A multi-protection seal

Abstract

The utility model discloses a multi-protection seal in the technical field of seals, comprising an outer shell, a sealing body and a brush head, wherein the sealing body is embedded in the left side wall of the outer shell, the brush head is clamped on the left side of the sealing body, an extension tube is integrally formed at the middle of the right side wall of the inner cavity of the sealing body, a first sealing ring is integrally formed on the left and right sides of the inner cavity wall of the extension tube, a clamping ring is integrally formed on the right side of the outer wall of the extension tube, a locking groove is opened around the outer side of the left side wall of the inner cavity of the sealing body, and a second sealing ring is integrally formed around the outer side of the left side wall of the sealing body. The multi-protection seal has a reasonable structural design, two layers of first sealing rings can improve the sealing performance, and the second sealing ring and the third sealing ring arranged on different surfaces of the sealing body can perform double sealing on the bottom and the inside of the brush head when the brush head is installed, thereby improving the overall sealing effect, and the arrangement of the multi-layer seal can also increase the service life.

Description

Technical Field

[0001] The utility model relates to the technical field of seals, in particular to a multiple protection seal. Background Art

[0002] An electric toothbrush uses the rapid rotation or vibration of the electric motor to produce high-frequency vibrations in the brush head, instantly breaking down the toothpaste into fine foam and deeply cleaning the gaps between teeth. At the same time, the vibration of the bristles can promote blood circulation in the mouth and have a massage effect on the gum tissue. Electric toothbrushes are divided into two types: plug-in and battery-driven. Before using the electric toothbrush, the brush head needs to be installed on the power shaft of the electric toothbrush. In order to prevent water from entering the shell and damaging the electric toothbrush, the power shaft needs to be sealed with a sealing mechanism.

[0003] The Chinese patent with the announcement number "CN215651705U" discloses "a sealing structure of an electric toothbrush", including a brush body, a vibration motor located at the top of the brush body, and a sealing ring located at the output end of the vibration motor. The brush body includes a fixing frame arranged inside the brush body, and a battery is arranged at the bottom end of the fixing frame. The brush head is arranged at the top of the brush body. The utility model fixes the sealing ring to the power shaft by engaging the sealing groove and the sealing block with each other, limits the fixing cylinder by the limiting ring inside the groove, fixes the sealing ring to the power shaft, fixes the sealing head to the power shaft by the waterproof hole, and then passes through the sealing groove to fix the sealing ring to the power shaft. The sealing performance of the sealing ring and the power shaft is better through the fixing hole, the battery and the vibration motor are fixed inside the brush body through the fixing frame, the sealing head is inserted into the sealing hole, and the sealing ring on the top of the sealing ring is in close contact with the top of the brush body, so that the sealing performance of the electric toothbrush is better and the practicality of the sealing structure is improved. However, when the vibration motor is running, the power shaft in the patent will vibrate, and a gap will be generated between the sealing ring and the power shaft during operation, and there is only one layer of sealing ring between the brush head and the sealing ring. After long-term use, the sealing effect is reduced due to aging of the sealing ring. For this reason, we propose a multi-protection seal. Utility Model Content

[0004] The purpose of the utility model is to provide a multi-protection seal to solve the problem proposed in the above background technology that when the vibration motor is running, the power shaft will also vibrate, a gap will be generated between the sealing ring and the power shaft during operation, and there is only one layer of sealing ring between the brush head and the sealing ring, and the sealing effect is reduced after long-term use due to aging of the sealing ring.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a multiple protection seal, comprising an outer shell, a sealing body and a brush head, the sealing body being embedded in the left side wall of the outer shell, the brush head being clamped on the left side of the sealing body, an extension tube being integrally formed in the middle of the right side wall of the inner cavity of the sealing body, a first sealing ring being integrally formed on the left and right sides of the inner cavity wall of the extension tube, a retaining ring being integrally formed on the right side of the outer wall of the extension tube, a locking groove being opened around the outer side of the left side wall of the inner cavity of the sealing body, a second sealing ring being integrally formed around the outer side of the left side wall of the sealing body, and a third sealing ring being integrally formed around the left side of the outer wall of the sealing body.

[0006] As a further description of the above technical solution:

[0007] A vibration motor is fixedly connected to the left side wall of the inner cavity of the shell, and a power shaft is fixedly connected to the output end of the vibration motor. The left end of the power shaft passes through the extension tube and extends to the left side of the sealing body, and the first sealing ring is tightly fitted to the power shaft.

[0008] As a further description of the above technical solution:

[0009] A clamping groove is provided on the left side of the top of the power shaft, and a positioning groove is provided on the top of the power shaft and on the left side of the clamping groove.

