An intelligent lock clutch structure that can prevent violent twisting and opening

Abstract

The present invention relates to a smart lock clutch structure that can prevent violent twisting. The structure comprises a handle shaft and a rotor. The handle shaft is provided with a rotor slot for mounting the rotor. A clutch plate slot is provided on one side of the handle shaft. The clutch plate slot is spring-connected to the side of one end of a clutch plate, and the other end of the clutch plate is pivotally connected to the handle shaft. A boss is provided on the side of the rotor to cooperate with the clutch plate. This structure solves the technical problem of a lock being opened when the internal limit stop is violated by violently turning the handle.

Description

Technical Field

[0001] The present invention belongs to the technical field of intelligent locks, and in particular relates to a clutch structure of a lock. Background Art

[0002] Smart locks are popular among users for their ease of use. Currently, there are a wide variety of smart locks for security doors. One type is a smart lock with handles on both the front and rear panels. In this structure, a square rotor inside a clutch on the front panel is connected to the lock body via a square rod for unlocking the lock body. In the normal locked state, pressing the handle prevents the rotor from rotating. When the correct unlocking information, such as a fingerprint or password, is entered, the unlocking motor pushes the clutch pin, connecting the square rotor to the handle shaft. Pressing the handle down unlocks the door, and lifting the handle drives the square rotor to rotate, enabling rapid locking.

[0003] In the locked state, the clutch pin on the handle shaft is disengaged from the rotor, and the idle rotation angle between the rotor and the handle shaft is set within 90 degrees or 180 degrees. Due to the internal limit function, the handle can only idle within the unlocking angle of about 50 degrees. When the handle is turned to this angle, it cannot be turned further and the lock cannot be opened.

[0004] When the handle is violently turned to break the internal limit, and the rotation angle is greater than the idle rotation angle of the rotor, further turning the handle will drive the rotor to rotate and open the lock. Due to this defect, the risk of the lock being stolen is very high. Summary of the Invention

[0005] In order to solve the above technical problems, a smart lock clutch structure that can prevent violent twisting is provided, thereby solving the technical problem that after the violent rotation of the handle destroys the internal limit, continuing to rotate the handle will drive the square core rotor to rotate and thus open the lock.

[0006] A smart lock clutch structure that resists violent opening is provided. The structure comprises a handle shaft and a rotor. The handle shaft is provided with a rotor slot for mounting the rotor. The structure is characterized in that: a clutch plate slot is provided on one side of the handle shaft, housing a clutch plate and a clutch plate spring. The outer end of the clutch plate is rotatably seated within the clutch plate slot, providing space for the clutch plate to rotate. The clutch plate is located outside the rotor, and the clutch plate spring acts on the clutch plate, turning the inner end of the clutch plate toward the rotor. A boss is provided on the side of the rotor, and the inner end of the clutch plate acts on the boss of the rotor. When the handle shaft rotates in one direction, the inner end of the clutch plate abuts against the side of the boss, thereby rotating the rotor and the lock body unlocking rod connected to the rotor (this is the locked state). When the handle shaft rotates in the other direction, the end surface of the boss presses the clutch plate toward the clutch plate slot, causing the handle shaft to rotate.

[0007] Preferably, the handle shaft is symmetrically provided with a clutch plate groove, a clutch plate that cooperates with the boss, and a clutch plate spring connected to the clutch plate. An adjustment column is installed between the clutch plates, and a top piece is provided on the adjustment column. The top piece is used to push open the clutch plate. Since there are two types of doors that open left or right, an adjustment column is provided between the two symmetrically arranged clutch plates. By placing the top piece on the adjustment column against one of the clutch plates, the clutch plate compresses the clutch plate spring so that the end of the clutch plate cannot hit the side of the boss, thereby making the invention applicable to both left-opening and right-opening doors.

[0008] Preferably, the adjustment column is provided with a push piece groove, a push piece spring is provided between the push piece and the push piece groove, and the clutch plate is connected by the corresponding curved side surface of the handle shaft. The push piece groove, the push piece spring, and the curved surface on the handle shaft connecting the two clutch plates are provided. The clutch plate abutted by the push piece can be adjusted by directly rotating the adjustment column.

[0009] Preferably, the door also includes a handle, a handle reversing screw, and a handle return torsion spring. The bottom of the handle reversing screw blocks the protruding end of the handle return torsion spring, and the handle return torsion spring is mounted on the panel. To change direction, the handle reversing screw is unscrewed, and the handle reversing screw no longer blocks the protruding end of the handle return torsion spring. This allows the handle to be adjusted in direction without removing it, accommodating both left- and right-opening door situations. This allows for applications where the handle needs to be removed for reversing direction.

