Charging base and electric toothbrush

Abstract

The application relates to the technical field of electric toothbrushes, and discloses a charging base and an electric toothbrush. The charging base comprises a charging connector and a base body. The charging connector has an axial direction and has a first end and a second end in the axial direction. The first end is used for connecting internal lines, and the second end is used for connecting a charger. The charging connector further comprises a first limiting ring. The first limiting ring is located between the first end and the second end in the axial direction and is protruded on the surface of the charging connector. The base body is integrally formed with the charging connector and comprises a first mounting hole suitable for accommodating the charging connector and an abutting portion located at one end of the first mounting hole. The abutting portion abuts against one side of the first limiting ring which faces the second end. The application improves the tensile capacity of the charging connector, reduces the risk of loosening of the charging connector after long-term use, and further improves the waterproof sealing effect of the charging connector.

Description

Technical Field

[0001] This application relates to the field of electric toothbrush technology, specifically to a charging base and an electric toothbrush. Background Technology

[0002] Electric toothbrushes can be charged in two ways: non-contact charging based on induction coils and contact charging based on charging interfaces. To prevent moisture from entering the interior, contact-charging electric toothbrushes require a waterproof seal around the charging interface.

[0003] However, the charging interface in the relevant technology has poor waterproof performance. After long-term plugging and unplugging, the charging interface is prone to loosening, which creates gaps around it. Moisture can then seep into the electric toothbrush through these gaps, reducing the product's lifespan. Summary of the Invention

[0004] This application provides a charging base and an electric toothbrush to solve the problem of poor waterproof performance of the charging interface.

[0005] In a first aspect, this application provides a charging base, including a charging connector and a base body. The charging connector has an axial direction and has a first end and a second end in the axial direction. The first end is used to connect internal circuitry, and the second end is used to connect a charger. The charging connector also includes a first limiting ring, which is located between the first end and the second end in the axial direction and protrudes from the surface of the charging connector. The base body is integrally formed with the charging connector and includes a first mounting hole adapted to accommodate the charging connector and an abutting portion located at one end of the first mounting hole. The abutting portion abuts against the side of the first limiting ring facing the second end.

[0006] Beneficial effects: On the one hand, the charging connector and the base are integrated in one piece, which allows the charging connector to make tight contact with the inner wall of the first mounting hole, improving the waterproof sealing effect of the charging connector. On the other hand, the abutting part and the first limiting ring abut against each other. During the insertion and removal process, the force along the axial direction of the charging connector can be applied to the abutting part through the first limiting ring, thereby improving the tensile strength of the charging connector, reducing the risk of the charging connector loosening after long-term use, and further improving the waterproof sealing effect of the charging connector.

[0007] In one optional embodiment, the charging connector further includes a first limiting groove located on the side of the first limiting ring near the second end, the first limiting groove being recessed on the surface of the charging connector and surrounding the charging connector circumferentially; the seat further includes a second limiting ring protruding from the inner wall of the first mounting hole and adapted to be embedded in the first limiting groove.

[0008] In one optional embodiment, the charging connector further includes a third limiting ring located on the side of the first limiting ring near the second end and protruding from the surface of the charging connector; the charging base further includes a metal shell, the charging connector being inserted into the metal shell so that the metal shell surrounds the second end, and the third limiting ring is adapted to abut against the metal shell.

[0009] In one optional embodiment, the charging connector further includes a connecting groove and a buckle. The connecting groove is recessed on the surface of the third limiting ring and extends through the third limiting ring on the side near the second end. The buckle protrudes from the connecting groove. The metal shell includes an ear portion that is embedded in the connecting groove and has a locking slot. The buckle and the locking slot are engaged.

[0010] In one optional embodiment, the charging connector further includes a second limiting groove recessed on the surface of the third limiting ring and communicating with the connecting groove in the circumferential direction of the charging connector. The base also includes a first limiting block adapted to be embedded in the second limiting groove.

[0011] In one alternative embodiment, the base further includes a second limiting block adapted to be embedded in the bayonet slot, the width D of the bayonet slot being greater than the width d of the buckle.

