Electric brush handle and electric brush

Abstract

The utility model provides an electric brush handle and an electric brush. The electric brush handle comprises a shell, a brush head seat, a driving unit and a transmission unit, wherein the driving unit and the transmission unit are in transmission connection. The shell is provided with a handle part, a neck part and a head part which are sequentially arranged. The brush head seat is arranged on the head part and is provided with a mounting side and a connecting side which are opposite; the mounting side is used for connecting a brush head assembly. The driving unit is arranged on the handle part, the transmission unit is arranged on the neck part and the head part, one end of the transmission unit is connected with the driving unit, and the other end is connected with the connecting side of the brush head seat to drive the brush head seat to move. The head portion is tilted in a direction away from the mounting side relative to the neck portion. The electric brush with the electric brush handle is convenient for cleaning a narrow space.

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 when using it. However, when cleaning narrow crevices, it's inconvenient to insert the brush head into the crevice. Utility Model Content

[0003] The purpose of this application is to provide an electric brush handle and an electric brush for inserting the head into a narrow slit.

[0004] In a first aspect, embodiments of this application provide an electric brush handle, including a housing, a brush head holder, a drive unit, and a transmission unit connected by a transmission mechanism. The housing has a handle portion, a neck, and a head arranged sequentially. The brush head holder is disposed on the head and has a mounting side and a connecting side opposite to each other; the mounting side is used to connect a brush head assembly. The drive unit is disposed on the handle portion, and the transmission unit is disposed on the neck and the head. One end of the transmission unit is connected to the drive unit, and the other end is connected to the connecting side of the brush head holder to drive the brush head holder to move. The head is tilted relative to the neck in a direction away from the mounting side.

[0005] In the above technical solution, the brush head holder serves to mount the brush head assembly, the drive unit provides power, and the transmission unit transmits the power provided by the drive unit to the brush head holder, which then drives the brush head assembly to rotate, thereby achieving cleaning. Because the head of the outer shell is tilted upwards relative to the neck towards the mounting side, the head of the outer shell can be inserted into narrow spaces along with the brush head assembly connected to the head when cleaning them. Furthermore, due to the tilted head, users do not need to lower or raise their hands while cleaning narrow spaces, making operation more convenient.

[0006] In conjunction with the first aspect, in some alternative embodiments, the circumferential profile length of the neck gradually decreases along the direction from the handle to the head, and the minimum circumferential profile length of the neck is 0.3 to 0.6 times the circumferential profile length of the handle.

[0007] In the above technical solution, since the minimum circumferential profile of the neck is 0.3 to 0.6 times that of the circumferential profile of the handle, it is relatively easy to insert the head and the end of the neck near the head into the narrow slit together, and the neck still has a certain structural strength and is not easy to break. Along the direction from the handle to the head, the circumferential profile length of the neck gradually decreases, making the outer surface of the shell transition evenly, making it easier to insert the head and the end of the neck near the head into the narrow slit together.

[0008] In conjunction with the first aspect, in some alternative implementations, the minimum circumferential profile length of the neck is in the range of 45-60 mm; the head dimension in the axial direction of the brush head seat is in the range of 15-30 mm.

[0009] In the above technical solution, the neck and head of the outer shell are relatively small within the above size range, which makes it easier for the head of the outer shell and the neck section near the head to be inserted into the narrow crevices for cleaning.

[0010] In conjunction with the first aspect, in some alternative embodiments, along the direction from the connection side to the mounting side, the head includes an upper side and a lower side disposed opposite to each other; the angle α1 formed by the upper side and the axis of the handle portion is 100° to 170°; the angle α2 formed by the lower side and the axis of the handle portion is 100° to 170°.

[0011] In the above technical solution, the angle formed by the upper and lower sides of the head and the axis of the handle is within the above range, which makes it easier for the user to hold the handle during cleaning. Therefore, the user can better apply force to the head of the outer shell, so that the force can be better transmitted to the brush head assembly to clean the dirt under the brush head assembly. In addition, the shape of the electric brush handle is ergonomic, so it is not easy to tire the hand even after long-term use, and cleaning is more effortless.

