An indoor lever handle opening and closing mechanism for an electromechanical integrated smart lock
By designing a clutch and differential drive assembly, the problem of unsmooth indoor handle operation in existing smart locks has been solved, enabling fast, stable, and safe opening and closing operations.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 郭保宣
- Filing Date
- 2025-06-25
- Publication Date
- 2026-06-30
AI Technical Summary
The existing mechatronic smart locks have complex indoor handle structures, resulting in unsmooth operation, slow response speed, and low flexibility and stability, which affects the versatility and user experience of the locks.
The design employs a clutch and differential drive assembly, including an inner fork, an upper fork, and a lower fork. Combined with the upper and lower half-wheels of the irregularly shaped semi-tooth plate structure, the differential drive assembly, motor reduction gearbox, and lock cylinder rotating gears work together to achieve rapid opening and closing of the lock.
It improves the fit and stability of the internal structure of the lock, enabling the lock to open and close quickly and smoothly, thus enhancing the user experience and security.
Smart Images
Figure CN224432223U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of smart lock technology, and in particular to an indoor lever handle opening and closing mechanism for an electromechanical integrated smart lock. Background Technology
[0002] In the mechatronics smart lock industry, the rotation of the interior handle is the most direct component for opening and closing the interior door. The interior handle is directly connected to the clutch, and the clutch is connected to the transmission component to drive the large slide plate to achieve the continuous movement of the main bolt, latch bolt, and top and bottom levers. Because smart locks contain electronic structures such as motor reduction gearboxes and lock cylinder rotating gears that work with electronic keys, the transmission connection between the mechanical and electronic parts is complex and requires high precision to ensure smooth use of the lock. However, the complex structure makes the opening and closing of the interior handle of existing smart locks complicated, with slow internal response speed, low flexibility and stability. Moreover, if the structure is not reasonable, it will also directly affect the compatibility of other opening and closing components inside the lock, resulting in poor versatility and causing the door to open and close unevenly, directly affecting its use. Summary of the Invention
[0003] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide an indoor lever handle opening and closing mechanism for an electromechanical integrated smart lock, which has a reasonable and standardized structure, is easy to use, and has high security.
[0004] The technical solution adopted in this utility model is:
[0005] An indoor lever opening and closing mechanism for an electromechanical integrated smart lock includes a clutch, a differential drive assembly, a latch assembly, a main latch slide plate, and a pull rod. The clutch is located on the lower housing of the lock and between the latch assembly and the differential drive assembly. The differential drive assembly is located on the front side of the main latch slide plate and is connected to the main latch slide plate in a transmission manner. The pull rod is located on the rear side of the main latch slide plate and its end is slidably engaged with the clutch.
[0006] The clutch includes an inner fork, an upper shift fork, and a lower shift fork. The inner fork is a hollow variable-diameter shaft structure with a limiting ring on its outer edge. The center of the inner fork is set with a square hole that matches the handle square rod. An upper convex arm, a lower convex arm, a drive arm, and a boss are respectively set on the outer edge of the inner fork. The upper convex arm and the lower convex arm cooperate with the pull rod to drive the pull rod. The drive arm cooperates with the differential drive assembly. The upper shift fork and the lower shift fork are rotatably set on the outer edges of the inner fork at both ends through the center hole and cooperate with the upper boss of the inner fork. The upper part of the upper shift fork and the lower shift fork are respectively set with rotating arms that cooperate with the inclined tongue assembly. The outer edge of the upper shift fork opposite to the rotating arm is also set with a shift tooth.
[0007] The differential drive assembly includes an upper half-wheel, a lower half-wheel, a center pin, an upper return torsion spring, and a lower return torsion spring. Both the upper and lower half-wheels are irregularly shaped semi-tooth plate structures. The upper half-wheel is provided with a U-shaped actuation groove that engages with the actuation teeth of the clutch upper shift fork. The lower half-wheel is provided with an actuation arm that engages with the single upper drive arm inside the clutch. The lower half-wheel is provided with a moving pin and a fixed pin respectively. The center pin passes through the upper and lower half-wheels, stacking the upper and lower half-wheels on the front side of the main locking tongue large slide plate. The upper return torsion spring is located between the upper and lower half-wheels, and the lower return torsion spring is located between the main locking tongue large slide plate and the lower half-wheel.
