Sealing structure, nursing head, transmission shaft and individual protection equipment

Abstract

The utility model relates to a sealing structure, nursing head, transmission shaft and individual protection equipment, the sealing structure is used for being arranged between two flow channels so as to enable the two flow channels to form sealing connection, the two ends of the sealing structure are respectively provided with an inserting groove for the corresponding flow channel to be inserted, and the sealing structure is arranged in the inserting groove. The sealing structure is further internally provided with two side openings and a connecting channel, the two side openings communicate with the corresponding inserting-connecting grooves, the two ends of the connecting channel communicate with the two side openings correspondingly, and when the two inserting-connecting grooves are inserted into the corresponding flow channels, the two flow channels communicate with the connecting channel through the corresponding side openings.

Description

Technical Field

[0001] This utility model relates to the field of personal care equipment manufacturing technology, and in particular to a sealing structure, a care head, a drive shaft, and personal care equipment. Background Technology

[0002] For ease of use, personal care devices often incorporate detachable and replaceable components. This is especially true for devices that automatically dispense consumables. To fulfill both the automatic dispensing function and the need for replaceable components, a consumable flow channel must be incorporated within the device, often a multi-segment channel. In other words, the device requires separate consumable flow channels on both the main unit and the replaceable components for consumable transport. However, because the consumables flow through multiple channels, leakage is a common problem at the junctions of these channels. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a sealing structure, a nursing head, a drive shaft, and a personal care device, which solves the problem of leakage at the connection of multiple flow channels.

[0004] To achieve the above objectives, the technical solution adopted in this embodiment of the utility model is: a sealing structure, used to be disposed between two flow channels so that the two flow channels form a sealed connection.

[0005] The sealing structure has insertion slots at both ends for corresponding flow channels to be inserted, and the sealing structure also has two side openings that are respectively connected to the corresponding insertion slots and two connecting channels that are respectively connected to the two side openings. When the corresponding flow channels are inserted into the two insertion slots, the two flow channels are connected to the connecting channels through the corresponding side openings.

[0006] Optionally, the connecting channel includes a first inner sidewall and a second inner sidewall disposed opposite to each other, wherein the first inner sidewall is configured to be shorter than the second inner sidewall, thereby forming two side openings at both ends of the first inner sidewall.

[0007] Optionally, the flow channel includes multiple sub-flow channels; the sealing structure further includes a first partition portion disposed within the connection channel, the first partition portion dividing the connection channel into multiple sub-connection channels, and the opposite ends of the first partition portion are respectively provided with grooves communicating with the corresponding insertion slots.

[0008] Optionally, each of the sub-connecting channels includes a first sub-inner sidewall and a second sub-inner sidewall disposed opposite to each other, wherein the first sub-inner sidewall is disposed on the side close to the first partition and is shorter than the second sub-inner sidewall, thereby forming two side openings at both ends of the first sub-inner sidewall.

[0009] Optionally, a transition groove is provided in the connection channel, the transition groove being formed by a recess in at least a portion of the inner sidewall of the connection channel in the radial direction.

[0010] Optionally, the sealing structure is made of an elastic material.

[0011] This utility model embodiment also provides a nursing head, including:

[0012] Nursing end;

[0013] The connecting rod connected to the nursing end;

[0014] The first flow channel and the sealing structure are disposed within the connecting rod;

[0015] The first flow channel is provided with a plug end that is adapted to the plug groove of the sealing structure and a first side opening for communicating with the side opening of the sealing structure.

[0016] Optionally, the connecting rod includes a first portion near the nursing end and a second portion away from the nursing end, the first portion being provided with a first flow channel, the second portion being hollow to form a receiving cavity, and the sealing structure being provided in the receiving cavity; the insertion end is provided at the connection between the first portion and the second portion.

[0017] Optionally, the nursing head further includes a second partition disposed within the first flow channel, the second partition being used to divide the first flow channel into a plurality of first sub-flow channels;

[0018] The plug-in end is formed by the second partition extending away from the first part, and the portion of the second partition extending out of the first part defines the first side opening.

[0019] Optionally, the nursing head further includes a locking member disposed in the receiving cavity and sealed to the sealing structure. The locking member includes a main body and a slot extending through the main body in an axial direction. The slot communicates with the insertion groove and is used for insertion of the second flow channel.

[0020] Optionally, the inner wall of the sealing structure near one end of the engaging member is provided with a first stepped connecting portion, and the engaging member near one end of the sealing structure is provided with a boss to form a second stepped connecting portion. The second stepped connecting portion cooperates with the first stepped connecting portion to make the engaging member and the sealing structure seal together.

[0021] Optionally, the inner wall of the engaging component and the second flow channel are connected by an engaging connection through a structure that adapts to the engaging component and the slot.

[0022] And / or, the outer wall of the engaging member and the inner wall of the connecting rod are connected by a structure adapted to a slide rail and a slider;

[0023] And / or, the outer wall of the sealing structure near one end of the engaging member forms a sealed connection with the inner wall of the connecting rod through a structure in which a sealing ring and a sealing groove are adapted to each other.

[0024] This utility model embodiment also provides a drive shaft.