[0012] In one optional embodiment, the base further includes a fourth limiting ring located at the end of the first mounting hole away from the abutment portion. The fourth limiting ring protrudes from the inner wall of the first mounting hole and is adapted to abut against the end of the metal shell away from the third limiting ring.

[0013] In one alternative embodiment, the seat further includes a recess that communicates with the end of the first mounting hole away from the abutment portion, and is adapted to place a sealing plug.

[0014] In one alternative embodiment, the seat further includes a second mounting hole that extends through the seat in the axial direction and communicates with the recess, the second mounting hole being adapted to accommodate the connecting rod of the sealing plug.

[0015] Secondly, this application also provides an electric toothbrush, including the charging base provided in this application.

[0016] Beneficial effects: The electric toothbrush includes the electric base provided in this application, and therefore has the corresponding beneficial effects brought about by the electric base, which will not be elaborated here. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a charging dock according to an embodiment of this application; Figure 2 for Figure 1 A cross-sectional view of the charging dock shown. Figure 3 for Figure 1 The diagram shows the exploded structure of the charging dock. Figure 4 for Figure 3 A magnified view of a portion of region A in the middle; Figure 5 for Figure 1 A schematic diagram of the charging connector of the charging dock shown; Figure 6 for Figure 5 The diagram shows the exploded structure of the charging connector.

[0019] Explanation of reference numerals in the attached figures: 1. Charging connector; 101. First end; 102. Second end; 103. First limiting ring; 104. First limiting groove; 105. Third limiting ring; 106. Connecting groove; 107. Buckle; 108. Second limiting groove; 2. Base; 201. First mounting hole; 202. Abutting part; 203. Second limiting ring; 204. Fourth limiting ring; 205. Recessed groove; 206. Second mounting hole; 207. First limiting block; 208. Second limiting block; 3. Metal shell; 301. Ear; 302. Bayonet; X, Axial direction. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "a," "an," and "comprising" as used herein may also mean including the plural forms. The terms "comprising," "including," and "having" are inclusive and therefore indicate the presence of the stated features, elements, and / or components, but do not exclude the presence or addition of one or more other features, elements, components, and / or combinations thereof.

[0022] Although terms such as "first," "second," etc., may be used in this document to describe multiple elements, components, regions, layers, and / or sections, these elements, components, regions, layers, and / or sections should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or section from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Furthermore, in the description of this application, unless otherwise expressly specified and limited, the terms "set up" and "connected" should be interpreted broadly; for example, they may refer to a fixed connection, a detachable connection, or an integral connection; they may refer to a direct connection or an indirect connection via an intermediate medium. Those skilled in the art will understand the specific meaning of the above terms in this application based on the specific circumstances.

[0023] Electric toothbrushes that use contact charging connect to the charger via a charging connector (such as a Type-C connector or a USB connector). During repeated plugging and unplugging, the charging connector may become loose, leading to a decrease in waterproof performance. Moisture can easily seep into the electric toothbrush from the gaps around the charging connector, causing the electric toothbrush to malfunction.

[0024] The following is combined with Figures 1 to 6 This describes an embodiment of the present application.

[0025] Reference Figure 1 , Figure 2 , Figure 3 According to an embodiment of this application, a charging base is provided, including a charging connector 1 and a base 2. The charging connector 1 has an axial direction X and has a first end 101 and a second end 102 in the axial direction X. The first end 101 is used to connect internal circuitry, and the second end 102 is used to connect a charger. The charging connector 1 also includes a first limiting ring 103, which is located between the first end 101 and the second end 102 in the axial direction X and protrudes from the surface of the charging connector 1. The base 2 is integrally formed with the charging connector 1 and includes a first mounting hole 201 adapted to accommodate the charging connector 1 and an abutment portion 202 located at one end of the first mounting hole 201. The abutment portion 202 abuts against the side of the first limiting ring 103 facing the second end 102.

[0026] On the one hand, the charging connector 1 and the base 2 are integrated in one piece, which allows the charging connector 1 to be in close contact with the inner wall of the first mounting hole 201, thereby improving the waterproof sealing effect of the charging connector 1.

