Electric toothbrush with bristles reciprocating in tooth direction

Abstract

The utility model discloses an electric toothbrush with bristles reciprocating along the tooth direction, which comprises a toothbrush body, a transmission component arranged on the circumferential inner wall of the toothbrush body, a brush head component arranged at one end of the toothbrush body, the brush head component comprises a brush head seat, two stepped holes arranged at the neck of the brush head seat, and a battery arranged at the other end of the circumferential inner wall of the toothbrush body. According to the electric toothbrush with the bristles reciprocating in the tooth direction, the brush piece shaft deflects and rotates to drive the brush pieces to deflect and rotate, the bristle bundles are driven to reciprocate in the tooth direction, the cleaning effect of kneading and pulling is achieved, meanwhile, enamel for polishing the convex faces of teeth is reduced, vibration is prevented from being transmitted to arms, cheeks and the face, and the tooth brushing effect is improved. And secondly, the two center rotating shafts are made to rotate in a deflection mode at the same speed and in opposite directions through the transmission assembly, vertical brushing force and twisting and cutting staggered force are generated, tooth seams and gingival seams can be cleaned conveniently, and the cleaning effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of electric toothbrush technology, specifically to an electric toothbrush in which the bristles reciprocate along the tooth direction. Background Technology

[0002] Electric toothbrushes are becoming increasingly accepted by the public. Through the rapid rotation or vibration of the motor, the brush head generates high-frequency vibrations, instantly breaking down toothpaste into fine foam that deeply cleans between teeth. At the same time, the vibration of the bristles promotes blood circulation in the mouth and has a massaging effect on the gum tissue.

[0003] Currently, electric toothbrushes on the market can be broadly divided into two categories. One type is Oral-Bee, characterized by a motor driving a mechanical mechanism to oscillate, causing the brush head bristles to deflect and rotate, thus cleaning the teeth by making the bristles rotate and oscillate against the tooth surface. The other type uses sonic and ultrasonic vibration brush heads, represented by brands such as Philips and Panasonic. Its working principle is to generate high-frequency vibrations in the brush head. When the bristles come into contact with the tooth surface, the vibrating bristles achieve the effect of cleaning the teeth. Among the vibration methods, some use a motor to generate power and produce vibration through a mechanical device, while others use a piezoelectric functional module to directly generate vibration by passing electricity.

[0004] While both types of electric toothbrushes offer numerous benefits for oral hygiene, they still suffer from the following issues: Firstly, sonic and ultrasonic toothbrushes, exemplified by Philips, transmit vibrations to the arm and cheek during use, resulting in poor comfort. Secondly, rotary toothbrushes, such as Oral-Bee, generate significant energy and vibration that is distributed to the most sensitive, protruding tooth surfaces, causing unnecessary excessive abrasion of the enamel. These two issues require improvement. Therefore, we propose an electric toothbrush with bristles that reciprocate along the tooth direction. Utility Model Content

[0005] The purpose of this section is to outline some aspects of the embodiments of this utility model and to briefly introduce some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be used to limit the scope of this utility model.

[0006] 1. Technical problems to be solved:

[0007] To address the issues mentioned above, such as vibration transmission to the arms and cheeks leading to poor comfort, and the excessive energy and vibration distributed to the cleanest protruding tooth surface causing unnecessary excessive polishing of the enamel, this invention is proposed.

[0008] Therefore, the purpose of this utility model is to provide an electric toothbrush in which the bristles reciprocate along the tooth direction. When working, the bristles are driven by a rotating shaft, and the brush head and toothbrush body do not vibrate, so there is no tingling sensation caused by vibration. It is highly comfortable. The mechanical structure arranges the bristles in the tooth direction. When in motion, they reciprocate along the tooth direction, which maximizes the cleaning of dirt in the gaps between teeth. The cleaning effect is good, and it does not excessively polish the raised clean tooth surface.

