CN211325790U

CN211325790U - Electric tooth brush

Info

Publication number: CN211325790U
Application number: CN201922123532.5U
Authority: CN
Inventors: 林赣生; 张文灿
Original assignee: Hi P Xiamen Precision Plastic Products Co ltd
Current assignee: Hi P Xiamen Precision Plastic Products Co ltd
Priority date: 2019-12-02
Filing date: 2019-12-02
Publication date: 2020-08-25
Anticipated expiration: 2029-12-02

Abstract

The utility model relates to an electric toothbrush, including vibrating motor and brush head, vibrating motor's output shaft and brush head pass through coupling assembling and are connected, the brush head on including the cooperation nestification in the outer connection basal portion of coupling assembling, coupling assembling is last to have flat portion, flat portion nestification is in connection basal portion, flat portion has local or holistic distribution in the distribution direction of brush hair in the brush head. The utility model discloses can let vibrating motor's the fine transmission of vibration effect to the brush hair position, especially be fit for U type electric toothbrush's brush head. Its vibrating motor can realize the bradyseism in the casing, increases the comfort level of using.

Description

Electric tooth brush

Technical Field

The utility model relates to a motor-driven toothbrush, in particular to an electric toothbrush.

Background

The electric toothbrush is a high-efficiency tooth cleaning device, and the principle of the electric toothbrush is that a vibration motor drives a brush head to vibrate at high frequency on teeth, and meanwhile, toothpaste is helped to quickly bubble on the teeth, so that the teeth are cleaned efficiently. The prior art electric toothbrush generally includes a handle and a brush head, and a motor for vibration, a charging circuit board, a power supply, and the like are provided in the handle. The output shaft of the vibrating motor is fixed with the brush head to drive the brush head to vibrate. Because vibrating motor generally is fixed in among the handle, can directly transmit the vibration to the handle in vibrating motor's vibration process, no matter to the stability of product itself to and use comfort can all cause the influence. On the other hand, in the prior art, because the output shaft of the vibration motor is simply connected with the tail of the brush head, the vibration cannot be well transmitted to the brush head, particularly for the U-shaped brush head, the U-shaped brush head covers the upper and lower whole pairs of teeth, the coverage area is wide, the size is large, and the vibration cannot be transmitted to the whole U-shaped brush head only through simple connection between the vibration motor and the brush head.

Disclosure of Invention

One of the main purposes of the utility model is to better transmit the vibration from the vibration motor to the brush head.

The second main purpose of the utility model is to alleviate the vibration on the electric toothbrush handle and increase the comfort level.

In order to achieve the purpose, the utility model provides an electric toothbrush, which comprises a vibration motor and a brush head, wherein the output shaft of the vibration motor is connected with the brush head through a connecting component,

the brush head comprises a connecting base which is matched and nested outside the connecting component,

the connecting component is provided with a flat part which is nested in the connecting base part, and the flat part has partial or whole distribution in the distribution direction of the bristles in the brush head.

The electric toothbrush also has the following optimized structure:

the brush head is preferably a U-shaped brush head. The bristles on the brush head are preferably made of silica gel.

The electric toothbrush still further comprises a shell, the shell is provided with a through hole, an output shaft of the vibration motor penetrates out of the through hole to be connected with the brush head, an end cover covers one end of the output shaft of the body of the vibration motor, a vibration damping sealing ring is arranged between the end cover, the output shaft and the shell, the vibration damping sealing ring comprises a first sealing end, a second sealing end and a folded part which can be folded in the circumferential direction, the first sealing end is in sealing fit between the through hole and the output shaft, the second sealing end is in sealing fit between the shell and the end cover, and the folded part is connected between the first sealing end and the second sealing end.

The shell and the vibration reduction sealing ring are fixed in the circumferential direction through limiting matching.

The shell is formed by connecting an upper shell cover and a lower shell cover.

Still include PCBA circuit board and rechargeable battery in the casing, PCBA circuit board on included charging module, vibrating motor control module and electric quantity indicator module, vibrating motor control module by on-off control, be provided with on the casing with switch complex button and with the electric quantity indicator complex mounting groove in the electric quantity indicator module.

The shell further comprises a support, and the support is provided with a first fixing part for fixing the vibration motor, a second fixing part for fixing the battery and a third fixing part for fixing the PCBA.

The charging module is electrically connected with the power supply through the USB circuit board, the bottom of the shell is provided with a charging port, and the USB interface of the USB circuit board is fixed in the charging port.

Coupling assembling including even first connecting piece and second connecting piece, the flat portion be in first connecting piece on, first connecting piece has the internal thread groove, the second connecting piece have with internal thread groove complex external screw thread surface, first connecting piece passes through screw-thread fit with the second connecting piece and is connected, second connecting piece bottom have with vibrating motor output shaft complex fixed slot, vibrating motor's output shaft is inserted in the fixed slot to with second connecting piece fixed connection.

