Intelligent lock reversing clutch

Abstract

The utility model relates to the technical field of intelligent locks, and particularly discloses an intelligent lock reversing clutch which comprises a handle shaft, a reversing plate, a clutch knob and a reversing knob which are coaxially arranged, and the handle shaft is matched with convex teeth of an inner ring of the reversing plate through an open groove of the handle shaft to achieve synchronous rotation. Two notches are formed in the periphery of the reversing plate, and the clutch knob is selectively matched with the notches through reversing screws in the axial screw holes so as to switch synchronous forward rotation or reverse rotation; a movable clutch pin is arranged in a radial through hole of the clutch knob; when the clutch pin extends into a radial notch of the reversing knob, clutch connection is realized; the shell and the cover plate form a containing cavity, the clutch knob is arranged in the containing cavity, and an open hole is formed in the side wall of the shell to adjust the screwing-in depth of the reversing screw. The reversing screw is matched with the reversing plate to achieve bidirectional driving, the torsional spring and the reset spring are combined to ensure reset reliability, the structure is compact, reversing is flexible, the forward and reverse unlocking requirements of the intelligent lock are met, and the reversing mechanism has the advantages of being simple in structure, easy to install, convenient and fast to operate and high in adaptability.

Description

Technical Field

[0001] This utility model relates to the field of smart lock technology, and specifically to the clutch of a smart lock. Background Technology

[0002] As a crucial device in modern security, the performance of the clutch structure, a core component of smart locks, directly impacts the reliability of the lock body and the user experience. Traditional smart lock clutches mostly employ mechanical transmission structures to switch between locking and unlocking. However, existing technologies still suffer from the following shortcomings: 1. Limited reversing function: Most clutches only support unidirectional drive (e.g., forward unlocking), failing to adapt to scenarios requiring bidirectional operation (e.g., left / right opening). Users must disassemble the lock body or replace components to adjust the direction, resulting in cumbersome operation and poor compatibility. 2. Complex and redundant structure: To achieve reversing, traditional solutions often rely on multiple independent transmission components (e.g., gear sets, paddles), leading to a bulky overall structure, increased assembly difficulty, and higher failure risks. 3. Reversing adjustment requires disassembling the outer casing or using specialized tools, making it difficult for ordinary users to operate independently and resulting in high maintenance costs.

[0003] In summary, to address the aforementioned issues, it is necessary for engineers to develop a compact, flexible, and reliable intelligent lock clutch to simplify the assembly process, improve adaptability, and lower the maintenance threshold. Utility Model Content

[0004] To solve the above technical problems, this utility model provides an intelligent lock reversing clutch that meets the requirements of forward and reverse unlocking, has a simple structure, is easy to install, is convenient to operate, and has strong adaptability.

[0005] The technical solution of this utility model is achieved through the following means:

[0006] This utility model discloses an intelligent lock reversing clutch, including: a handle shaft, a reversing plate, a clutch knob, and a reversing knob arranged coaxially.

[0007] One end of the handle shaft has a symmetrical opening groove along its axis, and the other end is used to connect to the door handle.

[0008] The reversing plate has radially symmetrically extended convex teeth on its inner ring. The convex teeth are engaged with the opening slot to achieve synchronous rotation of the reversing plate and the handle shaft. The outer periphery of the reversing plate has two notches corresponding to the convex teeth.

[0009] One end of the clutch knob is provided with an axial screw hole, in which a reversing screw is provided, and the end of the reversing screw is selectively engaged with the notch; the other end of the clutch knob is provided with a radial through hole, in which a movable clutch pin is provided.

[0010] The reversing knob is rotatably configured relative to the clutch knob, with a radial groove at one end and the other end used to connect to the lock cylinder.

[0011] When the far end of the clutch pin extends into the radial slot, the reversing knob (4) is engaged with the clutch knob; by the reversing screw cooperating with different notches on the reversing plate, the handle shaft, reversing plate, clutch knob and reversing knob can be rotated synchronously in the forward or reverse direction.