[0025] The drive shaft is provided with a second flow channel, which has a second insertion end that matches the insertion groove of the sealing structure and a second side opening for communicating with the side opening of the sealing structure.

[0026] Optionally, the drive shaft further includes:

[0027] A third partition is disposed within the second flow channel and is used to divide the second flow channel into multiple second sub-flow channels;

[0028] The second plug-in end is formed by the third partition extending along the axial direction of the drive shaft, and the second side opening is defined by the portion of the third partition extending out of the drive shaft.

[0029] Optionally, the second insertion end of the drive shaft is provided with an end cap.

[0030] This utility model embodiment also provides a personal care device, including the above-described care head and the above-described drive shaft for connecting to the care head.

[0031] The beneficial effects of this utility model are as follows: This utility model provides a sealing structure for sealingly connecting two flow channels. The sealing structure has insertion slots at both ends for corresponding flow channels to be inserted into. The sealing structure also has two side openings communicating with the corresponding insertion slots and a connecting channel communicating with the two side openings at both ends. When the corresponding flow channels are inserted into the two insertion slots, the two flow channels are connected to the connecting channel through the corresponding side openings. Through this insertion method, the sealing structure and the two flow channels can form a sealed connection combining end-face sealing and side-face sealing, thereby ensuring a good sealing effect.

[0032] In addition, by opening the side opening, the consumables in the two flow channels can flow from the side of the sealing structure, which helps to increase the flow area of ​​the consumables at the connection of the two flow channels, increase the flow rate of the consumables, and facilitate the transmission of consumables between the two flow channels. Attached Figure Description

[0033] Figure 1A three-dimensional schematic diagram showing the sealing structure in an embodiment of the present utility model;

[0034] Figure 2 Another perspective view showing the sealing structure in an embodiment of the present utility model;

[0035] Figure 3 A cross-sectional schematic diagram showing the sealing structure in an embodiment of this utility model;

[0036] Figure 4 Another cross-sectional schematic diagram showing the sealing structure in an embodiment of the present utility model;

[0037] Figure 5 This is a three-dimensional schematic diagram of the personal care device in an embodiment of the present utility model;

[0038] Figure 6 This is a partial cross-sectional view of the personal care device in an embodiment of the present invention;

[0039] Figure 7 express Figure 6 An enlarged schematic diagram of Part A of the personal care equipment;

[0040] Figure 8 This is a partial cross-sectional view of the nursing head in an embodiment of the present invention;

[0041] Figure 9 express Figure 8 An enlarged diagram of part B of the nursing head;

[0042] Figure 10 This is a partially exploded view of the nursing head in an embodiment of the present invention;

[0043] Figure 11 A schematic diagram showing the connection state of the sealing structure and the engaging component in an embodiment of this utility model;

[0044] Figure 12 A perspective view of the engaging component in an embodiment of this utility model;

[0045] Figure 13 A cross-sectional schematic diagram showing the engaging component in an embodiment of this utility model;

[0046] Figure 14 This is a partially enlarged schematic diagram showing the engaging component connected to the nursing head in an embodiment of the present invention;

[0047] Figure 15 A three-dimensional schematic diagram showing the transmission shaft in an embodiment of this utility model;

[0048] Figure 16 A partial perspective view of the transmission shaft in an embodiment of this utility model;

[0049] Figure 17 This is another perspective view of the transmission shaft in an embodiment of the present invention. Detailed Implementation

[0050] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0051] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “an,” “a,” or “the,” and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms “including,” “comprising,” or “containing,” and similar terms mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. The terms “connected,” “linked,” or similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms “upper,” “lower,” “left,” and “right,” etc., are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described objects changes.

[0052] The features such as "parallel," "perpendicular," and "identical" used in the embodiments of this disclosure include features in the strict sense of "parallel," "perpendicular," and "identical," as well as cases where "approximately parallel," "approximately perpendicular," and "approximately identical" include certain tolerances. Taking into account the measurement and the tolerances associated with the measurement of a specific quantity (e.g., limitations of the measurement system), they represent the acceptable deviation range for a specific value as determined by a person skilled in the art. For example, "approximately" can mean within one or more standard deviations, or within 3% or 5% of said value.

[0053] In related technologies, the first flow channel and the second flow channel are connected by abutting their end faces. However, the end face of the first flow channel is flat, and the end face of the second flow channel is flat. This connection method can easily cause leakage of consumables at the connection between the first flow channel and the second flow channel.

[0054] refer to Figures 1-17To address the aforementioned problems, this embodiment provides a sealing structure for placement between two flow channels, thereby forming a sealed connection between the two flow channels.

[0055] The sealing structure 1 has insertion slots 101 at both ends for corresponding flow channels to be inserted, and the sealing structure 1 also has two side openings that are respectively connected to the corresponding insertion slots 101 and two connecting channels 110 that are respectively connected to the two side openings. When the two insertion slots 101 are inserted into the corresponding flow channels, the two flow channels are connected to the connecting channels 110 through the corresponding side openings.

