Knob and lock cylinder linkage mechanism of lock

Abstract

The utility model discloses a knob and lock cylinder linkage mechanism of a lock, which is not easy to damage a lock cylinder. The knob and lock cylinder linkage mechanism of the lock comprises a panel, a knob, a lock cylinder and a movable block. The lower end of the knob is rotationally matched in a rotating shaft hole of the panel; the lock cylinder is rotationally matched in the knob; the movable block is arranged between the circumferential face of the lock cylinder and the inner wall of the rotary knob and is in sliding fit with the rotary knob in the axis direction of the rotary knob. A circle of step face is arranged on the circumferential face of the lock cylinder, a first groove and a second groove are formed in the step face, the two side walls of the first groove are inclined faces, and the side wall, close to the first groove, of the second groove is an inclined face. The surface, facing the lock cylinder, of the movable block is provided with a first protrusion movably matched with the step face or the first groove or the second groove along with rotation of the lock cylinder. A second protrusion is arranged on the surface, facing the panel, of the movable block and abuts against the circumferential face of the rotating shaft hole, a third groove movably matched with the second protrusion is formed in the circumferential face of the rotating shaft hole, and one side wall of the third groove is an inclined face.

Description

Technical Field

[0001] The utility model relates to the technical field of locks, in particular to a linkage mechanism between a knob and a lock core of a lock. Background Art

[0002] Currently, there are many ways to unlock locks, such as fingerprint, password, iris, voiceprint, and key. For locks that rely on passwords, such as smart electronic locks or key locks, an emergency lock cylinder is usually installed in the lock's operating mechanism (i.e., the knob) to prevent unexpected situations such as power outages and forgotten passwords from causing normal unlocking. When necessary, a key can be inserted for emergency unlocking.

[0003] In the prior art, whether in the unlocking or locking process, when the user excessively turns the knob or lock cylinder, it is easy to cause damage to the lock cylinder, especially when the key is used to unlock the lock in an emergency and then locked again, thereby affecting the service life and functional operation of the lock. Utility Model Content

[0004] The purpose of the utility model is to provide a linkage mechanism between a lock knob and a lock core, which solves the problems existing in the prior art and can protect the lock core during operation without causing damage to the lock core.

[0005] In order to achieve the above objectives, the solution of the present invention is:

[0006] The lock core is locked and the lock core is unlocked, and the lock core is unlocked.

[0007] When the lock is in an initial state, the second protrusion falls into the third groove, and the first protrusion has no contact with the lock core; when the movable block rotates with the knob, the second protrusion climbs along the inclined surface of the third groove to allow the first protrusion to enter the first groove; when the user inserts the key and turns the lock core to unlock, the lock core rotates so that the lock core contacts the first protrusion, and the lock core rotates synchronously with the knob and the movable block, and the second protrusion climbs along the inclined surface of the third groove to allow the first protrusion to enter the second groove; when the user turns the lock core to lock, the movable block rotates synchronously with the lock core and drives the knob to rotate synchronously until the second protrusion falls into the third groove when it is rotated to the locked position, the knob stops rotating, and the lock core continues to rotate to the initial position.

[0008] The inner wall of the knob is provided with a sliding groove for the movable block to slide with.

[0009] The lower end of the knob is configured to be rotatably engaged with a rotating shaft in the rotating shaft hole.

[0010] The upper end circumference of the knob is provided with a plurality of anti-slip grooves.

[0011] A first stopper and a second stopper for limiting a relative angle are provided between the inner wall of the knob and the circumferential surface of the lock core. The second stopper abuts against the first stopper as the lock core rotates in the knob.

[0012] The surface of the second protrusion is configured as an arc surface.

[0013] The panel is provided with an unlock mark and a lock mark on the circumference of the shaft hole, and the circumference of the knob is provided with an indication protrusion, and the indication protrusion points to the unlock mark or the lock mark as the knob is rotated.

[0014] After adopting the above technical solution, the utility model has the following technical effects:

[0015] The utility model designs a movable block and a corresponding detailed linkage structure between the knob and the lock core, so that when the knob and the lock core are rotated by an external force, they can drive each other through the movable block. The movable block plays a buffering role in delaying the linkage between the two, thereby protecting the lock core and making it less likely to be damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is an exploded view of a specific embodiment of the utility model;

[0017] Figure 2 A top view of a knob according to a specific embodiment of the present invention;

[0018] Figure 3 This is a front view of the lock core of a specific embodiment of the utility model;

[0019] Figure 4 This is a front view of a stopper according to a specific embodiment of the present utility model;