[0012] Preferably, it further includes: a housing and a cover plate, the cover plate covering the housing to form a receiving cavity, and the clutch knob located within the receiving cavity. The housing and the cover plate are respectively provided with through holes coaxially; one end of the handle shaft with an open slot passes through the through hole of the cover plate and extends into the receiving cavity, and one end of the reversing knob with a radial slot passes through the through hole of the housing and extends into the receiving cavity.

[0013] Preferably, it also includes a torsion spring disposed between the reversing plate and the clutch knob, for driving the handle shaft and the reversing plate to reset after rotation.

[0014] Preferably, it further includes a return spring, sleeved on the clutch pin, for driving the clutch pin to return to its original position when the clutch knob and the reversing knob are separated.

[0015] Preferably, a motor assembly is provided for driving the clutch pin to move within the radial through-hole of the clutch knob.

[0016] Preferably, an opening is provided on the side wall of the housing corresponding to the axial screw hole position of the clutch knob. The opening is aligned with the screwing end of the reversing screw. A tool is inserted through the opening to screw the reversing screw, thereby adjusting the screwing depth of the reversing screw and realizing its engagement or disengagement with different notches on the reversing plate.

[0017] Preferably, the engagement of the reversing screw and the notch includes: when the reversing screw engages with the first notch, the handle shaft drives each component to rotate synchronously in the forward direction; when the reversing screw engages with the second notch, the handle shaft drives each component to rotate synchronously in the reverse direction.

[0018] The intelligent lock reversing clutch of this invention significantly improves the performance and user experience of the intelligent lock through structural optimization and functional integration. The specific technical effects are as follows:

[0019] 1. Features a two-way reversing function with strong adaptability. Through the interaction of the reversing screw and different notches on the reversing plate, the handle shaft drives all components to rotate synchronously in either the forward or reverse direction. Users can flexibly switch the opening direction (e.g., left / right opening) without disassembling the lock body or replacing parts, adapting to various door types and significantly improving product compatibility.

[0020] 2. The structure is compact and the assembly is simplified. All components (handle shaft, reversing plate, clutch knob, and reversing knob) adopt a coaxial integrated design. Combined with the cavity formed by the housing and cover plate, it eliminates the complex gear set or redundant transmission parts in the traditional clutch, reducing the assembly difficulty and volume, and is suitable for the miniaturization requirements of smart locks.

[0021] 3. Easy to adjust and low maintenance cost: The side wall of the housing has an opening that aligns with the reversing screw. Users can directly adjust the screw depth by turning the screw with a tool to quickly complete the reversing mode switching or maintenance without disassembling the housing, which greatly reduces the operation threshold and maintenance cost.

[0022] This invention solves the problems of single-directional clutch, redundant structure, and unreliable reset in traditional smart locks by using an innovative clutch transmission mechanism, spring reset design, and modular structure. It combines flexibility, reliability, and ease of use, and is suitable for high-end lock needs in fields such as smart homes and security. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is one of the exploded structural diagrams of the intelligent lock reversing clutch according to an embodiment of this utility model;

[0025] Figure 2 This is the second exploded structural diagram of the intelligent lock reversing clutch according to an embodiment of this utility model;

[0026] Figure 3 This is a cross-sectional view of the intelligent lock reversing clutch according to an embodiment of the present invention;

[0027] Figure 4 This is a schematic diagram of the structure of the intelligent lock reversing clutch according to an embodiment of the present invention;

[0028] Figure 5 This is a schematic diagram of the intelligent lock reversing clutch from another perspective of an embodiment of this utility model;

[0029] Figure 6 This is a schematic diagram of the clutch knob and return spring of the intelligent lock reversing clutch according to an embodiment of this utility model;

[0030] Figure 7 This is a schematic diagram of the reversing plate structure of the intelligent lock reversing clutch according to an embodiment of this utility model.

[0031] Reference numerals: 1. Handle shaft; 11. Opening slot; 2. Reversing plate; 21. Protrusion; 22. Notch; 22. First notch 22a; 22. Second notch 22b; 3. Clutch knob; 31. Axial screw hole; 32. Reversing screw; 33. Radial through hole; 34. Clutch pin; 4. Reversing knob; 41. Radial slot; 5. Housing; 51. Through hole; 52. Opening; 6. Cover plate; 61. Through hole; 7. Torsion spring; 8. Return spring; 9. Motor assembly. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 The intelligent lock reversing clutch of this utility model includes: a handle shaft 1, a reversing plate 2, a clutch knob 3, and a reversing knob 4, which are coaxially arranged.

