Electric brush handle and electric brush

Abstract

The utility model provides an electric brush handle and an electric brush, a shell of the electric brush handle is provided with a head part, a neck part and a handle part which are arranged in sequence, the head part and the neck part are provided with first mounting cavities, and the handle part is provided with a second mounting cavity; the shell comprises a shell body and a cover body, the shell body extends from the head part to the handle part, and the shell body is integrally formed; the shell body is provided with a first opening communicated with the first mounting cavity and a second opening communicated with the second mounting cavity, the cover body covers the first opening, and on the cross section of the shell, the outer contour length of the cover body is smaller than that of the shell body. The brush head seat is arranged on one side, opposite to the cover body, of the shell body of the head part; the brush head base is used for being detachably connected with a brush head assembly. The driving unit is arranged in the second mounting cavity through the second opening, the transmission unit is arranged in the first mounting cavity through the first opening, one end of the transmission unit is connected with the driving unit, and the other end of the transmission unit is connected with the brush head seat to drive the brush head seat to move.

Description

Technical Field

[0001] This application relates to the field of electric cleaning tools, and more specifically, to an electric brush handle and an electric brush. Background Technology

[0002] Small electric brushes are typically used for cleaning stovetops, kitchen countertops, tile grout, shoes, etc. Users usually hold the handle of the small electric brush and use it. Different brush heads are usually needed for different cleaning areas (e.g., larger brush heads for gas stove areas; smaller brush heads for tile grout areas; sponge cloths for easily damaged or worn areas). Existing electric brush handles typically use a brush head replacement method similar to electric toothbrushes, where the brush head is replaced at the neck of the handle. Inevitably, the neck of the handle consists of two detachable parts. However, when cleaning stubborn stains, this type of electric brush requires significant force from the user, which can easily lead to breakage at the detachable connection point in the neck. Utility Model Content

[0003] The purpose of this application is to provide an electric brush handle and an electric brush, which have high structural strength and are not easily damaged.

[0004] In a first aspect, embodiments of this application provide an electric brush handle, including a housing, a brush head holder, and a drive unit and a transmission unit connected by transmission. The housing has a head, a neck, and a handle portion arranged sequentially. The head and neck have first mounting cavities, and the handle portion has a second mounting cavity. The housing includes a shell body and a cover. The shell body extends from the head to the handle portion and is integrally formed. The shell body has a first opening communicating with the first mounting cavity and a second opening communicating with the second mounting cavity. The cover covers the first opening. In the cross-section of the housing, the outer contour length of the cover is less than the outer contour length of the shell body. The brush head holder is disposed on the side of the shell body facing away from the cover at the head. The brush head holder is used for detachably connecting a brush head assembly. The drive unit is disposed in the second mounting cavity through the second opening, and the transmission unit is disposed in the first mounting cavity through the first opening. One end of the transmission unit is connected to the drive unit, and the other end is connected to the brush head holder to drive the brush head holder to move.

[0005] In the above technical solution, the brush head holder is installed on the shell body of the head, and the brush head assembly is connected to the brush head holder in a detachable manner. Different brush head assemblies can be replaced at the head of the electric brush handle to meet different cleaning needs. Furthermore, the shell body extends from the head to the handle and is integrally molded, making it a single-piece structure with sufficient strength. The user can grip the handle portion of the shell body during use, and the shell body can withstand the significant force applied by the user when cleaning stubborn stains, making it less prone to breakage. Moreover, in the cross-section of the shell, the outer contour length of the cover is smaller than the outer contour length of the shell body; that is, the circumferential dimension of the shell body is larger, and correspondingly, its strength is also greater, making it less likely for the shell body to be damaged at the neck during user use. In addition, when the electric brush handle is working, the drive unit set in the second mounting cavity drives the brush head seat set on the head to rotate through the transmission unit set in the first mounting cavity. The first opening can be used to install the transmission unit into the first receiving cavity, and the second opening can be used to install the drive unit into the second mounting cavity, which can facilitate the installation of the drive unit and the transmission unit. Then, the cover is used to close the first opening, making the outer shell shape of the electric brush handle more complete.

[0006] In conjunction with the first aspect, in some alternative implementations, the cover extends from the head to the handle portion, and the cover is integrally formed.

[0007] In the above technical solution, the cover extends from the head to the handle, effectively sealing the first opening and reducing the amount of dirt entering the casing through it. It also makes the electric brush handle more aesthetically pleasing. The cover is integrally molded, facilitating installation.

[0008] In conjunction with the first aspect, in some alternative embodiments, the circumferential outer contour length of the neck gradually decreases along the direction from the handle to the head, and the minimum circumferential outer contour length of the neck is 0.3 to 0.6 times the circumferential outer contour length of the handle.

[0009] In the above technical solution, since the minimum circumferential outer contour length of the neck is 0.3 to 0.6 times the circumferential outer contour length of the handle, and the circumferential contour length of the neck gradually decreases along the direction from the handle to the head, the outer side of the shell transitions evenly, making it easier to insert the head and the end of the neck near the head into the narrow slit, and the neck still has a certain structural strength and is not easy to break.

[0010] In conjunction with the first aspect, in some alternative embodiments, the handle portion includes a first end near the neck and a second end away from the neck, a first opening and a cover both extending from the head to the first end, the shell body of the second end being circumferentially closed, and the end of the second end away from the head having a second opening communicating with a second mounting cavity for mounting the drive unit from the second opening into the second mounting cavity.