[0012] In conjunction with the first aspect, in some alternative embodiments, along the direction from the connecting side to the mounting side, the outer contour of the longitudinal section of the neck includes a first contour line near the connecting side and a second contour line near the mounting side, wherein the obtuse angle α3 formed by the upper side and the first contour line is smaller than the obtuse angle α4 formed by the lower side and the second contour line; wherein the longitudinal section is a section passing through the axis of the brush head seat.

[0013] In the above technical solution, the obtuse angle α3 formed by the upper side and the first contour line is smaller than the obtuse angle α4 formed by the lower side and the second contour line. Combined with the gradual decrease in the circumferential contour length of the neck along the direction from the handle to the head, it is easier to insert the head into the narrow slit and reduce the possibility of the neck hitting the solid part forming the narrow slit and causing damage to the shell.

[0014] In conjunction with the first aspect, in some optional embodiments, the angle α3 formed by the upper side and the first contour line is 100° to 150°, the angle α4 formed by the lower side and the second contour line is 120° to 170°, and the difference between α4 and α3 is 5° to 30°.

[0015] In the above technical solution, the difference between α4 and α3 is within the above range, which makes it easy to insert the head into the narrow slit, reduces the possibility of the neck hitting the solid part that forms the narrow slit and causing damage to the shell, and also makes the size change of the neck more gradual, so that the neck has better strength and is not easily damaged during use.

[0016] In conjunction with the first aspect, in some alternative embodiments, the drive unit includes a motor; the transmission unit includes a drive shaft disposed on the neck and a gear set disposed on the head; the gear set includes a first gear and a second gear meshing with each other, one end of the drive shaft is connected to the output shaft of the motor, the other end is connected to the first gear, and the gear shaft of the second gear is connected to the connecting side of the brush head seat to drive the brush head seat to move.

[0017] In the above technical solution, since the drive shaft and the brush head seat are connected by the first gear and the second gear, that is, the brush head seat is rotated by the gear drive, the vibration generated during use can be reduced, the user can hold it more comfortably, and the problem of cleaning fluid splashing can be improved. In addition, the noise of the gear drive rotation is also smaller.

[0018] In conjunction with the first aspect, in some alternative embodiments, the surface of the first gear facing away from the brush head seat is perpendicular to the axis of the handle portion, and the surface of the second gear facing away from the brush head seat is parallel to the upper or lower side.

[0019] In the above technical solution, the first gear and the second gear are set in the above manner, which makes the layout inside the head more reasonable, improves the space utilization inside the head, and allows the head to be made smaller so as to clean narrow gaps with smaller dimensions.

[0020] In conjunction with the first aspect, in some alternative implementations, the brush head holder is provided with a first connector, which is a magnet or ferromagnetic structure for magnetically and detachably connecting to the brush head assembly.

[0021] In the above technical solution, the brush head holder and the brush head assembly are connected by a detachable connection, which facilitates the removal and replacement of the brush head assembly to adapt to different cleaning scenarios. The use of magnetic attraction for detachable connection results in a simple structure that simplifies the design of the electric brush handle and brush head assembly.

[0022] In conjunction with the first aspect, in some alternative embodiments, the housing includes a cover disposed on the head, the cover having opposing open ends and closed ends, and the cover having a first receiving cavity inside; the cover is connected to the head and the closed end is recessed into the interior of the head; a brush head seat is disposed in the first receiving cavity. Both the first gear and the second gear are bevel gears; the second gear is disposed toward the closed end of the cover, and the gear shaft of the second gear passes through the closed end and connects to the brush head seat.

[0023] In the above technical solution, the open end of the first receiving cavity can be used to install the brush head seat into the first receiving cavity, which can reduce the size of the head position of the electric brush in the axial direction of the brush head seat, thereby making the size of the head position of the electric brush handle smaller, so as to clean narrow spaces.

[0024] In conjunction with the first aspect, in some alternative embodiments, the intersection of the axis of the handle portion and the rotation axis of the brush head seat is located in the first receiving cavity.