[0056] It is understandable that by inserting the connection, the sealing structure 1 can form a sealed connection with the two flow channels, which combines end face sealing and side sealing, thereby ensuring a good sealing effect.

[0057] In addition, by opening a side opening, the consumables in the two channels can flow from the side of the sealing structure 1, which helps to increase the consumable flow area at the connection of the two channels, increase the consumable flow rate, and facilitate the transfer of consumables between the two channels.

[0058] Specifically, the sealing structure 1 includes a sealing body 11 and a first end 103 and a second end 106 located at opposite ends of the sealing body 11. The two flow channels include a first flow channel and a second flow channel. The sealing body 11 is provided with a connecting channel 110 for connecting the first flow channel and the second flow channel.

[0059] The two side openings include a first side opening 1102 and a second side opening 1103. The first side opening 1102 is disposed at one end of the sealing body 11 near the first end 103, and the second side opening 1103 is disposed at one end of the sealing body 11 near the second end 106.

[0060] The connecting channel 110 includes two inner sidewalls disposed opposite each other, wherein one inner sidewall is shorter than the other, thereby forming two side openings at both ends of the shorter inner sidewall. Specifically, the two inner sidewalls include a first inner sidewall 102 and a second inner sidewall 107, wherein the first inner sidewall 102 is configured to be shorter than the second inner sidewall 107, thereby forming a first side opening 1102 and a second side opening 1103 at both ends of the first inner sidewall 102.

[0061] The two side openings of the sealing body 11 increase the area of ​​the inlet and outlet of the connecting channel 110. The two side openings also create a stepped structure at the inlet and outlet of the connecting channel 110. Preferably, the inlet and outlet of the two flow channels are also set as stepped structures. The stepped structure facilitates the formation of side seals and end face seals, thereby enhancing the sealing performance between the sealing structure 1 and the two flow channels. At the same time, the stepped inlet and outlet structure increases the flow area of ​​consumables, facilitating the transfer of consumables.

[0062] In an exemplary embodiment, a transition groove 105 is provided in the connection channel 110, the transition groove 105 being formed by a recess in at least a portion of the inner sidewall of the connection channel 110 in the radial direction.

[0063] In related technologies, the connecting channel 110 is a straight cylindrical channel. In this embodiment, the transition groove 105 is formed by at least a portion of the inner sidewall of the connecting channel 110 being recessed in the radial direction of the connecting channel 110. This can increase the consumable flow space at the connection of the two flow channels, facilitate the flow of consumables, increase the flow rate of consumables, and reduce the load on the consumable transfer pump of the personal care equipment.

[0064] It should be noted that when the sealing structure 1 is applied to the care head 100 of the personal care device, the transition groove 105 is opened in the connecting channel 110. This allows for a larger consumable delivery space while maintaining the same volume of the care head 100, thus meeting the consumable delivery flow rate and reducing the load on the consumable transfer pump of the personal care device.

[0065] It should be noted that, in order to facilitate the connection of the two ends of the connecting channel 110 to the corresponding first flow channel and the second flow channel respectively, the size of the inlet and outlet of the two ends of the connecting channel 110 is set to match the size of the inlet and outlet of the corresponding first flow channel and the second flow channel, and the transition groove 105 is preferably located in the middle area of ​​the connecting channel 110.

[0066] In an exemplary embodiment, the first inner sidewall 102 and the second inner sidewall 107 are disposed opposite each other in the radial direction of the connecting channel 110, and at least a portion of the inner sidewall of at least one of the first inner sidewall 102 and the second inner sidewall 107 is recessed in the radial direction of the connecting channel 110 to form a transition groove 105.

[0067] Optionally, at least one of the first inner sidewall 102 and the second inner sidewall 107 is provided with an arc-shaped inner surface; that is, at least one of the inner sidewalls of the first inner sidewall 102 and the second inner sidewall 107 has a U-shaped structure to form the transition groove 105. Preferably, both the first inner sidewall 102 and the second inner sidewall 107 are provided with arc-shaped inner surfaces to maximize the spatial size of the transition groove 105 and facilitate the flow of consumables.

[0068] It should be noted that the first flow channel and the second flow channel can be a single flow channel or include multiple flow channels. Correspondingly, when the first flow channel and the second flow channel include multiple flow channels, the sealing structure 1 also includes multiple connecting channels 110. That is, the number of connecting channels 110 corresponds to the number of corresponding flow channels. This application does not impose specific limitations on this.

[0069] In an exemplary embodiment, the flow channel includes multiple sub-flow channels. Specifically, the first flow channel includes multiple first sub-flow channels 423, and the second flow channel includes multiple second sub-flow channels 32 that are connected to the multiple first sub-flow channels 423 in a one-to-one correspondence.

[0070] The sealing structure 1 further includes a first partition 111 disposed in the connection channel 110. The first partition 111 divides the connection channel 110 into a plurality of sub-connection channels. The opposite ends of the first partition 111 are respectively provided with grooves communicating with the corresponding insertion slots 101.

[0071] In this specific embodiment, the first dividing part 111 divides the connecting channel 110 into multiple first sub-connecting channels 1101, and the first sub-connecting channels 1101 are used to connect the corresponding first sub-flow channel 423 and the second sub-flow channel 32.

