Electric toothbrush and handle thereof

Abstract

The embodiment of the utility model provides an electric toothbrush and a handle thereof. The handle comprises a handle shell and a machine core. The handle shell comprises a plastic section and a metal section, at least the shell part of the plastic section is a plastic part or the whole plastic part, and the plastic section comprises a light-transmitting part; the metal section is connected with the plastic section along the length direction of the handle shell, and at least the shell part of the metal section is a metal piece or the whole is a metal piece; the movement is arranged in the handle shell and connected with at least one of the plastic section and the metal section, the movement comprises a light-emitting part, and the light-emitting part and the light-transmitting part are arranged correspondingly. According to the electric toothbrush and the handle thereof, on the basis that the handle shell is provided with the metal shell, the light-transmitting part can be formed through a simple process, the display function of the electric toothbrush is achieved, and the production cost is reduced.

Description

Technical Field

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

[0002] In the related art, an electric toothbrush includes a brush handle and a movement disposed in the brush handle, and the output shaft of the movement passes through the brush handle and is connected to the brush head. The movement drives the brush head to vibrate at a high frequency, and the high-frequency vibrating brush head contacts the teeth or gums, thereby cleaning the user's oral cavity. In order to achieve stable assembly of the movement in the handle shell, the handle shell is usually made of hard plastic, and the support of the movement is also made of hard plastic. In this way, it is convenient to form mutually matching mounting structures on the inner wall of the handle shell and the support through the injection molding process, and the stable installation of the movement and the handle shell is achieved through the mounting structure.

[0003] When the handle shell is made of metal, it is usually necessary to open a hole in the metal handle shell and fill the hole with a light-transmitting material to form a display shell, thereby realizing the display function of the handle shell. However, the production process of the above structure is complicated and the production cost is high. Utility Model Content

[0004] The present application provides an electric toothbrush and a handle thereof, which, based on a metal shell, can form a light-transmitting portion through a simple process, thereby realizing the display function of the electric toothbrush and reducing production costs.

[0005] In a first aspect, an embodiment of the present application provides a handle for an electric toothbrush, the handle comprising:

[0006] A handle shell, comprising a plastic section and a metal section, wherein at least the outer shell portion of the plastic section is a plastic part or the entire section is a plastic part, and the plastic section comprises a light-transmitting portion; the metal section is connected to the plastic section along the length direction of the handle shell, and at least the outer shell portion of the metal section is a metal part or the entire section is a metal part; and

[0007] The movement is arranged in the handle shell and connected to at least one of the plastic segment and the metal segment. The movement includes a light-emitting component, and the light-emitting component is arranged corresponding to the light-transmitting portion.

[0008] Optionally, the plastic segment comprises:

[0009] A housing, wherein the housing is a light-transmitting plastic part; and

[0010] Liner; arranged on the inner wall of the shell, the liner is a non-light-transmitting plastic part or a non-light-transmitting metal part, and the liner has an inner light-transmitting hole, and the inner light-transmitting hole and the area of ​​the shell corresponding to the inner light-transmitting hole constitute the light-transmitting part.

[0011] Optionally, the outer shell is formed on the surface of the inner lining by an injection molding process, and the outer shell extends into the inner light-transmitting hole.

[0012] Optionally, the plastic segment comprises:

[0013] The shell is a non-light-transmitting plastic part and has an external light-transmitting hole.

[0014] The lining is a light-transmitting plastic part, which is arranged on the inner wall of the shell, and the part of the lining extending into the outer light-transmitting hole constitutes the light-transmitting part.

[0015] Optionally, the outer shell is arranged around the inner liner, and / or the outer shell and the inner liner are both plastic parts and are integrally formed.

[0016] Optionally, the plastic segment further includes:

[0017] The button, the shell has a first button hole, the lining has a second button hole, the first button hole corresponds to the second button hole, the button is arranged in the first button hole and connected to the shell, and at least the part connected to the shell is a soft rubber part.

[0018] Optionally, the handle shell further includes:

[0019] The connecting portion extends from the plastic segment into the metal segment and is connected to the inner wall of the metal segment.

[0020] Optionally, the connecting portion extends to an end of the metal segment facing away from the plastic segment.

[0021] Optionally, the thickness of the connecting portion is greater than the thickness of the metal segment.

