Air pressure balance connection structure and electric toothbrush

Abstract

The present invention discloses an air pressure balance connection structure and an electric toothbrush. The air pressure balance connection structure is used for an electric toothbrush, and comprises: an electric toothbrush body, the electric toothbrush body comprises a driving assembly and a battery assembly, the battery assembly is electrically connected to the driving assembly; and an air pressure balance connection mechanism, the air pressure balance connection mechanism is arranged on the electric toothbrush body and is used to connect the driving assembly and the battery assembly. By detachably connecting the driving assembly and the battery assembly, the replacement and maintenance of the battery assembly is guaranteed, and by providing the air pressure balance connection mechanism for connecting the driving assembly and the battery assembly, the replacement and maintenance of the battery assembly of the electric toothbrush is further facilitated, thereby improving the service life of the electric toothbrush.

Description

Technical Field

[0001] The present invention relates to the technical field of electric toothbrushes, and in particular to an air pressure balance connection structure and an electric toothbrush. Background Art

[0002] Electric toothbrushes are widely popular in the market because of their good cleaning effect. When the electric toothbrush is working, the motor drives the brush head to produce high-frequency vibration, 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 oral cavity and have a massage effect on the gum tissue.

[0003] However, existing electric toothbrushes are usually provided with batteries to provide power for the motor, but the batteries and motors in existing electric toothbrushes are usually provided as an integrated structure, which results in that the battery of the electric toothbrush cannot be replaced after it is worn out, thus seriously affecting the service life of the electric toothbrush.

[0004] Therefore, the prior art has defects and needs to be improved and developed. Summary of the invention

[0005] In view of the above-mentioned deficiencies in the prior art, an object of the present invention is to provide an air pressure balance connection structure and an electric toothbrush, aiming to solve the problem that the battery and motor of the electric toothbrush in the prior art are integrated and the battery cannot be replaced.

[0006] A technical solution adopted by the present invention to solve the technical problem is as follows: an air pressure balance connection structure for an electric toothbrush, comprising:

[0007] An electric toothbrush body, the electric toothbrush body comprising a drive assembly and a battery assembly, the battery assembly being electrically connected to the drive assembly;

[0008] An air pressure balancing connection mechanism is provided on the electric toothbrush body and is used to connect the driving assembly and the battery assembly.

[0009] Furthermore, the air pressure balance connection structure also includes a detachably connected drive fixing assembly and a battery fixing assembly;

[0010] The driving and fixing assembly is provided with a joint bracket, and the driving assembly is arranged on the driving and fixing assembly;

[0011] The battery fixing assembly is provided with a bottom shell and a battery front cover, and the battery assembly is arranged on the bottom shell and the battery front cover;

[0012] Among them, the battery assembly is detachably connected to the drive assembly, the connector bracket is detachably connected to the battery front cover, one end of the air pressure balance connection mechanism is detachably connected to the bottom shell, the battery assembly and the battery front cover, and the other end of the air pressure balance connection mechanism is detachably connected to the connector bracket.

[0013] Furthermore, the air pressure balancing connection mechanism includes:

[0014] A button, wherein the button is slidably connected with the battery fixing assembly, the battery assembly and the connector bracket in sequence from outside to inside along the radial direction of the electric toothbrush body;

[0015] A button reset piece is sleeved on the button between the bottom shell and the battery assembly and is used to push the button to automatically lock the drive assembly.

[0016] Furthermore, the button includes:

[0017] Button body;

[0018] A shell limiting portion, the shell limiting portion is arranged at one end of the button body in the length direction, and is used to limit the button body in the bottom shell;

[0019] A drive locking portion is provided on an end of the button body in the length direction away from the housing limiting portion, and is used to lock and fix the joint bracket.

[0020] Furthermore, the housing limiting portion includes a limiting step, and a pressing portion disposed at an end of the limiting step away from the button body;

[0021] The bottom shell is provided with a button slot at the end facing the driving fixing assembly, the battery front cover is provided with a reset slot at a position corresponding to the button slot, and a button hole is provided at the axis of the reset slot, and a fixed step is provided at the junction of the button hole and the reset slot;

[0022] The hole diameter of the button groove is smaller than the outer diameter of the limiting step, and the limiting step is matched with the inner surface of the bottom shell, the button body is slidably connected to the button hole, and the pressing part is slidably connected to the button groove;

[0023] The button reset member is configured as a reset spring, one end of the button reset member is fixed to the end surface of the limiting step away from the pressing portion, the other end of the button reset member is fixed between the reset groove and the fixed step, the button body is slidably connected to the button hole, and the pressing portion is slidably connected to the button groove.

