Vibration-reducing electric toothbrush

Abstract

The present invention relates to a vibration-damping electric toothbrush, comprising a handle and a brush head arranged at one end of the handle, the handle comprising an inner core, a mounting bracket and a shell, the inner core comprising a mounting portion formed of a hard material and a first vibration-damping portion formed of a soft material, the first vibration-damping portion being arranged on the outer surface of the mounting portion, the mounting portion being provided with a mounting cavity, the mounting bracket being arranged in the mounting cavity, and the shell being sleeved outside the first vibration-damping portion; a motor is arranged on the mounting bracket, one end of the motor is provided with a brush head shaft, the brush head shaft extends from one end of the mounting portion and is connected to the brush head. In the technical solution of the present invention, the motor can maintain its due rigidity and vibration effect, and will not swing left and right, and the vibration force cannot be transmitted to the brush head in a concentrated manner. At the same time, it can effectively reduce vibration, and achieve the effect of holding the handle without shaking the hand when the vibration-damping electric toothbrush is working.

Description

Technical Field

[0001] The invention relates to the technical field of cleaning products, and in particular to a vibration-reducing electric toothbrush. Background Art

[0002] During the operation of the electric toothbrush, the motor drives the toothbrush head of the electric toothbrush to vibrate at high frequency through the motor shaft to effectively clean the user's oral environment. The motor is usually supported and fixed inside the electric toothbrush using a mounting bracket. The mounting bracket itself has a poor vibration reduction effect, so it is necessary to use a vibration reduction pad made of flexible material between the motor and the mounting bracket, or between the mounting bracket and the housing to reduce the vibration of the motor during use. However, the additional vibration reduction pad will not only increase the assembly process and difficulty, but also have a poor vibration reduction effect when the vibration reduction pad is too hard. If the vibration reduction pad is too soft, it may cause the motor shaft to swing left and right, and the vibration force cannot be transmitted to the toothbrush head in a concentrated manner. Summary of the invention

[0003] In view of the above technical problems, the present invention provides a vibration-damping electric toothbrush, in which the motor can maintain its required rigidity and vibration effect, and will not swing left and right, and the vibration force cannot be transmitted to the brush head in a concentrated manner. At the same time, it can effectively reduce vibration, and achieve the effect of not shaking the hand when holding the handle of the vibration-damping electric toothbrush when working.

[0004] In order to solve the above technical problems, the present invention provides a vibration-damping electric toothbrush, comprising a handle and a brush head arranged at one end of the handle, the handle comprising an inner core, a mounting bracket and a shell, the inner core comprising a mounting portion formed of a hard material and a first vibration-damping portion formed of a soft material, the first vibration-damping portion being arranged on the outer surface of the mounting portion, a mounting cavity being arranged in the mounting portion, the mounting bracket being arranged in the mounting cavity, and the shell being sleeved outside the first vibration-damping portion; a motor is arranged on the mounting bracket, a brush head shaft is arranged at one end of the motor, and the brush head shaft extends from one end of the mounting portion and is connected to the brush head.

[0005] Furthermore, the mounting portion includes a connecting section and a mounting section, the connecting section has a first end and a second end opposite to each other, the mounting section is connected to the second end, the brush head is sleeved on the first end, the first end is provided with a through hole connected to the mounting cavity, a brush head shaft fixing hole is provided in the brush head, one end of the brush head shaft is fixed to the brush head shaft fixing hole, the other end of the brush head shaft passes through the through hole and is connected to the motor, and the first vibration damping portion is arranged on the outer surface of the mounting section.

[0006] Furthermore, the connecting section gradually increases from the first end to the second end, the outer diameter of the second end is larger than the outer diameter of the mounting section, the second end of the connecting section has a first step surface, the first step surface is provided with a groove extending toward the brush head, the first vibration damping portion has a filling section matching the shape of the groove and filled in the groove, the filling section has a second step surface; one end of the shell is against the second step surface.

[0007] Furthermore, the first vibration damping portion further comprises a body section connected to the filling section and at least one first convex ring arranged on the outer surface of the body section, the body section is spaced apart from the shell, and the first convex ring abuts against the inner surface of the shell.