[0072] The first partition 111 has two grooves at opposite ends, including a first groove 108 and a second groove 104. Corresponding to the arrangement of the first groove 108 and the second groove 104, the first flow channel is provided with a first connecting protrusion 4001 that mates with the first groove 108, and the second flow channel is provided with a second connecting protrusion 31 that mates with the second groove 104. Figure 7As shown, the first groove 108 is used for the insertion of the first connecting protrusion 4001, and the second groove 104 is used for the insertion of the second connecting protrusion 31. In this way, the end face of the first groove 108 and the end face of the first connecting protrusion 4001 form an end face seal, and the side face of the first groove 108 and the side face of the first connecting protrusion 4001 form a side face seal. By combining the end face seal with the side face seal, the problem of mixing and cross-contamination of consumables between two adjacent sub-channels of the first and second flow channels can be avoided.

[0073] In other words, the first flow channel includes multiple independent first sub-flow channels 423, and the second flow channel includes multiple independently configured second sub-flow channels 32 that are connected to the multiple first sub-flow channels 423 in a one-to-one correspondence. At this time, the consumables transmitted through different sub-flow channels can be the same or different. The first groove 108 and the first connecting protrusion 4001 cooperate to achieve a plug-in sealed connection between the first flow channel and the sealing structure 1, and the second groove 104 and the second connecting protrusion 31 cooperate to achieve a plug-in sealed connection between the second flow channel and the sealing structure 1. This can effectively prevent consumable leakage and mixing between two adjacent first sub-flow channels 423 or two adjacent second sub-flow channels 32.

[0074] In an exemplary embodiment, the shape of the cross-section of the first sub-channel 423 in its radial direction can be circular, elliptical, triangular, quadrilateral, or other polygonal or irregular shapes, and this embodiment does not impose any limitations on this. In a specific embodiment, the radial cross-section of the first sub-channel 423 is quadrilateral.

[0075] The shape of the cross-section of the first sub-connecting channel 1101 in its radial direction can be circular, elliptical, triangular, quadrilateral, or other polygonal or irregular shapes, and this embodiment does not impose any limitations on this. In a specific embodiment, the radial cross-section of the first sub-connecting channel 1101 is quadrilateral.

[0076] The shape of the cross-section of the second sub-channel 32 in its radial direction can be circular, elliptical, triangular, quadrilateral, or other polygonal or irregular shapes, and this embodiment does not impose any limitations on this. In one specific embodiment, the radial cross-section of the second sub-channel 32 is quadrilateral.

[0077] It is understandable that by combining end face sealing and side sealing, even if the bottom of the first groove 108 does not abut against the corresponding end face of the first connecting protrusion 4001, i.e., the insertion is not in place, the sealing connection between the first flow channel and the sealing structure 1 can still be achieved through the connection between the side of the first groove 108 and the side of the first connecting protrusion 4001, thus preventing the leakage of consumables.

[0078] Similarly, the second groove 104 and the second connecting protrusion 31 have the same sealing effect as the first groove 108 and the first connecting protrusion 4001. The end face of the second groove 104 and the end face of the second connecting protrusion 31 form an end face seal, and the side face of the second groove 104 and the side face of the second connecting protrusion 31 form a side face seal. This also avoids the problem of consumables flowing between adjacent sub-channels and causing mixing and cross-contamination. Even if the end face of the second groove 104 does not abut against the corresponding end face of the second connecting protrusion 31, i.e., the insertion is not in place, the connection between the side face of the second groove 104 and the side face of the second connecting protrusion 31 can still achieve a sealing connection between the second channel and the sealing structure 1, thus preventing consumable leakage.

[0079] In summary, the first flow channel and the sealing structure 1 are connected by a plug-in connection, and the second flow channel and the sealing structure 1 are also connected by a plug-in connection. This increases the connection surface, enhances the sealing performance, and effectively prevents leakage of consumables transported in the first and second flow channels.

[0080] refer to Figure 3 and Figure 4 In an exemplary embodiment, each of the sub-connecting channels of the connecting channel 110 includes a first sub-inner sidewall 1021 and a second sub-inner sidewall 1071 disposed opposite to each other. The first sub-inner sidewall 1021 is disposed on a side close to the first partition 111 and is shorter than the second sub-inner sidewall 1071, thereby forming a first side opening 1102 and a second side opening 1103 at both ends of the first sub-inner sidewall 1021.

[0081] By adopting the above solution and opening a side opening, the area of ​​the consumable inlet / outlet between the corresponding flow channel and the connecting channel 110 is increased, which facilitates the transmission of consumables.

[0082] By adopting the above scheme, the area of ​​the consumable inlet and outlet connected to the first sub-connection channel 1101 and the corresponding first sub-flow channel 423 and second sub-flow channel 32 is increased, which facilitates the transmission of consumables in the first sub-connection channel 1101 through the first sub-flow channel 423 and the second sub-flow channel 32.

