Motor shaft conductive connection structure and electric toothbrush

Abstract

The utility model provides a kind of motor shaft electrically conductive connection structure, including motor, the one end of motor is equipped with protective mounting seat, motor has conductive motor shaft, protective mounting seat is equipped with the placement groove for placing conductive motor shaft, protective mounting seat is also equipped with the electrically-conductive clamp that is inserted into placement groove from protective mounting seat outer and is clamped on the outer wall of conductive motor shaft, the two sides of electrically-conductive clamp are equipped with the elastic clamp arm clamped on the outer wall of conductive motor shaft, and the fitting part that is formed on elastic clamp arm is fitted with the outer wall of conductive motor shaft.Compared with prior art, the utility model provides a kind of motor shaft electrically conductive connection structure, electrically-conductive clamp is inserted into placement groove from protective mounting seat outer, is clamped on the conductive motor shaft in protective mounting seat, and the fitting part on elastic clamp arm is fitted with the outer wall of conductive motor shaft, utilizes electrically-conductive clamp to carry out transmission current, avoids direct from power supply lead-out conductor and brush head connection, simplifies internal structure, reduces production cost.

Description

Technical Field

[0001] This utility model relates to the field of electric toothbrushes, and in particular to a conductive connection structure for a motor shaft and an electric toothbrush. Background Technology

[0002] Electric toothbrushes have gradually replaced traditional manual toothbrushes and become an important player in the oral care product market. They use the rapid rotation or vibration of an electric motor to generate high-frequency vibrations in the brush head, instantly breaking down toothpaste into fine foam that deeply cleans between teeth, making teeth cleaner. However, with the improvement of people's health awareness and living standards, simple cleaning is no longer enough to meet people's needs. Therefore, it is necessary to design multifunctional electric toothbrushes to provide more comprehensive oral care.

[0003] With the development of technology, electric toothbrushes have been widely used in people's lives. However, in recent years, most electric toothbrushes on the market have adopted negative ion technology. This technology requires the brush head of the electric toothbrush to be conductive. To achieve this, a wire is usually led from the power source inside the electric toothbrush to the brush head. However, the internal circuitry of an electric toothbrush is very complex, which may affect the normal operation of the electric toothbrush. Furthermore, implementing this circuitry places strict requirements on the production technology, which increases production costs. Utility Model Content

[0004] To address the aforementioned issues, this invention provides a conductive connection structure for a motor shaft. A conductive clamp is inserted from outside the protective mounting base into the placement groove, and the conductive motor shaft inside the protective mounting base transmits current. This avoids directly connecting the power supply wire to the brush head, simplifies the internal structure, and reduces production costs.

[0005] The technical solution adopted in this utility model is as follows: A conductive connection structure for a motor shaft includes a motor, a protective mounting base is installed at one end of the motor, the motor has a conductive motor shaft, the protective mounting base is provided with a placement groove for placing the conductive motor shaft, a conductive clamp is also installed on the protective mounting base, and elastic clamping arms are respectively provided on both sides of the conductive clamp to clamp the outer wall of the conductive motor shaft, and the elastic clamping arms are formed with fitting parts that fit against the outer wall of the conductive motor shaft.

[0006] Preferably, the fitting part on each elastic clamping arm is an arc-shaped groove that wraps around the outer wall of the conductive motor shaft, and the end of the elastic clamping arm is bent outward to form a guide end; the guide ends of the elastic clamping arms on both sides of the conductive clamp form a trumpet-shaped opening.

[0007] Preferably, the conductive clamp includes a base, and at least one elastic clamping arm is provided on each of the two sides of the base.

[0008] More preferably, the elastic clamping arms on both sides of the base are arranged in a one-to-one correspondence; or, the elastic clamping arms on both sides of the base are arranged in a staggered manner.

[0009] Preferably, the protective mounting base includes a mounting body with a placement groove inside. One end of the placement groove has an opening for inserting the conductive motor shaft. The mounting body is fitted with a cover plate with a mounting position corresponding to the conductive clamp. The mounting position has an insertion port corresponding to the elastic clamping arms on both sides. The elastic clamping arms on both sides of the conductive clamp are inserted into the placement groove through the insertion port and clamped on the outer wall of the conductive motor shaft.

[0010] More preferably, the front end and / or rear end of the conductive clip further extend to form a mounting positioning arm; the mounting position is provided with a positioning port that corresponds to the mounting positioning arm and is used for insertion of the mounting positioning arm.

[0011] More preferably, three conductive clips are clamped on the outer wall of the conductive motor shaft; and three corresponding mounting positions are provided on the cover plate.

[0012] This utility model also provides an electric toothbrush, which has a conductive connection structure for the motor shaft inside.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model provides a conductive connection structure for a motor shaft. The conductive clamp is inserted into the placement groove from outside the protective mounting base and clamped on the conductive motor shaft inside the protective mounting base. The fitting part on the elastic clamp arm fits against the outer wall of the conductive motor shaft. The conductive clamp is used to transmit current, avoiding the direct connection of the wire from the power supply to the brush head, simplifying the internal structure and reducing production costs. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a conductive connection structure for a motor shaft provided by this utility model.