[0010] Preferably, the lock further includes a handle, which is threadedly connected to the lower center portion of the handle shaft. A handle reset torsion spring is installed between the handle shaft and the lock body panel. To change direction, the handle is reversed by unscrewing the lower center screw of the handle shaft. This allows for reversing without removing the handle.

[0011] Preferably, the bottom of the rotor is provided with a motor unlocking slot for engaging a clutch pin, which is in driving connection with the motor. After the smart lock passes verification, the motor starts to insert the clutch pin into the motor unlocking slot. At this point, rotating the handle shaft directly drives the lock body unlocking rod, thereby opening and closing the lock.

[0012] Preferably, a cover plate is further included which is fixedly connected to the handle shaft to prevent the clutch plate or the adjusting column and other parts from falling out during operation and can also be used as a mounting position for the rotating shaft of the clutch plate or the adjusting column.

[0013] Compared to existing smart locks, the anti-riot clutch provided by the present invention locks the lock body when rotated in one direction, but can only rotate 365 degrees when rotated in the other direction. Therefore, it is impossible to open the lock by forcibly turning the handle to rotate the internal clutch structure beyond the limit. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A parts diagram of an embodiment of the present invention;

[0015] Figure 2 It is a reversible handle shaft component and some parts that match it without removing the handle. Figure 1 ;

[0016] Figure 3 It is a reversible handle shaft component and some parts that match it without removing the handle. Figure 2 ;

[0017] Figure 4 This is a top view of a reversible handle shaft that does not require removal of the handle;

[0018] Figure 5 This is the initial state of the handle and handle shaft when the door is left-opening and the handle is not removed;

[0019] Figure 6 This is a schematic diagram of locking the handle when the left-opening door is lifted up without removing the handle;

[0020] Figure 7 This is a diagram of pressing the handle normally when opening the door on the left without removing the handle;

[0021] Figure 8 This is a diagram showing excessive downward pressure on the handle (forced opening) when opening a left-hand reversing door without removing the handle.

[0022] Figure 9 This is the initial state of the handle and handle shaft when the door is opened to the right without removing the handle;

[0023] Figure 10 This is a schematic diagram of locking the handle when the door is opened to the right without removing the handle;

[0024] Figure 11 This is a diagram of pressing the handle normally when opening the door to the right without removing the handle;

[0025] Figure 12 This is a diagram showing excessive downward pressure on the handle (forced opening) when opening a right-hand reversing door without removing the handle.

[0026] Figure 13 A handle shaft component and some parts that match it. Figure 1 ;

[0027] Figure 14 A handle shaft component and some parts that match it. Figure 2 ;

[0028] Figure 15 This is a top view of a handle shaft component with a reversible handle.

[0029] Figure 16This is the initial state of the handle and handle shaft when removing the handle of a reversing right-opening door;

[0030] Figure 17 This is a schematic diagram of locking the handle when the handle is removed and the door is opened leftward;

[0031] Figure 18 This is a schematic diagram of pressing the handle normally when the handle is removed and the reversing type door opens to the left;

[0032] Figure 19 This is a diagram showing excessively pressing the handle (forced opening) when opening the left door with the handle removed.

[0033] Figure 20 This is the initial state of the handle and handle shaft when removing the handle of a reversing right-opening door;

[0034] Figure 21 This is a schematic diagram of locking the handle when the handle is removed and the door is opened right;

[0035] Figure 22 This is a schematic diagram of pressing the handle normally when opening the right door with the handle removed;

[0036] Figure 23 This is a diagram showing excessive downward pressure on the handle (violent opening) when opening the right-hand door with the handle removed;

[0037] Figure 24 For the adjustment column;

[0038] Figure 25 For the clutch plate;

[0039] Figure 26 For the rotor.

[0040] Reference numerals:

[0041] 1. Lock body unlocking square rod; 2. Rotor; 3. Handle shaft; 4. Panel; 5. Handle; 6. Handle reset torsion spring; 7. Cover; 8. Motor; 9. Clutch pin; 10. Handle rotation direction; 21. Boss; 22. Motor unlocking slot; 23. Rotor slot; 24. Square rod hole; 31. Clutch plate; 32. Clutch plate spring; 321. Clutch plate spring slot; 35. Adjusting column; 351. Adjusting column slot; 352. Top piece; 353. Top piece slot; 354. Top piece spring; 36. Handle reversing screw; 37. Handle shaft; 38. Clutch plate slot; 39. Adjusting column mounting slot; 71. Cover fixing screw. DETAILED DESCRIPTION

[0042] The present invention is described in further detail below with reference to the embodiments.

