Electric toothbrush head and electric toothbrush

Abstract

This utility model discloses an electric toothbrush head and an electric toothbrush, relating to the field of electric toothbrush technology. The electric toothbrush head includes a brush head, a connector, and a power component. The brush head includes a handle and bristles at one end of the handle, with a first insertion hole at the end of the handle away from the bristles. The connector is inserted into the first insertion hole, and its outer wall has multiple limiting blocks spaced circumferentially at the end of the connector near the brush head. The limiting blocks are interference-fitted with the first insertion hole. A second insertion hole is formed at the end of the connector away from the brush head. The power component has an output shaft inserted into the second insertion hole. The technical solution provided by this utility model involves incorporating a brush head, connector, and power component into the electric toothbrush head. The interference fit between the connector and the first insertion hole via the limiting blocks prevents loosening between the connector and the handle, thereby reducing the problem of excessive noise generated by the electric toothbrush during operation.

Description

Technical Field

[0001] This utility model relates to the field of electric toothbrush technology, and in particular to an electric toothbrush head and an electric toothbrush. Background Technology

[0002] An electric toothbrush is a type of toothbrush that uses electricity to vibrate the brush head. The rapid rotation or vibration of the motor motor causes the brush head to vibrate at high frequencies, instantly breaking down toothpaste into fine foam that deeply cleans between teeth. Simultaneously, the vibration of the bristles promotes blood circulation in the mouth and massages the gum tissue. However, in current technology, the connection between the brush head and the connector in electric toothbrushes is relatively loose, which can easily generate significant noise during operation. Utility Model Content

[0003] The main purpose of this utility model is to provide an electric toothbrush head and an electric toothbrush, which aims to solve the problem of excessive noise generated by electric toothbrushes during operation.

[0004] To achieve the above objectives, the present invention provides an electric toothbrush head comprising: a toothbrush head, a connector, and a power component. The toothbrush head includes a handle and bristles at one end of the handle, with a first insertion hole at the end of the handle away from the bristles. The connector is inserted into the first insertion hole, and the outer wall of the connector is provided with multiple limiting blocks. The multiple limiting blocks are circumferentially spaced at the end of the connector near the toothbrush head, and the multiple limiting blocks are interference-fitted with the first insertion hole. A second insertion hole is formed at the end of the connector away from the toothbrush head. The power component has an output shaft, which is inserted into the second insertion hole.

[0005] In one embodiment, the connector includes a body, a limiting part, and a base arranged sequentially along the axial direction. The first insertion hole includes a first hole segment, a second hole segment, and a third hole segment arranged sequentially along the axial direction. The body is inserted into the first hole segment, the limiting part is inserted into the second hole segment, and the base is inserted into the third hole segment. The limiting block is disposed on the outer wall of the body.

[0006] In one embodiment, the first hole is located at the end of the second hole near the bristles, and the inner diameter of the first hole gradually decreases from the second hole towards the bristles; the third hole is located at the end of the second hole near the power member, and the inner diameter of the third hole is larger than the inner diameter of the second hole, so that a limiting step is formed at the junction of the third hole and the second hole. When the base is inserted into the third hole and abuts against the limiting step, the inner diameter of the third hole gradually increases from the second hole towards the power member.

[0007] In one embodiment, the outer wall of the limiting part is provided with a limiting protrusion ring, and the inner wall of the second hole section has a limiting groove that cooperates with the limiting protrusion ring. When the limiting part is inserted into the second hole section, the limiting protrusion ring is disposed in the limiting groove.

[0008] In one embodiment, the second socket includes a first cavity and a second cavity arranged sequentially along the axial direction and communicating with each other. The second cavity is located at one end of the first cavity near the power member. The output shaft has a first output segment and a second output segment arranged sequentially along the axial direction. The second output segment is located at one end of the first output segment near the power member. The first output segment is located in the first cavity, and the second output segment is located in the second cavity.

[0009] In one embodiment, the first output section is interference-fitted with the first cavity, and the inner wall of the first cavity has a clearance groove that extends axially.