[0083] In an exemplary embodiment, the sealing body 11 is made of an elastic material, such as soft rubber or PVC. The sealing structure 1 is also made of an elastic material, allowing it to undergo elastic deformation and form a good sealing connection with the first and second flow channels. It is understood that the sealing structure 1 is sealed to the first and second flow channels via an interference fit to ensure a good sealing and leak-proof effect.

[0084] It is understood that the first and second flow channels of this application can be any two flow channels in the consumable delivery flow channels of the personal care device, such as the consumable flow channels in the care head and handle of the personal care device, the consumable transfer pump and care power device in the handle, or the consumable flow channels in the handle and consumable container, respectively. This application does not limit them.

[0085] For example, refer to Figures 5-14 This application provides specific embodiments of a consumable flow channel in which the first flow channel is the nursing head of a personal care device and the second flow channel is the handle of a personal care device.

[0086] In other words, this utility model embodiment also provides a nursing head 100, which is applied to personal care devices. The nursing head 100 includes a nursing end 41, a connecting rod 42 connected to the nursing end 41, a first flow channel disposed in the connecting rod 42, and the sealing structure 1. The first flow channel is provided with a plug end 43 adapted to the plug groove 101 of the sealing structure 1 and a first side opening 44 for communicating with the side opening of the sealing structure 1.

[0087] The first flow channel is sealed to the second flow channel via the aforementioned sealing structure 1; along the extending direction of the connecting rod 42, the connecting rod 42 includes a first portion 421 near the nursing end 41 and a second portion 422 away from the nursing end 41. Figure 8 The first part 421 and the second part 422 are distinguished by dashed lines. It should be understood that there are no dashed lines in the actual structure. Figure 8 (The dashed line in the middle) The first part 421 is provided with the first flow channel, the second part 422 is hollow to form a receiving cavity 45, and the plug-in end 43 is provided at the connection between the first part 421 and the second part 422.

[0088] refer to Figure 8In an exemplary embodiment, the nursing head 100 further includes a second partition 401 disposed within the first flow channel. The second partition 401 is used to divide the first flow channel into a plurality of first sub-flow channels 423. The insertion end 43 is formed by extending from the second partition 401 in a direction away from the first portion 421. The portion of the second partition 401 extending out of the first portion 421 defines the first side opening 44.

[0089] In an exemplary embodiment, the first portion 421 is provided with a first connecting protrusion 4001 for sealing connection with the sealed structure 1 at one end near the second portion 422, that is, the plug end 43 includes the first connecting protrusion 4001.

[0090] Furthermore, the nursing head 100 also includes a locking member 2, which is disposed in the receiving cavity 45 and sealed to the sealing structure. The locking member 2 includes a main body 210 and a slot 203 that passes through the main body 210 in the axial direction. The slot 203 communicates with the insertion groove 101 and is used for inserting the drive shaft 3.

[0091] The sealing structure 1 has a first stepped connecting portion 1011 on its inner side wall near one end of the engaging member 2. The engaging member 2 has a boss at one end near the sealing structure 1 to form a second stepped connecting portion 2011. The second stepped connecting portion 2011 cooperates with the first stepped connecting portion 1011 to make the engaging member 2 and the sealing structure 1 sealed together.

[0092] refer to Figure 3 , Figure 7 and Figure 13 The first step connecting portion 1011 includes a first inner edge 1001, a first bottom edge 1002 connecting the first inner edge 1001, a second inner edge 1003 connecting the first bottom edge 1002, and a second bottom edge 1004 connecting the second inner edge 1003. The second step connecting portion 2011 includes a first top edge 2001, a first outer wall 2002 connected to the first top edge 2001, and a second top edge 2003 connected to the first outer wall 2002.

[0093] The first inner edge 1001 abuts against the outer wall of the drive shaft 3 to form a side seal, constituting the first sealing line. The first bottom edge 1002 abuts against the first top edge 2001 of the engaging member 2 to form an end face seal, constituting the second sealing line. The second inner edge 1003 abuts against the first outer wall 2002 of the engaging member 2 to form a side seal, constituting the third sealing line. The second bottom edge 1004 abuts against the second top edge 2003 of the engaging member 2 to form an end face seal, constituting the fourth sealing line. Thus, by employing the above-described sealing structure 1, a good sealing effect can be achieved, preventing leakage during consumable transmission.

[0094] In exemplary implementations, such as Figures 12 to 14 As shown, the second flow channel is disposed on the drive shaft 3. The engagement member 2 enables the connection between the nursing head 100 and the drive shaft 3, thereby allowing the drive shaft 3 to provide power to realize the mechanical movement of the nursing head 100. The inner sidewall of the engagement member 2 and the second flow channel are engaged and connected through a structure that adapts to the engagement member and the slot.

[0095] Specifically, the inner sidewall of the engaging member 2 is provided with a first engaging member 2041 for engaging with the transmission shaft 3, and the transmission shaft 3 is provided with a slot 34 adapted to the first engaging member 2041.

[0096] In some embodiments, the transmission shaft 3 may be provided with the first snap-fit ​​member 2041, and the snap-fit ​​member 2 may be provided with the snap-fit ​​groove 34. That is, the positions of the snap-fit ​​member and the snap-fit ​​groove may be reversed. This application does not limit the number or position of the snap-fit ​​member and the snap-fit ​​groove.

