Toothbrush head and electric toothbrush

Abstract

The utility model belongs to the technical field of electric toothbrushes, and particularly relates to a toothbrush head and an electric toothbrush, the toothbrush head is provided with a brush handle part, a transmission connector and a bristle part, the transmission connector comprises an oscillation transmission part connected with one end of the brush handle part and a bristle connecting part detachably connected with the bristle part; the other end of the brush handle part is connected with an operating handle of the electric toothbrush; the operating handle controls the transmission connector through the brush handle part to drive the bristle part to generate oscillating motion, the bristle part comprises a brush disc and a plurality of bristles fixed to one side of the brush disc, and the other side of the brush disc is provided with a first sliding connection part detachably connected to the transmission connector. And the bristle connecting part of the transmission connector is provided with a second sliding connecting part which is in sliding connection with the first sliding connecting part. Compared with the condition that the whole toothbrush head needs to be replaced when the toothbrush head of the existing electric toothbrush is replaced, the electric toothbrush has the advantages that the bristle part of the toothbrush head is detachably replaced, only the bristle part of the toothbrush head is replaced, and the replacement cost is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of electric toothbrush technology, specifically relating to a toothbrush head and an electric toothbrush. Background Technology

[0002] Currently, electric toothbrushes on the market typically consist of a detachable and replaceable brush head and a control handle that serves as the central operating point. The brush head is usually disposable and needs to be replaced after a period of use.

[0003] However, replaceable brush heads for electric toothbrushes are expensive to manufacture and relatively costly, making replacements costly for consumers and easily leading to complaints. Furthermore, during use, only the bristles typically wear down; since current brush heads have a one-piece design with the bristles and handle, the entire head must be discarded when replacing it, resulting in resource waste. Utility Model Content

[0004] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a toothbrush head and an electric toothbrush, thereby solving the problem that the replacement cost of the toothbrush head of the existing electric toothbrush is high and the need to replace the whole head causes resource waste.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A toothbrush head includes a handle portion, a transmission connector, and a bristle portion. The transmission connector includes an oscillation transmission portion connected to one end of the handle portion and a bristle connecting portion detachably connected to the bristle portion.

[0007] The other end of the brush handle is connected to the operating handle of the electric toothbrush;

[0008] The operating handle controls the transmission connector via the brush handle portion to drive the bristle portion to produce an oscillating motion, wherein...

[0009] The bristle portion includes a brush disc and a plurality of bristles fixed to one side of the brush disc. The other side of the brush disc has a first sliding connection portion that is detachably connected to the transmission connector. The bristle connection portion of the transmission connector has a second sliding connection portion that is slidably connected to the first sliding connection portion. The brush disc is detachably connected to the bristle connection portion by means of the detachable sliding connection of the first sliding connection portion and the second sliding connection portion.

[0010] In one embodiment of this utility model, the first sliding connection part is a sliding block protruding from the brush disk toward the transmission connector, and the second sliding connection part is a sliding groove provided on the bristle connection part and corresponding to the sliding block; or the first sliding connection part is a sliding groove provided on the side of the brush disk facing the transmission connector, and the second sliding connection part is a sliding block provided on the bristle connection part and corresponding to the sliding groove; the brush disk is detachably connected to the bristle connection part by inserting and withdrawing the sliding block into and out of the sliding groove.

[0011] In one embodiment of this utility model, the sliding block and the sliding groove are interference-fitted, and the interference force of the interference fit is greater than the centrifugal oscillation force when the bristles swing.

[0012] In one embodiment of this utility model, the sliding groove is provided with a locking part, and the sliding block is provided with a locking groove part corresponding to the locking part; when the sliding block is inserted into the sliding groove, the locking part engages with the locking groove part; when the sliding block is pulled out of the sliding groove, the locking part disengages from the locking groove part.

[0013] In one embodiment of this utility model, the locking part is a locking pin protruding from the side wall of the sliding groove.

