Brush handle assembly for oral care device and oral care device

Abstract

The utility model relates to a brush handle assembly for an oral cavity nursing device and the oral cavity nursing device.The brush handle assembly for the oral cavity nursing device comprises a brush handle and a connecting piece connected to one end of the brush handle, the other opposite end of the brush handle is used for being connected with a brush head, and the connecting piece comprises a soft clamping piece and a connecting piece body; a connecting hole is formed in the brush handle, and the soft clamping piece is embedded in the connecting piece body and fixedly inserted into the connecting hole. The connecting piece main body is provided with a shaft hole into which a motor shaft is inserted, and at least part of the soft clamping piece protrudes into the shaft hole and is used for abutting against the motor shaft. According to the brush handle assembly for the oral care device, through the arrangement of the soft clamping piece with the protruding buckling point, in the process that the motor shaft is inserted into the shaft hole, the soft clamping piece can be extruded and deformed to be matched with the motor shaft, the contact area is increased, the clamping reliability of the motor shaft and the brush handle is guaranteed, and the service life of the brush handle assembly is prolonged. Therefore, the reliability of the oral care device using the brush handle assembly is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of oral care devices, in particular to a brush handle assembly for an oral care device and an oral care device. Background Art

[0002] With the improvement of people's living standards and the deepening of the understanding of oral hygiene maintenance methods, more and more people use electric toothbrushes instead of traditional toothbrushes. Electric toothbrushes are divided into vibrating type and rotating type, among which the vibrating type is the mainstream product on the market, mainly achieving oral cleaning through high-frequency vibration.

[0003] A motor capable of generating high-frequency vibration is provided in the brush body. The brush handle is connected to the motor shaft to transmit vibration to the brush head. The brush handle is usually detachably connected to the motor shaft to facilitate the periodic replacement of the brush head. This detachable connection structure is an important aspect that needs to be studied and improved in detail in the field of electric toothbrushes. On the one hand, if the detachable connection structure is too tight, it is easy to have problems with inconvenient disassembly. On the other hand, if the detachable connection structure is not tight enough, it will become loose after a period of use and cannot stably transmit vibration, and the quality of this electric toothbrush will not pass.

[0004] As disclosed in patent CN114760955A, a spring is installed inside the brush handle of its brush head, and the spring is directly used to fix the motor shaft and the brush handle and transmit vibration. However, the cost of this brush head structure is actually relatively high. The structure of the spring is relatively complex, the assembly is not simple, and it is easy for the connection between the spring and the motor shaft to become loose due to the vibration of the brush head. Moreover, the vibration frequency in the electric toothbrush is quite high, which makes the reliability of the entire oral care device relatively low. Summary of the Utility Model

[0005] Based on this, in order to address at least one of the above-mentioned problems, it is necessary to provide a brush handle assembly for an oral care device and an oral care device.

[0006] In the first aspect, the present application provides a brush handle assembly for an oral care device, including a brush handle and a connector connected to one end of the brush handle. The opposite end of the brush handle is used to connect to the brush head. The connector includes a soft snap-fit member and a connector body;

[0007] The brush handle is provided with a connection hole. The soft snap-fit member is fitted into the connector body and inserted and fixed into the connection hole;

[0008] The connector body is provided with a shaft hole for inserting the motor shaft. At least part of the soft snap-fit member protrudes into the shaft hole and is used to abut against the motor shaft.

[0009] In certain implementations of the first aspect, through holes are provided on the circumferential side surface of the connecting piece body, and the soft clamping piece passes through the through holes and is used to abut against the circumferential side surface of the motor shaft.

[0010] Combined with the first aspect and the above implementation, in certain implementations of the first aspect, a first installation groove with a hollowed-out bottom is provided on the circumferential side of the connecting piece body, and the soft clamping piece is arranged in the first installation groove; the bottom end of the soft clamping piece is used to abut against the circumferential side surface of the motor shaft.

[0011] Combined with the first aspect and the above implementation, in certain implementations of the first aspect, two through holes are provided on the bottom surface of the first installation groove; the soft clamping piece is provided with two abutting protrusions, and the abutting protrusions pass through the through holes and are used to abut against the circumferential side surface of the motor shaft.

[0012] Combined with the first aspect and the above implementation, in certain implementations of the first aspect, the connecting piece body includes an integrally formed connecting portion and a base, the connecting portion extends into the connecting hole, the base is exposed outside the connecting hole, the connecting piece includes a rigid clamping piece fixedly connected to the connecting portion, and the rigid clamping piece is clamped and fixed in the connecting hole.