[0022] Optionally, the thickness of the connecting portion is not less than 0.6 mm and not more than 2.5 mm, and the thickness of the metal segment is not less than 0.3 mm and not more than 1.2 mm.

[0023] Optionally, a first mounting structure is provided on the plastic segment and / or the connecting portion, and the first mounting structure is used to cooperate with a second mounting structure on the movement of the electric toothbrush, and the cooperation relationship between the second mounting structure and the first mounting structure includes at least one of snap-on, mutual limiting, mutual fixing and mutual guiding.

[0024] Optionally, the contour line of the inner wall of the metal segment and the contour line of the inner wall of the connecting portion are both non-standard circles, or the inner wall surface of the metal segment is a smooth wall surface, and the connecting portion is fixed to the smooth wall surface by an injection molding process.

[0025] Optionally, the connecting portion is formed on the inner wall of the metal segment by an injection molding process and is integrally formed with the plastic segment; or, the metal segment and the connecting portion are separate components, the metal segment is assembled to the connecting portion, and the connecting portion and the plastic segment are integrally formed.

[0026] Optionally, a first guide portion is provided on the inner wall of the plastic segment, the first guide portion is used for slidingly cooperating with a second guide portion on the movement of the electric toothbrush, and the first guide portion and the light-transmitting portion are located on different sides of the plastic segment in the circumferential direction.

[0027] Optionally, the metal segment has a key area, and the thickness of the key area is smaller than the thickness of other positions of the metal segment.

[0028] Optionally, the surface of the plastic segment transitions smoothly with the surface of the metal segment.

[0029] Optionally, the number of the metal segments is two, and the two metal segments are respectively arranged on opposite sides of the plastic segment along the length direction of the handle shell.

[0030] Optionally, the two metal segments are a first metal segment and a second metal segment, the first metal segment is arranged close to the brush head of the electric toothbrush, and the second metal segment is arranged away from the brush head, the length of the first metal segment is smaller than the length of the plastic segment, and the length of the plastic segment is smaller than the length of the second metal segment.

[0031] Optionally, the length of the first metal segment is not less than 10 mm, the length of the plastic segment is not less than 30 mm, the length of the second metal segment is not less than 40 mm, and the total length of the handle shell is greater than 100 mm.

[0032] A second aspect of the present application provides an electric toothbrush, comprising:

[0033] A handle as described in any one of the above items; and

[0034] A brush head is detachably connected to the handle.

[0035] The electric toothbrush and its handle provided by the embodiment of the present application, by providing a plastic segment connected to the metal segment, on the one hand, by utilizing the high hardness of the metal part, the handle shell can have a high structural strength. On the other hand, a light-transmitting portion is provided on the plastic segment, and the light-transmitting portion is formed together when the plastic segment is injection molded. The light-transmitting portion is provided corresponding to the light-emitting part of the movement, and the light emitted by the light-emitting part is transmitted to the outside of the handle shell through the light-transmitting portion to realize the display function. The plastic segment can be molded on the metal segment by injection molding, and the molding process is simple. Therefore, the production process of the light-transmitting portion can be simplified, and the production efficiency can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0037] Figure 1 This is a schematic diagram of the structure of an electric toothbrush in an embodiment of the present application;

[0038] Figure 2 This is a schematic diagram of the structure of a handle shell in one embodiment of the present application;

[0039] Figure 3 This is a schematic diagram of the exploded structure of a handle shell in one embodiment of the present application;

[0040] Figure 4 This is a schematic structural diagram of a handle shell in one embodiment of the present application from another perspective;

[0041] Figure 5 for Figure 4 A schematic cross-sectional view of the middle handle shell along section AA;

[0042] Figure 6 for Figure 5 Schematic diagram of the enlarged structure of part B in the middle.

[0043] Explanation of the reference numerals: 100 - electric toothbrush; 10 - hand; 11 - handle shell; 12 - movement; 121 - circuit board; 122 - battery; 123 - motor; 124 - light-emitting part; 13 - plastic segment; 131 - light-transmitting part; 132 - outer shell; 132a - first button hole; 133 - lining; 133a - inner light-transmitting hole; 133b - second button hole; 134 - button; 14 - metal segment; 14A - first metal segment; 14B - second metal segment; 141 - button area; 15 - connecting part; 16 - first mounting structure; 161 - first guide part; 20 - brush head. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0045] See also Figure 1The present application provides an electric toothbrush 100, which includes a handle 10 and a brush head 20 detachably connected to the handle 10. The handle 10 is used to drive the brush head 20 to vibrate at a high frequency. When the brush head 20 acts on the user's oral cavity, the user's oral cavity can be cleaned. Specifically, the handle 10 may include a handle shell 11 and a movement 12 disposed in the handle shell 11.