[0011] In the above technical solution, the first opening is used to install the transmission unit, and the second opening located at the end of the handle is used to install the drive unit. By extending the first opening to the first end of the handle, it is convenient to connect the transmission unit and the drive unit. The second opening for installing the drive unit is located at the end away from the head, thus reducing the possibility of interference between the process of installing the drive unit and the process of installing the transmission unit. The first opening also extends to the head, facilitating the connection between the transmission unit and the brush head holder located on the head. The cover also extends from the head to the first end, better sealing the first opening to reduce the entry of contaminants into the housing through the first opening.

[0012] In conjunction with the first aspect, in some alternative embodiments, at the minimum circumferential outer contour length of the neck, the outer contour length of the cover is 0.2 to 0.5 times the outer contour length of the shell body.

[0013] In the above technical solution, at the minimum circumferential outer contour length of the neck, the outer contour length of the cover is 0.2 to 0.5 times the outer contour length of the shell body, resulting in a larger shell body size while maintaining sufficient strength at the neck, making it less prone to breakage. Furthermore, it does not affect the installation of the transmission unit, which can still be easily installed into the first mounting cavity through the first opening below the cover.

[0014] In conjunction with the first aspect, in some alternative embodiments, the cover at the neck is the same width as the cover at the handle portion along the axial direction of the housing.

[0015] In the above technical solution, the width of the cover at the neck is the same as that at the handle, which makes the structure of the cover simple and aesthetically pleasing.

[0016] In conjunction with the first aspect, in some alternative embodiments, the outer contour curvature of the cover at the neck and the cover at the handle are consistent along the axial direction of the housing.

[0017] In conjunction with the first aspect, in some alternative embodiments, the cover extends from the head to the end of the handle portion opposite to the head, and the cover and the shell body form a first mounting cavity and a second mounting cavity.

[0018] In the above technical solution, the cover and the shell body together form the first mounting cavity and the second mounting cavity, which can reduce the difficulty of processing and manufacturing the shell body, thereby reducing production costs.

[0019] In conjunction with the first aspect, in some alternative embodiments, at the circumferential cross-section of the outer shell, the outer contour length of the cover is 0.3 to 0.49 times the outer contour length of the shell body.

[0020] In the above technical solution, both the first mounting cavity and the second mounting cavity are surrounded by a cover and a shell body, which facilitates the installation of the internal drive unit and transmission unit, and also facilitates the processing and manufacturing of the shell. Furthermore, at the circumferential cross-section of the shell, the outer contour length of the cover is 0.3 to 0.49 times the outer contour length of the shell body, and the relative size of the shell body is relatively large, so it still has a certain strength and is not easy to break.

[0021] In conjunction with the first aspect, in some alternative embodiments, the housing further includes a cover body connected to the head and integrally formed with the housing body; the cover body has opposing open ends and closed ends, and the cover body has a first receiving cavity inside; the closed end of the cover body is recessed toward the cover body; a brush head seat is disposed in the first receiving cavity, and the open end of the cover body is used to insert the brush head seat into the first receiving cavity; a transmission unit is connected to the brush head seat from the closed end.

[0022] In the above technical solution, the cover is recessed into the interior of the shell body, and the brush head holder is disposed in the first receiving cavity inside the cover body, which can reduce the size of the head and therefore can be used for cleaning small spaces such as narrow crevices. The brush head holder can be inserted into the first receiving cavity through the open end of the cover body, making installation relatively convenient.

[0023] In conjunction with the first aspect, in some alternative embodiments, the side of the cover is located between the open end and the closed end; the transmission unit includes a drive shaft disposed at the neck and a gear set connected to one end of the drive shaft, the other end of the drive shaft being connected to a drive unit; the gear set includes a first bevel gear facing the side of the cover and a second bevel gear disposed facing the closed end of the cover, the first bevel gear being connected to the other end of the drive shaft, and the gear shaft of the second bevel gear passing through the closed end into the first receiving cavity to connect to the brush head seat.

[0024] In the above technical solution, the brush head holder is driven to rotate via gear transmission, resulting in less vibration and noise during use. Furthermore, the arrangement of the first gear facing the side of the cover and the second gear facing the closed end of the cover allows for a more compact structure within the head of the electric brush handle, thus reducing the size of the brush head area. This makes it suitable for cleaning narrow spaces such as crevices.

[0025] In conjunction with the first aspect, in some alternative embodiments, a pressure plate is also included, which is located inside the housing and connected to the housing body; both the first bevel gear and the second bevel gear are located between the pressure plate and the housing body, and the two ends of the gear shaft of the second bevel gear are respectively disposed on the pressure plate and the brush head seat.

[0026] In the above technical solution, a pressure plate can be used to fix the first bevel gear, the second bevel gear, and the drive shaft. The cover plate mainly serves to seal the shell body, protect the internal structure, and prevent external water, stains, etc. from entering the interior of the shell.

[0027] In conjunction with the first aspect, in some alternative implementations, the transmission unit is a cam mechanism, which includes a driving member and a driven member that are connected in a transmission manner. The driving member is connected to a drive unit to drive the driving member to rotate, and the driven member is connected to a brush head seat. The electric brush handle is configured such that the drive unit drives the driving member to rotate, which in turn drives the brush head seat to oscillate via the transmission unit.