[0009] 2. Technical Solution:

[0010] To solve the above-mentioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution:

[0011] An electric toothbrush with bristles reciprocating along the tooth direction includes a toothbrush body. A transmission assembly is provided on the inner circumference of the toothbrush body. A brush head assembly is provided at one end of the toothbrush body. The brush head assembly includes a brush head seat with two stepped holes at one end. Two brush blade shafts are rotatably connected to the inner circumference of the neck of the brush head seat. The other end of each brush blade shaft is rotatably connected to the inner wall of the brush head seat cavity. Multiple brush blades are provided on the outer circumference of each of the two brush blade shafts. Multiple bristle bundles are provided at the top of each brush blade. A brush blade sleeve is provided on the inner circumference of the stepped holes and fitted onto the outer circumference of the brush blade shafts. A battery is provided at the other end of the inner circumference of the toothbrush body, and an electronic control module is provided on the outer circumference of the toothbrush body.

[0012] As a preferred embodiment of the electric toothbrush of the present invention, the transmission component includes a motor, the output end of the motor is provided with a motor shaft, one end of the outer circumference of the motor shaft is provided with a motor gear, the motor gear meshes with a crankshaft gear, the end face of the crankshaft gear is provided with a crankshaft, the outer circumference of the crankshaft is sleeved with a connecting rod, the other end of the connecting rod is sleeved with a driven wheel, the center of the end face of the driven wheel is provided with a central shaft, and the motor is electrically connected to a battery.

[0013] As a preferred embodiment of the electric toothbrush of the present invention, the outer circumference of the central rotating shaft is provided with a rotating shaft gear, the rotating shaft gear meshes with another rotating shaft gear, and the inner circumference of the other rotating shaft gear is provided with another central rotating shaft.

[0014] As a preferred embodiment of the electric toothbrush of the present invention, in which the bristles reciprocate along the tooth direction, the crankshaft is set at a position off from the center of the crankshaft gear, and the central axis of the crankshaft gear is rotatably connected to the internal support plate of the toothbrush body.

[0015] As a preferred embodiment of the electric toothbrush of the present invention, the ends of the central rotating shaft and the brush blade shaft are both axially shaped with semi-circular cross-sections, and the size and position of the end of the central rotating shaft match the size and position of the end of the brush blade shaft.

[0016] As a preferred embodiment of the electric toothbrush of the present invention, the inner wall of the brush blade bushing is provided with multiple protrusions, and one end of the outer wall of the central rotating shaft is provided with multiple recesses.

[0017] As a preferred embodiment of the electric toothbrush of the present invention, the bristles reciprocate along the tooth direction, wherein the plurality of brush blades are arranged in an alternating manner, the length of the bristle bundle is preset, and the material of the brush blade bushing is an elastic material.

[0018] 3. Beneficial effects:

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] This type of electric toothbrush, with bristles that reciprocate along the tooth direction, cleans teeth by attaching and embedding a certain number of bristle bundles at the top of the brush plate. The brush plate is deflected and rotated by the brush plate shaft, which drives the bristle bundles to reciprocate along the tooth direction, producing a rubbing and pulling cleaning effect. At the same time, it reduces the polishing of the enamel on the convex surface of the teeth and avoids the vibration being transmitted to the arm and cheek skin, which would result in poor comfort. The electric control module 5 makes it convenient for users to control the electric toothbrush.

[0021] This type of electric toothbrush, with bristles reciprocating along the tooth direction, works by turning on the motor, which drives the motor shaft to rotate. This, in turn, causes the motor gear to drive the crankshaft gear to rotate, resulting in the crankshaft rotating around the center of the crankshaft gear at a certain angle. Through a connecting rod, this rotational motion is converted into a deflection motion of the driven wheel at a certain angle, causing the central shaft to deflect. This deflection motion, via the shaft gear, drives another shaft gear to rotate, causing the other central shaft to deflect at the same speed but in the opposite direction. The two central shafts transmit their equal-speed, opposite-direction, and equal-angle deflection motions to the brush blade shaft through a bushing and an intersecting semi-circular cross section. The brush blade shaft then drives the bristles to generate an up-and-down brushing force and a rubbing and cutting force, which facilitates cleaning between teeth and gum lines, improving cleaning effectiveness. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0023] Figure 1 This is a schematic diagram of the internal structure of an electric toothbrush according to the present invention, in which the bristles reciprocate along the tooth direction.

