A toothbrush

Abstract

The utility model discloses a toothbrush, including handle and brush head, the handle is provided with the output shaft that reciprocating motion is followed the longitudinal axis of the toothbrush, the brush head includes the linkage assembly and cleaning unit of the shell and install in the shell, one end of linkage assembly is pressed and is driven by the output shaft, and the other end is provided with a knob part, the cleaning unit rotates and moves under the drive of knob part, wherein, the knob part is configured as elastic member and includes first position state and second position state, the knob part is elastically compressed and drives the cleaning unit and rotates along the first direction in the process of moving from first position state to second position state, in the process that the knob part elastically returns to first position state from second position state, the cleaning unit rotates along the second direction opposite with the first direction, thereby, the reciprocating rotary motion of cleaning unit can be realized through the pressing fit of output shaft and linkage assembly, and both need not fixed connection.

Description

Technical Field

[0001] This utility model relates to the field of personal hygiene products, and more specifically to a toothbrush. Background Technology

[0002] In existing technologies, toothbrush heads clean teeth by vibrating or rotating. However, vibration or shaking can only clean the surface of teeth and cannot deeply clean between teeth. The rotating part of the brush head is mostly adjusted by controlling the forward and reverse rotation of the motor to clean the surface of teeth and between teeth. Most of these rotation methods require the output shaft of the motor to be fixedly connected to the linkage component inside the brush head, which makes it inconvenient to disassemble and replace the brush head.

[0003] Therefore, a toothbrush with a rotatable, easily detachable brush head is needed. Utility Model Content

[0004] This utility model provides a toothbrush, including a handle and a brush head. The handle is provided with an output shaft that reciprocates along the longitudinal axis of the toothbrush. The brush head includes a housing, a linkage component, and a cleaning unit mounted on the housing. One end of the linkage component is driven by the output shaft, and the other end is provided with a toggle part. The cleaning unit rotates under the drive of the toggle part. The toggle part is constructed as an elastic element and includes a first position state and a second position state. During the process of moving from the first position state to the second position state, the toggle part elastically compresses and drives the cleaning unit to rotate along a first direction. During the process of the toggle part elastically returning from the second position state to the first position state, the cleaning unit rotates along a second direction opposite to the first direction.

[0005] Therefore, by making the actuating part an elastic element, the output shaft and the linkage component can achieve the reciprocating rotation of the cleaning unit through the pressing and engaging mechanism. The two do not need to be fixedly connected, which reduces the structural complexity and facilitates disassembly.

[0006] According to one aspect of this utility model, the linkage assembly includes a linkage base driven by the output shaft; the actuating part is disposed on the linkage base; when the output shaft approaches the cleaning unit along the longitudinal axis of the toothbrush, it presses against the linkage base to move the actuating part from a first position state to a second position state; when the output shaft moves away from the cleaning unit along the longitudinal axis of the toothbrush, the actuating part elastically returns from the second position state to the first position state. Thus, using the linkage base as a medium, the reciprocating motion of the output shaft along the toothbrush axis is transmitted to the actuating part, causing it to elastically compress and return to its initial position after the pressure disappears.

[0007] According to one aspect of this utility model, the linkage base includes a clamping part, the clamping part being provided with a pair of cantilever arms and a first limiting rod; the actuating part and the pair of cantilever arms are respectively provided with first limiting holes, and the first limiting rod passes through the first limiting holes in sequence to fix the actuating part to the linkage base. Thus, the actuating part will move and undergo elastic deformation when the linkage base is pressed.

[0008] According to one aspect of this invention, the linkage base further includes an abutment portion disposed at the end of the clamping portion away from the cleaning unit; the abutment portion is made of a cushioning material. This reduces the vibration felt during toothbrush use and improves the user experience.

[0009] According to one aspect of the present invention, the cleaning unit includes a central axis perpendicular to the longitudinal axis of the toothbrush; the cleaning unit is configured to rotate about the central axis.

[0010] According to one aspect of the present invention, the actuating part includes an elastic sheet body and a free end that cooperates with the cleaning unit; the cleaning unit includes a brush plate and bristles disposed on the brush plate; a locking part that cooperates with the free end is provided on the side of the brush plate opposite to the bristles. Thus, the cleaning unit can rotate under the drive of the actuating part through the cooperation between the free end and the locking part.