[0028] In the above technical solution, a cam mechanism can be used to drive the brush head seat, thereby driving the brush head assembly to clean in a swinging manner.

[0029] In conjunction with the first aspect, in some alternative embodiments, the transmission unit includes a first transmission member and a second transmission member connected by a universal joint, the first transmission member being connected to the drive unit and disposed at the neck, and the second transmission member being disposed at the head and connected to the brush head seat to drive the brush head seat to move.

[0030] In the above technical solution, a universal joint transmission method can be used to drive the brush head seat, thereby driving the brush head assembly to move for cleaning.

[0031] Secondly, embodiments of this application provide an electric brush, including the electric brush handle provided in the first aspect, and a brush head assembly; the brush head assembly includes a mounting portion, a cleaning portion disposed on one side of the mounting portion, and a connecting portion disposed on the other side of the mounting portion; the connecting portion is detachably connected to the brush head base.

[0032] In conjunction with the second aspect, in some embodiments, a first connector is provided inside the brush head holder, and a second connector is provided at the connecting part; one of the first connector and the second connector is a magnet and the other is a ferromagnetic structural component, or both the first connector and the second connector are magnets.

[0033] In the above technical solution, the brush head assembly and the brush head base are connected by magnetic attraction, which makes it convenient to disassemble and assemble the brush head assembly, so that the corresponding brush head assembly can be replaced according to different cleaning needs.

[0034] In conjunction with the second aspect, in some embodiments, the connecting part and the brush head base are detachably connected by plugging or snapping. Attached Figure Description

[0035] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 A schematic diagram of an electric brush provided in an embodiment of this application from a first-view perspective;

[0037] Figure 2 A schematic diagram of an electric brush provided in an embodiment of this application from a second perspective;

[0038] Figure 3 A cross-sectional view of the electric brush handle provided in an embodiment of this application;

[0039] Figure 4 A cross-sectional view of the housing provided in an embodiment of this application;

[0040] Figure 5 A schematic diagram of the shell body provided in an embodiment of this application;

[0041] Figure 6 A cross-sectional view of the neck of the electric brush handle provided in an embodiment of this application;

[0042] Figure 7 A cross-sectional view of the head and neck of an electric brush handle provided in an embodiment of this application;

[0043] Figure 8 This is a schematic diagram of the electric brush handle after the cover has been removed, as provided in an embodiment of this application.

[0044] Figure 9 for Figure 8 A schematic diagram showing the electric brush handle after the pressure plate has been removed;

[0045] Figure 10 This is a schematic diagram of the head of an electric brush using cam drive in an embodiment of this application;

[0046] Figure 11 This is a cross-sectional view of an electric brush using cam drive in an embodiment of this application;

[0047] Figure 12 This is a cross-sectional view of an electric brush using universal joint drive in an embodiment of this application;

[0048] Figure 13 A cross-sectional view of the head and neck of the electric hand provided in an embodiment of this application;

[0049] Figure 14 This is a schematic diagram of a brush head assembly provided in one embodiment of this application;

[0050] Figure 15 A schematic diagram of a brush head assembly provided in another embodiment of this application;

[0051] Figure 16 This is a schematic diagram showing the cover and the shell body together forming the first mounting cavity and the second mounting cavity.

[0052] Icons: 100-Electric brush handle; 111-Head; 112-Neck; 113-Handle section; 120-Shell body; 121-First opening; 122-Second opening; 123-First mounting cavity; 124-Second mounting cavity; 130-Cover; 131-First receiving cavity; 132-Closed end; 133-Open end; 140-Brush head holder; 141-Second receiving cavity; 143-First connector; 150-Transmission unit; 151-First cone Gear; 152-Second bevel gear; 1521-Gear shaft; 153-Drive shaft; 1541-First section; 1542-Second section; 155-Driven component; 1561-First transmission component; 1562-Second transmission component; 160-Drive unit; 171-Cover; 172-Pressure plate; 173-End cap; 180-Battery; 200-Brush head assembly; 210-Cleaning section; 220-Mounting section; 230-Connecting section; 231-Second connecting component. Detailed Implementation

[0053] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0054] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0055] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0056] In the description of this application, it should be noted that the terms "center," "upper," "lower," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. In addition, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0057] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0058] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0059] This application provides an embodiment of an electric brush, such as... Figure 1 and Figure 2 As shown, the present invention includes an electric brush handle 100 and a brush head assembly 200 mounted on the electric brush handle 100. The electric brush handle 100 provided in this application has high strength and is not easily damaged during use.

[0060] like Figures 1 to 3 As shown, the electric brush handle 100 includes a housing, a brush head holder 140, and a drive unit 160 and a transmission unit 150 connected by a transmission mechanism. The housing is the visible outer structure for the user to hold. The brush head holder 140 is used to detachably connect the brush head assembly 200. One end of the transmission unit 150 is connected to the drive unit 160, and the other end is connected to the brush head holder 140 to drive the brush head holder 140 to move. When the electric brush provided in this application is working, the drive unit 160 drives the brush head holder 140 to move through the transmission unit 150, and the brush head assembly 200 moves together with the brush head holder 140 to perform cleaning. Figures 3 to 5 As shown, the housing has a head 111, a neck 112, and a handle 113 arranged sequentially. The head 111 and neck 112 have a first mounting cavity 123, and the handle 113 has a second mounting cavity 124. The first mounting cavity 123 is used to mount a transmission unit 150, and the second mounting cavity 124 is used to mount a drive unit 160. The housing includes a housing body 120 and a cover 171. The housing body 120 has a first opening 121 communicating with the first mounting cavity 123 for mounting the transmission unit 150, and a second opening 122 communicating with the second mounting cavity 124 for mounting the drive unit 160. The cover 171 closes to the first opening 121 to prevent dirt from entering the first mounting cavity 123.

