CN211300447U

CN211300447U - Brush head of electric toothbrush

Info

Publication number: CN211300447U
Application number: CN201921919658.7U
Authority: CN
Inventors: 李孟阳; 邵羲晖; 王刚
Original assignee: Shenzhen Tongjie Science & Technology Co ltd
Current assignee: Shenzhen Tongjie Science & Technology Co ltd
Priority date: 2019-11-08
Filing date: 2019-11-08
Publication date: 2020-08-21
Anticipated expiration: 2029-11-08

Abstract

The utility model discloses an electric toothbrush's brush head belongs to oral care technical field, it includes that the brush head plants hair spare, transfer line and first shell of brush, place in the shell of brush head in the transfer line, and transfer line and first shell of brush carry out normal running fit, the outside protrusion of one end of transfer line extends to the outside of first shell of brush to cup joint fixed brush head and plant hair spare, the transfer line is kept away from the one end that the brush head planted hair spare and is driven with electric toothbrush's brush holder and be connected, make the brush head plant hair spare along with the transfer line rotates round the axle center of first shell of brush. This technical scheme, it can effectively solve current conventional toothbrush dynamics when giving other people or pet brush teeth is difficult to control, the cleaning effect is unsatisfactory, and the technical problem that lacks the finger of people when current finger stall type toothbrush uses protects.

Description

Brush head of electric toothbrush

Technical Field

The utility model relates to the technical field of oral care, in particular to brush head of electric toothbrush.

Background

At present, pet owners pay more and more attention to the oral cavity problem of pets, and because the pets cannot brush teeth automatically, the oral cavity cleaning needs to be carried out by the aid of the pet owners. Similarly, as China gradually enters the elderly society, the number of elderly patients is increased, many of the patients cannot take care of the life of the patients for a long time, the patients need to be helped by others, and special tools are also needed for the oral cavity cleaning requirements of the patients. The toothbrushes on the market at present mainly comprise the following parts: 1. the conventional toothbrush (including a manual toothbrush or a common electric toothbrush) used by people is easy to damage teeth when a patient, a long person or a pet brushes teeth, because the force is not light or heavy or difficult to control when the patient or the pet brushes teeth, and when some people brush the teeth with too much force horizontally or vertically to achieve the cleaning effect, not only gum is damaged, but also the teeth are damaged invisibly. In addition, considering that a person is required to control the pet when the oral cavity of the pet is cleaned, the range of cleaning is limited due to the structure and size limitations of the conventional toothbrush, and at the same time, the speed of manual movement of the person is limited, and the time for brushing teeth for other people or pets is limited, so that the overall cleaning effect is not good enough, and a satisfactory oral cavity cleaning effect cannot be achieved even after brushing teeth. 2. The special fingerstall type toothbrush for auxiliary use is sleeved on fingers of a person when in use, and oral sundries are removed in a mode of being pulled back and forth in the oral cavity of a pet when a pet owner uses the toothbrush. It is seen that toothbrushes currently available on the market do not meet the needs of pet owners or service personnel of chronically ill patients, both in terms of product definition and structural design.

SUMMERY OF THE UTILITY MODEL

The main object of the utility model is to provide a brush head of electric toothbrush, it aims at solving current conventional toothbrush dynamics when brushing teeth for other people or pet is difficult to control, clean effect is unsatisfactory, and lacks the technical problem of protecting to people's finger when current finger stall type toothbrush uses.

In order to achieve the above object, the utility model provides a pair of electric toothbrush's brush head, the brush head plants hair spare, transfer line and first shell of brush including the brush head, place in the transfer line in the first shell of brush, just the transfer line with first shell of brush carries out normal running fit, the outside protrusion of one end of transfer line extends to the outside of first shell of brush is in order to cup joint fixedly the hair spare is planted to the brush head, the transfer line is kept away from the one end that the hair spare was planted to the brush head drives with electric toothbrush's brush holder and is connected, makes the brush head plant the hair spare along with the transfer line round the axle center of first shell of brush rotates.