[0011] According to one aspect of the present invention, the engaging portion includes a communicating engaging channel and an engaging cavity; the engaging channel is configured to allow passage of the portion of the elastic sheet body near the free end; the engaging cavity is configured to confine the free end therein, so that the brush disc completely follows the movement of the free end. Thus, the cleaning unit can reciprocate under the drive of the actuating portion.

[0012] According to one aspect of the present invention, the engaging portion includes a communicating engaging channel and an engaging post; the engaging channel is configured to allow passage of the portion of the elastic sheet body near the free end; the engaging post is configured to sleeve the free end onto its sidewall, so that the brush disc completely follows the movement of the free end. Thus, the cleaning unit can reciprocate under the drive of the actuating portion.

[0013] According to one aspect of this invention, in a direction perpendicular to the brush plate, the width of the free end is greater than the width of the elastic sheet body. Therefore, the portion of the free end wider than the elastic sheet body can be further embedded in the locking cavity, making the fit between the free end and the locking cavity more secure.

[0014] According to one aspect of the present invention, the cleaning unit further includes a return spring; the return spring is configured to drive the brush disc to rotate in a second direction opposite to the first direction during the process of the actuating part elastically returning from the second position state to the first position state. Thus, even if the free end and the locking part are only in a pressing engagement, it can be ensured that the brush disc returns to its initial angle in the second direction after the pressing disappears.

[0015] According to one aspect of this utility model, the brush head includes a second limiting rod; the brush disc has a protrusion on the side opposite to the bristles, and a clearance space is provided on the sidewall of the protrusion; the second limiting rod passes through the housing and reaches the clearance space to prevent the brush disc from detaching from the housing. Thus, the connection between the cleaning unit and the housing of the brush head is more stable. Attached Figure Description

[0016] This invention will also be explained in more detail with the aid of the following drawings. These should be understood by way of example only and are not intended to limit the invention to the examples shown.

[0017] Figure 1 A structural diagram of the internal structure of the brush head according to a preferred embodiment of the present invention is shown;

[0018] Figure 2 A schematic diagram showing the different positions of the linkage component and the cleaning unit according to a preferred embodiment of the present invention is provided.

[0019] Figure 3 An exploded view of a brush head according to a preferred embodiment of the present invention is shown;

[0020] Figure 4 An exploded view of the brush head according to a preferred embodiment of the present invention is shown;

[0021] Figure 5 Two views of the toggle unit according to a preferred embodiment of the present invention are shown;

[0022] Figure 6 A partially enlarged view of the brush disk according to a preferred embodiment of the present invention is shown;

[0023] Figure 7 A partially enlarged view of the assembly structure of the brush plate and the housing according to a preferred embodiment of the present invention is shown.

[0024] List of reference numerals

[0025] 1. Brush head

[0026] 11 Second limit rod

[0027] 2 Output shaft

[0028] 3. Outer shell

[0029] 4 linkage components

[0030] 41. Actuating section

[0031] 411 Elastic sheet body

[0032] 412 Free End

[0033] 42 Linkage Base

[0034] 421 Clamping section

[0035] 421a Cantilever

[0036] 421b First limit rod

[0037] 422 Contact part

[0038] 5 Cleaning Units

[0039] 50 central axis

[0040] 51 Disk Brush

[0041] 511 Connector

[0042] 511a Card Connector

[0043] 511b SIM card slot

[0044] 512 Protrusion

[0045] 512a Give way space Detailed Implementation

[0046] The present invention will be further described below with reference to specific embodiments and accompanying drawings. More details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention can obviously be implemented in many other ways different from those described herein. Those skilled in the art can make similar extensions and derivations based on actual application situations without departing from the spirit of the present invention. Therefore, the scope of protection of the present invention should not be limited by the content of this specific embodiment.

[0047] Figure 1 A structural diagram of the internal structure of the brush head according to a preferred embodiment of the present invention is shown. Figure 2 A schematic diagram showing the different positions of the linkage component and the cleaning unit according to a preferred embodiment of the present invention is provided.