[0008] Furthermore, the installation section has a first segment and a second segment, the outer diameter of the second segment is larger than the outer diameter of the first segment; the body segment is sleeved on the outer surface of the first segment, and the outer diameter of the body segment is equal to the outer diameter of the second segment.

[0009] Furthermore, the first vibration damping part also includes an extension section and at least one second convex ring arranged on the outer surface of the extension section, the second segment is provided with a receiving groove, and the extension section is arranged in the receiving groove; the second convex ring is also sleeved on the outer surface of the second segment, the outer surface of the second segment is spaced apart from the shell, and the second convex ring is abutted against the inner surface of the shell.

[0010] Furthermore, the mounting bracket includes a motor mounting seat and a circuit board mounting seat, the motor is arranged on the motor mounting seat, a circuit board is arranged on the circuit board mounting seat, and the motor mounting seat and the circuit board mounting seat are connected by multiple cantilevers arranged at intervals.

[0011] Furthermore, a second vibration damping portion formed of a soft material is provided between the motor mounting seat and the circuit board mounting seat.

[0012] Furthermore, it also includes a rear cover, one end of which is inserted into the end of the handle away from the brush head and abuts against the mounting portion.

[0013] Furthermore, a battery is provided in the installation cavity; the battery is located between the installation bracket and the back cover.

[0014] The vibration-damping electric toothbrush of the present invention is characterized in that the inner core is arranged as a mounting part formed of a hard material and a first vibration-damping part formed of a soft material, a mounting bracket of a motor is installed in the mounting part, the motor is arranged on the hard material, the motor and the mounting bracket will not directly contact the soft material, the motor can also maintain its due rigidity and vibration effect, and will not swing left and right, and the vibration force cannot be transmitted to the brush head in a concentrated manner. At the same time, the first vibration-damping part formed of the soft material separates the mounting part from the shell, and the vibration force from the motor is attenuated multiple times through the deformation of the first vibration-damping part, thereby effectively reducing the vibration and achieving the effect of not shaking the hand when holding the handle when the vibration-damping electric toothbrush is working. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the disassembled structure of a vibration-damping electric toothbrush shown in a preferred embodiment of the present invention.

[0016] Figure 2 It is a cross-sectional view of a vibration-damping electric toothbrush shown in a preferred embodiment of the present invention.

[0017] Figure 3 It is a schematic structural diagram of the inner core of a vibration-damping electric toothbrush according to a preferred embodiment of the present invention.

[0018] Figure 4 It is a structural schematic diagram of the mounting portion of the inner core of a vibration-damping electric toothbrush shown in a preferred embodiment of the present invention.

[0019] Figure 5A It is a cross-sectional view of a mounting bracket of a vibration-damping electric toothbrush shown in a preferred embodiment of the present invention.

[0020] Figure 5B It is a partial structural schematic diagram of a mounting bracket of a vibration-damping electric toothbrush shown in a preferred embodiment of the present invention. DETAILED DESCRIPTION

[0021] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly understood.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. In the present invention, "each" includes one and more than two quantities.

[0023] Figure 1is a schematic diagram of the disassembled structure of a vibration-reducing electric toothbrush according to a preferred embodiment of the present invention, Figure 2 is a cross-sectional view of a vibration-reducing electric toothbrush according to a preferred embodiment of the present invention, please refer to Figure 1 and Figure 2 The vibration-damping electric toothbrush of a preferred embodiment of the present invention comprises a handle 1 and a brush head 9 arranged at one end of the handle 1 .

[0024] The handle 1 comprises an inner core 10, a mounting bracket 20 and a shell 30. The shell 30 is located at the outermost side and is generally in the shape of a hollow cylinder.

[0025] The inner core 10 includes a mounting portion 11 formed of a hard material and a first vibration-damping portion 12 formed of a soft material, and the first vibration-damping portion 12 is arranged on the outer surface of the mounting portion 11. A mounting cavity 101 is arranged in the mounting portion 11, and a mounting bracket 20 is arranged in the mounting cavity 101, and a housing 30 is sleeved outside the first vibration-damping portion 12. A motor 40 is arranged on the mounting bracket 20, and a brush head shaft 41 is arranged at one end of the motor 40, and the brush head shaft 41 extends from one end of the mounting portion 11 and is connected to the brush head 9.

