Toothbrush handle and electric toothbrush

Abstract

Disclosed in the embodiments of the present application are a toothbrush handle and an electric toothbrush. The toothbrush handle comprises a brush handle housing, an elastic sealing assembly, and a device core arranged in the brush handle housing. The device core comprises a motor support, a battery support and a motor. The elastic sealing assembly is sleeved on the circumference of a motor shaft and is sealingly clamped between the inner wall face of an extension hole and the motor shaft. The battery support comprises a support body and an elastic vibration-reducing portion connected to the upper end of the support body, the support body being provided with a battery compartment, the elastic vibration-reducing portion being provided with a motor mounting cavity having an upward opening, and the support body being fixedly connected to the brush handle housing. The upper end of the motor support abuts against the elastic sealing assembly upwards, and is in limiting fit with the elastic sealing assembly in the radial direction of the motor shaft. The motor support is provided with an upper end wall, the upper end of the motor body being fixedly connected to the upper end wall of the motor support, and the lower end of the motor body being embedded in the motor mounting cavity. The toothbrush handle of the present utility model has a good vibration-reducing effect.

Description

Toothbrush handles and electric toothbrushes Technical Field

[0001] The present application relates to the technical field of oral care appliances, and in particular to a toothbrush handle and an electric toothbrush. Background Art

[0002] Electric toothbrushes achieve efficient oral cleaning through high-frequency vibrations in the brush head. To enhance the user experience, current products are dedicated to reducing the vibration felt in the electric toothbrush handle. This vibration primarily originates from the motor. Current products typically have both the upper and lower ends of the motor abut against the inner wall of the handle housing through rubber sleeves. While this provides a certain degree of vibration reduction, long-term use can lead to the direct transfer of heat from the motor to the rubber sleeve, causing it to age.

[0003] In related art, the upper end of the motor, the upper end wall of the rigid motor bracket, and the brush handle housing are connected by screws, with the outer peripheral wall of the rigid motor bracket spaced from the inner wall of the brush handle housing to achieve vibration reduction. However, since the vibration of the motor can still be directly transmitted to the brush handle housing through the screws, the overall vibration reduction effect is poor.

[0004] The above content is only used to assist in understanding the technical solution of the utility model and does not constitute an admission that the above content is prior art.

[0005] Utility Model Content

[0006] In view of the above problems, the present invention proposes a toothbrush handle, aiming to solve the technical problem of poor shock absorption effect of the toothbrush handle.

[0007] To achieve the above-mentioned purpose, the toothbrush handle proposed by the present invention includes a handle shell, an elastic sealing assembly and a movement arranged in the handle shell, the upper end surface of the handle shell is provided with an extension hole connected to its inner cavity; the movement includes a motor bracket, a battery bracket and a motor, the motor includes a motor body and a motor shaft connected to each other, and the motor shaft extends out of the handle shell through the extension hole; the elastic sealing assembly is sleeved on the outer periphery of the motor shaft, and the sealing clamp is arranged between the inner wall surface of the extension hole and the motor shaft; wherein,

[0008] The battery holder includes a holder body and an elastic shock-absorbing portion connected to the upper end of the holder body, the holder body is provided with a battery compartment, the elastic shock-absorbing portion is formed with an upwardly open motor mounting cavity, and the holder body is fixedly connected to the brush handle housing;

[0009] The upper end of the motor bracket abuts against the elastic sealing component upward and is limitedly matched with the elastic sealing component in the radial direction of the motor shaft; the motor bracket has an upper end wall, the upper end of the motor body is fixedly connected to the upper end wall of the motor bracket, and the lower end of the motor body is embedded in the motor mounting cavity; wherein,

[0010] The elastic shock absorbing portion and the motor bracket are spaced apart in the up-down direction, and the motor bracket and the peripheral wall of the motor body around the motor shaft are spaced apart from the inner wall surface of the brush handle housing.

[0011] In one embodiment, a limiting boss is provided on the top surface of the upper end wall of the motor bracket, the elastic sealing assembly has a cylindrical portion surrounding the periphery of the motor shaft, and the limiting boss is fixedly embedded in the cylindrical portion; the inner wall surface of the brush handle shell is provided with a surrounding wall adapted to be fitted around the periphery of the cylindrical portion; the peripheral wall of the cylindrical portion is clamped between the peripheral wall of the limiting boss and the surrounding wall, and the upper end wall of the cylindrical portion is clamped between the upper end surface of the limiting boss and the inner wall surface of the brush handle shell.

[0012] In one embodiment, the inner circumferential wall of the cylindrical portion and the outer circumferential surface of the limiting boss are interference fit or glued together.

