CN219354234U - Driving structure of rotary electric toothbrush and rotary electric toothbrush - Google Patents

Abstract

The embodiment of the utility model provides a driving structure of a rotary electric toothbrush and the rotary electric toothbrush, wherein the driving structure comprises a motor; the eccentric wheel is fixed on the motor and driven by the motor to rotate; the first sliding block is arranged on the sliding shaft, a strip-shaped opening is formed in the first sliding block, a poking rod is arranged on the first sliding block, the wheel shaft is parallel to the poking rod and is perpendicular to the sliding shaft, and when the wheel shaft rotates, the first sliding block is driven to reciprocate linearly along the sliding shaft; the vibration shaft support is fixedly connected with a vibration shaft at one end, the vibration shaft is parallel to the poking rod, the poking rod stretches into the other end of the vibration shaft support to drive the vibration shaft support to swing back and forth along the circumference of a circle taking the other end of the vibration shaft support as the circle center and taking the length from one end to the other end as the radius, and the vibration shaft support can drive the vibration shaft to rotate back and forth. The driving structure can output stable torque, so that the rotating speed of the motor transmitted to the brush hair structure is kept unchanged, constant brushing force is kept, vibration of the brush handle is reduced, and brushing effect is improved.

Description

Driving structure of rotary electric toothbrush and rotary electric toothbrush

Technical Field

The utility model belongs to the technical field of electric toothbrushes, and particularly relates to a driving structure of a rotary electric toothbrush and the rotary electric toothbrush.

Background

At present, part of rotary electric toothbrushes realize the tooth brushing effect by driving a gear transmission through a motor, but the disadvantage of the gear transmission mode is that the rotating speed is reduced, which indirectly leads to the reduction of the rotating speed of a brush head and influences the cleaning effect of tooth brushing. There is also a brush head driving mechanism of an electric toothbrush disclosed in chinese patent CN216628793U, which implements a brushing effect through a link mechanism, and the disadvantage of this transmission mode is that the driving shaft and the motor shaft cannot be concentric, thereby being unfavorable for making the size of the toothbrush small. In addition to this, chinese patent CN201223467Y discloses an electric toothbrush which describes a transmission manner in which a connection shaft of an eccentric wheel is directly inserted into a groove of a swing rod to drive a main shaft, but the transmission manner may make torque transmitted from a motor output torque to the main shaft be negligible, unstable, and the concentricity of a driving shaft and a motor shaft cannot be achieved.

Disclosure of Invention

In view of the above problems in the prior art, an object of embodiments of the present utility model is to provide a driving structure of a rotary electric toothbrush and a rotary electric toothbrush, which can output a stable torque, maintain a rotation speed of a motor transmitted to a bristle structure, enable the bristle structure to output a stable brushing force, reduce vibration of a brush handle, and improve brushing effect.

The technical scheme adopted by the embodiment of the utility model is that the driving structure of the rotary electric toothbrush comprises:

a motor;

the eccentric wheel is fixed on the motor and driven by the motor to rotate;

the first sliding block is arranged on the sliding shaft, a strip-shaped opening is formed in the first sliding block, a poking rod is arranged on the first sliding block, a wheel shaft of the eccentric wheel extends into the strip-shaped opening, and the wheel shaft is parallel to the poking rod and is perpendicular to the sliding shaft, so that the first sliding block is driven to reciprocate linearly along the sliding shaft when the wheel shaft rotates;

the vibration shaft support is fixedly connected with a vibration shaft at one end, the vibration shaft is parallel to the poking rod, the poking rod stretches into the other end of the vibration shaft support to drive the vibration shaft support to swing back and forth along the circumference of a circle taking the other end of the vibration shaft support as the circle center and taking the length from one end to the other end as the radius, and the vibration shaft support can drive the vibration shaft to rotate back and forth. Through the transmission mode, the output torque of the motor can be constantly transmitted to the bristle structure, and the rotation speed of the motor can be approximately 1:1 and transmitted to the bristle structure, so that the bristle structure outputs stable brushing force, the vibration of the brush handle is reduced, and the brushing effect is improved; in addition, the oscillating shaft and motor output shaft may be eccentric or concentric to achieve greater torque or smaller size.