[0008] The latch assembly includes a latch, a moving rod, a spring, and a sliding end plate. The moving rod is slidably disposed in the mounting groove of the lock's rear housing. The latch and the sliding end plate are respectively disposed at both ends of the moving rod. The spring is disposed on the outer edge of the moving rod between the mounting groove and the rear end of the latch. The rear side of the sliding end plate is slidably disposed in the limiting groove of the lock's rear housing. The rotating arms of the upper and lower shift forks are respectively located on the front and rear sides of the moving rod and are correspondingly disposed with respect to the sliding end plate. The rotating arms of the upper and lower shift forks are used to move the sliding end plate to drive the latch to extend and retract.
[0009] A fixing pin is provided on the main locking tongue slide plate. The pull rod is located on the rear side of the main locking tongue slide plate. The pull rod has a sickle-shaped structure. A pin is provided at the upper corner of the pull rod. The two ends of the torsion spring are respectively fixed to the upper pin of the pull rod and the front end of the fixing pin on the main locking tongue slide plate. An elliptical slide is provided at the lower end of the pull rod. The elliptical slide is located on the top and bottom rod connecting pins on the main locking tongue slide plate.
[0010] Specifically, the internal structure of the clutch is as follows: the upper and lower convex arms of the drive lever are respectively provided on the outer edge of the limiting ring near the rear end, and the drive arm that cooperates with the differential drive assembly is provided on the outer edge near the front side; the limiting ring has bosses symmetrically provided on both sides along the outer edge of the inner single axis.
[0011] More specifically, the central holes of the upper and lower shift forks include a central circular hole and a fan-shaped groove that extends symmetrically outward from the outer edge of the circular hole and matches the inner single upper boss. A copper sleeve A is provided between the upper shift fork and the lock housing.
[0012] Specifically, the outer edge of the upper half-wheel includes an arc-shaped gear segment and a circular arc segment. The gear segment meshes with the lock cylinder rotating gear and the drive gear on the motor reducer inside the lock body, respectively. A U-shaped actuating groove is provided on the outer edge of the circular arc segment. The U-shaped actuating groove includes a single tooth and a half tooth, and the U-shaped actuating groove cooperates with the actuating teeth of the clutch upper fork. A stepped groove matching the shape is provided on the front side of the upper half-wheel. The stepped groove is provided with a protruding shaft hole, an arc-shaped sliding groove, and a limiting groove. The lower half-wheel has a flat plate structure. An arc-shaped gear segment is also provided on the outer edge of the lower half-wheel. The gear segment of the lower half-wheel meshes with the drive gear on the motor reducer inside the lock body, and cooperates with the teeth. A lever arm is protruding from the outer edge of the corresponding end of the wheel segment, which cooperates with the single upper drive arm inside the clutch. The outer end of the lever arm is a raised arc shape. The rear end of the moving pin on the lower half wheel is located in the vertical slide groove of the main lock tongue slide plate. The front end of the moving pin does not protrude from the front side of the lower half wheel. The front end of the fixed pin is located in the arc-shaped slide groove of the upper half wheel. The rear end of the fixed pin does not protrude from the rear side of the lower half wheel. The lower half wheel is provided with a hole corresponding to the upper shaft hole of the upper half wheel. The front end of the center pin is set in the shaft hole of the upper half wheel through a bearing. The rear end passes through the corresponding hole on the lower half wheel and the horizontal long slide groove on the main lock tongue slide plate through a bushing and is fixed to the rear housing of the lock.
[0013] More specifically, the upper reset torsion spring is set on the outer edge of the shaft hole of the upper half wheel through a copper sleeve B. One end of the upper reset torsion spring is abutted in the limiting groove on the upper half wheel, and the other end is connected to the fixed pin of the lower half wheel. The lower reset torsion spring is set on the rear side of the main lock tongue slide plate through a pin. One end of the lower reset torsion spring is hooked on the lower side of the main lock tongue slide plate, and the other end is fixed to the rear end of the moving pin of the lower half wheel.
