Transmission mechanism and intelligent lock sticker

Abstract

The transmission mechanism comprises a connector and a fixing base rotationally connected with the connector, a motor, a control circuit board, a battery and a gear transmission assembly are connected to the fixing base, the motor and the battery are both electrically connected with the control circuit board, and a motor gear capable of rotating along with a motor shaft is connected to the motor. The connector is concaved inwards to form a first annular groove, a plurality of inner gear teeth are arranged on the side wall of the first annular groove in the circumferential direction, the gear transmission assembly is meshed with the inner gear teeth, the motor gear penetrates out of the fixing base upwards and is meshed with the gear transmission assembly, and the motor can drive the gear transmission assembly so that the gear transmission assembly can act around the inner gear teeth. The arrangement of the inner gear teeth provides stable support for the gear transmission assembly, guides the final motion trail of the gear transmission assembly, ensures that the gear transmission assembly stably rotates according to a preset path, and avoids power loss or failure caused by gear deviation. The utility model further provides the intelligent lock sticker comprising the transmission mechanism.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of lockset, concretely relates to a transmission mechanism and a smart lock sticker. BACKGROUND

[0002] With the rapid development of technologies such as the Internet of Things, mobile Internet, and artificial intelligence, smart locks have been rapidly popularized as part of smart homes. Smart locks not only provide higher security, but also realize functions such as remote control, automatic unlocking, user permission management, and access records. However, existing smart locks usually need to completely replace the original mechanical lock system, which not only increases the cost of users, but also causes resource waste.

[0003] Against this background, smart lock stickers emerged as an innovative solution. A smart lock sticker is a device specially designed to connect a normal mechanical lock core. It can give the original mechanical lock structure intelligent features without changing it. By installing a smart lock sticker, users can retain the existing mechanical lock core while enjoying the convenience and advanced functions brought by smart locks.

[0004] In the existing design of smart lock stickers, the stability and reliability of the transmission mechanism are key performance indicators. The gear transmission assembly of existing smart lock stickers usually lacks stable support structures and is prone to deviation or shaking during rotation, leading to inaccurate power transmission or even failure. Especially after long-term use, the matching precision between gears decreases, further affecting the stability of the system. At the same time, the movement trajectory of the gears is not accurately guided, which can cause the gears to deviate from the predetermined path, affecting the accuracy of the unlocking / closing action and possibly causing the gears to jam or be damaged, increasing maintenance costs and failure rates. For example, the Chinese invention patent with the patent name of a mechanical lock driving device installation structure, authorization announcement number CN114562157B, and public date May 31, 2022, has the above-mentioned problems.

[0005] Therefore, how to overcome the above-mentioned defects and provide a transmission mechanism and a smart lock sticker with stable support, stable transmission, and accuracy has become an important topic for technicians in the field to solve. Utility model content

[0006] The utility model overcomes the above-mentioned technical deficiencies and provides a transmission mechanism and a smart lock sticker.

[0007] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0008] A transmission mechanism comprises a connecting head and a fixed seat rotatably connected with the connecting head, a motor, a control circuit board, a battery and a gear transmission assembly are connected with the fixed seat, the motor and the battery are electrically connected with the control circuit board, a motor gear rotatable with a motor shaft is connected with the motor, a first annular groove is formed in the connecting head, a plurality of internal gears are circumferentially arranged on the side wall of the first annular groove, the gear transmission assembly is meshed with the internal gears, the motor gear penetrates the fixed seat upward and is meshed with the gear transmission assembly, the motor can drive the gear transmission assembly so that the gear transmission assembly moves around the internal gears.

[0009] Further, the gear transmission assembly comprises a first gear meshed with the motor gear, a second gear coaxially connected above the first gear and synchronously rotatable with the first gear, a third gear meshed with the second gear, a fourth gear coaxially connected above the third gear and synchronously rotatable with the third gear, a swing arm coaxially arranged above the fourth gear and rotatable relative to the fourth gear, a clutch gear rotatably connected with the swing arm and meshed with the fourth gear, a fifth gear meshed with the clutch gear after the clutch gear is rotated into position, a sixth gear coaxially connected above the fifth gear and synchronously rotatable with the fifth gear, and the sixth gear is meshed with the internal gears.

