and the reverse rotation key drives the reset bar to engage with the plurality of code piece reset blocks, so that the reset blocks of all the code pieces are rotated to In the same direction, the clutch groove is not in the same direction, and after the inner sleeve is restricted from rotating, the lower portion of the clutch pin is extruded out of the clutch groove, and the upper portion of the clutch pin enters the groove of the lock sleeve.
The clutch type lock and key according to claim 2, wherein the coding mechanism further comprises a guide shaft, wherein the guide shaft is located in the plurality of code sheets, the guide shaft is hollow inside, and the front end is provided with a cross section of the key. The key hole is inserted into the guide shaft through the key hole, and the frame body wall of the guide shaft is provided with a strip hole, and the tooth block on the key is exposed from the strip hole, and the outer wall of the frame body is fixed with an axial reset strip.
The clutch type lock and key according to claim 3, wherein the guide shaft has a plurality of clips, the clip is in the shape of a ring, and the outer edge of the clip is provided with a clip groove, and all the clips are provided. The sheets are in the same direction and the clip grooves are always facing the clutch pins, and the clutch pins can be caught in the clip grooves, and the clips are spaced apart from the code sheets.
The clutch type lock and key according to claim 4, wherein the outer edge of the clip is provided with a clip protrusion, the inner wall of the inner sleeve has a groove, and the protrusion is inserted into the groove.
The clutch type lock and key according to claim 3, wherein a rear guard piece is attached to a rear end of the guide shaft.
The clutch type lock and key according to claim 2, wherein the key has a plurality of axial racks, and each of the racks is provided with a plurality of blocks of different heights, each of which is disposed on the code piece. A plurality of stepped coggings, after the key is inserted into the coding mechanism, the tooth blocks are matched with the tooth grooves one by one, and are meshed while rotating.
The clutch lock and key according to claim 2, wherein the clutch groove and the engaging pin are chamfered.