Electric toothbrush

Abstract

The utility model discloses an electric toothbrush which comprises a machine body, and the machine body comprises a machine body shell and a machine core arranged in the machine body shell. The machine core comprises a spring and a shaft rod used for driving the brush handle to rotate, the spring surrounds the shaft rod, one end of the spring is provided with a connecting section formed by bending, the shaft rod is provided with a first groove, one end of the spring is connected with the machine body shell, and the other end of the spring is connected with the first groove through the connecting section. The first groove is formed in the shaft rod, one end of the spring is bent to form the connecting section, the connecting section is connected with the first groove, and when the shaft rod vibrates, the spring transmits vibration generated by the shaft rod through the connecting section, so that the spring is elastically contracted or elastically reset under the influence of vibration; therefore, the influence of vibration transmitted by the shaft rod on the spring is counteracted, and noise and vibration sense generated by the amplitude of high-frequency vibration transmitted to the machine body shell are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of electric toothbrushes, in particular to an electric toothbrush. Background Art

[0002] As people pay more and more attention to the health of their teeth, sonic electric toothbrushes are widely used in electric toothbrushes. Since sonic electric toothbrushes have good teeth cleaning effects and high automation, they have an irreplaceable market position in the existing market.

[0003] The sonic electric toothbrushes currently on the market have the following problems: existing electric toothbrushes are equipped with a motor and a shaft inside. When in operation, the motor drives the shaft to vibrate and rotate by generating a changing magnetic field, thereby driving the brush head connected to the shaft to vibrate and rotate; but when the shaft vibrates, the vibration is easily transmitted to the user's hand through the body, increasing the vibration sensation in the user's hand and making the handle part noisy, thereby reducing the user experience. Utility Model Content

[0004] The main purpose of the utility model is to provide an electric toothbrush, aiming to optimize the design of the structure of the shaft and the spring, so as to reduce the vibration and noise generated by the vibration of the shaft being transmitted to the body.

[0005] To achieve the above-mentioned purpose, the utility model proposes an electric toothbrush, including a body, wherein the body includes a body shell and a movement arranged in the body shell; the movement includes a spring and a shaft rod for driving the brush handle to rotate, the spring is wrapped around the shaft rod, one end of the spring has a connecting section formed by a bend, the shaft rod has a first groove, one end of the spring is connected to the body shell, and the other end of the spring is connected to the first groove through the connecting section.

[0006] In one embodiment, the movement further includes an adjusting member disposed in the body shell, the adjusting member is connected to the spring, and the adjusting member is sleeved on the shaft.

[0007] In one embodiment, the movement also includes a rear bearing seat connected to the shaft, the rear bearing seat is connected to the adjusting member, the rear bearing seat is provided with a first limiting groove, the adjusting member is provided with a protrusion matching the first limiting groove, and when the shaft rotates, the protrusion moves in the first limiting groove.

[0008] In one embodiment, a through hole is provided on a side of the rear bearing seat close to the first limiting groove, and a second limiting groove is provided on a side of the adjusting member close to the protrusion. The adjusting member is connected to the rear bearing seat by a bolt passing through the through hole and the second limiting groove, and when the protrusion moves in the first limiting groove, the bolt moves in the second limiting groove.

[0009] In one embodiment, the body shell further includes a first shell for protecting the movement, the first shell is disposed in the body shell, and the movement is disposed in the first shell.

[0010] In one embodiment, the body shell further includes a second shell, a snap hook is provided on one side of the second shell, a second groove is provided on a side of the first shell away from the brush head decorative ring, and the snap hook is connected to the second groove.

[0011] In one embodiment, the electric toothbrush further includes a brush head decorative ring and the brush handle, wherein the brush head decorative ring and the brush handle are integrally formed, and the shaft passes through the body shell and is connected to the brush head decorative ring.

[0012] In one embodiment, the electric toothbrush further includes a sealing ring, and a side of the body shell close to the brush head decorative ring has an opening, and the sealing ring is connected to the opening of the body shell, and the sealing ring is used to seal the opening and reduce the noise generated by the rotation of the shaft.

[0013] In one embodiment, the electric toothbrush further includes a bottom cover connected to the body shell and a charging coil frame for winding a coil, and the charging coil is mounted in the bottom cover.

