Intelligent lock speed reducing mechanism

Abstract

The utility model relates to the technical field of intelligent lock mechanisms, in particular to an intelligent lock speed reducing mechanism which comprises an upper shell and a lower shell, a driving motor is arranged on one side of the lower shell, a worm is fixedly connected to one end of the driving motor and located in the lower shell, a transmission mechanism and a rotating rod are arranged in the lower shell, and the upper shell and the lower shell are fixedly connected with the worm. The driving motor drives the worm to rotate, finally the transmission mechanism drives the execution gear and the rotating rod to rotate, an external pin shaft can penetrate through the rotating rod at the opening, and the outer surface of the rotating rod is fixedly connected with an execution gear, and the worm drives the execution gear and the rotating rod to rotate through the transmission mechanism. The rotating rod drives a pin shaft in an external intelligent lock to rotate, the pin shaft drives a lock cylinder of the intelligent lock to rotate, the intelligent lock is opened and closed, meanwhile, the transmission mechanism conducts three times of speed reduction in the transmission process, the better speed reduction effect is achieved, and the rotating angle of the rotating rod is more precise and controllable.

Description

Technical Field

[0001] The utility model relates to the technical field of intelligent lock mechanisms, in particular to an intelligent lock speed reduction mechanism. Background Art

[0002] At present, fields such as robots and smart locks all require the use of motors to achieve the conversion or transmission of electrical energy. In order to improve the control accuracy of rotation, smart locks need to be decelerated through a deceleration mechanism.

[0003] In the prior art, a smart lock motor with a gear reduction mechanism proposed in patent application number "CN202020184403.7" includes a motor housing, a motor is arranged in the motor housing, and the motor coaxially drives the driving gear; the first sub-gear is located directly above the driving gear and meshes with it, and the second sub-gear is located directly below the driving gear and meshes with it.

[0004] However, in the above patent application, the output driven by the motor is decelerated only once with the cooperation of the driving gear and the first sub-gear, and the deceleration capacity is limited, and the rotation angle of the rotating rod cannot be controlled with higher precision. Utility Model Content

[0005] The purpose of the utility model is to provide a smart lock deceleration mechanism to solve the problems raised in the above background technology.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A smart lock deceleration mechanism includes an upper shell and a lower shell, a drive motor is arranged on one side of the lower shell, a worm is fixedly connected to one end of the drive motor and located inside the lower shell, a transmission mechanism and a rotating rod are arranged inside the lower shell, an execution gear is fixedly connected to the outer surface of the rotating rod, the worm drives the execution gear and the rotating rod to rotate through the transmission mechanism, and an opening is opened on the rotating rod for the external pin shaft to pass through.

[0008] The outer surface of the rotating rod is rotatably connected with connecting rings located above and below the executing gear, and the upper shell and the lower shell are fixedly connected with limiting sleeves. The two connecting rings are respectively located inside the two limiting sleeves, and the limiting sleeves are provided with an annular opening.

[0009] Preferably, the transmission mechanism comprises a worm wheel and a transmission gear, a first reduction gear and a second reduction gear fixed on the same shaft, and the worm wheel and the worm are meshed with each other.

[0010] Preferably, the first reduction gear comprises a first small gear and a first large gear fixed on the same shaft, and the first large gear is meshed with the transmission gear;

[0011] The second reduction gear comprises a second pinion and a second large gear fixed on the same shaft, the first pinion is meshed with the second large gear, and the second pinion is meshed with the execution gear.

[0012] Preferably, both ends of the axial rod are rotatably connected to the upper shell and the lower shell respectively.

[0013] Preferably, a screw hole is opened on the lower shell, and a fixing bolt is arranged on the upper shell. The fixing bolt passes through the upper shell and is threadedly connected to the lower shell, so as to fix the upper shell and the lower shell together.

[0014] Preferably, a fixing plate is fixedly connected to the bottom of the upper shell, a through hole is provided on the fixing plate for the worm to pass through, an opening for use with the fixing plate is provided on one side of the lower shell, and fixing holes are provided on the fixing plate and on both sides of the through hole.

[0015] Beneficial effects of the utility model:

[0016] The utility model drives the worm to rotate through a driving motor, and finally drives the executing gear and the rotating rod to rotate through the transmission mechanism. The opening allows the external pin shaft to pass through the rotating rod, and the rotating rod drives the pin shaft in the external smart lock to rotate. The pin shaft drives the lock core of the smart lock to rotate, and the smart lock is opened and closed. At the same time, the transmission mechanism performs three decelerations during the transmission process, which has a better deceleration effect and makes the rotation angle of the rotating rod more precisely controllable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the prior art description are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This utility model Figure 1 Schematic diagram of the structure inside the middle and lower shell;

[0020] Figure 3 This utility model Figure 2 The structural diagram of the transmission mechanism;

[0021] Figure 4 This utility model Figure 3 A schematic diagram of the structure of the bottom of the middle transmission mechanism;

[0022] Figure 5 This utility model Figure 1Schematic diagram of the connection between the upper shell and the lower shell.