[0010] As a further description of the above technical solution:

[0011] The left side wall of the shell is fixedly connected with a mounting seat, the inner side of the left side wall of the mounting seat is fixedly connected with a positioning ring, and the positioning ring is clamped between the inner cavity of the sealing body and the outer side wall of the extension tube.

[0012] As a further description of the above technical solution:

[0013] A locking ring is fixedly connected to the outer side of the left side wall of the mounting seat, and the locking ring is clamped in the inner cavity of the locking groove.

[0014] As a further description of the above technical solution:

[0015] A positioning block is fixedly connected to the left side of the inner cavity top of the brush head, and the positioning block is clamped in the inner cavity of the positioning groove. A clamping block is fixedly connected to the inner cavity top of the brush head and located on the right side of the positioning block, and the clamping block is clamped in the inner cavity of the clamping groove.

[0016] Compared with the prior art, the beneficial effects of the utility model are: the multiple protection seal, by arranging an integrally formed extension tube inside the sealing body, and arranging two first sealing rings inside the extension tube, the power shaft is inside the extension tube, and is sealed by the two first sealing rings, and when the power shaft generates vibration during operation, the two layers of first sealing rings can improve the sealing performance, and the second sealing ring and the third sealing ring arranged on different surfaces of the sealing body can perform double sealing on the bottom and the inside of the brush head when the brush head is installed, thereby improving the overall sealing effect, and the multi-layer sealing setting can also increase the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the main cross-sectional structure of a multi-protection seal proposed by the utility model;

[0018] Figure 2 This is a schematic diagram of a three-dimensional cross-sectional structure of a sealing body with multiple protection seals proposed by the utility model;

[0019] Figure 3 A multi-protection seal proposed by the utility model Figure 1 Enlarged structural diagram at A in the middle.

[0020] In the figure: 100, housing; 110, vibration motor; 111, power shaft; 112, slot; 113, positioning slot; 120, mounting seat; 121, positioning ring; 122, locking ring; 200, sealing body; 210, extension tube; 211, first sealing ring; 212, snap ring; 220, locking slot; 230, second sealing ring; 240, third sealing ring; 300, brush head; 310, positioning block; 320, slot. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] The utility model provides a multi-protection seal to improve the overall sealing effect. The multi-layer seal setting can also increase the service life. Please refer to Figure 1-3 , comprising a housing 100, a sealing body 200 and a brush head 300;

[0025] Please refer again Figure 1-3The left side wall of the inner cavity of the housing 100 is fixedly connected with a vibration motor 110, and the output end of the vibration motor 110 is fixedly connected with a power shaft 111. The left end of the power shaft 111 passes through the extension tube 210 and extends to the left side of the sealing body 200, and the first sealing ring 211 is tightly fitted with the power shaft 111. A card slot 112 is opened on the left side of the top of the power shaft 111, and a positioning groove 113 is opened on the top of the power shaft 111 and on the left side of the card slot 112. The left side wall of the housing 100 is fixedly connected with a mounting seat 120, and a positioning ring 121 is fixedly connected to the inner side of the left side wall of the mounting seat 120, and the positioning ring 121 is clamped in the sealing body 200. Between the inner cavity of the sealing body 200 and the outer side wall of the extension tube 210, a locking ring 122 is fixedly connected to the outer side of the left side wall of the mounting seat 120, and the locking ring 122 is clamped in the inner cavity of the locking groove 220. The vibration motor 110 drives the power shaft 111 to run, and the positioning groove 113 and the clamping groove 112 on the power shaft 111 cooperate with the positioning block 310 and the clamping block 320 on the brush head 300 to complete the installation of the brush head 300, and the positioning ring 121 on the mounting seat 120 is inserted into the interior of the sealing body 200, so that the locking ring 122 is clamped in the locking groove 220, and the clamping ring 212 is clamped in the inner cavity of the mounting seat 120;

[0026] Please refer again Figure 1-3 An extension tube 210 is integrally formed in the middle of the right side wall of the inner cavity of the sealing body 200, a first sealing ring 211 is integrally formed on the left and right sides of the inner cavity wall of the extension tube 210, a clamping ring 212 is integrally formed on the right side of the outer wall of the extension tube 210, a locking groove 220 is opened around the outer side of the left side wall of the inner cavity of the sealing body 200, a second sealing ring 230 is integrally formed around the outer side of the left side wall of the sealing body 200, and a third sealing ring 240 is integrally formed around the left side of the outer wall of the sealing body 200. The sealing body 200 is embedded in the left side wall of the shell 100. An integrally formed extension tube 210 is arranged inside the sealing body 200, and two first sealing rings 211 are arranged inside the extension tube 210. The power shaft 111 is sealed inside the extension tube 210 by the two first sealing rings 211. When the power shaft 111 vibrates during operation, the two layers of first sealing rings 211 can improve the sealing performance. The second sealing ring 230 and the third sealing ring 240 arranged on different surfaces of the sealing body 200 can double-seal the bottom and the inside of the brush head 300 when the brush head 300 is installed.