[0014] Specifically, the upper and lower sides of the upper end of the pull rod are set at an angle, with a rounded transition at the apex. The upper side is the locking force point and cooperates with the upper convex arm inside the clutch, while the lower side is the unlocking force point and cooperates with the lower convex arm.
[0015] Due to the adoption of the technical solution described above, this utility model has the following advantages:
[0016] The structure of the clutch and differential drive assembly of this utility model makes the overall internal structure of the lock highly compatible and stable. When the handle is operated indoors, it can quickly link with the drive gear on the motor reducer and the lock cylinder rotation gear, which involve electronic parts, so that the locking and unlocking are quick and smooth and easy to use. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the indoor handle of this utility model in the state of lifting and locking.
[0018] Figure 2 This is a schematic diagram of the indoor handle pressing down to unlock the lock according to this utility model.
[0019] Figure 3 This is a schematic diagram of the differential drive assembly, the pull rod, and the main locking tongue large slide plate of this utility model.
[0020] Figure 4 yes Figure 3 A diagram from the other direction.
[0021] Figure 5 This is a partial schematic diagram of the connection between the clutch, lever, and tongue assembly of this utility model and the large slide plate.
[0022] Figure 6 This is an exploded schematic diagram of the clutch of this utility model.
[0023] Figure 7 This is an exploded view of the differential drive assembly of this utility model.
[0024] Figure 8 This is a schematic diagram of the pull rod of this utility model.
[0025] In the diagram: 1-Clutch, 11-Inner lever, 111-Upper convex arm, 112-Lower convex arm, 113-Drive arm, 114-Boss, 12-Upper shift fork, 121-Rotating arm, 122-Shift tooth, 123-Copper sleeve A, 13-Lower shift fork, 2-Differential drive assembly, 21-Upper half wheel, 211-U-shaped shift groove, 212-Shaft hole, 213-Arc-shaped slide groove, 214-Limit groove, 22-Lower half wheel, 221-Shift arm, 222-Moving pin, 223-Fixed pin. 23-Center pin, 24-Upper return torsion spring, 241-Copper sleeve B, 25-Lower return torsion spring, 3-Slanted tongue assembly, 31-Slanted tongue, 32-Moving rod, 33-Spring, 34-Sliding end plate, 4-Main lock tongue large slide plate, 41-Fixing pin, 42-Horizontal slide groove, 43-Vertical slide groove, 5-Pull rod, 51-Elliptical slide, 52-Torsion spring, 6-Indoor handle, 7-Drive gear of motor reducer, 8-Lock cylinder rotating gear, 9-Top and bottom rods, 10-Top and bottom rod connecting pin. Detailed Implementation
[0026] The present invention will be further explained below with reference to the accompanying drawings and embodiments. However, this explanation should not be construed as limiting the scope of protection of the present invention. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention.
[0027] Combined with appendix Figure 1-8The illustrated electromechanical integrated smart lock indoor handle opening and closing mechanism includes a clutch 1, a differential drive assembly 2, a latch assembly 3, a main latch slide plate 4, and a pull rod 5. The clutch 1 is mounted on the lower housing of the lock and is positioned between the latch assembly 3 and the differential drive assembly 2. The differential drive assembly 2 is located on the front side of the main latch slide plate 4 and is connected to the main latch slide plate 4 in a transmission manner. The pull rod 5 is located on the rear side of the main latch slide plate 4, and the end of the pull rod 5 is slidably engaged with the clutch 1.
