Steel shaft assembly

Abstract

The utility model discloses a steel shaft assembly which comprises a main steel shaft, a sensor installation position is milled on the top of the main steel shaft, a brush head connecting shaft integrally formed with the main steel shaft is arranged on the left side of the main steel shaft, a synchronous tangent plane is milled on the top of the brush head connecting shaft, and a sealing piece clamping position is ground on the left side of the surface of the main steel shaft. A transmission shaft integrally formed with the main steel shaft is arranged at the right end of the main steel shaft, and a second synchronous tangent plane is ground on the top of the transmission shaft. The main steel shaft and the brush head connecting shaft are matched for use, the brush head is installed and fixed, meanwhile, the transmission shaft and the second synchronous tangent plane are matched for use, a hollow motor can be matched for driving the main steel shaft to rotate, an adaptive installation position is provided for a pressure sensor through arrangement of a sensor installation position, and the pressure sensor can be installed conveniently. Therefore, the pressure state of the brush head connecting shaft in the using process is sensed, and the purposes that the sensor is convenient to install and the overall milling forming structure is stable can be achieved.

Description

Technical Field

[0001] This utility model belongs to the field of electric toothbrush component processing technology, and in particular relates to a steel shaft assembly. Background Technology

[0002] The steel shaft of an electric toothbrush is a key component. It is usually made of stainless steel or other high-strength alloy materials. Its main function is to transmit the power generated by the motor to the toothbrush head, thereby achieving high-frequency vibration or rotation of the brush head to clean teeth.

[0003] The steel shaft assembly is a key component of an electric toothbrush. Many steel shaft assemblies cannot provide suitable and stable mounting positions for components such as sensors, and cannot meet the assembly requirements of automatically adjusting the vibration amplitude based on the pressure of tooth contact during use. Therefore, a steel shaft assembly is needed that uses turning, milling, and grinding to process the entire steel shaft in one go, achieving the machining of multiple grooves, bevels, and related component positioning, so that the entire steel shaft is integrally formed, stress-enhanced, and has subsequent sensor mounting positions to meet the subsequent electric toothbrush assembly requirements. Utility Model Content

[0004] The purpose of this utility model is to provide a steel shaft assembly that uses turning, milling and grinding to process the entire steel shaft in one go, realizing the processing of multiple grooves, inclined surfaces and related component positioning, so that the entire steel shaft is integrally formed, the stress is enhanced, and a subsequent sensor installation position is provided to meet the subsequent electric toothbrush assembly requirements, thereby solving the above-mentioned technical problems.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A steel shaft assembly includes a main steel shaft: a sensor mounting position is milled on the top of the main steel shaft, a brush head connecting shaft integrally formed therewith is provided on the left side of the main steel shaft, a synchronous cross-section is milled on the top of the brush head connecting shaft, a sealing element locking position is ground on the left side of the surface of the main steel shaft, and a transmission shaft integrally formed therewith is provided on the right end of the main steel shaft, a second synchronous cross-section is ground on the top of the transmission shaft.

[0006] Preferably, the width of the sensor mounting position is 10mm and the milling depth is 2.3mm.

[0007] Preferably, the bottom of the brush head connecting shaft is machined with an arc-shaped groove, and the left side of the inner cavity of the arc-shaped groove is ground with an arc-shaped surface.

[0008] Preferably, a first bearing is installed on the right side of the main steel shaft surface, and a stop is fixedly connected to the right side of the sensor mounting position surface, with the first bearing interference-fitted to the surface of the stop.

[0009] Preferably, the right end of the drive shaft is provided with a support shaft integrally formed therewith, and a second bearing is interference-fitted to the surface of the support shaft.

[0010] The beneficial effects of this utility model are:

[0011] 1. This utility model uses the main steel shaft and the brush head connecting shaft to install and fix the brush head. At the same time, with the cooperation of the transmission shaft and the second synchronous cutting surface, the hollow motor can drive the main steel shaft to rotate. By setting the sensor mounting position, a suitable installation position is provided for the pressure sensor, so as to sense the pressure state of the brush head connecting shaft during use. This achieves the purpose of facilitating sensor installation and stabilizing the overall milled structure.

[0012] 2. This utility model provides a locking position for subsequent brush head installation by using the combination of arc-shaped groove and arc-shaped surface, so that the elastic locking component of the brush head can be stably locked in the inner cavity of the arc-shaped groove, thereby improving the stability of the brush head after installation and during use.

[0013] 3. This utility model provides support for the main steel shaft through the combined use of the first bearing, the stop, the support shaft, and the second bearing, enabling the main steel shaft to be stably installed inside the electric toothbrush housing. At the same time, with the combined use of the first and second bearings, it can ensure that the main steel shaft can smoothly maintain a high amplitude swing inside the electric toothbrush housing. Attached Figure Description

[0014] in:

[0015] Figure 1 This is a perspective view of one embodiment of the present utility model;

[0016] Figure 2 This is a three-dimensional schematic diagram of the main steel shaft and the brush head connecting shaft according to an embodiment of the present invention;

[0017] Figure 3 This is a three-dimensional schematic diagram of the drive shaft and support shaft according to one embodiment of the present invention.