[0010] In one embodiment, the connector further includes a buckle protruding from the inner wall of the second cavity, the buckle having a gap with the inner wall of the second cavity, the buckle being able to swing within the gap, and the buckle extending from the inner wall of the second cavity toward the power member.

[0011] In one embodiment, the buckle has a protrusion on the side near the output shaft, and the side wall of the second output section has a groove that mates with the protrusion. The protrusion is inserted into the groove and abuts against the groove wall.

[0012] In one embodiment, the outer wall of the connector is further provided with a rib, which is located at one end of the connector near the toothbrush head. The rib extends radially outward from the outer wall of the connector, and the inner wall of the first insertion hole is provided with a slot that mates with the rib. The rib is inserted into the slot.

[0013] This utility model also proposes an electric toothbrush, including the electric toothbrush head described in any of the above.

[0014] The technical solution of this utility model adopts a toothbrush head, a connector, and a power component in the electric toothbrush head. The toothbrush head includes a handle and bristles at one end of the handle. The end of the handle away from the bristles has a first insertion hole for the connector to be inserted into. The connector is inserted into the first insertion hole. The outer wall of the connector has a plurality of circumferentially spaced limiting blocks. The connector is interference-fitted with the first insertion hole through the limiting blocks. The end of the connector away from the toothbrush head has a second insertion hole. The output shaft of the power component is inserted into the second insertion hole, so that the power component can control the vibration of the toothbrush head through the connector. Through the interference fit between the connector and the first insertion hole, the connector and the handle are limited by the limiting blocks and are not easy to loosen, thereby reducing the noise generated by the electric toothbrush during operation to a certain extent. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0016] Figure 1 A schematic diagram of the structure of an embodiment of the electric toothbrush head provided by this utility model;

[0017] Figure 2 for Figure 1 Sectional view at point AA;

[0018] Figure 3 An exploded view of an embodiment of the electric toothbrush head provided by this utility model;

[0019] Figure 4 An exploded view of another embodiment of the electric toothbrush head provided by this utility model;

[0020] Figure 5 for Figure 2 Sectional view at point BB;

[0021] Figure 6 for Figure 2 Sectional view at CC;

[0022] Figure 7 for Figure 2 Sectional view at point DD.

[0023] Explanation of icon numbers:

[0024] 100. Electric toothbrush head; 1. Toothbrush head; 11. Brush handle; 12. Brush bristles; 13. First insertion hole; 131. Limiting step; 132. Limiting groove; 133. Slot; 2. Connector; 21. Limiting block; 22. Second insertion hole; 221. Clearance groove; 23. Body; 24. Limiting part; 241. Limiting protrusion ring; 25. Base; 26. Buckle; 27. Protrusion rib; 3. Power component; 31. Output shaft; 311. First output section; 312. Second output section.

[0025] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0026] 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 of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0027] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0028] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0029] This utility model proposes an electric toothbrush head 100.

[0030] Please see Figure 1-7In one embodiment of this utility model, the electric toothbrush head 100 includes: a toothbrush head 1, a connector 2, and a power component 3. The toothbrush head 1 includes a handle 11 and bristles 12 disposed at one end of the handle 11. A first insertion hole 13 is provided at the end of the handle 11 away from the bristles 12. The connector 2 is inserted into the first insertion hole 13. A plurality of limiting blocks 21 are provided on the outer wall of the connector 2. The plurality of limiting blocks 21 are circumferentially spaced at the end of the connector 2 near the toothbrush head 1. The plurality of limiting blocks 21 are interference-fitted with the first insertion hole 13. A second insertion hole 22 is opened at the end of the connector 2 away from the toothbrush head 1. The power component 3 has an output shaft 31, which is inserted into the second insertion hole 22.