[0014] In one of the embodiments, a waterproof ring is provided at the connection between the bottom cover and the body shell, and the waterproof ring is used to seal the connection between the bottom cover and the body shell.

[0015] The technical solution of the utility model is to set a first groove on the shaft and bend one end of the spring to form a connecting section, and to set the connecting section to connect with the first groove, so that the spring has a larger contact area with the shaft than the existing spring. When the shaft vibrates, the spring transmits the vibration generated by the shaft through the connecting section, so that the spring is affected by the vibration and elastically contracts or elastically resets, thereby offsetting the vibration of the spring transmitted by the shaft, thereby reducing the noise and vibration generated by the amplitude of the high-frequency vibration transmitted to the fuselage shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0017] Figure 1 This is an exploded schematic diagram of an embodiment of the electric toothbrush of the utility model;

[0018] Figure 2 for Figure 1 A cross-sectional view of an electric toothbrush;

[0019] Figure 3 for Figure 1 Schematic diagram of the connection between the middle shaft rod, spring, adjustment member and rear bearing seat;

[0020] Figure 4 It is a structural schematic diagram of the adjusting member and the rear bearing seat of the utility model.

[0021] Description of Figure Numbers:

[0022] 10-body, 20-movement, 21-axis, 211-first groove, 22-spring, 221-connecting section, 23-adjusting member, 231-protrusion, 232-second limiting groove, 24-rear bearing seat, 241-first limiting groove, 242-through hole, 25-first shell, 251 second groove, 26-second shell, 261-hooking hook, 30-brush head decorative ring, 31-brush handle, 40-sealing ring, 50-bottom cover, 51-charging coil frame, 52-waterproof ring, 60-iron sheet, 61-magnet, 62-driving section, 621-through groove, 622-concave surface, 63-silicon steel sheet, 631-accommodating groove, 64-power supply member.

[0023] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0024] 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.

[0025] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0026] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0027] The sonic electric toothbrushes currently on the market have the following problems: when the shaft vibrates, the vibration is easily transmitted to the user's hand through the body, which increases the vibration sensation of the user's hand and makes the handle part noisy, thereby reducing the user experience. Therefore, the present application provides an electric toothbrush, which is provided with a first groove 211 on the shaft 21 and a connecting section 221 is formed by bending one end of the spring 22. The connecting section 221 is connected to the first groove 211, so that the spring 22 increases the contact area with the shaft 21 compared with the existing spring. When the shaft 21 vibrates, the spring 22 transmits the vibration generated by the shaft 21 through the connecting section 221, so that the spring 22 is affected by the vibration and elastically contracts or elastically resets, thereby offsetting the vibration of the spring 22 transmitted by the shaft 21, thereby reducing the noise and vibration sensation generated by the amplitude of the high-frequency vibration transmitted to the body shell.

[0028] like Figure 1 and Figure 2 As shown, the electric toothbrush includes a body 10, wherein the body 10 includes a body shell and a movement 20 arranged in the body shell; the movement 20 includes a spring 22 and a shaft 21 for driving the brush handle 31 to rotate, the spring 22 is wrapped around the shaft 21, one end of the spring 22 has a connecting section 221 formed by a bend, the shaft 21 has a first groove 211, one end of the spring 22 is connected to the body shell, and the other end of the spring 22 is connected to the first groove 211 through the connecting section 221.

[0029] Specifically, in this embodiment, the movement 20 includes a spring 22 and a shaft 21 for driving the brush handle 31 to rotate and vibrate, and one end of the spring 22 is connected to the body shell to fix the spring 22 in the body shell. By setting a first groove 211 for connecting the spring 22 on the shaft 21 as a vibration source, one end of the spring 22 has a connecting section 221 formed by bending, and the connecting section 221 matches the first groove 211, so that the other end of the spring 22 can be connected to the first groove 211 through the connecting section 221, and then the spring 22 is wrapped around the outer periphery of the shaft 21, thereby increasing the contact area between the spring 22 and the shaft 21, so that the spring 22 can better receive the vibration transmitted by the shaft 21. Therefore, the present application can transmit the vibration of the shaft 21 away from the brush head when it is in operation to the spring 22 through the connecting section 221 provided on the spring 22 and the first groove 211 provided on the shaft 21. The spring 22 is affected by the vibration and its own elastic contraction and elastic reset characteristics eliminate the vibration transmitted to the spring 22 by the shaft 21, thereby reducing the vibration and noise of the shaft 21 away from the brush head when it is in operation. Therefore, when the user is using it, even if he holds the tail end of the body shell and brushes his teeth, he will not feel a large vibration transmitted from the shaft 21 to the body shell, and at the same time, no large noise and vibration will be generated at the toothbrush head, so as to avoid the toothbrush head from vibrating too much and damaging the gums. It should be noted that the noise reduction function of the shaft 21 and the spring 22 does not affect the cleaning function of the present application.