[0024] Figure 2 This is a schematic diagram of the overall structure of an electric toothbrush according to the present invention, in which the bristles reciprocate along the tooth direction.

[0025] Figure 3 This is a schematic diagram of the transmission component structure of an electric toothbrush with reciprocating motion of bristles along the tooth direction according to the present invention.

[0026] Figure 4 This is a schematic plan view of the brush head assembly structure of an electric toothbrush with bristles reciprocating along the tooth direction according to the present invention.

[0027] Figure 5 This is a schematic diagram of the brush head assembly structure of an electric toothbrush with bristles reciprocating along the tooth direction according to the present invention.

[0028] The following are the labeling instructions in the diagram: 1. Toothbrush body; 2. Transmission assembly; 3. Brush head assembly; 4. Battery; 5. Electronic control module; 201. Motor; 202. Motor shaft; 203. Motor gear; 204. Crankshaft gear; 205. Crankshaft; 206. Connecting rod; 207. Driven wheel; 208. Central shaft; 209. Shaft gear; 301. Brush head holder; 302. Stepped hole; 303. Brush blade shaft; 304. Brush blade; 305. Bristle bundle; 306. Brush blade shaft sleeve. Detailed Implementation

[0029] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0030] This utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not be construed as limiting the scope of protection of this utility model. In actual manufacturing, the three-dimensional spatial dimensions of length, width, and depth should be included.

[0031] The orientation or positional relationship indicated in the terminology is based on the orientation or positional relationship shown in the accompanying drawings and is only for the convenience of describing the present invention and simplifying the description. It is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0032] The term "connection method" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] The embodiments of this utility model will now be described in further detail with reference to the accompanying drawings.

[0034] This utility model provides an overall structural diagram of an embodiment of an electric toothbrush in which the bristles reciprocate along the tooth direction, including:

[0035] Please see Figures 1-5 This embodiment of an electric toothbrush with bristles reciprocating along the tooth direction includes a toothbrush body 1. A transmission assembly 2 is fixedly mounted on the inner circumference of the toothbrush body 1. A brush head assembly 3 is fixedly mounted on one end of the toothbrush body 1. The brush head assembly 3 includes a brush head seat 301. Two stepped holes 302 are opened at one end of the brush head seat 301. Two brush blade shafts 303 are rotatably connected to the inner circumference of the neck of the brush head seat 301. The other end of the brush blade shafts 303 is rotatably connected to the inner cavity side wall of the brush head seat 301. Multiple brush blades 304 are fixedly mounted on the outer circumference of each of the two brush blade shafts 303. Multiple bristle bundles 305 are arranged on the top of the brush blades 304. A sleeve on the circumference of the brush blade shaft 303 is rotatably connected to the inner circumference of the stepped holes 302. The toothbrush body 1 has a brush blade bushing 306 on the outer wall and a battery 4 fixed at the other end of the inner circumference of the toothbrush body 1. The toothbrush body 1 has an electric control module 5 threadedly connected to the outer circumference of the toothbrush body 1. A certain number of bristle bundles 305 are installed on the top of the brush blade 304 to clean the teeth. The brush blade shaft 303 and the brush blade bushing 306 are accommodated through the stepped hole 302. The brush blade shaft 303 deflects and rotates, which drives the brush blade 304 to deflect and rotate, and drives the bristle bundles 305 to reciprocate along the tooth direction, producing a rubbing and pulling cleaning effect. At the same time, it reduces the polishing of the enamel on the convex surface of the teeth and avoids the vibration transmitted to the arm and cheek skin, which would result in poor comfort. The electric control module 5 makes it convenient for the user to control the electric toothbrush.