[0024] Furthermore, a first air channel is provided at the axis of the button body, and a second air channel extending along the circumference of the electric toothbrush body and vertically connected to the first air channel is provided on the housing limiting portion; the air pressure balance connection mechanism further comprises: an air cushion accommodated in the second air channel and used to seal the second air channel; wherein the air cushion is provided with air outlets connected to the second air channel at both ends along the circumference of the electric toothbrush body;

[0025] The outer circumference of the button body is provided with a sealing groove, and the button further comprises a sealing ring, which is sleeved in the sealing groove.

[0026] Further, the driving locking portion includes an integrally formed disengaging end and a locking end, and the locking end is arranged at an end of the disengaging end away from the housing limiting portion, and the outer diameter of the disengaging end is smaller than the outer diameter of the locking end;

[0027] The joint bracket is correspondingly provided with a locking opening extending along the axial direction of the joint bracket, and the locking opening includes a locking portion and an opening portion arranged on a side of the locking portion close to the battery assembly;

[0028] Among them, the outer diameter of the locking end is smaller than the inner diameter of the locking part, the outer diameter of the disengagement end is smaller than the inner diameters of the locking part and the opening part, and the size of the junction between the opening part and the locking part is smaller than the maximum outer diameter of the locking part.

[0029] Furthermore, the locking portion includes:

[0030] an accommodating end, the accommodating end being adapted to the locking end;

[0031] A fixed step end, the fixed step end is arranged on a side of the accommodating end close to the housing limiting portion;

[0032] Among them, the inner diameter of the fixed step end is smaller than the outer diameter of the locking end, and the outer diameter of the disengagement end is smaller than the inner diameter of the fixed step end; the size of the junction between the opening portion and the locking portion is smaller than the maximum outer diameter of the locking portion, and the maximum outer diameter of the disengagement portion is smaller than the size of the junction between the opening portion and the locking portion.

[0033] Furthermore, the accommodation end cooperates with the conical surface of the locking end, and the inner diameter of the accommodation end decreases gradually in the direction toward the fixed step end;

[0034] The opening portion is configured to be in a bell-mouth shape, and an inner diameter of the opening portion decreases gradually in a direction toward the locking portion.

[0035] A technical solution adopted by the present invention to solve the technical problem is as follows: an electric toothbrush, comprising: the air pressure balancing connection structure as described above.

[0036] Compared with the prior art, the present invention provides an air pressure balance connection structure and an electric toothbrush. The air pressure balance connection structure is used for an electric toothbrush, and includes: an electric toothbrush body, the electric toothbrush body includes a drive assembly and a battery assembly, and the battery assembly is electrically connected to the drive assembly; an air pressure balance connection mechanism, the air pressure balance connection mechanism is arranged on the electric toothbrush body and is used to connect the drive assembly and the battery assembly. It can be understood that by detachably connecting the drive assembly and the battery assembly, it provides a guarantee for the replacement and maintenance of the battery assembly, and by providing an air pressure balance connection mechanism for connecting the drive assembly and the battery assembly, it further facilitates the replacement and maintenance of the battery assembly of the electric toothbrush, thereby improving the service life of the electric toothbrush. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a three-dimensional exploded schematic diagram of an electric toothbrush provided with an air pressure balance connection structure provided in the present invention;

[0038] Figure 2 It is a three-dimensional exploded schematic diagram of the air pressure balance connection structure provided in the present invention;

[0039] Figure 3 is a three-dimensional exploded schematic diagram of the air pressure balance connection structure provided in the present invention from another perspective;

[0040] Figure 4 is a side view schematic diagram of an electric toothbrush provided with an air pressure balancing connection structure provided in the present invention;

[0041] Figure 5 The present invention Figure 4 A schematic cross-sectional view along the III-III direction;

[0042] Figure 6 The present invention Figure 5 An enlarged schematic diagram of the D portion in FIG.