Optionally, the bristle planting member comprises a cylindrical body and bristles arranged around the outer side wall of the cylindrical body.

Optionally, the drive rod is rotationally coupled to the brush head housing via a bearing.

Optionally, the outer ring of the bearing is fixed to the inner side of the end of the brush head housing adjacent to the brush head bristle planting member by interference fit.

Optionally, the inner ring of the bearing is fixedly connected with one end of the transmission rod adjacent to the bristle planting part of the brush head through interference fit.

Optionally, the brush head housing is of a straight cylindrical structure.

Optionally, the brush head housing is of a bent cylindrical structure.

Optionally, the transfer line includes the short body of rod and the long body of rod, the short body of rod with brush first shell carries out normal running fit, the one end of the short body of rod cup joints and is fixed with brush head hair planting spare, the other end of the short body of rod cup joints and is fixed with first bevel gear, the brush holder drive is connected the one end of the long body of rod, the other end of the long body of rod cup joints and is fixed with second bevel gear, second bevel gear with first bevel gear meshing is connected, makes the long body of rod drive down the short body of rod and carry out synchronous rotation.

The utility model provides an electric toothbrush's brush head, it includes that the brush head plants hair spare, transfer line and first shell of brush, place in the transfer line in the first shell of brush, and the transfer line carries out normal running fit with first shell of brush, the outside protrusion of one end of transfer line extends to the outside of first shell of brush to cup joint fixed brush head and plant hair spare, the transfer line is kept away from the one end that the brush head planted hair spare and is driven with electric toothbrush's brush holder and be connected, make the brush head plant hair spare along with the transfer line rotates round the axle center of first shell of brush. Thus, when the electric toothbrush adopting the brush head is used for brushing teeth for other people or pets, only the brush handle of the electric toothbrush needs to be held, one end of the brush head is stretched into an oral cavity needing to be cleaned (fingers do not need to stretch into the oral cavity to protect fingers), and the brush head can work by controlling the driving motor, so that the brush head hair-planting part rotates around the axis of the brush head shell along with the transmission rod, teeth in the oral cavity are cleaned in all directions by the brush head hair-planting part, and the wider contact surface formed by the flowing cleaning capacity (controllable strength) generated by the electric toothbrush and the rotation of the brush head hair-planting part can more comprehensively take care of each tooth surface and tooth gaps, and dental plaque is effectively removed. Therefore, the technical scheme can effectively solve the technical problems that the strength of the conventional toothbrush is difficult to control and the cleaning effect is not ideal when the conventional toothbrush is used for brushing teeth for other people or pets, and the fingers of people are not protected when the conventional finger sleeve type toothbrush is used.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a schematic view of an overall structure of an electric toothbrush according to an embodiment of the present invention.

Fig. 2 is a schematic view showing a disassembled structure of the electric toothbrush shown in fig. 1.

Fig. 3 is a sectional view of the electric toothbrush of fig. 1 taken along line a-a.

Fig. 4 is an enlarged partial view of the electric toothbrush shown in fig. 3.

Fig. 5 is a schematic view of a disassembled structure of a brush head of an electric toothbrush according to an embodiment of the present invention.

Detailed Description

The following describes the present invention with reference to the accompanying drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features related to the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Example one

As shown in fig. 1 and 2, the embodiment of the present invention provides an electric toothbrush 100, the electric toothbrush 100 includes a brush head 110 and a brush handle 120, the brush head 110 includes a brush head bristle-planting member 111, a transmission rod 112 and a brush head housing 113, the transmission rod 112 is disposed in the brush head housing 113, and the transmission rod 112 and the brush head housing 113 are rotatably fitted, one end of the transmission rod 112 protrudes outward to extend to the outside of the brush head housing 113, so as to connect and fix the brush head bristle-planting member 111, a driving motor 121 is disposed in the brush handle 120, the brush head 110 is detachably connected to the top end of the brush handle 120, and the driving motor 121 drives and connects the transmission rod 112 to keep away from one end of the brush head bristle-planting member 111, so that the brush head bristle-planting member 111 rotates.