[0026] Specifically, Figure 3 is a schematic diagram of the inner core structure of a vibration-reducing electric toothbrush according to a preferred embodiment of the present invention, Figure 4 This is a structural schematic diagram of the mounting portion of the inner core of the vibration-reducing electric toothbrush according to a preferred embodiment of the present invention. Please refer to Figures 1 to 4 The mounting portion 11 includes a connecting section 111 and a mounting section 112. The connecting section 111 has a first end 1111 and a second end 1112 opposite to each other. The mounting section 112 is connected to the second end 1112. The brush head 9 is sleeved on the first end 1111. The first end 1111 is provided with a through hole 1113 communicating with the mounting cavity 101. The brush head 9 is provided with a brush head shaft fixing hole 90. One end of the brush head shaft 41 is fixed to the brush head shaft fixing hole 90, and the other end of the brush head shaft 41 passes through the through hole 1113 and is connected to the motor 40. In this embodiment, the first vibration damping portion 12 is arranged on the outer surface of the mounting section 112, and the outer surface of the connecting section 111 is exposed.

[0027] Furthermore, the connecting section 111 is generally conical, and the connecting section 111 gradually increases from the first end 1111 to the second end 1112. The outer diameter of the second end 1112 is greater than the outer diameter of the mounting section 112, so a step structure is formed at the second end 1112 of the connecting section 111, and the second end 1112 of the connecting section 111 has a first step surface 1114, and the first step surface 1114 is perpendicular to the length extension direction of the handle 1.

[0028] The first step surface 1114 is provided with a groove 1115 extending toward the brush head 9, and the shape of the groove 1115 can be set according to the shape of the connecting section 111. The first vibration reduction part 12 has a filling section 121 matching the shape of the groove 1115 and filled in the groove 1115, and the filling section 121 has a second step surface 1211. In this embodiment, the second step surface 1211 is flush with the first step surface 1114, but it is not limited thereto, and the second step surface 1211 can also be slightly protruding from the first step surface 1114.

[0029] One end of the housing 30 abuts against the second step surface 1211. In this embodiment, the housing 30 only abuts against the second step surface 1211 of the filling section 121, and the housing 30 is not in direct contact with the connecting section 111 of the mounting portion 11, so the vibration force of the motor 40 is not directly transmitted from the mounting portion 11 to the housing 30.

[0030] Furthermore, the first vibration-damping part 12 also includes a body section 122 connected to the filling section 121 and at least one first convex ring 123 arranged on the outer surface of the body section 122. The body section 122 is spaced apart from the housing 30, and the first convex ring 123 abuts against the inner surface of the housing 30. The body section 122 is indirectly connected to the housing 30 through the first convex ring 123. The vibration force transmitted from the motor 40 to the mounting part 11 of the inner core 10 is attenuated once by the filling section 121 and then attenuated twice by the first convex ring 123. The first vibration-damping part 12 can isolate the vibration of the mounting part 11, absorb and reduce the vibration, and achieve the effect of not shaking the hand when holding the handle 1 when the vibration-damping electric toothbrush is working. In this embodiment, the number of the first convex rings 123 is two.

[0031] Furthermore, the mounting section 112 has a first section 1121 and a second section 1122, the outer diameter of the second section 1122 being greater than the outer diameter of the first section 1121. The body section 122 is sleeved on the outer surface of the first section 1121, and the outer diameter of the body section 122 is equal to the outer diameter of the second section 1122.

[0032] Furthermore, the first vibration damping part 12 further includes an extension section 124 and at least one second convex ring 125 disposed on the outer surface of the extension section 124. The second segment 1122 is provided with a receiving groove 1122a, and the extension section 124 is disposed in the receiving groove 1122a. The second convex ring 125 is also sleeved on the outer surface of the second segment 1122, the outer surface of the second segment 1122 is spaced apart from the housing 30, and the second convex ring 125 abuts against the inner surface of the housing 30.