[0025] In the above technical solution, since the intersection of the axis of the handle and the rotation axis of the brush head seat is located in the first receiving cavity, and the brush head seat for connecting the brush head assembly is set in the first receiving cavity, the force applied by the user during cleaning can be more easily concentrated on the brush head assembly, so as to clean the dirt under the brush head assembly. Even after long-term use, it is not easy to tire the hand, and cleaning is more labor-saving.

[0026] In conjunction with the first aspect, in some alternative embodiments, the first gear is located on the side of the second gear away from the cover, or on the side of the second gear closer to the cover.

[0027] In conjunction with the first aspect, in some alternative embodiments, the end of the brush head holder for mounting the brush head assembly protrudes from the head. The intersection of the axis of the handle portion and the axis of the brush head holder is located in the area of ​​the protruding head of the brush head holder, or the intersection of the axis of the handle portion and the axis of the brush head holder is located in the area for mounting the brush head assembly.

[0028] In the above technical solution, installation can be achieved between the protruding brush head holder and the brush head assembly, making it easy to observe the installation point and align it for connecting the brush head assembly. The intersection of the axis of the handle and the axis of the brush head holder is located in the area of ​​the protruding head of the brush head holder, or in the area used to install the brush head assembly. This allows the force applied by the user during cleaning to be better concentrated on the brush head assembly, resulting in better cleaning effect. Furthermore, the electric brush handle is ergonomic, reducing hand fatigue even during prolonged use.

[0029] 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.

[0030] In the above technical solution, the brush head holder can be oscillated by a cam mechanism, so that the brush head assembly also oscillates during the cleaning process.

[0031] 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.

[0032] In the above technical solution, the first and second transmission components are connected by a universal joint to realize transmission. This can be applied to situations where the end of the brush head holder used to install the brush head assembly protrudes from the head. Furthermore, the transmission method in the above technical solution is used to realize the rotation of the brush head holder and the brush head assembly, resulting in lower noise during the use of the electric brush.

[0033] Secondly, embodiments of this application provide an electric brush, including the electric brush handle provided in the first aspect, and a brush head assembly connected to a brush head holder. Attached Figure Description

[0034] 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.

[0035] Figure 1 A schematic diagram of an electric brush provided in an embodiment of this application from a first-view perspective;

[0036] Figure 2 A schematic diagram of an electric brush provided in an embodiment of this application from a second perspective;

[0037] Figure 3 A longitudinal sectional view of an electric brush handle provided in an embodiment of this application;

[0038] Figure 4 A longitudinal sectional view of the head and neck of an electric brush handle provided in an embodiment of this application;

[0039] Figure 5 A schematic diagram showing the angles between the upper and lower sides of the head and the axis of the handle, as provided in an embodiment of this application.

[0040] Figure 6 A schematic diagram showing the angles between the first contour line, the second contour line and the axis of the handle portion in the neck section provided for an embodiment of this application;

[0041] Figure 7 A schematic diagram of the shell body provided in an embodiment of this application from a first-view perspective;

[0042] Figure 8 A cross-sectional view of the shell body at the head position of the outer shell, provided for an embodiment of this application;

[0043] Figure 9 A longitudinal sectional view of an electric brush with cam mechanism drive provided in an embodiment of this application;

[0044] Figure 10 for Figure 9 A schematic diagram of the internal structure of the electric brush in the image;

[0045] Figure 11 A schematic diagram of the internal components of an electric brush handle employing universal joint drive, provided as an embodiment of this application;

[0046] Figure 12 A longitudinal sectional view of an electric brush handle employing a universal joint drive, provided as an embodiment of this application;

[0047] Figure 13 A cross-sectional view of an electric brush handle with universal joint transmission provided in an embodiment of this application at the head position;

[0048] Figure 14 This is a schematic diagram of a brush head assembly provided in one embodiment of this application;

[0049] Figure 15 A cross-sectional view of the head of an electric brush with a protruding brush head provided in one embodiment of this application;

[0050] Figure 16 for Figure 4 The diagram shows the electric brush handle connected to the brush head assembly.