In the present embodiment, the rotation may be 360 degrees, or other rotation methods such as reciprocating rotation may be used. As shown in fig. 2, the bristle planting member 111 specifically includes a cylindrical body and bristles arranged around the outer sidewall of the cylindrical body, and the bristles are densely distributed on the outer sidewall of the cylindrical body, so that when the bristle planting member 111 rotates around the axis of the bristle housing 113 along with the driving rod 112, the bristles can continuously clean the oral cavity. The drive link 112 is rotatably coupled to the brushhead housing 113 by a bearing 114. Specifically, the outer ring of the bearing 114 is fixed to the inner side of the end of the brush head housing 113 adjacent to the brush head bristle part 111 through interference fit (facilitating the fixation of the bearing), the inner ring of the bearing 114 is fixedly connected with the end of the transmission rod 112 adjacent to the brush head bristle part 111 through interference fit (facilitating the assembly of the bearing), so that the transmission rod 112 is rotatably fitted with the brush head housing 113 through the bearing 114, and meanwhile, the bearing 114 can convert the sliding friction between the transmission rod 112 and the brush head housing 113 into rolling friction which is much smaller than the sliding friction, so that the bearing 114 can effectively reduce the friction between the two, and the service life of the related parts is effectively prolonged. In addition, the bearing 114 also has a certain limit function for two objects.

As shown in fig. 2 and 3, the brush head 110 in this embodiment is a straight brush head, that is, the brush head housing 11 in this embodiment is a straight cylindrical structure, and in addition, in order to limit the moving range of the transmission rod 112 in the brush head housing 113 along the extending direction thereof, a plurality of limiting bosses 1121 are convexly disposed on the outer side of the transmission rod 112, and a plurality of limiting steps 1131 are disposed on the inner side of the brush head housing 113. In this embodiment, two limit bosses 1121 are protruded from the outer side of the transmission rod 112, and a limit step 1131 is disposed on the inner side of the brush head housing 113, and the limit step 1131 is matched with one of the limit bosses 1121 to limit the moving range of the transmission rod 112 in the brush head housing 113 along the extending direction thereof. During assembly, the bearing 114 is pressed into the inner side of the end of the brush head shell 113 adjacent to the brush head bristle planting part 111 by a jig for fixation, one end of the rotating head rod 112 penetrates through one end of the brush head shell 113 and penetrates out of the bearing 114 at the other end until reaching a limiting position (a limiting boss 1121 on the transmission rod 112 and a limiting step 1131 on the inner side of the brush head shell 113), a proper amount of fixing glue is coated at the penetrating end of the transmission rod 112, then the brush head bristle planting part 111 is sleeved, and the brush head bristle planting part 111 is assembled to the bottom. After the fixation, the bristle planting member 111 and the transmission rod 112 are regarded as a whole, and 5 degrees of freedom are limited in the bristle housing 113, and only the rotational degree of freedom of the bristle planting member 111 using the axis of the transmission rod 112 (i.e., the axis of the bristle housing 113) as the rotational axis is not limited.