[0043] Example 1: Figure 1As shown, a smart lock clutch structure that can prevent violent twisting includes a handle shaft 3, a rotor 2, a handle 5, and a lock body panel 4. A rotor slot 23 is provided inside the handle shaft 3, and the rotor 2 is rotatably installed in the rotor slot 23. A lock body unlocking square rod 1 is installed in the center of the rotor 2, and a boss 21 that cooperates with the clutch plate 31 is provided on the side of the rotor 2; the handle shaft 3 is rotatably installed on the lock body panel 4, and a handle 5 is installed on the bottom of the handle shaft 3. A clutch plate slot 38 is provided on the top of the handle shaft 3, and the clutch plate slot 38 (a clutch plate spring slot 321 can be provided in the clutch plate slot) is elastically connected to the side of one end of the clutch plate 31 through a clutch plate spring 32, and the other end of the clutch plate 31 is pivotally connected to the handle shaft 3. When the handle 5 is turned, the handle 5 drives the handle shaft 3 to rotate on the lock body panel 4. The clutch plate 31 can be sheet-shaped, plate-shaped, or can be as follows Figure 25 The flap is bent to one side, and its end away from the pivot end is used to support the side of the boss 21, and its side facing the rotor 2 allows the boss 21 to slide over it.

[0044] The working principle of the present invention is as follows: When locking, the handle 5 rotates, driving the clutch plate 31 on the handle shaft 3. After the clutch plate 31 rotates, its inner end eventually presses against the side of the boss on the rotor 2, causing the boss 21 to rotate. Driven by the boss 21, the rotor 2 rotates in one direction, thereby driving the lock body unlocking square rod 1 at the center of the rotor 2 to rotate the lock body to lock. When the handle 5 rotates and drives the clutch plate 31 on the handle shaft 3 in the other direction, the clutch plate 31 is pressed against the clutch plate groove 38 by the boss 21, and thus no longer presses against the boss 21. In other words, the handle 5 can only rotate idly. Therefore, the lock body using this embodiment cannot be unlocked by forcibly turning the handle 5.

[0045] Example 2, based on Example 1: (as Figure 2-4 (13-15) The clutch plates 31 of the present invention can be symmetrically arranged in two, i.e., each symmetrically provided with a clutch plate slot 38 and a clutch plate spring 32. An adjustment post 35 is provided between the two clutch plates 31, and a top member is connected to the adjustment post 35. The top member can be in the shape of a bead, a square, a bullet, etc., and its working principle is to cooperate with the inner surface of the clutch plate 31 to displace the clutch plate 31 outward.

[0046] The working principle is: by adjusting the direction of the adjustment column so that the top piece on it presses the inner end of one of the clutch plates 31 to press the clutch plate 31 toward the clutch plate groove 38, so that the end of the clutch plate 31 will no longer touch the boss 21. (As shown Figure 5-12 ) According to the different rotation directions of the handle shaft 3 when the door is opened to the left or right, adjust the direction of the adjustment column (for example Figure 5-8) When the door is opened to the left, rotate the adjustment column so that the top piece inside the adjustment column presses upward against the clutch plate 31, causing one end of the clutch plate 31 to rotate around the axis and the clutch plate 31 to stop working. From the initial state, lift the handle 5, the handle shaft 3 rotates counterclockwise, and the clutch plate 31 at the bottom rotates upward to press against the boss 21 of the rotor 2, thereby driving the boss 21, the rotor 2, and the lock body unlocking square rod 1 on the rotor 2 to rotate counterclockwise to lock the lock body. From the initial state, press the handle 5 downward, the clutch plate 31 at the top rotates clockwise but no longer works because it is pressed by the top piece, and the boss 21 will not be pressed by the end of the clutch plate above. When the clutch plate rotates excessively clockwise, the clutch plate 31 at the bottom will be pressed toward the clutch plate groove 38 under the pressure of the boss 21. The boss 21 slides past the side of the clutch plate 31, so it will not press against the boss 21, that is, the handle 5 can only rotate idly. Similarly, (such as Figure 9-12 ) When opening the door to the right, the procedure is opposite to the above.

[0047] Example 3, based on Example 2: a top piece groove 353 is provided on the adjustment column 35, a top piece spring 354 is provided between the top piece 352 and the top piece groove 353, and the clutch plate is connected to the corresponding arc-shaped side surface of the handle shaft 3. (As shown Figure 2-4 , 13-15, 24 -26) The top piece of the present invention can be a steel ball 352, and a top piece groove for loading the steel ball 352 is provided on the adjustment column. The other end of the top piece spring is accommodated in the top piece groove, and the surface of the handle shaft 3 for the steel ball 352 to slide over is smooth. When adjusting the direction of the adjustment column, the steel ball 352 on the adjustment column is pressed into the top piece groove. The steel ball 352 slides on the corresponding surface on the handle shaft 3 to the inner surface of the clutch plate 31. The steel ball 352 can slide on the side of the handle shaft (the sliding here can be static friction sliding or dynamic friction rolling).