[0023] The reference numerals in the figures are as follows:

[0024] 1. Upper shell, 2. Lower shell, 3. Driving motor, 4. Worm, 5. Rotating rod, 6. Actuating gear, 7. Opening, 8. Connecting ring, 9. Limiting sleeve, 10. Annular opening, 11. Worm gear, 12. Transmission gear, 13. First small gear, 14. First large gear, 15. Second small gear, 16. Second large gear, 17. Fixing screw hole, 18. Fixing bolt, 19. Fixing plate, 20. Through hole, 21. Fixing hole. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] A smart lock deceleration mechanism includes an upper shell 1 and a lower shell 2, a driving motor 3 is provided on one side of the lower shell 2, a worm 4 is fixedly connected to one end of the driving motor 3 and located inside the lower shell 2, a transmission mechanism and a rotating rod 5 are provided inside the lower shell 2, an execution gear 6 is fixedly connected to the outer surface of the rotating rod 5, the worm 4 drives the execution gear 6 and the rotating rod 5 to rotate through the transmission mechanism, and an opening 7 for the external pin shaft to pass through is opened on the rotating rod 5.

[0027] The outer surface of the rotating rod 5 is rotatably connected with a connecting ring 8 located above and below the executing gear 6. The upper shell 1 and the lower shell 2 are fixedly connected with a limiting sleeve 9. The two connecting rings 8 are respectively located inside the two limiting sleeves 9. The limiting sleeves 9 are provided with an annular opening 10.

[0028] like Figure 1 , Figure 5 The driving motor 3 is connected to an external power source and has a corresponding control switch on the outside. The worm 4 extends into the interior of the lower housing 2. The connecting ring 8 is located inside the limiting sleeve 9, which can position the rotating rod 5 without affecting the rotation of the rotating rod 5.

[0029] The worm 4 adopts three helix angles, and the helix angle adopts 21°, which improves the efficiency of the worm and increases the torque by 5%;

[0030] The drive motor 3 uses an 8V10000R motor, the enameled wire uses 0.29x52T, the locked-rotor current is less than 8A, and the old smart lock control board can be used;

[0031] The reduction gears were changed from 3 sets to 4 sets, and from 89i to 159i. The speed ratio was increased by 78.65%, the no-load speed was 63R, the stall torque was increased by 60% to 70%, and the stall torque was approximately 4.7Nm.

[0032] The transmission mechanism comprises a worm wheel 11 and a transmission gear 12, a first reduction gear and a second reduction gear fixed on the same shaft, and the worm wheel 11 is meshed with the worm 4.

[0033] like Figure 2 , Figure 3 and Figure 4 The size of the worm wheel 11 is larger than that of the transmission gear 12, and the worm wheel 11 and the transmission gear 12 can rotate synchronously.

[0034] The first reduction gear comprises a first small gear 13 and a first large gear 14 fixed on the same shaft, and the first large gear 14 is meshed with the transmission gear 12;

[0035] like Figure 3 and Figure 4 The size of the first large gear 14 is larger than that of the transmission gear 12, so that when the transmission gear 12 rotates one circle, the first large gear 14 and the first small gear 13 rotate less than one circle, that is, the speed of the first reduction gear is lower than that of the transmission gear 12 and the worm gear 11, realizing the first reduction.

[0036] The second reduction gear includes a second pinion 15 and a second large gear 16 fixed on the same shaft, the first pinion 13 and the second large gear 16 are meshed with each other, and the second pinion 15 is meshed with the execution gear 6 .

[0037] like Figure 3 and Figure 4 Similarly, the size of the second large gear 16 is larger than that of the first small gear 13, so that the rotation speed of the second reduction gear is lower than that of the first reduction gear, thereby realizing the second reduction.

[0038] The two ends of the shaft rod are rotatably connected to the upper shell 1 and the lower shell 2 respectively.

[0039] like Figure 5 The upper shell 1 and the lower shell 2 are both fixedly connected with sleeves, and the two ends of the shaft rod extend into the sleeves to realize the rotational connection between the two ends of the shaft rod and the upper shell 1 and the lower shell 2.

[0040] The lower shell 2 is provided with a screw hole, and the upper shell 1 is provided with a fixing bolt 18 . The fixing bolt 18 passes through the upper shell 1 and is threadedly connected to the lower shell 2 , so as to fix the upper shell 1 and the lower shell 2 together.

[0041] like Figure 1 and Figure 2 The fixing bolts 18 on the upper shell 1 and the screw holes on the lower shell 2 are aligned in the same vertical direction, so that the fixing bolts 18 can fix the upper shell 1 and the lower shell 2.

