Electric toothbrush capable of brushing teeth in rotary mode

Abstract

The utility model discloses an electric toothbrush capable of brushing teeth in a rotary mode, which belongs to the technical field of electric toothbrushes and comprises a toothbrush head, a machine body and a machine body lower cover which are connected in sequence, bristles are arranged on the toothbrush head, an installation opening is arranged at the bottom of the machine body, a plurality of semicircular grooves are arranged on the machine body, and the semicircular grooves are communicated with the machine body. A machine core assembly is arranged in the machine body, the machine core assembly comprises a support, a PCB, a gear box and a gear box cover, the support is installed in the machine body, the PCB is fixed to one side of the support, the gear box is arranged on the top of the support, and the gear box cover is arranged on the top of the gear box. According to the electric toothbrush capable of brushing teeth in the rotating mode, the toothbrush head drives the bristles to rotate back and forth in the direction of slits between the teeth, rapid and all-directional tooth brushing is achieved, the covering face can be increased when the teeth are cleaned, and the tooth brushing efficiency is improved while cleaning dead corners are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of electric toothbrushes, in particular to a rotary electric toothbrush for brushing teeth. Background Art

[0002] Currently, many users have incorrect brushing methods, which leads to tooth and gum diseases. Common problems include uneven brushing force, insufficient brushing time, and incorrect brushing angles, which result in incomplete removal of dental plaque, leading to oral problems such as caries and gingivitis. In addition, traditional manual toothbrushes are prone to blind spots during use, especially the back teeth and the inner part of the teeth, which are difficult to clean.

[0003] Although the electric toothbrushes currently on the market have improved the brushing effect to a certain extent, there are still some problems. The movement of the brush head of many electric toothbrushes is relatively simple, most of which are single-direction rotation or vibration, and cannot achieve all-round cleaning of teeth. Due to design limitations, these electric toothbrushes cannot be effectively adjusted according to the oral structure and brushing habits of different users, and the use effect is not satisfactory. Therefore, it is urgent to provide an electric toothbrush that solves the above problems. Utility Model Content

[0004] The utility model aims to provide a rotary electric toothbrush for brushing teeth, so as to solve the problems mentioned in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides an electric toothbrush for rotary brushing, comprising a toothbrush head, a body and a lower cover of the body connected in sequence, the toothbrush head is provided with bristles, the bottom of the body is provided with a mounting port, the body is provided with a plurality of semicircular grooves, a core assembly is provided in the body, the core assembly comprises a bracket, a PCB, a gear box and a gear box cover, the bracket is installed inside the body, the PCB is fixed on one side of the bracket, the gear box is provided on the top of the bracket, and the gear box cover is provided on the top of the gear box.

[0006] Preferably, a battery is installed on the bracket, a DC motor is arranged inside the gear box, the bottom end of the DC motor is connected to the top of the bracket, and a spur gear is arranged on the top of the DC motor.

[0007] Preferably, a shock-absorbing pad is provided between the DC motor and the bracket.

[0008] Preferably, a transmission assembly is provided on the top of the spur gear.

[0009] Preferably, the transmission assembly includes a large gear, connecting rod 1, connecting rod 2 and an inner shaft of a toothbrush, one side of the large gear is meshed and connected with the spur gear, the large gear is provided with a fixing hole, the connecting rod 2 is provided with through hole 1 and through hole 2, the bottom end of the connecting rod 1 passes through the through hole 1 and is inserted into the fixing hole, an insertion rod is provided at the bottom of the inner shaft of the toothbrush through a fixing plate, and the bottom end of the insertion rod is inserted into through hole 2.

[0010] Preferably, the fixing hole is an eccentric hole.

[0011] Preferably, a waterproof ring is provided on the top of the gear box cover, and the top end of the inner shaft of the toothbrush passes through the gear box cover and the waterproof ring in sequence to be connected to the toothbrush head.

[0012] Therefore, the utility model adopts a rotary electric toothbrush with the above structure, which has the following advantages:

[0013] (1) The spur gear attached to the DC motor drives the large gear to form a simple gearbox, which reduces the speed and increases the torque, providing greater rotational power in a limited space, making the rotational power of the toothbrush head stronger and more effective in cleaning stains on the tooth surface;

[0014] (2) Insert the second connecting rod into the first connecting rod and insert it into the eccentric hole of the large gear. When the DC motor drives the large gear, the second connecting rod swings left and right. One end of the inner shaft of the toothbrush is fixed on the hole of the gear box so that the inner shaft of the toothbrush forms a fan-shaped rotational motion with the axial direction as the center, and the original single longitudinal axis rotational motion of the motor is changed into a bidirectional fan-shaped back-and-forth rotational motion;