[0046] The handle shell 11 is an appearance component of the electric toothbrush 100 and is suitable for being held by a user to facilitate the user to use the electric toothbrush 100. At the same time, the handle shell 11 can also protect the movement 12 installed therein.

[0047] The movement 12 is a power component for realizing the brushing function of the electric toothbrush 100. The movement 12 may include a circuit board 121, a battery 122, and a motor 123, etc. The battery 122 is used to supply power to the motor 123 and the circuit board 121, and the circuit board 121 is used to control the operation of the motor 123. When the motor 123 is operating, the high-frequency vibration energy is transmitted to the brush head 20 through the output shaft to drive the brush head 20 to vibrate at a high frequency.

[0048] In some embodiments, the electric toothbrush 100 also has a display function, which can provide prompts or guidance for the brushing process. Correspondingly, the movement 12 further includes a light-emitting element 124, which may include a lamp bead or a display screen. The light-emitting element 124 is electrically connected to the circuit board 121. Under the control of the circuit board 121, the light-emitting element 124 emits corresponding light when working, and the light is transmitted outside the handle shell 11 and seen by the user, thereby realizing the display function.

[0049] In the related art, when the handle shell is made of metal, in order to make the handle shell translucent and realize the display function, it is necessary to open a hole in the metal handle shell and fill the hole with translucent material to form a display shell, thereby realizing the display function of the handle shell. However, the production process of the above structure is complicated and the production cost is high.

[0050] In order to solve the above problems, in some embodiments, please refer to Figure 1-2 The handle shell 11 includes a plastic segment 13 and a metal segment 14. At least one of the plastic segment 13 and the metal segment 14 is connected to the movement 12. Exemplarily, both the plastic segment 13 and the metal segment 14 are connected to the movement 12 to enhance the connection stability between the movement 12 and the handle shell 11.

[0051] At least the outer shell 132 of the plastic segment 13 is a plastic part or the entire plastic part. The plastic segment 13 includes a light-transmitting portion 131 (such as Figure 2The light-transmitting portion 131 is formed when the plastic segment 13 is injection molded. The light-emitting element 124 is arranged corresponding to the light-transmitting portion 131, and the light emitted by the light-emitting element 124 can pass through the light-transmitting portion 131 to the outside of the handle shell 11, so as to realize the display function of the electric toothbrush 100.

[0052] The metal segment 14 is connected to the plastic segment 13 along the length direction of the handle shell 11. At least the outer shell 132 of the metal segment 14 is a metal part or the entire metal part. The metal segment 14 can be, for example, aluminum, stainless steel, etc. By utilizing the high hardness of metal parts, the handle shell 11 can have a higher structural strength.

[0053] If a light-transmitting portion 131 is provided on the metal segment 14, the metal segment 14 needs to be firstly formed by wire drawing, and then a through hole is opened on the metal segment 14 by machining, and then a transparent plastic is filled into the through hole by injection molding to form the light-transmitting portion 131. The above process is complicated and has low production efficiency.

[0054] In this embodiment, by providing the plastic segment 13 connected to the metal segment 14, on the one hand, the high hardness of the metal part can be used to make the handle shell 11 have a high structural strength. On the other hand, a light-transmitting portion 131 is provided on the plastic segment 13, and the light-transmitting portion 131 is formed together when the plastic segment 13 is injection molded. The light-transmitting portion 131 is provided corresponding to the light-emitting component 124 of the movement 12, and the light emitted by the light-emitting component 124 is transmitted to the outside of the handle shell 11 through the light-transmitting portion 131 to realize the display function. The plastic segment 13 can be molded on the metal segment 14 by the injection molding process, and the molding process is simple. Therefore, the production process of the light-transmitting portion 131 can be simplified to improve the production efficiency.

