A waterpik

Abstract

The application relates to a water pick, which comprises an inner support front cover, an inner support rear cover, a motor, a gear set and a water pump assembly, and the inner support front cover and the inner support rear cover are detachably fixedly connected through a support screw, and the two are connected to form an installation chamber, the installation chamber is sequentially provided with the motor, the gear set and the water pump assembly along an axial direction, the gear set comprises a bevel gear and a crown gear which are mutually meshed and a central shaft, the bevel gear is assembled on an output shaft of the motor, the crown gear is rotatably assembled on the installation chamber through the central shaft, an eccentric wheel is further arranged outside the central shaft, the eccentric wheel is used for driving a connecting rod of the water pump assembly to move, the connecting rod is driven to move up and down through gear meshing, the noise of the core is reduced, and the service life is prolonged.

Description

Technical Field

[0001] This application belongs to the field of oral irrigator technology and relates to an oral irrigator. Background Technology

[0002] As a highly efficient oral hygiene tool, a water flosser uses high-pressure pulsed water to remove food debris and bacteria from between teeth and near the gum line. Traditional water flossers mostly use an electric motor to drive a water pump to generate water flow, and their power transmission part often relies on a gear transmission system to realize the conversion between motor speed and water pressure.

[0003] However, existing technologies suffer from vibration and impact during gear meshing, especially at high frequencies. The gears generate significant mechanical noise due to vibration during movement, resulting in a shorter lifespan for the water flosser and negatively impacting the user experience. Utility Model Content

[0004] In order to overcome the problems existing in the related technologies, this application aims to provide a water flosser to solve the problems existing in the prior art.

[0005] This application is achieved through the following technical solution.

[0006] This technical solution provides a dental flosser, including: Inner bracket front cover; The inner bracket rear cover and the inner bracket front cover are detachably and fixedly connected by bracket screws. After the two are connected, they form an installation chamber. The installation chamber is arranged with a motor, a gear set and a water pump assembly in sequence along the axial direction. The gear set includes meshing bevel gears and crown gears, as well as a central shaft. The bevel gears are mounted on the output shaft of the motor, and the crown gears are rotatably mounted in the mounting chamber via the central shaft. An eccentric wheel is also provided outside the central shaft, which is used to drive the connecting rod of the water pump assembly.

[0007] This technical solution uses bevel gears and crown gears for meshing transmission, and is equipped with an eccentric wheel to drive the connecting rod to reciprocate. By limiting the module, number of teeth, pressure angle and helix angle of the gears, the load-bearing capacity of the gears is improved, the operation is more stable, and the noise is lower and smoother.

[0008] This utility model is further configured to, The module of the bevel gear and the crown gear is a, where 0.35 < a < 0.6; The number of teeth of the bevel gear is b, where 8 < b < 12; The number of teeth of the crown gear is c, where 35 < c < 56; The pressure angle of the bevel gear and crown gear is d, where 12 degrees < d < 20 degrees; The helix angle of the bevel gear and crown gear is e, where 5 degrees < e < 40 degrees.

[0009] The present invention is further configured such that the front cover of the inner bracket is provided with a limiting frame, which is used to limit the position of the motor.

[0010] The present invention is further configured such that a gear seat is formed on the side of the limiting frame away from the motor, and the gear seat is used to limit the bevel gear.

[0011] The present invention is further configured such that an eccentric wheel is formed on the outer edge of the crown gear away from the inner bracket front cover, the eccentric wheel has a mounting hole concentric with the crown gear, and the eccentric wheel is mounted on the central shaft through the mounting hole.

[0012] The present invention is further configured such that the inner bracket rear cover has a through hole, and the water pump assembly is externally connected to the water inlet end cover through the through hole. The water inlet end cover is detachably and fixedly connected to the water pump assembly by fixing screws.

[0013] The present invention is further configured such that an assembly groove is provided on the outside of the water inlet end cover, and a first O-ring is fitted on the outside of the assembly groove, and the water inlet end cover achieves an interference seal with the water pump assembly through the first O-ring.

[0014] The present invention is further configured such that a circuit board is provided on the side of the inner bracket front cover facing away from the inner bracket rear cover, and the circuit board is used to control the start and stop of the motor.

[0015] The present invention is further configured such that the front cover of the inner bracket is provided with a settling groove, the settling groove being used to install the crown gear.

[0016] The present invention is further configured such that the output shaft of the motor is connected to a universal joint, the height of the end of the universal joint away from the motor is lower than the height of the output shaft, and the bevel gear is assembled on the universal joint so that the bevel gear meshes with the crown gear.