[0027] On the other hand, the abutting part 202 and the first limiting ring 103 abut together. During the insertion and removal process, the force along the axial direction X that the charging connector 1 is subjected to can be applied to the abutting part 202 through the first limiting ring 103. The abutting part 202 bears the force, thereby reducing the static friction force along the axial direction X between the charging connector 1 and the inner wall of the first mounting hole 201, improving the tensile strength of the charging connector 1, reducing the risk of the charging connector 1 loosening after long-term use, and further improving the stability and reliability of the waterproof sealing design of the charging connector 1.

[0028] It is understood that the charging dock is suitable for use in various electrical devices that employ contact charging, especially those used in humid environments (such as bathrooms), such as electric toothbrushes, water flossers, etc., and this application does not impose any limitations on this. Figure 1 , Figure 2 , Figure 3 In the illustrated embodiment, the charging connector 1 is a Type-C connector. In other embodiments not shown, the charging connector 1 may also be other specifications (such as a USB connector), and this application does not limit this.

[0029] Optionally, in conjunction with reference Figure 4 and Figure 5 The charging connector 1 may also include a first limiting groove 104, which is located on the side of the first limiting ring 103 near the second end 102. The first limiting groove 104 is recessed on the surface of the charging connector 1 and surrounds the charging connector 1 in the circumferential direction. The seat 2 also includes a second limiting ring 203, which protrudes from the inner wall of the first mounting hole 201 and is suitable for being embedded in the first limiting groove 104.

[0030] The two ends of the second limiting ring 203 along the axial direction X respectively abut against the two ends of the first limiting groove 104, so that it can not only withstand the pulling force from the charging connector 1 (that is, the force generated when the charger is pulled out of the charging connector 1, the force in the direction from the first end 101 to the second end 102) but also the pressure from the charging connector 1 (that is, the force generated when the charger is inserted into the charging connector 1, the force in the direction from the second end 102 to the first end 101), further improving the tensile and compressive strength of the charging connector 1, reducing the magnitude of the friction force generated during the insertion and removal process, and making the charging connector 1 less prone to loosening.

[0031] Furthermore, since the first limiting groove 104 surrounds the charging connector 1 around the entire circumference, the contact surface between the second limiting ring 203 and the first limiting groove 104, perpendicular to the axial direction X, can also enhance the sealing effect, preventing water vapor from passing through the second limiting ring 203 to reach the first end 101, thereby further improving the waterproof sealing effect of the charging connector 1.

[0032] Optionally, refer to Figure 5 and Figure 6 The charging connector 1 also includes a third limiting ring 105, which is located on the side of the first limiting ring 103 near the second end 102 and protrudes from the surface of the charging connector 1; the charging base also includes a metal shell 3, in which the charging connector 1 is inserted so that the metal shell 3 surrounds the second end 102, and the third limiting ring 105 is adapted to abut against the metal shell 3.

[0033] Understandably, the base 2 is generally molded as a single piece with the charging connector 1 using injection molding. Therefore, the base 2 is made of plastic, which has poor wear resistance and is prone to wear after long-term use. This can cause the connection between the charging connector 1 and the charger to become loose, which not only affects the charging experience but also increases the risk of gaps forming between the charging connector 1 and the base 2.

[0034] By setting a metal shell 3 that is not easily deformed or worn, the charger connector is inserted into the metal shell 3 and the second end 102 is connected, which can improve the user experience after long-term use of the charging base. When it is molded in one piece, the metal shell 3 and the inner wall of the first mounting hole 201 are in close contact, which can also improve the waterproof sealing effect of the charging base.

[0035] The metal shell 3 can be made of stainless steel, thereby improving the strength and weather resistance of the metal shell 3. Other metal materials that meet the requirements of the use environment (such as aluminum, titanium, gold, etc.) can also be selected for the metal shell 3. This application does not limit this.

[0036] Alternatively, the charging connector 1 may not be equipped with the metal casing 3, and this application does not impose any restrictions on this.