[0015] Figure 2 An exploded view of a conductive connection structure for a motor shaft provided by this utility model.

[0016] Figure 3 This is a schematic diagram of a conductive clamp on the outer wall of a conductive motor shaft in a conductive connection structure provided by this utility model.

[0017] Figure 4 This is a schematic diagram of a conductive clamp in a conductive connection structure for a motor shaft provided by this utility model.

[0018] Figure 5 This utility model provides a schematic diagram of a protective mounting base in a conductive connection structure for a motor shaft. Detailed Implementation

[0019] The preferred embodiments of this utility model will be described in detail with reference to the accompanying drawings.

[0020] Figures 1 to 5This is a preferred embodiment of a conductive connection structure for a motor shaft provided by this utility model. For example... Figures 1 to 5 As shown, the conductive connection structure of the motor shaft includes a motor 10, one end of which is equipped with a protective mounting base 30. The motor 10 has a conductive motor shaft 11. The protective mounting base 30 has a placement groove 31 for placing the conductive motor shaft. A conductive clamp 20 is also installed on the protective mounting base 30. Elastic clamping arms 21 are respectively provided on both sides of the conductive clamp 20, clamping against the outer wall of the conductive motor shaft. The elastic clamping arms 21 have fitting portions 211 that conform to the outer wall of the conductive motor shaft. During installation, the protective mounting base 30 is first set... A conductive motor shaft 11 is positioned at one end of the motor 10 and is located within a placement groove 31. A conductive clamp 20 is inserted from outside the protective mounting base 30 into the placement groove 31 and clamps onto the outer wall of the conductive motor shaft 11. The contact portion 211 on the elastic clamp arm 21 is in contact with the outer wall of the conductive motor shaft. The conductive clamp 20 is connected to a power source, thereby guiding current to the conductive motor shaft 11 through the conductive clamp 20. Current can be transmitted to the other end of the conductive motor shaft 11, thus avoiding the direct connection of a wire from the power source to the brush head, simplifying the internal structure and reducing production costs. The motor 10 drives the conductive motor shaft 11 to move. The conductive motor shaft 11 includes a motor shaft body and a conductive core disposed within the motor shaft body. The conductive core moves synchronously with the motor shaft body.

[0021] like Figure 4 As shown, the fitting part 211 on each elastic clamping arm 21 is an arc-shaped groove that fits the outer wall of the conductive motor shaft 11, and the end of each elastic clamping arm 21 is bent outward to form a guide end 212; the guide ends 212 in the elastic clamping arms 21 on both sides of the conductive clamp 20 form a trumpet-shaped opening; when the conductive clamp 20 is clamped on the outer wall of the conductive motor shaft 11, the conductive motor shaft 11 is first placed in the trumpet-shaped opening of the conductive clamp 20, and as the conductive clamp is pressed down, the conductive motor shaft 11 is gradually guided to squeeze into the space between the elastic clamping arms 21 on both sides in the radial direction until the outer wall of the conductive motor shaft 11 enters the arc-shaped groove of the elastic clamping arm 21. The groove wall of the arc-shaped groove fits the outer wall of the conductive motor shaft 11 to avoid loose connection or open circuit and ensure stable current transmission.

[0022] The conductive clamp 20 includes a base 22, and at least one elastic clamping arm 21 is provided on each of the two sides of the base 22. The elastic clamping arms 21 on both sides of the base 22 can be aligned one-to-one; or, the elastic clamping arms 21 on both sides of the base 22 can be staggered. In a preferred embodiment, the base 22 is provided with two elastic clamping arms 21 on each side, with a gap between the two elastic clamping arms 21 on the same side. The elastic clamping arms 21 on both sides are arranged in a one-to-one correspondence to form two sets of oppositely arranged elastic clamping arm groups. The arc-shaped grooves of the two elastic clamping arms 21 in each set of elastic clamping arms form clamping grooves on both sides of the outer wall of the conductive motor shaft 11. The two guide ends 212 are V-shaped, forming a trumpet-shaped opening. When the conductive clamp 20 is clamped on the outer wall of the conductive motor shaft 11 at the corresponding position, the two guide ends 212 in each pair of elastic clamping arm groups first contact the outer wall of the conductive motor shaft 11, guiding the conductive motor shaft 11 into each pair of elastic clamping arm groups, opening the two elastic clamping arms 21, until the conductive motor shaft 11 is in the elastic clamping grooves formed by the two arc-shaped grooves, so that the outer wall of the electric motor shaft 11 is in contact with the elastic clamping arms 32.

[0023] like Figure 1 , Figure 2 and Figure 5 As shown, the protective mounting base 30 includes a mounting body 31, with a placement groove 311 inside. One end of the placement groove 311 has an opening 312 for inserting the conductive motor shaft. The mounting body 31 is fitted with a cover plate 32, which has a mounting position 33. The mounting position 33 has an insertion slot 331 corresponding to the elastic clamping arms 21 on both sides. The elastic clamping arms 21 on both sides of the conductive clamp 20 are inserted into the placement groove 311 through the insertion slot 331 and clamped on the outer wall of the conductive motor shaft 11. The cover plate 32 can be fastened to the mounting base 31 with bolts to prevent the cover plate 32 from falling off arbitrarily.