[0048] like Figure 1 The toothbrush shown includes a handle (not shown) and a rotatable brush head 1. The handle is provided with an output shaft 2 that reciprocates along the longitudinal axis L1 of the toothbrush. The output shaft 2 is driven by a motor inside the handle and extends into the interior of the brush head 1.

[0049] The brush head 1 includes a housing 3, a linkage component 4 mounted on the housing 3, and a cleaning unit 5, which is used to contact and clean the teeth. Figure 1 As shown, in this embodiment, the linkage component 4 also extends approximately along the longitudinal axis L1 of the toothbrush. One end of it is driven by the output shaft 2, and the other end is provided with a toggle part 41. The cleaning unit 5 rotates under the drive of the toggle part 41. Thus, the motion is transmitted from the output shaft 2 to the linkage component 4 to the cleaning unit 5.

[0050] Furthermore, such as Figure 2 As shown, the actuating part 41 is configured as an elastic element and includes a first position state ( Figure 2 a) and second position state ( Figure 2 b).

[0051] In the first position, the linkage component 4 is positioned low, and the actuating part 41 is in an uncompressed or only slightly compressed state. Subsequently, the linkage component 4 is pressed by the output shaft 2, and the actuating part 41 undergoes elastic compression or increases in elastic compression during its movement from the first position to the second position, which can drive the cleaning unit 5 to rotate along the first direction.

[0052] Upon reaching the second position state ( Figure 2 b) After that, the output shaft 2 moves back, and the pressure of the output shaft 2 on the linkage component 4 no longer or even does not contact the linkage component 4. At this time, the actuating part 41 releases energy and pushes the linkage component 4 back, elastically returning from the second position state to the first position state. The cleaning unit 5 also rotates in the second direction opposite to the first direction.

[0053] Therefore, by setting the actuating part 41 as an elastic element, the output shaft 2 and the linkage component 4 can achieve the reciprocating rotational motion of the cleaning unit 5 by pressing the actuating part 41 to store and release energy. The two do not need to be fixedly connected, which reduces the structural complexity and facilitates disassembly.

[0054] According to an exemplary embodiment of the present invention, such as Figure 1 and Figure 2 As shown, the linkage assembly 4 includes a linkage base 42 driven by the output shaft 2, and a toggle part 41 is disposed on the linkage base 42. When the output shaft 2 approaches the cleaning unit 5 along the longitudinal axis L1 of the toothbrush, it presses the linkage base 42 to move the toggle part 41 from a first position state to a second position state; when the output shaft 2 moves away from the cleaning unit 5 along the longitudinal axis L1 of the toothbrush, the toggle part 41 elastically returns from the second position state to the first position state. Thus, with the linkage base 42 as the medium, the reciprocating motion of the output shaft 2 along the toothbrush axis is transmitted to the toggle part 41, causing it to elastically compress and return to its initial position after the pressure disappears.

[0055] Figure 3 An exploded view of a brush head according to a preferred embodiment of the present invention is shown. The linkage base 42 includes a clamping portion 421 for fixing the actuating part 41. The clamping portion 421 is provided with a pair of cantilever arms 421a and a first limiting rod 421b. The actuating part 41 and the pair of cantilever arms 421a are respectively provided with first limiting holes 421c. During assembly, the actuating part 41 is first placed into the U-shaped space formed by the pair of cantilever arms 421a, and then the first limiting rod 421b is sequentially passed through the three aforementioned first limiting holes 421c to fix the actuating part 41 to the linkage base 42. Optionally, as... Figure 4 As shown, the actuating part 41 and the linkage base 42 are integrally cast. After assembly, the linkage component 4 can be inserted into the housing 3 from the bottom of the brush head 1.

[0056] Furthermore, such as Figure 3 As shown, the linkage base 42 also includes an abutment portion 422 disposed at the end of the clamping portion 421 away from the cleaning unit 5, the abutment portion 422 being made of a cushioning material. This reduces the vibration felt during toothbrush use and improves the user experience.