[0010] Further, the swing arm comprises an upwardly arranged connecting column, and the swing arm further comprises a downwardly arranged first gear shaft, and the clutch gear is rotatably sleeved on the first gear shaft.

[0011] Further, the first gear shaft and the clutch gear are both provided with two, one of the clutch gears can be meshed with the fifth gear when the motor is rotated forward into position, and the other clutch gear can be meshed with the fifth gear when the motor is reversed into position.

[0012] Further, the fixed seat is further provided with a second gear shaft and a third gear shaft, the first gear and the second gear are coaxially sleeved on the second gear shaft and synchronously rotatable, and the third gear and the fourth gear are coaxially sleeved on the third gear shaft and synchronously rotatable.

[0013] Further, the gear transmission mechanism further comprises a fourth gear shaft, the fifth gear and the sixth gear are coaxially connected and fixed by the fourth gear shaft and synchronously rotatable, a second limiting hole is formed in the upper end of the fixed seat, the lower end of the fourth gear shaft is fixedly connected in the second limiting hole, and the sixth gear moves around the internal gears when the fixed seat rotates relative to the connecting head.

[0014] Further, a motor accommodating cavity for accommodating the motor is formed in the side wall of the fixed seat, and a battery accommodating cavity for accommodating the battery is also formed in the side wall of the fixed seat.

[0015] The intelligent lock sticker comprises the transmission mechanism as described above, further comprises a shell rotationally connected with the connecting head, the fixing seat is detachably connected in the shell, the fixing seat is fixed in circumference relative to the shell so as to rotate synchronously with the shell, a button for driving the motor to work is arranged at the bottom of the shell, the connecting head is rotationally connected with a connecting shaft with two ends penetrating out of the connecting head, one end of the connecting shaft is fixedly connected with the shell, and the other end is used for being connected with an external mechanical lock core.

[0016] Compared with the prior art, the intelligent lock sticker has the following beneficial effects:

[0017] The inner gear teeth are arranged on the sidewall of the first annular groove of the connecting head and are equidistantly arranged in circumference, and are always kept in engagement with the gear transmission assembly. The arrangement of the inner gear teeth provides stable support for the gear transmission assembly, ensures that the gear transmission assembly will not be deviated or shaken during rotation, simultaneously determines and guides the final movement track of the gear transmission assembly, ensures that the gear transmission assembly rotates stably along the predetermined path, guarantees the accuracy and stability of power transmission, and avoids power loss or failure caused by gear deviation. The inner gear teeth and the gear transmission assembly are precisely engaged and matched to form a closed transmission chain, which can effectively ensure that the power transmitted by the motor through the gear transmission assembly can accurately reach the connecting head. Through the structure design of the close engagement and matching, the energy loss in the power transmission process is reduced, the accuracy and efficiency of the system are improved, and failure caused by transmission error is avoided. Through the precise gear engagement, vibration and noise are reduced, and the unlocking action is more stable. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a schematic view of the transmission mechanism of the present application in the state of overall assembly.

[0019] Figure 2 is a schematic view of the structure of the connecting head of the present application.

[0020] Figure 3 is a schematic view of the structure of the fixing seat of the present application.

[0021] Figure 4 is a schematic view of the structure of the motor and the gear transmission assembly of the present application.

[0022] Figure 5 is a schematic view of the structure of the intelligent lock sticker of the present application. DETAILED DESCRIPTION

[0023] The features of the present application and other related features are further described in detail through the following embodiments, so as to facilitate the understanding of the skilled in the art:

[0024] For example, Figures 1 to 5As shown, the case provides a transmission mechanism, including a connecting head 1 and a fixed seat 3 rotationally connected with the connecting head 1, the fixed seat 3 is connected with a motor 4, a control circuit board 5, a battery 6 and a gear transmission assembly 7. The connecting head 1 is used for connecting an external mechanical lock cylinder, so as to realize the intelligent demand of the mechanical lock cylinder. The fixed seat 3 is used for supporting and fixing the internal components such as the motor 4, the control circuit board 5, the battery 6 and the gear transmission assembly 7. In specific implementation, the motor 4 and the battery 6 are electrically connected with the control circuit board 5. The motor 4 is connected with a motor gear 42 which can rotate with the motor shaft 41. The connecting head 1 is concave and a first annular groove 15 is formed on the connecting head 1, a plurality of inner teeth 151 are circumferentially arranged on the side wall of the first annular groove 15, the gear transmission assembly 7 is engaged with the inner teeth 151, the motor gear 42 penetrates the fixed seat 3 upward and is engaged with the gear transmission assembly 7, the motor 4 can drive the gear transmission assembly 7 so as to make the gear transmission assembly 7 move around the inner teeth 151. The case provides stable support for the gear transmission assembly 7 through the inner teeth 151, ensures that it will not deviate or shake during rotation, improves the stability and reliability of power transmission. The inner teeth 151 determine and guide the movement track of the gear transmission assembly 7, ensure its smooth rotation according to the predetermined path, avoid power loss or failure caused by gear deviation. The inner teeth 151 and the sixth gear 78 are precisely engaged, forming a closed transmission chain, reducing the energy loss in the power transmission process, improving the efficiency of the system.

[0025] Specifically, as 2, Figure 4As shown, the gear transmission assembly 7 comprises a first gear 71 engaged with the motor gear 42, a second gear 72 coaxially connected above the first gear 71 and synchronously rotating with the first gear 71, a third gear 73 engaged with the second gear 72, a fourth gear 74 coaxially connected above the third gear 73 and synchronously rotating with the third gear 73, a swing arm 75 coaxially arranged above the fourth gear 74 and capable of rotating relative to the fourth gear 74, a clutch gear 76 rotatingly connected to the swing arm 75 and engaged with the fourth gear 74, a fifth gear 77 engaged with the clutch gear 76 after the clutch gear 76 rotates into position, a sixth gear 78 coaxially connected above the fifth gear 77 and synchronously rotating with the fifth gear 77, and the sixth gear 78 is engaged with the inner gear teeth 151. Through the rotation of the swing arm 75, the action of the clutch gear 76 can be flexibly controlled to realize the switching between the motor 4 unlocking and the knob unlocking mode through the disengagement and engagement of the clutch gear 76 and the fifth gear 77. Even when the motor 4 is damaged or the battery 6 is out of power, the user can still perform unlocking through the above-mentioned knob unlocking mode, and at the same time, this structure can effectively protect the motor 4. Specifically, when the motor 4 fails or the battery 6 is out of power and cannot be unlocked in the state that the clutch gear 76 is disengaged from the fifth gear 77, the user can perform unlocking by rotating the shell 2; when the motor 4 fails or the battery 6 is out of power and cannot be unlocked in the state that the clutch gear 76 is engaged with the fifth gear 77, this situation generally occurs when the motor 4 is damaged or the battery 6 is out of power in the state that the motor 4 unlocking action has been performed for half, the user can still perform unlocking by rotating the shell 2, specifically, through the rotation of the shell 2, the reverse drive gear transmission mechanism 7 is actuated. Preferably, the first gear 71 and the second gear 72 are a double gear designed as a whole, and the third gear 73 and the fourth gear 74 are a double gear designed as a whole, and in order to facilitate clearer description and understanding, they are named separately. The multi-stage gear engagement transmission design of the above-mentioned gear transmission assembly 7 is beneficial to more stable and precise unlocking.

[0026] As shown in 2, Figure 4 Further, the swing arm 75 comprises a connecting column 751 arranged upward, which is used to rotatably connect the swing arm 75 with the outside, ensuring that the swing arm 75 can rotate relative to the outside, and at the same time limiting the swing arm 75 to avoid displacement and affecting the entire gear transmission mechanism 7. The swing arm 75 further comprises a first gear shaft 752 arranged downward, and the clutch gear 76 is rotatably sleeved on the first gear shaft 752. The first gear shaft 752 provides a stable rotation fulcrum and limiting support for the clutch gear 76, effectively preventing the clutch gear 76 from disengaging from the fourth gear 75.