[0055] See also Figure 2-3 In some embodiments, the plastic segment 13 includes an outer shell 132 and an inner lining 133 disposed on the inner wall of the outer shell 132. The outer shell 132 is a light-transmitting plastic part. The inner lining 133 is disposed on the inner wall of the outer shell 132. For example, the outer shell 132 can be molded on the surface of the inner lining 133 by an injection molding process. The inner lining 133 is a non-light-transmitting plastic part or a non-light-transmitting metal part, and the inner lining 133 has an inner light-transmitting hole 133a. When the inner lining 133 is a non-light-transmitting plastic part, the inner light-transmitting hole 133a can be reserved when the inner lining 133 is injection-molded. When the inner lining 133 is a non-light-transmitting metal part, the inner light-transmitting hole 133a can be machined by machining. The inner light hole 133a and the area of ​​the outer shell 132 corresponding to the inner light hole 133a constitute the light-transmitting portion 131, and the light emitted by the light-emitting element 124 can pass through the inner light hole 133a and the area of ​​the outer shell 132 corresponding to the inner light hole 133a in turn to be transmitted out of the handle shell 11.

[0056] In some embodiments, the outer shell 132 is formed on the surface of the lining 133 by an injection molding process, and the outer shell 132 extends into the inner light-transmitting hole 133a, that is, while the outer shell 132 is molded on the surface of the lining 133 by the injection molding process, the light-transmitting plastic used for injection molding is filled in the inner light-transmitting hole 133a. After the light-transmitting plastic is solidified, a portion of the outer shell 132 is embedded in the inner light-transmitting hole 133a, thereby increasing the connection area between the outer shell 132 and the lining 133 on the basis of achieving light transmission of the light-transmitting portion 131, improving the connection stability between the large outer shell 132 and the lining 133, and reducing the risk of the outer shell 132 falling off the lining 133.

[0057] In other embodiments, the plastic segment 13 includes an outer shell 132 and an inner liner 133 disposed on the inner wall of the outer shell 132. The outer shell 132 is a non-light-transmitting plastic part, for example, the outer shell 132 can be a non-light-transmitting plastic, and the outer shell 132 has an external light-transmitting hole (not shown in the figure). The inner liner 133 is a light-transmitting plastic part, and the part of the inner liner 133 extending into the external light-transmitting hole constitutes the light-transmitting portion 131. For example, the light-transmitting portion 131 for extending into the external light-transmitting hole can be formed while the inner liner 133 is formed by an injection molding process. After that, the outer shell 132 can be formed on the surface of the inner liner 133 by an injection molding process. The outer shell 132 is arranged around the light-transmitting portion 131 and forms an external light-transmitting hole for the light-transmitting portion 131 to extend therein.

[0058] Please continue reading Figure 2-3 In some embodiments, the outer shell 132 is arranged around the inner lining 133, that is, the outer shell 132 surrounds the inner lining 133. In this way, on the one hand, the outer shell 132 is not easy to be separated from the inner lining 133 in any radial direction, and the connection stability between the outer shell 132 and the inner lining 133 is better; on the other hand, the light-transmitting portion 131 can be arranged at any position in the circumferential direction of the outer shell 132, so that the position of the light-transmitting portion 131 is more flexible. In addition, the extension length of the light-transmitting portion 131 can be adjusted along the circumferential direction of the handle shell 11 to adjust the light-transmitting area of ​​the light-transmitting portion 131.

[0059] For example, a light-transmitting portion 131 is provided on at least one of the front, rear, left and right sides of the plastic segment 13. For another example, an annular light-transmitting portion 131 can be provided on the plastic segment 13, so that the handle shell 11 has a light-transmitting position at any position in the circumferential direction. By providing an annular flexible display screen or a circularly arranged lamp bead matrix inside the handle shell 11, an annular display of the handle shell 11 can be achieved, so that the user can observe part of the display content when observing the handle shell 11 from any radial direction of the handle shell 11, thereby making the electric toothbrush 100 have a more comprehensive display function.

[0060] In some embodiments, the shell 132 and the liner 133 are both plastic parts and are integrally formed. In this embodiment, the liner 133 and the shell 132 are both light-transmitting parts. After the metal segment 14 is formed, the liner 133 and the shell 132 can be simultaneously formed in a one-time injection molding process. In this way, the injection molding process is simpler and the connection stability between the liner 133 and the shell 132 is better. Based on this, a light-shielding layer (not shown in the figure) can be set on the shell 132 and the liner 133, and the area not covered by the light-shielding layer is the light-transmitting portion 131. Exemplarily, a light-shielding layer can be set between the shell 132 and the liner 133, or a light-shielding layer can be set on the inner wall of the liner 133, or a light-shielding layer can be set on the outer surface of the shell 132 and a coating layer (not shown in the figure) can be set outside the light-shielding layer. The coating layer can not only improve the smoothness of the surface of the shell 132, but also protect the light-shielding layer to prevent the light-shielding layer from being worn by external objects.

