Automatic lock cylinder

Abstract

The present invention discloses an automatic lock core, comprising a lock shell, a lock core, a dial sleeve, a clutch assembly and a tail scale assembly. A keyhole is provided on the lock core, and a connecting baffle, a pushing top piece and a positioning hub are sequentially and axially arranged between the end of the lock core and the clutch assembly. The connecting baffle is connected to the lock core, and a mounting groove is provided on the lock shell and on the upper side of the positioning hub. A first groove aligned with the notch of the mounting groove is provided on the top of the positioning hub, a dial ball is embedded in the first groove, and a limit spring for limiting the movement of the dial ball is installed in the mounting groove. By adding the connecting baffle, the pushing top piece and the positioning hub, the keyhole and the clutch assembly are separated, so that the key cannot directly push the clutch rotating piece. This structure, on the one hand, makes the lock safer. Even if a foreign object enters the keyhole, it will not enter deeper than the keyhole, so it is easy to remove the foreign object and is also convenient for later maintenance; on the other hand, it can ensure that the key can still be unlocked in the room when the key is forgotten to be pulled out.

Description

Technical Field

[0001] The invention relates to the technical field of locks, in particular to an automatic lock core. Background Art

[0002] The current methods of unlocking the door through the lock core of smart locks (fingerprint, magnetic card, password lock, etc.) are as follows: first, the motor is controlled by the intelligent control system to drive the tail scale assembly to rotate, the tail scale assembly is matched with the dial sleeve, and the dial sleeve rotates with the tail scale assembly, thereby realizing automatic unlocking; second, the key is manually unlocked outside the door, that is, after the key is inserted into the keyhole, the locking mechanism on the lock core is in an unlocked state, the key pushes the lock core clutch assembly to match the dial sleeve, and the tail scale assembly is pushed away from the dial sleeve, the lock core is rotated, the lock core drives the lock core clutch assembly to rotate, and the lock core clutch assembly drives the dial sleeve to rotate, thereby realizing unlocking. Although this method can realize unlocking, since the distance from the keyhole to the clutch assembly can be entered without any obstruction, once someone inserts a foreign object into the keyhole, it is not only difficult to remove or repair it later, but the inserted foreign object may cause the tail scale assembly to separate from the dial sleeve, and automatic unlocking cannot be realized in the door; or because the key is forgotten to be removed, the inserted key will also cause the tail scale assembly to separate from the dial sleeve, and automatic unlocking cannot be realized in the door. Therefore, an improved technology is urgently needed to solve this problem existing in the prior art. Summary of the invention

[0003] In order to overcome the deficiencies of the prior art, the present invention provides a lock core which can prevent foreign objects from entering the deep part of the lock cylinder and can still be easily unlocked in the room when foreign objects enter the keyhole or the key is forgotten.

[0004] The technical solution adopted by the present invention to solve its technical problem is:

[0005] An automatic lock cylinder comprises a lock shell, a lock core in the lock shell, a locking mechanism arranged on the lock shell and the lock core, a dial sleeve, a clutch assembly axially movable in the dial sleeve, and a tail scale assembly matched with the dial sleeve and the clutch assembly, wherein a key hole is provided on the lock core, a lock core cavity is provided on the lock shell, a connecting baffle, a push top piece axially movable with the rotation of the connecting baffle, and a positioning baffle matched with the push top piece are sequentially and axially arranged in the lock core cavity from the end of the lock core to the clutch assembly, and the connecting baffle is connected to the lock core. Then, the positioning gallbladder can cooperate with the shifting sleeve and the clutch assembly, a mounting groove is arranged on the lock shell and on the upper side of the positioning gallbladder, a first groove is arranged on the top of the positioning gallbladder and is aligned with the notch of the mounting groove, a shifting ball that can move up and down along the mounting groove and a limit spring that limits the movement of the shifting ball and is installed in the mounting groove are embedded in the first groove, a transition clamping portion is arranged on the pushing top piece, and when the lock gallbladder is rotated, the pushing top piece can realize the rotation action after axially moving a certain displacement along with the rotation of the connecting baffle.