[0036] It is worth noting that, in order to improve user comfort, the transmission component 2 specifically includes a motor 201. A motor shaft 202 is fixedly mounted at the output end of the motor 201. A motor gear 203 is fixedly mounted at one end of the outer circumference of the motor shaft 202. The motor gear 203 meshes with a crankshaft gear 204. A crankshaft 205 is fixedly mounted on the end face of the crankshaft gear 204. A connecting rod 206 is sleeved on the outer circumference of the crankshaft 205. A driven wheel 207 is sleeved on the other end of the connecting rod 206. A central shaft 208 is fixedly mounted at the center of the end face of the driven wheel 207. The motor 201 is electrically connected to the battery 4. By turning on the motor 201, the motor shaft 202 is driven to rotate, thereby causing the motor gear 203 to drive the crankshaft gear 204 to rotate. This causes the crankshaft 205 to rotate around the center of the crankshaft gear 204. The connecting rod 206 converts the rotational motion into a deflection motion of the driven wheel 207 at a certain angle, thereby causing the central shaft 208 to deflect.

[0037] Next, for ease of use, specifically, a rotating shaft gear 209 is fixedly mounted on the outer circumference of the central rotating shaft 208. The rotating shaft gear 209 meshes with another rotating shaft gear 209. Another central rotating shaft 208 is fixedly mounted on the inner circumference of the other rotating shaft gear 209. The rotating shaft gear 209 drives the other rotating shaft gear 209 to rotate, thereby causing the other central rotating shaft 208 to deflect at the same speed and in the opposite direction. This drives the two brush blade shafts 303 to deflect at the same speed and in the opposite direction, so that the bristles arranged alternately on the different brush blade shafts generate an alternating up-and-down and rubbing-cutting force, which is convenient for cleaning between teeth and gum lines and improves the cleaning effect.

[0038] Meanwhile, in order to make the central rotating shaft 208 deflect and rotate, specifically, the crankshaft 205 is fixedly set at a position offset from the center of the crankshaft gear 204. The central shaft of the crankshaft gear 204 is rotatably connected to the internal support plate of the toothbrush body 1. By setting the crankshaft 205 at a position offset from the center of the crankshaft gear 204, it is easy to convert the rotational motion into a deflection motion at a certain angle.

[0039] Furthermore, to facilitate the connection between the central rotating shaft 208 and the brush shaft 303, specifically, the ends of both the central rotating shaft 208 and the brush shaft 303 are axially shaped with a semi-circular cross-section. The size and position of the end of the central rotating shaft 208 match the size and position of the end of the brush shaft 303. Through the semi-circular cross-section, the central rotating shaft 208 and the brush shaft 303 are connected to generate linkage.

[0040] It is worth noting that, in order to improve the stability of the assembly, specifically, a brush sleeve 306 is fixedly provided at one end of the outer circumference of the brush shaft 303, and multiple protrusions are fixedly provided on the inner circumference of the brush sleeve 306. Multiple recesses are provided at one end of the outer circumference of the central rotating shaft 208. By inserting the central rotating shaft 208 into the brush sleeve 306, the protrusions engage with the recesses, thereby making the assembly more stable.

[0041] Finally, to improve the user experience, specifically, multiple brush blades 304 are arranged in an alternating pattern, the length of the bristle bundles 305 is preset, and the material of the brush blade bushing 306 is elastic. The alternating arrangement of multiple brush blades 304 avoids obstruction during deflection, the preset length of the bristle bundles 305 makes it easy to adapt to the shape of the teeth, and the elastic material of the brush blade bushing 306 ensures that the brush head can be inserted when changing and also has a certain locking force, making it easy to disassemble and assemble.

[0042] In addition, the circuits, electronic components and modules involved in this utility model are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this utility model does not involve any improvement to the internal structure and method within the scope described.