The first connecting piece and the second connecting piece are preferably provided with matched retaining structures. Furthermore, the stopping structure include complex stopping groove and stopping bulge, stopping groove, stopping bulge set up respectively on first connecting piece, second connecting piece, the stopping bulge gets into the stopping groove and realizes the stopping after first connecting piece is screwed in the second connecting piece.

The utility model discloses can let vibrating motor's the fine transmission of vibration effect to the brush hair position, especially be fit for U type electric toothbrush's brush head. Its vibrating motor can realize the bradyseism in the casing, increases the comfort level of using.

Drawings

Fig. 1 is a schematic structural view of a U-shaped electric toothbrush.

Fig. 2 is a schematic view of the internal structure of the U-shaped electric toothbrush.

Fig. 3 is an exploded view of the U-shaped electric toothbrush.

Fig. 4 is a partial schematic view of a U-shaped electric toothbrush.

FIG. 5 is a schematic view of a flat portion of the connector assembly.

FIG. 6 is a schematic structural diagram of a stop-and-go structure.

In the figure: 100. the toothbrush comprises a brush head, a handle 200, a handle 101, bristles 102, a first connecting piece 103, a second connecting piece 104, a flat part 105, a screw 106, a backstop groove 107, a backstop bulge 108, a connecting base 201, a shell upper cover 202, a vibrating motor 203, a rechargeable battery 204, a USB circuit board 205, a PCBA circuit board 206, a button 207, an electric quantity prompting lamp 208, a damping sealing ring 209, an end cover 210, a support 211, a shell lower cover 212, a USB sealing element 213, a first sealing end 214, a folded part 215, a circumferential limiting part 216 and a second sealing end.

Detailed Description

The utility model discloses an aspect increases the vibration damping structure and alleviates the vibration on the electric toothbrush handle in the handle, increases use comfort. On the other hand, the connection structure between the output shaft of the vibration motor and the brush head is improved to better transmit vibration from the vibration motor to the brush head so as to improve the cleaning capability of the toothbrush. The invention will be further explained with reference to the following embodiments and the accompanying drawings.

In the present invention, descriptions of directions such as "up", "down", "left", "right", etc. are relative positions rather than absolute positions.

Hereinafter, a U-shaped electric toothbrush is taken as an example. As shown in fig. 1, the U-shaped electric toothbrush is composed of two parts, a head 100 and a handle 200. The handle 200 is mainly composed of a housing, a vibration motor 202 arranged in the housing, a PCBA circuit board 205, a rechargeable battery 203, a USB circuit board 204 and a bracket 210.

As shown in fig. 3, the housing is formed by connecting an upper housing cover 201 and a lower housing cover 211, in this embodiment, the upper housing cover 201 and the lower housing cover 211 are fixed by snap-fit, a waterproof sealing ring can be disposed at the snap-fit position for waterproof sealing, and the upper housing cover 201 and the lower housing cover 211 can also be connected by other means, such as screwing, plugging, and the like.

As shown in fig. 2 and 3, the bracket 210 in the housing has a first fixing portion for fixing the vibration motor 202, a second fixing portion for fixing the battery 203, and a third fixing portion for fixing the PCBA circuit board 205, and in this embodiment, the vibration motor 202 is fixed to the middle of the bracket 210, and the PCBA circuit board 205 and the battery 203 are fixed to both sides of the vibration motor 202, respectively. PCBA circuit board 205 is last to have included charging module, vibrating motor control module and electric quantity indicator lamp module, and vibrating motor control module is by on-off control, be provided with on the casing with switch complex button 206 and with electric quantity indicator lamp 207 complex mounting groove in the electric quantity indicator lamp module. The charging module is electrically connected with the USB circuit board 204 for power supply, the bottom of the lower cover 211 of the shell is provided with a charging port, the USB interface of the USB circuit board 204 is fixed in the charging port, and in order to prevent the USB interface from water entering, the USB sealing element 212 can be inserted into the USB interface in a matching way. The PCBA circuit board 205 employed in the present embodiment is commercially available or designed and manufactured according to existing circuit design principles. The control method can be obtained by carrying out design programming according to the control principle.

The body of the vibration motor 202 is covered with an end cover 209 at one end of the output shaft, the shell is provided with a through hole, and the output shaft of the vibration motor 202 sequentially passes through the bracket 210, the end cover 209 and the through hole of the shell and is finally connected with the brush head 100.

In order to reduce the vibration of the handle 200, a vibration damping sealing ring 208 is arranged between the end cover 209, the output shaft and the shell. As shown in fig. 4, the damping gasket 208 includes a first sealing end 213, a second sealing end 216, and a circumferentially foldable fold 214, the first sealing end 213 being sealingly fitted between the through bore and the output shaft, the second sealing end 216 being sealingly fitted between the housing and the end cap 209, the fold 214 being connected between the first sealing end 213 and the second sealing end. The housing upper cover 201 and the vibration damping seal ring 208 are fixed in a position-limited fit in the circumferential direction by the circumferential position-limiting portion 215. The folded portion 214 can absorb and reduce the transmission of vibration, thereby reducing the influence of the motor on the housing and reducing the vibration on the handle 200.