[0006] A first accommodating chamber coaxial with the locking chamber is provided in the positioning gallbladder, the clutch assembly includes a clutch axis, a first clutch rotating member and a second clutch rotating member sleeved on the clutch axis, and a first spring capable of pushing the clutch axis to move axially, the first clutch rotating member is provided with a second accommodating chamber for accommodating the first spring and corresponding to the first accommodating chamber, the clutch axis can move axially in the first accommodating chamber and the second accommodating chamber; one end of the first clutch rotating member abuts against the second clutch rotating member, and the other end abuts against the positioning gallbladder.

[0007] A boss with a triangular longitudinal section is provided at one end of the connecting baffle away from the lock core, and a recess with a triangular longitudinal section matching the boss is provided at a corresponding position of the pushing top member, and the transition clamping portion on the pushing top member is a platform provided at the opening of the recess.

[0008] The tail portion of the lock housing is provided with a third accommodating cavity coaxial with the first accommodating cavity, and the tail scale assembly includes a first tail scale rotating member installed in the third accommodating cavity, a second tail scale rotating member connected to the first tail scale rotating member, and a second spring capable of pushing the second clutch rotating member to move axially.

[0009] The first tail scale rotating member is provided with a fourth accommodating chamber for accommodating the second spring and the second clutch rotating member, and the fourth accommodating chamber is coaxial with the third accommodating chamber; one end of the second spring abuts against the first tail scale rotating member, and the other end abuts against the second clutch rotating member, and the second tail scale rotating member extends from the tail of the lock housing.

[0010] The pushing top member is provided with a first clamping portion, and the positioning liner is provided with a first protrusion matched with the first clamping portion.

[0011] A third spring is arranged on the positioning liner, one end of the third spring abuts against the positioning liner, and the other end abuts against the pushing top member.

[0012] A second groove is provided in the sleeve, a second engaging portion is provided on the positioning hub, and a second protrusion matched with the second engaging portion is provided on the first clutch rotating member. The second protrusion can be matched with the second engaging portion or the second groove.

[0013] The first tail scale rotating member is provided with a third engaging portion, and the second clutch rotating member is provided with a third protrusion, and the third protrusion can be matched with the third engaging portion or the second groove.

[0014] The beneficial effects of the present invention are as follows: compared with the prior art, the present invention adds a connecting baffle connected to the lock core, a pushing top piece that can move axially with the rotation of the connecting baffle, and a fixed positioning core, which not only separates the keyhole and the clutch assembly, so that the key cannot directly push the clutch rotating piece, but drives the connecting baffle to rotate through the lock core, so that the pushing top piece moves in the direction of the pull sleeve, and then pushes the clutch assembly to move in the direction of the pull sleeve; this design structure, on the one hand, makes the lock safer, even if a foreign object enters the keyhole, it will not enter deeper than the keyhole, and it is easy to remove the foreign object and easy to repair; on the other hand, it can ensure that the key can still be automatically unlocked in the room when it is forgotten to be pulled out or a foreign object enters the keyhole. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0016] Figure 1 It is a schematic diagram of the structure of the present invention;

[0017] Figure 2 It is a schematic diagram of the structural decomposition of the present invention;

[0018] Figure 3 It is a cross-sectional view of the present invention during the unlocking process;

[0019] Figure 4 It is a schematic diagram of the structure when locked;

[0020] Figure 5 It is a schematic diagram of the structure during the unlocking process;

[0021] Figure 6 It is a structural diagram of the pull sleeve. DETAILED DESCRIPTION

[0022] Reference Figures 1 to 6 An automatic lock cylinder includes a lock shell 1, a lock core 2 in the lock shell 1, a locking mechanism arranged on the lock shell 1 and the lock core 2, a sleeve 3, a clutch assembly that can move axially in the sleeve 3, and a tail scale assembly that cooperates with the sleeve 3 and the clutch assembly. The lock shell 1 and the lock core 2 are provided with a locking mechanism, and the locking mechanism can be a locking mechanism such as a pin or a blade in the prior art. A keyhole 4 is provided on the lock core 2, and a lock core cavity 5 is provided on the lock shell 1. In the lock core cavity 5, a connecting baffle 6, a pushing top member 7, and a positioning baffle 8 are sequentially and axially arranged from the end of the lock core 2 to the clutch assembly. Wherein, the clutch assembly includes: the connecting baffle 6 is connected to the lock core 2, and this connection can be a screw connection or a clamping connection. This connection can make the connecting baffle 6 rotate with the rotation of the lock core 2. The end of the push member 7 close to the positioning gallbladder 8 is provided with a first engaging portion 72, and the end of the positioning gallbladder 8 close to the push member 7 is provided with a first protrusion 82 matched with the first engaging portion 72. Such cooperation can make the push member 7 move axially on the positioning gallbladder 8, and can also drive the positioning gallbladder 8 to rotate. The positioning gallbladder 8 is provided with a first accommodating chamber 12 coaxial with the locking gallbladder chamber 5, and the clutch assembly includes a clutch axis 13, a first clutch rotating member 14 and a second clutch rotating member 15 sleeved on the clutch axis 13, and a first spring 16 that can push the clutch axis 13 to move axially, the first clutch rotating member 14 is provided with a second accommodating chamber 17 that accommodates the first spring 16 and corresponds to the first accommodating chamber 12, and the clutch axis 13 can move axially in the first accommodating chamber 12 and the second accommodating chamber 17; one end of the first clutch rotating member 14 abuts against the second clutch rotating member 15, and the other end abuts against the positioning gallbladder 8.