[0061] Please continue reading Figure 2-3 In some embodiments, the plastic segment 13 also includes a button 134, the shell 132 has a first button hole 132a, the lining 133 has a second button hole 133b, the first button hole 132a corresponds to the second button hole 133b, the button 134 is arranged in the first button hole 132a, and is connected to the shell 132, and at least the part where the button 134 is connected to the shell 132 is a soft rubber part. In this way, not only can a seamless connection between the button 134 and the shell 132 be achieved to improve the waterproof performance, but also the connection stability between the button 134 and the shell 132 can be improved. In addition, the soft rubber part is easy to deform, and the button 134 can move relative to the shell 132, so that when the button 134 is pressed by the user, it can move into the handle shell 11 to trigger the corresponding control function.

[0062] See also Figure 3 In some embodiments, the handle shell 11 further includes a connecting portion 15, which extends from the plastic segment 13 into the metal segment 14 and is connected to the inner wall of the metal segment 14. Specifically, when the plastic segment 13 is a plastic part as a whole, that is, when the aforementioned outer shell 132 and the inner lining 133 are both plastic parts, the connecting portion 15 is integrally formed with the plastic segment 13, extends from the inner lining 133 to the metal segment 14, and forms a surface connection with the inner wall of the metal segment 14, thereby improving the connection stability between the metal segment 14 and the plastic segment 13 through the connecting portion 15.

[0063] See also Figure 2-3 In some embodiments, the connecting portion 15 extends to the end of the metal segment 14 that is away from the plastic segment 13, that is, the connecting portion 15 extends from the end of the metal segment 14 close to the plastic segment 13 to the end of the metal segment 14 that is away from the plastic segment 13. In this way, the contact area between the connecting portion 15 and the metal segment 14 can be increased, and the connection stability between the connecting portion 15 and the inner wall of the metal segment 14 can be improved.

[0064] Please refer to 4-6. In some embodiments, the thickness H1 of the connection portion 15 is greater than the thickness H2 of the metal segment 14. Since the weight of the metal segment 14 is generally heavier, the thickness H2 of the metal segment 14 is thinner than the thickness H1 of the connection portion 15, which can reduce the overall weight of the handle shell 11. In addition, the connection portion 15 can also be used to fix the movement 12. The thickness H1 of the lining 133 is relatively thick, which is convenient for setting up the installation structure for installing the movement 12. In addition, during the operation of the movement 12, the thicker connection portion 15 can cushion the vibration of the motor 123.

[0065] In some embodiments, the thickness H1 of the connection portion 15 is not less than 0.6 mm and not more than 2.5 mm, so that it is convenient to mold the connection portion 15 and the connection portion 15 does not occupy too much internal space of the handle shell 11, so as to leave a larger space for installing the movement 12. If the thickness H1 of the connection portion 15 is less than 0.6 mm, the thickness of the connection portion 15 is too thin, which is not only not conducive to molding the connection portion 15, but also not convenient to set the installation structure for installing the movement 12 on the connection portion 15. If the thickness H1 of the connection portion 15 is greater than 2.5 mm, the thickness H1 of the connection portion 15 is too thick, and it occupies too much internal space of the handle shell 11 in the radial direction of the handle shell 11, which is not conducive to installing the movement 12 in the handle shell 11.

[0066] In some embodiments, the thickness H2 of the metal segment 14 is not less than 0.3 mm and not more than 1.2 mm, so that the metal segment 14 is ensured to have sufficient structural strength and a relatively suitable weight. If the thickness H2 of the metal segment 14 is less than 0.3 mm, the metal segment 14 is too thin and cannot provide sufficient structural strength. When the electric toothbrush 100 accidentally falls, the structure of the metal segment 14 is easily damaged; if the thickness H2 of the metal segment 14 is greater than 1.2 mm, the metal segment 14 is too thick and the weight of the metal segment 14 is too heavy, resulting in the overall weight of the handle shell 11 being too heavy, and the user's hands are easily tired when brushing their teeth.