As shown in fig. 1 and 2, the brush holder 120 includes a brush holder housing 122, the brush head 110 is detachably connected to the top end of the brush holder housing 122, and the driving motor 121 is disposed in the top end of the brush holder housing 122 to drive and connect one end of the transmission rod 112 far away from the brush head bristle-planting member 111. Specifically, as shown in fig. 2, 3 and 4, an oil cup 123 filled with waterproof grease is disposed at the front end cover of the driving motor 121, the motor shaft 1211 of the driving motor 121 penetrates through the oil cup 123 from the side filled with waterproof grease by the oil cup 123 through the central hole of the oil cup, and is then fastened and connected with one end of the transmission rod 112 away from the brush head bristle planting member 111 through the coupling 14, a plurality of ribs 1231 are protruded outside the oil cup 123, and the plurality of ribs 1231 are in interference fit with the inside of the top end of the brush holder housing 122, so as to form a top end waterproof region of the brush holder housing 122 through the oil cup 123. This is because the outer side of the oil cup 123 has a circle of rib 1231 to perform interference fit with the inner side of the top end of the brush holder housing 122, which can prevent water from entering the interior of the main body (i.e. the position of the driving motor 122 and the main control circuit board 125 placed on the inner side of the brush holder housing 122) from between the oil cup 123 and the inner side of the top end of the brush holder housing 122, and meanwhile, the oil cup 123 is filled with waterproof grease, which can prevent water from entering the driving motor 121 from the motor shaft 1211 after entering the oil cup 123 through the gap between the center hole of the oil cup and the motor shaft 1211 of the driving motor 121, damaging the driving motor 121, and even entering the interior of the main body (i.e. the position of the main.

As shown in fig. 2 and 3, the brush head housing 122 includes a hard shell body 1221, and a soft adhesive layer 1222 is coated on a side surface of the hard shell body 1221 where the keys are disposed, so as to form a key waterproof region near the key module 127. That is, the waterproof of the key module 127 is a structure of soft rubber, and the soft rubber is encapsulated on the surface of one side of the hard shell main body 1221 where the keys are arranged by using an encapsulated injection molding process, so that the soft rubber layer 1222 and the outer side of the key module 127 are in interference fit to block water outside, thereby preventing water from entering the main body (i.e., the position of the inner main control circuit board 125 of the brush holder housing 122) through a gap near the key module.

As shown in fig. 2 and 3, the handle 120 further includes a handle fixing base 124, the handle base 124 is fixedly disposed at the bottom end of the handle housing 122, and a sealing ring 12 is disposed at the joint between the handle base 124 and the handle housing 122 to form a bottom waterproof region, so that water is blocked outside by the sealing ring 12 to prevent water from entering the interior of the main body (i.e., the position of the main control circuit board 125 inside the handle housing 122) from the joint between the handle base 124 and the handle housing 122. Through the waterproof setting in waterproof district in top, the waterproof district of button and the waterproof district in bottom for this product main part is whole body and need to reach IPX7 level waterproof.

As shown in fig. 1 and 2, the handle 120 further includes a main control circuit board 125 with a timing module (not shown) and a battery 126, the surface of the handle 120 is provided with a key module 127 and an indicator module 128, and the main control circuit board 125 is electrically connected to the driving motor 121, the timing module, the battery 126, the key module 127 and the indicator module 128 respectively. Through the setting of timing module, can make this electric toothbrush 100 have intelligent timing function, guarantee a reasonable time of brushing teeth, use this electric toothbrush 100 to brush teeth the period, will have the warning at every interval of time, can guarantee like this that the time of brushing teeth in every area of brushing teeth is relatively even. The key module 127 is used for controlling the on/off of the driving motor 121, the battery 126 is used for supplying power to the electric toothbrush 100, and the indicator light module 128 is used for timing reminding, charging reminding, low-power reminding, and the like. Therefore, to charge the battery 126, a USB charging interface 129 electrically connected to the main control circuit board 125 is disposed on the brush holder base 124. Meanwhile, in order to ensure the waterproof performance of the brush holder base 124, the bottom waterproof area further comprises a waterproof rubber plug 12 covered with the USB charging interface 129, the waterproof rubber plug 12 and the USB charging interface 129 are in interference fit, and when the waterproof rubber plug 12 is not charged, the waterproof rubber plug 12 can prevent water from entering the inside of the main body (namely, the position of the inner main control circuit board 125 of the brush holder shell 122) from the position of the brush holder base 124 through the USB charging interface 129. The USB charging interface 129 can select a Type-C interface, and certainly can be replaced by various USB interfaces such as other Mini-B interfaces or other charging interfaces with the same principle.