[0042] A fixing plate 19 is fixedly connected to the bottom of the upper shell 1, and a through hole 20 is provided on the fixing plate 19 for the worm 4 to pass through. An opening for use with the fixing plate 19 is provided on one side of the lower shell 2, and fixing holes 21 are provided on the fixing plate 19 and on both sides of the through hole 20.

[0043] like Figure 5 The fixing plate 19 and the drive motor 3 can be installed and fixed by passing the external bolts through the fixing holes 21. The worm 4 extends from the through hole 20 into between the upper shell 1 and the lower shell 2. The fixing plate 19 is engaged with the opening on one side of the lower shell 2, so that the upper shell 1 and the lower shell 2 are closed together.

[0044] The working principle of a smart lock deceleration mechanism provided by the utility model is as follows:

[0045] When the driving motor 3 is started, it drives the worm 4 to rotate, the worm 4 drives the worm wheel 11 to rotate, the worm wheel 11 drives the transmission gear 12 to rotate, and the transmission gear 12 drives the first large gear 14 to rotate, thereby realizing the first deceleration. At the same time, the first small gear 13 drives the second large gear 16 to rotate, thereby realizing the second deceleration. The second small gear 15 drives the execution gear 6 to rotate. The size of the execution gear 6 is larger than that of the second small gear 15, so that the rotation speed of the execution gear 6 is lower than the rotation speed of the second small gear 15, thereby realizing the third deceleration. The execution gear 6 then drives the rotating rod 5 to rotate, and the rotating rod 5 can drive the pin shaft passing through the opening 7 in the external smart lock to rotate.

[0046] Compared with the related art, the intelligent lock deceleration mechanism provided by the utility model has the following beneficial effects:

[0047] The utility model drives the worm 4 to rotate by driving the motor 3, and finally drives the execution gear 6 and the rotating rod 5 to rotate through the transmission mechanism. The opening 7 allows the external pin shaft to pass through the rotating rod 5, and the rotating rod 5 drives the pin shaft in the external smart lock to rotate, and the pin shaft drives the lock core of the smart lock to rotate, so as to open and close the smart lock. At the same time, the transmission mechanism performs three decelerations during the transmission process, which has a better deceleration effect, so that the rotation angle of the rotating rod 5 is more precisely controllable.

[0048] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A smart lock deceleration mechanism, comprising an upper housing (1) and a lower housing (2), characterized in that: A driving motor (3) is provided on one side of the lower housing (2); a worm (4) is fixedly connected to one end of the driving motor (3) and located inside the lower housing (2); a transmission mechanism and a rotating rod (5) are provided inside the lower housing (2); an execution gear (6) is fixedly connected to the outer surface of the rotating rod (5); the worm (4) drives the execution gear (6) and the rotating rod (5) to rotate through the transmission mechanism; and an opening (7) for an external pin shaft to pass through is provided on the rotating rod (5); The outer surface of the rotating rod (5) is rotatably connected with a connecting ring (8) located above and below the execution gear (6); the upper shell (1) and the lower shell (2) are fixedly connected with a limiting sleeve (9); the two connecting rings (8) are respectively located inside the two limiting sleeves (9); and the limiting sleeve (9) is provided with an annular opening (10).

2. The intelligent lock deceleration mechanism according to claim 1, characterized in that: The transmission mechanism comprises a worm wheel (11) and a transmission gear (12), a first reduction gear and a second reduction gear fixed on the same shaft, and the worm wheel (11) and the worm (4) are meshed.

3. The intelligent lock deceleration mechanism according to claim 2, characterized in that: The first reduction gear comprises a first small gear (13) and a first large gear (14) fixed on the same shaft, and the first large gear (14) is meshed with the transmission gear (12); The second reduction gear comprises a second pinion (15) and a second large gear (16) fixed on the same shaft, the first pinion (13) and the second large gear (16) are meshed with each other, and the second pinion (15) and the execution gear (6) are meshed with each other.

4. A smart lock deceleration mechanism according to claim 2 or 3, characterized in that: The two ends of the axial rod are rotatably connected to the upper shell (1) and the lower shell (2) respectively.

5. The intelligent lock deceleration mechanism according to claim 1, characterized in that: The lower shell (2) is provided with a screw hole, and the upper shell (1) is provided with a fixing bolt (18). The fixing bolt (18) passes through the upper shell (1) and is threadedly connected to the lower shell (2) for fixing the upper shell (1) and the lower shell (2) together.

6. The intelligent lock deceleration mechanism according to claim 1, characterized in that: The bottom of the upper shell (1) is fixedly connected to a fixing plate (19), the fixing plate (19) is provided with a through hole (20) for the worm (4) to pass through, one side of the lower shell (2) is provided with an opening for use with the fixing plate (19), and fixing holes (21) are provided on the fixing plate (19) and located on both sides of the through hole (20).

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