In some embodiments, the wheel body of the eccentric wheel is of a cylindrical structure, the wheel body is fixed on the output shaft of the motor and coaxial with the output shaft, the wheel shaft is fixed on the end face of the wheel body, and the axle center of the wheel shaft is parallel and non-collinear with the axle center of the wheel body. The motor can drive the wheel body to coaxially rotate, and the wheel shaft deviates from the axle center of the wheel body, so that the first sliding block is driven to reciprocate and linearly move.

In some embodiments, the oscillating shaft is coaxial with the output shaft of the motor. Facilitating the handle to be made in smaller dimensions.

In some embodiments, the sliding shaft comprises a first sliding shaft and a second sliding shaft which are arranged in parallel, the first sliding block is provided with a first through hole and a second through hole, the first sliding shaft penetrates through the first through hole, and the second sliding shaft penetrates through the second through hole. The movement of the first sliding block is more stable.

In some embodiments, the driving structure further includes a motor support, the motor support includes a support body and two opposite extending portions formed by extending outwards from opposite sides of one end of the support body, the motor is disposed on the support body, the eccentric wheel is disposed between the two extending portions, and an output shaft of the motor passes through the support body to be connected with the eccentric wheel. The eccentric wheel, the first sliding block and the vibration shaft support are independently positioned in the accommodating space formed by the motor support.

In some embodiments, two extension portions of the motor bracket are respectively provided with a fixing hole corresponding to the first sliding shaft and the second sliding shaft, and two ends of the first sliding shaft and the second sliding shaft are respectively fixedly connected with the fixing holes. The first sliding block can stably do linear motion.

In some embodiments, the driving structure further comprises a motor frame top cover, two clamping grooves are formed in the peripheral wall of the motor frame top cover, connectors are respectively arranged on two extending portions of the motor support, the connectors are in fit and clamping connection with the clamping grooves, an accommodating space is formed after the motor frame top cover and the motor support are in clamping connection, and the first sliding block and the vibration shaft support are located in the accommodating space. The motor rack has the advantages that the accommodating space can be provided for the eccentric wheel, the first sliding block and the vibration shaft support, the accommodating space can provide support for the first sliding block, and in addition, the motor rack top cover has the function of blocking sundries in the tooth brushing process from entering the accommodating space.

In some embodiments, the motor housing top cover is provided with a central aperture through which the vibration shaft passes to be secured with the vibration shaft bracket. The motor frame top cover has the functions of restraining and supporting the vibration shaft.

In some embodiments, a sealing ring is sleeved on the vibration shaft, and the sealing ring is used for sealing the central hole. The sealing ring has the function of preventing some sundries from entering the accommodating space through the central hole in the tooth brushing process.

The utility model provides a rotation type electric toothbrush, includes brush head and brush holder, rotation type electric toothbrush still includes driving structure, and the brush head includes brush hair structure and connection casing, and brush hair structure is connected with the one end of connection casing, and the other end of connection casing is connected with the brush holder, and driving structure is located the inside of brush holder, and the brush holder is stretched out to the one end of vibrations axle to pass connection casing and brush hair structure fixed connection, drive brush hair structure and rotate when making vibrations axle rotate. The rotary electric toothbrush has the driving structure, so that the rotary electric toothbrush has the function of the driving structure, and the effects of outputting stable torque, keeping the rotating speed unchanged and the like can be realized.

