Telescopic gearbox for massager

Abstract

A telescopic gearbox for a massager comprises a telescopic assembly, a swing arm piece, a gear assembly, a protective shell and a motor device, the gear assembly is movably installed in the protective shell, a double-end worm is arranged at the output end of the motor device and installed in the protective shell, the double-end worm is connected with the gear assembly, and the swing arm piece is connected with the motor device. The swing arm piece is located between the telescopic assembly and the protective shell, one end of the swing arm piece is connected with the output end of the gear assembly, the other end of the swing arm piece is connected with the telescopic assembly, the telescopic assembly comprises a telescopic base and guide sliding rods, and the guide sliding rods are installed on the two sides of the protective shell; the ends of the two sides of the telescopic base are connected with the guide sliding rods in a sliding mode, a swing connecting hole is formed in the telescopic base, and the other end of the swing arm piece is inserted into the swing connecting hole to be movably connected with the telescopic base. According to the utility model, the swing arm piece rotates to drive the telescopic assembly to do telescopic motion, direct acting force of the motor device and the gear assembly is dispersed, flexible transmission is realized, better telescopic, speed and sound effects can be realized, stable output can be provided, and vibration and noise can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of health care equipment technology, specifically a telescopic dental box for a massager. Background Technology

[0002] A gearbox, also known as a transmission, is a device that increases or decreases rotational speed and torque through the meshing of gears of different sizes. It can be categorized into types such as pullback gearboxes, chain gearboxes, and flywheel inertia gearboxes, and is widely used in electric toothbrushes, shavers, electric toys, and health care equipment. In most existing telescopic gearboxes of massagers, the gear assembly and the telescopic component move in the same direction. Since the deceleration effect is extremely important in massagers, and the output end of the gear assembly directly drives the telescopic component's up-and-down movement, this type of telescopic gearbox structure does not achieve good telescopic, speed, and noise reduction effects, and cannot provide a smoother output, affecting the user experience and quality. Therefore, it is essential to design a telescopic gearbox that operates smoothly and is highly practical. Utility Model Content

[0003] The purpose of this invention is to provide a telescopic jaw box for a massager, aiming to solve the above-mentioned technical problems. This invention, through the cooperation of a motor device, gear assembly, telescopic assembly and swing arm, can disperse the direct force of the motor device and gear assembly through the swing arm, avoid the telescopic assembly from being subjected to linear impact in one direction for a long time, achieve flexible transmission, thereby achieving good telescopic, speed and sound effects, providing a more stable output, and is highly practical.

[0004] To achieve the above objectives, this utility model employs the following technical solution:

[0005] A telescopic jaw box for a massager includes a telescopic assembly, a swing arm, a gear assembly, a protective shell, and a motor. The gear assembly is movably mounted inside the protective shell. The output end of the motor is provided with a double-headed worm gear, which is installed inside the protective shell and connected to the gear assembly. The swing arm is located between the telescopic assembly and the protective shell, with one end connected to the output end of the gear assembly and the other end connected to the telescopic assembly. The telescopic assembly includes a telescopic seat and a guide sliding rod. The guide sliding rod is installed on both sides of the protective shell. The two ends of the telescopic seat are slidably connected to the guide sliding rod. The telescopic seat is provided with a swing connection hole, and the other end of the swing arm is inserted into the swing connection hole and movably connected to the telescopic seat.

[0006] Furthermore, the gear assembly includes a turbine, a first gear, a second gear, and a third gear. The side of the double-headed worm gear meshes with the turbine. A first connecting shaft is provided at the center of one side of the turbine. A first gear is fixedly connected through the center of the outer surface of the first connecting shaft. The first gear meshes with the second gear above it. The second gear meshes with the third gear above it. A transmission connecting shaft is provided on the third gear. One end of the transmission connecting shaft passes through the protective shell and connects to the swing arm.

[0007] Furthermore, the swing arm is L-shaped and includes a horizontal connecting part and a vertical connecting part. One end of the vertical connecting part is connected to the transmission connecting shaft, and the other end of the vertical connecting part is connected to the horizontal connecting part. The other end of the horizontal connecting part is inserted into the swing connecting hole and movably connected to the telescopic seat.

[0008] Furthermore, the swing arm is provided with a limiting locking member, one end of which is connected to the transverse connecting part, and the other end of which passes through the swing connecting hole and is movably connected to the telescopic seat.

[0009] Furthermore, the telescopic seat is in the shape of a "7", and includes a telescopic horizontal part and a telescopic vertical part. The telescopic horizontal part is located above the protective shell, and the swing connection hole is located on the telescopic vertical part.