[0023] As a preferred solution for the positioning liner 8 to cooperate with the pull sleeve 3 and the clutch assembly, the specific structure is: a second groove 31 is provided in the pull sleeve 3, a second engaging portion 83 is provided at one end of the positioning liner 8 close to the pull sleeve 3, and a second protrusion 141 that cooperates with the second engaging portion 83 is provided on the first clutch rotating member 14, and the second protrusion 141 can cooperate with the second engaging portion 83 or the second groove 31 of the pull sleeve 3. When a part of the second protrusion 141 is engaged with the second engaging portion 83 and the other part is engaged with the second groove 31, at this time, as the positioning liner 8 rotates, the pull sleeve 3 rotates accordingly, thereby realizing manual unlocking. When the second protrusion 141 is only engaged with the second engaging portion 83, but not with the pull sleeve 3, that is, separated from the pull sleeve 3, automatic unlocking can be realized in the door.

[0024] The lock housing 1 is provided with a mounting groove 9 on the upper side of the positioning hub 8. The top of the positioning hub 8 is provided with a first groove 81 aligned with the notch of the mounting groove 9. The first groove 81 is embedded with a ball 10 that can move up and down along the mounting groove 9 and a limit spring 11 that limits the movement of the ball 10 and is installed in the mounting groove 9. When the lock hub 2 is rotated, a transition clamp is provided on the push top member 7, so that the rotation action is realized after the axial movement of a certain displacement with the rotation of the connecting baffle 6. The certain displacement here means that the displacement of the movement is sufficient to push the second clutch rotating member 15 in the tail scale assembly away from the dial sleeve 3, that is, the tail scale assembly is separated from the dial sleeve 3. In order to realize these actions, the specific structure is preferably: a boss 61 with a triangular longitudinal section is provided at one end of the connecting baffle 6 away from the lock hub 2, and a notch 71 with a triangular longitudinal section that matches the boss 61 is provided at the corresponding position of the push top member 7, and a platform 711 is provided at the opening of the notch 71.

[0025] In order to enable the push member 7 to reset after unlocking, a third spring 23 is provided on the positioning liner 8, one end of the third spring 23 abuts against the positioning liner 8, and the other end abuts against the push member 7. The spring can be arranged in the first engaging portion 72 and extend out, or it can be arranged at other parts of the positioning liner 8.

[0026] The tail of the lock housing 1 is provided with a third accommodating chamber 18 coaxial with the first accommodating chamber 12 , and the tail scale assembly includes a first tail scale rotating member 19 installed in the third accommodating chamber 18 , a second tail scale rotating member 20 and a second spring 21 capable of pushing the second clutch rotating member 15 to move axially.

[0027] The first tail scale rotating member 19 is provided with a fourth accommodating chamber 22 for accommodating the second spring 21 and the second clutch rotating member 15, and the fourth accommodating chamber 22 is coaxial with the third accommodating chamber 18; one end of the second spring 21 abuts against the first tail scale rotating member 19, and the other end abuts against the second clutch rotating member 15, and the second tail scale rotating member 20 extends from the tail of the lock housing 1.