[0067] See also Figure 5 In some embodiments, a first mounting structure 16 is provided on the plastic segment 13 and / or the connecting portion 15. The first mounting structure 16 is used to cooperate with a second mounting structure (not shown in the figure) on the movement 12 of the electric toothbrush 100. The cooperation relationship between the second mounting structure and the first mounting structure 16 includes at least one of snap-on, mutual limiting, mutual fixing and mutual guiding.

[0068] When the second mounting structure and the first mounting structure 16 are engaged, mutually limited or mutually fixed, the movement 12 can be stably installed in the handle shell 11. When the second mounting structure and the first mounting structure 16 are mutually guided, the movement 12 can be guided and positioned during the installation of the movement 12 in the handle shell 11, so that the movement 12 can be quickly installed in the handle shell 11, thereby improving the installation efficiency.

[0069] In some embodiments, the contour lines of the inner wall of the metal segment 14 and the contour lines of the inner wall of the connecting portion 15 are both non-standard circles. In this way, the metal segment 14 can prevent the connecting portion 15 from rotating in the circumferential direction of the handle shell 11, and the connecting portion 15 can prevent the movement 12 from rotating in the circumferential direction of the handle shell 11, thereby improving the stability of the metal segment 14, the connecting portion 15 and the movement 12 in the circumferential direction of the handle shell 11.

[0070] In some embodiments, the inner wall surface of the metal segment 14 is a smooth wall surface, and the connecting portion 15 is fixed to the smooth wall surface by an injection molding process. In this way, the inner wall of the metal segment 14 does not need to be machined to open holes or form structures such as protrusions, and the process is simpler. In addition, the connecting portion 15 is fixed to the smooth wall surface by an injection molding process, which can increase the contact area and connection tightness between the connecting portion 15 and the inner wall of the metal segment 14, and improve the connection stability between the connecting portion 15 and the inner wall of the metal segment 14.

[0071] See also Figure 5 In some embodiments, the connecting portion 15 is formed on the inner wall of the metal segment 14 through an injection molding process and is integrally formed with the plastic segment 13. In this embodiment, the connecting portion 15, the lining 133 and the outer shell 132 are all light-transmitting parts. After the metal segment 14 is formed, the connecting portion 15, the lining 133 and the outer shell 132 can be simultaneously molded in a one-time injection molding process, and the connecting portion 15 is formed on the inner wall of the metal segment 14. In this way, the injection molding process is simpler, and the connection stability between the metal segment 14 and the connecting portion 15, between the connecting portion 15 and the lining 133, and between the lining 133 and the outer shell 132 is better.

[0072] In other embodiments, the metal segment 14 and the connecting portion 15 are separate components, the metal segment 14 is assembled to the connecting portion 15, and the connecting portion 15 is integrally formed with the plastic segment 13. In this embodiment, the connecting portion 15, the lining 133 and the outer shell 132 are all light-transmitting parts, and the connecting portion 15, the lining 133 and the outer shell 132 can be simultaneously formed in a one-time injection molding process. The metal segment 14 can also be formed independently, and the manufacture of the metal segment 14 is more flexible. The metal segment 14 is sleeved outside the connecting portion 15 and fixedly connected to the connecting portion 15 through a dispensing process.

[0073] See also Figure 5In some embodiments, a first guide portion 161 is provided on the inner wall of the plastic segment 13. The first guide portion 161 may be, for example, a slide groove (or a slide rail). The first guide portion 161 is used to slide with a second guide portion (not shown in the figure, the second guide portion may be a slide rail that cooperates with the slide groove, or a slide groove that cooperates with the slide rail) on the movement 12 of the electric toothbrush 100. In this way, during the process of installing the movement 12 into the handle shell 11, the movement 12 can be guided and positioned, thereby realizing rapid installation of the movement 12 in the handle shell 11 and improving installation efficiency.

[0074] See also Figure 5 Furthermore, the first guide portion 161, the light-transmitting portion 131, and the button 134 are located on different sides of the plastic segment 13 in the circumferential direction. For example, the light-transmitting portion 131 is located on the front side of the plastic segment 13, and the first guide portion 161 is located on at least one side of the left side, the right side, and the rear side of the plastic segment 13. In this way, the first guide portion 161 is prevented from blocking the light-transmitting portion 131 and the button 134, and the first guide portion 161 is prevented from being disconnected at the light-transmitting portion 131 and the button 134 in order for the first guide portion 161 to avoid the light-transmitting portion 131 and the button 134.