Compared with the prior art, the driving structure of the rotary electric toothbrush and the rotary electric toothbrush have the beneficial effects that: the motor drives the eccentric wheel to rotate, the eccentric wheel drives the first sliding block to do reciprocating rectilinear motion, and then the vibration shaft support is driven to do reciprocating swing, the vibration shaft support drives the vibration shaft to do reciprocating rotation, and the vibration shaft transmits the reciprocating rotation to the bristle structure of the brush head, so that the bristle structure can play a role in cleaning an oral cavity; through the transmission mode, the output torque of the motor can be constantly transmitted to the bristle structure, and the rotation speed of the motor can be approximately 1:1 and transmitted to the bristle structure, so that the bristle structure outputs stable brushing force, the vibration of the brush handle is reduced, and the brushing effect is improved; in addition, the oscillating shaft and motor output shaft may be eccentric or concentric to achieve greater torque or smaller size.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the utility model, as claimed.

An overview of various implementations or examples of the technology described in this disclosure is not a comprehensive disclosure of the full scope or all of the features of the technology disclosed.

Drawings

In the drawings, which are not necessarily drawn to scale, like numerals may describe similar components in different views. The same reference numerals with letter suffixes or different letter suffixes may represent different instances of similar components. The accompanying drawings illustrate various embodiments by way of example in general and not by way of limitation, and together with the description and claims serve to explain the inventive embodiments. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts. Such embodiments are illustrative and not intended to be exhaustive or exclusive of the present apparatus or method.

Fig. 1 is an exploded view of a driving structure of a rotary electric toothbrush according to an embodiment of the present utility model.

Fig. 2 is an overall construction view of a driving structure of a rotary electric toothbrush according to an embodiment of the present utility model.

Fig. 3 is an overall partial cross-sectional view of a drive structure of a rotary electric toothbrush in accordance with an embodiment of the present utility model.

Fig. 4 is an exploded view showing a part of the structure of a rotary electric toothbrush according to an embodiment of the present utility model.

Fig. 5 is an overall construction view of a rotary electric toothbrush according to an embodiment of the present utility model.

Reference numerals:

1-a motor; 2-eccentric wheel; 3-a first slider; 4-a toggle rod; 5-a vibration shaft bracket; 6-a vibration shaft; 7-a first slide shaft; 8-a second slide shaft; 9-a first through hole; 10-a second through hole; 11-a motor bracket; 12-fixing holes; 13-motor rack top cover; 14-clamping grooves; 15-linker; 16-a central hole; 17-a sealing ring; 18-a brush head; 19-a brush handle; 20-cell.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. It will be apparent that the described embodiments are some, but not all, embodiments of the utility model. All other embodiments, which can be made by a person skilled in the art without creative efforts, based on the described embodiments of the present utility model fall within the protection scope of the present utility model.

Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this utility model belongs. The terms "first," "second," and the like, as used herein, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.

In order to keep the following description of the embodiments of the present utility model clear and concise, the detailed description of known functions and known components thereof have been omitted.

As shown in fig. 1, an embodiment of the present utility model provides a driving structure of a rotary electric toothbrush, the driving structure including: a motor 1; the eccentric wheel 2 is fixed on the motor 1 and is driven to rotate by the motor 1; the first sliding block 3 is arranged on the sliding shaft, a strip-shaped opening is formed in the first sliding block 3, a poking rod 4 is arranged on the first sliding block 3, a wheel shaft of the eccentric wheel 2 extends into the strip-shaped opening, the wheel shaft is parallel to the poking rod 4, and the wheel shaft and the poking rod 4 are perpendicular to the sliding shaft so as to drive the first sliding block 3 to reciprocate linearly along the sliding shaft when the wheel shaft rotates; the vibration shaft support 5, its one end fixedly connected with vibrations axle 6, vibrations axle 6 are parallel with stir the pole 4, stir in pole 4 stretches into the other end of vibrations axle support 5 for drive vibrations axle support 5 along regard its other end as the centre of a circle, use the circumference reciprocal swing of the circle of the length of its one end to the other end as the radius, can drive vibrations axle 6 reciprocal rotation when vibrations axle support 5 reciprocal swing.