[0027] In summary, the overall sealing effect can be improved, and the multi-layer sealing setting can also increase the service life.

[0028] Please refer again Figure 1-3A positioning block 310 is fixedly connected to the left side of the top of the inner cavity of the brush head 300, and the positioning block 310 is clamped in the inner cavity of the positioning groove 113. A clamping block 320 is fixedly connected to the top of the inner cavity of the brush head 300 and on the right side of the positioning block 310, and the clamping block 320 is clamped in the inner cavity of the clamping groove 112. The brush head 300 is clamped to the left side of the sealing body 200. The positioning block 310 and the clamping block 320 on the brush head 300 can realize the quick installation and disassembly of the brush head 300.

[0029] In specific use, when using the electric toothbrush, the technical personnel in this field complete the installation of the brush head 300 through the positioning groove 113 and the clamping groove 112 opened on the power shaft 111 to cooperate with the positioning block 310 and the clamping block 320 on the brush head 300, and the positioning ring 121 on the mounting seat 120 is inserted into the interior of the slot seal body 200, so that the lock ring 122 is clamped into the lock groove 220, and the clamping ring 212 is clamped into the inner cavity of the mounting seat 120. After the brush head 300 is installed, the vibration motor 110 drives the brush head 300 to move when in use. When the power shaft 111 runs and generates vibration, an integrally formed extension tube 210 is arranged inside the sealing body 200, and two first sealing rings 211 are arranged inside the extension tube 210. The power shaft 111 is sealed inside the extension tube 210 by the two first sealing rings 211, and the second sealing ring 230 and the third sealing ring 240 arranged on different surfaces of the sealing body 200 can perform double sealing on the bottom and the inside of the brush head 300 when the brush head 300 is installed.

[0030] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0031] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A multi-protection seal, characterized in that: The brush head (300) comprises a shell (100), a sealing body (200) and a brush head (300), wherein the sealing body (200) is embedded in the left side wall of the shell (100), the brush head (300) is snap-connected to the left side of the sealing body (200), an extension tube (210) is integrally formed in the middle of the right side wall of the inner cavity of the sealing body (200), a first sealing ring (211) is integrally formed on the left and right sides of the inner cavity wall of the extension tube (210), a retaining ring (212) is integrally formed on the right side of the outer wall of the extension tube (210), a locking groove (220) is opened around the outer side of the left side wall of the inner cavity of the sealing body (200), a second sealing ring (230) is integrally formed around the outer side of the left side wall of the sealing body (200), and a third sealing ring (240) is integrally formed around the left side of the outer wall of the sealing body (200).

2. A multi-protection seal according to claim 1, characterized in that: A vibration motor (110) is fixedly connected to the left side wall of the inner cavity of the housing (100), and a power shaft (111) is fixedly connected to the output end of the vibration motor (110). The left end of the power shaft (111) passes through the extension tube (210) and extends to the left side of the sealing body (200), and the first sealing ring (211) is tightly fitted to the power shaft (111).

3. A multi-protection seal according to claim 2, characterized in that: A slot (112) is provided on the left side of the top of the power shaft (111), and a positioning slot (113) is provided on the top of the power shaft (111) and on the left side of the slot (112).

4. A multi-protection seal according to claim 3, characterized in that: A mounting seat (120) is fixedly connected to the left side wall of the housing (100), a positioning ring (121) is fixedly connected around the inner side of the left side wall of the mounting seat (120), and the positioning ring (121) is clamped between the inner cavity of the sealing body (200) and the outer side wall of the extension tube (210).

5. A multi-protection seal according to claim 4, characterized in that: A locking ring (122) is fixedly connected to the outer side of the left side wall of the mounting seat (120), and the locking ring (122) is clamped in the inner cavity of the locking groove (220).

6. A multi-protection seal according to claim 5, characterized in that: A positioning block (310) is fixedly connected to the left side of the top of the inner cavity of the brush head (300), and the positioning block (310) is snap-fitted into the inner cavity of the positioning groove (113); a clamping block (320) is fixedly connected to the top of the inner cavity of the brush head (300) and located on the right side of the positioning block (310), and the clamping block (320) is snap-fitted into the inner cavity of the clamping groove (112).

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