[0037] Optionally, the charging connector 1 also includes a connecting groove 106 and a buckle 107. The connecting groove 106 is recessed on the surface of the third limiting ring 105 and passes through the third limiting ring 105 on the side near the second end 102. The buckle 107 protrudes from the connecting groove 106. The metal shell 3 includes an ear portion 301, which is embedded in the connecting groove 106 and has a latch 302. The buckle 107 and the latch 302 are fastened together.

[0038] During assembly, the charging connector 1 is first inserted into the metal shell 3, so that the buckle 107 and the bayonet 302 are engaged, positioning the metal shell 3. Then the charging connector 1 and the metal shell 3 are placed into the mold together, and the base 2 is formed by injection molding, further fixing the metal shell 3.

[0039] By setting the buckle 107 and the bayonet 302, the metal shell 3 can be assembled with the charging connector 1 efficiently and accurately by snapping together. At this time, the metal shell 3 and the charging connector 1 can adopt a clearance fit or a transition fit, thereby simplifying the assembly process of the charging base.

[0040] Furthermore, the charging connector 1 may also include a second limiting groove 108, which is recessed on the surface of the third limiting ring 105 and is connected to the connecting groove 106 in the circumferential direction of the charging connector 1. The base body 2 also includes a first limiting block 207, which is adapted to be embedded in the second limiting groove 108.

[0041] The first limiting block 207 abuts against the two ends of the second limiting groove 108 along the axial direction X, which helps to further improve the tensile and compressive strength of the charging connector 1, reduce the friction force generated during insertion and removal, and make the charging connector 1 less prone to loosening. In addition, the second limiting groove 108 also facilitates the disassembly of the metal shell 3.

[0042] Optionally, refer to Figure 5 The base 2 also includes a second limiting block 208, which is adapted to be embedded in the bayonet 302. The width D of the bayonet 302 is greater than the width d of the buckle 107.

[0043] Understandably, during the one-piece molding process, the base fills the remaining space between the bayonet 302 and the buckle 107, forming the second limiting block 208, thereby further securing the metal shell 3, improving its ability to withstand tension and pressure, and preventing it from loosening. By making D greater than d, the volume of the second limiting block 208 is increased, reducing the risk of defects such as shrinkage and porosity, and ensuring that the second limiting block 208 can reliably support and fix the metal shell 3.

[0044] In addition, the second limiting block 208 can further improve the tensile and compressive strength of the charging connector 1, reduce the amount of friction generated during insertion and removal, and make the charging connector 1 less prone to loosening.

[0045] Optionally, refer to Figure 2The base 2 also includes a fourth limiting ring 204, which is located at the end of the first mounting hole 201 away from the abutment portion 202. The fourth limiting ring 204 protrudes from the inner wall of the first mounting hole 201 and is adapted to abut against the end of the metal shell 3 away from the third limiting ring 105.

[0046] The fourth limiting ring 204 abuts against the metal shell 3 from one side, and the second limiting ring 203 abuts against the charging connector 1 from the opposite side of the fourth limiting ring 204. This allows for accurate positioning of the relative positions of the metal shell 3 and the charging connector 1, improving the stability of the metal shell 3. Furthermore, since the fourth limiting ring 204 surrounds the metal shell 3 around its entire circumference, the contact surface between the fourth limiting ring 204 and the metal shell 3, perpendicular to the axial direction X, also enhances the sealing effect, preventing moisture from passing through the fourth limiting ring 204 and entering the gap between the metal shell 3 and the inner wall of the first mounting hole 201, further improving the waterproof sealing effect of the metal shell 3.

[0047] Optionally, the base 2 also includes a recess 205, which communicates with the end of the first mounting hole 201 away from the contact portion 202, and is suitable for placing a sealing plug. When charging is not required, the sealing plug is placed in the recess 205, thereby sealing the first mounting hole 201 and blocking the charging connector 1, which helps to further improve the waterproof performance of the charging base.