[0057] According to an exemplary embodiment of the present invention, such as Figure 3 As shown, the cleaning unit 5 includes a central axis 50 perpendicular to the longitudinal axis L1 of the toothbrush, and the cleaning unit 5 is configured to rotate around this central axis 50. During assembly, the cleaning unit 5 is also inserted into the corresponding receiving space of the housing 3 in a direction perpendicular to the longitudinal axis of the toothbrush. It should be noted that the central axis 50 here can also be a virtual axis, which is introduced only for the purpose of illustrating the installation and rotation direction of the cleaning unit 5.

[0058] According to an exemplary embodiment of the present invention, such as Figure 3 and Figure 5 As shown, the actuating part 41 includes an elastic sheet body 411 and a free end 412 that cooperates with the cleaning unit 5. The elastic sheet body 411 may be plate-shaped, connected to the linkage base 42 and extending toward the cleaning unit 5, and the free end 412 may be formed by curling the end of the elastic sheet body 411.

[0059] like Figure 3 and Figure 6 As shown, the cleaning unit 5 includes a brush plate 51 and brush bristles 52 disposed on the brush plate 51. The side of the brush plate 51 facing away from the brush bristles 52 is provided with a locking part 511 that cooperates with the free end 412. When the linkage base 42 is compressed and displaced, the elastic sheet body 411 will undergo elastic compression, and the free end 412 will press against the locking part 411, causing the cleaning unit 5 to rotate in the first direction.

[0060] Furthermore, such as Figure 6As shown, the snap-fit ​​portion 511 includes a snap-fit ​​channel 511a and a snap-fit ​​cavity 511b that are connected to each other. In an optional embodiment, the brush disk 51 has a protrusion 512 on the side facing away from the bristles 52, and the snap-fit ​​channel 511a and the snap-fit ​​cavity 511b are formed by slots in the protrusion 512.

[0061] The snap-fit ​​channel 511a is configured to allow passage of the portion of the elastic sheet body 411 near the free end 412, and the snap-fit ​​cavity 511b is configured to confine the free end 412 therein, so that the brush disk 51 completely follows the movement of the free end 412. Figure 6 As shown, optionally, the snap-fit ​​cavity 511b is a nearly fully enclosed circular space, and the free end 412 is also rolled into a circle. The diameters of the two are similar, thus allowing for a relatively tight fit. Therefore, when the linkage base 42 is no longer under pressure, the elastic sheet body 411 elastically recovers, the free end 412 is displaced, and it drives the snap-fit ​​part 411, causing the cleaning unit 5 to rotate in the second direction.

[0062] Furthermore, to make the fit between the free end 412 and the snap-fit ​​cavity 511b more secure, such as... Figure 5 As shown, in the direction perpendicular to the brush disk 51, the width of the free end 412 is greater than the width of the elastic sheet body 411, and the part of the free end 412 that is wider than the elastic sheet body 411 can be further embedded into the snap-fit ​​cavity 511b.

[0063] According to an exemplary embodiment of the present invention, the engaging portion 511 includes a communicating engaging channel 511a and an engaging post (not shown). In an optional embodiment, the brush disk 51 has a protrusion 512 and an engaging post on the side opposite to the bristles 52, and the engaging channel 511a is formed by a slot in the protrusion 512. The engaging post, adjacent to the outlet of the engaging channel 511a, is configured to sleeve the free end 412 onto its sidewall so that the brush disk 51 completely follows the movement of the free end 412.

[0064] According to an exemplary embodiment of the present invention, the cleaning unit 5 further includes a return spring (not shown); the return spring is configured to drive the brush disk 51 to rotate in a second direction opposite to the first direction during the process of the toggle part 41 elastically returning from the second position state to the first position state. Thus, even if the free end 412 and the locking part 511 are only in a pressing engagement, it can be ensured that the brush disk 51 returns to the initial angle in the second direction after the pressing disappears.