In the driving structure, the motor 1 provides driving force, and the eccentric wheel 2, the first sliding block 3, the vibration shaft bracket 5 and the vibration shaft 6 play a role in transmission. The output shaft of the motor 1 can drive the eccentric wheel 2 to rotate, the wheel shaft of the eccentric wheel 2 can drive the first sliding block 3 to slide in the rotating process, the first sliding block 3 is arranged on the sliding shaft, and the sliding shaft is perpendicular to the wheel shaft, so that the first sliding block 3 can reciprocate in a linear manner along the axial direction of the sliding shaft in the rotating process of the wheel shaft.

In the process of the first sliding block 3 in a reciprocating rectilinear motion mode, the poking rod 4 of the first sliding block 3 can poke the other end of the vibration shaft support 5 to swing in a reciprocating mode, a structure similar to a pendulum is formed at one end and the other end of the vibration shaft support 5, one end of the vibration shaft support 5 swings slightly, and therefore the vibration shaft 6 can be driven to rotate in a reciprocating mode. Therefore, the output rotation speed of the motor 1 is not reduced by the transmission mode, and the bristle structure can keep the same rotation speed as the motor 1, so that the cleaning effect of brushing teeth is improved. The driving structure can output stable torque, the torque is not negligent, the tooth brushing force of the bristle structure can be kept constant, the vibration of the brush handle 19 can be reduced, and the use experience of a user is improved.

As shown in fig. 1, in some embodiments, the wheel body of the eccentric wheel 2 is in a cylindrical structure, the wheel body is fixed on the output shaft of the motor 1 and coaxial with the output shaft, the wheel shaft is fixed on the end surface of the wheel body, and the axle center of the wheel shaft is parallel and non-collinear with the axle center of the wheel body. The motor 1 can drive the wheel body to coaxially rotate, and the wheel shaft deviates from the axle center of the wheel body, so that the first sliding block 3 is driven to reciprocate to linearly move.

In some embodiments, the vibration shaft 6 is coaxial with the output shaft of the motor 1. It can be seen from fig. 1 that the top of the vibration shaft supporter 5 swings reciprocally with respect to the bottom, so that the vibration shaft 6 and the output shaft of the motor 1 can be concentric or eccentric by adjusting the longitudinal dimension of the vibration shaft supporter 5, wherein the brush holder 19 can be advantageously made smaller in size when the vibration shaft 6 and the output shaft of the motor 1 are coaxial, and a larger torque can be obtained when the vibration shaft 6 and the output shaft of the motor 1 are not coaxial.

In addition, in fig. 1, the upper surface and the lower surface of the vibration shaft support 5 are respectively arc transition surfaces, so that the vibration shaft support can be matched with the inner side wall of the brush handle 19 better.

As shown in fig. 1, in some embodiments, the sliding shaft includes a first sliding shaft 7 and a second sliding shaft 8 that are disposed in parallel, the first sliding block 3 is provided with a first through hole 9 and a second through hole 10, the first sliding shaft 7 is disposed through the first through hole 9, and the second sliding shaft 8 is disposed through the second through hole 10. The first sliding block 3 moves linearly along the first sliding shaft 7 and the second sliding shaft 8 in a reciprocating way, so that the movement of the first sliding block 3 is smoother.

As shown in fig. 1, 2 and 3, in some embodiments, the driving structure further includes a motor bracket 11, where the motor bracket 11 includes a bracket body and two opposite extending portions formed by extending outwards from opposite sides of one end of the bracket body, the motor 1 is disposed on the bracket body, the eccentric 2 is disposed between the two extending portions, and an output shaft of the motor 1 passes through the bracket body and is connected with the eccentric 2. The motor 1 is arranged in the brush holder 19, the output shaft of the motor 1 penetrates through the main body of the motor bracket 11 and is connected with the eccentric wheel 2, so that the eccentric wheel 2, the first sliding block 3 and the vibration shaft bracket 5 are independently positioned in the accommodating space formed by the motor bracket 11 (the vibration shaft extends out of the accommodating space), and the motor 1 can be arranged in the brush holder 19 through the supporting frame.