[0031] In this embodiment, the toothbrush head 1 includes a handle 11 and bristles 12 disposed at one end of the handle 11. The electric toothbrush cleans teeth through the bristles 12. A first insertion hole 13 is opened at the end of the handle 11 away from the bristles 12. A connector 2 is inserted into the first insertion hole 13. The inner contour of the first insertion hole 13 and the outer contour of the connector 2 are generally tapered so that the connector 2 can be easily inserted into the first insertion hole 13. The connector 2 has a first pivot, and its outer wall is provided with multiple limiting blocks 21. These limiting blocks 21 are circumferentially spaced around the first pivot, and their outer circumferential surfaces lie in the same cylindrical reference plane. The central axis of this cylindrical reference plane coincides with the first pivot and the axial direction of the first insertion hole 13. When the connector 2 is inserted into the first insertion hole 13, the inner diameter of the first insertion hole 13 at the position corresponding to the limiting block 21 is slightly smaller than the diameter of the cylindrical reference plane, allowing the limiting block 21 to have an interference fit with the first insertion hole 13. This interference fit prevents the connector 2 from becoming loose with the brush handle 11 during electric toothbrush use, thus avoiding noise caused by insufficient connection between the connector 2 and the brush handle 11. The power component 3 uses an electric motor or other drive device to provide power for the vibration of the brush head through the output shaft 31. The output shaft 31 is inserted into the connector 2 through the second insertion hole 22 and transmits power to the brush handle 11 through the connector 2, thereby driving the toothbrush head 1 to vibrate. The interference fit between the connector 2 and the brush handle 11 can also increase the stability of the transmission structure.

[0032] The technical solution of this utility model is achieved by incorporating a toothbrush head 1, a connector 2, and a power component 3 into an electric toothbrush head 100. The toothbrush head 1 includes a handle 11 and bristles 12 at one end of the handle 11. The end of the handle 11 away from the bristles 12 has a first insertion hole 13 for the connector 2 to be inserted into. The connector 2 is inserted into the first insertion hole 13. The outer wall of the connector 2 has multiple circumferentially spaced limiting blocks 21. The connector 2 is press-fitted with the first insertion hole 13 through the limiting blocks 21. The end of the connector 2 away from the toothbrush head 1 has a second insertion hole 22. The output shaft 31 of the power component 3 is inserted into the second insertion hole 22, so that the power component 3 can control the vibration of the toothbrush head 1 through the connector 2. Through the press-fit between the connector 2 and the first insertion hole 13, the connector 2 and the handle 11 are limited by the limiting blocks 21 and are not easy to loosen, thereby reducing the problem of excessive noise generated by the electric toothbrush during operation.

[0033] See Figure 2 , 4 In one embodiment, the connector 2 includes a body 23, a limiting part 24, and a base 25 arranged sequentially along the axial direction. The first insertion hole 13 includes a first hole segment, a second hole segment, and a third hole segment arranged sequentially along the axial direction. The body 23 is inserted into the first hole segment, the limiting part 24 is inserted into the second hole segment, and the base 25 is inserted into the third hole segment. A limiting block 21 is disposed on the outer wall of the body 23. In this embodiment, the diameter of the first hole segment is smaller than the diameter of the second hole segment, which is smaller than the diameter of the third hole segment, so that the first insertion hole 13 is generally tapered. The outer diameter of the body 23 is smaller than the outer diameter of the limiting part 24, which is smaller than the outer diameter of the base 25, so that the outer contour of the connector 2 is generally tapered. The outer contour of the connector 2 and the inner contour of the first insertion hole 13 can cooperate with each other, so that the connector 2 can be accommodated in the first insertion hole 13.

[0034] In one embodiment, a first hole segment is located at the end of the second hole segment near the bristles 12, and the inner diameter of the first hole segment gradually decreases from the second hole segment toward the bristles 12. A third hole segment is located at the end of the second hole segment near the power member 3, and the inner diameter of the third hole segment is larger than that of the second hole segment, so that a limiting step 131 is formed at the junction of the third hole segment and the second hole segment. When the base 25 is inserted into the third hole segment, it abuts against the limiting step 131, and the inner diameter of the third hole segment gradually increases from the second hole segment toward the power member 3. The first insertion hole 13 has multiple hole segments for correspondingly accommodating multiple parts of the connector 2, and each part of the connector 2 has a limiting structure. The body 23 is limited to the first hole segment by the limiting block 21, the limiting part 24 is limited to the second hole segment by the limiting protrusion ring 241, and the base 25 is limited to the third hole segment by the limiting step 131. The limiting step 131 is used to limit the relative position of the base 25 in the first socket 13. Whether the base 25 abuts against the limiting step 131 is used to determine whether the connector 2 is inserted into the first socket 13.