[0043] Figure 7 It is a three-dimensional exploded schematic diagram of the air pressure balance connection mechanism of the air pressure balance connection structure provided in the present invention;

[0044] Figure 8 It is a three-dimensional exploded schematic diagram of the matching relationship between the air pressure balance connection mechanism, the joint bracket and the battery front cover of the air pressure balance connection structure provided in the present invention;

[0045] Fig. 9 It is a side view schematic diagram of the matching relationship between the air pressure balance connection mechanism, the joint bracket and the battery front cover of the air pressure balance connection structure provided in the present invention;

[0046] Fig.10 The present invention Fig. 9Schematic diagram of the cross section along the IV-IV direction;

[0047] Fig.11 The present invention Fig. 9 A schematic cross-sectional view along the V-V direction;

[0048] Fig.12 The present invention Fig.11 A schematic diagram of a deformation structure;

[0049] Fig.13 It is a schematic diagram of the three-dimensional structure of the battery front cover of the air pressure balance connection structure provided in the present invention;

[0050] Description of reference numerals:

[0051] 1. Electric toothbrush; 30. Air pressure balance connection structure; 31. Air pressure balance connection mechanism; 32. Button; 33. Button reset member; 34. Air cushion; 11. Drive fixing assembly; 12. Drive assembly; 13. Brush head assembly; 15. Electric toothbrush body; 17. Battery fixing assembly; 18. Power socket; 19. Toothbrush handle; 321. Button body; 322. Shell limiting part; 323. Drive locking part; 324. Sealing ring; 341. Air outlet; 151. Battery assembly; 171. Bottom shell; 172. Battery front cover; 3211. Limiting step; 3212. Pressing part; 3213. First air channel; 3214. Sealing groove; 3221. Second air channel; 3231. Disengagement end; 3232. Locking end; 1711. Button groove; 1721, reset groove; 1722, button hole; 1723, fixed step; 116, joint bracket; 1161, locking mouth; 1162, locking part; 1163, opening part; 1164, accommodating end; 1165, fixed step end. DETAILED DESCRIPTION

[0052] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0053] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" 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 invention 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 limiting the present invention. In addition, the terms "first" and "second" are used only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0054] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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.

[0055] Electric toothbrushes are widely welcomed in the market because of their good cleaning effect. When the electric toothbrush is working, the motor drives the brush head to generate high-frequency vibration, decomposes the toothpaste into fine foam, and deeply cleans the gaps between teeth. At the same time, the vibration of the bristles can promote blood circulation in the oral cavity and have a massage effect on the gum tissue. However, the existing electric toothbrush is usually provided with a battery to provide power for the motor, but the battery and the motor in the existing electric toothbrush are usually set as an integrated structure, which leads to the battery of the electric toothbrush being unable to be replaced after it is worn out, thereby seriously affecting the service life of the electric toothbrush. Based on the problem that the battery and the motor of the electric toothbrush are integrated in the prior art and the battery cannot be replaced, the present invention provides an air pressure balance connection structure and an electric toothbrush, the air pressure balance connection structure is used for the electric toothbrush, and comprises: an electric toothbrush body, the electric toothbrush body comprises a drive assembly and a battery assembly, the battery assembly is electrically connected to the drive assembly; an air pressure balance connection mechanism, the air pressure balance connection mechanism is arranged on the electric toothbrush body, and is used to connect the drive assembly and the battery assembly. It can be understood that by detachably connecting the drive assembly and the battery assembly, replacement and maintenance of the battery assembly is guaranteed, and by providing an air pressure balance connection mechanism for connecting the drive assembly and the battery assembly, replacement and maintenance of the battery assembly of the electric toothbrush is further facilitated, thereby improving the service life of the electric toothbrush; please refer to the following embodiments for details.

[0056] Please refer to further Figure 1 and Figure 3 In the first embodiment of the present invention, there is provided an air pressure balance connection structure 30 for an electric toothbrush 1; the air pressure balance connection structure 30 comprises: an electric toothbrush body 15 and an air pressure balance connection mechanism 31; the electric toothbrush body 15 comprises a driving component 12 and a battery component 151, the battery component 151 is electrically connected to the driving component 12, and is used to provide energy for the driving component 12, the air pressure balance connection mechanism 31 is arranged on the electric toothbrush body 15, and is used to connect the driving component 12 and the battery component 151.