[0030] In this embodiment, the body shell is used to assemble the movement 20, and the shaft 21 also includes an iron sheet 60, a magnet 61 for generating a first magnetic field, and a driving section 62. The driving section 62 has a through slot 621 for fixing the magnet 61 and a concave surface 622 connected to the through slot 621, and the iron sheet 60 covers the concave surface 622. The movement 20 also includes a motor assembly for generating a second magnetic field. The motor assembly can drive the shaft 21 to vibrate and rotate left and right. The motor assembly is arranged in the body shell. The motor assembly includes a silicon steel sheet 63 and a motor coil wound on the outside of the silicon steel sheet 63. The silicon steel sheet 63 has a receiving groove 631 for accommodating the driving section 62, and the driving section 62 is arranged in the receiving groove 631. The side of the silicon steel sheet 63 away from the receiving groove 631 can be connected to a motor coil frame, and the motor coil is wound on the outer wall of the motor coil frame and the silicon steel sheet 63. The motor coil and the silicon steel sheet 63 can cooperate to generate a second magnetic field after being energized. The second magnetic field cooperates with the first magnetic field, so that the magnet 61 can drive the shaft 21 to vibrate and rotate in the left and right directions in the second magnetic field. The movement 20 also includes a PCBA and a power supply 64 electrically connected to the PCBA. The PCBA is electrically connected to the motor coil. The PCBA can transmit a square wave current to the motor coil, so that the motor coil and the silicon steel sheet 63 generate a second magnetic field with periodic magnetic pole changes. Therefore, the PCBA provides a square wave current with frequency conversion to the motor coil, so that the silicon steel sheet 63 cooperates with the motor coil to generate a second magnetic field with periodic magnetic pole conversion, so that the magnetic pole periodicity of the second magnetic field is the same as that of the first magnetic field, so that the magnet 61 in the second magnetic field can vibrate and drive the drive section 62 to vibrate and reciprocate. It should be noted that the second magnetic field with periodic magnetic pole conversion can be understood as the silicon steel sheet 63 and the motor coil generating a second magnetic field with the same magnetic pole periodicity according to the frequency conversion of the square wave current provided by the PCBA.

[0031] like Figure 3 and Figure 4 As shown, in this embodiment, the movement 20 further includes an adjusting member 23 disposed in the body shell, the adjusting member 23 is connected to the spring 22 , and the adjusting member 23 is sleeved on the shaft 21 .

[0032] In this embodiment, in order to increase the service life of the spring 22, the movement 20 is provided to also include an adjusting member 23 disposed in the body shell, the adjusting member 23 is connected to the spring 22, and the adjusting member 23 is sleeved on the outer wall of the shaft 21, so that when the shaft 21 rotates, the adjusting member 23 drives the spring 22 to rotate together with the shaft 21, thereby avoiding the spring 22 from being unable to rotate with the shaft 21 during the rotation of the shaft 21 and being damaged.

[0033] like Figure 3 and Figure 4As shown, in this embodiment, the movement 20 also includes a rear bearing seat 24 connected to the shaft 21, the rear bearing seat 24 is connected to the adjusting member 23, the rear bearing seat 24 is provided with a first limiting groove 241, and the adjusting member 23 is provided with a protrusion 231 matching the first limiting groove 241, and when the shaft 21 rotates, the protrusion 231 moves in the first limiting groove 241.

[0034] In this embodiment, in order to limit the rotation of the shaft 21 within a certain range and at a small angle, the adjusting member 23 is provided to cooperate with the rear bearing seat 24 to limit the rotation range of the shaft 21. The rear bearing seat 24 is provided with a first limiting groove 241, and the adjusting member 23 is provided with a protrusion 231 matching the first limiting groove 241, so that when the shaft 21 rotates, the protrusion 231 moves in the first limiting groove 241. Since the adjusting member 23 is fixedly connected to the shaft 21, the rotation range of the shaft 21 is limited to the rotation within the groove width of the first limiting groove 241, thereby driving the toothbrush head to swing at a small angle, so that the toothbrush head performs a regular action of cleaning teeth.