[0097] In some specific embodiments, the first snap-fit ​​member 2041 is provided with an arc-shaped guide surface, but this is not a limitation; see reference. Figure 13 The arc-shaped guide surface facilitates the assembly and disassembly of the engaging component 2 and the drive shaft 3.

[0098] refer to Figure 13 For example, a through hole is provided on the side wall of the engaging member 2, and an elastic arm 204 is provided in the through hole. The extending direction of the elastic arm 204 is parallel to the axial direction of the main body 210. The end of the elastic arm 204 away from the sealing structure 1 is a free end, and the first engaging member 2041 is provided on the side of the elastic arm 204 near the center of the slot 203. A slot that cooperates with the first engaging member 2041 is provided on the drive shaft 3. The provision of the elastic arm 204 facilitates the disassembly and assembly of the drive shaft 3 and the engaging member 2, realizing a detachable connection between the engaging member 2 and the drive shaft 3.

[0099] In an exemplary embodiment, the outer side wall of the engaging member 2 is provided with a second engaging member 205 for engaging with the inner side wall of the receiving cavity. In some specific embodiments, the second engaging member 205 is a protrusion provided on the outer side wall of the engaging member 2, and the inner side wall of the second portion 422 is provided with an engaging groove that mates with the second engaging member 205, but this is not a limitation.

[0100] The outer wall of the engaging component 2 and the inner wall of the connecting rod 42 are connected by a sliding rail and a slider. (Reference) Figure 12 In an exemplary embodiment, a slide rail 202 is provided on the outer side wall of the engaging member 2, and a slider that cooperates with the slide rail 202 is provided on the inner side wall of the connecting rod 42.

[0101] Alternatively, a slider may be provided on the outer side wall of the engaging member 2, and a slide rail 202 that cooperates with the slider may be provided on the inner side wall of the connecting rod 42 cavity.

[0102] In other words, the slide rail 202 and the slider can be set in opposite directions, and the number of slide rail 202 and slider can be one or more. This application does not limit the number of slide rails and sliders or their setting positions.

[0103] The outer wall of the sealing body 11 near the end of the engaging member 2 and the inner wall of the connecting rod 42 form a sealed connection through a structure in which a sealing ring and a sealing groove are adapted to each other.

[0104] In an exemplary embodiment, the outer side wall of the second end 106 of the sealing body 11 extends outward to form a sealing ring 12, which is used to seal the connection with the first flow channel (e.g., the body of the nursing head 100) to ensure a sealing effect.

[0105] Preferably, the sealing ring 12 is an annular sealing ring.

[0106] refer to Figures 12-14 In an exemplary embodiment, the main body 210 is provided with a flange 206 at one end away from the sealing body 11, and the second part 422 is provided with a stepped surface that abuts against the flange 206 at one end away from the first part 421.

[0107] For example, the engaging member 2 is disposed within the nursing head 100, and the end face of the main body portion 210 away from the sealing structure 1 and the end face of the second portion 422 away from the first portion 421 are flush, so as to facilitate the connection of the nursing head 100 with the handle of the personal care device.

[0108] In an exemplary embodiment, the diameter of the nursing head 100 gradually increases from top to bottom (from the nursing end to the connecting rod). Therefore, the diameter of the sealing structure gradually increases from top to bottom, with the end connected to the nursing head 100 having a smaller diameter and the end connected to the drive shaft 3 having a larger diameter.

[0109] It should be noted that the care head 100 can be applied to any automatic liquid dispensing device in the personal care field, and is not limited thereto. For example, the care head 100 can be a toothbrush head, massage head, application head, hair care head, hair trimming head, etc., used to perform care operations such as brushing teeth, massaging, applying, hair care, and hair trimming. The consumables conveyed through the first flow channel and the second flow channel can be one or more of the following: toothpaste, mouthwash, oral care solution, facial cleanser, skin care products, shampoo, and cleaning solution.

[0110] In an exemplary embodiment, the nursing head 100 is a toothbrush head, which includes a brush handle (i.e., connecting rod 42) and a head (i.e., nursing end 41) connected to the brush handle. The liquid inlet is located on the brush handle. The brush head also includes bristles and a one-way valve 4103 located on the head. The bristles include first bristles 4101 and second bristles 4102. The first bristles 4101 and second bristles 4102 can be any one or more different types of bristles in terms of material, length, color, etc. The one-way valve 4103 is connected to the first flow channel and serves as a consumable outlet. The one-way valve 4103 prevents backflow and also locks in freshness to prevent the toothpaste from drying out and clogging the consumable outlet. Additionally, it prevents external water from entering the toothpaste and contaminating it. (See reference...) Figure 10 .

[0111] For example, the one-way valve 4103 is located in the middle of the head, or it can be located at any position in the head (up, down, left, right). There can be one or more of them. When there are multiple valves, the one-way valve can be connected to the corresponding first sub-channel 423. Multiple one-way valves 4103 can be arranged regularly, irregularly, or around each other. There are no restrictions here.