As shown in fig. 1, 2 and 3, in some embodiments, two extension parts of the motor bracket 11 are respectively provided with fixing holes 12 corresponding to the first slide shaft 7 and the second slide shaft 8, and both ends of the first slide shaft 7 and the second slide shaft 8 are respectively fixedly connected with the fixing holes 12. The motor bracket 11 can support the first slide shaft 7 and the second slide shaft 8, so that the first slider 3 can stably perform linear motion.

As shown in fig. 1, 2 and 3, in some embodiments, the driving structure further includes a motor frame top cover 13, two clamping grooves 14 are formed in the peripheral wall of the motor frame top cover 13, two extending portions of the motor support 11 are respectively provided with a connector 15, the connectors 15 are in fit and clamping connection with the clamping grooves 14, an accommodating space is formed after the motor frame top cover 13 and the motor support 11 are in clamping connection, and the first sliding block 3 and the vibration shaft support 5 are both located in the accommodating space. The motor frame top cover 13 and the motor support 11 can provide accommodation space for the eccentric wheel 2, the first sliding block 3 and the vibration shaft support 5 through cooperation joint, and the structure forming accommodation space can provide support for the first sliding block 3, and in addition, the motor frame top cover 13 has the effect of blocking some sundries entering the accommodation space in the tooth brushing process.

As shown in fig. 1, in some embodiments, the motor frame cover 13 is provided with a center hole 16, and the vibration shaft 6 passes through the center hole 16 to be fixed with the motor frame cover 13. The motor frame top cover 13 has the function of restraining and supporting the vibration shaft 6.

As shown in fig. 1, 2 and 3, in some embodiments, the vibration shaft 6 is sleeved with a sealing ring 17, and the sealing ring 17 is used for sealing the central hole 16. The sealing ring 17 has the function of blocking some impurities during brushing from entering the receiving space through the central hole 16.

As shown in fig. 1, 2, 3, 4 and 5, a rotary electric toothbrush includes a brush head 18 and a brush handle 19, the rotary electric toothbrush further includes a driving structure according to any of the above embodiments, the brush head 18 includes a bristle structure and a connection housing, the bristle structure is connected with one end of the connection housing, the other end of the connection housing is connected with the brush handle 19, the driving structure is located inside the brush handle 19, and one end of the vibration shaft 6 extends out of the brush handle 19 and is fixedly connected with the bristle structure through the connection housing, so that the bristle structure is driven to rotate when the vibration shaft 6 rotates. Through eccentric wheel 2, first slider 3 and vibrations axle support 5 between motor 1 and the brush hair structure, make motor 1 drive brush hair structure rotation, play the effect of brushing teeth. The handle 19 is further provided with a battery 20, PCBA patches and a tail cap. The battery 20 is connected to the motor 1, and a tail cap is provided at the end of the brush handle 19.

As shown in fig. 2, assuming that the arrow direction a is parallel to the first sliding shaft 7 and the second sliding shaft 8, when the first sliding block 3 moves linearly in the direction a, the other end of the vibration shaft bracket 5 is driven to swing in the same direction, and the vibration shaft 6 is driven to rotate in the direction indicated by the arrow c. When the first sliding block 3 moves linearly along the direction opposite to the direction a, the other end of the vibration shaft bracket 5 is driven to swing in the same direction, and the vibration shaft 6 is driven to rotate along the direction opposite to the direction indicated by the arrow c, so that the transmission process is realized.

The above description is intended to be illustrative and not limiting, and variations, modifications, alternatives, and variations of the above embodiments may be made by those of ordinary skill in the art within the scope of the present disclosure. Also, the above examples (or one or more aspects thereof) may be used in combination with each other, and it is contemplated that the embodiments may be combined with each other in various combinations or permutations.