[0017] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0018] The above and other objects, features and advantages of this application will become more apparent from the more detailed description of exemplary embodiments thereof in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments thereof.

[0019] Figure 1 This is a schematic diagram of the structure shown in one embodiment of this application; Figure 2 This is an exploded view shown in one embodiment of this application; Figure 3 This is a schematic diagram of gear meshing shown in one embodiment of this application; Figure 4 This is a cross-sectional view shown in one embodiment of this application; Figure 5 This is a schematic diagram of a crown gear shown in one embodiment of this application; Figure 6 This is a schematic diagram of a bevel gear shown in one embodiment of this application.

[0020] Reference numerals in the attached diagram: 1. Fixing screw; 2. Water inlet end cap; 3. First O-ring; 4. Inner bracket rear cover; 5. Motor; 6. Bevel gear; 7. Crown gear; 71. Eccentric wheel; 8. Central shaft; 9. Water pump assembly; 10. Inner bracket front cover; 101. Limiting bracket; 11. Bracket screw; 12. Circuit board. Detailed Implementation

[0021] The technical solutions of some embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0022] The technical solutions of the embodiments of this application are described in detail below with reference to the accompanying drawings.

[0023] This embodiment discloses a dental flosser, such as Figures 1-6 As shown, it includes: 10mm inner bracket front cover; The inner bracket rear cover 4 and the inner bracket front cover 10 are detachably and fixedly connected by bracket screws 11. After the two are connected, they form an installation chamber. The installation chamber is arranged axially with a motor 5, a gear set and a water pump assembly 9. The gear set includes a bevel gear 6 and a crown gear 7 that mesh with each other, and a central shaft 8. The bevel gear 6 is mounted on the output shaft of the motor 5, and the crown gear 7 is rotatably mounted in the mounting chamber via the central shaft 8. An eccentric wheel 71 is also provided on the outside of the central shaft 8. The eccentric wheel 71 is used to drive the connecting rod of the water pump assembly 9.

[0024] It should be noted that the water flosser is existing technology and includes a water tank, battery, and nozzle. The central shaft 8 is located between the inner wall of the inner bracket rear cover 4 and the inner bracket front cover 10. An eccentric wheel 71 is mounted on the central shaft 8, and a connecting rod of the water pump assembly 8 is sleeved on the eccentric wheel 71 to drive the connecting rod through the motor 5.

[0025] By using bevel gear 6 in mesh with crown gear 7 for transmission, and with the addition of eccentric wheel 71 to drive the connecting rod to reciprocate, the load-bearing capacity of the gears is increased, the operation is smoother, and the noise is lower and softer by limiting the module, number of teeth, pressure angle and helix angle of the gears.

[0026] like Figures 1-6 As shown, The module of bevel gear 6 and crown gear 7 is a, where 0.35 < a < 0.6; The number of teeth of bevel gear 6 is b, where 8 < b < 12; The number of teeth on crown gear 7 is c, where 35 < c < 56; The pressure angle of bevel gear 6 and crown gear 7 is d, where 12 degrees < d < 20 degrees; The helix angle of bevel gear 6 and crown gear 7 is e, where 5 degrees < e < 40 degrees.

[0027] like Figure 2 As shown, the inner bracket front cover 10 is provided with a limiting frame 101, which is used to limit the position of the motor 5.

[0028] like Figure 2 As shown, the limiting bracket 101 extends axially to the side away from the motor 5 to form a gear seat, which is used to limit the bevel gear 6.

[0029] It should be noted that the position of the bevel gear 6 is restricted by the limit bracket 101 and cannot be shaken, thus avoiding the problem of noise caused by gear shaking.

[0030] like Figures 2-5 As shown, an eccentric wheel 71 is formed on the outer edge of the crown gear 7 away from the inner bracket front cover 10. The eccentric wheel 71 has a mounting hole concentric with the crown gear 7, and the eccentric wheel 71 is mounted on the central shaft 8 through the mounting hole.

[0031] It should be noted that the eccentric wheel 71 and the crown gear 7 are integrated, which can reduce the space occupied by the eccentric wheel and thus reduce the size of the water flosser.

[0032] like Figure 2 As shown, the inner bracket rear cover 4 has a through hole, and the water pump assembly 9 is connected to the water inlet end cover 2 through the through hole. The water inlet end cover 2 is detachably fixed to the water pump assembly 9 by fixing screws 1.

[0033] like Figure 2 As shown, the water inlet end cover 2 has an assembly groove on its outside, and a first O-ring 3 is fitted on the outside of the assembly groove. The water inlet end cover 2 achieves an interference seal with the water pump assembly 9 through the first O-ring 3.