[0013] Combined with the first aspect and the above implementation, in certain implementations of the first aspect, the connecting portion sequentially includes an integrally formed journal, a shaft sleeve and a shaft seat; one end of the rigid clamping piece is provided with a connecting ring, the connecting ring is sleeved and fixed on the journal, the rigid clamping piece is arranged on one side of the shaft sleeve, and the soft clamping piece is arranged on the opposite side of the shaft sleeve.

[0014] Combined with the first aspect and the above implementation, in certain implementations of the first aspect, a second installation groove with a hollowed-out bottom is provided on the circumferential side of the shaft sleeve; a connecting protrusion is provided on one side of the rigid clamping piece facing the shaft hole; the rigid clamping piece is arranged in the second installation groove, and the connecting protrusion is used to abut against the motor shaft.

[0015] Combined with the first aspect and the above implementation, in certain implementations of the first aspect, a plurality of pressing protrusions are provided on the side of the rigid clamping piece facing away from the connecting protrusion, and the pressing protrusions abut against the inner wall of the connecting hole.

[0016] Combined with the first aspect and the above implementation, in certain implementations of the first aspect, the material of the rigid clamping piece is rigid plastic, and the material of the soft clamping piece is soft plastic or silica gel.

[0017] In a second aspect, the present application provides an oral care device, comprising a brush head, a handle, and a brush handle assembly for an oral care device as described in any one of the first aspects of the present application; a motor for generating vibration is provided inside the handle.

[0018] The technical solutions provided in the embodiments of the present utility model bring the following beneficial technical effects:

[0019] The brush handle assembly for an oral care device provided by the present utility model is provided with a soft snap-fit member having protruding snap points. During the process of inserting the motor shaft into the shaft hole, the soft snap-fit member can be deformed by extrusion to fit the motor shaft, increasing the contact area and ensuring the reliability of the connection between the motor shaft and the brush handle, thereby improving the reliability of the oral care device using this brush handle assembly.

[0020] The additional aspects and advantages of the present application will be given in the subsequent parts and will be understood in detail from the subsequent description, or will be learned through the specific implementation of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is an exploded view of a brush handle assembly for an oral care device in an embodiment of the present utility model;

[0022] Figure 2 is a schematic cross-sectional structure view of a brush handle assembly for an oral care device in an embodiment of the present utility model;

[0023] Figure 3 is a schematic first perspective view of a connector main body in an embodiment of the present utility model;

[0024] Figure 4 is a schematic second perspective view of a connector main body in an embodiment of the present utility model;

[0025] Figure 5 is a schematic structure view of a connector in an embodiment of the present utility model;

[0026] Figure 6 is a schematic partial structure view of an oral care device in an embodiment of the present utility model.

[0027] DESCRIPTION OF THE REFERENCE NUMERALS:

[0028] 100 - brush head, 200 - brush handle assembly;

[0029] 1000 - brush handle, 2000 - connector;

[0030] 2100 - soft snap-fit member, 2200 - connector main body, 2300 - hard snap-fit member;

[0031] 1100 - connection hole; 2201 - shaft hole, 2202 - through hole;

[0032] 2110 - abutting protrusion;

[0033] 2210 - connecting part, 2220 - base;

[0034] 2211 - journal, 2212 - bushing, 2213 - pedestal;

[0035] 2310 - connecting ring, 2320 - connecting protrusion, 2330 - pressing protrusion, 2340 - tail clip. Detailed implementation manners

[0036] For ease of understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. The possible embodiments of the present utility model are shown in the drawings. However, the present utility model can be implemented in many different forms and is not limited to the embodiments already described in the drawings herein. The embodiments described by referring to the drawings are exemplary and are used to make the understanding of the disclosure content of the present utility model more thorough and comprehensive, and should not be construed as a limitation to the present utility model. In addition, if the detailed description of the known technology is non-essential technology for the features shown of the present utility model, these technical details may be omitted.

[0037] Those skilled in the relevant art can understand that unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as the general understanding of those of ordinary skill in the field to which the present utility model belongs. It should also be understood that terms such as those defined in the general dictionary should be understood as having a meaning consistent with the meaning in the prior art and will not be interpreted with an idealized or overly formal meaning unless specifically defined as here.

