Electric toothbrush head and electric toothbrush

Abstract

The utility model relates to an electric toothbrush head and electric toothbrush, include: shell, inner shaft transmission subassembly, brush head and tail cover, the brush head sets up in the one end of shell, tail cover sets up in the other end of shell, inner shaft transmission subassembly sets up in the shell, inner shaft transmission subassembly includes the first transmission part, second transmission part and swing piece that connect with each other, one end of second transmission part is connected with the brush head, the other end of second transmission part is equipped with the connecting hole, the connecting hole is fixedly connected with the first transmission part. The utility model improves the structure of existing electric toothbrush head, and transmission subassembly sets up as the split type structure, and under the action of driving shaft, the brush head does the arc reciprocating motion around the central pivot steadily in succession, thereby can the motion track of transmission part be flexibly adjusted, makes the driving force of driving shaft steadily transmit to the brush head, makes the swing angle and frequency of brush head more stable, promotes user experience.

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] Existing electric toothbrushes utilize a drive component to generate high-frequency vibrations in the brush head, breaking down toothpaste into fine foam for deep cleaning between teeth. Simultaneously, the bristle vibrations promote blood circulation in the mouth and massage the gum tissue. However, the transmission structure of existing electric toothbrush heads is complex and unstable, resulting in inconsistent brush head oscillation arc and frequency, negatively impacting the user experience. Utility Model Content

[0003] This utility model provides an electric toothbrush head and an electric toothbrush, which solves the problems of unstable transmission, unstable oscillation arc and frequency of the brush head, and poor user experience in existing electric toothbrushes.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] An electric toothbrush head includes: a housing, an inner shaft drive assembly, a brush head, and a tail cap, wherein the brush head is disposed at one end of the housing, the tail cap is disposed at the other end of the housing, and the inner shaft drive assembly is disposed inside the housing;

[0006] The inner shaft transmission assembly includes a first transmission component, a second transmission component, and a swing component that are interconnected.

[0007] One end of the second transmission component is connected to the brush head, and the other end of the second transmission component is provided with a connecting hole, which is fixedly connected to the first transmission component;

[0008] The outer shell, which is used to accommodate the brush head, has a first protruding post inside.

[0009] The swing member has a first rotating hole and a second rotating hole at both ends, respectively. The first rotating hole is sleeved on the first protrusion; the second rotating hole is fixedly connected to the connecting hole of the second transmission member and the first transmission member.

[0010] The first transmission component is fitted with a spring, one end of which abuts against several limiting guide bones inside the outer shell, and the other end abuts against the tail of the first transmission component.

[0011] Preferably, the end of the first transmission component is configured as a semi-open "U" shaped cavity, the connecting hole of the second transmission component is inserted into the semi-open "U" shaped cavity, the second rotating hole of the swing component is disposed outside the semi-open "U" shaped cavity, and the three are fixed by a fixing pin.

[0012] Preferably, one end of the second transmission member is provided with a second protrusion, and the other end is provided with a connecting hole.

[0013] Preferably, the brush head includes bristles and a transmission seat, the transmission seat having a main shaft hole and an eccentric hole, the main shaft hole being located at the rotation center of the transmission seat;

[0014] The housing contains a rotating shaft connected to the main shaft hole, and the second protrusion of the second transmission component is inserted into the eccentric hole.

[0015] Preferably, a shock-absorbing buffer pad is provided at the connection between the second protrusion and the eccentric hole;

[0016] The transmission seat is provided with a slot, and the head pin is inserted into the slot.

[0017] Preferably, the tail end of the outer shell is provided with an elastic wall protrusion, an elastic semi-open circular retaining bone, and a handle mounting cavity; the tail cover is provided with a reverse buckle bone, a limiting bone, and a guide bone, and the buckling bone in the inner cavity of the tail cover is interlocked with the elastic wall protrusion at the tail end of the outer shell.

[0018] Preferably, the tail end of the first transmission component is provided with a screw suction component and an O-ring, the screw suction component is disposed at the end of the first transmission component, and the O-ring is sleeved on the outside of the tail end of the first transmission component;

[0019] The screw suction element is used to attach the drive shaft inside the toothbrush handle.

[0020] Preferably, the tail end of the first transmission component is further provided with a suction cup, which is used to adsorb the drive shaft inside the toothbrush handle.

[0021] Preferably, the first transmission component is provided with an annular locking structure, and the suction cup engages with the annular locking structure.

[0022] An electric toothbrush includes an electric toothbrush head as described above, and a toothbrush handle, wherein the tail end of the electric toothbrush head is inserted into the toothbrush handle;

[0023] The tail end of the first transmission component is provided with several positioning bones, which abut against the drive shaft of the toothbrush handle.