[0075] See also Figure 2 In some embodiments, the metal segment 14 has a key area 141 (eg Figure 2 The thickness of the key area 141 is less than the thickness of other positions of the metal segment 14. Thus, by reducing the metal thickness at the key area 141, the key area 141 is more likely to deform when pressed by the user, and the deformation is larger, so that the deformation of the key area 141 is more easily sensed by the light detection sensor of the internal movement 12, thereby triggering the corresponding control function.

[0076] Please continue reading Figure 2 In some embodiments, the surface of the plastic segment 13 and the surface of the metal segment 14 are smoothly transitioned. In this way, on the one hand, it is possible to avoid the connection between the plastic segment 13 and the metal segment 14 being uncomfortable to touch; on the other hand, it is possible to avoid the connection between the plastic segment 13 and the metal segment 14 having a connection seam or a step structure, thereby avoiding the problem of dirt and grime being trapped in the connection seam or the step structure.

[0077] Please continue reading Figure 2 In some embodiments, there are two metal segments 14, and the two metal segments 14 are respectively arranged on opposite sides of the plastic segment 13 along the length direction of the handle shell 11, that is, both ends of the plastic segment 13 are supported by the two metal segments 14, so that the plastic segment 13 is more stable on the handle shell 11, and due to the presence of the two metal segments 14, the overall structural strength of the handle shell 11 can be improved.

[0078] See also Figure 4In some embodiments, the two metal segments 14 are respectively a first metal segment 14A and a second metal segment 14B. The first metal segment 14A is disposed close to the brush head 20 of the electric toothbrush 100, and the second metal segment 14B is disposed away from the brush head 20. The length L1 of the first metal segment 14A is less than the length L2 of the plastic segment 13, and the length L2 of the plastic segment 13 is less than the length L3 of the second metal segment 14B. In this way, the lengths of the first metal segment 14A, the plastic segment 13, and the second metal segment 14B are appropriately distributed, so that the first metal segment 14A and the plastic segment 13 are located in the upper half of the handle shell 11, which is convenient for the first metal segment 14A to be connected to the brush head 20, and for the user to observe the light-transmitting portion 131 on the plastic segment 13, and the second metal segment 14B is located in the lower half of the handle shell 11, with sufficient length for the user to achieve stable grip.

[0079] In some embodiments, the length L1 of the first metal segment 14A is not less than 10 mm, so that the first metal segment 14A is long enough and has sufficient structural strength to support the plastic segment 13 and connect with the brush head 20. The length L2 of the plastic segment 13 is not less than 30 mm, so that the plastic segment 13 is long enough to set a light-transmitting portion 131 with a large enough area. The length L3 of the second metal segment 14B is not less than 40 mm, so that the gripping section 1115 is long enough for the user to grip and avoid the user gripping the plastic segment 13. And the total length of the handle shell 11 is greater than 100 mm. In this way, the lengths of the first metal segment 14A, the plastic segment 13 and the second metal segment 14B are appropriately distributed, so that the first metal segment 14A and the plastic segment 13 are located in the upper half of the handle shell 11, which facilitates the connection between the first metal segment 14A and the brush head 20 and the user's observation of the light-transmitting portion 131 of the plastic segment 13, and the second metal segment 14B is located in the lower half of the handle shell 11, with sufficient length for the user to achieve a stable grip.

[0080] The same or similar numbers in the drawings of this embodiment correspond to the same or similar items; in the description of this application, it should be understood that if the terms "upper", "lower", "left", "right", etc. indicate an orientation or position relationship based on the orientation or position relationship shown in the drawings, it is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0081] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A handle for an electric toothbrush, characterized in that: The handle comprises: A handle shell, comprising a plastic section and a metal section, wherein at least the outer shell portion of the plastic section is a plastic part or the entire section is a plastic part, and the plastic section comprises a light-transmitting portion; the metal section is connected to the plastic section along the length direction of the handle shell, and at least the outer shell portion of the metal section is a metal part or the entire section is a metal part; and The movement is arranged in the handle shell and connected to at least one of the plastic segment and the metal segment. The movement includes a light-emitting component, and the light-emitting component is arranged corresponding to the light-transmitting portion.