[0061] The brush head holder 140 is located on the side of the housing body 120 of the head 111 facing away from the cover 171; wherein, the housing body 120 of the head 111 refers to the portion of the housing body 120 located at the position of the head 111. The brush head holder 140 is used to detachably connect the brush head assembly 200. The brush head holder 140 is installed at the housing body 120 of the head 111 and connects the brush head assembly 200 to the brush head holder 140 in a detachable manner. Different brush head assemblies 200 can be replaced at the head 111 of the electric brush handle 100 to meet different cleaning needs.

[0062] Since the brush head holder 140 is located on the side of the housing body 120 facing away from the cover 171, and the cover 171 closes the first opening 121 for inserting the transmission unit 150, the process of inserting the transmission unit 150 is less likely to interfere with the process of inserting the brush head assembly 200. Furthermore, the brush head assembly 200 is detachably connected to the housing body 120 of the head 111. The brush head assembly 200 can be replaced in the head 111 area of ​​the electric brush handle 100, eliminating the need to replace it in the neck area of ​​the electric brush handle 100. This allows the housing body of the head 111, neck 112, and handle 113 to be integrally molded, increasing the strength of the electric brush handle 100.

[0063] Furthermore, since the brush head assembly 200 is replaced by the shell body 120 of the head 111, the shell body 120 can extend from the head 111 to the handle portion 113 and be integrally formed. The shell body 120 is a single-piece structure with sufficient strength, allowing the user to grip the shell body 120 of the handle portion 113 during use. The shell body 120 can withstand the significant force applied by the user when cleaning stubborn stains and is not prone to breakage. Additionally, in the cross-section of the outer shell, the outer contour length of the cover 171 is less than the outer contour length of the shell body 120. Here, the cross-section is the section perpendicular to the handle portion 113 towards the head 111; the outer contour length is the outer perimeter of the cross-section; the outer contour length of the cover 171 is the length of the cross-sectional shape of the outer shell comprised of the cover 171; and the outer contour length of the shell body 120 is the length of the cross-sectional shape of the outer shell comprised of the shell body 120. This allows the shell body 120 to have a larger circumferential dimension (compared to the cover 171), and correspondingly, its strength is also greater, making it less likely to be damaged during user use.

[0064] In this application, "the shell body 120 is integrally formed" does not mean that the shell body 120 of the head 111, the shell body 120 of the neck 112, and the shell body 120 of the handle 113 cannot have any connection points, but rather that there are no detachable connection points. Fixed connections (e.g., welding) are included within the scope of protection of this application.

[0065] In some implementations, such as Figure 1 , Figure 2 and Figure 5 As shown, the cover 171 also extends from the head 111 to the handle portion 113, effectively covering the first opening 121, thereby reducing dirt entering the housing through the first opening 121 and making the electric brush handle 100 more aesthetically pleasing. Furthermore, the cover 171 can be a one-piece molded structure for ease of installation. In other embodiments, the cover 171 may simply extend from the head 111 to the neck 112; the cover 171 may also be composed of multiple parts joined together.

[0066] In some embodiments, the circumferential outer contour length of the neck 112 gradually decreases along the direction from the handle portion 113 to the head 111. The minimum circumferential outer contour length of the neck 112 is 0.3 to 0.6 times the circumferential outer contour length of the handle portion 113, specifically 0.3, 0.4, 0.5, or 0.6 times. In this application, the circumferential outer contour length is also the length of the outer contour of the cross-section. Since the minimum circumferential outer contour length of the neck 112 is 0.3 to 0.6 times the circumferential outer contour length of the handle portion 113, and the circumferential contour length of the neck 112 gradually decreases along the direction from the handle portion 113 to the head 111, the outer surface of the outer shell transitions evenly. Therefore, the size of the neck 112 is relatively small, making it easier to insert the head 111 and the end of the neck 112 near the head 111 into the narrow slit, while the neck 112 still has a certain structural strength and is not easily broken.

[0067] In some other embodiments, the circumferential outer contour length of the neck 112 along the direction from the handle portion 113 to the head 111 may also be fixed and kept at 0.3 to 0.6 times the circumferential outer contour length of the handle portion 113.

[0068] exist Figure 1 , Figures 3 to 5In the illustrated embodiment, the handle portion 113 includes a first end near the neck 112 and a second end away from the neck 112. A first opening 121 and a cover 171 both extend from the head 111 to the first end to facilitate the insertion of the transmission unit 150 into the neck 112 and the head 111. The shell body 120 at the second end is circumferentially closed, and the end of the second end away from the head 111 has a second opening 122 communicating with a second mounting cavity 124. The second opening 122 is used to insert the drive unit 160 into the second mounting cavity 124. Here, the shell body at the first end refers to the portion of the shell body located at the first end, and the shell body at the second end refers to the portion of the shell body located at the second end. Further, an end cap 173 can be provided at the second opening 122 of the handle portion 113 to close the second opening 122. Since the second opening 122 for inserting the drive unit 160 is located at the end away from the head 111, the second opening 122 is far from the first opening 121, which can reduce the possibility of interference between the process of inserting the drive unit 160 and the process of inserting the transmission unit 150.