[0015] (3) The toothbrush head is driven by the inner shaft of the toothbrush to achieve the effect of back-and-forth rotation. The toothbrush head drives the bristles to rotate back and forth along the direction of the teeth, achieving fast and all-round brushing, which can increase the coverage area when cleaning teeth, and improve the brushing efficiency while reducing the cleaning dead corners;

[0016] (4) The body of the toothbrush is designed with multiple inward-facing semicircular grooves, which effectively improve the user's comfortable grip when using the electric toothbrush. At the same time, the toothbrush will produce slight vibrations when working, which can effectively prevent the risk of the user slipping and dropping the toothbrush.

[0017] The technical solution of the utility model is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of an embodiment of a rotary electric toothbrush for brushing teeth according to the utility model;

[0019] Figure 2 An exploded view of a core assembly of an electric toothbrush for rotating teeth brushing according to the utility model;

[0020] Figure 3 An exploded view of a transmission assembly of an embodiment of a rotary electric toothbrush for brushing teeth according to the utility model;

[0021] Figure 4 It is a combined diagram of the core components of an embodiment of a rotary electric toothbrush for brushing teeth according to the utility model;

[0022] Figure 5 It is a combined diagram of a transmission assembly of an embodiment of a rotary electric toothbrush for brushing teeth according to the utility model;

[0023] Reference numerals

[0024] 1. Toothbrush head; 2. Body; 3. Body cover; 4. Bristles; 5. Movement assembly; 51. Bracket; 52. PCB; 53. Gearbox; 54. Gearbox cover; 6. Battery; 7. DC motor; 8. Shockproof pad; 9. Spur gear; 10. Transmission assembly; 101. Large gear; 102. Linking rod 1; 103. Linking rod 2; 104. Toothbrush inner shaft; 11. Waterproof ring. DETAILED DESCRIPTION

[0025] The technical solution of the utility model is further described below through the accompanying drawings and embodiments.

[0026] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" and the like mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" and the like are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0027] Example

[0028] like Figure 1-5As shown, the utility model provides a rotary electric toothbrush for brushing teeth, comprising a toothbrush head 1, a body 2 and a body lower cover 3 connected in sequence, and the toothbrush head 1 is provided with bristles 4 for brushing teeth and transmitting vibrations. The body 2 plays the role of waterproofing and fixing the bracket 51, and the body lower cover 3 plays the role of waterproofing and charging. A mounting port is provided at the bottom of the body 2 for installing the core assembly 5. The body 2 is provided with a plurality of inwardly concave semicircular grooves, which can enhance the grip of the entire toothbrush and effectively prevent the risk of the user slipping and falling.

[0029] The body 2 is provided with a core assembly 5, which includes a bracket 51, a PCB 52, a gear box 53 and a gear box cover 54. The bracket 51 is installed inside the body 2 and is used to fix the battery 6, the gear box 53 and the PCB 52. The PCB 52 is fixed to one side of the bracket 51 and is used to control the DC motor 7 and charge the battery 6. The gear box 53 is set on the top of the bracket 51 and is used to fix the large gear 101 and the gear box cover 54. The gear box cover 54 is set on the top of the gear box 53 and is used to fix the inner shaft 104 of the toothbrush.

[0030] A battery 6 is installed on the bracket 51 to provide a power source for the DC motor 7. A DC motor 7 is arranged inside the gear box 53. The working mode of the DC motor 7 is to drive the DC motor 7 by controlling a MOS tube through the single-chip microcomputer on the PCB 52. The bottom end of the DC motor 7 is connected to the top of the bracket 51. An anti-vibration pad 8 is arranged between the DC motor 7 and the bracket 51 for shock absorption and noise reduction. A spur gear 9 is fixedly arranged on the top of the DC motor 7.

[0031] A transmission assembly 10 is arranged on the top of the spur gear 9, and the transmission assembly 10 includes a large gear 101, a connecting rod 102, a connecting rod 2 103 and a toothbrush inner shaft 104. One side of the large gear 101 is meshed with the spur gear 9, and is used to reduce the power generated by the DC motor 7. The spur gear 9 attached to the DC motor 7 drives the large gear 101 to form a simple gearbox. A fixing hole is arranged on the large gear 101, and the fixing hole is an eccentric hole. A through hole 1 and a through hole 2 are arranged on the connecting rod 2 103. The bottom end of the connecting rod 1 102 passes through the through hole 1 on the connecting rod 2 103 and is fixedly inserted in the fixing hole, which is used to fix the connecting rod 1 102. A plug rod is arranged at the bottom of the toothbrush inner shaft 104 through a fixing plate, and the toothbrush inner shaft 104 is fixedly inserted in the through hole 2 through the plug rod, which is used to fix the waterproof ring 11 and transmit vibration to the toothbrush head 1. A waterproof ring 11 is provided on the top of the gear box cover 54, which is used to reduce shock and prevent moisture from entering the gear box to affect the operation of the DC motor 7. The top of the toothbrush inner shaft 104 passes through the gear box cover 54 and the waterproof ring 11 in sequence, and the top of the toothbrush inner shaft 104 is connected to the toothbrush head 1.