[0014] In one embodiment of the present invention, the transmission connector includes a locking hole extending in a direction perpendicular to the sliding groove, and the locking pin is installed in the locking hole; the locking hole overlaps with the side wall of the sliding groove, so that the locking hole forms a notch on the side wall of the sliding groove; the locking pin protrudes from the side wall of the sliding groove at the notch to form the locking part.

[0015] In one embodiment of this utility model, the sliding groove is a trapezoidal groove with a bottom width greater than the opening width, and the sliding block is a trapezoidal protrusion corresponding to the trapezoidal groove.

[0016] In one embodiment of this utility model, the brush handle is provided with an oscillation transmission shaft for connecting the oscillation transmission part of the transmission connector to the drive shaft of the operating handle, and the drive shaft controls the oscillation of the bristles via the oscillation transmission shaft and the oscillation transmission part of the transmission connector.

[0017] To achieve the above objectives, the present invention also adopts the following technical solution:

[0018] An electric toothbrush includes: an operating handle comprising a grip portion and a drive shaft mounted on the top of the grip portion; and the toothbrush head mounted on the drive shaft.

[0019] Compared to existing electric toothbrushes where the entire toothbrush head needs to be replaced when changing the brush head, this invention makes the brush head bristles detachable and replaceable, allowing only the bristles to be replaced, thus reducing the cost of replacing the toothbrush head and the waste of resources. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a three-dimensional structural view of a toothbrush head according to a specific embodiment of the present invention.

[0022] Figure 2 This is an exploded view of a toothbrush head according to a specific embodiment of the present invention.

[0023] Figure 3 This is a front view of a toothbrush head according to a specific embodiment of the present invention.

[0024] Figure 4 This is a top view of a toothbrush head according to a specific embodiment of the present invention.

[0025] Figure 5 This is a side view of a toothbrush head according to a specific embodiment of the present invention.

[0026] Figure 6 yes Figure 5 A magnified perspective view of part A.

[0027] Figure 7 This is a top-view diagram showing the connection between the bristles of the toothbrush head and the transmission connector in a specific embodiment of this utility model.

[0028] Figure 8 This is a schematic diagram of the connection between the bristles of the toothbrush head and the transmission connector from a bottom view, according to a specific embodiment of this utility model.

[0029] Figure 9 (a) is a front view of the toothbrush head's drive connector; (b) is a bottom view of the toothbrush head's drive connector; (c) is... Figure 9 (a) BB cross section.

[0030] Figure 10 (a) is a rear view of the bristles of the toothbrush head; (b) is a bottom view of the bristles of the toothbrush head; (c) is... Figure 10 (a) CC section view.

[0031] Explanation of reference numerals in the attached figures:

[0032] 100. Brush handle; 110. Housing; 111. Head housing; 112. Handle housing; 120. Handle connecting bushing; 121. Bushing mounting hole; 130. Transmission shaft; 131. Shaft body; 132. Swing transmission pin; 133. Swing support pin; 140. First limiting pin; 150. Second limiting pin; 151. Second limiting hole;

[0033] 200, bristle section; 210, brush plate; 211, first sliding connection section; 212, slot section; 220, bristles;

[0034] 300. Transmission connector; 310. Vibration transmission part; 311. Transmission groove; 312. Limiting groove; 313. Positioning groove; 320. Brush connecting part; 321. Second sliding connecting part; 322. Snap-fit ​​part; 323. Snap-fit ​​pin; 324. Snap-fit ​​pin hole; 325. Notch. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model. Furthermore, it should be understood that the specific embodiments described herein are only for illustration and explanation of the present utility model and are not intended to limit the present utility model.

[0036] In this utility model, unless otherwise stated, directional terms such as "up", "down", "left", "right", "front", and "back" generally refer to the up, down, left, and right directions in the actual use or working state of the device, specifically the directions shown in the accompanying drawings; "one end" generally refers to the end of the component that is close to the operating handle of the electric toothbrush, and "the other end" generally refers to the end of the component that is far away from the operating handle of the electric toothbrush.