[0038] Those skilled in the technical field of the present application can understand that unless specifically stated, the singular forms "a", "an", "the" and "said" used herein may also include the plural forms. It should be further understood that the term "comprising" used in the specification of the present application means the presence of the described features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or their groups. It should be understood that the phrase "and / or" used herein includes all or any unit and all combinations of one or more of the associated listed items.

[0039] The technical solution of the present utility model and how this technical solution solves the above technical problems will be described in detail below with specific embodiments.

[0040] An embodiment of the first aspect of the present application provides a brush handle assembly 200 for an oral care device, as Figure 1As shown in the figure, it includes a brush handle 1000 and a connecting member 2000 connected to one end of the brush handle 1000. The opposite end of the brush handle 1000 is used to connect to a brush head 100. The connecting member 2000 includes a soft clamping member 2100 and a connecting member main body 2200. The brush handle 1000 is provided with a connecting hole 1100. The soft clamping member 2100 is fitted into the connecting member main body 2200 and inserted and fixed in the connecting hole 1100. The connecting member main body 2200 is provided with a shaft hole 2201 for inserting a motor shaft. At least a part of the soft clamping member 2100 protrudes into the shaft hole 2201 and is used to abut against the motor shaft.

[0041] The hardness of the soft clamping member 2100 is less than 77HD. When the hardness of the material is greater than 77HD, the material can be called a hard material. When the hardness of the material is not greater than 77HD, it is called a soft material. The soft clamping member 2100 of the present application can specifically be made of plastic or silicone. The motor shaft for providing vibration can be inserted into the shaft hole 2201 of the connecting member main body 2200 to realize the connection between the motor shaft and the connecting member 2000, and thus realize the transmission of vibration from the motor to the brush handle 1000 and then to the bristles of the brush head 100. The soft clamping member 2100 is fitted into the connecting member main body 2200. Specifically, the soft clamping member 2100 can be injection-molded onto the connecting member main body 2200 to ensure that a part of the material on the soft clamping member 2100 protrudes from the inner wall of the shaft hole 2201 of the connecting member main body 2200. When the motor shaft is inserted into the shaft hole 2201, the soft clamping member 2100 is elastically deformed by extrusion and abuts against the motor shaft sufficiently, realizing a more firm connection between the two and increasing the friction between the two, preventing the motor shaft from easily disengaging from the shaft hole 2201 due to repeated high-frequency vibration.

[0042] The brush handle assembly 200 for an oral care device provided by the present utility model is provided with a soft clamping member 2100 protruding into the shaft hole 2201. During the process of inserting the motor shaft into the shaft hole 2201, the soft clamping member 2100 can be deformed by extrusion to adapt to the motor shaft, increasing the contact area, ensuring the reliability of the clamping connection between the motor shaft and the brush handle 1000, and thus improving the reliability of the oral care device using the brush handle assembly 200.

[0043] Optionally, in some implementation manners of the first aspect embodiment, through holes 2202 are provided on the circumferential side surface of the connecting member main body 2200. The soft clamping member 2100 passes through the through holes 2202 and is used to abut against the circumferential side surface of the motor shaft. By providing through holes 2202 specifically for the soft clamping member 2100 to pass through on the circumferential side surface of the connecting member main body 2200, it is ensured that the soft clamping member 2100 is accurately arranged on the connecting member main body 2200, and at the same time, it can also make the soft clamping member 2100 protrude into the shaft hole 2201 more conveniently.

[0044] Optionally, in combination with the embodiments of the first aspect and the above implementation manners, in some other implementation manners of the embodiments of the first aspect, such as Figure 2 As shown, a first mounting groove with a hollowed-out bottom is provided on the circumferential side of the connecting member main body 2200 (not shown), and the soft snap-fit member 2100 is disposed in the first mounting groove; the bottom end of the soft snap-fit member 2100 is for abutting against the circumferential side surface of the motor shaft. In order to better and more stably arrange the soft snap-fit member 2100, a recessed first mounting groove is provided on the circumferential side of the connecting member main body 2200, and the soft snap-fit member 2100 is specifically disposed in the first mounting groove, which can make the position of the soft snap-fit member 2100 on the connecting member main body 2200 more stable and avoid sliding along the circumferential side. A hollowed-out structure is provided at the bottom of the first mounting groove to ensure that the soft snap-fit member 2100 passes through and abuts against the motor shaft.