As shown in fig. 2, in order to fix the driving motor 121, the main control circuit board 125, and the battery 126 inside the handle case 122, the handle 120 further includes a holder 13, the driving motor 121 is fixed to one end of the holder 13, and the main control circuit board 125 and the battery 126 are fixed to the other end of the holder 13. In order to realize that the driving motor 121 is connected with the end of the transmission rod 112 far away from the bristle planting member 111 in a driving manner, the motor shaft 1211 of the driving motor 121 is tightly connected with the end of the transmission rod 112 far away from the bristle planting member 111 through the shaft coupling 14, that is, one end of the coupling 14 is sleeved and fixed on the motor shaft 1211 of the driving motor 121, the other end of the coupling 14 is sleeved and fixed on one end of the transmission rod 112 far away from the bristle planting member 111, or in order to facilitate the quick connection between the other end of the coupling 14 and the end of the transmission rod 112 far away from the bristle planting member 111, the two are connected by the insertion connection way in this embodiment, as shown in fig. 2, a cross plug is formed at one end of the transmission rod 112 away from the bristle-implanted part 111, and a cross slot adapted to the cross plug is formed at the other end of the connection sleeve 14, so that the cross plug is correspondingly plugged into the cross slot to realize quick connection between the two. The brush head 110 of the embodiment of the utility model is detachably connected to the top end of the brush handle 120, and the detachable connection can be a screw thread connection or a lock connection, so that the brush head 110 can be rapidly installed or detached on the top end of the brush handle 120, and the brush head 110 can be replaced arbitrarily according to actual needs.

Example two

The second embodiment of the present invention provides an electric toothbrush, this electric toothbrush only lies in with the difference of electric toothbrush 100 in the first embodiment, as shown in fig. 5, the brush head 210 is the bending brush head in this embodiment, i.e. the brush head shell 213 is the bending cylinder structure, the transmission rod 212 includes the short rod body 2121 and the long rod body 2122, the short rod body 2121 and the brush head shell 213 carry out the normal running fit, the one end of the short rod body 2121 is fixed with the brush head bristle planting part 211 in a sleeved manner, the other end of the short rod body 2121 is fixed with the first bevel gear 2123 in a sleeved manner, the one end of the long rod body 21 is connected in a driven manner by the driving motor, the other end of the long rod body 2122 is fixed with the second bevel gear 2124 in a sleeved manner, the second bevel gear 2124 is connected in a meshed manner with the first bevel gear 2123, so that the long rod.

As shown in fig. 5, the brush head housing 213 in this embodiment may be composed of a first half shell and a second half shell, and when assembling, the bearing 214 may be sleeved on the short rod body 2121, and then the short rod body 2121 and the long rod body 2122 may be respectively placed at corresponding positions in the first half shell, and the limiting bosses 21221 at the two ends of the assembled long rod body 2122 are located at the two ends of the limiting step 2131 in the brush head housing 213, so that the movement of the long rod body 2122 in the axial direction in the brush head housing 213 is limited, and the assembled long rod body 2122 has 5 degrees of freedom in the brush head housing a, and the degree of freedom only using the axial line of the long rod body 2122 as the rotation center is not limited. The assembled short rod body 2121 is in fit relation with one end surface of the bearing 214 due to a limit boss (not labeled in the figure) near one end of the bevel gear, the other end surface of the bearing 214 is limited by a limit step 2131 in the brush head housing 213, and the limit of the bevel gear end from the long rod body 2122, the short rod body 2121 has 5 degrees of freedom limitation, and the degree of freedom of rotation with the axis of the short rod body 2121 as the rotation center is not limited. One end of the short rod body 2121 penetrates into the central hole of the brush head bristle-planting part 211, and the fixed brush head bristle-planting part 211 and the short rod body 2121 can be seen as a whole. Finally, the first half-shell and the second half-shell are connected together by ultrasonic welding of plastic parts, so that the assembly of the whole brush head 210 can be completed.