[0037] It should be noted that the order of description of the following embodiments is not intended to limit the preferred order of the embodiments of this application. Furthermore, the descriptions of each embodiment in the following embodiments have their own emphasis; for parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0038] Electric toothbrushes can be classified into rotary, sweeping, and sonic types according to their oscillation methods. Rotary toothbrushes oscillate by having the brush head bristles rotate back and forth around their central axis, controlled by the handle. Sweeping toothbrushes oscillate by having the brush head oscillate up and down, controlled by the handle. Sonic toothbrushes oscillate by having the brush head vibrate at a high frequency, controlled by the handle.

[0039] Reference Figures 1 to 10 The toothbrush head disclosed in this utility model example is a toothbrush head suitable for rotary electric toothbrushes, but it is not limited thereto. The toothbrush head of this utility model can also be used for various other types of electric toothbrushes, such as vibrating or sonic toothbrushes.

[0040] Specifically, continue to refer to Figures 1 to 10 The toothbrush head includes a handle portion 100, a transmission connector 300, and a bristle portion 200. The transmission connector 300 includes an oscillation transmission part 310 connected to one end of the brush handle part 100 and a bristle connecting part 320 detachably connected to the bristle part 200; the other end of the brush handle part 100 is used to connect to the operating handle (not shown) of the electric toothbrush; the operating handle controls the transmission connector 300 via the brush handle part 100 to drive the bristle part 200 to generate oscillating motion (e.g., oscillating oscillation), wherein the bristle part 200 includes a brush disc 210 and a plurality of bristles 220 fixed to one side of the brush disc 210, and the other side of the brush disc 210 is provided with a first sliding connecting part 211 that can be detachably connected to the transmission connector 300; the bristle connecting part 320 of the transmission connector 300 has a second sliding connecting part 321 that is slidably connected to the first sliding connecting part 211; the brush disc 210 is detachably connected to the bristle connecting part 320 by the detachable sliding connection of the first sliding connecting part 211 and the second sliding connecting part 321.

[0041] Therefore, by making the bristles of the toothbrush head detachable and replaceable (i.e., detachably connected to the bristle connection part 320 of the transmission connector 300), only the bristles of the toothbrush head need to be replaced, reducing the cost of toothbrush head replacement and the waste of resources. In addition, by making the detachable connection a sliding connection, the convenience of toothbrush head replacement can be improved, and disassembly and installation can be achieved simply by pulling and sliding.

[0042] The driving and transmission structure and method of this utility model will be described in detail below.

[0043] Reference Figures 1 to 6The brush handle portion 100 includes a housing 110, a handle connecting bushing 120, and a transmission shaft 130. The housing 110 includes a hollow cylindrical handle housing 112 with openings at both ends and a head housing 111 vertically connected to the handle housing 112, with the head housing 111 communicating with the handle housing 112. The head housing 111 is formed as a cylindrical housing with one open side and the other closed side. The oscillation transmission portion 310 of the transmission connector 300 is installed inside the head housing 111 through the opening. The handle connecting bushing 120 is installed in a bushing mounting hole 121 at one end of the handle housing 112, which is used to connect with the drive shaft support bushing of the operating handle to install the toothbrush head onto the operating handle. The transmission shaft 130 is oscillatingly housed within the handle housing 112, and the drive shaft of the operating handle is inserted into the handle housing 112 and connected to one end of the transmission shaft 130. The operating handle controls the drive shaft to oscillate reciprocally, thereby driving the transmission shaft 130 to oscillate reciprocally.

[0044] Reference Figure 2 and Figure 6 The transmission shaft 130 includes a shaft body 131, a swing transmission pin 132, and a swing support pin 133. The swing transmission pin 132 and the swing support pin 133 are mounted on the other end of the shaft body 131, and one end of the shaft body 131 has a drive hole for connection with a drive shaft. Specifically, the swing support pin 133 and the drive hole are on the same straight line on the shaft body 131, and the swing transmission pin 132 is located above the swing support pin 133 on the shaft body 131. This arrangement allows the drive shaft to drive the transmission shaft 130 to reciprocate around the swing support pin 133 (the lower side of the shaft body 131).