[0024] Multiple conductive clips 20, such as three or four, can be clamped on the outer wall of the conductive motor shaft 11, as needed. Figure 1 As shown, three conductive clips 20 are clamped on the outer wall of the conductive motor shaft 11; correspondingly, three mounting positions 33 are provided on the cover plate 32 of the protective mounting base 30.

[0025] The front end and / or rear end of the conductive clip 20 further extend to form a mounting positioning arm 23; the mounting position 33 is provided with a positioning port 332 corresponding to the mounting positioning arm 23 for insertion of the mounting positioning arm 23. When the elastic clamping arms 21 on both sides of the conductive clip 20 extend into the placement groove 311 and clamp onto the outer wall of the conductive motor shaft 11, the mounting positioning arm 23 is simultaneously inserted into the positioning port 332, thereby positioning the conductive clip 20 and preventing the conductive clip 20 from shifting. Figure 3As shown, the conductive clamp 20 has a mounting and positioning arm 23 at its front end and two mounting and positioning arms 23 at its rear end; correspondingly, each mounting position 33 on the cover plate 32 has three positioning holes 332, and the three mounting hole positioning holes 332 correspond one-to-one with the three mounting and positioning arms 23.

[0026] This utility model also provides an electric toothbrush. The handle of the electric toothbrush is provided with a conductive connection structure for a motor shaft. The motor 10 and the protective mounting base 30 are disposed inside the handle. The conductive clip 20 is inserted into the placement groove 31 in the protective mounting base 30 and clamped on the outer wall of the conductive motor shaft 11. The fitting part 211 on the elastic clamp arm 21 fits against the outer wall of the conductive motor shaft. The conductive clip 20 is connected to the power supply and guides the current to the conductive motor shaft 11. It can transmit the current to the other end of the conductive motor shaft 11, which is convenient for connecting to the brush head in the electric toothbrush. This avoids directly connecting the wire from the power supply to the brush head, simplifies the internal structure, and reduces production costs.

[0027] In summary, the technical solution of this utility model can fully and effectively achieve the aforementioned objectives. Furthermore, the structure and functional principles of this utility model have been fully verified in the embodiments, achieving the expected effects and objectives. Without departing from the principles and essence of this utility model, various changes or modifications can be made to the embodiments. Therefore, this utility model includes all substitutions within the scope mentioned in the patent application claims, and any equivalent changes made within the scope of this patent application are within the scope of the patent application.

Claims

1. A conductive connection structure for a motor shaft, comprising a motor, characterized in that, A protective mounting base is installed at one end of the motor. The motor has a conductive motor shaft. The protective mounting base is provided with a placement groove for placing the conductive motor shaft. A conductive clamp is also installed on the protective mounting base, which is inserted into the placement groove from outside the protective mounting base and clamped on the outer wall of the conductive motor shaft. The conductive clamp is provided with elastic clamping arms on both sides, which are clamped on the outer wall of the conductive motor shaft. The elastic clamping arms have a fitting part that fits against the outer wall of the conductive motor shaft.

2. The motor shaft conductive connection structure according to claim 1, characterized in that: The fitting part on each elastic clamp arm is an arc-shaped groove that wraps around the outer wall of the conductive motor shaft, and the end of the elastic clamp arm is bent outward to form a guide end; the guide ends of the elastic clamp arms on both sides of the conductive clamp form a trumpet-shaped opening.

3. The motor shaft conductive connection structure according to claim 2, characterized in that: The conductive clamp includes a base, and at least one elastic clamping arm is provided on each of the two sides of the base.

4. The motor shaft conductive connection structure according to claim 3, characterized in that: The elastic clamping arms on both sides of the base are arranged in a one-to-one correspondence; or, the elastic clamping arms on both sides of the base are arranged in a staggered correspondence.

5. The motor shaft conductive connection structure according to claim 1, characterized in that: The protective mounting base includes a mounting body with a placement groove inside. One end of the placement groove has an opening for inserting the conductive motor shaft. The mounting body is fitted with a cover plate with a mounting position corresponding to the conductive clamp. The mounting position has an insertion port corresponding to the elastic clamping arms on both sides. The elastic clamping arms on both sides of the conductive clamp are inserted into the placement groove through the insertion port and clamped on the outer wall of the conductive motor shaft.

6. The motor shaft conductive connection structure according to claim 5, characterized in that: The front end and / or rear end of the conductive clip further extend to form a mounting positioning arm; the mounting position is provided with a positioning port that corresponds to the mounting positioning arm for insertion of the mounting positioning arm.

7. The motor shaft conductive connection structure according to claim 5, characterized in that: The outer wall of the conductive motor shaft is clamped with three conductive clips; the cover plate is provided with three corresponding mounting positions.

8. An electric toothbrush, characterized in that, The electric toothbrush is provided with a motor shaft conductive connection structure as described in any one of claims 1 to 7.

Images