The brush head of electric toothbrush that this embodiment provided, it includes that the brush head plants the hair piece, transfer line and brush first shell, place in the shell of brush head in the transfer line, and transfer line and brush first shell carry out normal running fit, the outside that the one end of transfer line outwards protrudes and extends to brush first shell, in order to cup joint fixed brush head and plant the hair piece, the transfer line is kept away from the one end that the brush head planted the hair piece and is carried out the drive with electric toothbrush's brush holder and be connected, make the brush head plant the hair piece and rotate along with the axle center of transfer. Thus, when the electric toothbrush adopting the brush head is used for brushing teeth for other people or pets, only the brush handle of the electric toothbrush needs to be held, one end of the brush head is stretched into an oral cavity needing to be cleaned (fingers do not need to stretch into the oral cavity to protect fingers), and the brush head can work by controlling the driving motor, so that the brush head hair-planting part rotates around the axis of the brush head shell along with the transmission rod, teeth in the oral cavity are cleaned in all directions by the brush head hair-planting part, and the wider contact surface formed by the flowing cleaning capacity (controllable strength) generated by the electric toothbrush and the rotation of the brush head hair-planting part can more comprehensively take care of each tooth surface and tooth gaps, and dental plaque is effectively removed. Therefore, the technical scheme can effectively solve the technical problems that the strength of the conventional toothbrush is difficult to control and the cleaning effect is not ideal when the conventional toothbrush is used for brushing teeth for other people or pets, and the fingers of people are not protected when the conventional finger sleeve type toothbrush is used.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in the embodiments without departing from the principles and spirit of the invention, and the scope of the invention is to be accorded the full scope of the claims.

Claims

1. The utility model provides an electric toothbrush's brush head, its characterized in that, the brush head includes that the brush head plants hair spare, transfer line and first shell of brush, place in the transfer line in the first shell of brush, just the transfer line with first shell of brush carries out normal running fit, the outside protrusion of one end of transfer line extends to the outside of first shell of brush is in order to cup joint fixedly the brush head plants hair spare, the transfer line is kept away from the one end that the brush head planted hair spare drives with electric toothbrush's brush holder and is connected, makes the brush head plant hair spare along with the transfer line round the axle center of first shell of brush rotates.

2. The brushhead of claim 1, wherein the brushhead implant includes a cylindrical body and bristles on the outer side wall of the cylindrical body.

3. The brushhead of claim 1, wherein the drive rod is in rotational engagement with the brushhead housing through a bearing.

4. A brushhead of claim 3, wherein the outer ring of the bearing is fixed to the inside of the brushhead housing at an end adjacent the brushhead bristles by an interference fit.

5. A brushhead of claim 3, wherein the inner ring of the bearing is securely attached to the end of the drive rod adjacent the brushhead bristle body by an interference fit.

6. The brush head of claim 1, wherein the brush head housing is of a straight cylindrical construction.

7. The brush head of claim 1, wherein the brush head housing is an angled cylindrical structure.

8. The toothbrush head as claimed in claim 7, wherein the transmission rod comprises a short rod body and a long rod body, the short rod body is rotatably engaged with the toothbrush head casing, the toothbrush head bristle-planting member is fixedly sleeved at one end of the short rod body, a first bevel gear is fixedly sleeved at the other end of the short rod body, the toothbrush handle is drivingly connected with one end of the long rod body, a second bevel gear is fixedly sleeved at the other end of the long rod body, and the second bevel gear is meshed with the first bevel gear, so that the long rod body is driven by the toothbrush handle to drive the short rod body to synchronously rotate.