Claims (10)

1. A drive structure of a rotary electric toothbrush, the drive structure comprising:

a motor (1);

the eccentric wheel (2) is fixed on the motor (1) and is driven to rotate by the motor (1);

the first sliding block (3) is arranged on the sliding shaft, a strip-shaped opening is formed in the first sliding block (3) and is provided with a poking rod (4), a wheel shaft of the eccentric wheel (2) stretches into the strip-shaped opening, and the wheel shaft is parallel to the poking rod (4) and is perpendicular to the sliding shaft, so that the first sliding block (3) is driven to reciprocate linearly along the sliding shaft when the wheel shaft rotates;

vibrations axle support (5), its one end fixedly connected with vibrations axle (6), vibrations axle (6) with stir pole (4) are parallel, stir pole (4) stretch into in the other end of vibrations axle support (5), drive vibrations axle support (5) are along regard as the centre of a circle with its other end to one end is the reciprocal swing of circumference of radius of the length of the other end, vibrations axle support (5) can drive vibrations axle (6) reciprocal rotation.

2. The driving structure of a rotary electric toothbrush according to claim 1, characterized in that the wheel body of the eccentric wheel (2) is a cylinder structure, the wheel body is fixed on the output shaft of the motor (1) and is coaxial with the output shaft, the wheel shaft is fixed on the end face of the wheel body, and the axle center of the wheel shaft is parallel and non-collinear with the axle center of the wheel body.

3. A driving structure of a rotary electric toothbrush according to claim 1, characterized in that the vibration shaft (6) is coaxial with the output shaft of the motor (1).

4. The driving structure of a rotary electric toothbrush according to claim 1, wherein the sliding shaft comprises a first sliding shaft (7) and a second sliding shaft (8) which are arranged in parallel, the first sliding block (3) is provided with a first through hole (9) and a second through hole (10), the first sliding shaft (7) is arranged through the first through hole (9), and the second sliding shaft (8) is arranged through the second through hole (10).

5. The drive structure of a rotary electric toothbrush according to claim 4, further comprising a motor bracket (11), the motor bracket (11) comprising a bracket body and two opposite extensions formed by extending outwardly from opposite sides of one end of the bracket body, respectively, the motor (1) being provided on the bracket body, the eccentric wheel (2) being provided between the two extensions, an output shaft of the motor (1) being connected to the eccentric wheel (2) through the bracket body.

6. The driving structure of a rotary electric toothbrush according to claim 5, wherein two extension portions of the motor bracket (11) are respectively provided with fixing holes (12) corresponding to the first sliding shaft (7) and the second sliding shaft (8), and both ends of the first sliding shaft (7) and the second sliding shaft (8) are respectively fixedly connected with the fixing holes (12).

7. The driving structure of a rotary electric toothbrush according to claim 5, further comprising a motor frame top cover (13), wherein two clamping grooves (14) are formed in the peripheral wall of the motor frame top cover (13), connectors (15) are respectively arranged on two extending portions of the motor frame (11), the connectors (15) are clamped with the clamping grooves (14) in a matched manner, an accommodating space is formed after the motor frame top cover (13) and the motor frame (11) are clamped, and the first sliding block (3) and the vibration shaft frame (5) are located in the accommodating space.

8. The drive structure of a rotary electric toothbrush according to claim 7, wherein the motor frame top cover (13) is provided with a center hole (16), and the vibration shaft (6) passes through the center hole (16) to be fixed with the vibration shaft holder (5).

9. The driving structure of the rotary electric toothbrush according to claim 8, characterized in that a sealing ring (17) is sleeved on the vibration shaft (6), and the sealing ring (17) is used for sealing the center hole (16).

10. A rotary electric toothbrush comprising a brush head (18) and a brush holder (19), characterized in that the rotary electric toothbrush further comprises a driving structure according to any one of claims 1-9, the brush head (18) comprises a bristle structure and a connecting housing, the bristle structure is connected with one end of the connecting housing, the other end of the connecting housing is connected with the brush holder (19), the driving structure is positioned inside the brush holder (19), one end of the vibration shaft (6) extends out of the brush holder (19) and penetrates through the connecting housing to be fixedly connected with the bristle structure, so that the bristle structure is driven to rotate when the vibration shaft (6) rotates.