[0013] In one embodiment, the inner wall surface of the cylindrical portion is partially convex to form a mounting lug; the outer circumferential surface of the limiting boss is provided with a positioning lug corresponding to the mounting lug, and the mounting lug is adapted to be fitted around the periphery of the positioning lug.

[0014] In one embodiment, the cylindrical portion is provided with at least two mounting lugs spaced apart in its circumferential direction, and the opposite side walls of the mounting lugs are provided with friction ridges extending in the up-down direction and abutting against the surrounding wall; the mounting lugs are spaced apart from the surrounding wall on the side walls in the radial direction of the motor shaft.

[0015] In one embodiment, the motor bracket also includes a sleeve portion extending downward from the outer periphery of its upper end wall, the sleeve portion is sleeved on the outer periphery of the motor body, the sleeve portion includes a hard sleeve and an elastic lining provided on the inner side of the hard sleeve, the inner peripheral wall of the hard sleeve is spaced apart from the inner wall surface of the brush handle shell, and the elastic lining is elastically abutted against the outer peripheral surface of the motor body.

[0016] In one embodiment, the elastic shock-absorbing portion includes a mounting tube and an elastic guide strip extending downward from the mounting tube, the mounting tube is fixedly connected to the upper end of the bracket body, the mounting tube encloses the motor mounting cavity, and the elastic guide strip is clamped between the outer peripheral wall of the bracket body and the inner wall surface of the brush handle shell.

[0017] In one embodiment, the movement also includes a thickened end plate and a fixing member, the thickened end plate is fixedly connected to the upper end surface of the motor body, and is clamped between the upper end wall of the motor bracket and the upper end surface of the motor body, and the fixing member passes through the upper end wall of the motor bracket and is connected to the thickened end portion to fix the motor body and the motor bracket.

[0018] In one embodiment, the battery compartment has interconnected openings on one radial side and a lower end of the motor shaft; the movement also includes a battery, and the battery is fixedly installed in the battery compartment via the opening, and a buffer is provided between the lower end of the battery and the side wall of the battery exposed through the opening and the brush handle shell; the lower end of the bracket body is detachably fixedly connected to the brush handle shell.

[0019] In one embodiment, the toothbrush handle further includes a control panel, which is electrically connected to the motor and the battery. The control panel extends in an up-down direction, and the upper end of the control panel is fixedly connected to the motor bracket, and the lower end of the control panel is fixedly connected to the bracket body.

[0020] In one embodiment, the control plate is spaced apart from the outer wall of the elastic shock-absorbing portion.

[0021] The present invention further provides an electric toothbrush, comprising a brush head assembly and a toothbrush handle as described in any of the above embodiments, wherein the brush head assembly is connected to one end of the motor shaft extending out of the brush handle housing.

[0022] The toothbrush handle of the present invention is configured such that the upper end of the motor body is fixedly connected to the upper end wall of the motor bracket, and the lower end of the motor body is embedded in the elastic buffer portion of the battery bracket; the motor bracket and the peripheral wall of the motor body around the motor shaft are spaced apart from the inner wall surface of the brush handle housing, and the upper end of the motor bracket upwardly abuts the elastic sealing component, and the motor bracket is limitedly engaged with the elastic sealing component in the radial direction of the motor shaft. In this way, the upper end of the entire movement is only in contact with the brush handle housing in the axial and radial directions of the motor shaft through the elastic sealing component. The motor bracket is suspended relative to the brush handle housing in the axial and radial directions of the motor shaft and is not in direct contact with or connected to the brush handle housing. Therefore, the vibration transmitted to the motor bracket by the motor can be absorbed by the elastic sealing component, effectively preventing the vibration of the motor body from being transmitted to the brush handle housing through rigid fixings such as screws, which can further reduce the vibration of the entire brush handle housing. At the same time, the upper end of the motor body fully utilizes the elastic sealing component of the motor shaft to elastically limit the abutment with the brush handle housing, eliminating the need for additional elastic buffering structures, thereby reducing the number of parts and reducing the difficulty of assembly. In addition, by arranging the elastic shock-absorbing part of the battery bracket and the motor bracket in the upper and lower directions, it is easier to assemble the motor than the structure in which the battery bracket and the motor bracket are integrated, and the battery bracket and the motor bracket can be designed differently, reducing the processing difficulty. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0024] FIG1 shows a schematic structural diagram of an embodiment of a toothbrush handle of the present invention;

[0025] FIG2 is a cross-sectional view of the toothbrush handle in FIG1 at an angle;

[0026] FIG3 is a partial enlarged view of point A in FIG2 ;

[0027] FIG4 is a cross-sectional view of the toothbrush handle in FIG1 from another angle;

[0028] Figure 5 is a schematic diagram of the assembly structure of the movement and control board of the utility model;

[0029] FIG6 is a schematic diagram of the structure in FIG5 from another angle;