[0034] like Figure 1 and Figure 2As shown, a circuit board 12 is provided on the side of the inner bracket front cover 10 facing away from the inner bracket rear cover 4. The circuit board 12 is used to control the opening and closing of the motor 5.

[0035] like Figure 2 As shown, the inner bracket front cover 10 is provided with a settling groove, which is used to install the crown gear 7.

[0036] like Figures 1-6 As shown, the output shaft of motor 5 is connected to a universal joint. The height of the end of the universal joint away from motor 5 is lower than the height of the output shaft. Bevel gear 6 is mounted on the universal joint so that bevel gear 6 meshes with crown gear 7.

[0037] It should be noted that the universal joint can change the position of the rotating shaft of motor 5 during transmission, allowing the crown gear 7 to be lowered relative to the bracket, thus reducing the position of the eccentric wheel 71 and reducing its space occupation. At the same time, the bevel gear 6 can mesh with the crown gear 7 to achieve transmission. Simultaneously, the limit bracket 101 can restrict the position of the universal joint to improve its rotational stability.

[0038] Working principle: The motor 5 drives the gear set to rotate, which in turn drives the connecting rod of the water pump assembly 8 to reciprocate, thereby driving the water flow. The gear set uses bevel gears 6 and crown gears 7. Their module, number of teeth, pressure angle, and helix angle are all set according to the parameters of the water flosser, which improves the load-bearing capacity of the gears, makes the operation more stable, and reduces noise. The limit bracket 101 is set to limit the position of the bevel gear 6, making it more stable during rotation, thereby avoiding the gear shaking during rotation and reducing noise.

[0039] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A dental flosser, characterized in that, include: Inner bracket front cover (10); The inner support rear cover (4) and the inner support front cover (10) are detachably fixedly connected by support screws (11). After the two are connected, they form an installation chamber. The installation chamber is provided with a motor (5), a gear set and a water pump assembly (9) in sequence along the axial direction. The gear set includes a bevel gear (6) and a crown gear (7) that mesh with each other, and a central shaft (8). The bevel gear (6) is mounted on the output shaft of the motor (5), and the crown gear (7) is rotatably mounted in the mounting chamber via the central shaft (8). An eccentric wheel (71) is also provided outside the central shaft (8), which is used to drive the connecting rod of the water pump assembly (9) to move.

2. The oral irrigator according to claim 1, characterized in that, The module of the bevel gear (6) and crown gear (7) is a, 0.35 < a < 0.6; The number of teeth of the bevel gear (6) is b, where 8 < b < 12; The number of teeth of the crown gear (7) is c, where 35 < c < 56; The pressure angle of the bevel gear (6) and crown gear (7) is d, 12 degrees < d < 20 degrees; The helix angle of the bevel gear (6) and crown gear (7) is e, where 5 degrees < e < 40 degrees.

3. The oral irrigator according to claim 1, characterized in that, The inner support front cover (10) is provided with a limiting frame (101), which is used to limit the position of the motor (5).

4. The oral irrigator according to claim 3, characterized in that, The limiting frame (101) extends axially to the side away from the motor (5) to form a gear seat, which is used to limit the bevel gear (6).

5. The oral irrigator according to claim 1, characterized in that, The outer edge of the crown gear (7) away from the inner bracket front cover (10) forms an eccentric wheel (71), the eccentric wheel (71) has a mounting hole concentric with the crown gear (7), and the eccentric wheel (71) is mounted on the central shaft (8) through the mounting hole.

6. The oral irrigator according to claim 1, characterized in that, The inner bracket rear cover (4) has a through hole, and the water pump assembly (9) is connected to the water inlet end cover (2) through the through hole. The water inlet end cover (2) is detachably fixed to the water pump assembly (9) by fixing screws (1).

7. The oral irrigator according to claim 6, characterized in that, The water inlet end cap (2) is provided with an assembly groove on the outside, and a first O-ring (3) is fitted on the outside of the assembly groove. The water inlet end cap (2) achieves an interference seal with the water pump assembly (9) through the first O-ring (3).

8. The oral irrigator according to claim 1, characterized in that, The inner bracket front cover (10) has a circuit board (12) on the side opposite to the inner bracket rear cover (4), and the circuit board (12) is used to control the opening and closing of the motor (5).

9. The oral irrigator according to claim 1, characterized in that, The inner support front cover (10) is provided with a settling groove, which is used to install the crown gear (7).

10. The oral irrigator according to claim 9, characterized in that, The output shaft of the motor (5) is connected to a universal joint. The height of the end of the universal joint away from the motor (5) is lower than the height of the output shaft. The bevel gear (6) is assembled on the universal joint so that the bevel gear (6) meshes with the crown gear (7).

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