[0069] In other embodiments, the first opening 121 may extend from the head 111 to the first end, and the cover plate may extend from the head 111 to the first end and then continue to the second end. That is, in the direction from the head 111 to the handle portion 113, the size of the cover plate is larger than the size of the first opening 121.

[0070] exist Figures 3 to 5 In the illustrated embodiment, the shell body 120 is the main structure of the outer casing, used to install the drive unit 160 and the transmission unit 150. The cover 171 is used to cover the first opening 121, allowing the user to use the... Figure 3 When the electric brush of the electric brush handle 100 shown is cleaning, the force is mainly borne by the housing body 120. Since the housing body 120 is a one-piece molded structure, it has high strength and is not prone to breakage at the connection between the handle part 113 and the neck 112.

[0071] Furthermore, in some implementations, such as Figure 6As shown, at the minimum circumferential outer contour length of the neck 112, the outer contour length of the cover 171 is 0.2 to 0.5 times the outer contour length of the shell body 120, specifically 0.2, 0.3, 0.4, or 0.5 times. At the minimum circumferential outer contour length of the neck 112, the absolute size of the shell body 120 is correspondingly smaller. Since the outer contour length of the cover 171 is 0.2 to 0.5 times the outer contour length of the shell body 120 at this position, the relative size of the shell body 120 remains relatively large, and the shell body 120 at the neck 112 still possesses a certain strength, making it less prone to breakage. Furthermore, the size of the first opening 121 below the cover 171 is suitable and will not affect the installation of the transmission unit 150. The transmission unit 150 can still be easily installed into the first mounting cavity 123 through the first opening 121 below the cover 171.

[0072] Furthermore, in Figure 1 In the illustrated embodiment, along the axial direction of the outer casing (i.e., the direction from the head 111 to the handle portion 113), the width D1 of the cover 171 at the neck 112 is the same as the width D2 of the cover 171 at the handle portion 113; that is, the width dimension of the cover 171 at the neck 112 is the same as its width dimension at the handle portion 113; that is, the width dimension of the casing remains unchanged in the axial direction of the outer casing. In other embodiments, the width dimension of the casing may gradually increase or gradually decrease in the axial direction of the outer casing.

[0073] Furthermore, in some embodiments, the outer contour curvature of the cover 171 at the neck 112 and the cover 171 at the handle 113 is consistent along the axial direction of the outer casing; that is, the cross-section of the cover 171 at the neck 112 has the same shape as the outer contour of the cross-section at the handle 113. In other embodiments, the outer contour curvature of the cover 171 at the neck 112 and the cover 171 at the handle 113 may not be consistent; that is, the cross-section of the cover 171 at the neck 112 has a different shape than the outer contour of the cross-section at the handle 113.

[0074] In other implementations, such as Figure 16 As shown, the cover 171 can also extend from the head 111 to the end of the handle portion 113 opposite to the head 111, and together with the shell body 120, form the first mounting cavity 123 and the second mounting cavity 124. It is easy to understand that the first opening 121 and the second opening 122 provided on the upper part of the shell body 120 are directly connected to form a single opening, which can jointly mount the transmission unit 150 and the drive unit 160. Compared to... Figure 4 and Figure 5 The embodiment shown, in which the partial shell body 120 and the end cap 173 disposed on the handle portion 113 opposite to the head 111, form a partial second mounting cavity 124, employs... Figure 16 The cover 171 and the shell body 120 together form the first mounting cavity 123 and the second mounting cavity 124, which can reduce the manufacturing difficulty of the shell and thus reduce the production cost.

[0075] Furthermore, such as Figure 16 As shown, in the embodiment where the cover 171 and the shell body 120 together form the first mounting cavity 123 and the second mounting cavity 124, the outer contour length of the cover 171 at the circumferential cross-section of the shell is 0.3 to 0.49 times the outer contour length of the shell body 120, specifically 0.3, 0.35, 0.4, 0.45, or 0.49 times. The ratio of the outer contour length of the cover 171 to the outer contour length of the shell body 120 is within this range, allowing the shell body 120 to be relatively large to have sufficient strength, while also enabling the drive unit 160 and the transmission unit 150 to be inserted from the side of the shell body 120 used to connect the cover 171, making installation relatively convenient. Specifically, the outer contour length of the cover 171 can be 0.3 to 0.49 times the outer contour length of the shell body 120 at any position from the head 111 of the shell towards the handle 113; the outer contour length of the cover 171 can be 0.3 to 0.49 times the outer contour length of the shell body 120 at the head 111 of the shell; the outer contour length of the cover 171 can be 0.3 to 0.49 times the outer contour length of the shell body 120 at the neck 112 of the shell; or the outer contour length of the cover 171 can be 0.3 to 0.49 times the outer contour length of the shell body 120 at the handle 113 of the shell. In this embodiment, the transmission unit 150 and the drive unit 160 can be installed on the housing body 120 from the side of the housing body 120 used to connect the cover 171, and then the housing body 120 and the cover 171 can be connected, instead of first connecting the cover 171 and the housing body 120, and then inserting the drive unit 160 from the end of the handle portion 113 away from the head 111 into the second mounting cavity 124.

[0076] Furthermore, the shell body 120 and the cover body 171 can be connected by snap-fit ​​or fastening, or by welding.