[0018] The attached diagram lists the components represented by each number as follows:

[0019] 1. Main steel shaft, 2. Sensor mounting position, 3. Brush head connecting shaft, 4. Synchronous section, 5. Arc-shaped groove, 6. Arc-shaped surface, 7. Seal slot, 8. First bearing, 9. Stop, 10. Drive shaft, 11. Second synchronous section, 12. Support shaft, 13. Second bearing. Detailed Implementation

[0020] In the following description, embodiments of the steel shaft assembly of the present invention will be described with reference to the accompanying drawings.

[0021] Figure 1-3 This invention illustrates a steel shaft assembly according to an embodiment of the present invention, comprising a main steel shaft 1. The top of the main steel shaft 1 is milled with a sensor mounting position 2, the width of which is 10mm and the milling depth is 2.3mm. A brush head connecting shaft 3 integrally formed with the main steel shaft 1 is disposed on its left side. An arc-shaped groove 5 is machined at the bottom of the brush head connecting shaft 3, and an arc-shaped surface 6 is ground on the left side of the inner cavity of the arc-shaped groove 5. The arc-shaped groove 5 and the arc-shaped surface 6 work together to provide a locking position for subsequent brush head installation, allowing the elastic locking element of the brush head to stably engage within the inner cavity of the arc-shaped groove 5, thereby improving the stability of the brush head after installation and during use. A synchronous cutting surface 4 is milled on the top of the brush head connecting shaft 3, and a sealing element locking position 7 is ground on the left side of the surface of the main steel shaft 1. The right end is provided with a drive shaft 10 integrally formed with it. A first bearing 8 is installed on the right side of the surface of the main steel shaft 1. A stop 9 is fixedly connected to the right side of the surface of the sensor mounting position 2. The first bearing 8 is interference-fitted to the surface of the stop 9. The right end of the drive shaft 10 is provided with a support shaft 12 integrally formed with it. A second bearing 13 is interference-fitted to the surface of the support shaft 12. Through the cooperation of the first bearing 8, the stop 9, the support shaft 12 and the second bearing 13, the main steel shaft 1 is supported, so that the main steel shaft 1 can be stably installed inside the electric toothbrush housing. At the same time, with the cooperation of the first bearing 8 and the second bearing 13, the main steel shaft 1 can be smoothly maintained to maintain a high amplitude swing inside the electric toothbrush housing. The top of the drive shaft 10 is ground with a second synchronous cut surface 11.

[0022] Working Principle: When using this invention, the user uses the first bearing 8, the stop 9, the support shaft 12, and the second bearing 13 to install and support the main steel shaft 1, ensuring its stable installation inside the electric toothbrush housing. This allows the main steel shaft 1 to rotate while maintaining stability. The brush head is installed using the brush head connecting shaft 3 and the synchronous cutting surface 4. The arc-shaped groove 5 and the arc-shaped surface 6 provide a locking position for the brush head's elastic clip, ensuring the stability of the brush head installation. The sealing ring is positioned and installed using the sealing clip 7. The sensor mounting position 2 provides a suitable installation position for the electric toothbrush's pressure sensor. Simultaneously, the use of the drive shaft 10 and the second synchronous cutting surface 11 allows the hollow motor to drive the main steel shaft 1 to rotate, thereby causing the main steel shaft 1 and the brush head to vibrate at high amplitude.

[0023] In summary, this steel shaft assembly, through the cooperation of the main steel shaft 1 and the brush head connecting shaft 3, installs and fixes the brush head. At the same time, with the cooperation of the transmission shaft 10 and the second synchronous cutting surface 11, it can drive the main steel shaft 1 to rotate in conjunction with the hollow motor. Through the setting of the sensor mounting position 2, a suitable mounting position is provided for the pressure sensor, thereby sensing the pressure state of the brush head connecting shaft 3 during use. This achieves the purpose of facilitating sensor installation and ensuring the stability of the overall milled structure.

Claims

1. A steel axle assembly characterized by, The utility model provides a sensor installation position (2) is milled to the top of main axle (1), the left side of main axle (1) is provided with the brush head connecting shaft (3) integrally formed with it, the top of brush head connecting shaft (3) is milled with synchronous tangent plane (4), the left side of main axle (1) surface is ground with sealing element stop (7), the right end of main axle (1) is provided with the drive shaft (10) integrally formed with it, the top of drive shaft (10) is ground with second synchronous tangent plane (11).

2. A steel axle assembly as defined in claim 1, wherein The width of the sensor installation position (2) is 10mm, and the milling depth is 2.3mm.

3. A steel axle assembly as defined in claim 2 wherein, The bottom of the brush head connecting shaft (3) is turned with an arc clamping groove (5), and the left side of the inner cavity of the arc clamping groove (5) is ground with an arc surface (6).

4. A steel axle assembly as defined in claim 3, wherein The right side of the surface of the main axle (1) is provided with a first bearing (8), the right side of the surface of the sensor installation position (2) is fixedly connected with a stop piece (9), and the first bearing (8) is fixed on the surface of the stop piece (9) in an interference manner.

5. A steel axle assembly as defined in claim 4, wherein, The right end of the drive shaft (10) is provided with a support shaft (12) integrally formed therewith, and the surface of the support shaft (12) is fixed with a second bearing (13) in an interference manner.

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