[0048] Optionally, the base 2 also includes a second mounting hole 206, which extends through the base 2 in the axial direction X and connects to the recess 205. The second mounting hole 206 is adapted to house the connecting rod of the sealing plug. The sealing plug can be connected to the base 2 via the connecting rod, thereby preventing it from falling or being lost and improving the user experience of the charging base.

[0049] According to an embodiment of this application, in a second aspect, an electric toothbrush is also provided, including the charging base provided in this application.

[0050] The electric toothbrush includes the electric base provided in this application, and therefore has the beneficial effects brought by the electric base, which will not be elaborated here.

[0051] Although embodiments of this application have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of this application, and all such modifications and variations fall within the scope defined by the appended claims.

Claims

1. A charging dock, characterized in that, include: A charging connector (1) has an axial direction (X) and a first end (101) and a second end (102) in the axial direction (X). The first end (101) is used to connect internal circuitry, and the second end (102) is used to connect a charger. The charging connector (1) also includes a first limiting ring (103), which is located between the first end (101) and the second end (102) in the axial direction (X) and protrudes from the surface of the charging connector (1). The base (2) is integrally formed with the charging connector (1) and includes a first mounting hole (201) adapted to accommodate the charging connector (1) and an abutment portion (202) located at one end of the first mounting hole (201), the abutment portion (202) abutting against the side of the first limiting ring (103) facing the second end (102).

2. The charging dock according to claim 1, characterized in that, The charging connector (1) further includes a first limiting groove (104), which is located on the side of the first limiting ring (103) near the second end (102). The first limiting groove (104) is recessed on the surface of the charging connector (1) and surrounds the charging connector (1) in the circumferential direction. The seat (2) also includes a second limiting ring (203), which protrudes from the inner wall of the first mounting hole (201) and is adapted to be embedded in the first limiting groove (104).

3. The charging dock according to claim 1, characterized in that, The charging connector (1) also includes a third limiting ring (105), which is located on the side of the first limiting ring (103) near the second end (102) and protrudes from the surface of the charging connector (1). The charging base also includes a metal shell (3), the charging connector (1) is inserted into the metal shell (3) so that the metal shell (3) surrounds the second end (102), and the third limiting ring (105) is adapted to abut against the metal shell (3).

4. The charging dock according to claim 3, characterized in that, The charging connector (1) also includes a connecting groove (106) and a buckle (107). The connecting groove (106) is recessed on the surface of the third limiting ring (105) and extends through the third limiting ring (105) on the side near the second end (102). The buckle (107) protrudes from the connecting groove (106). The metal shell (3) includes an ear (301) which is embedded in the connecting groove (106) and has a snap-fit ​​(302) which is engaged with the buckle (107).

5. The charging dock according to claim 4, characterized in that, The charging connector (1) further includes a second limiting groove (108), which is recessed on the surface of the third limiting ring (105) and communicates with the connecting groove (106) in the circumferential direction of the charging connector (1). The seat (2) further includes a first limiting block (207), which is adapted to be embedded in the second limiting groove (108).

6. The charging dock according to claim 4, characterized in that, The seat (2) further includes a second limiting block (208), which is adapted to be embedded in the slot (302), and the width D of the slot (302) is greater than the width d of the buckle (107).

7. The charging dock according to claim 3, characterized in that, The seat (2) further includes a fourth limiting ring (204), which is located at the end of the first mounting hole (201) away from the abutment (202). The fourth limiting ring (204) protrudes from the inner wall of the first mounting hole (201) and is adapted to abut against the end of the metal shell (3) away from the third limiting ring (105).

8. The charging dock according to claim 1, characterized in that, The seat (2) also includes a recess (205) which is connected to the end of the first mounting hole (201) away from the abutment (202) and is suitable for placing a sealing plug.

9. The charging dock according to claim 8, characterized in that, The seat (2) further includes a second mounting hole (206), which penetrates the seat (2) in the axial direction (X) and connects to the recess (205). The second mounting hole (206) is adapted to provide the connecting rod of the sealing plug.

10. An electric toothbrush, characterized in that, The charging base includes any one of claims 1 to 9.

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