[0077] like Figure 3 , Figure 4 and Figure 5As shown, in some embodiments, the outer shell further includes a cover 130, which is connected to the head 111 and integrally formed with the shell body 120; the cover 130 has an opening end 133 and a closing end 132, and the interior of the cover 130 has a first receiving cavity 131; the closing end 132 of the cover 130 is recessed towards the cover 171; a brush head holder 140 is disposed in the first receiving cavity 131, and the opening end 133 of the cover 130 is used to insert the brush head holder 140 into the first receiving cavity 131; a transmission unit 150 is connected to the brush head holder 140 from the closing end 132. Note that the closing end 132 of the cover 130 does not mean that the closing end 132 is completely closed without any holes, but rather that the closing end 132 cannot allow the brush head holder 140 to pass through. The brush head holder 140 can be inserted into the first receiving cavity 131 through the open end 133. Because the closed end 132 of the cover 130 is recessed towards the cover 171, and the brush head holder 140 is disposed in the first receiving cavity 131, the head of the electric brush handle 100 can be made smaller in the direction of the rotation axis of the brush head holder 140, making it suitable for cleaning narrow crevices. The head of the electric brush handle 100 includes the head 111 of the outer shell.

[0078] Furthermore, in Figures 3 to 5 , Figure 7 In the illustrated embodiment, the side of the cover 130 is located between the open end 133 and the closed end 132. The transmission unit 150 includes a transmission shaft 153 disposed on the neck 112 and a gear set connected to one end of the transmission shaft 153. One end of the transmission shaft 153 is connected to the drive unit 160. The gear set includes a first bevel gear 151 facing the side of the cover 130 and a second bevel gear 152 facing the closed end 132 of the cover 130. The first bevel gear 151 is connected to the other end of the transmission shaft 153, and the gear shaft 1521 of the second bevel gear 152 passes through the closed end 132 into the first receiving cavity 131 and connects to the brush head holder 140. When using the electric cleaning brush provided in this embodiment, the drive unit 160 drives the transmission shaft 153 to rotate, and the transmission shaft 153 then drives the brush head holder 140 to rotate via the gear set, thereby driving the brush head assembly 200 to rotate, achieving cleaning. The vibration and noise generated during use are relatively small. Figure 7 In the provided embodiment, the positions of the first bevel gear 151 and the second bevel gear 152 can be adapted to the structure of the cover 130, which can make the structure inside the head of the electric brush handle 100 more compact, thereby making the size of the head of the electric brush handle 100 smaller, which can be used to clean narrow gaps.

[0079] Furthermore, to facilitate the fixing of the transmission unit 150, a pressure plate 172 is provided for fixing the transmission unit 150 to the housing body 120. Fixing the transmission unit 150 means that the transmission unit 150 can move normally in the mounting position of the neck 112 without leaving the mounting position, so as to drive the brush head holder 140 to rotate; rather than fixing the transmission unit 150 relative to the housing body 120.

[0080] like Figure 3 , Figures 6 to 9 In the illustrated embodiment, the pressure plate 172 is located inside the outer casing and connected to the casing body 120. The first bevel gear 151, the second bevel gear 152, and the drive shaft 153 are all located between the pressure plate 172 and the casing body 120. The two ends of the gear shaft 1521 of the second bevel gear 152 are respectively disposed on the pressure plate 172 and the brush head holder 140. For example, one end of the gear shaft 1521 is rotatable relative to the pressure plate 172, and the other end is fixedly connected to the brush head holder 140, so that the second bevel gear 152 drives the brush head holder 140 to rotate. Furthermore, the cover 171 is disposed on the side of the pressure plate 172 facing away from the transmission unit 150.

[0081] In this application, the drive unit 160 includes a motor and a reduction gear assembly. The output shaft of the motor is connected to the input shaft of the reduction gear assembly, and the output shaft of the reduction gear assembly is connected to one end of the transmission shaft 153. The other end of the transmission shaft 153 is connected to a first bevel gear 151, which meshes with a second bevel gear 152. The gear shaft 1521 of the second bevel gear 152 is connected to the brush head holder 140. Optionally, a battery 180 and a circuit board may also be installed in the second mounting cavity 124 to provide power to the motor and control the rotation of the motor via the circuit board.

[0082] In some other embodiments, the transmission unit 150 may also drive the brush head holder 140 to rotate by means of cam drive or universal joint drive.

[0083] In this application, a cam mechanism refers to a kinematic pair between two kinematic mechanisms, where the driving element is a cam and the driven element is connected to the driving element through a transmission connection; that is, if the kinematic pair between the driving element and the driven element is a cam pair, then the driving element and the driven element constitute a cam mechanism. In some embodiments, the transmission unit 150 is a cam mechanism, which includes a driving element and a driven element that are connected through a transmission connection. The driving element is connected to the drive unit 160 to drive the driving element to rotate, and the driven element is connected to the brush head holder 140. The electric brush handle 100 is configured such that the drive unit 160 drives the driving element to rotate, which in turn drives the brush head holder 140 to oscillate through the transmission unit 150.