[0030] FIG7 is a cross-sectional view of the structure in FIG6 at an angle;

[0031] FIG8 is a schematic diagram of the assembly of the elastic sealing assembly and the motor bracket according to an embodiment of the present invention;

[0032] FIG9 is a schematic diagram of the exploded structure of the elastic sealing assembly and the motor bracket in FIG8;

[0033] FIG10 is a cross-sectional view of the structure in FIG8 at an angle;

[0034] FIG11 is a schematic diagram of the assembly of a battery holder, a battery, and a buffer member according to an embodiment of the present invention;

[0035] FIG12 is a schematic diagram of the exploded structure of the structure in FIG11;

[0036] FIG13 is a schematic structural diagram of an embodiment of a brush handle housing of the present invention;

[0037] FIG14 is a schematic structural diagram of an embodiment of an electric toothbrush according to the present invention.

[0038] Description of Figure Numbers:

[0039] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0041] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0042] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features specified as "first" or "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text is to include three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that meet both A and B.

[0043] The utility model provides a toothbrush handle.

[0044] In an embodiment of the present invention, please refer to Figures 1 to 6. The toothbrush handle 100 includes a handle shell 110, an elastic sealing assembly 120 and a movement 130 arranged in the handle shell 110. The upper end surface of the handle shell 110 is provided with an extension hole 111 connected to its inner cavity; the movement 130 includes a motor bracket 131, a battery 170 bracket 140 and a motor 150. The motor 150 includes a connected motor body 151 and a motor shaft 152. The motor shaft 152 extends out of the handle shell 110 through the extension hole 111; the elastic sealing assembly 120 is sleeved on the outer periphery of the motor shaft 152, and a sealing clamp is arranged between the inner wall surface of the extension hole 111 and the motor shaft 152.

[0045] The battery 170 bracket 140 includes a bracket body 141 and an elastic shock-absorbing portion 144 connected to the upper end of the bracket body 141. A battery compartment 142 is provided on the bracket body 141, and a motor mounting cavity 145 with an upward opening 143 is formed on the elastic shock-absorbing portion 144. The bracket body 141 is fixedly connected to the brush handle housing 110.

[0046] The upper end of the motor bracket 131 abuts upward against the elastic sealing assembly 120 and is limitedly engaged with the elastic sealing assembly 120 in the radial direction of the motor shaft 152; the motor bracket 131 has an upper end wall, the upper end of the motor body 151 is fixedly connected to the upper end wall of the motor bracket 131, and the lower end of the motor body 151 is embedded in the motor mounting cavity 145.

[0047] The elastic shock absorbing portion 144 is spaced apart from the motor bracket 131 in the vertical direction, and the motor bracket 131 and the peripheral wall of the motor body 151 around the motor shaft 152 are spaced apart from the inner wall surface of the brush handle housing 110 .

[0048] In this embodiment, the handle housing 110 can be a single-layer or double-layer structure, without specific limitation. The handle housing 110 can be made of metal, plastic, or other materials. If the handle housing 110 is a double-layer structure, the outer shell of the handle housing 110 can be made of metal, while the inner shell of the handle housing 110 can be made of plastic. The handle housing 110 is generally shaped like a long strip extending vertically. To facilitate gripping, the cross-section of the handle housing 110 is typically circular, oval, or other shapes.

[0049] The elastic sealing assembly 120 can specifically include one or more combinations of a sealing cover, a sealing ring, and a sealing sleeve. The sealing cover, sealing ring, and sealing sleeve can be made of elastic, waterproof materials such as rubber and silicone. The elastic sealing assembly 120 can have many structures and forms, and is not specifically limited here. It only needs to be able to seal the gap between the motor shaft 152 and the inner periphery of the extension hole 111 of the handle housing 110. The elastic sealing assembly 120 prevents water outside the handle housing 110 from flowing into the handle housing 110 through the gap between the inner wall of the extension hole 111 and the motor shaft 152, thereby affecting electrical components such as the motor 150. The specific type of motor 150 can be selected and designed according to actual needs and is not specifically limited here. The upper end of the motor shaft 152 extends out of the handle housing 110 through the extension hole 111 to be fixedly connected to the brush head assembly 200, thereby enabling the brush head assembly 200 to vibrate or rotate. It can be understood that the motor body 151 includes a motor shell 150 and a stator assembly, a rotor assembly, etc. disposed in the motor shell 150.