[0045] Further, in combination with the above implementation manners, in some other implementation manners of the embodiments of the first aspect, such as Figure 1 and Figure 3 As shown, at least two of the above through holes 2202 are provided on the bottom surface of the first mounting groove; the soft snap-fit member 2100 is provided with at least two abutting protrusions 2110, and the abutting protrusions 2110 pass through the through holes 2202 one by one and are for abutting against the circumferential side surface of the motor shaft. By providing at least two through holes 2202 at the bottom of the first mounting groove, at least two abutting protrusions 2110 on the soft snap-fit member 2100 are enabled to pass through the through holes 2202 and abut against the shaft side surface of the motor shaft. The setting of the through holes 2202 can enable the two abutting protrusions 2110 on the soft snap-fit member 2100 to form a "T" shape structure, which not only ensures a relatively sufficient contact area with the motor shaft but also makes the abutting connection area more dispersed. In the case of setting fewer abutting protrusions 2110, a relatively reliable abutting connection can still be obtained.

[0046] Optionally, in combination with the embodiments of the first aspect of the present application and the foregoing implementation manners, in some other embodiments of the first aspect, such as Figure 3 and Figure 4 As shown, the connecting member main body 2200 includes an integrally formed connecting portion 2210 and a base 2220. The connecting portion 2210 extends into the connecting hole 1100, and the base 2220 is exposed outside the connecting hole 1100. As Figure 1 and Figure 5As shown, the connecting member 2000 further includes a rigid clamping member 2300 fixedly connected to the connecting portion 2210, and the rigid clamping member 2300 is clamped and fixed within the connecting hole 1100. As a split structure of the connecting member main body 2200, the rigid clamping member 2300 facilitates the disassembly and assembly of the connecting member main body 2200 and the brush handle 1000. In cooperation with the soft clamping member 2100, it can also make the connection between the motor shaft, the connecting member main body 2200, and the brush handle 1000 tighter. The rigid clamping member 2300 can be made of rigid plastic, that is, plastic with a hardness greater than 77 HD.

[0047] Specifically, in combination with the embodiments of the first aspect and the above implementation manners, in some implementation manners of some other embodiments of the first aspect, such as Figure 3 and Figure 5 As shown, the connecting portion 2210 sequentially includes a journal 2211, a bushing 2212, and a pedestal 2213 that are integrally formed; one end of the rigid clamping member 2300 is provided with a connecting ring 2310, and the connecting ring 2310 is sleeved and fixed on the journal 2211. The rigid clamping member 2300 is disposed on one side of the bushing 2212, and the soft clamping member 2100 is disposed on the opposite side of the bushing 2212. The provision of the connecting ring 2310 on the rigid clamping member 2300 enables more convenient pre-assembly of the rigid clamping member 2300 and the connecting portion 2210, thereby making it easier to insert the connecting portion 2210 into the pre-connection hole 1100.

[0048] In addition, in combination with the first aspect and the above implementation manners, in some other implementation manners of some other embodiments of the first aspect, such as Figure 2 As shown, a second installation groove (not shown) with a hollowed-out bottom is provided on the circumferential side of the bushing 2212; a connecting protrusion 2320 is provided on one side of the rigid clamping member 2300 facing the shaft hole 2201; the rigid clamping member 2300 is disposed in the second installation groove, and the connecting protrusion 2320 is used to abut against the motor shaft. The provision of the second installation groove is to better realize the connection between the rigid clamping member 2300 and the connecting portion 2210. By disposing the rigid clamping member 2300 in the recessed second installation groove, the position of the rigid clamping member 2300 is more stable. Among them, the connecting protrusion 2320 protrudes from the hollow structure at the bottom of the groove and abuts against the motor shaft, which further makes the connection between the motor shaft and the connecting member 2000 tighter.

[0049] Furthermore, in combination with the embodiments of the first aspect and the above implementation manners, in some other implementation manners of the first aspect, such as Figure 1 and Figure 5As shown, a plurality of pressing protrusions 2330 are provided on the side of the hard clip 2300 facing away from the connecting protrusion 2320. The pressing protrusions 2330 abut against the inner wall of the connecting hole 1100. The pressing protrusions 2330 achieve a tight connection between the hard clip 2300 and the connecting hole 1100, rather than requiring the entire hard clip 2300 to abut against the wall of the connecting hole 1100. This ensures that the hard clip 2300 and the wall of the connecting hole 1100 have a clear abutting connection point, facilitating the assembly of the connector 2000 with the brush handle 1000 and ensuring that the hard clip 2300 is securely connected within the connecting hole 1100. In addition, in order to stabilize the structure of the hard clip 2300, a raised tail clip 2340 can be set at the tail of the hard clip 2300, that is, at one end relative to the connecting ring 2310, and a corresponding slot can be set on the connecting part body 2200 so that the tail clip 2340 can be inserted into the slot to prevent the hard clip 2300 from rotating around the outer wall of the connecting part 2210 under high-frequency vibration.