[0084] like Figure 10 and Figure 11As shown, the transmission unit 150 uses a cam drive. The driving element is connected to the drive unit 160, and the driven element 155 is connected to the brush head holder 140. The driving element is a rod-shaped structure, specifically including a first segment 1541 and a second segment 1542 connected to each other. The axis of the first segment 1541 is parallel to but not collinear with the axis of the second segment 1542. The first segment 1541 is connected to the drive unit 160 so that the first segment 1541 can rotate around its own axis, while simultaneously driving the second segment 1542 to perform circular motion around the axis of the first segment 1541. The driven member 155 has a notch, with a first surface and a second surface on either side of the notch. The second segment 1542 of the driving member is located within the notch, and during the continuous rotation of the driving member, the second segment 1542 alternately forms a cam pair with the first surface and the second surface. The driving member and the driven member 155, through the cam pair between the second segment 1542 and the first surface, cause the brush head seat 140 to rotate clockwise by a certain angle, and the driving member and the driven member 155, through the cam pair between the second segment 1542 and the second surface, cause the brush head seat 140 to rotate counterclockwise by a certain distance. The cam mechanism enables the brush head seat 140 to oscillate, that is, the brush head seat 140 reciprocates, so that the movement of the brush head assembly 200 during the cleaning process is also oscillating.

[0085] like Figure 12 As shown, the transmission unit 150 employs a universal joint drive. The transmission unit 150 includes a first transmission component 1561 and a second transmission component 1562 connected via a universal joint. The first transmission component 1561 is connected to the drive unit 160 and disposed at the neck 112, while the second transmission component 1562 is disposed at the head 111 and connected to the brush head holder 140 to drive the brush head holder 140 to move. When the drive unit 160 is operating, the first transmission component 1561 moves around its own axis, and the universal joint structure causes the second transmission component 1562 to also move around its own axis, thereby driving the brush head holder 140 to rotate. The use of a universal joint in the transmission unit 150 reduces noise during operation of the electric brush. Furthermore, in Figure 12 In the embodiment shown, the second transmission component 1562 and the brush head holder 140 are integrally formed. In other embodiments, the second transmission component 1562 and the brush head holder 140 may be manufactured separately and then connected.

[0086] In some embodiments of this application, such as Figures 13 to 15 As shown, the brush head assembly 200 includes a mounting portion 220, a cleaning portion 210 disposed on one side of the mounting portion 220, and a connecting portion 230 disposed on the other side of the mounting portion 220; the connecting portion 230 is detachably connected to the brush head holder 140. Because the connecting portion 230 is detachably connected to the brush head holder 140, the brush head assembly 200 can be easily disassembled and replaced to adapt to different cleaning scenarios.

[0087] Furthermore, a first connector 143 can be provided within the brush head holder 140, and a second connector 231 can be provided at the connecting portion 230. One of the first connector 143 and the second connector 231 can be a magnet, and the other a ferromagnetic structural component; alternatively, both the first connector 143 and the second connector 231 can be magnets. The magnetic force between the first connector 143 and the second connector 231 achieves a magnetic connection between the connecting portion 230 of the brush head assembly 200 and the brush head holder 140. This magnetic connection allows for a detachable connection, making it easier to assemble and disassemble the brush head holder 140, facilitating the removal and replacement of the brush head assembly 200 to adapt to different cleaning scenarios. Of course, in other embodiments, the detachable connection between the connecting portion 230 of the brush head assembly 200 and the brush head holder 140 can also be a plug-in or snap-fit ​​connection.

[0088] Furthermore, in some implementations, such as Figure 7 and Figure 13 As shown, the brush head holder 140 is provided with a second receiving cavity 141, and the first connector 143 is disposed in the second receiving cavity 141. The magnetic connection between the connector 230 of the brush head assembly 200 and the brush head holder 140 is achieved by inserting the mounting part 220 of the brush head assembly 200 into the second receiving cavity 141.

[0089] The electric brush provided in this embodiment includes a housing, a brush head holder 140, and a drive unit 160 and a transmission unit 150 connected by a drive unit. The housing has a head 111, a neck 112, and a handle portion 113 arranged sequentially. The head 111 and neck 112 have first mounting cavities 123, and the handle portion 113 has a second mounting cavity 124. The housing includes a housing body 120 and a cover 171. The housing body 120 extends from the head 111 to the handle portion 113 and is integrally formed. The housing body 120 has a first opening 121 communicating with the first mounting cavity 123, and the cover 171 covers the first opening 121. Figure 6As shown, in the cross-section of the outer shell, the outer contour length of the cover 171 is less than the outer contour length of the shell body 120. The brush head holder 140 is disposed on the side of the shell body 120 facing away from the cover 171, near the head 111; the brush head holder 140 is used for detachably connecting the brush head assembly 200. The drive unit 160 is disposed in the second mounting cavity 124, and the transmission unit 150 is disposed in the first mounting cavity 123. One end of the transmission unit 150 is connected to the drive unit 160, and the other end is connected to the brush head holder 140, thereby driving the brush head holder 140 to move. Since the shell body 120 extends from the head 111 to the handle portion 113 and is integrally formed, the shell body 120 is a single structure with a certain strength; and in the cross-section of the outer shell, the outer contour length of the cover 171 is less than the outer contour length of the shell body 120, that is, the shell body 120 is larger in size, and correspondingly, its strength is also greater, making it less prone to damage during user use. The cover 171 extends from the head 111 to the handle portion 113 and is integrally formed. The handle portion 113 includes a first end near the neck 112 and a second end away from the neck 112. Both the first opening 121 and the cover 171 extend from the head 111 to the first end. The shell body 120 at the second end is circumferentially closed. The end of the second end away from the head 111 has a second opening 122, which communicates with a second mounting cavity 124 for mounting the drive unit 160 from the second opening 122 into the second mounting cavity 124. This allows for good strength of the electric brush handle 100 without affecting the installation of the internal drive unit 160 and transmission unit 150.