[0035] like Figure 3 and Figure 4 As shown, in this embodiment, a through hole 242 is provided on the side of the rear bearing seat 24 close to the first limiting groove 241, and a second limiting groove 232 is provided on the side of the adjusting member 23 close to the protrusion 231. The adjusting member 23 is connected to the rear bearing seat 24 by a bolt passing through the through hole 242 and the second limiting groove 232, and when the protrusion 231 moves in the first limiting groove 241, the bolt moves in the second limiting groove 232.

[0036] In this embodiment, in order to improve the stability of the connection between the rear bearing seat 24 and the adjusting member 23, a through hole 242 is provided on the upper side of the rear bearing seat 24 close to the first limiting groove 241, and a second limiting groove 232 is provided on the lower side of the adjusting member 23 close to the protrusion 231. The adjusting member 23 is connected to the rear bearing seat 24 by bolts passing through the through hole 242 and the second limiting groove 232, so that when the protrusion 231 moves in the first limiting groove 241, the bolt moves in the second limiting groove 232, thereby stabilizing the connection between the adjusting member 23 and the rear bearing seat 24 without affecting the movement of the protrusion 231 in the first limiting groove 241.

[0037] like Figure 1 and Figure 2 As shown, in this embodiment, the body shell further includes a first shell 25 for protecting the movement 20 , the first shell 25 is disposed in the body shell, and the movement 20 is disposed in the first shell 25 .

[0038] In this embodiment, in order to prevent the shaft 21, iron sheet 60, magnet 61 and motor assembly in the movement 20 from getting damp, a body shell is provided including a first shell 25 for protecting the movement 20. The first shell 25 is arranged in the body shell, and the first shell 25 cooperates with the motor coil frame to wrap the shaft 21, iron sheet 60, magnet 61 and motor assembly, thereby preventing the shaft 21, iron sheet 60, magnet 61 and motor assembly from getting damp.

[0039] like Figure 1 and Figure 2 As shown, in this embodiment, the body shell also includes a second shell 26, and a snap hook 261 is provided on one side of the second shell 26. The first shell 25 has a second groove 251 on the side away from the brush head decorative ring 30, and the snap hook 261 is connected to the second groove 251.

[0040] In this embodiment, the second housing 26 is used to assemble the power supply 64. In order to improve the stability of the connection between the first housing 25 and the second housing 26 in the body housing, a snap hook 261 is provided on the side of the second housing 26 close to the first housing 25, and a second groove 251 matching the snap hook 261 is provided on the side of the first housing 25 away from the brush head decorative ring 30, and the snap hook 261 is connected to the second groove 251, thereby stabilizing the connection between the first housing 25 and the second housing 26.

[0041] like Figure 1 and Figure 2 As shown, in this embodiment, the electric toothbrush further includes a brush head decorative ring 30 and the brush handle 31 . The brush head decorative ring 30 and the brush handle 31 are integrally formed, and the shaft 21 passes through the body shell and is connected to the brush head decorative ring 30 .

[0042] In this embodiment, in order to reduce the noise caused by the relative vibration between the brush head decorative ring 30 and the brush handle 31, the brush head decorative ring 30 and the brush handle 31 are formed as one piece, thereby preventing the brush head decorative ring 30 from rotating relative to the brush handle 31 when the shaft 21 drives the brush head decorative ring 30 and the brush handle 31 to rotate and causing noise. The shaft 21 is arranged to pass through the body shell and be connected to the brush head decorative ring 30, so that the shaft 21 can drive the brush head decorative ring 30 and the brush handle 31 to rotate.

[0043] like Figure 1 and Figure 2 As shown, in this embodiment, the electric toothbrush also includes a sealing ring 40, and the body shell has an opening on one side close to the brush head decorative ring 30. The sealing ring 40 is connected to the opening of the body shell, and the sealing ring 40 is used to seal the opening and reduce the noise generated by the rotation of the shaft 21.