[0028] Clutch 1 includes an inner fork 11, an upper shift fork 12, and a lower shift fork 13. The inner fork 11 is a hollow variable-diameter shaft structure with a limiting ring on its outer edge. The center of the inner fork 11 is set with a square hole that matches the handle square rod. An upper convex arm 111 and a lower convex arm 112 are respectively provided on the outer edge near the rear end of the limiting ring, and a drive arm 113 is provided on the outer edge near the front. Bosses 114 are symmetrically provided at both ends of the limiting ring along the axial outer edge of the inner fork 11. The upper convex arm 111 and the lower convex arm 112 cooperate with the pull rod 5 to drive the pull rod 5; the drive arm 113 and the differential... The speed drive assembly 2 is engaged; the center holes of the upper shift fork 12 and the lower shift fork 13 include a circular hole and a fan-shaped groove that extends symmetrically outward from the outer edge of the circular hole and engages with the upper boss 114 of the inner single 11. The upper shift fork 12 and the lower shift fork 13 are respectively rotatably mounted on the outer edges of both ends of the inner single 11 through the center holes. The upper shift fork 12 and the lower shift fork 13 are respectively provided with rotating arms 121 that engage with the tongue assembly 3. The outer edge of the upper shift fork 12 opposite to the rotating arm 121 is also provided with a shift tooth 122. A copper sleeve A123 is provided between the upper shift fork 12 and the lock housing.
[0029] The differential drive assembly 2 includes an upper half wheel 21, a lower half wheel 22, a center pin 23, an upper return torsion spring 24, and a lower return torsion spring 25. Both the upper half wheel 21 and the lower half wheel 22 are irregularly shaped semi-tooth plate structures. The outer edge of the upper half wheel 21 includes an arc-shaped gear segment and a circular arc segment. The gear segment meshes with the lock cylinder rotating gear 8 and the drive gear 7 on the motor reduction gearbox inside the lock body, respectively. A U-shaped actuating groove 211 is provided on the outer edge of the circular arc segment. The U-shaped actuating groove 211 includes a single tooth and a half tooth. The U-shaped actuating groove 211 cooperates with the actuating tooth 122 of the upper fork 12 of the clutch 1. A stepped groove matching the shape is provided on the front side of the upper half wheel 21. The stepped groove is provided with a protruding shaft hole 212, an arc-shaped sliding groove 213, and a limiting groove 214.
[0030] The lower half-wheel 22 has a flat plate structure, and an arc-shaped gear section is also provided on the outer edge of the lower half-wheel 22. The gear section of the lower half-wheel 22 meshes with the drive gear 7 on the motor reduction gearbox inside the lock body. On the outer edge corresponding to the gear section, a lever arm 221 is provided to cooperate with the drive arm 113 on the single 11 inside the clutch 1. The outer end of the lever arm 221 is a raised arc shape. The lower half-wheel 22 is provided with a moving pin 222 and a fixed pin 223 respectively. The rear end of the moving pin 222 on the lower half-wheel 22 is located in the vertical slide groove 43 of the main lock tongue large slide plate 4, and the front end of the moving pin 222 does not protrude. On the front side of the lower half wheel 22, the front end of the fixing pin 223 is located in the arc-shaped slide groove 213 of the upper half wheel 21, and the rear end of the fixing pin 223 does not protrude from the rear side of the lower half wheel 22; the lower half wheel 22 is provided with a hole corresponding to the shaft hole 212 on the upper half wheel 21; the front end of the center pin 23 is set in the shaft hole 212 of the upper half wheel 21 through a bearing, and the rear end passes through the corresponding hole on the lower half wheel 22 and the horizontal slide groove 42 on the main lock tongue slide plate 4 through a bushing and is then fixed to the rear housing of the lock; the center pin 23 stacks the upper half wheel 21 and the lower half wheel 22 on the front side of the main lock tongue slide plate 4.
[0031] The upper return torsion spring 24 is disposed between the upper half wheel 21 and the lower half wheel 22, and the lower return torsion spring 25 is disposed between the main lock tongue large slide plate 4 and the lower half wheel 22. The upper return torsion spring 24 is disposed on the outer edge of the shaft hole 212 of the upper half wheel 21 through the copper sleeve B241. One end of the upper return torsion spring 24 is abutted in the limiting groove 214 on the upper half wheel 21, and the other end is connected to the fixing pin 223 of the lower half wheel 22. The lower return torsion spring 25 is disposed on the rear side of the main lock tongue large slide plate 4 through the pin shaft. One end of the lower return torsion spring 25 is hooked on the lower side of the main lock tongue large slide plate 4, and the other end is fixed on the rear end of the moving pin 222 of the lower half wheel 22.