[0050] When the movement 130 is installed in the brush handle housing 110, the motor bracket 131 is spaced apart above the battery 170 bracket 140. The upper end of the motor body 151 is embedded in the motor bracket 131, and the lower end is embedded in the elastic shock-absorbing portion 144 of the battery 170 bracket 140, thereby achieving a fixed assembly of the motor body 151. By arranging the elastic shock-absorbing portion 144 of the battery 170 bracket 140 and the motor bracket 131 in a vertically spaced manner, the assembly of the motor 150 is more convenient than a structure in which the battery 170 bracket 140 and the motor bracket 131 are integrated. It also allows for differentiated designs of the battery 170 bracket 140 and the motor bracket 131, reducing manufacturing difficulty.

[0051] In order to improve the structural strength, the motor bracket 131 and the bracket body 141 can be made of hard materials, such as hard plastics. The elastic shock-absorbing part 144 can specifically be made of elastic materials such as rubber and silicone. The elastic shock-absorbing part 144 and the bracket body 141 can be fixedly connected by means of socketing, plugging, integral injection molding, etc., which are not specifically limited here. The elastic shock-absorbing part 144 has a motor mounting cavity 145 with an upward opening 143. The lower end of the motor body 151 is embedded in the motor mounting cavity 145, making the structure of the entire movement 130 more compact. The vibration of the motor body 151 in the axial direction of the motor shaft 152 is buffered and damped by the elastic shock-absorbing part 144 at the lower end and the elastic sealing assembly 120 at the upper end. Since the battery 170 is also installed on the bracket body 141, the weight of the battery 170 can be fully utilized for buffering and damping, effectively reducing the vibration transmitted from the motor 150 to the brush handle housing 110. At the same time, the motor bracket 131, the motor body 151 and the motor mounting cavity 145 are spaced apart from the inner wall surface of the brush handle housing 110 around the motor shaft 152, so that the vibration transmission of the motor 150 to the brush handle housing 110 in the radial direction of the motor shaft 152 is cut off, so that the vibration of the motor 150 cannot be transmitted to the brush handle housing 110 through the motor bracket 131, the motor body 151 and the peripheral wall of the elastic shock-absorbing part 144.

[0052] The lower end of the movement 130 is fixed to the inner wall of the brush handle housing 110, so that the upper end of the motor bracket 131 abuts the elastic seal assembly 120 upward and is limited and matched with the elastic seal assembly 120 in the radial direction of the motor shaft 152. Therefore, the upper end of the entire movement 130 is not directly fixed to the brush handle housing 110, and is only fixed in the axial and radial directions by the cooperation of the motor shaft 152, the motor bracket 131, and the elastic seal assembly 120. In this way, the vibration of the motor shaft 152 and the motor body 151 is absorbed and buffered by the elastic seal assembly 120 and is not transmitted to the brush handle housing 110 through rigid connectors such as screws. The upper end of the motor bracket 131 is limited and matched with the elastic seal assembly 120 in the radial direction of the motor shaft 152, so that the elastic seal assembly 120 can be sleeved around the outer periphery of the upper end of the motor bracket 131, or the elastic seal assembly 120 can be embedded in the upper end of the motor bracket 131. The upper end of the motor body 151 and the upper end wall of the motor bracket 131 can be fixedly connected by screw connection, bonding, etc.

[0053] The toothbrush handle 100 of the present invention is configured such that the upper end of the motor body 151 is fixedly connected to the upper end wall of the motor bracket 131, and the lower end of the motor body 151 is embedded in the elastic buffer portion of the battery 170 bracket 140; the motor bracket 131, the motor body 151 and the peripheral wall of the motor mounting cavity 145 around the motor shaft 152 are all spaced apart from the inner wall surface of the brush handle housing 110, and the upper end of the motor bracket 131 abuts the elastic sealing assembly 120 upward, and the motor bracket 131 is limitedly engaged with the elastic sealing assembly 120 in the radial direction of the motor shaft 152. In this way, the upper end of the entire movement 130 is only in contact with the brush handle housing 110 at the axial and radial upper limits of the motor shaft 152 through the elastic sealing assembly 120. The motor bracket 131 is suspended relative to the brush handle housing 110 in both the axial and radial directions of the motor shaft 152 and is not in direct contact with or connected to the brush handle housing 110. Therefore, the vibration transmitted from the motor 150 to the motor bracket 131 can be absorbed by the elastic sealing assembly 120, effectively preventing the vibration of the motor body 151 from being transmitted to the brush handle housing 110 through rigid fixings 162 such as screws, further reducing the vibration of the entire brush handle housing 110. At the same time, the upper end of the motor body 151 fully utilizes the elastic sealing assembly 120 of the motor shaft 152 to elastically limit the contact with the brush handle housing 110, eliminating the need for additional elastic buffer structures, reducing the number of parts and easing assembly difficulty. In addition, by arranging the elastic shock-absorbing portion 144 of the battery 170 bracket 140 and the motor bracket 131 at intervals in the upper and lower directions, compared with the structure in which the battery 170 bracket 140 and the motor bracket 131 are integrated, it is easier to assemble the motor 150, and the battery 170 bracket 140 and the motor bracket 131 can be designed differently, reducing the processing difficulty.