[0057] It can be understood that by detachably connecting the drive assembly 12 and the battery assembly 151, the replacement and maintenance of the battery assembly 151 is guaranteed, and by providing a pressure balance connection mechanism 31 for connecting the drive assembly 12 and the battery assembly 151, the replacement and maintenance of the battery assembly 151 of the electric toothbrush 1 is further facilitated, thereby improving the service life of the electric toothbrush 1. It should be noted that the electric toothbrush body 15 also includes a brush head assembly 13, which is transmission-connected to the drive assembly 12 and is arranged on one end of the drive assembly 12 away from the battery assembly 151 along the axial direction of the electric toothbrush body 15.

[0058] In some other preferred embodiments, the air pressure balancing connection structure 30 also includes a drive fixing component 11 and a battery fixing component 17, and the drive fixing component 11 and the battery fixing component 17 are detachably connected; the drive component 12 is arranged on the drive fixing component 11, and the battery component 151 is arranged on the battery fixing component; it can be understood that the drive component 12 is fixed on the drive fixing component 11, and the battery component 151 is fixed on the battery fixing component, that is, by detachably connecting the drive fixing component 11 and the battery fixing component 17, a guarantee is provided for realizing a detachable connection between the battery component 151 and the drive component 12.

[0059] Further, the drive fixing assembly 11 is provided with a joint bracket 116, and the joint bracket 116 is provided at one end of the connection between the drive fixing assembly 11 and the battery fixing assembly 17, that is, the drive assembly 12 is provided at one end of the joint bracket 116, and the other end is provided toward the battery assembly 151. The battery fixing assembly 17 is provided with a bottom shell 171 and a battery front cover 172, and the battery assembly 151 is provided between the bottom shell 171 and the battery front cover 172, and the battery front cover 172 is provided at one end of the bottom shell 171 facing the drive fixing assembly 11;

[0060] It should be noted that the battery assembly 151 is detachably connected to the drive assembly 12, the connector bracket 116 is detachably connected to the battery front cover 172, one end of the air pressure balance connection mechanism 31 is detachably connected to the bottom shell 171, the battery assembly 151 and the battery front cover 172, and the other end of the air pressure balance connection mechanism 31 is detachably connected to the connector bracket 116.

[0061] Please refer to further Figure 4 Furthermore, the battery assembly 151 and the battery fixing assembly 17 are configured as a power socket 18, and the drive assembly 12, the drive fixing assembly 11 and the brush head assembly 13 constitute a toothbrush handle 19; the air pressure balance connection mechanism 31 is disposed on the power socket 18, and when the electric toothbrush 1 is used, the power socket 18 is connected to the toothbrush handle 19, and when the battery assembly 151 needs to be removed, the power socket 18 can be removed from the toothbrush handle 19; at the same time, the removed power socket 18 can also be used as a mobile power source.

[0062] It can be understood that the air pressure balance connection mechanism 31 is fixed to one side of the battery assembly 151 and the battery fixing assembly 17. When the electric toothbrush 1 is assembled, the battery assembly 151 and the driving assembly 12 are first detachably connected and then electrically connected. When the battery assembly 151 and the driving assembly 12 are connected, the battery fixing assembly 17 and the driving fixing assembly 11 are also in a mutually connected state, thereby providing a guarantee for the replacement and maintenance of the battery assembly 151.

[0063] Please refer to further Figure 5 to Figure 6 In some other preferred embodiments, the air pressure balance connection mechanism 31 includes: a button 32 and a button reset member 33; the button 32 is slidably connected with the battery fixing assembly 17, the battery assembly 151 and the connector bracket 116 in sequence from the outside to the inside along the radial direction of the electric toothbrush body 15; the button reset member 33 is sleeved on the button 32 between the bottom shell 171 and the battery assembly 151, and is used to push the button 32 to automatically lock the driving assembly 12.