[0020] Figure 5 This is a rear view of the stopper of a specific embodiment of the utility model;

[0021] Figure 6 A top view of a panel according to a specific embodiment of the present invention;

[0022] Figure 7 for Figure 6 Cross-sectional view in the AA direction;

[0023] Figure 8 This is a schematic diagram of the state of the utility model when the knob is turned to unlock (the knob is hidden);

[0024] Figure 9 This is a schematic diagram of the state of the utility model when the lock cylinder is rotated to unlock (the knob is hidden);

[0025] Description of Figure Numbers:

[0026] 1-panel; 11-shaft hole; 12-third groove; 13-unlock mark; 14-lock mark;

[0027] 2-knob; 21-slide groove; 22-rotating shaft; 23-anti-slip groove; 24-first stop; 25-indicating protrusion;

[0028] 3-lock cylinder; 31-step surface; 32-first groove; 33-second groove; 34-second stopper;

[0029] 4-movable block; 41-first protrusion; 42-second protrusion; 421-arc surface. DETAILED DESCRIPTION

[0030] In order to further explain the technical solution of the present invention, the present invention will be described in detail below through specific embodiments.

[0031] refer to Figure 1-9 As shown, the utility model discloses a knob and lock core linkage mechanism of a lock, comprising a panel 1, a knob 2, a lock core 3 and a movable block 4;

[0032] The lower end of the knob 2 is rotatably engaged with the shaft hole 11 of the panel 1; the lock core 3 is rotatably engaged with the knob 2; the movable block 4 is arranged between the circumference of the lock core 3 and the inner wall of the knob 2, and is slidably engaged with the knob 2 along the axial direction of the knob 2;

[0033] The circumference of the lock core 3 is provided with a circle of stepped surface 31, and a first groove 32 and a second groove 33 are provided on the stepped surface 31. Both side walls of the first groove 32 are inclined surfaces, and the side wall of the second groove 33 close to the first groove 32 is also inclined surface;

[0034] The surface of the movable block 4 facing the lock cylinder 3 is provided with a first protrusion 41 which movably cooperates with the step surface 31, the first groove 32 or the second groove 33 as the lock cylinder 3 rotates; the surface of the movable block 4 facing the panel 1 is provided with a second protrusion 42, which abuts the circumferential surface of the rotating shaft hole 11, and the circumferential surface of the rotating shaft hole 11 is provided with a third groove 12 for movably cooperating with the second protrusion 42, and one side wall of the third groove 12 is a slope.

[0035] Through the above solution, the present invention designs a movable block 4 and corresponding detailed linkage structure between the knob 2 and the lock core 3, so that when the knob 2 and the lock core 3 are rotated by external force, they can drive each other through the movable block 4. In particular, in the process of emergency unlocking with the key and then locking with the key, the movable block 4 plays a buffering role in delaying the linkage between the two, thereby protecting the lock core 3 and making it less likely to be damaged. Specifically: See Figure 8 When the user only turns the knob 2 to unlock, in the initial state, the second protrusion 42 of the movable block 4 falls into the third groove 12 of the panel 1, and its first protrusion 41 has no contact with the lock cylinder 3. When the movable block 4 rotates along with the knob 2, the second protrusion 42 climbs along the inclined surface of the third groove 12, so that the first protrusion 41 enters the first groove 32. At this time, the second protrusion 42 has completely left the third groove 12 and the first protrusion 41 has completely entered the first groove 32, and the knob 2 and the lock cylinder 3 begin to rotate synchronously; see Figure 9 When the user inserts the appropriate key and turns the lock cylinder 3 to unlock, the lock cylinder 3 and the knob 2 are staggered relative to each other until a certain angle. At this time, the lock cylinder 3 contacts the first protrusion 41 of the movable block 4, and the lock cylinder 3 continues to rotate together with the knob 2, and the knob 2 drives the movable block 4 to rotate synchronously. The movable block 4 uses the second protrusion 42 to climb through the third groove 12 of the panel 1, so that the first protrusion 41 enters the second groove 33; when the user turns the lock cylinder 3 to lock, since the first protrusion 41 is stuck in the second groove 33, the movable block 4 is pushed by the lock cylinder 3 to rotate synchronously, and drives the knob 2 to rotate synchronously until the second protrusion 42 falls into the third groove 12 of the panel 4 when it is rotated to the locked position. The knob 2 no longer rotates, and the lock cylinder 3 can continue to rotate to the initial position.

[0036] Specific embodiments of the present invention are shown below.