[0054] In one embodiment, as shown in Figures 2 to 7, a limiting boss 132 is convexly provided on the top surface of the upper end wall of the motor bracket 131, and the elastic sealing assembly 120 has a cylindrical portion 121 surrounding the periphery of the motor shaft 152, and the limiting boss 132 is fixedly embedded in the cylindrical portion 121; the inner wall surface of the brush handle housing 110 is provided with a surrounding wall 112 adapted to be fitted around the periphery of the cylindrical portion 121; the peripheral wall of the cylindrical portion 121 is clamped between the peripheral wall of the limiting boss 132 and the surrounding wall 112, and the upper end wall of the cylindrical portion 121 is clamped between the upper end surface of the limiting boss 132 and the inner wall surface of the brush handle housing 110.

[0055] Specifically, in this embodiment, the central portion of the inner wall surface of the upper end wall of the motor bracket 131 is raised upward to form the limiting boss 132. The cross-sectional shape of the limiting boss 132 can be selected and designed according to actual needs. For example, the cross-sectional shape of the limiting boss 132 can be circular, elliptical, or a special shape, and is not specifically limited here. The cylindrical portion 121 of the elastic sealing assembly 120 is adapted to fit around the limiting boss 132 to limit the radial displacement of the limiting boss 132 of the motor bracket 131 with respect to the motor shaft 152. The peripheral wall of the barrel portion 121 is clamped between the peripheral wall of the limiting boss 132 and the surrounding wall 112 of the brush handle shell 110, and the upper end wall of the barrel portion 121 is clamped between the upper end surface of the limiting boss 132 and the inner wall surface of the brush handle shell 110. In this way, the motor bracket 131 realizes buffering, shock absorption and limiting fixation in the radial and axial directions of the motor shaft 152 through the elastic cooperation between the limiting boss 132 and the barrel portion 121 of the elastic sealing assembly 120. There is no need to additionally set rigid fixing parts 162 such as screws to connect the motor bracket 131, the elastic sealing assembly 120 and the brush handle shell 110, which can effectively cut off the vibration transmission of the rigid parts, and further reduce the vibration of the brush handle while ensuring reliable connection.

[0056] In practice, the inner circumferential wall of the barrel portion 121 is interference-fitted or glued to the outer circumferential surface of the limiting boss 132. This interference-fitting or glueing of the inner circumferential wall of the barrel portion 121 and the outer circumferential surface of the limiting boss 132 can further enhance the stability and reliability of the connection between the two, thereby preventing the limiting boss 132 from being separated from the barrel portion 121 due to accidental dropping of the toothbrush handle 100.

[0057] In one embodiment, please refer to Figures 8 to 10 and 13, the inner wall surface of the cylindrical portion 121 is partially convex to form a mounting lug 122; the outer circumferential surface of the limiting boss 132 is provided with a positioning protrusion 133 corresponding to the mounting lug 122, and the mounting lug 122 is adapted to be arranged on the periphery of the positioning protrusion 133.

[0058] In this embodiment, the inner wall surface of the cylindrical portion 121 is partially convex to form a mounting lug 122, and a positioning protrusion 133 is provided on the outer circumference of the limiting boss 132 corresponding to the mounting lug 122. Through the cooperation between the mounting lug 122 and the positioning protrusion 133, on the one hand, the friction contact area between the elastic sealing component 120 and the limiting boss 132 can be increased, so that the connection between the elastic sealing component 120 and the motor bracket 131 is more stable and reliable. On the other hand, the cooperation between the mounting lug 122 and the positioning protrusion 133 can also limit the rotation of the motor bracket 131 relative to the elastic sealing component 120 around the axis of the motor shaft 152.

[0059] Furthermore, the cylindrical portion 121 is provided with at least two mounting lugs 122 spaced apart in its circumferential direction, and the opposite side walls of the mounting lugs 122 are provided with friction ridges 123 extending in the up-down direction and abutting against the surrounding wall 112; the mounting lugs 122 are spaced apart from the surrounding wall 112 on the radial side walls of the motor shaft 152.

[0060] In this embodiment, the number of mounting lugs 122 can be selected and designed according to actual needs. Optionally, two mounting lugs 122 are provided, and the two mounting lugs 122 are symmetrically arranged relative to the axis of the cylindrical portion 121. The number of friction ribs 123 can be set to one, two, three, or more. It is understandable that a single mounting lug 122 has three side walls in the circumferential direction. By providing friction ribs 123 on two opposite side surfaces of the mounting lug 122, the friction between the mounting lug 122 and the surrounding wall 112 can be increased, further improving the stability and reliability of the connection between the cylindrical portion 121 and the surrounding wall 112.