[0043] Combination Figures 1-5 The electric toothbrush of this embodiment, in which the bristles reciprocate along the tooth direction, is used in the following specific way:

[0044] 1: According to actual use, a certain number of bristle bundles 305 are glued and implanted on the top of the brush blade 304. The brush blade shaft 303 deflects and rotates, causing the brush blade 304 to deflect and rotate, driving the bristle bundles 305 to reciprocate along the tooth direction to clean the teeth. The electric control module 5 is threadedly connected to the outer circumference of the toothbrush body 1.

[0045] 2: Starting the motor 201 causes the motor shaft 202 to drive the motor gear 203 to rotate, which in turn causes the crankshaft gear 204 to drive the crankshaft 205 to rotate around the center of the crankshaft gear 204. Through the connecting rod 206, the driving wheel 207 drives the shaft 208 to deflect at a certain angle. The shaft gear 209 drives another shaft gear 209 to rotate, which causes the other central shaft 208 to deflect at the same speed but in the opposite direction, generating an alternating force of brushing up and down and rubbing and cutting to clean the gaps between teeth and the gum line.

[0046] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An electric toothbrush with bristle reciprocating movement in the tooth direction, characterized in that, The utility model provides a toothbrush, including toothbrush body (1), it is characterized by: toothbrush body (1) circumferential inner wall is equipped with transmission assembly (2), toothbrush body (1) one end is equipped with brush head assembly (3), brush head assembly (3) includes brush head seat (301), two stepped holes (302) are seted up in brush head seat (301) one end, two brush piece shafts (303) are rotatably connected to brush head seat (301) neck circumferential inner wall, the circumferential outer wall of two brush piece shafts (303) is equipped with a plurality of brush piece (304), a plurality of bristle tufts (305) are arranged on the top of brush piece (304), the circumferential inner wall of stepped hole (302) is equipped with brush piece shaft sleeve (306) of the sleeve of brush piece shaft (303) circumferential outer wall, the circumferential inner wall of toothbrush body (1) other end is equipped with battery (4), and the circumferential outer wall of toothbrush body (1) is equipped with electric control module (5).

2. The electric toothbrush of claim 1, wherein the bristle following toothwise reciprocating movement is characterized by, Transmission assembly (2) includes motor (201), the output end of motor (201) is equipped with motor rotating shaft (202), one end of motor rotating shaft (202) circumferential outer wall is equipped with motor gear (203), motor gear (203) is engaged with crank gear (204), the end face of crank gear (204) is equipped with crankshaft (205), the circumferential outer wall of crankshaft (205) is equipped with connecting rod (206), one end of connecting rod (206) is equipped with driven wheel (207), the end face center of driven wheel (207) is equipped with center rotating shaft (208), and motor (201) is electrically connected with battery (4).

3. The bristle-tipped reciprocating motion electric toothbrush according to claim 2, wherein, The circumferential outer wall of center rotating shaft (208) is equipped with rotating shaft gear (209), and another rotating shaft gear (209) is engaged with another rotating shaft gear (209), and the circumferential inner wall of another rotating shaft gear (209) is equipped with another center rotating shaft (208).

4. The bristle-angled reciprocating motion electric toothbrush according to claim 3, characterized by, The crankshaft (205) is arranged at the position deviating from the center of the crank gear (204), and the central axis of the crank gear (204) is rotatably connected with the support plate inside the toothbrush body (1).

5. The bristle-angled reciprocating motion electric toothbrush according to claim 4, wherein The ends of the center rotating shaft (208) and the brush piece shaft (303) are both in the shape of a half-circle cross-section shaft, and the size and position of the end of the center rotating shaft (208) are matched with the size and position of the end of the brush piece shaft (303).

6. The bristle-angled reciprocating motion electric toothbrush according to claim 5, wherein The circumferential inner wall of the brush piece shaft sleeve (306) is provided with a plurality of protrusions, and one end of the circumferential outer wall of the center rotating shaft (208) is provided with a plurality of recesses.

7. The bristle-tipped reciprocating motion electric toothbrush according to claim 6, wherein, The plurality of brush pieces (304) are arranged in a staggered manner, the lengths of the bristle tufts (305) are pre-set, and the brush piece shaft sleeve (306) is made of elastic material.

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