[0050] Based on the same technical concept, the embodiment of the second aspect of the present application provides an oral care device, such as Figure 6 As shown, it includes a brush head 100, a handle and a brush handle assembly 200 for an oral care device as described in any one of the first aspects of the present application; a motor for generating vibration is provided in the handle.

[0051] The oral care device provided by the utility model has a brush handle assembly with a soft clip having a protruding buckle point. When the motor shaft is inserted into the shaft hole, the soft clip can be squeezed and deformed to adapt to the motor shaft, thereby increasing the contact area and ensuring the reliability of the clip connection between the motor shaft and the brush handle, thereby improving the reliability of the oral care device using the brush handle assembly.

[0052] Those skilled in the art will understand that the terms "first" and "second" discussed in this application are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, unless otherwise specified, "plurality" means two or more.

[0053] In the description of the present application, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0054] In the description of this specification, the specific features, structures, materials, or characteristics may be combined in a suitable manner in any one or more embodiments or examples.

[0055] The above are only some implementation manners of the present application. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present application, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present application.

Claims

1. A brush handle assembly for an oral care device, characterized in that, It includes a brush handle and a connecting member connected to one end of the brush handle. The opposite end of the brush handle is used to connect a brush head. The connecting member includes a soft snap-fit member and a connecting member body; The brush handle is provided with a connecting hole. The soft snap-fit member is fitted into the connecting member body and inserted and fixed in the connecting hole; The connecting member body is provided with a shaft hole for inserting a motor shaft. At least part of the soft snap-fit member protrudes into the shaft hole and is used to abut against the motor shaft.

2. The brush handle assembly for an oral care device according to claim 1, wherein, A through hole is provided on the circumferential side surface of the connecting member body. The soft snap-fit member passes through the through hole and is used to abut against the circumferential side surface of the motor shaft.

3. The brush handle assembly for an oral care device according to claim 1, characterized in that, A first mounting groove with a hollowed-out bottom is provided on the circumferential side of the connecting member body. The soft snap-fit member is arranged in the first mounting groove; the bottom end of the soft snap-fit member is used to abut against the circumferential side surface of the motor shaft.

4. The brush handle assembly for an oral care device according to claim 3, characterized in that, Two through holes are provided on the bottom surface of the first mounting groove; the soft snap-fit member is provided with two abutting protrusions, and the abutting protrusions pass through the through holes and are used to abut against the circumferential side surface of the motor shaft.

5. The brush handle assembly for an oral care device according to claim 1, characterized in that, The connecting member body includes an integrally formed connecting portion and a base. The connecting portion extends into the connecting hole, and the base is exposed outside the connecting hole. The connecting member includes a rigid snap-fit member fixedly connected to the connecting portion, and the rigid snap-fit member is snap-fitted and fixed in the connecting hole.

6. The brush handle assembly for an oral care device according to claim 5, characterized in that, The connecting portion successively includes an integrally formed journal, a shaft sleeve, and a shaft seat; one end of the rigid snap-fit member is provided with a connecting ring, and the connecting ring is sleeved and fixed on the journal. The rigid snap-fit member is arranged on one side of the shaft sleeve, and the soft snap-fit member is arranged on the opposite side of the shaft sleeve.

7. The brush handle assembly for an oral care device according to claim 6, wherein, A second mounting groove with a hollowed-out bottom is provided on the circumferential side of the shaft sleeve; a connecting protrusion is provided on one side of the rigid snap-fit member facing the shaft hole; the rigid snap-fit member is arranged in the second mounting groove, and the connecting protrusion is used to abut against the motor shaft.

8. The brush handle assembly for an oral care device according to claim 7, wherein, A plurality of pressing protrusions are provided on the side of the rigid snap-fit member facing away from the connecting protrusion, and the pressing protrusions abut against the inner wall of the connecting hole.

9. The brush handle assembly for an oral care device according to claim 5, wherein, The material of the rigid snap-fit member is rigid plastic, and the material of the soft snap-fit member is soft plastic or silicone.

10. An oral care device, characterized in that, It includes a brush head, a handle, and a brush handle assembly for an oral care device according to any one of claims 1 to 9; a motor for generating vibration is arranged in the handle.

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