[0010] Furthermore, both ends of the telescopic vertical part are provided with guide connecting parts, and the guide connecting parts are provided with sliding holes. The guide connecting parts are inserted into the guide sliding rod through the sliding holes.

[0011] Furthermore, the protective shell has sliding rod fixing parts on both sides, and the guide sliding rod is installed on the sliding rod fixing parts.

[0012] Furthermore, the overall speed ratio of the double-headed worm gear and gear assembly is twenty.

[0013] Furthermore, the overall speed ratio of the double-headed worm gear and gear assembly is thirty.

[0014] The telescopic dental box for this massager has the following beneficial effects:

[0015] This utility model relates to a telescopic jaw box for a massager. By setting a swing arm between the gear assembly and the telescopic assembly, and with the cooperation of the motor, gear assembly, telescopic assembly, and swing arm, the gear assembly drives the swing arm to rotate, thereby driving the telescopic assembly to move up and down. This design can disperse the direct force of the motor and gear assembly through the swing arm, avoiding the telescopic assembly from being subjected to linear impact in one direction for a long time, thus extending the service life of this utility model. At the same time, the output force and stroke can be adjusted by the length and angle of the swing arm to achieve flexible transmission, provide stable output, reduce vibration and noise, and achieve better telescopic, speed and sound effects, making it highly practical. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the telescopic dental box for the massager of this utility model;

[0017] Figure 2 for Figure 1 The diagram shows the structure of the motor assembly, gear structure, and front housing.

[0018] Figure 3 This is an exploded view of the structure of the telescopic dental box for the massager of this utility model. Figure 1 ;

[0019] Figure 4 This is an exploded view of the structure of the telescopic dental box for the massager of this utility model. Figure 2 ;

[0020] The numbers on the map are:

[0021] 1. Telescopic assembly; 2. Swing arm; 3. Protective shell; 4. Motor assembly; 5. Double-headed worm gear; 6. Telescopic seat; 7. Guide sliding rod; 8. Swing connecting hole; 9. Turbine; 10. First gear; 11. Second gear; 12. Third gear; 13. First connecting shaft; 14. Second connecting shaft; 15. Transmission connecting shaft; 16. Lateral connecting part; 17. Vertical connecting part; 18. Limiting locking part; 19. Telescopic lateral part; 20. Telescopic vertical part; 21. Sliding rod fixing part; 22. Front shell; 23. Rear shell. Detailed Implementation

[0022] To enable those skilled in the art to better understand the technical solution of this utility model, the product of this utility model will be further described in detail below with reference to the embodiments and accompanying drawings.

[0023] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0025] Example 1:

[0026] like Figures 1 to 4 As shown, a telescopic jaw box for a massager includes a telescopic assembly 1, a swing arm 2, a gear assembly, a protective shell 3, and a motor device 4. The gear assembly is movably installed inside the protective shell 3. The output end of the motor device 4 is provided with a double-headed worm gear 5, which is installed inside the protective shell 3, and one end of the double-headed worm gear 5 is connected to the gear assembly. The swing arm 2 is located between the telescopic assembly 1 and the protective shell 3, and one end of the swing arm 2 is connected to the output end of the gear assembly. The other end of the swing arm 2 is connected to the telescopic assembly 1. The telescopic assembly 1 includes a telescopic seat 6 and a guide sliding rod 7. The guide sliding rod 7 is installed on both sides of the protective shell 3. The two ends of the telescopic seat 6 are slidably connected to the guide sliding rod 7. The telescopic seat 6 is provided with a swing connection hole 8, and the other end of the swing arm 2 is inserted into the swing connection hole 8 and movably connected to the telescopic seat 6.

[0027] It should be noted that this utility model, by setting a swing arm 2 between the gear assembly and the telescopic assembly 1, with the cooperation of the motor device 4, gear assembly, telescopic assembly 1 and swing arm 2, when the gear assembly drives the swing arm 2 to rotate, thereby driving the telescopic assembly 1 to move up and down. This setting can disperse the direct force of the motor device 4 and gear assembly through the swing arm 2, avoiding the telescopic assembly 1 from being subjected to linear impact in one direction for a long time, thereby extending the service life of this utility model. At the same time, the output force and stroke can be adjusted by the length and angle of the swing arm 2 to achieve flexible transmission, provide stable output, reduce vibration and noise, and achieve better telescopic, speed and sound effects, making it highly practical.