[0045] Furthermore, referring to Figure 2 , Figures 6 to 8 The oscillation transmission part 310 of the transmission connector 300 is a rotating shaft inserted into the head housing 111. The rotating shaft has an axially extending transmission groove 311 on its side. When the electric toothbrush is not in operation, the transmission groove 311 of the rotating shaft opens at the other end facing the handle housing 112. Additionally, the swing transmission pin 132 is a T-shaped pin. Its long section, parallel to the handle housing 112, is inserted into the shaft body 131, and its short section, perpendicular to the long section, extends from the other end of the handle housing 112 into the head housing 111 and is rotatably connected to the transmission groove 311 of the oscillation transmission part 310. When the drive shaft drives the transmission shaft 130 to reciprocate around the swing support pin 133 (the lower side of the shaft body 131), the T-shaped swing transmission pin 132 causes the oscillation transmission part 310 of the transmission connector 300 to reciprocate, thereby driving the bristle part 200 connected to the bristle connection part 320 of the transmission connector 300 to reciprocate. Specifically, the swing support pin 133 drives the oscillation transmission part 310 to reciprocate through the transmission groove 311. More specifically, with Figure 3For example, the swing support pin 133 is oriented... Figure 3 When the axis deflects to the left, it will push the oscillation transmission part 310 to rotate clockwise; conversely, the swing support pin 133 will swing to the left. Figure 3 When the brush tip deflects to the right, it will drive the oscillation transmission section 310 to rotate counterclockwise. This process is repeated to achieve the reciprocating rotation of the bristle section 200.

[0046] In addition, continue to refer to Figure 2 , Figures 6 to 8 The bottom center of the oscillation transmission part 310 is provided with a positioning groove 313, and the closed end of the head housing 111 is provided with a first limiting hole (not shown) corresponding to the positioning groove 313. The brush handle part 100 is also provided with a first limiting pin 140. The first limiting pin 140 is inserted into the first limiting hole and the positioning groove 313 to limit the rotation of the transmission connector 300 around the first limiting pin 140 and avoid rotational deviation. This improves the oscillation stability of the bristles and enhances the cleaning ability of the electric toothbrush.

[0047] Furthermore, referring to Figure 2 , Figure 4 , Figures 6 to 8 The sidewall of the oscillation transmission part 310 is also provided with a limiting groove 312 parallel to the opening end of the head housing 111. The limiting groove 312 is preferably a fan-shaped groove, and the center line of the fan-shaped groove overlaps with the axis of the transmission shaft 130. The sidewall of the head housing 111 is provided with a second limiting hole 151 corresponding to the limiting groove 312, and the brush handle part 100 is also provided with a second limiting pin 150. The second limiting pin 150 is inserted into the second limiting hole 151 and the limiting groove 312. This can limit the swing of the transmission connector 300 and prevent the transmission connector 300 from rotating excessively and damaging the toothbrush head. Specifically, let's take... Figure 3 For example, when the oscillation transmission part 310 rotates clockwise, it will eventually be unable to continue rotating clockwise because the inner wall of the left side of the limiting groove is stopped by the second limiting pin 150; conversely, when the oscillation transmission part 310 rotates counterclockwise, it will eventually be unable to continue rotating counterclockwise because the inner wall of the right side of the limiting groove is stopped by the second limiting pin 150.

[0048] The following details the detachable connection structure between the bristle part 200 and the bristle connection part 320 of the transmission connector 300 (i.e., the connection structure between the first sliding connection part 211 and the second sliding connection part 321).

[0049] In one specific embodiment, reference is made to Figure 2 , Figures 7 to 10 The first sliding connection portion 211 is a sliding block protruding from the brush disk 210 toward the transmission connector 300, and the second sliding connection portion 321 is a sliding groove provided in the bristle connection portion 320 and corresponding to the sliding block, as shown in the figure. Figure 7 and Figure 8(The dashed arrow in the figure indicates the direction in which the sliding block of the brush plate 21 inserts into the sliding groove.) The brush plate 210 is detachably connected to the bristle connecting part 320 by inserting and withdrawing the sliding block into the sliding groove. Preferably, the sliding groove is an open sliding groove with openings at both ends, and the sliding block can be inserted into and withdrawn from the sliding groove from either end. This facilitates the disassembly and installation of the bristle part 200.