[0061] In one embodiment, as shown in Figures 7 and 10, the motor bracket 131 also includes a sleeve portion 134 extending downward from the outer periphery of its upper end wall, and the sleeve portion 134 is sleeved on the outer periphery of the motor body 151. The sleeve portion 134 includes a hard sleeve 135 and an elastic lining 136 provided on the inner side of the hard sleeve 135. The inner peripheral wall of the hard sleeve 135 is spaced apart from the inner wall surface of the brush handle shell 110, and the elastic lining 136 elastically abuts against the outer peripheral surface of the motor body 151.

[0062] In this embodiment, the hard sleeve 135 and the elastic lining 136 can be separately molded. In order to simplify assembly and improve connection strength, preferably, the hard sleeve 135 and the elastic lining 136 are integrally injection molded. The hardness of the hard sleeve 135 is higher than that of the elastic lining 136. The hard sleeve 135 can be made of hard plastic, hard rubber and other materials, and the elastic lining 136 can be made of flexible materials such as silicone and TPU. By making the sleeve portion 134 of the motor bracket 131 include a hard sleeve 135 and an elastic lining 136, the hard sleeve 135 can limit the deflection of the motor body 151 in the radial direction of the motor shaft 152, thereby preventing the motor body 151 from vibrating too much and hitting the brush handle housing 110, and the elastic lining 136 can cushion the vibration of the motor body 151 in the radial direction of the motor shaft 152, thereby weakening the vibration of the entire movement 130.

[0063] In one embodiment, please refer to Figures 4 to 7, 11 and 12, the elastic shock-absorbing portion 144 includes a mounting tube 146 and an elastic guide bar 147 extending downward from the mounting tube 146, the mounting tube 146 is fixedly connected to the upper end of the bracket body 141, the mounting tube 146 encloses the motor mounting cavity 145, and the elastic guide bar 147 is clamped between the outer peripheral wall of the bracket body 141 and the inner wall surface of the brush handle shell 110.

[0064] In this embodiment, the elastic shock-absorbing part 144 can be made of rubber. In order to improve the structural strength, the mounting tube 146 and the elastic guide strip 147 are integrally formed, and the mounting tube 146 and the bracket body 141 are integrally formed. The elastic guide strip 147 of the elastic shock-absorbing part 144 is sandwiched between the outer peripheral wall of the bracket body 141 and the brush handle shell 110, which can buffer the vibration transmitted to the bracket body 141 by the motor 150 and then transmit it to the brush handle shell 110, thereby effectively reducing the vibration of the brush handle. Specifically, the mounting tube 146 is spaced apart from the outer peripheral wall of the elastic guide strip 147 and the inner peripheral wall of the brush handle shell 110. In this way, the vibration transmitted from the motor 150 to the mounting tube 146 cannot be directly transmitted to the brush handle shell 110 through the mounting tube 146, further weakening the vibration.

[0065] In one embodiment, as shown in Figures 2 to 4 and 7, the movement 130 also includes a thickened end plate 161 and a fixing member 162. The thickened end plate 161 is fixedly connected to the upper end surface of the motor body 151 and is clamped between the upper end wall of the motor bracket 131 and the upper end surface of the motor body 151. The fixing member 162 passes through the upper end wall of the motor bracket 131 and is connected to the thickened end to fix the motor body 151 and the motor bracket 131.

[0066] In this embodiment, the fixing member 162 can specifically be a screw. The thickness of the thickened end portion is greater than the thickness of the upper end wall of the motor body 151. The end plate is suitable for processing threaded holes, and the motor 150 housing is suitable for sheet metal stamping and deep drawing. The thickened end plate 161 and the motor body 151 can be fixedly connected by gluing, welding, etc. By arranging the thickened end plate 161 between the upper end wall of the motor bracket 131 and the upper end surface of the motor body 151, the fixing member 162 can realize the connection between the motor bracket 131 and the motor body 151 through the thickened end plate 161, and there is no need to connect the motor bracket 131 to the brush handle housing 110 by screws, thereby avoiding the vibration from being transmitted to the brush handle housing 110 through the screws, and making the connection between the motor bracket 131 and the motor body 151 more reliable.

[0067] In one embodiment, referring to Figures 6, 7 and 11, the battery compartment 142 has interconnected openings 143 on one radial side and the lower end of the motor shaft 152; the movement 130 also includes a battery 170, and the battery 170 is fixedly installed in the battery compartment 142 via the opening 143. A buffer member 180 is provided between the lower end of the battery 170 and the side wall of the battery 170 exposed through the opening 143 and the brush handle housing 110; the lower end of the bracket body 141 is detachably fixedly connected to the brush handle housing 110.