[0112] Understandably, reference Figure 7 , Figure 15 and Figure 16 This utility model embodiment also provides a drive shaft 3, which has a second flow channel, a second insertion end 37 adapted to the insertion groove 101 of the sealing structure 1, and a second side opening 36 for communicating with the side opening of the sealing structure 1.

[0113] refer to Figure 3 and Figure 7When the drive shaft 3 is connected to the sealing structure 1, the second side opening 36 of the drive shaft 3 communicates with the second side opening 1103 of the sealing structure 1, thereby forming a state in which the second flow channel is connected to the connecting channel 110. By adopting the above scheme, the structure of the side openings and side openings increases the consumable inlet and outlet area of ​​the second flow channel, enlarges the consumable flow space, and facilitates the transfer of consumables between the second flow channel and the connecting channel 110.

[0114] In an exemplary embodiment, the drive shaft 3 extends along its axial direction and forms a second connecting protrusion 31 for sealing connection with the sealing structure 1. The second connecting protrusion 31 is adapted to the second groove 104 of the sealing body 11 to increase the sealing connection surface and enhance the sealing performance.

[0115] refer to Figure 14 In an exemplary embodiment, the drive shaft further includes a third partition 33, which is disposed within the second flow channel. The third partition 33 is used to divide the second flow channel into a plurality of second sub-flow channels 32. The second insertion end 37 is formed by the third partition 33 extending along the axial direction of the drive shaft 3, and the second side opening 36 is formed by the portion of the third partition 33 extending out of the drive shaft 3.

[0116] In an exemplary embodiment, the outer side wall of the drive shaft 3 is provided with a slot 34 for engaging with the first snap-fit ​​member 2041 on the snap-fit ​​member 2.

[0117] refer to Figure 16 In an exemplary embodiment, the outer wall of the drive shaft 3 is provided with a foolproof groove 35, which is used to prevent fooling when the drive shaft 3 is connected to the nursing head 100.

[0118] In particular, such as Figure 17 As shown, in one embodiment, the second insertion end 37 of the drive shaft 3 is provided with an end cap, which is used to prevent the consumables of two adjacent sub-channels from mixing. Specifically, the top end of the drive shaft 3 is also provided with an end cap 38 perpendicular to the third partition 33. The end cap 38 is used to further isolate the two second side openings of the drive shaft 3, so as to prevent the consumables of the two second side openings 36 of the drive shaft 3 from being pulled out when the nursing head 100 is removed from the drive shaft 3, thereby avoiding the mixing of two different consumables in the two sub-channels.

[0119] In an exemplary embodiment, the end cap 38 can be integrally formed with the drive shaft 3 or it can be a separate component, which can be made of metal, plastic or soft rubber.

[0120] like Figure 5 and Figure 6 As shown, this utility model embodiment also provides a personal care device, including the above-mentioned care head 100 and the drive shaft 3 connected to the care head 100. The personal care device also includes a handle 200 connected to the care head 100 and a consumable container 300 connected to the handle 200. The care head 100 is provided with a first flow channel, and the handle 200 is provided with a second flow channel. The first and second flow channels are connected to the consumable container 300. The handle 200 is also provided with a consumable transfer pump, which is used to provide power to output the consumables in the consumable container 300 through the second flow channel and the first flow channel to the care end 41 of the care head 100.

[0121] In an exemplary implementation, reference is made to Figures 7-16 The handle 200 of the personal care device is also provided with a nursing power device for driving the nursing head 100 to move (such as vibration, rotation, swing, linear reciprocating motion or a combination thereof). The nursing power device includes a transmission shaft 3 for transmitting consumables. The transmission shaft 3 is hollow to form the second flow channel.

[0122] For example, when the personal care device is an electric toothbrush, the drive shaft 3 is a hollow rotating shaft of a sonic motor, with a second flow channel inside, which can realize the function of consumable transmission while driving the brush head to vibrate and / or rotate. When the personal care device is a skin care device, the drive shaft 3 can be a hollow rotating shaft of a drive motor, with a second flow channel inside, which can realize the function of consumable transmission while driving the massage head to rotate, vibrate, etc., to realize the massage function.

[0123] This application provides a sealing structure that facilitates the formation of a sealed connection between two flow channels through an insertion method. This allows the sealing structure to form a sealed connection with the two flow channels, combining end face sealing and side sealing, thereby ensuring a good sealing effect. In addition, by creating side openings in the two flow channels and the sealing structure, it is beneficial for the consumables in the two flow channels to flow from the side of the sealing structure, which increases the flow area of ​​the consumables at the connection between the two flow channels, increases the flow rate of the consumables, and facilitates the transmission of consumables between the two flow channels.

[0124] The sealing structure of this application is also provided with a concave transition groove, which can increase the flow space of consumables, facilitate the flow of consumables, increase the flow rate of consumables, and reduce the load on the consumable transfer pump of personal care equipment.

[0125] The following points need to be explained:

[0126] (1) The accompanying drawings of the embodiments of this disclosure only involve the structures involved in the embodiments of this disclosure. Other structures can be referred to the general design.