[0050] Alternatively, the first sliding connection 211 can be a sliding groove located on the side of the brush disk 210 facing the transmission connector 300, and the second sliding connection 321 can be a sliding block located on the bristle connection 320 and corresponding to the sliding groove. This invention does not limit the specific location of the sliding block and sliding groove on either the brush disk 210 or the bristle connection 320.

[0051] In one specific embodiment, the sliding block and the sliding groove are interference-fitted. The interference force of the interference fit is preferably greater than the centrifugal oscillation force when the bristles swing, so as to prevent the sliding block from disconnecting from the sliding groove during toothbrush use.

[0052] In one specific embodiment, reference is made to Figure 2 , Figures 6 to 10 The sliding groove has a locking part 322, and the sliding block has a locking groove part 212 corresponding to the locking part 322. When the sliding block is inserted into the sliding groove, the locking part 322 engages with the locking groove part 212; when the sliding block is pulled out of the sliding groove, the locking part 322 and the locking groove part 212 disengage. By setting the locking part 322 and the locking groove part 212, the connection stability between the transmission connector 300 and the bristle part 200 is further improved. Because the locking part 322 and the locking groove part 212 engage, it is more difficult for the sliding block and the sliding groove to detach, reducing the risk of disconnection between the sliding block and the sliding groove during toothbrush use.

[0053] In one specific embodiment, reference continues to be made to... Figure 2 , Figures 6 to 10 The snap-fit ​​part 322 is a snap-fit ​​pin 323 protruding from the side wall of the sliding groove. The snap-fit ​​pin 323 can be integrally formed with the sliding groove, or it can be installed on the bristle connection part 320 in the following ways.

[0054] Specifically, the transmission connector 300 includes a locking hole 324 extending in a direction perpendicular to the sliding groove, and a locking pin 323 is installed in the locking hole 324. The locking hole 324 overlaps with the side wall of the sliding groove, forming a notch 325 on the side wall of the sliding groove. The locking pin 323 protrudes from the side wall of the sliding groove at the notch 325, thus forming a locking portion 322. Therefore, by molding each part individually and then assembling it, mass production of the parts can be facilitated.

[0055] Furthermore, there can be four locking portions 322, each formed in pairs at the corners of the side walls and bottom wall of the sliding groove. Correspondingly, there can also be four locking portions 212. This further improves the connection stability between the transmission connector 300 and the bristle portion 200.

[0056] In one specific embodiment, reference continues to be made to... Figure 2 , Figures 6 to 10 The sliding groove is a trapezoidal groove with a bottom width greater than the opening width, and the sliding block is a trapezoidal protrusion corresponding to the groove. Therefore, because the opening width of the sliding groove is less than the bottom width, it prevents the sliding block from detaching from the groove opening during toothbrush use.

[0057] In one specific embodiment, the transmission connection 300 and the brush handle 100 are preferably made of plastic to facilitate manufacturing. The brush disc 210 of the brush head 200 is preferably made of environmentally friendly materials, such as bamboo.

[0058] This utility model also discloses an electric toothbrush, comprising: an operating handle (not shown), which includes a grip portion and a drive shaft mounted on the top of the grip portion; and the toothbrush head of the above embodiment mounted on the drive shaft. The operating handle drives the toothbrush head to generate an oscillating motion through the drive shaft to clean teeth. The operating handle can be a known electric toothbrush operating handle.

[0059] Throughout this specification, the terms "an embodiment," "embodiment," or "specific embodiment" refer to a particular feature, structure, or characteristic described in connection with an embodiment that is included in at least one embodiment of this application, but not necessarily in all embodiments. Therefore, the various representations of the phrases "in one embodiment," "in an embodiment," or "in a specific embodiment" in different places throughout this specification do not necessarily refer to the same embodiment. Furthermore, a particular feature, structure, or characteristic of any specific embodiment of this application may be combined with one or more other embodiments in any suitable manner. It should be understood that other variations and modifications of the embodiments described and illustrated herein may be based on the teachings herein and will be considered part of the spirit and scope of this application.