[0032] The latch assembly 3 includes a latch 31, a moving rod 32, a spring 33, and a sliding end plate 34. The moving rod 32 is slidably disposed in the mounting groove of the lock's rear housing. The latch 31 and the sliding end plate 34 are respectively disposed on both ends of the moving rod 32. The spring 33 is disposed on the outer edge of the moving rod 32 between the mounting groove and the rear end of the latch 31. The rear side of the sliding end plate 34 is slidably disposed in the limiting groove of the lock's rear housing. The rotating arms 121 of the upper fork 12 and the lower fork 13 are respectively located on the front and rear sides of the moving rod 32 and are correspondingly disposed with respect to the sliding end plate 34. The rotating arms 121 of the upper fork 12 and the lower fork 13 are used to move the sliding end plate 34 to drive the latch 31 to extend and retract.
[0033] A fixing pin 41 is provided on the main locking tongue slide plate 4; the pull rod 5 is located on the rear side of the main locking tongue slide plate 4. The pull rod 5 has a sickle-shaped structure. The upper side and the lower side of the upper end of the pull rod 5 are set at an angle, and the vertex is rounded. The upper side is the locking force point and cooperates with the upper convex arm 111 of the clutch 1. The lower side is the unlocking force point and cooperates with the lower convex arm 112. A pin is provided at the upper corner of the pull rod 5. The two ends of the torsion spring 52 are respectively fixed to the upper pin of the pull rod 5 and the front end of the fixing pin 41 on the main locking tongue slide plate 4; an elliptical slide 51 is provided at the lower end of the pull rod 5. The elliptical slide 51 is set on the top and bottom rod connecting pins 10 on the main locking tongue slide plate 4. The top and bottom rods are slidably set on the front and rear sides of the main locking tongue slide plate 4 through bearings set on both ends of the top and bottom rod connecting pins 10.
[0034] In the normal closed position, the latch 31 is extended under the action of the spring 33, and the interior handle 6 is in a horizontal position. At this time, the upper half wheel 21 of the differential drive assembly 2 meshes with the lock cylinder rotating gear 8 and the drive gear 7 on the motor reduction gearbox, respectively. The half tooth on the upper half wheel 21 meshes with the shift tooth 122 on the upper shift fork 12. The lower side of the upper convex arm 111 of the clutch 1 rests against the locking force point on the upper side of the pull rod 5. When it is necessary to lock the main lock inside the room... When the latch and top and bottom lever 9 are fully engaged, lifting the interior handle 6 causes the clutch 1 to rotate in the direction of the latch extension. The boss 114 on the inner single 11 of the clutch 1 drives the rotating arm 121 on the upper shift fork 12 and the lower shift fork 13 to rotate away from the sliding end plate 34 of the inclined latch assembly 3. The shift tooth 122 of the upper shift fork 12 disengages from the U-shaped shift groove 211 on the upper half wheel 21. The interior handle 6 drives the upper protruding arm 111 to press the upper end of the pull rod 5 downward, and the lower end of the pull rod 5... The main locking tongue slide plate 4 is connected to the top and bottom rod connecting pins 10. Under the action of the torsion spring 52, the main locking tongue slide plate 4 pops out, causing the top and bottom rods 9, which are slidably set on the front and rear sides of the main locking tongue slide plate 4, to extend respectively, thus completing the locking. During the locking process, the far end of the horizontal slide groove 42 on the main locking tongue slide plate 4 moves to contact the center pin 23 of the differential drive assembly 2. At the same time, during the movement of the main locking tongue slide plate 4, the lower reset torsion spring 25 pulls the moving pin 222 on the lower half wheel 22 to move upward in the vertical slide groove 43 of the main locking tongue slide plate 4, thereby causing the upper half wheel 21 of the differential drive assembly 2 to disengage from the drive gear 7 on the motor reduction gearbox. The lower half wheel 22 rotates to mesh with the drive gear 7 on the motor reduction gearbox, and the actuating arm 221 on the lower half wheel 22 rotates to correspond to the drive arm 113 on the inner single 11 of the clutch 1. When the indoor handle 6 is released, under the action of the reset torsion spring on the lock panel, the indoor handle 6 returns to the horizontal position.