[0028] like Figure 2As shown, the gear assembly includes a worm gear 9, a first gear 10, a second gear 11, and a third gear 12. The double-headed worm gear 5 is meshed with the worm gear 9 on its side. A first connecting shaft 13 is provided at the center of one side of the worm gear 9. The first gear 10 is fixedly connected through the center of the outer surface of the first connecting shaft 13. The first gear 10 is meshed with the second gear 11 above it. The second gear 11 is meshed with the third gear 12 above it. A second connecting shaft 14 is provided on the second gear 11. A transmission connecting shaft 15 is provided on the third gear 12. One end of the transmission connecting shaft 15 passes through the protective shell 3 and is connected to the swing arm 2. The gear assembly in this embodiment can be made of plastic.

[0029] like Figure 4 As shown, the swing arm 2 is L-shaped and includes a horizontal connecting part 16 and a vertical connecting part 17. One end of the vertical connecting part 17 is connected to the transmission connecting shaft 15, and the other end of the vertical connecting part 17 is connected to the horizontal connecting part 16. The other end of the horizontal connecting part 16 is inserted into the swing connecting hole 8 and movably connected to the telescopic seat 6. The horizontal connecting part 16 and the vertical connecting part 17 are integrally formed.

[0030] like Figure 4 As shown, the swing arm 2 is provided with a limiting locking member 18. One end of the limiting locking member 18 is connected to the transverse connecting part 16, and the other end of the limiting locking member 18 passes through the swing connecting hole 8 and is movably connected to the telescopic seat 6.

[0031] like Figure 4 As shown, the telescopic base 6 is shaped like a "7" and includes a telescopic horizontal portion 19 and a telescopic vertical portion 20. The telescopic horizontal portion 19 is located above the protective shell 3, and the swing connection hole 8 is located on the telescopic vertical portion 20. The telescopic horizontal portion 19 is used to connect other related devices. The telescopic horizontal portion 19 and the telescopic vertical portion 20 are integrally formed.

[0032] like Figures 1 to 4 As shown, both ends of the telescopic vertical part 20 are provided with guide connecting parts, and the guide connecting parts are provided with sliding holes. The guide connecting parts are connected to the guide sliding rod 7 through the sliding holes.

[0033] like Figures 1 to 4 As shown, the protective shell 3 has sliding rod fixing parts 21 on both sides, and the guide sliding rod 7 is installed on the sliding rod fixing parts 21.

[0034] like Figures 1 to 4 As shown, the lower end of the protective shell 3 is open to facilitate the installation of the motor device 4.

[0035] like Figures 1 to 4As shown, the protective shell 3 includes a front shell 22 and a rear shell 23, which are detachably connected. The front shell 22 has several front mounting holes, and the rear shell 23 has several rear mounting holes. The front mounting holes correspond to the rear mounting holes, and fittings can be used to fasten the connection between the front shell 22 and the rear shell 23 through the front and rear mounting holes. The sliding rod fixing part 21 is located on the rear shell 23.

[0036] like Figures 1 to 4 As shown, the front housing 22 is also provided with a motor connection hole, and the front housing 22 and the motor device 4 can be fastened together by means of an assembly through the motor connection hole.

[0037] like Figures 1 to 4 As shown, the front housing 22 is also provided with a shaft hole, and one end of the transmission connecting shaft 15 passes through the front housing 22 and is connected to the swing arm 2.

[0038] like Figures 1 to 4 As shown, the inner side of the front shell 22 is provided with a first limiting hole and a second limiting hole, and the inner side of the rear shell 23 is provided with a third limiting hole, a fourth limiting hole and a fifth limiting hole. One end of the first connecting shaft 13 is located in the first limiting hole, and the other end of the first connecting shaft 13 is located in the third limiting hole. One end of the second connecting shaft 14 is located in the second limiting hole, and the other end of the second connecting shaft 14 is located in the fourth limiting hole. The other end of the transmission connecting shaft 15 is located in the fifth limiting hole. This design facilitates the positioning of the limiting gear assembly within the protective shell 3 and improves the overall operational stability.

[0039] like Figures 1 to 4 As shown, the total speed ratio of the double-headed worm gear 5 and the gear assembly is twenty, which enables the motor device 4 of this invention to provide greater torque when running at low speed, making it more suitable for high-frequency vibration massage that requires moderate intensity. The high transmission ratio is achieved through multi-stage reduction of the gear assembly, which can maintain a constant transmission ratio and avoid disordered massage rhythm. At the same time, it can provide stable output during operation and reduce vibration and noise.

[0040] It should be noted that the calculation method for the total speed ratio of the gear assembly being 20 is as follows: the number of teeth of the double-headed worm 5 is 2, the number of teeth of the turbine 9 is 23, the number of teeth of the first gear 10 is 13, the number of teeth of the second gear 11 is 22, the number of teeth of the third gear 12 is 22, (22 / 13)*(23 / 2)=20.