[0035] See Figure 2 , 3 In one embodiment, the outer wall of the limiting part 24 is provided with a limiting protrusion 241, and the inner wall of the second hole section has a limiting groove 132 that cooperates with the limiting protrusion 241. When the limiting part 24 is inserted into the second hole section, the limiting protrusion 241 is disposed in the limiting groove 132. The limiting protrusion 241 is a protrusion structure that surrounds the outer peripheral wall of the limiting part 24. The protrusions can be arranged continuously in a ring or multiple protrusions can be arranged at intervals in a ring. When the connector 2 is inserted into the first insertion hole 13, the limiting protrusion 241 is accommodated in the limiting groove 132. Through the cooperation between the limiting protrusion 241 and the limiting groove 132, the axial position of the limiting part 24 in the second hole section can be restricted.

[0036] See Figure 2 , 3 In one embodiment, the second socket 22 includes a first cavity and a second cavity arranged sequentially along the axial direction and communicating with each other. The second cavity is located at the end of the first cavity near the power member 3. The output shaft 31 has a first output segment 311 and a second output segment 312 arranged sequentially along the axial direction. The second output segment 312 is located at the end of the first output segment 311 near the power member 3. The first output segment 311 is located in the first cavity, and the second output segment 312 is located in the second cavity. The first cavity and the second cavity are used to correspondingly accommodate the first output segment 311 and the second output segment 312 of the output shaft 31. When the output shaft 31 is inserted into the second socket 22, the power member 3 can drive the toothbrush head 1 to vibrate through the connector 2. The inner diameter of the first cavity is smaller than the inner diameter of the second cavity to facilitate the insertion of the output shaft 31 into the second socket 22.

[0037] See Figure 2 , 7 In one embodiment, the first output segment 311 is interference-fitted with the first cavity, and the inner wall of the first cavity has a clearance groove 221 that extends axially. The outer contour dimension of the first output segment 311 is slightly larger than the inner contour dimension of the first cavity, so that the first output segment 311 can be interference-fitted with the first cavity, thereby confining the first output segment 311 within the first cavity and reducing the noise generated when the electric toothbrush is working. The clearance groove 221 is used to form a clearance space within the first cavity, thereby ensuring that the first output segment 311 can be interference-fitted with the first cavity while facilitating the insertion of the first output segment 311 into the first cavity, and preventing the output shaft 31 from being difficult to install or remove in the second insertion hole 22 due to excessive insertion and removal force.

[0038] In one embodiment, the connector 2 further includes a latch 26 protruding from the inner wall of the second cavity. A gap exists between the latch 26 and the inner wall of the second cavity, allowing the latch 26 to swing within the gap. The latch 26 extends from the inner wall of the second cavity toward the power member 3. The latch 26 is used to continuously abut against the outer wall of the output shaft 31 through its own elasticity. The gap between the latch 26 and the inner wall of the second cavity provides deformable space for the latch 26, enabling it to swing elastically within the second cavity.

[0039] In one embodiment, the latch 26 has a protrusion on the side near the output shaft 31, and the side wall of the second output section 312 has a groove that mates with the protrusion. The protrusion is inserted into the groove and abuts against the groove wall. The groove is located on the outer wall of the second output section 312 and extends circumferentially along the second output section 312. When the output shaft 31 is inserted into the second insertion hole 22, the latch 26 can be engaged in the groove, and the output shaft 31 and the connector 2 are mutually limited by the cooperation of the latch 26 and the groove.

[0040] See Figure 3 , 6 In one embodiment, the outer wall of the connector 2 is further provided with a rib 27. The rib 27 is located at one end of the connector 2 near the toothbrush head 1 and extends radially outward from the outer wall of the connector 2. The inner wall of the first insertion hole 13 is provided with a slot 133 that mates with the rib 27, and the rib 27 is inserted into the slot 133. The mate between the rib 27 and the slot 133 can restrict the rotation of the connector 2 in the first insertion hole 13, improve the power transmission efficiency of the connector 2, thereby increasing the swing amplitude of the toothbrush head 1 and improving the cleaning efficiency of the electric toothbrush.