[0035] When unlocking is required, the boss 114 on the handle 6 in the lower chamber and the inner single 11 of the clutch 1 drives the rotating arm 121 on the upper shift fork 12 and the lower shift fork 13 to move closer to the sliding end plate 34, pushing the sliding end plate 34 along the limiting slide groove, pulling back the oblique tongue 31, compressing the spring 33, and rotating the inner single 11 of the clutch 1. At the same time, the upper side of the lower protruding arm 112 abuts against the unlocking force point on the lower side of the pull rod 5, pushing the pull rod 5 upward. Under the action of the torsion spring 52, the proximal end of the horizontal slide groove 42 on the main lock tongue large slide plate 4 moves. When the main locking tongue slide plate 4 contacts the center pin 23 of the differential drive assembly 2, it is pulled back. At the same time, under the action of the lower return torsion spring 25, the moving pin 222 of the lower half wheel 22 of the differential drive assembly 2 is pushed down in the vertical slide groove 43 of the main locking tongue slide plate 4. The lower half wheel 22 disengages from the drive gear 7 on the motor gearbox, and the upper half wheel 21 meshes with the drive gear 7 on the motor gearbox. At the same time as the main locking tongue slide plate 4 is pulled back, the top and bottom rods 9 on the front and rear sides of the main locking tongue slide plate 4 are also pulled back respectively, thus completing the unlocking.
[0036] The parts of this utility model not described in detail are existing technologies.
[0037] The embodiments selected herein for the purpose of disclosing the utility model are currently considered suitable; however, it should be understood that the present invention is intended to include all variations and modifications of the embodiments that fall within the scope of the present concept and utility model.
Claims
1. An indoor lever handle opening and closing mechanism for an electromechanical integrated smart lock, characterized in that: It includes a clutch, a differential drive assembly, a latch assembly, a main latch slide plate, and a pull rod; the clutch is located on the lower housing of the lock, between the latch assembly and the differential drive assembly, the differential drive assembly is located on the front side of the main latch slide plate and is connected to the main latch slide plate in a transmission manner, and the pull rod is located on the rear side of the main latch slide plate and its end is slidably engaged with the clutch. The clutch includes an inner fork, an upper shift fork, and a lower shift fork. The inner fork is a hollow variable-diameter shaft structure with a limiting ring on its outer edge. The center of the inner fork is set with a square hole that matches the handle square rod. An upper convex arm, a lower convex arm, a drive arm, and a boss are respectively set on the outer edge of the inner fork. The upper convex arm and the lower convex arm cooperate with the pull rod to drive the pull rod. The drive arm cooperates with the differential drive assembly. The upper shift fork and the lower shift fork are rotatably set on the outer edges of the inner fork at both ends through the center hole and cooperate with the upper boss of the inner fork. The upper part of the upper shift fork and the lower shift fork are respectively set with rotating arms that cooperate with the inclined tongue assembly. The outer edge of the upper shift fork opposite to the rotating arm is also set with a shift tooth. The differential drive assembly includes an upper half-wheel, a lower half-wheel, a center pin, an upper return torsion spring, and a lower return torsion spring. Both the upper and lower half-wheels are irregularly shaped semi-tooth plate structures. The upper half-wheel is provided with a U-shaped actuation groove that engages with the actuation teeth of the clutch upper shift fork. The lower half-wheel is provided with an actuation arm that engages with the single upper drive arm inside the clutch. The lower half-wheel is provided with a moving pin and a fixed pin respectively. The center pin passes through the upper and lower half-wheels, stacking the upper and lower half-wheels on the front side of the main locking tongue large slide plate. The upper return torsion spring is located between the upper and lower half-wheels, and the lower return torsion spring is located between the main locking tongue large slide plate and the lower half-wheel. The latch assembly includes a latch, a moving rod, a spring, and a sliding end plate. The moving rod is slidably disposed in the mounting groove of the lock's rear housing. The latch and the sliding end plate are respectively disposed at both ends of the moving rod. The spring is disposed on the outer edge of the moving rod between the mounting groove and the rear end of the latch. The rear side of the sliding end plate is slidably disposed in the limiting groove of the lock's rear housing. The rotating arms of the upper and lower shift forks are respectively located on the front and rear sides of the moving rod and are correspondingly disposed with respect to the sliding end plate. The rotating arms of the upper and lower shift forks are used to move the sliding end plate to drive the latch to extend and retract. A fixing pin is provided on the main locking tongue slide plate. The pull rod is located on the rear side of the main locking tongue slide plate. The pull rod has a sickle-shaped structure. A pin is provided at the upper corner of the pull rod. The two ends of the torsion spring are respectively fixed to the upper pin of the pull rod and the front end of the fixing pin on the main locking tongue slide plate. An elliptical slide is provided at the lower end of the pull rod. The elliptical slide is located on the top and bottom rod connecting pins on the main locking tongue slide plate.