[0064] It can be understood that the air pressure balance connection mechanism 31 provided in this embodiment controls whether the battery assembly 151 and the drive assembly 12 can be disassembled through the air pressure balance connection mechanism 31, and connects the battery fixing assembly 17 and the drive fixing assembly 11 through the button 32, thereby also realizing the connection between the battery assembly 151 and the drive assembly 12. At the same time, the button 32 can slide relative to the electric toothbrush body 15 and be reset under the action of the button reset member 33, thereby realizing the connection and disassembly between the battery assembly 151 and the drive assembly 12.

[0065] Please refer to further Figure 7 In some other preferred embodiments, the button 32 includes: a button body 321, a shell limiting portion 322 and a drive locking portion 323; the shell limiting portion 322 is arranged on one end of the button body 321 in the length direction, and is used to limit the button body 321 in the bottom shell 171; the drive locking portion 323 is arranged on one end of the button body 321 in the length direction away from the shell limiting portion 322, and is used to lock and fix the connector bracket 116.

[0066] It can be understood that the user disassembles or installs the battery assembly 151 and the drive assembly 12 by pressing the shell limit portion 322; the drive locking portion 323 is used to connect the battery assembly 151 and the drive assembly 12; that is, when installing the battery assembly 151, press the shell limit portion 322 of the button 32; after assembly, release the shell limit portion 322, and the drive locking portion 323 of the button 32, under the action of the button reset member 33, the drive locking portion 323 locks and fixes the battery assembly 151 and the drive assembly 12; when disassembling the battery assembly 151, press the shell limit portion 322 of the button 32 to remove the battery assembly 151 and the battery fixing assembly 17; thereby facilitating the disassembly and installation operations of the battery assembly 151 of the electric toothbrush 1.

[0067] In some other preferred embodiments, the housing limiting portion 322 includes a limiting step 3211 and a pressing portion 3212 disposed at one end of the limiting step 3211 away from the button body 321; a button groove 1711 is disposed at the end of the bottom shell 171 facing the driving fixing assembly 11; the aperture of the button groove 1711 is smaller than the outer diameter of the limiting step 3211, and the limiting step 3211 cooperates with the inner surface of the bottom shell 171, and the pressing portion 3212 is slidably connected with the button groove 1711; It can be understood that the limiting step 3211 of the shell limiting portion 322 is accommodated inside the bottom shell 171, and the pressing portion 3212 can slide relative to the button groove 1711 and can partially extend out of the bottom shell 171, thereby facilitating the user to press the button 32 and quickly disassemble or install the battery assembly 151 of the electric toothbrush 1, and also effectively preventing the button 32 from detaching from the bottom shell 171, and the limiting step 3211 can also effectively seal the button groove 1711, thereby improving the sealing performance of the electric toothbrush 1.

[0068] Please refer to further Figures 8 to 13 Further, the battery front cover 172 is provided with a reset groove 1721 at the position corresponding to the button groove 1711, and a button hole 1722 is opened at the axis of the reset groove 1721, and a fixed step 1723 is provided at the junction of the button hole 1722 and the reset groove 1721; the button body 321 is slidably connected with the button hole 1722; the button reset member 33 is configured as a reset spring, one end of the button reset member 33 is fixed on the end surface of the limiting step 3211 away from the pressing portion 3212, and the other end of the button reset member 33 is fixed between the reset groove 1721 and the fixed step 1723, and the button body 321 is slidably connected with the button hole 1722.

[0069] It can be understood that one end of the button reset member 33 is pressed against the end surface of the limiting step 3211 away from the pressing portion 3212, one end of the button reset member 33 is pressed against the bottom of the reset groove 1721, and the end of the button reset member 33 away from the limiting step 3211 is sleeved on the outer peripheral surface of the fixing step 1723, so that the button 32 can slide relative to the battery fixing assembly 17, the battery assembly 151, the drive assembly 12 and the drive fixing assembly 11, thereby providing a guarantee for quickly disassembling or installing the battery assembly 151 of the electric toothbrush 1.

