Waterproof structure of electric toothbrush and electric toothbrush
By using the interlocking structure of the elastic steel wire and the retaining ring, along with the design of the sealing ring, the sealing problem at the connection between the electric toothbrush handle and the brush head is solved, preventing water from seeping in, extending service life, and improving user comfort.
Patent Information
- Application Number
- CN202422957391.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-02
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2034-12-02
AI Technical Summary
Existing electric toothbrushes are prone to poor sealing at the connection between the handle and the brush head, allowing moisture to seep into the handle, damaging internal electronic components, affecting the performance and stability of the electric toothbrush, and shortening its lifespan.
The design employs a snap-fit structure with an elastic steel wire and a retaining ring, combined with a sealing ring that recovers its deformation on the outside of the annular groove, to achieve a seal between the brush head and the handle, preventing water from seeping in. At the same time, the movable ring and spring strip structure absorb vibration and impact, improving user comfort.
It effectively prevents water from entering the handle, extends the life of the electric toothbrush, improves user comfort, and avoids vibration being directly transmitted to the hand.
Smart Images
Figure CN223601555U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of electric toothbrush, concretely relates to a waterproof structure of electric toothbrush and electric toothbrush. BACKGROUND
[0002] Electric toothbrush makes the brush head produce high frequency vibration through the rapid rotation or vibration of the motor core. This vibration can not only decompose toothpaste into fine foam and clean the tooth gap deeply, but also the vibration of the bristle can promote the blood circulation of the oral cavity and massage the gum tissue. The vibration type electric toothbrush has an electrically driven vibration motor inside, which can make the brush head produce high frequency swing perpendicular to the direction of the handle. The swing amplitude is small, generally about 5mm up and down. The high frequency swing of the brush head can efficiently complete the action of brushing teeth, and the vibration also makes the mixture of toothpaste and water in the oral cavity produce a large number of tiny bubbles. The pressure generated by the bubble burst can clean the dirt in the tooth gap.
[0003] The existing electric toothbrush has the following problems in the process of use:
[0004] The position of the handle and the brush head of the electric toothbrush is often prone to the problem of poor sealing due to some deficiencies in design, material or manufacturing process, which leads to water penetration. The internal structure of the handle is complex and densely covered with electronic components, including circuit board, battery, motor drive module and other key components. These components are extremely sensitive to moisture. Once the water penetrates into the handle through the connection with poor sealing, it may not only directly cause short circuit between the electronic components, causing circuit failure, but also may cause metal parts to rust and corrode due to long-term humid environment, which seriously affects the performance and stability of the electric toothbrush. In the long run, this water penetration problem will greatly shorten the service life of the electric toothbrush, and even may cause it to be scrapped in advance, which brings unnecessary economic loss and inconvenience to the user. TECHNICAL PROBLEM
[0005] (1) Technical problem to be solved
[0006] In view of the deficiencies of the prior art, the utility model discloses a waterproof structure of electric toothbrush, which aims to solve the problem of the connection between the handle and the brush head of the electric toothbrush in the prior art, which is prone to sealing problems due to design, material or manufacturing process, and thus water penetrates into the handle. The internal structure of the handle is complex and densely packed with electronic components, including circuit boards, batteries, motor drive modules and other key components, which are extremely sensitive to moisture. Once the moisture penetrates into the handle through the poorly sealed connection, it may not only directly cause short circuit between the electronic components, causing circuit failure, but also may cause metal parts to rust and corrode due to long-term damp environment, seriously affecting the performance and stability of the electric toothbrush. Over time, this water penetration problem will greatly shorten the service life of the electric toothbrush, and may even cause it to be scrapped prematurely, causing unnecessary economic losses and inconvenience to users.