2. The handle according to claim 1, characterized in that: The plastic segment comprises: A housing, wherein the housing is a light-transmitting plastic part; and Liner; arranged on the inner wall of the shell, the liner is a non-light-transmitting plastic part or a non-light-transmitting metal part, and the liner has an inner light-transmitting hole, and the inner light-transmitting hole and the area of ​​the shell corresponding to the inner light-transmitting hole constitute the light-transmitting part.

3. The handle according to claim 2, characterized in that: The outer shell is formed on the surface of the inner lining by an injection molding process, and the outer shell extends into the inner light-transmitting hole.

4. The handle according to claim 1, characterized in that: The plastic segment comprises: The shell is a non-light-transmitting plastic part and has an external light-transmitting hole. The lining is a light-transmitting plastic part, which is arranged on the inner wall of the shell, and the part of the lining extending into the outer light-transmitting hole constitutes the light-transmitting part.

5. The handle according to any one of claims 2 to 4, characterized in that: The outer shell is disposed around the inner liner, and / or the outer shell and the inner liner are both plastic parts and are integrally formed.

6. The handle according to any one of claims 2 to 4, characterized in that: The plastic segment also includes: The button, the shell has a first button hole, the lining has a second button hole, the first button hole corresponds to the second button hole, the button is arranged in the first button hole and connected to the shell, and at least the part connected to the shell is a soft rubber part.

7. The handle according to claim 1, characterized in that: The handle housing also includes: The connecting portion extends from the plastic segment into the metal segment and is connected to the inner wall of the metal segment.

8. The handle according to claim 7, characterized in that: The connecting portion extends to an end of the metal segment facing away from the plastic segment.

9. The handle according to claim 7, characterized in that: The thickness of the connecting portion is greater than the thickness of the metal segment.

10. The handle according to claim 7, characterized in that: The thickness of the connecting portion is not less than 0.6 mm and not more than 2.5 mm, and the thickness of the metal segment is not less than 0.3 mm and not more than 1.2 mm.

11. The handle according to claim 7, characterized in that: A first mounting structure is provided on the plastic segment and / or the connecting portion, and the first mounting structure is used to cooperate with a second mounting structure on the movement of the electric toothbrush, and the cooperation relationship between the second mounting structure and the first mounting structure includes at least one of snap-on, mutual limiting, mutual fixing and mutual guiding.

12. The handle according to claim 7, characterized in that: The contour lines of the inner wall of the metal segment and the inner wall of the connecting portion are both non-standard circles, or the inner wall surface of the metal segment is a smooth wall surface, and the connecting portion is fixed to the smooth wall surface by an injection molding process.

13. The handle according to claim 7, characterized in that: The connecting portion is formed on the inner wall of the metal segment by an injection molding process and is integrally formed with the plastic segment; or, the metal segment and the connecting portion are separate components, the metal segment is assembled to the connecting portion, and the connecting portion and the plastic segment are integrally formed.

14. The handle according to claim 1, characterized in that A first guide portion is provided on the inner wall of the plastic segment, and the first guide portion is used for slidingly cooperating with a second guide portion on the movement of the electric toothbrush. The first guide portion and the light-transmitting portion are located on different sides of the plastic segment in the circumferential direction.

15. The handle according to claim 1, characterized in that The metal segment has a key area, and the thickness of the key area is smaller than the thickness of other positions of the metal segment.

16. The handle according to claim 1, characterized in that The surface of the plastic segment and the surface of the metal segment are in smooth transition.

17. The handle according to any one of claims 1-4, 7-16, characterized in that: The number of the metal segments is two, and the two metal segments are respectively arranged on two opposite sides of the plastic segment along the length direction of the handle shell.

18. The handle according to claim 17, characterized in that The two metal segments are respectively a first metal segment and a second metal segment. The first metal segment is arranged close to the brush head of the electric toothbrush, and the second metal segment is arranged away from the brush head. The length of the first metal segment is smaller than the length of the plastic segment, and the length of the plastic segment is smaller than the length of the second metal segment.

19. The handle according to claim 18, characterized in that The length of the first metal segment is not less than 10 mm, the length of the plastic segment is not less than 30 mm, the length of the second metal segment is not less than 40 mm, and the total length of the handle shell is greater than 100 mm.

20. An electric toothbrush, characterized in that: include: A handle as claimed in any one of claims 1 to 19; as well as A brush head is detachably connected to the handle.

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