2. The indoor lever handle opening and closing mechanism for the mechatronic smart lock according to claim 1, characterized in that: The internal structure of the clutch is as follows: the upper and lower convex arms of the drive lever are respectively provided on the outer edge of the limiting ring near the rear end, and the drive arm that cooperates with the differential drive assembly is provided on the outer edge near the front side; the two ends of the limiting ring are symmetrically provided with bosses along the outer edge of the inner single axis.
3. The indoor lever handle opening and closing mechanism for the mechatronic smart lock according to claim 2, characterized in that: The upper and lower shift forks have central holes including a central circular hole and a fan-shaped groove that extends symmetrically outward from the outer edge of the circular hole and matches the inner single upper boss. A copper sleeve A is provided between the upper shift fork and the lock housing.
4. The indoor lever opening and closing mechanism for the mechatronic smart lock according to claim 1, characterized in that: The outer edge of the upper half-wheel includes an arc-shaped gear segment and a circular arc segment. The gear segment meshes with the lock cylinder rotating gear and the drive gear on the motor reduction gearbox inside the lock body, respectively. A U-shaped actuating groove is provided on the outer edge of the circular arc segment. The U-shaped actuating groove includes a single tooth and a half tooth, and the U-shaped actuating groove cooperates with the actuating teeth of the clutch upper fork. A stepped groove matching the shape is provided on the front side of the upper half-wheel. The stepped groove is provided with a protruding shaft hole, an arc-shaped sliding groove, and a limiting groove. The lower half-wheel has a flat plate structure, and an arc-shaped section is also provided on the outer edge of the lower half-wheel. The gear segment, specifically the lower half-wheel gear segment, meshes with the drive gear on the motor reducer inside the lock body. A lever arm, corresponding to the outer edge of the gear segment, protrudes and engages with the single upper drive arm inside the clutch. The outer end of the lever arm forms a raised arc shape. The rear end of the moving pin on the lower half-wheel is located within the vertical groove of the main lock tongue slide plate, with the front end of the moving pin not protruding from the front side of the lower half-wheel. The front end of the fixed pin is located within the arc-shaped groove of the upper half-wheel, with the rear end of the fixed pin not protruding from the rear side of the lower half-wheel. The lower half-wheel has holes corresponding to the upper shaft holes of the upper half-wheel. The front end of the center pin is set in the shaft hole of the upper half wheel through a bearing, and the rear end is fixed to the rear housing of the lock after passing through the corresponding hole on the lower half wheel and the horizontal slide groove on the main lock tongue slide plate through a bushing.
5. The indoor lever handle opening and closing mechanism for the mechatronic smart lock according to claim 4, characterized in that: The upper reset torsion spring is set on the outer edge of the shaft hole of the upper half wheel through a copper sleeve B. One end of the upper reset torsion spring is set in the limiting groove on the upper half wheel, and the other end is connected to the fixed pin of the lower half wheel. The lower reset torsion spring is set on the rear side of the main lock tongue slide plate through a pin. One end of the lower reset torsion spring is hooked on the lower side of the main lock tongue slide plate, and the other end is fixed on the rear end of the moving pin of the lower half wheel.
6. The indoor lever handle opening and closing mechanism for the mechatronic smart lock according to claim 1, characterized in that: The upper and lower sides of the upper end of the pull rod are set at an angle, with a rounded transition at the apex. The upper side is the locking force point and cooperates with the upper convex arm of the clutch, while the lower side is the unlocking force point and cooperates with the lower convex arm.