[0065] According to an exemplary embodiment of the present invention, such as Figure 7As shown, the brush head 1 includes a second limiting rod 11. The brush disc 51, on the side facing away from the bristles 52, has a protrusion 512 coaxial with the central axis 50. A clearance space 512a is provided on the side wall of the protrusion 512. The second limiting rod 11 passes radially through the housing 3 along the protrusion 512 to reach the clearance space 512a, preventing the brush disc 51 from detaching from the housing 3. This makes the connection between the cleaning unit 5 and the housing 3 more stable. It should be noted that the clearance space 512a should extend a certain distance circumferentially along the protrusion 512, so as not to affect the rotation of the brush disc 51.

[0066] While the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make possible variations and modifications without departing from the spirit and scope of the present invention. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the protection scope defined by the claims of the present invention.

Claims

1. A toothbrush, comprising a handle and a brush head, wherein the handle is provided with an output shaft that reciprocates along the longitudinal axis of the toothbrush, characterized in that: The brush head includes a housing and a linkage component and a cleaning unit mounted on the housing; One end of the linkage component is driven by the output shaft, and the other end is provided with a toggle part; The cleaning unit rotates under the drive of the actuating part; wherein... The actuating part is configured as an elastic element and includes a first position state and a second position state; The actuating part elastically compresses and drives the cleaning unit to rotate along the first direction during the process of moving from the first position state to the second position state; During the process of the actuating part elastically returning from the second position state to the first position state, the cleaning unit rotates in a second direction opposite to the first direction.

2. The toothbrush as described in claim 1, characterized in that: The linkage component includes a linkage base that is driven by the pressure of the output shaft; The actuating part is disposed on the linkage base; When the output shaft approaches the cleaning unit along the longitudinal axis of the toothbrush, it presses the linkage base to move the actuating part from the first position state to the second position state. When the output shaft moves away from the cleaning unit along the longitudinal axis of the toothbrush, the actuating part elastically returns from the second position state to the first position state.

3. A toothbrush as described in claim 2, characterized in that: The linkage base includes a clamping part; The clamping part is provided with a pair of cantilever arms and a first limiting rod; The actuating part and the pair of cantilever arms are respectively provided with first limiting holes, and the first limiting rod passes through the first limiting holes in sequence to fix the actuating part to the linkage base.

4. A toothbrush as described in claim 3, characterized in that: The linkage base also includes an abutment portion disposed at the end of the clamping portion away from the cleaning unit; The contact part is made of cushioning material.

5. A toothbrush as described in claim 1, characterized in that: The cleaning unit includes a central axis perpendicular to the longitudinal axis of the toothbrush; The cleaning unit is configured to rotate about the central axis.

6. A toothbrush as described in claim 5, characterized in that: The actuating part includes an elastic sheet body and a free end that cooperates with the cleaning unit; The cleaning unit includes a brush plate and brush bristles disposed on the brush plate; The side of the brush disc opposite to the bristles is provided with a locking part that engages with the free end.

7. A toothbrush as described in claim 6, characterized in that, The snap-fit ​​part includes a snap-fit ​​channel and a snap-fit ​​cavity that are connected to each other; The snap-fit ​​channel is configured to allow passage of the portion of the elastic sheet body near the free end; The snap-fit ​​cavity is configured to confine the free end therein so that the brush disk completely follows the movement of the free end.

8. A toothbrush as described in claim 6, characterized in that, The snap-fit ​​part includes a snap-fit ​​channel and a snap-fit ​​post that are connected to each other; The snap-fit ​​channel is configured to allow passage of the portion of the elastic sheet body near the free end; The snap-fit ​​post is configured to fit the free end onto its sidewall so that the brush disk completely follows the movement of the free end.

9. A toothbrush as described in claim 7, characterized in that: In the direction perpendicular to the brush disk, the width of the free end is greater than the width of the elastic sheet body.

10. A toothbrush as described in claim 6, characterized in that: The cleaning unit also includes a return spring; The return spring is configured to drive the brush to rotate in a second direction opposite to the first direction as the actuating part elastically returns from the second position state to the first position state.

11. The toothbrush as described in claim 6, characterized in that: The brush head includes a second limiting rod; The brush plate has a protrusion on the side opposite to the bristles, and the side wall of the protrusion has a clearance space. The second limiting rod passes through the housing to reach the clearance space to prevent the brush from detaching from the housing.

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