[0070] In some other preferred embodiments, the button body 321 is provided with a first air channel 3213 at the axis center, and the housing limit portion 322 is provided with a second air channel 3221 extending along the circumference of the electric toothbrush body 15 and vertically connected to the first air channel 3213; the air pressure balance connection mechanism 31 also includes: an air cushion 34 accommodated in the second air channel 3221 and used to seal the second air channel 3221; wherein the air cushion 34 is provided with air outlets 341 connected to the second air channel 3221 at both ends along the circumference of the electric toothbrush body 15. The outer periphery of the button body 321 is provided with a sealing groove 3214, and the button 32 also includes a sealing ring 324, and the sealing ring 324 is sleeved in the sealing groove 3214.

[0071] It can be understood that by opening the first air channel 3213 and the second air channel 3221 on the button 32, and setting the air cushion 34, and setting the air outlet 341 on the air cushion 34, and in the assembled state, the air outlet 341 of the air cushion 34 is only pressed against the inner surface of the bottom shell 171 under the action of the button reset member 33, and then is sealed, and the sealing ring 324 is used to seal the button hole 1722, thereby effectively improving the sealing performance of the electric toothbrush 1.

[0072] When disassembling the power seat 18 (battery assembly 151 and battery fixing assembly 17), after pressing the button 32, the air outlet 341 of the air cushion 34 is separated from the inner surface of the bottom shell 171, so that the outside air enters the interior of the electric toothbrush body 15, which facilitates the disassembly of the power seat 18; at the same time, when installing the power seat 18, the button 32 is pressed to compress the button reset member 33, and the connector bracket 116 of the toothbrush handle 19 (drive assembly 12, drive fixing assembly 11 and brush head assembly 13) is clamped on the drive locking portion 323 of the button 32. At this time, the button 32 is released, and the button reset member 33 pushes the button 32 to reset toward the bottom shell 171, so that the air outlet 341 of the air cushion 34 contacts the inner surface of the bottom shell 171 and is sealed, so that a closed space is formed inside the electric toothbrush body 15, and the reset spring is completely reset at this time, and the air cushion 34 It is configured as an elastic air cushion 34, and then the button reset member 33 continues to push the button 32 out of the electric toothbrush body 15. At this time, the air cushion 34 is compressed, so that a negative pressure state is formed inside the electric toothbrush 1, which improves the waterproof performance of the electric toothbrush body 15 and improves the connection stability between the power socket 18 and the toothbrush handle 19, that is, improves the connection stability between the battery assembly 151 and the drive assembly 12.

[0073] In some other preferred embodiments, the drive locking portion 323 includes an integrally formed disengagement end 3231 and a locking end 3232, and the locking end 3232 is arranged at one end of the disengagement end 3231 away from the shell limiting portion 322, and the outer diameter of the disengagement end 3231 is smaller than the outer diameter of the locking end 3232; the connector bracket 116 is correspondingly provided with a locking opening 1161 extending along the axial direction of the connector bracket 116, and the locking opening 1161 includes a locking portion 1162, and an opening portion 1163 arranged on a side of the locking portion 1162 close to the battery assembly 151; wherein, the outer diameter of the locking end 3232 is smaller than the inner diameter of the locking portion 1162, the outer diameter of the disengagement end 3231 is smaller than the inner diameters of the locking portion 1162 and the opening portion 1163, and the size of the junction of the opening portion 1163 and the locking portion 1162 is smaller than the maximum outer diameter of the locking portion 1162.

[0074] It can be understood that the locking end 3232 is engaged with the locking portion 1162 of the connector bracket 116, and the disengagement end 3231 can freely enter and exit the locking port 1161. Then, when installing the battery assembly 151, the button 32 is pressed down so that the disengagement end 3231 and the locking port 1161 are in the same plane. At this time, the power socket 18 is inserted along the axial direction of the electric toothbrush body 15 so that the disengagement end 3231 enters the opening portion 1163 and the locking portion 1162 in turn, and then the button 32 is released so that the locking portion 1162 slides into the locking portion 1162, and the button 32 is fixedly connected to the connector bracket 116, thereby finally achieving a fixed connection between the battery assembly 151 and the drive assembly 12.