[0024] By implementing the above technical solutions, the following technical effects are achieved: The electric toothbrush head and electric toothbrush provided by this utility model improve the structure of existing electric toothbrush heads. The transmission component is set as a split structure, and a triangular linkage is formed by setting a first transmission component, a second transmission component, and a swing component. The second transmission component drives the swing component to swing in a fan shape under the drive of the first transmission component. The second transmission component is also eccentrically connected to the brush head. Under the action of the drive shaft, the brush head is smoothly and successively driven to make arc reciprocating motion around the central axis. This allows for flexible adjustment of the movement trajectory of the transmission component, so that the driving force of the drive shaft is smoothly transmitted to the brush head, making the swing angle and frequency of the brush head more stable and improving the user experience. Attached Figure Description

[0025] Figure 1 A schematic diagram of the electric toothbrush head provided by this utility model;

[0026] Figure 2 A cross-sectional view of the electric toothbrush head provided by this utility model;

[0027] Figure 3 This is a schematic diagram of the internal shaft transmission assembly provided by this utility model;

[0028] Figure 4 This is a schematic diagram of the connection between the inner shaft transmission assembly and the brush head provided by this utility model.

[0029] Figure 5 An exploded structural diagram of the inner shaft transmission assembly provided by this utility model;

[0030] Figure 6 An exploded structural diagram of the inner shaft transmission assembly provided by this utility model;

[0031] Figure 7 An exploded view of the electric toothbrush head provided by this utility model;

[0032] Figure 8 A schematic diagram of the structure of the brush head provided by this utility model;

[0033] Figure 9 A schematic diagram of the structure of the brush head provided by this utility model;

[0034] Figure 10-14 A schematic diagram of the outer shell provided for this utility model;

[0035] Figure 15 A cross-sectional view of the electric toothbrush head provided by this utility model;

[0036] Figure 16 This is a cross-sectional view of the electric toothbrush head provided by this utility model. Detailed Implementation

[0037] To better understand the technical solution of this utility model, the embodiments provided by this utility model are described in detail below with reference to the accompanying drawings.

[0038] like Figure 1-16 As shown, this embodiment provides an electric toothbrush head comprising: a housing 1, an inner shaft transmission assembly 3, a brush head 2, and a tail cap 4. The brush head 2 is disposed at one end of the housing 1, and the tail cap 4 is disposed at the other end of the housing 1. The inner shaft transmission assembly 3 is disposed within the housing 1. The inner shaft transmission assembly 3 includes a first transmission member 31, a second transmission member 32, and a swing member 33 connected to each other. One end of the second transmission member 32 is connected to the brush head 2, and the other end of the second transmission member 32 is provided with a connecting hole 321. The first transmission component 31 is fixedly connected to the outer shell 1, which is used to accommodate the brush head 2. The inner part of the outer shell 1 is provided with a first protrusion 10. The two ends of the swing component 33 are respectively provided with a first rotating hole 331 and a second rotating hole 332. The first rotating hole 331 is sleeved on the first protrusion 10. The second rotating hole 332 is fixedly connected to the connecting hole 321 of the second transmission component 32 and the first transmission component 31. The first transmission component 31 is sleeved with a spring 37. One end of the spring 37 abuts against several limiting guide bones inside the outer shell 1, and the other end abuts against the tail of the first transmission component 31.

[0039] In this embodiment, the inner shaft transmission assembly 3 inside the outer casing 1 is used to drive the brush head 2 to vibrate. Specifically, the first transmission member 31, the second transmission member 32, and the oscillating member 33 form a triangular linkage drive device. Specifically, the first transmission member 31 receives power from the drive shaft of the toothbrush handle 5. One end of the second transmission member 32 (connecting hole 321) and one end of the oscillating member 33 (second rotating hole 332) are fixed to the end of the first transmission member 31. The first rotating hole 331 of the oscillating member 33 is connected to the first protrusion 10 of the brush head 2. The second transmission member 32, through the drive shaft, drives the oscillating member 33 to oscillate around the first protrusion 10 in a fan-shaped motion under the action of the first transmission member 31 and the spring 37, and smoothly drives the second transmission member 32 to perform an arc-shaped reciprocating motion. The second transmission member 32 then drives the brush head 2 to rotate in an arc-shaped reciprocating motion around the central axis of the brush head 2, thereby driving the bristles 21 to clean teeth. The spring 37 is sleeved around the first transmission member 31, and its function is to reduce vibration and noise and provide a reverse thrust when the inner shaft transmission assembly 3 moves inside the outer casing 1. The above structure can flexibly adjust the movement trajectory of the transmission components, so that the driving force of the drive shaft can be smoothly transmitted to the brush head 2, making the swing angle and frequency of the brush head 2 more stable and improving the user experience.