[0068] In this embodiment, the battery 170 can specifically be a soft-pack battery 170, consisting of two flat batteries 170 stacked radially along the handle housing 110. The capacity and output power of this soft-pack battery 170 are greater than those of two conventional standard cylindrical batteries 170. By providing interconnected openings 143 on one radial side and at the lower end of the battery compartment 142 of the motor shaft 152, the battery 170 can be installed into the battery compartment 142 of the battery 170 holder 140 from the side and bottom, making assembly of the battery 170 easier and faster. The buffer 180 can specifically be an elastic buffer structure such as foam. By providing the buffer 180 at the lower end of the motor 150 and between the sidewall where the battery 170 is exposed through the opening 143 and the handle housing 110, vibrations from the battery 170 holder 140 are prevented from being transmitted to the handle housing 110 through the battery 170, while also limiting the position of the battery 170. The lower end of the bracket body 141 can be detachably fixedly connected to the handle housing 110 by means of a snap-fit, a chamfered connection, etc. By making the lower end of the bracket body 141 detachably fixedly connected to the handle housing 110, the lower end of the movement 130 is detachably connected to the handle housing 110, and the upper end of the movement 130 is limitedly abutted against the handle housing 110 via the elastic sealing assembly 120, making the assembly of the entire movement 130 in the handle housing 110 simple and reliable.

[0069] In one embodiment, as shown in Figures 2, 5 and 6, the toothbrush handle 100 also includes a control panel 190, which is electrically connected to the motor 150 and the battery 170. The control panel 190 extends in the up and down directions, and the upper end of the control panel 190 is fixedly connected to the motor bracket 131, and the lower end of the control panel 190 is fixedly connected to the bracket body 141.

[0070] In this embodiment, the control board 190 extends downward from the battery 170 bracket 140 to the bracket body 141. By having the upper end of the control board 190 fixedly connected to the motor bracket 131 and the lower end of the control board 190 connected to the bracket body 141, the installation of the entire control board 190 is simplified compared to a method in which the control board 190 is divided into two separate sections, one connected to the motor 150 housing and the other to the battery 170 bracket 140. Furthermore, because the control board 190 is connected to both the motor bracket 131 and the bracket body 141 of the battery 170 bracket 140, it avoids direct contact with the motor 150 housing, thereby reducing vibrations directly transmitted from the motor 150 to the control board 190. In addition, since the upper end of the motor bracket 131 of the present invention is not fixedly connected to the brush handle housing 110 by screws, but is elastically abutted against the brush handle housing 110 via the elastic sealing assembly 120, the upper and lower ends of the control board 190 are respectively connected to the motor bracket 131 and the bracket body 141. That is, the motor bracket 131 is connected to the bracket body 141 via the control board 190, and the bracket body 141 is fixedly connected to the brush handle housing 110. This can further strengthen the positional fixation of the motor bracket 131, making the assembly of the entire movement 130 in the brush handle housing 110 more stable and less prone to shaking. Specifically, a snap-fit ​​structure can be provided on the motor bracket 131 and the bracket body 141 to snap-fit ​​and fix the upper and lower ends of the control board 190.

[0071] Furthermore, referring to Figure 2 , the control board 190 is spaced apart from the outer wall of the elastic damping portion 144. Since the upper end of the motor body 151 is fixedly connected to the motor bracket 131 and the lower end is embedded in the elastic damping portion 144, the spaced-apart arrangement of the control board 190 and the elastic damping portion 144 prevents the control board 190 from directly contacting the elastic damping portion 144, thereby reducing vibration transmission and preventing resonance.

[0072] The present invention also proposes an electric toothbrush, please refer to Figure 14, the electric toothbrush includes a brush head assembly 200 and a toothbrush handle 100. The specific structure of the toothbrush handle 100 refers to the above embodiment. The brush head assembly 200 is connected to the end of the motor shaft 152 extending from the brush handle housing 110. Since this electric toothbrush adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here. In order to facilitate the replacement of the brush head assembly 200, the brush head assembly 200 is detachably connected to the motor shaft 152. The specific structure and form of the brush head assembly 200 can refer to the existing design and will not be described in detail here.