[0048] Example 4, based on Example 2 or 3: ( Figure 13 ) also includes a handle, a handle reversing screw (36), and a handle reset torsion spring, wherein the bottom of the handle reversing screw (36) is used to block the protruding end of the handle reset torsion spring, and the other protruding end of the handle reset torsion spring is arranged on the panel. (As shown Figure 5-12 This embodiment allows the handle shaft 3 to be reoriented according to whether the door opens left or right without removing the handle 5. Specifically, unscrewing the handle reversing screw 36 disengages the screw from the protruding end of the handle return torsion spring, freeing it from obstruction. The handle shaft 3, connected to the handle 5, now rotates to the corresponding orientation. Tightening the handle reversing screw 36 and adjusting the adjustment column 35 as needed allows the door to open left or right.

[0049] Example 5, based on Example 2 or 3: (as Figure 13) also includes a handle, which is threadedly connected to the lower center of the handle shaft 3. This embodiment (such as Figure 16-23 ) Directly loosen the screw connecting the handle to the lower center of the handle shaft 3, and reinstall the adjusted handle 5 on the handle shaft (3). Therefore, this adjustment method does not involve the handle reset torsion spring 6. After completing the above steps, adjust the adjustment column 35 to adapt to the two conditions of left-opening and right-opening doors. Examples 4 and 5 are applicable to two application scenarios.

[0050] Example 6, based on any one of Examples 1-5: ( Figure 26 The bottom of the rotor 2 is equipped with a motor unlocking slot 22 for engaging the clutch pin. After identity verification, the smart lock activates the motor to insert the clutch pin into the motor unlocking slot 22 at the bottom of the rotor 2. At this point, the handle 5, the handle shaft 3, and the lock body unlocking rod 1 are linked. Turning the handle 5 causes the unlocking rod 1 on the lock body to rotate left or right.

[0051] Example 7, based on any one of Examples 1-6: (as Figure 1 , Figure 2 , Figure 13 ) also includes a cover plate 7 fixedly connected to the handle shaft 3. The cover plate 7 has corresponding mounting locations for the clutch plate 31 or the rotating shaft of the adjustment column 35. As shown in the figure, the cover plate 7 has mounting holes for the clutch plate 31 and the rotating shaft of the adjustment column 35, which are used to install one end of the clutch plate or the rotating shaft of the adjustment column.

Claims

1. A smart lock clutch structure that can prevent violent twisting, comprising a handle shaft (3) and a rotor (2), wherein the handle shaft (3) is provided with a rotor slot (23) for mounting the rotor (2), and is characterized in that: A clutch plate groove (38) is provided on one side of the handle shaft (3), and a clutch plate (31) and a clutch plate spring (32) are provided in the clutch plate groove (38). The outer end of the clutch plate (31) is rotatably arranged in the clutch plate groove (38), and the clutch plate groove (38) has a space for the clutch plate (31) to rotate. The clutch plate (31) is located on the outer side of the rotor (2). The clutch plate spring (32) acts on the clutch plate (31) and causes the inner end of the clutch plate (31) to turn toward the rotor (2); a boss (21) is provided on the side of the rotor (2), and the inner end of the clutch plate (31) can act on the rotor (2). The handle shaft (3) is symmetrically provided with a clutch plate groove (38), a clutch plate (31) matched with the boss (21), and a clutch plate spring (32) connected to the clutch plate, an adjusting column (35) is installed between the clutch plates (31), and a top piece (352) is provided on the adjusting column (35), and the top piece (352) is used to push open the clutch plate (31); the adjusting column (35) is provided with a top piece groove (353), and a top piece spring (354) is provided between the top piece (352) and the top piece groove (353), and the clutch plate is connected to the corresponding arc-shaped side surface of the handle shaft (3).

2. The intelligent lock clutch structure capable of preventing violent twisting according to claim 1, characterized in that: It also includes a handle (5), a handle reversing screw (36), and a handle reset torsion spring. The bottom of the handle reversing screw (36) is used to block one protruding end of the handle reset torsion spring, and the other protruding end of the handle reset torsion spring is arranged on the panel.

3. The intelligent lock clutch structure capable of preventing violent twisting according to claim 1, characterized in that: It also includes a handle (5), which is threadedly connected to the center of the lower part of the handle shaft (3).

4. The intelligent lock clutch structure capable of preventing violent twisting according to claim 1, characterized in that: The bottom of the rotor (2) is provided with a motor unlocking slot (22) for cooperating with the clutch pin (9).

5. The intelligent lock clutch structure capable of preventing violent twisting according to claim 2, characterized in that: The bottom of the rotor (2) is provided with a motor unlocking slot (22) for cooperating with a clutch pin (9), and the clutch pin (9) is in transmission connection with the motor.

6. The intelligent lock clutch structure capable of preventing violent twisting according to claim 1, characterized in that: It also includes a cover plate (7) fixedly connected to the handle shaft (3).

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