[0027] As shown in 2, Figure 4As shown, further, the first gear shaft 752 and the clutch gear 76 are both provided with two, one of which can engage with the fifth gear 77 when the motor 4 is forward rotated to position, and the other of which can engage with the fifth gear 77 when the motor 4 is reverse rotated to position. In the case, the first gear shaft 752 and the clutch gear 76 are both provided with two. One of which can engage with the fifth gear 77 when the motor 4 is forward rotated to position, and the other of which can engage with the fifth gear 77 when the motor 4 is reverse rotated to position. When locking / unlocking is achieved by forward and reverse rotation of the motor 4, different clutch gears 76 are used respectively, effectively improving the stability and service life of the clutch gear 76 and the entire gear transmission mechanism 7, reducing the stroke of the motor 4 unlocking, and achieving faster response. As above, by providing two clutch gears 76, the power supply can be effectively saved, the loss is reduced, the wear of the clutch gear 76 is shared, and the stability and service life of the entire gear transmission mechanism 7 are improved. It should be noted that the double clutch gear 76 makes the system more stable, reduces the overall failure probability caused by the failure of a single component, and even if one of the clutch gears 76 fails, the other can still work normally, and the entire gear transmission mechanism 7 can still operate normally, enhancing the fault tolerance of the system. By using two clutch gears 76 to handle the forward and reverse rotation of the motor 4 respectively, the logic design of the control system is simplified, and the control system only needs to select the corresponding clutch gear 76 according to the rotation direction of the motor 4, without complex intermediate state switching, reducing the complexity of the control system, improving the control accuracy, and avoiding misoperation caused by intermediate state switching.

[0028] Further, as shown in Figure 1 、 Figure 3 、 Figure 4 The second gear shaft 711 and the third gear shaft 731 are also fixedly installed on the fixed seat 3, the first gear 71 and the second gear 72 are coaxially sleeved on the second gear shaft 711 and can synchronously rotate, and the third gear 73 and the fourth gear 74 are coaxially sleeved on the third gear shaft 731 and can synchronously rotate. The second gear shaft 711 and the third gear shaft 731 fixedly installed on the fixed seat 3 provide stable rotating shafts for the first gear 71 and the second gear 72, the third gear 73 and the fourth gear 74 respectively, and also serve as a support, ensuring the synchronous rotation between the gears and improving the efficiency of power transmission.

[0029] Further, continuing to refer to Figure 1 、 Figure 3 、 Figure 4As shown, the gear transmission mechanism 7 further comprises a fourth gear shaft 771, the fifth gear 77 and the sixth gear 78 are coaxially connected and fixed and synchronously rotated through the fourth gear shaft 771, a second limiting hole 36 is formed in the upper end of the fixed seat 3, the lower end of the fourth gear shaft 771 is fixedly connected in the second limiting hole 36, and the sixth gear 78 moves around the inner gear teeth 151 when the fixed seat 3 rotates relative to the connecting head 1. The sixth gear 78 moves around the inner gear teeth 151 when the fixed seat 3 rotates relative to the connecting head 1. The design of the second limiting hole 36 provides mounting space for the fourth gear shaft 771. Since the fourth gear shaft 771 is fixedly connected to the fixed seat 3, the sixth gear 78 can move around the inner gear teeth 151 to achieve smooth and accurate rotary knob locking / unlocking when the user rotates the fixed seat 3.

[0030] As shown in Figure 1 、 Figure 3 Figure 4 Figure 1 Figure 3 Further, a motor accommodating cavity 33 for accommodating the motor 4 is formed in the inner recess of the side wall of the fixed seat 3, and a battery accommodating cavity 34 for accommodating the battery 6 is also formed in the inner recess of the side wall of the fixed seat 3. The motor accommodating cavity 33 can stably mount the motor 4 on the fixed seat 3, and the battery accommodating cavity 34 can stably mount the battery 6 on the fixed seat 3, improving the stability of the overall structure connection. Through the design of this structure, the space is reasonably utilized to further reduce the installation space, so that the overall volume of the transmission mechanism of the present case is smaller, and it is convenient to apply it to the smart lock sticker.

[0031] The present case also provides a smart lock sticker, which comprises the above-mentioned transmission mechanism, and further comprises a shell 2 rotationally connected with the connecting head 1, the fixed seat 3 is detachably connected in the shell 2, the fixed seat 3 is circumferentially fixed relative to the shell 2 so as to be synchronously rotated with the shell 2, the shell 2 is provided with a button 2221 for driving the motor 4 to work, the connecting head 1 is rotationally connected with a connecting shaft 12 having two ends penetrating out of the connecting head 1, one end of the connecting shaft 12 is fixedly connected to the shell 2, and the other end is used for connecting with an external mechanical lock cylinder. By inserting the connecting shaft 12 into the external mechanical lock cylinder, the intelligentization of the mechanical lock cylinder is realized.