[0032] When the DC motor 7 is started, the large gear 101 and the spur gear 9 are decelerated to sequentially drive the second linkage rod 103, the first linkage rod 102 and the toothbrush inner shaft 104 to rotate, and then the toothbrush inner shaft 104 drives the toothbrush head 1 to achieve the effect of rotating the bristles 4 back and forth. By driving the counterclockwise and clockwise rotation of the toothbrush inner shaft 104 by the DC motor 7, the back and forth rotation of the toothbrush head 1 can be controlled.

[0033] The specific connection methods of each part all adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology, which will not be described in detail here.

[0034] When using a rotary electric toothbrush of the present embodiment, first install the DC motor 7 into the gear box 53, and put the shockproof pad 8 on the tail of the DC motor 7, then fix the bracket 51 at the bottom of the gear box 53, and install the battery 6 on the bracket 51, pass the connecting rod 102 through the through hole 1 of the connecting rod 2 103 and insert it into the fixing hole of the large gear 101, then install these structures into the gear box 53, and install the toothbrush inner shaft 104 above the connecting rod 2 103 through the through hole 2, then cover the gear box cover 54, and put the waterproof ring 11 on the toothbrush inner shaft 104, and then fix the PCB 52 on one side of the bracket 51 to form a movement assembly 5, and install the entire movement assembly 5 into the body 2 through the installation port, and then cover the body lower cover 3, and insert the toothbrush head 1 on the body 2 to complete the assembly of the electric toothbrush.

[0035] Therefore, the utility model adopts a rotary electric toothbrush with the above structure, and the toothbrush head drives the bristles to rotate back and forth along the direction of the teeth, thereby achieving fast and all-round brushing, which can increase the coverage area when cleaning the teeth, and improve the brushing efficiency while reducing the cleaning dead corners.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that they can still modify or replace the technical solution of the utility model with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the utility model.

Claims

1. A rotary electric toothbrush, characterized in that: It includes a toothbrush head, a body and a lower cover of the body which are connected in sequence, the toothbrush head is provided with bristles, the bottom of the body is provided with a mounting port, the body is provided with a plurality of semicircular grooves, a core assembly is provided in the body, the core assembly includes a bracket, a PCB, a gear box and a gear box cover, the bracket is installed inside the body, the PCB is fixed on one side of the bracket, the gear box is provided on the top of the bracket, and the gear box cover is provided on the top of the gear box.

2. A rotary electric toothbrush for brushing teeth according to claim 1, characterized in that: A battery is installed on the bracket, a DC motor is arranged inside the gear box, the bottom end of the DC motor is connected to the top of the bracket, and a spur gear is arranged on the top of the DC motor.

3. The electric toothbrush for rotating teeth brushing according to claim 2, characterized in that: An anti-vibration pad is arranged between the DC motor and the bracket.

4. The electric toothbrush for rotating teeth brushing according to claim 2, characterized in that: A transmission assembly is arranged on the top of the spur gear.

5. The electric toothbrush for rotating teeth brushing according to claim 4, characterized in that: The transmission assembly includes a large gear, a connecting rod 1, a connecting rod 2 and an inner shaft of a toothbrush. One side of the large gear is meshed with the spur gear. A fixing hole is provided on the large gear. A through hole 1 and a through hole 2 are provided on the connecting rod 2. The bottom end of the connecting rod 1 passes through the through hole 1 and is inserted into the fixing hole. An insertion rod is provided at the bottom of the inner shaft of the toothbrush through a fixing plate, and the bottom end of the insertion rod is inserted into the through hole 2.

6. The electric toothbrush for rotating teeth brushing according to claim 5, characterized in that: The fixing hole is an eccentric hole.

7. The electric toothbrush for rotating teeth brushing according to claim 5, characterized in that: A waterproof ring is arranged on the top of the gear box cover, and the top end of the inner shaft of the toothbrush passes through the gear box cover and the waterproof ring in sequence and is connected to the toothbrush head.

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