[0028] As a preferred solution for the tail scale assembly to cooperate with the pull sleeve 3 and the second clutch rotating member 15, the first tail scale rotating member 19 is provided with a third engaging portion 191, and the second clutch rotating member 15 is provided with a third protrusion 151, and the third protrusion 151 can cooperate with the third engaging portion 191 and the second groove 31. When a part of the third protrusion 151 is engaged with the third engaging portion 191 and the other part is engaged with the second groove 31, at this time, as the first tail scale rotating member 19 rotates, the pull sleeve 3 rotates accordingly, thereby realizing automatic unlocking. When the third protrusion 151 is only engaged with the first tail scale rotating member 19, but not with the pull sleeve 3, that is, separated from the pull sleeve 3, the door can be manually unlocked outside.

[0029] The working process of the present invention is as follows:

[0030] 1. Manual unlocking process with key:

[0031] When locked, the locking mechanism is in a locked state. Under the action of the second spring 21, the second clutch rotating member 15 is pushed to move axially in the direction of the lock core. A part of the third protrusion 151 of the second clutch rotating member 15 is embedded in the third engaging portion 191 of the first tail scale rotating member 19, and the other part is embedded in the groove 31 of the pull sleeve 3. The first clutch rotating member 14 is pushed away from the pull sleeve 3; under the action of the first spring 16, the clutch axis 13 is reset and abuts against the pusher 7. Under the action of the third spring 23, the pusher 7 is reset and fits with the connecting baffle 6. When the key is inserted into the keyhole 4 and inserted into the unlocking state, that is, the locking mechanism is unlocked, and then the key is turned, the lock core 2 rotates, and the triangular boss 61 on the connecting baffle 6 rotates. Since the ball 10 restricts the positioning core 8, the positioning core 8 cannot rotate at this time. Since the push top member 7 is restricted by the first protrusion 82 of the positioning core 8, it cannot rotate either. The triangular boss 61 rotates in the triangular recess 71 of the push top member 7, so that the push top member 7 pushes the clutch shaft 13 to move axially in the direction of the pull sleeve 3. The clutch shaft 13 presses the first spring 16, so that the first clutch rotating member 14 moves axially in the direction of the pull sleeve 3, so that the first clutch rotating member 14 is matched with the pull sleeve 3. When it moves a certain distance After that, the second clutch rotating member 15 is pushed away from the dial sleeve 3, and the boss 61 has rotated a certain angle, so that the boss 61 contacts the platform 711 on the recess 71. At this time, the rotational force of the pushing top member 7 is greater than the limiting force of the dial bead 10. When the key is turned again, the lock core 2 drives the connecting baffle 6, the pushing top member 7 and the positioning bead 8 to rotate together. At this time, the dial bead 10 escapes from the first groove 81 and moves upward along the mounting groove 9. At this time, a part of the second protrusion 141 of the first clutch rotating member 14 is engaged with the second engaging portion 83 of the positioning bead 8, and the other part is engaged with the second groove 31 of the dial sleeve 3. The positioning bead 8 drives the first clutch rotating member 14 to rotate, and then drives the dial sleeve 3 to rotate to achieve unlocking.

[0032] 2. Forget to take out the key, unlock the door in the room after closing it:

[0033] The key is not pulled out. Under the action of the second spring 21, a part of the second protrusion 151 of the second clutch rotating member 15 is embedded in the third engaging portion 191 of the first tail scale rotating member 19, and the other part is embedded in the groove 51 of the pull sleeve 3, that is, the first tail scale rotating member 19 is engaged with the pull sleeve 3, and the first clutch rotating member 14 is pushed away from the pull sleeve 3. At this time, the motor is started in the room to drive the second tail scale rotating member 20 to rotate, and then drive the first tail scale rotating member 19 to rotate, so that the pull sleeve 3 rotates, and the lock can be unlocked.

[0034] 3. Unlocking process in a house when someone inserts a foreign object into the keyhole:

[0035] After the foreign object is inserted, the connecting baffle 6 prevents the foreign object from further entering. Since the first clutch rotating member 14 and the pull sleeve 3 are in a separated state, and the tail scale assembly is combined with the pull sleeve 3, the motor can be started in the house to drive the tail scale to unlock.

[0036] The above implementation modes cannot limit the protection scope of the present invention. The equivalent modifications and changes made by those skilled in the art without departing from the overall concept of the present invention are still within the scope of the present invention.