[0044] In this embodiment, in order to improve the airtightness of the body shell and further reduce the noise generated when the shaft 21 rotates, a sealing ring 40 is provided to be connected to the opening of the body shell. When the shaft 21 vibrates, the shaft 21 transmits the vibration to the sealing ring 40. The elastic contraction and elastic deformation of the sealing ring 40 itself offset the vibration transmitted by the shaft 21, thereby reducing the noise generated when the shaft 21 rotates. At the same time, the sealing ring 40 is connected to the opening of the body shell to prevent the movement 20 from getting damp.

[0045] like Figure 2 As shown, in this embodiment, the electric toothbrush further includes a bottom cover 50 connected to the body shell and a charging coil frame 51 for winding the coil, and the charging coil frame 51 is arranged in the bottom cover 50.

[0046] In this embodiment, in order to facilitate the charging of the electric toothbrush, a bottom cover 50 and a charging coil frame 51 are provided at the bottom of the electric toothbrush. A coil is wound on the charging coil frame 51, and the coil is electrically connected to the power supply 64. The external power supply charges the power supply 64 by connecting the coil.

[0047] like Figure 2 As shown, in this embodiment, a waterproof ring 52 is provided at the connection between the bottom cover 50 and the body shell, and the waterproof ring 52 is used to seal the connection between the bottom cover 50 and the body shell.

[0048] In this embodiment, in order to improve the airtightness between the body shell and the bottom cover 50, an annular groove matching the waterproof ring 52 is provided on one side where the bottom cover 50 is connected to the body shell. The waterproof ring 52 is sleeved in the annular groove, thereby improving the airtightness between the body shell and the bottom cover 50, thereby preventing the inside of the body shell from getting damp.

[0049] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An electric toothbrush, characterized in that: include: A fuselage, the fuselage comprising a fuselage shell and a movement arranged in the fuselage shell; The movement includes a spring and a shaft rod for driving the brush handle to rotate, the spring is wrapped around the shaft rod, one end of the spring has a connecting section formed by a bend, the shaft rod has a first groove, one end of the spring is connected to the body shell, and the other end of the spring is connected to the first groove through the connecting section.

2. The electric toothbrush according to claim 1, characterized in that The movement also includes an adjusting component arranged in the body shell, the adjusting component is connected to the spring, and the adjusting component is sleeved on the shaft.

3. The electric toothbrush according to claim 2, characterized in that The movement also includes a rear bearing seat connected to the shaft, the rear bearing seat is connected to the adjusting member, the rear bearing seat is provided with a first limiting groove, the adjusting member is provided with a protrusion matching the first limiting groove, and when the shaft rotates, the protrusion moves in the first limiting groove.

4. The electric toothbrush according to claim 3, characterized in that A through hole is provided on one side of the rear bearing seat close to the first limiting groove, and a second limiting groove is provided on one side of the adjusting member close to the protrusion. The adjusting member is connected to the rear bearing seat by a bolt passing through the through hole and the second limiting groove, and when the protrusion moves in the first limiting groove, the bolt moves in the second limiting groove.

5. The electric toothbrush according to claim 1, characterized in that The body shell also includes a first shell for protecting the movement, the first shell is arranged in the body shell, and the movement is arranged in the first shell.

6. The electric toothbrush according to claim 5, characterized in that The body shell also includes a second shell, a snap hook is provided on one side of the second shell, a second groove is provided on the side of the first shell away from the brush head decorative ring, and the snap hook is connected to the second groove.

7. The electric toothbrush according to claim 1, characterized in that The electric toothbrush further comprises a brush head decorative ring and the brush handle. The brush head decorative ring and the brush handle are integrally formed, and the shaft passes through the body shell and is connected to the brush head decorative ring.

8. The electric toothbrush according to claim 7, characterized in that The electric toothbrush also includes a sealing ring. The body shell has an opening on one side close to the brush head decorative ring. The sealing ring is connected to the opening of the body shell and is used to seal the opening and reduce the noise generated by the rotation of the shaft.

9. The electric toothbrush according to claim 1, characterized in that The electric toothbrush also includes a bottom cover connected to the body shell and a charging coil frame for winding a coil, and the charging coil is mounted in the bottom cover.

10. The electric toothbrush according to claim 9, characterized in that A waterproof ring is provided at the connection between the bottom cover and the body shell, and the waterproof ring is used to seal the connection between the bottom cover and the body shell.

Images