[0037] The inner wall of the knob 2 is provided with a slide groove 21 for sliding engagement of the movable block 4. The slide groove 21 is used to guide the sliding direction of the movable block 4 to ensure that it can slide along the axial direction of the knob 2, thereby improving the structural stability of the product.

[0038] The lower end of the knob 2 is provided as a rotating shaft 22 which is rotatably fitted into the rotating shaft hole 11 .

[0039] The upper end surface of the knob 2 is provided with a plurality of anti-slip grooves 23 to facilitate the user to rotate the knob 2 without slipping.

[0040] A first stop 24 and a second stop 34 for limiting the relative angle are provided between the inner wall of the knob 2 and the circumferential surface of the lock core 3. The second stop 34 abuts against the first stop 24 as the lock core 3 rotates in the knob 2, thereby limiting the maximum angle of rotation of the lock core 3 and playing a limiting role.

[0041] The surface of the second protrusion 42 is configured as an arc surface 421 , which facilitates the second protrusion 42 to move smoothly in the third groove 12 of the panel 1 and avoids excessive friction.

[0042] The panel 1 is provided with an unlock mark 13 and a lock mark 14 on the circumference of the shaft hole 11, and an indicator protrusion 25 is provided on the circumference of the knob 2. The indicator protrusion 25 points to the unlock mark 13 or the lock mark 14 as the knob 2 is rotated, so that the user can quickly identify the current status of the lock.

[0043] The above embodiments and drawings do not limit the product form and style of the present invention. Any appropriate changes or modifications made by ordinary technicians in the relevant technical field should be deemed to be within the patent scope of the present invention.

Claims

1. A lock knob and lock cylinder linkage mechanism, characterized by: Including panel, knob, lock cylinder and movable block; The lower end of the knob is rotatably engaged in the shaft hole of the panel; the lock core is rotatably engaged in the knob; the movable block is arranged between the circumference of the lock core and the inner wall of the knob, and is slidably engaged with the knob along the axial direction of the knob; The circumference of the lock core is provided with a circle of stepped surface, and the stepped surface is provided with a first groove and a second groove, both side walls of the first groove are inclined surfaces, and the side wall of the second groove close to the first groove is also an inclined surface; The surface of the movable block facing the lock core is provided with a first protrusion that movably cooperates with the step surface, the first groove or the second groove as the lock core rotates; the surface of the movable block facing the panel is provided with a second protrusion, the second protrusion abuts the circumferential surface of the rotating shaft hole, and the circumferential surface of the rotating shaft hole is provided with a third groove for movably cooperating with the second protrusion, and one side wall of the third groove is a slope.

2. The knob and lock cylinder linkage mechanism of a lock according to claim 1, characterized in that: When the lock is in an initial state, the second protrusion falls into the third groove, and the first protrusion has no contact with the lock core; when the movable block rotates along with the knob, the second protrusion climbs along the inclined surface of the third groove so that the first protrusion enters the first groove; When the user inserts the key and rotates the lock core to unlock the lock, the lock core rotates so that the lock core contacts the first protrusion, and the lock core rotates synchronously with the knob and the movable block, and the second protrusion climbs along the inclined surface of the third groove so that the first protrusion enters the second groove; When the user rotates the lock core to lock, the movable block rotates synchronously with the lock core and drives the knob to rotate synchronously until the second protrusion falls into the third groove when it rotates to the locked position. The knob stops rotating and the lock core continues to rotate to the initial position.

3. The knob and lock cylinder linkage mechanism of a lock according to claim 1, characterized in that: The inner wall of the knob is provided with a sliding groove for the movable block to slide with.

4. The knob and lock cylinder linkage mechanism of a lock according to claim 1, characterized in that: The lower end of the knob is configured to be rotatably engaged with a rotating shaft in the rotating shaft hole.

5. The lock knob and lock cylinder linkage mechanism according to claim 1, characterized in that: The upper end circumference of the knob is provided with a plurality of anti-slip grooves.

6. The knob and lock cylinder linkage mechanism of a lock according to claim 1, characterized in that: A first stopper and a second stopper for limiting a relative angle are provided between the inner wall of the knob and the circumferential surface of the lock core. The second stopper abuts against the first stopper as the lock core rotates in the knob.

7. The knob and lock cylinder linkage mechanism of a lock according to claim 1, characterized in that: The surface of the second protrusion is configured as an arc surface.

8. The knob and lock cylinder linkage mechanism of a lock according to claim 1, characterized in that: The panel is provided with an unlock mark and a lock mark on the circumference of the shaft hole, and the circumference of the knob is provided with an indication protrusion, and the indication protrusion points to the unlock mark or the lock mark as the knob is rotated.

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