[0007] (2) Technical scheme
[0008] In order to solve the above technical problems, the utility model provides a waterproof structure of electric toothbrush and electric toothbrush, which comprises a toothbrush handle, a brush head docking cylinder, a power output rod and a toothbrush head, the end of the toothbrush handle is connected with the brush head docking cylinder, the inside of the brush head docking cylinder is connected with the power output rod, the end of the brush head docking cylinder is sleeved with the toothbrush head, the surface of the brush head docking cylinder is provided with an annular clamping groove, the surface of the brush head docking cylinder is connected with a clamping ring, the inner wall of the toothbrush head is connected with a sealing ring, and the inner wall of the toothbrush head is embeddedly connected with an elastic steel wire.
[0009] When the electric toothbrush of the technical scheme is used, the position of the toothbrush head can be fixed through the clamping of the elastic steel wire and the clamping ring, and at the same time the sealing ring restores deformation outside the annular clamping groove, so that the sealing ring can seal between the brush head docking cylinder and the toothbrush head, thereby avoiding water penetration into the toothbrush handle.
[0010] Preferably, the sealing ring is made of rubber material, a clamping sealing structure is formed between the sealing ring and the annular clamping groove, and the sealing ring seals between the brush head docking cylinder and the toothbrush head, thereby achieving waterproof between the toothbrush head and the toothbrush handle.
[0011] Further, the clamping ring is provided with two layers, the gap width between the two layers of clamping rings is the same as the diameter of the elastic steel wire, the elastic steel wire is made of galvanized carbon material, and when the toothbrush head drives the elastic steel wire to move between the two layers of clamping rings, the elastic steel wire restores deformation through its own elastic force at this time, thereby fixing the position of the toothbrush head.
[0012] The utility model provides an electric toothbrush, which comprises a toothbrush handle, a brush head adapter sleeve, a power output rod and a toothbrush head, the end of the toothbrush handle is connected with the brush head adapter sleeve, the inside of the brush head adapter sleeve is connected through with the power output rod, the end of the brush head adapter sleeve is sleeved with the toothbrush head, the surface of the toothbrush handle is sleeved with a holding outer sleeve, the inner wall of the holding outer sleeve is connected with a first limiting ring, the inner wall of the holding outer sleeve is connected with a second limiting ring, the surface of the toothbrush handle is connected with a movable ring, a spring strip is connected between the first limiting ring and the movable ring, and the spring strip is sleeved on the surface of the toothbrush handle.
[0013] Furthermore, the first limiting ring, the second limiting ring, the spring strip and the movable ring are symmetrically arranged at two ends of the holding outer sleeve, and the movement position of the movable ring can be limited through the second limiting ring.
[0014] Furthermore, an elastic structure is formed between the movable ring and the spring strip, and when the electric toothbrush vibrates, the spring strip is deformed by being pulled by the movable ring, and the spring strip can absorb and disperse the impact force generated by the vibration of the electric toothbrush through elastic deformation.
[0015] (3) Advantageous effects
[0016] Compared with the prior art, the utility model has the advantages that:
[0017] The utility model discloses a fixing structure of a toothbrush head of an electric toothbrush, which comprises a toothbrush handle, a brush head adapter sleeve, a power output rod and a toothbrush head, the end of the toothbrush handle is connected with the brush head adapter sleeve, the inside of the brush head adapter sleeve is connected through with the power output rod, the end of the brush head adapter sleeve is sleeved with the toothbrush head, the surface of the toothbrush handle is sleeved with a holding outer sleeve, the inner wall of the holding outer sleeve is connected with a first limiting ring, the inner wall of the holding outer sleeve is connected with a second limiting ring, the surface of the toothbrush handle is connected with a movable ring, a spring strip is connected between the first limiting ring and the movable ring, and the spring strip is sleeved on the surface of the toothbrush handle.