[0034] The handle shaft 1 has a symmetrical slot 11 at one end along its axis, and the other end is used to connect to the door handle. The inner ring of the reversing plate 2 has radially symmetrically extending teeth 21, which mesh with the slots 11 on the handle shaft 1 to achieve synchronous rotation of the reversing plate 2 and the handle shaft 1. The outer circumference of the reversing plate 2 has two notches 22 corresponding to the teeth 21. One end of the clutch knob 3 has an axial screw hole 31 along the rotation axis, in which a reversing screw 32 is installed. The reversing screw 32 and the axial screw hole 31 form a screw pair, and the end of the reversing screw 32 selectively engages with the two notches 22 on the reversing plate 2. The other end of the clutch knob 3 has a radial through hole 33, in which a movable clutch pin 34 is installed. The reversing knob 4 is rotatable relative to the clutch knob 3, with a radial slot 41 at one end and the other end used to connect to the lock cylinder.

[0035] When the distal end of the clutch pin 34 extends into the radial slot 41, the reversing knob 4 and the clutch knob 3 are engaged and disengaged. By engaging the reversing screw 32 with different notches 22 on the reversing plate 2, the handle shaft 1, the reversing plate 2, the clutch knob 3 and the reversing knob 4 can be rotated synchronously in the forward or reverse direction, thus completing the reversing of the handle shaft.

[0036] The housing 5 and the cover plate 6 are fitted onto the housing 5 to form a receiving cavity, and the clutch knob 3 is located in the receiving cavity; the housing 5 and the cover plate 6 are respectively provided with through holes (51, 61) on the same axis; one end of the handle shaft 1 with an opening groove 11 passes through the through hole 61 of the cover plate 6 and extends into the receiving cavity, and one end of the reversing knob 4 with a radial groove 41 passes through the through hole 51 of the housing 5 and extends into the receiving cavity.

[0037] A torsion spring 7 is disposed between the reversing plate 2 and the clutch knob 3, and is used to drive the handle shaft 1 and the reversing plate 2 to reset after rotation. A return spring 8 is sleeved on the clutch pin 34, and is used to drive the clutch pin 34 to reset when the clutch knob 3 and the reversing knob 4 are separated. A motor assembly 9 is used to drive the clutch pin 34 to move in the radial through hole 33 of the clutch knob 3. The structure of the motor assembly 9 is prior art and will not be described in detail here.

[0038] An opening 52 is provided on the side wall of the housing 5 at the position of the axial screw hole 31 of the clutch knob 3. The opening 52 is aligned with the screwing end of the reversing screw 32. A tool (such as a screwdriver) is inserted through the opening 52 to screw the reversing screw 32, thereby adjusting the screwing depth of the reversing screw 32 and realizing its engagement or disengagement with different notches 22 on the reversing plate 2.

[0039] like Figure 6 and Figure 7 As shown, the engagement of the reversing screw 32 and the notch 22 includes: when the reversing screw 32 engages with the first notch 22a, the handle shaft 1 drives each component to rotate synchronously in the forward direction; when the reversing screw 32 engages with the second notch 22b, the handle shaft 1 drives each component to rotate synchronously in the reverse direction.

[0040] The working principle of this embodiment:

[0041] Initial state: The reversing screw is screwed into a notch (22a or 22b) of the reversing plate, fixing the clutch knob to the reversing plate. At this time, the handle shaft engages with the protrusion of the reversing plate through the slot, forming a synchronous rotation relationship.

[0042] Forward drive: When the reversing screw engages with the first notch (22a), rotating the handle shaft drives the reversing plate, clutch knob and reversing knob to rotate synchronously in the forward direction, driving the lock cylinder to perform the unlocking action (such as clockwise unlocking).

[0043] Reverse drive: When the reversing screw is switched to engage with the second notch (22b), the rotation direction of the handle shaft is shifted through the notch position of the reversing plate and transmitted in the opposite direction to the clutch knob and the reversing knob, thereby realizing the reverse drive of the lock cylinder (such as counterclockwise unlocking).