[0040] Furthermore, the end of the first transmission member 31 is configured as a semi-open "U"-shaped cavity, the connecting hole 321 of the second transmission member 32 is inserted into the semi-open "U"-shaped cavity, and the second rotating hole 332 of the swing member 33 is disposed outside the semi-open "U"-shaped cavity. All three are fixed together by a fixing pin 34. The second rotating hole 332 of the swing member 33 and the connecting hole 321 at the tail end of the second transmission member 32 are both fixedly connected to the first transmission member 31 through the semi-open "U"-shaped cavity by a fixing pin 34. In this embodiment, the second transmission member 32 is engaged within the semi-open "U"-shaped cavity. The swing member 33 is disposed outside the semi-open "U"-shaped cavity; in other embodiments, both can be disposed within the semi-open "U"-shaped cavity.

[0041] Based on the above embodiments, one end of the second transmission member 32 is provided with a second protrusion 322, and the other end is provided with a connecting hole 321. The brush head 2 includes bristles 21 and a transmission seat 22. The transmission seat 22 is provided with a main shaft hole 221 and an eccentric hole 222. The main shaft hole 221 is located at the rotation center of the transmission seat 22. A rotating shaft 11 connected to the main shaft hole 221 is installed inside the outer casing 1, and the second protrusion 322 of the second transmission member 32 is inserted into the eccentric hole 222.

[0042] The second transmission component 32 is connected to the eccentric hole 222 on the transmission seat 22 of the brush head 2 via the second protrusion 322 at its end. Under the drive of the swing component 33, the second transmission component 32 drives the brush head 2 to reciprocate around the main axis of the brush head 2 in an arc shape, thereby driving the bristles 21 to clean teeth.

[0043] A unique feature of this embodiment is that a shock-absorbing buffer pad 8 is provided at the connection between the second protrusion 322 and the eccentric hole 222. The transmission seat 22 has a slot 223 into which the head pin is inserted. This serves to limit and prevent slippage of the brush head 2. Since the second transmission component 32 needs to rotate continuously under the drive of the swing component 33, a silicone shock-absorbing buffer pad 8 is placed on its lower end surface to reduce vibration and noise.

[0044] Based on the above embodiments, the tail end of the outer shell 1 is provided with an elastic wall protrusion 12, an elastic semi-open circular retaining bone 13, and a handle mounting cavity 15; the tail cover 4 is provided with a reverse buckle 41, a limiting bone 42, and a guide bone 43. The reverse buckle 4 inside the tail cover 4 is interlocked with the elastic wall protrusion 12 at the tail end of the outer shell 1. The reverse buckle 41 and the elastic wall protrusion 12 are provided to realize the installation and fixation of the outer shell 1 and the tail cover 4. The limiting bone 42 and the guide bone 43, together with the elastic semi-open circular retaining bone 13, play a limiting and guiding role in the assembly process of the two, making the installation faster and more aligned.

[0045] Furthermore, in this embodiment, as Figure 5As shown, the tail end of the first transmission component 31 is provided with a screw suction component 35 and an O-ring 36. The screw suction component 35 is located at the end of the first transmission component 31, and the O-ring 36 is sleeved on the outside of the tail end of the first transmission component 31. The screw suction component 35 is used to attract the drive shaft inside the toothbrush handle 5. The O-ring 36 is detachably installed on the first transmission component 31, which plays a guiding and shock-absorbing role. The first transmission component 31 is fitted with a spring 37 and is provided with a screw suction component 35. The screw suction component 35 attracts the magnetic drive shaft inside the toothbrush handle 5 through its metallic properties, so as to transmit power for linear reciprocating motion.

[0046] In other embodiments, such as Figure 6 As shown, the tail end of the first transmission component 31 is also provided with a suction cup 38, which is used to adsorb the drive shaft inside the toothbrush handle 5. Figure 6 The diagram shows two different structures of suction cup 38, but the structure of suction cup 38 is not limited here. As long as it can achieve the adsorption function, it is acceptable. The suction cup 38 is designed to be firmly attracted to the drive shaft inside the handle of the brush head 2 to perform linear reciprocating motion. Under the action of the spring 37, it works by adsorption and plays a role in shock absorption and noise reduction during its linear motion.

[0047] Furthermore, the first transmission component 31 is provided with an annular locking structure, and the suction cup 38 is engaged with the annular locking structure. The tail end of the first transmission component 31 is provided with a soft rubber suction cup 38, which is fixed by the annular locking structure on the first transmission component 31. The suction cup 38 is abutted and attracted to the drive shaft on the toothbrush handle 5.