Referring to fig. 3 and 4, the output shaft of the vibration motor 202 is connected with the brush head 100 through the connecting assembly, the brush head 100 includes a connecting base 108 which is fittingly nested outside the connecting assembly, the connecting assembly has a flat part 104, the flat part 104 is nested in the connecting base 108, the flat part 104 has a local or overall distribution in the brush head 100 in the distribution direction of the bristles 101, in this embodiment, the flat part 104 is spread along both sides of the U-shape brush head 100, which enhances the transmission of vibration, and in order to increase the better transmission effect, it can be completely distributed below the whole bristles 101. The housing is fixed with the damping gasket 208 in the circumferential direction by a limit fit. The connecting assembly comprises a first connecting piece 102 and a second connecting piece 103, the flat part 104 is arranged on the first connecting piece 102, the first connecting piece 102 is provided with an internal thread groove, the second connecting piece 103 is provided with an external thread surface matched with the internal thread groove, the first connecting piece 102 is connected with the second connecting piece 103 in a thread matching way, the bottom of the second connecting piece 103 is provided with a fixing groove matched with an output shaft of the vibration motor 202, and the output shaft of the vibration motor 202 is inserted into the fixing groove and fixedly connected with the second connecting piece 103. The first connecting piece 102 and the second connecting piece 103 are provided with a matched retaining structure, the retaining structure comprises a retaining groove 106 and a retaining protrusion 107, the retaining groove 106 and the retaining protrusion 107 are respectively arranged on the first connecting piece 102 and the second connecting piece 103, and the retaining protrusion 107 enters the retaining groove 106 to achieve retaining after the first connecting piece 102 is screwed in the second connecting piece 103.

When using, vibrating motor 202 will vibrate better transmission to brush head 100 through coupling assembling to in this process, owing to increased damping sealing ring 208, its influence to handle 200 has reduced, and the brush hair 101 of the silica gel material on the cooperation brush head 100 produces better experience when using.

Claims

1. An electric toothbrush comprises a vibration motor and a brush head, and is characterized in that an output shaft of the vibration motor is connected with the brush head through a connecting component,

2. The powered toothbrush of claim 1, wherein said head is a U-shaped head.

3. The electric toothbrush according to claim 1 or 2, wherein the bristles on the head are made of silicone.

4. The electric toothbrush of claim 1, further comprising a housing having a through hole formed therein, the output shaft of the vibration motor being connected to the brush head by passing through the through hole, the body of the vibration motor having an end cap at one end of the output shaft, a vibration damping gasket being disposed between the end cap, the output shaft and the housing, the vibration damping gasket comprising a first sealing end, a second sealing end and a fold portion foldable in a circumferential direction, the first sealing end being sealingly engaged between the through hole and the output shaft, the second sealing end being sealingly engaged between the housing and the end cap, the fold portion being connected between the first sealing end and the second sealing section.

5. The powered toothbrush as defined in claim 4, wherein the housing and the vibration-reducing seal ring are secured circumferentially by a positive fit.

6. The electric toothbrush according to claim 4, further comprising a PCBA circuit board and a rechargeable battery, wherein the PCBA circuit board comprises a charging module, a vibration motor control module and a power indicator module, the vibration motor control module is controlled by a switch, and the housing is provided with a key matched with the switch and a mounting groove matched with the power indicator in the power indicator module.

7. The powered toothbrush as defined in claim 6, further comprising a bracket having a first fastening portion for fastening the vibration motor, a second fastening portion for fastening the battery, and a third fastening portion for fastening the PCBA.

8. The electric toothbrush according to claim 1, wherein the coupling assembly comprises a first coupling member and a second coupling member, the flat portion is formed on the first coupling member, the first coupling member has an internal thread groove, the second coupling member has an external thread surface engaged with the internal thread groove, the first coupling member is engaged with the second coupling member by a thread engagement, the bottom of the second coupling member has a fixing groove engaged with an output shaft of the vibration motor, the output shaft of the vibration motor is inserted into the fixing groove and fixedly coupled with the second coupling member.

9. The powered toothbrush as defined in claim 8, wherein the first connector and the second connector are provided with cooperating backstop structures.

10. The powered toothbrush as defined in claim 9, wherein the retaining structure includes a retaining groove and a retaining protrusion, the retaining groove and the retaining protrusion are respectively disposed on the first connecting member and the second connecting member, and the retaining protrusion enters the retaining groove to achieve retaining after the first connecting member is screwed in the second connecting member.