[0018] The user can hold the holding outer sleeve, so that the movable ring can be moved when the electric toothbrush vibrates, the spring strip can be deformed by being pulled, and the spring strip can absorb and disperse the impact force generated by the vibration of the electric toothbrush through elastic deformation, so that the vibration can not be directly transmitted to the hands of the user, and the comfort of using the electric toothbrush can be improved. ACCURACY OF DRAWINGS
[0019] Figure 1 It is a schematic view of the main structure of one specific embodiment of the utility model device;
[0020] Figure 2 It is a schematic view of the end structure of the toothbrush handle of one specific embodiment of the utility model device;
[0021] Figure 3 It is an enlarged view of the end part of the toothbrush handle of one specific embodiment of the utility model device;
[0022] Figure 4 is a schematic view of a toothbrush head structure of a specific embodiment of the utility model device;
[0023] Figure 5 is a sectional view of a waterproof structure of a specific embodiment of the utility model device;
[0024] Figure 6 is a sectional view of an internal structure of a holding outer cylinder of a specific embodiment of the utility model device;
[0025] Figure 7 is a schematic view of a specific embodiment of the utility model device Figure 5 structure at A.
[0026] The signs in the drawings are: 1, toothbrush handle; 2, brush head butt joint cylinder; 3, power output rod; 4, toothbrush head; 5, annular clamping groove; 6, clamping ring; 7, sealing ring; 8, elastic steel wire; 9, holding outer cylinder; 10, first limiting ring; 11, second limiting ring; 12, spring strip; 13, movable ring. Specific embodiment
[0027] Example one:
[0028] This specific embodiment is a waterproof structure of an electric toothbrush, and a structure schematic view thereof is shown in Figs. Figures 1-5 and 7, the waterproof structure includes a toothbrush handle 1, a brush head butt joint cylinder 2, a power output rod 3 and a toothbrush head 4, the end of the toothbrush handle 1 is connected with the brush head butt joint cylinder 2, the inside of the brush head butt joint cylinder 2 is connected through with the power output rod 3, the end of the brush head butt joint cylinder 2 is sleeved with the toothbrush head 4, the surface of the brush head butt joint cylinder 2 is provided with an annular clamping groove 5, the surface of the brush head butt joint cylinder 2 is connected with a clamping ring 6, the inner wall of the toothbrush head 4 is connected with a sealing ring 7, and the inner wall of the toothbrush head 4 is embeddedly connected with an elastic steel wire 8.
[0029] Among them, the sealing ring 7 adopts rubber material, the sealing ring 7 and the annular clamping groove 5 form a clamping sealing structure, the clamping ring 6 is provided with two layers, the gap width between the two layers of clamping ring 6 is same with the diameter of the elastic steel wire 8, and the elastic steel wire 8 adopts galvanized carbon material.
[0030] Working principle: when the device of the technical solution is used, when installing the toothbrush head 4, first, the toothbrush head 4 is inserted into the surface of the power output rod 3, when the toothbrush head 4 drives the sealing ring 7 to move to the surface of the brush head butt joint cylinder 2, at this time, the toothbrush head 4 continues to move downward, which causes the sealing ring 7 to be extruded by the brush head butt joint cylinder 2 and deformed, when the toothbrush head 4 drives the elastic steel wire 8 to move to the surface of the clamping ring 6, at this time, the elastic steel wire 8 is extruded by the clamping ring 6 and deformed, when the toothbrush head 4 drives the elastic steel wire 8 to move between the two clamping rings 6, at this time, the elastic steel wire 8 restores the deformation by the elastic force of itself, so that the position of the toothbrush head 4 can be fixed, at the same time, the sealing ring 7 restores the deformation outside the annular clamping groove 5, so that the sealing ring 7 can seal between the brush head butt joint cylinder 2 and the toothbrush head 4, thereby avoiding water from seeping into the toothbrush handle 1.