[0075] In some other preferred embodiments, the locking portion 1162 includes: an accommodating end 1164 and a fixed step end 1165; the accommodating end 1164 is adapted to the locking end 3232; the fixed step end 1165 is arranged on the side of the accommodating end 1164 close to the shell limiting portion 322; wherein, the inner diameter of the fixed step end 1165 is smaller than the outer diameter of the locking end 3232, and the outer diameter of the disengagement end 3231 is smaller than the inner diameter of the fixed step end 1165; the size of the junction of the opening portion 1163 and the locking portion 1162 is smaller than the maximum outer diameter of the locking portion 1162, and the maximum outer diameter of the disengagement portion is smaller than the size of the junction of the opening portion 1163 and the locking portion 1162.

[0076] It can be understood that when the disengagement portion slides into the locking portion 1162, the button reset member 33 pushes the button 32, so that the locking end 3232 slides into the accommodating end 1164 and is stopped by the fixed step end 1165, thereby finally completing the assembly of the power socket 18 and the toothbrush handle 19. By controlling the relative dimensions among the fixed step end 1165, the accommodating end 1164, the locking end 3232 and the disengagement end 3231, the button 32 can be effectively prevented from accidentally disengaging from the connector bracket 116, thereby improving the connection strength between the battery assembly 151 and the drive assembly 12.

[0077] In other preferred embodiments, the accommodating end 1164 cooperates with the conical surface of the locking end 3232, and the inner diameter of the accommodating end 1164 decreases in the direction toward the fixed step end 1165; the opening portion 1163 is configured to be a trumpet shape, and the inner diameter of the opening portion 1163 decreases in the direction toward the locking portion 1162.

[0078] It can be understood that by matching the conical surface of the accommodating end 1164 with the locking end 3232, a guiding effect is played when the locking end 3232 matches the accommodating end 1164, and the locking end 3232 can be easily slid into the accommodating end 1164; the opening portion 1163 is set to a trumpet shape to facilitate the clamping of the connector bracket 116 and the button 32.

[0079] In the second embodiment of the present invention, an electric toothbrush 1 is provided, which includes: the air pressure balance connection structure 30 as described in the above embodiment of the present invention. It can be understood that by detachably connecting the driving assembly 12 and the battery assembly 151, the replacement and maintenance of the battery assembly 151 is guaranteed, and by providing the air pressure balance connection mechanism 31 for connecting the driving assembly 12 and the battery assembly 151, the replacement and maintenance of the battery assembly 151 of the electric toothbrush 1 is further facilitated, thereby improving the service life of the electric toothbrush 1.

[0080] In summary, the present invention provides an air pressure balance connection structure and an electric toothbrush. The air pressure balance connection structure is used for an electric toothbrush, and includes: an electric toothbrush body, the electric toothbrush body includes a drive assembly and a battery assembly, and the battery assembly is electrically connected to the drive assembly; an air pressure balance connection mechanism, the air pressure balance connection mechanism is arranged on the electric toothbrush body and is used to connect the drive assembly and the battery assembly. It can be understood that by detachably connecting the drive assembly and the battery assembly, it provides a guarantee for the replacement and maintenance of the battery assembly, and by providing an air pressure balance connection mechanism for connecting the drive assembly and the battery assembly, it further facilitates the replacement and maintenance of the battery assembly of the electric toothbrush, thereby improving the service life of the electric toothbrush.

[0081] It should be understood that the application of the present invention is not limited to the above examples. For ordinary technicians in this field, improvements or changes can be made based on the above description. All these improvements and changes should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A pressure balance connection structure for an electric toothbrush, It is characterized in that include: An electric toothbrush body, the electric toothbrush body comprising a drive assembly and a battery assembly, the battery assembly being electrically connected to the drive assembly; An air pressure balance connection mechanism, which is disposed on the electric toothbrush body and is used to connect the drive assembly and the battery assembly; The air pressure balance connection mechanism includes a button; The button comprises a button body and a housing limiting portion; A first air channel is provided at the axis of the button body, and a second air channel extending along the circumference of the electric toothbrush body and vertically connected to the first air channel is provided on the housing limiting portion; the air pressure balance connection mechanism further comprises: an air cushion accommodated in the second air channel and used to seal the second air channel; wherein, air outlets connected to the second air channel are provided at both ends of the air cushion along the circumference of the electric toothbrush body; The outer circumference of the button body is provided with a sealing groove, and the button further comprises a sealing ring, which is sleeved in the sealing groove.