[0041] This utility model also proposes an electric toothbrush, which includes the electric toothbrush head 100 of any of the above embodiments. The specific structure of the electric toothbrush head 100 is as described in the above embodiments. Since this electric toothbrush adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here. Specifically, the electric toothbrush, through the interference fit between the connecting member 2 and the toothbrush head 1 in the brush head, and the interference fit between the output shaft 31 and the connecting member 2, makes the force transmission structure of the electric toothbrush more stable during operation, and the various structures are less prone to loosening, thereby reducing the noise generated by the electric toothbrush during operation.

[0042] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. An electric toothbrush head, characterized in that, include: A toothbrush head, the toothbrush head including a handle and bristles at one end of the handle, the end of the handle away from the bristles having a first insertion hole; A connector, inserted into the first socket, has multiple limiting blocks on its outer wall, the limiting blocks being circumferentially spaced at the end of the connector near the toothbrush head, the limiting blocks being interference-fitted with the first socket, and a second socket being formed at the end of the connector away from the toothbrush head; and A power component having an output shaft that is inserted into the second socket.

2. The electric toothbrush head as described in claim 1, characterized in that, The connector includes a body, a limiting part, and a base arranged sequentially along the axial direction. The first insertion hole includes a first hole segment, a second hole segment, and a third hole segment arranged sequentially along the axial direction. The body is inserted into the first hole segment, the limiting part is inserted into the second hole segment, and the base is inserted into the third hole segment. The limiting block is provided on the outer wall of the body.

3. The electric toothbrush head as described in claim 2, characterized in that, The first hole is located at the end of the second hole near the bristles, and the inner diameter of the first hole gradually decreases from the second hole towards the bristles. The third hole is located at the end of the second hole near the power component, and the inner diameter of the third hole is larger than that of the second hole, so that a limiting step is formed at the junction of the third hole and the second hole. When the base is inserted into the third hole and abuts against the limiting step, the inner diameter of the third hole gradually increases from the second hole towards the power component.

4. The electric toothbrush head as described in claim 3, characterized in that, The outer wall of the limiting part is provided with a limiting protrusion ring, and the inner wall of the second hole section has a limiting groove that cooperates with the limiting protrusion ring. When the limiting part is inserted into the second hole section, the limiting protrusion ring is located in the limiting groove.

5. The electric toothbrush head as described in claim 1, characterized in that, The second socket includes a first cavity and a second cavity arranged sequentially along the axial direction and connected to each other. The second cavity is located at the end of the first cavity near the power component. The output shaft has a first output segment and a second output segment arranged sequentially along the axial direction. The second output segment is located at the end of the first output segment near the power component. The first output segment is located in the first cavity, and the second output segment is located in the second cavity.

6. The electric toothbrush head as described in claim 5, characterized in that, The first output section is interference-fitted with the first cavity, and the inner wall of the first cavity has a clearance groove that extends axially.

7. The electric toothbrush head as described in claim 5, characterized in that, The connector also includes a buckle protruding from the inner wall of the second cavity, with a gap between the buckle and the inner wall of the second cavity, the buckle being able to swing within the gap, and the buckle extending from the inner wall of the second cavity toward the power component.

8. The electric toothbrush head as described in claim 7, characterized in that, The buckle has a protrusion on the side near the output shaft, and the side wall of the second output section has a slot that mates with the protrusion. The protrusion is inserted into the slot and abuts against the wall of the slot.

9. The electric toothbrush head as described in any one of claims 1 to 8, characterized in that, The outer wall of the connector is also provided with a rib. The rib is located at one end of the connector near the toothbrush head and extends radially outward from the outer wall of the connector. The inner wall of the first insertion hole is provided with a slot that mates with the rib, and the rib is inserted into the slot.

10. An electric toothbrush, characterized in that, Includes an electric toothbrush head as described in any one of claims 1 to 9.

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