Claims

1. An automatic lock cylinder, comprising a lock housing (1), a lock core (2) in the lock housing (1), a locking mechanism arranged on the lock housing (1) and the lock core (2), a pull sleeve (3), a clutch assembly axially movable in the pull sleeve (3), and a tail gauge assembly cooperating with the pull sleeve (3) and the clutch assembly, wherein the lock core (2) is provided with a key hole (4), the lock housing (1) is provided with a lock core cavity (5), and the characteristics are as follows: A connecting baffle (6), a pushing top member (7) that can axially move with the rotation of the connecting baffle (6), and a positioning baffle (8) that cooperates with the pushing top member (7) are sequentially and axially arranged in the lock chamber cavity (5) from the end of the lock chamber (2) to the clutch assembly. The connecting baffle (6) is connected to the lock chamber (2). The positioning baffle (8) can cooperate with the pull sleeve (3) and the clutch assembly. A mounting groove (9) is arranged on the lock housing (1) and on the upper side of the positioning baffle (8). A first groove (81) aligned with the notch of the mounting groove (9) is arranged at the top of the locking cylinder (8), a ball (10) movable up and down along the mounting groove (9) and a limit spring (11) installed in the mounting groove (9) are embedded in the first groove (81), and a transition clamping portion is arranged on the push top member (7). When the lock cylinder (2) is rotated, the push top member (7) can move axially for a certain displacement along with the rotation of the connecting baffle (6) to realize the rotation action; The positioning gallbladder (8) is provided with a first accommodating chamber (12) coaxial with the locking gallbladder chamber (5); the clutch assembly comprises a clutch axis (13), a first clutch rotating member (14) sleeved on the clutch axis (13), a second clutch rotating member (15), and a first spring (16) capable of pushing the clutch axis (13) to move axially; the first clutch rotating member (14) is provided with a second accommodating chamber (17) corresponding to the first accommodating chamber (12) for accommodating the first spring (16); the clutch axis (13) can move axially in the first accommodating chamber (12) and the second accommodating chamber (17); one end of the first clutch rotating member (14) abuts against the second clutch rotating member (15), and the other end abuts against the positioning gallbladder (8); A boss (61) with a triangular longitudinal section is provided at one end of the connecting baffle (6) away from the lock core (2), and a recess (71) with a triangular longitudinal section matching the boss (61) is provided at a corresponding position of the pushing top member (7), and a transition clamping portion on the pushing top member (7) is a platform (711) provided at the opening of the recess (71).

2. The automatic lock cylinder according to claim 1, characterized in that The tail portion of the lock housing (1) is provided with a third accommodating chamber (18) coaxial with the first accommodating chamber (12); the tail scale assembly comprises a first tail scale rotating member (19) installed in the third accommodating chamber (18), a second tail scale rotating member (20) connected to the first tail scale rotating member (19), and a second spring (21) capable of pushing the second clutch rotating member (15) to move axially.

3. The automatic lock cylinder according to claim 2, characterized in that The first tail scale rotating member (19) is provided with a fourth accommodating chamber (22) for accommodating the second spring (21) and the second clutch rotating member (15), and the fourth accommodating chamber (22) is coaxial with the third accommodating chamber (18); one end of the second spring (21) abuts against the first tail scale rotating member (19), and the other end abuts against the second clutch rotating member (15), and the second tail scale rotating member (20) protrudes from the tail of the lock housing (1).

4. The automatic lock cylinder according to claim 1, characterized in that The push top member (7) is provided with a first clamping portion (72), and the positioning liner (8) is provided with a first protrusion (82) that matches the first clamping portion (72).

5. The automatic lock cylinder according to claim 1, characterized in that A third spring (23) is arranged on the positioning liner (8), one end of the third spring (23) abuts against the positioning liner (8), and the other end abuts against the push top member (7).

6. The automatic lock cylinder according to claim 3, characterized in that A second groove (31) is provided in the sleeve (3), a second engaging portion (83) is provided on the positioning hub (8), and a second protrusion (141) matched with the second engaging portion (83) is provided on the first clutch rotating member (14), and the second protrusion (141) can be matched with the second engaging portion (83) or the second groove (31).

7. The automatic lock cylinder according to claim 6, characterized in that The first tail scale rotating member (19) is provided with a third engaging portion (191), and the second clutch rotating member (15) is provided with a third protrusion (151), and the third protrusion (151) can be matched with the third engaging portion (191) or the second groove (31).

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