[0033] The present invention extends the first vibration damping portion 12 rearward through the extension section 124 so that the vibration force of the second segment 1122 of the mounting segment 112 is attenuated through the second convex ring 125, further absorbing and reducing the vibration force of the mounting segment 112 of the mounting portion 11 away from the connecting segment 111.

[0034] In this embodiment, the filling section 121, the main body section 122, the first convex ring 123, the extension section 124 and the second convex ring 125 of the first vibration damping part 12 are an integrally formed structure, and the soft material forming the first vibration damping part 12 is, for example, silicone, flexible plastic, etc.

[0035] In this embodiment, Figure 5A and Figure 5B As shown, the mounting bracket 20 includes a motor mounting seat 21 and a circuit board mounting seat 22, the motor 40 is arranged on the motor mounting seat 21, the circuit board mounting seat 22 is provided with a circuit board 50, and the motor mounting seat 21 and the circuit board mounting seat 22 are connected by a plurality of cantilevers 23 arranged at intervals. The cantilevers 23 are bar-shaped, specifically two in number, and the two cantilevers 23 are symmetrically arranged on both sides of the motor mounting seat 21. The motor mounting seat 21 is fixed to the mounting portion 11 by interference fit.

[0036] Furthermore, a second vibration damping part 24 formed of a soft material is provided between the motor mounting seat 21 and the circuit board mounting seat 22. The second vibration damping part 24 is flat and is provided between the two cantilevers 23. One side of the second vibration damping part 24 abuts against the motor mounting seat 21, and the other side abuts against the circuit board mounting seat 22. The vibration force of the motor 40 is transmitted to the cantilever 23 and the second vibration damping part 24 through the motor mounting seat 21. Since the cantilever 23 is thin, the vibration force it can transmit is less. Most of the vibration force finally transmitted to the circuit board mounting seat 22 is attenuated through the second vibration damping part 24, and then transmitted to the second segment 1122 of the mounting section 112 through the circuit board mounting seat 22 for secondary attenuation through the second convex ring 125.

[0037] The vibration-damping electric toothbrush further comprises a rear cover 60 , one end of which is inserted into the end of the handle 1 away from the brush head 9 and abuts against the mounting portion 11 .

[0038] Furthermore, a clamping block 1123 is provided at one end of the second segment 1122 of the mounting section 112 away from the first segment 1121 . The clamping block 1123 and the rear cover 60 are provided with a slide groove 61 . The clamping block 1123 is inserted into the slide groove 61 to connect the mounting portion 11 with the rear cover 60 .

[0039] A battery 70 is also disposed in the mounting cavity 101 ; the battery 70 is located between the mounting bracket 20 and the rear cover 60 . The battery 70 is used to supply power to the circuit board 50 and the motor 40 .

[0040] The housing 30 is also provided with a switch button, one end of the circuit board mounting base 22 is also provided with a positive pin connected to the battery 70, and the back cover 60 is provided with a negative pin connected to the battery 70. This is a well-known technology in the art and will not be repeated here.

[0041] The vibration-damping electric toothbrush of the present invention is achieved by configuring the inner core 10 to be a mounting portion 11 formed of a hard material and a first vibration-damping portion 12 formed of a soft material, and installing a mounting bracket 20 provided with a motor 40 in the mounting portion 11. The motor 40 is arranged on the hard material, and the motor 40 and the mounting bracket 20 will not directly contact the soft material. The motor 40 can also maintain its due rigidity and vibration effect, and will not swing left and right, and the vibration force cannot be transmitted to the brush head 9 in a concentrated manner. At the same time, the first vibration-damping portion 12 formed of a soft material separates the mounting portion 11 from the housing 30, and the vibration force from the motor 40 is attenuated multiple times through the deformation of the first vibration-damping portion 12, thereby effectively reducing the vibration and achieving the effect of not shaking the hand when holding the handle 1 when the vibration-damping electric toothbrush is working.