[0031] Embodiment two:
[0032] The specific embodiment is an electric toothbrush, a structural schematic view of which is shown in Figure 1 and 6 The electric toothbrush comprises a toothbrush handle 1, a brush head butt joint cylinder 2, a power output rod 3 and a toothbrush head 4, the end of the toothbrush handle 1 is connected with the brush head butt joint cylinder 2, the inside of the brush head butt joint cylinder 2 is connected through with the power output rod 3, the end of the brush head butt joint cylinder 2 is sleeved with the toothbrush head 4, the surface of the toothbrush handle 1 is sleeved with a holding outer cylinder 9, the inner wall of the holding outer cylinder 9 is connected with a first limiting ring 10, the inner wall of the holding outer cylinder 9 is connected with a second limiting ring 11, the surface of the toothbrush handle 1 is connected with a movable ring 13, the first limiting ring 10 and the movable ring 13 are connected with a spring strip 12, and the spring strip 12 is sleeved on the surface of the toothbrush handle 1.
[0033] Among them, the first limiting ring 10, the second limiting ring 11, the spring strip 12 and the movable ring 13 are symmetrically arranged at both ends of the holding outer cylinder 9, and the movable ring 13 and the spring strip 12 form an elastic structure.
[0034] Working principle: when the device of the technical solution is used, the user can hold the holding outer cylinder 9, so that when the electric toothbrush is used and vibrates, the movable ring 13 can be moved, the spring strip 12 can be deformed when the movable ring 13 moves, and the spring strip 12 can absorb and disperse the impact force generated by the vibration of the electric toothbrush through the elastic deformation of itself.
[0035] All the technical features in the embodiment can be freely combined according to actual needs.
[0036] The above embodiment is a preferred implementation scheme of the utility model, in addition to this, the utility model can be realized in other ways, and any obvious replacement without departing from the technical solution concept is within the protection scope of the utility model.
Claims
1. A waterproof structure of an electric toothbrush, the waterproof structure comprising a toothbrush handle (1), a brush head docking cylinder (2), a power output rod (3) and a toothbrush brush head (4), characterized in that, The end of the toothbrush handle (1) is connected with a brush head butt joint cylinder (2), the inside of the brush head butt joint cylinder (2) is connected with a power output rod (3) in penetration, the end of the brush head butt joint cylinder (2) is sleeved with a toothbrush brush head (4), the surface of the brush head butt joint cylinder (2) is provided with an annular clamping groove (5), the surface of the brush head butt joint cylinder (2) is connected with a clamping ring (6), the inner wall of the toothbrush brush head (4) is connected with a sealing ring (7), and the inner wall of the toothbrush brush head (4) is embeddedly connected with an elastic steel wire (8).
2. The waterproof structure of an electric toothbrush according to claim 1, wherein The sealing ring (7) is made of rubber material, and the sealing ring (7) and the annular clamping groove (5) form a clamping sealing structure.
3. The waterproof structure of an electric toothbrush according to claim 2, wherein The clamping ring (6) is provided with two layers, and the gap width between the two layers of the clamping ring (6) is the same as the diameter of the elastic steel wire (8).
4. The waterproof structure of an electric toothbrush according to claim 3, wherein The elastic steel wire (8) is made of galvanized carbon material.
5. An electric toothbrush comprising a toothbrush handle (1), a brush head docking tube (2), a power output rod (3) and a toothbrush head (4), characterized in that, The end of the toothbrush handle (1) is connected with a brush head butt joint cylinder (2), the inside of the brush head butt joint cylinder (2) is connected with a power output rod (3) in penetration, the end of the brush head butt joint cylinder (2) is sleeved with a toothbrush brush head (4), the surface of the brush head butt joint cylinder (2) is provided with an annular clamping groove (5), the surface of the brush head butt joint cylinder (2) is connected with a clamping ring (6), the inner wall of the toothbrush brush head (4) is connected with a sealing ring (7), and the inner wall of the toothbrush brush head (4) is embeddedly connected with an elastic steel wire (8).
6. The electric toothbrush according to claim 5, wherein The first limiting ring (10), the second limiting ring (11), the spring strip (12) and the movable ring (13) are symmetrically arranged at both ends of the holding outer cylinder (9).
7. The electrically powered toothbrush of claim 6 wherein, The movable ring (13) and the spring strip (12) form an elastic structure.