[0032] As described above, the present case protects a transmission mechanism and a smart lock sticker, and all technical solutions similar or similar to the present case shall be shown to fall within the protection scope of the present case.

Claims

1. A transmission mechanism comprising a connecting head (1) and a fixed seat (3) rotatably connected with the connecting head (1), a motor (4), a control circuit board (5), a battery (6) and a gear transmission assembly (7) being connected on the fixed seat (3), the motor (4) and the battery (6) being electrically connected with the control circuit board (5), a motor gear (42) rotatable with a motor shaft (41) being connected on the motor (4), characterized in that: The first annular groove (15) is formed on the inner recess of the connecting head (1), and a plurality of inner gears (151) are arranged on the side wall of the first annular groove (15) in a circumferential direction. The gear transmission assembly (7) is engaged with the inner gears (151). The motor gear (42) penetrates the fixed seat (3) upward and is engaged with the gear transmission assembly (7). The motor (4) can drive the gear transmission assembly (7) to make the gear transmission assembly (7) move around the inner gears (151).

2. A transmission mechanism according to claim 1, characterised in that: The gear transmission assembly (7) comprises a first gear (71) engaged with the motor gear (42), a second gear (72) coaxially connected above the first gear (71) and synchronously rotating with the first gear (71), a third gear (73) engaged with the second gear (72), a fourth gear (74) coaxially connected above the third gear (73) and synchronously rotating with the third gear (73), a swing arm (75) coaxially arranged above the fourth gear (74) and capable of rotating relative to the fourth gear (74), a clutch gear (76) rotatingly connected to the swing arm (75) and engaged with the fourth gear (74), a fifth gear (77) engaged with the clutch gear (76) after the clutch gear (76) rotates to a position, and a sixth gear (78) coaxially connected above the fifth gear (77) and synchronously rotating with the fifth gear (77). The sixth gear (78) is engaged with the inner gears (151).

3. A transmission mechanism according to claim 2, wherein: The swing arm (75) comprises an upwardly arranged connecting column (751), and the swing arm (75) further comprises a downwardly arranged first gear shaft (752). The clutch gear (76) is rotatably sleeved on the first gear shaft (752).

4. A transmission mechanism according to claim 3, wherein: The first gear shaft (752) and the clutch gear (76) are both provided with two. When the motor (4) rotates forward to a position, one of the clutch gears (76) can be engaged with the fifth gear (77). When the motor (4) reverses to a position, the other clutch gear (76) can be engaged with the fifth gear (77).

5. A transmission mechanism according to claim 4, wherein: The fixed seat (3) is further provided with a second gear shaft (711) and a third gear shaft (731). The first gear (71) and the second gear (72) are coaxially sleeved on the second gear shaft (711) and can synchronously rotate. The third gear (73) and the fourth gear (74) are coaxially sleeved on the third gear shaft (731) and can synchronously rotate.

6. A transmission mechanism according to claim 5, wherein: The gear transmission assembly (7) further comprises a fourth gear shaft (771). The fifth gear (77) and the sixth gear (78) are coaxially connected and fixed by the fourth gear shaft (771) and synchronously rotate. The fixed seat (3) is provided with a second limiting hole (36) at an upper end. The lower end of the fourth gear shaft (771) is fixedly connected in the second limiting hole (36). When the fixed seat (3) rotates relative to the connecting head (1), the sixth gear (78) moves around the inner gears (151).

7. A transmission mechanism according to claim 1, wherein: The side wall of the fixing base (3) is concave and has a motor accommodating cavity (33) for accommodating the motor (4), and also has a battery accommodating cavity (34) for accommodating the battery (6).

8. A smart lock sticker comprising the transmission mechanism of any one of claims 1-7, characterized in that: The fixing base (3) is detachably connected to the shell (2), and is circumferentially fixed relative to the shell (2) so as to rotate synchronously with the shell (2). The bottom of the shell (2) is provided with a button (2221) for driving the motor (4) to work. The connecting head (1) is rotatably connected to a connecting shaft (12) with two ends penetrating through the connecting head (1). One end of the connecting shaft (12) is fixedly connected to the shell (2), and the other end is used for being connected to an external mechanical lock core.

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