[0048] like Figure 15-16 As shown, this embodiment provides an electric toothbrush, including any of the electric toothbrush heads described above, and also includes a toothbrush handle 5. The tail end of the electric toothbrush head is inserted into the toothbrush handle 5. The tail end of the first transmission member is provided with a plurality of positioning bones 311, and the positioning bones 311 abut against the drive shaft of the toothbrush handle 5.

[0049] The first transmission component 31 has three vertical positioning bones 311 at its tail end, which serve as a limiting function; when the electric toothbrush head and toothbrush handle 5 are combined, the positioning bones 311 abut against the drive shaft to achieve positioning.

[0050] The above provides a detailed description of an electric toothbrush head and an electric toothbrush according to embodiments of the present invention. For those skilled in the art, based on the ideas of the embodiments of the present invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. An electric toothbrush head, comprising: The outer shell (1), the inner shaft drive assembly (3), the brush head (2) and the tail cap (4) are provided at one end of the outer shell (1) and at the other end of the outer shell (1). The inner shaft drive assembly (3) is provided inside the outer shell (1). The inner shaft transmission assembly (3) is characterized in that it includes a first transmission member (31), a second transmission member (32), and a swing member (33) connected to each other; One end of the second transmission member (32) is connected to the brush head (2), and the other end of the second transmission member (32) is provided with a connecting hole (321), which is fixedly connected to the first transmission member (31); The outer shell (1) is provided with a first protrusion (10) inside for accommodating the brush head (2); The swing member (33) has a first rotating hole (331) and a second rotating hole (332) at both ends respectively. The first rotating hole (331) is sleeved on the first protrusion (10). The second rotating hole (332) is fixedly connected to the connecting hole (321) of the second transmission member (32) and the first transmission member (31). The first transmission component (31) is fitted with a spring (37), one end of which abuts against several limiting guide bones inside the outer shell (1), and the other end abuts against the tail of the first transmission component (31).

2. The electric toothbrush head according to claim 1, characterized in that, The end of the first transmission member (31) is configured as a semi-open "U" shaped cavity, the connecting hole (321) of the second transmission member (32) is inserted into the semi-open "U" shaped cavity, and the second rotating hole (332) of the swing member (33) is set outside the semi-open "U" shaped cavity. The three are fixed by a fixing pin (34).

3. The electric toothbrush head according to claim 1, characterized in that, The second transmission component (32) has a second protrusion (322) at one end and a connecting hole (321) at the other end.

4. The electric toothbrush head according to claim 3, characterized in that, The brush head (2) includes bristles (21) and a transmission seat (22). The transmission seat (22) is provided with a spindle hole (221) and an eccentric hole (222). The spindle hole (221) is located at the rotation center of the transmission seat (22). The housing (1) is equipped with a rotating shaft (11) connected to the main shaft hole (221), and the second protrusion (322) of the second transmission member (32) is inserted into the eccentric hole (222).

5. The electric toothbrush head according to claim 4, characterized in that, A shock-absorbing buffer pad (8) is provided at the connection between the second protrusion (322) and the eccentric hole (222); The transmission seat (22) is provided with a slot (223), and the head pin is inserted into the slot (223).

6. The electric toothbrush head according to claim 1, characterized in that, The tail end of the outer shell (1) is provided with an elastic wall protrusion (12), an elastic semi-open circular locking bone (13) and a handle mounting cavity (15); the tail cover (4) is provided with a reverse buckle bone (41), a limiting bone (42) and a guide bone (43), and the buckle bone in the inner cavity of the tail cover (4) is interlocked with the elastic wall protrusion bone (12) at the tail end of the outer shell (1).

7. The electric toothbrush head according to claim 1, characterized in that, The tail end of the first transmission member (31) is provided with a screw suction member (35) and an O-ring (36). The screw suction member (35) is located at the end of the first transmission member (31), and the O-ring (36) is sleeved on the outside of the tail end of the first transmission member (31). The screw suction component (35) is used to suction the drive shaft inside the toothbrush handle (5).

8. The electric toothbrush head according to claim 1, characterized in that, The tail end of the first transmission component (31) is also provided with a suction cup (38), which is used to adsorb the drive shaft inside the toothbrush handle (5).

9. The electric toothbrush head according to claim 8, characterized in that, The first transmission component (31) is provided with an annular locking structure, and the suction cup (38) is engaged with the annular locking structure.

10. An electric toothbrush, characterized in that, The electric toothbrush head includes any one of claims 1-9, and also includes a toothbrush handle (5), wherein the tail end of the electric toothbrush head is inserted into the toothbrush handle (5); The tail end of the first transmission component (31) is provided with a plurality of positioning bones (311), which abut against the drive shaft of the toothbrush handle (5).

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