[0073] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A toothbrush handle, comprising a handle shell, an elastic sealing assembly and a movement arranged in the handle shell, wherein the upper end surface of the handle shell is provided with an extension hole communicating with its inner cavity; the movement comprises a motor bracket, a battery bracket and a motor, the motor comprises a motor body and a motor shaft connected to each other, and the motor shaft extends out of the handle shell through the extension hole; the elastic sealing assembly is sleeved on the outer periphery of the motor shaft, and a sealing clamp is arranged between the inner wall surface of the extension hole and the motor shaft; characterized in that: The battery bracket comprises a bracket body and an elastic shock-absorbing part connected to the upper end of the bracket body, the bracket body is provided with a battery compartment, the elastic shock-absorbing part is formed with a motor installation cavity open upward, and the bracket body is fixedly connected to the brush handle housing; The upper end of the motor bracket abuts against the elastic sealing component upward, and is limitedly matched with the elastic sealing component in the radial direction of the motor shaft; the motor bracket has an upper end wall, the upper end of the motor body is fixedly connected to the upper end wall of the motor bracket, and the lower end of the motor body is embedded in the motor installation cavity; wherein, The elastic shock absorbing part and the motor bracket are spaced apart in the up-down direction, and the motor bracket and the peripheral wall of the motor body around the motor shaft are spaced apart from the inner wall surface of the brush handle housing.

2. The toothbrush handle according to claim 1, characterized in that: The top surface of the upper end wall of the motor bracket is convexly provided with a limiting boss, the elastic sealing assembly has a cylindrical portion surrounding the periphery of the motor shaft, and the limiting boss is fixedly embedded in the cylindrical portion; the inner wall surface of the brush handle shell is provided with a surrounding wall adapted to be mounted on the periphery of the cylindrical portion; the peripheral wall of the cylindrical portion is clamped between the peripheral wall of the limiting boss and the surrounding wall, and the upper end wall of the cylindrical portion is clamped between the upper end surface of the limiting boss and the inner wall surface of the brush handle shell.

3. The toothbrush handle according to claim 2, characterized in that: The inner peripheral wall of the cylinder portion and the outer peripheral surface of the limiting boss are interference fit or glued.

4. The toothbrush handle according to claim 3, characterized in that: The inner wall surface of the cylinder part is convex outward to form a mounting lug; the outer peripheral surface of the limiting boss is provided with a positioning lug corresponding to the mounting lug, and the mounting lug is adapted to be arranged on the periphery of the positioning lug.

5. The toothbrush handle according to claim 4, characterized in that: The cylindrical body is provided with at least two mounting lugs spaced apart in its circumferential direction, and the opposite side walls of the mounting lugs are provided with friction ridges extending in the up-down direction and abutting against the surrounding wall; the mounting lugs are spaced apart from the surrounding wall on the radial side walls of the motor shaft.

6. The toothbrush handle according to any one of claims 1 to 5, characterized in that: The motor bracket also includes a sleeve portion extending downward from the outer periphery of its upper end wall, the sleeve portion is sleeved on the outer periphery of the motor body, the sleeve portion includes a hard sleeve and an elastic lining arranged on the inner side of the hard sleeve, the inner circumferential wall of the hard sleeve is spaced apart from the inner wall surface of the brush handle shell, and the elastic lining is elastically abutted against the outer circumferential surface of the motor body.

7. The toothbrush handle according to any one of claims 1 to 5, characterized in that: The elastic shock absorbing part includes a mounting tube and an elastic guide strip extending downward from the mounting tube, the mounting tube is fixedly connected to the upper end of the bracket body, the mounting tube encloses the motor mounting cavity, and the elastic guide strip is clamped between the outer peripheral wall of the bracket body and the inner wall surface of the brush handle shell.

8. The toothbrush handle according to any one of claims 1 to 5, characterized in that: The movement also includes a thickened end plate and a fixing piece, wherein the thickened end plate is fixedly connected to the upper end surface of the motor body and is clamped between the upper end wall of the motor bracket and the upper end surface of the motor body, and the fixing piece passes through the upper end wall of the motor bracket and is connected to the thickened end portion to fix the motor body and the motor bracket.

9. The toothbrush handle according to any one of claims 1 to 5, characterized in that: The battery compartment has interconnected openings on one radial side and a lower end of the motor shaft; the movement also includes a battery, and the battery is fixedly installed in the battery compartment via the opening, and a buffer is provided between the lower end of the battery and the side wall of the battery exposed via the opening and the brush handle shell; the lower end of the bracket body is detachably fixedly connected to the brush handle shell.

10. The toothbrush handle according to any one of claims 1 to 5, characterized in that The toothbrush handle also includes a control panel, which is electrically connected to the motor and the battery. The control panel extends in the up-down direction, and the upper end of the control panel is fixedly connected to the motor bracket, and the lower end of the control panel is fixedly connected to the bracket body.

11. The toothbrush handle according to claim 10, characterized in that The control plate is spaced apart from the outer wall surface of the elastic shock absorbing part.

12. An electric toothbrush, characterized in that: It comprises a brush head assembly and a toothbrush handle as claimed in any one of claims 1 to 11, wherein the brush head assembly is connected to an end of a motor shaft of the toothbrush handle extending out of a brush handle housing.

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