[0060] It should also be understood that one or more of the elements shown in the figures may be implemented in a more separate or more integrated manner, or may even be removed because they are inoperable in certain circumstances or provided because they may be useful for a particular application.

[0061] Furthermore, unless otherwise expressly stated, any arrows in the accompanying drawings should be considered illustrative only and not limiting. Additionally, unless otherwise stated, the term "or" as used herein is generally intended to mean "and / or". Where a term is anticipated to provide a separation or combination capability that is unclear, a combination of components or steps will also be considered as indicated.

Claims

1. A toothbrush head, characterized in that, It comprises a brush handle, a transmission connector, and a bristle section. The transmission connector includes an oscillation transmission section connected to one end of the brush handle and a bristle connecting section detachably connected to the bristle section. The other end of the brush handle is connected to the operating handle of the electric toothbrush; the operating handle controls the transmission connector via the brush handle to drive the bristles to produce oscillating motion; The bristle portion includes a brush disc and a plurality of bristles fixed to one side of the brush disc. The other side of the brush disc has a first sliding connection portion that is detachably connected to the transmission connector. The bristle connection portion of the transmission connector has a second sliding connection portion that is slidably connected to the first sliding connection portion. The brush disc is detachably connected to the bristle connection portion by means of the detachable sliding connection of the first sliding connection portion and the second sliding connection portion.

2. The toothbrush head according to claim 1, characterized in that, The first sliding connection part is a sliding block protruding from the brush disk toward the transmission connector, and the second sliding connection part is a sliding groove provided in the bristle connection part and corresponding to the sliding block; or the first sliding connection part is a sliding groove provided on the side of the brush disk facing the transmission connector, and the second sliding connection part is a sliding block provided in the bristle connection part and corresponding to the sliding groove. The brush plate is detachably connected to the bristle connection part by inserting and withdrawing the sliding block into the sliding groove.

3. The toothbrush head according to claim 2, characterized in that, The sliding block and the sliding groove are interference-fitted, and the interference force of the interference fit is greater than the centrifugal oscillation force when the bristles swing.

4. The toothbrush head according to claim 2, characterized in that, The sliding groove is provided with a locking part, and the sliding block is provided with a locking part corresponding to the locking part; When the sliding block is inserted into the sliding groove, the locking part engages with the locking part; When the sliding block is pulled out of the sliding groove, the locking part is released from the locking part.

5. The toothbrush head according to claim 4, characterized in that, The locking part is a locking pin that protrudes from the side wall of the sliding groove.

6. The toothbrush head according to claim 5, characterized in that, The transmission connector includes a locking pin hole extending in a direction perpendicular to the sliding groove, and the locking pin is mounted in the locking pin hole; The locking pin hole overlaps with the side wall of the sliding groove, so that the locking pin hole forms a notch on the side wall of the sliding groove; The locking pin protrudes from the sidewall of the sliding groove at the notch to form the locking part.

7. The toothbrush head according to any one of claims 2-6, characterized in that, The sliding groove is a trapezoidal groove with a bottom width greater than the opening width, and the sliding block is a trapezoidal protrusion corresponding to the trapezoidal groove.

8. The toothbrush head according to any one of claims 1-6, characterized in that, The brush handle portion is provided with an oscillation transmission shaft for connecting the oscillation transmission portion of the transmission connector to the drive shaft of the operating handle. The drive shaft controls the oscillation of the bristles portion via the oscillation transmission shaft and the oscillation transmission portion of the transmission connector.

9. An electric toothbrush, characterized in that, have: An operating handle, comprising a grip portion and a drive shaft mounted on top of the grip portion; and The toothbrush head according to any one of claims 1-8 is mounted on the drive shaft.

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