[0041] Example 2:

[0042] The difference from Embodiment 1 is that the total speed ratio of the double-headed worm gear 5 and the gear assembly is thirty, which can significantly amplify the output torque of the motor device 4 and focus more on slow and powerful output. The gear assembly of this utility model achieves a high transmission ratio through multi-stage reduction, which saves space, consumes less energy, and can maintain a constant transmission ratio, avoids massage rhythm disorder, and reduces vibration and noise.

[0043] It should be noted that the calculation method for the total speed ratio of the gear assembly to be thirty is as follows: the number of teeth of the double-headed worm 5 is two, the number of teeth of the turbine 9 is twenty-three, the number of teeth of the first gear 10 is ten, the number of teeth of the second gear 11 is twenty-two, and the number of teeth of the third gear 12 is twenty-six. (26 / 10)*(23 / 2)=30.

[0044] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Those skilled in the art can readily implement the present utility model according to the accompanying drawings and the above description. However, any modifications, alterations, or equivalent changes made by those skilled in the art without departing from the scope of the present utility model's technical solution, based on the disclosed technical content, are all equivalent embodiments of the present utility model. Furthermore, any equivalent changes, alterations, or evolutions made to the above embodiments based on the essential technology of the present utility model still fall within the technical solution of the present utility model.

Claims

1. A telescopic dental box for a massager, characterized in that: The device includes a telescopic assembly (1), a swing arm (2), a gear assembly, a protective shell (3), and a motor device (4). The gear assembly is movably installed inside the protective shell (3). The output end of the motor device (4) is provided with a double-headed worm gear (5), which is installed inside the protective shell (3) and connected to the gear assembly. The swing arm (2) is located between the telescopic assembly (1) and the protective shell (3), with one end of the swing arm (2) connected to the output end of the gear assembly and the other end of the swing arm (2) connected to the telescopic assembly (1). The telescopic assembly (1) includes a telescopic seat (6) and a guide sliding rod (7). The guide sliding rod (7) is installed on both sides of the protective shell (3). The two ends of the telescopic seat (6) are slidably connected to the guide sliding rod (7). The telescopic seat (6) is provided with a swing connection hole (8), and the other end of the swing arm (2) is inserted into the swing connection hole (8) and movably connected to the telescopic seat (6).

2. The telescopic dental box for a massager according to claim 1, characterized in that: The gear assembly includes a turbine (9), a first gear (10), a second gear (11), and a third gear (12). The side of the double-headed worm (5) is meshed with the turbine (9). A first connecting shaft (13) is provided at the center of one side of the turbine (9). The first gear (10) is fixedly connected through the center of the outer surface of the first connecting shaft (13). The first gear (10) is meshed with the second gear (11) above it. The second gear (11) is meshed with the third gear (12) above it. A transmission connecting shaft (15) is provided on the third gear (12). One end of the transmission connecting shaft (15) passes through the protective shell (3) and is connected to the swing arm (2).

3. The telescopic dental box for a massager according to claim 2, characterized in that: The swing arm (2) is L-shaped and includes a horizontal connecting part (16) and a vertical connecting part (17). One end of the vertical connecting part (17) is connected to the transmission connecting shaft (15), and the other end of the vertical connecting part (17) is connected to the horizontal connecting part (16). The other end of the horizontal connecting part (16) is inserted into the swing connecting hole (8) and movably connected to the telescopic seat (6).

4. The telescopic dental box for a massager according to claim 3, characterized in that: The swing arm (2) is provided with a limiting locking member (18). One end of the limiting locking member (18) is connected to the transverse connecting part (16), and the other end of the limiting locking member (18) passes through the swing connecting hole (8) and is movably connected to the telescopic seat (6).

5. The telescopic dental box for a massager according to claim 4, characterized in that: The telescopic seat (6) is shaped like a "7" and includes a telescopic horizontal part (19) and a telescopic vertical part (20). The telescopic horizontal part (19) is located above the protective shell (3), and the swing connection hole (8) is located on the telescopic vertical part (20).

6. The telescopic dental box for a massager according to claim 5, characterized in that: Both ends of the telescopic vertical part (20) are provided with guide connecting parts, and the guide connecting parts are provided with sliding holes. The guide connecting parts are inserted into the guide sliding rod (7) through the sliding holes.

7. The telescopic dental box for a massager according to claim 6, characterized in that: The protective shell (3) has sliding rod fixing parts (21) on both sides, and the guide sliding rod (7) is installed on the sliding rod fixing parts (21).

8. The telescopic dental box for a massager according to claim 2, characterized in that: The overall speed ratio of the double-headed worm (5) to the gear assembly is twenty.

9. The telescopic dental box for a massager according to claim 2, characterized in that: The overall speed ratio of the double-headed worm (5) to the gear assembly is thirty.

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