[0127] (2) For clarity, the thickness of layers or regions is enlarged or reduced in the drawings used to describe embodiments of the present disclosure, i.e., these drawings are not drawn to actual scale. It will be understood that when an element such as a layer, film, region or substrate is referred to as being “above” or “below” another element, the element may be “directly” located “above” or “below” the other element or there may be intermediate elements.

[0128] (3) Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0129] It is understood that the above embodiments are merely exemplary implementations used to illustrate the principles of this utility model, and the utility model is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of this utility model, and these modifications and improvements are also considered to be within the protection scope of this utility model.

Claims

1. A sealing structure for being disposed between two flow channels to form a sealed connection between the two flow channels, characterized in that, The sealing structure has insertion slots at both ends for corresponding flow channels to be inserted, and the sealing structure also has two side openings that are respectively connected to the corresponding insertion slots and two connecting channels that are respectively connected to the two side openings. When the corresponding flow channels are inserted into the two insertion slots, the two flow channels are connected to the connecting channels through the corresponding side openings.

2. The sealing structure according to claim 1, characterized in that, The connecting channel includes a first inner sidewall and a second inner sidewall disposed opposite to each other, wherein the first inner sidewall is configured to be shorter than the second inner sidewall, thereby forming two side openings at both ends of the first inner sidewall.

3. The sealing structure according to claim 1, characterized in that, The flow channel includes multiple sub-flow channels; the sealing structure also includes a first partition portion disposed within the connection channel, the first partition portion dividing the connection channel into multiple sub-connection channels, and the opposite ends of the first partition portion are respectively provided with grooves communicating with the corresponding insertion slots.

4. The sealing structure according to claim 3, characterized in that, Each of the sub-connecting channels includes a first sub-inner sidewall and a second sub-inner sidewall disposed opposite to each other, wherein the first sub-inner sidewall is disposed on the side close to the first partition and is shorter than the second sub-inner sidewall, thereby forming two side openings at both ends of the first sub-inner sidewall.

5. The sealing structure according to any one of claims 2 to 4, characterized in that, A transition groove is provided in the connecting channel, and the transition groove is formed by a recess in at least a portion of the inner sidewall of the connecting channel in the radial direction.

6. The sealing structure according to any one of claims 1 to 4, characterized in that, The sealing structure is made of an elastic material.

7. A nursing head, characterized in that, include: Nursing end; The connecting rod connected to the nursing end; The first flow channel disposed within the connecting rod and the sealing structure according to any one of claims 1 to 6; The first flow channel is provided with a plug end that is adapted to the plug groove of the sealing structure and a first side opening for communicating with the side opening of the sealing structure.

8. The nursing head according to claim 7, characterized in that, The connecting rod includes a first part near the nursing end and a second part away from the nursing end. The first part is provided with a first flow channel, and the second part is hollow to form a receiving cavity. The sealing structure is provided in the receiving cavity. The plug-in end is provided at the connection between the first part and the second part.

9. The nursing head according to claim 8, characterized in that, The nursing head also includes a second partition disposed within the first flow channel, the second partition being used to divide the first flow channel into multiple first sub-flow channels; The plug-in end is formed by the second partition extending away from the first part, and the portion of the second partition extending out of the first part defines the first side opening.

10. The nursing head according to claim 8, characterized in that, The nursing head also includes a locking member disposed in the receiving cavity and sealed to the sealing structure. The locking member includes a main body and a slot that extends through the main body in the axial direction. The slot communicates with the insertion groove and is used for insertion of the second flow channel.

11. The nursing head according to claim 10, characterized in that, The sealing structure has a first stepped connecting portion on the inner side wall near one end of the engaging member, and the engaging member has a boss at one end near the sealing structure to form a second stepped connecting portion. The second stepped connecting portion cooperates with the first stepped connecting portion to make the engaging member and the sealing structure seal together.

12. The nursing head according to claim 10, characterized in that, The inner wall of the engaging component and the second flow channel are connected by an engaging structure that adapts to the engaging component and the slot. And / or, the outer wall of the engaging member and the inner wall of the connecting rod are connected by a structure adapted to a slide rail and a slider; And / or, the outer wall of the sealing structure near one end of the engaging member forms a sealed connection with the inner wall of the connecting rod through a structure in which a sealing ring and a sealing groove are adapted to each other.

13. A drive shaft, characterized in that, The drive shaft is provided with a second flow channel, the second flow channel is provided with a second insertion end adapted to the insertion groove of the sealing structure according to any one of claims 1 to 6, and a second side opening for communicating with the side opening of the sealing structure.

14. The drive shaft according to claim 13, characterized in that, The drive shaft also includes: A third partition is disposed within the second flow channel and is used to divide the second flow channel into multiple second sub-flow channels; The second plug-in end is formed by the third partition extending along the axial direction of the drive shaft, and the second side opening is defined by the portion of the third partition extending out of the drive shaft.

15. The drive shaft according to claim 13, characterized in that, The second insertion end of the drive shaft is provided with an end cap.

16. A personal care device, characterized in that, It includes a nursing head as described in any one of claims 7 to 12, and a drive shaft as described in any one of claims 13 to 15 for connection with said nursing head.

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