[0044] Clutch connection: When the lock cylinder needs to be driven, the clutch pin, under the push of the return spring or motor assembly, extends its distal end into the radial slot of the reversing knob, so that the reversing knob and the clutch knob form a rigid connection and transmit rotational power.

[0045] Clutch disengagement: When the lock cylinder is in the locked state or the power transmission needs to be disconnected, the clutch pin is pulled back by external force (such as reverse drive of the motor) or manual operation, and disengages from the radial groove. At this time, the reversing knob and the clutch knob are disconnected, and the door handle rotates freely to avoid accidental operation of the lock cylinder.

[0046] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An intelligent lock reversing clutch, characterized in that, include: The handle shaft (1), reversing plate (2), clutch knob (3), and reversing knob (4) are coaxially arranged. One end of the handle shaft (1) is provided with a symmetrical opening groove (11) along its axis, and the other end is used to connect to the door handle; The inner ring of the reversing plate (2) is radially symmetrically extended with protruding teeth (21). The protruding teeth (21) are connected with the opening groove (11) to realize the synchronous rotation of the reversing plate (2) and the handle shaft (1). The outer periphery of the reversing plate (2) is provided with two notches (22) corresponding to the protruding teeth (21). One end of the clutch knob (3) is provided with an axial screw hole (31), and a reversing screw (32) is provided in the axial screw hole (31). The end of the reversing screw (32) is selectively connected to the notch (22). The other end of the clutch knob (3) is provided with a radial through hole (33), and a movable clutch pin (34) is provided in the radial through hole (33). The reversing knob (4) is rotatably configured relative to the clutch knob (3), with a radial groove (41) at one end and the other end used to connect to the lock cylinder; When the distal end of the clutch pin (34) extends into the radial slot (41), the reversing knob (4) is engaged with the clutch knob (3); By engaging the reversing screw (32) with different notches (22) on the reversing plate (2), the handle shaft (1), reversing plate (2), clutch knob (3) and reversing knob (4) can be rotated synchronously in the forward or reverse direction.

2. The smart lock reversing clutch of claim 1, wherein, Also includes: The housing (5) and the cover plate (6) are fitted onto the housing (5) to form a receiving cavity, and the clutch knob (3) is located in the receiving cavity; The housing (5) and the cover plate (6) are respectively provided with through holes (51, 61) on the same axis; the handle shaft (1) has an open groove (11) at one end, which passes through the through hole (61) of the cover plate (6) and extends into the receiving cavity; the reversing knob (4) has a radial groove (41) at one end, which passes through the through hole (51) of the housing (5) and extends into the receiving cavity.

3. The intelligent lock reversing clutch of claim 1, wherein, Also includes: A torsion spring (7) is disposed between the reversing plate (2) and the clutch knob (3) to drive the handle shaft (1) and the reversing plate (2) to reset after rotation.

4. The smart lock reversing clutch of claim 1, wherein, Also includes: A return spring (8) is sleeved on the clutch pin (34) and is used to drive the clutch pin (34) to return when the clutch knob (3) and the reversing knob (4) are separated.

5. The smart lock reversing clutch of claim 4, wherein, Also includes: The motor assembly (9) is used to drive the clutch pin (34) to move in the radial through hole (33) of the clutch knob (3).

6. The intelligent lock reversing clutch as described in claim 2, characterized in that: An opening (52) is provided on the side wall of the housing (5) corresponding to the axial screw hole (31) of the clutch knob (3). The opening (52) is aligned with the screwing end of the reversing screw (32). A tool is inserted through the opening (52) to screw the reversing screw (32), thereby adjusting the screwing depth of the reversing screw (32) and realizing its connection or separation with different notches (22) on the reversing plate (2).

7. The smart lock reversing clutch of claim 6, wherein, The engagement between the reversing screw (32) and the notch (22) includes: When the reversing screw (32) engages with the first notch (22a), the handle shaft (1) drives each component to rotate synchronously in the forward direction; When the reversing screw (32) engages with the second notch (22b), the handle shaft (1) drives each component to rotate synchronously in the opposite direction.

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