2. The air pressure balancing connection structure according to claim 1, It is characterized in that The air pressure balance connection structure also includes a detachably connected drive fixing assembly and a battery fixing assembly; The driving and fixing assembly is provided with a joint bracket, and the driving assembly is arranged on the driving and fixing assembly; The battery fixing assembly is provided with a bottom shell and a battery front cover, and the battery assembly is arranged on the bottom shell and the battery front cover; Among them, the battery assembly is detachably connected to the drive assembly, the connector bracket is detachably connected to the battery front cover, one end of the air pressure balance connection mechanism is detachably connected to the bottom shell, the battery assembly and the battery front cover, and the other end of the air pressure balance connection mechanism is detachably connected to the connector bracket.

3. The air pressure balancing connection structure according to claim 2, It is characterized in that The button is slidably connected with the battery fixing assembly, the battery assembly and the connector bracket in sequence from outside to inside along the radial direction of the electric toothbrush body; A button reset piece is sleeved on the button between the bottom shell and the battery assembly and is used to push the button to automatically lock the drive assembly.

4. The air pressure balancing connection structure according to claim 3, It is characterized in that The housing limiting portion is arranged at one end of the button body in the length direction, and is used to limit the button body in the bottom housing; A drive locking portion is provided on an end of the button body in the length direction away from the housing limiting portion, and is used to lock and fix the joint bracket.

5. The air pressure balancing connection structure according to claim 4, It is characterized in that The housing limiting portion includes a limiting step and a pressing portion arranged at an end of the limiting step away from the button body; The bottom shell is provided with a button slot at the end facing the driving fixing assembly, the battery front cover is provided with a reset slot at a position corresponding to the button slot, and a button hole is provided at the axis of the reset slot, and a fixed step is provided at the junction of the button hole and the reset slot; The hole diameter of the button groove is smaller than the outer diameter of the limiting step, and the limiting step is matched with the inner surface of the bottom shell, the button body is slidably connected to the button hole, and the pressing part is slidably connected to the button groove; The button reset member is configured as a reset spring, one end of the button reset member is fixed to the end surface of the limiting step away from the pressing portion, the other end of the button reset member is fixed between the reset groove and the fixed step, the button body is slidably connected to the button hole, and the pressing portion is slidably connected to the button groove.

6. The air pressure balancing connection structure according to claim 4, It is characterized in that The driving locking portion includes an integrally formed disengaging end and a locking end, and the locking end is arranged at an end of the disengaging end away from the housing limiting portion, and the outer diameter of the disengaging end is smaller than the outer diameter of the locking end; The joint bracket is correspondingly provided with a locking opening extending along the axial direction of the joint bracket, and the locking opening includes a locking portion and an opening portion arranged on a side of the locking portion close to the battery assembly; Among them, the outer diameter of the locking end is smaller than the inner diameter of the locking part, the outer diameter of the disengagement end is smaller than the inner diameters of the locking part and the opening part, and the size of the junction between the opening part and the locking part is smaller than the maximum outer diameter of the locking part.

7. The air pressure balancing connection structure according to claim 6, It is characterized in that The locking portion comprises: an accommodating end, the accommodating end being adapted to the locking end; A fixed step end, the fixed step end is arranged on a side of the accommodating end close to the housing limiting portion; Among them, the inner diameter of the fixed step end is smaller than the outer diameter of the locking end, and the outer diameter of the disengagement end is smaller than the inner diameter of the fixed step end; the size of the junction between the opening portion and the locking portion is smaller than the maximum outer diameter of the locking portion, and the maximum outer diameter of the disengagement end is smaller than the size of the junction between the opening portion and the locking portion.

8. The air pressure balancing connection structure according to claim 7, It is characterized in that The accommodating end cooperates with the conical surface of the locking end, and the inner diameter of the accommodating end decreases in a direction toward the fixed step end; The opening portion is configured to be in a bell-mouth shape, and an inner diameter of the opening portion decreases gradually in a direction toward the locking portion.

9. An electric toothbrush, It is characterized in that include: An air pressure balancing connection structure as described in any one of claims 1 to 8.

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