[0090] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An electric brush handle, characterized in that, include: The outer shell has a head, a neck, and a handle portion arranged sequentially. The head and the neck have first mounting cavities, and the handle portion has a second mounting cavity. The outer shell includes a shell body and a cover body. The shell body extends from the head to the handle portion and is integrally formed. The shell body is provided with a first opening communicating with the first mounting cavity and a second opening communicating with the second mounting cavity. The cover is closed on the first opening. In the cross-section of the shell, the outer contour length of the cover is less than the outer contour length of the shell body. A brush head holder is disposed on the side of the shell body of the head facing away from the cover. The brush head holder is used for detachable connection of the brush head assembly; A drive unit and a transmission unit are connected by a transmission mechanism; the drive unit is disposed in the second mounting cavity through the second opening, and the transmission unit is disposed in the first mounting cavity through the first opening, with one end of the transmission unit connected to the drive unit and the other end connected to the brush head seat to drive the brush head seat to move.

2. The electric brush handle according to claim 1, characterized in that, The cover extends from the head to the handle portion, and the cover is integrally formed.

3. The electric brush handle according to claim 2, characterized in that, Along the direction from the handle to the head, the circumferential outer contour length of the neck gradually decreases, and the minimum circumferential outer contour length of the neck is 0.3 to 0.6 times the circumferential outer contour length of the handle.

4. The electric brush handle according to claim 3, characterized in that, The handle portion includes a first end near the neck and a second end away from the neck, the first opening and the cover both extending from the head to the first end, the shell body of the second end being circumferentially closed, and the end of the second end away from the head having the second opening.

5. The electric brush handle according to claim 4, characterized in that, At the minimum circumferential outer contour length of the neck, the outer contour length of the cover is 0.2 to 0.5 times the outer contour length of the shell body.

6. The electric brush handle according to claim 4, characterized in that, Along the axial direction of the outer casing, the width of the cover at the neck is the same as the width of the cover at the handle.

7. The electric brush handle according to claim 4, characterized in that, Along the axial direction of the outer shell, the outer contour curvature of the cover at the neck and the cover at the handle portion are consistent.

8. The electric brush handle according to claim 2, characterized in that, The cover extends from the head to the end of the handle portion opposite to the head, the cover covering the first opening and the second opening, the cover and the shell body forming the first mounting cavity and the second mounting cavity.

9. The electric brush handle according to claim 8, characterized in that, At the circumferential cross-section of the outer shell, the outer contour length of the cover is 0.3 to 0.49 times the outer contour length of the shell body.

10. The electric brush handle according to any one of claims 1 to 9, characterized in that, The outer shell also includes a cover, which is connected to the head and integrally formed with the shell body; the cover has an open end and a closed end, and the inside of the cover has a first receiving cavity; the closed end of the cover is recessed toward the cover; the brush head seat is disposed in the first receiving cavity, and the open end of the cover is used to insert the brush head seat into the first receiving cavity; the transmission unit is connected to the brush head seat from the closed end.

11. The electric brush handle according to claim 10, characterized in that, The side of the cover is located between the open end and the closed end; the transmission unit includes a transmission shaft disposed on the neck and a gear set connected to one end of the transmission shaft, one end of the transmission shaft being connected to the drive unit; the gear set includes a first bevel gear facing the side of the cover and a second bevel gear disposed facing the closed end of the cover, the first bevel gear being connected to the other end of the transmission shaft, and the gear shaft of the second bevel gear passing through the closed end into the first receiving cavity and connecting to the brush head seat.

12. The electric brush handle according to claim 11, characterized in that, It also includes a pressure plate, which is located inside the housing and connected to the housing body; the first bevel gear and the second bevel gear are both located between the pressure plate and the housing body, and the two ends of the gear shaft of the second bevel gear are respectively disposed on the pressure plate and the brush head seat.

13. The electric brush handle according to any one of claims 1 to 9, characterized in that, The transmission unit is a cam mechanism, which includes a driving member and a driven member that are connected in a transmission manner. The driving member is connected to the drive unit to drive the driving member to rotate, and the driven member is connected to the brush head seat. The electric brush handle is configured such that the drive unit drives the driving member to rotate, and then drives the brush head seat to swing through the transmission unit.

14. The electric brush handle according to any one of claims 1 to 9, characterized in that, The transmission unit includes a first transmission component and a second transmission component connected by a universal joint. The first transmission component is connected to the drive unit and disposed in the neck, and the second transmission component is disposed in the head and connected to the brush head seat to drive the brush head seat to move.

15. An electric brush, characterized in that, The invention includes an electric brush handle as described in any one of claims 1-14, and a brush head assembly; the brush head assembly includes a mounting portion, a cleaning portion disposed on one side of the mounting portion, and a connecting portion disposed on the other side of the mounting portion; the connecting portion is detachably connected to the brush head base.

16. The electric brush according to claim 15, characterized in that, The brush head holder is provided with a first connector, and the connecting part is provided with a second connector; One of the first connector and the second connector is a magnet and the other is a ferromagnetic structural component, or both the first connector and the second connector are magnets.

17. The electric brush according to claim 15, characterized in that, The connecting part is detachably connected to the brush head base by plugging or snapping.

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