[0042] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A vibration-damping electric toothbrush, comprising a handle (1) and a brush head (9) arranged at one end of the handle (1), characterized in that: The handle (1) comprises an inner core (10), a mounting bracket (20) and a shell (30); the inner core (10) comprises a mounting portion (11) formed of a hard material and a first vibration-damping portion (12) formed of a soft material; a mounting cavity (101) is provided in the mounting portion (11); the mounting bracket (20) is arranged in the mounting cavity (101); the mounting portion (11) comprises a connecting section (111) and a mounting section (112); the connecting section (111) has a first end (1111) and a second end (1112) opposite to each other; the connecting section (111) is formed by the first end (1111) and the second end (1112) ) gradually increases toward the second end (1112), the mounting section (112) is connected to the second end (1112), the outer diameter of the second end (1112) is greater than the outer diameter of the mounting section (112), the first vibration-damping portion (12) is arranged on the outer surface of the mounting section (112), the second end (1112) of the connecting section (111) has a first step surface (1114), the first step surface (1114) is provided with a groove (1115) extending in the direction of the brush head (9), and the first vibration-damping portion (12) has a filling section that matches the shape of the groove (1115). (121) is filled in the groove (1115), the filling section (121) has a second step surface (1211), the shell (30) is sleeved outside the first vibration reduction part (12), and one end of the shell (30) abuts against the second step surface (1211); the mounting bracket (20) is provided with a motor (40), one end of the motor (40) is provided with a brush head shaft (41), the brush head shaft (41) extends from one end of the mounting part (11) and is connected to the brush head (9), the brush head (9) is sleeved on the first end (1111), and the first end (1111) is provided with A through hole (1113) is provided which is communicated with the mounting cavity (101); a brush head shaft fixing hole (90) is provided in the brush head (9); one end of the brush head shaft (41) is fixed to the brush head shaft fixing hole (90); the other end of the brush head shaft (41) passes through the through hole (1113) and is connected to the motor (40); the mounting bracket (20) comprises a motor mounting seat (21) and a circuit board mounting seat (22); the motor (40) is arranged on the motor mounting seat (21); and the motor mounting seat (21) and the circuit board mounting seat (22) are connected via a plurality of cantilevers (23) which are arranged at intervals.

2. The vibration-reducing electric toothbrush according to claim 1, characterized in that: The first vibration damping portion (12) further comprises a main body section (122) connected to the filling section (121) and at least one first convex ring (123) arranged on the outer surface of the main body section (122), the main body section (122) being spaced apart from the shell (30), and the first convex ring (123) being in contact with the inner surface of the shell (30).

3. The vibration-reducing electric toothbrush according to claim 2, characterized in that: The mounting section (112) comprises a first section (1121) and a second section (1122), the outer diameter of the second section (1122) being greater than the outer diameter of the first section (1121); the main body section (122) is sleeved on the outer surface of the first section (1121), the outer diameter of the main body section (122) being equal to the outer diameter of the second section (1122).

4. The vibration-reducing electric toothbrush according to claim 3, characterized in that: The first vibration damping portion (12) further comprises an extension section (124) and at least one second convex ring (125) arranged on the outer surface of the extension section (124); the second section (1122) is provided with a receiving groove (1122a), and the extension section (124) is arranged in the receiving groove (1122a); the second convex ring (125) is also sleeved on the outer surface of the second section (1122); the outer surface of the second section (1122) is spaced apart from the shell (30), and the second convex ring (125) abuts against the inner surface of the shell (30).

5. The vibration-reducing electric toothbrush according to claim 1, characterized in that: A circuit board (50) is provided on the circuit board mounting seat (22).

6. The vibration-reducing electric toothbrush according to claim 5, characterized in that: A second vibration reduction portion (24) formed of a soft material is also provided between the motor mounting seat (21) and the circuit board mounting seat (22).

7. The vibration-reducing electric toothbrush according to claim 6, characterized in that: It also comprises a rear cover (60), one end of which is inserted into the end of the handle (1) away from the brush head (9) and abuts against the mounting portion (11).

8. The vibration-reducing electric toothbrush according to claim 7, characterized in that: A battery (70) is also provided in the installation cavity (101); the battery (70) is located between the installation bracket (20) and the back cover (60).

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