[0051] Figure 17 This is a schematic diagram of a brush head assembly provided in another embodiment of this application.

[0052] Icons: 100-Electric brush handle; 111-Head; 1111-Upper side; 1112-Lower side; 112-Neck; 113-Handle section; 120-Outer shell; 130-Cover; 131-First receiving cavity; 132-Closed end; 133-Open end; 140-Brush head holder; 141-Second receiving cavity; 142-Bell-shaped structure; 143-First connector; 144-Mounting side; 145-Connecting side ; 150-Transmission unit; 151-First gear; 152-Second gear; 1521-Gear shaft; 153-Transmission shaft; 1541-First section; 1542-Second section; 155-Driven component; 1561-First transmission component; 1562-Second transmission component; 160-Drive unit; 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] In the prior art, the housing of a small electric brush has a head, a neck and a handle arranged in sequence. The head is connected to a brush head assembly. When using the electric brush, the user holds the handle and extends the head of the electric brush to the target position. The target position is cleaned by the cleaning part (e.g., a brush or cleaning cloth) of the brush head assembly on the head.

[0060] However, existing small electric brushes are inconvenient for cleaning narrow areas. The inventors investigated the reasons and found that the outer shell of existing small electric brushes has a first side near the brush head assembly and a second side away from the brush head assembly. For the second side of the shell, a straight profile is formed from the handle, neck, to the head. When the user holds the handle to clean the target area, the handle is usually higher than the head, and the straight profile of the handle and head causes the head to be in a gradually rising position, making it inconvenient to clean narrow areas. To clean narrow areas, the user needs to lower their hand so that the handle is roughly the same height as their head. However, this cleaning method usually involves prolonged bending, which is inconvenient for the user.

[0061] Based on this, this application provides an electric brush handle and an electric brush, having a raised head that allows the user to easily insert the head into narrow crevices during use. Figure 1 and Figure 2 As shown, the electric brush provided in this application includes an electric brush handle 100 and a brush head assembly 200 mounted on the electric brush handle 100. The electric brush handle 100 includes a housing 120, a brush head holder 140, a drive unit 160 and a transmission unit 150 connected in a transmission manner. The housing 120 is the outer structure that can be seen with the naked eye, for the user to hold, and has a handle portion 113, a neck 112 and a head 111 arranged in sequence.

[0062] like Figures 1 to 4As shown, a brush head holder 140 is disposed on the head 111, and the brush head holder 140 has a mounting side 144 and a connecting side 145 opposite to each other; the mounting side 144 is used to connect the brush head assembly 200. A drive unit 160 is disposed on the handle portion 113, and a transmission unit 150 is disposed on the neck 112 and the head 111, with one end of the transmission unit 150 connected to the drive unit 160 and the other end connected to the connecting side 145 of the brush head holder 140. The head 111 is tilted upward relative to the neck 112 in a direction away from the mounting side 144, causing the head 111 of the housing 120 to tilt upward. Therefore, when the user cleans a narrow space, the entire head 111, together with the brush head assembly 200 connected to the brush head holder 140 on the head 111, can be inserted into the narrow space for cleaning; in addition, because the head 111 is tilted upward, when cleaning a narrow space, the user does not need to lower or raise their hand to clean the narrow space, making the operation more convenient.

[0063] Wherein, "the head 111 tilts upwards relative to the neck 112 in a direction away from the mounting side 144" means: Please refer to Figure 3 and Figure 4 As shown, taking the surface formed by the axis of the handle portion 113 and the axis of the brush head seat 140 as a cross-section, the neck 112 has a section located on the upper side (i.e., Figure 3 The arrow on the right points to the first contour line (upper) and the second contour line (lower). Along the extension direction of the first contour line, a portion of the head 111 lies above the extension direction of the first contour line, as shown below. Figure 4 The upper part of the head is above the dotted line, indicating that the head 111 has an upward-curving structure.

[0064] During use, the electric brush provided in this application uses a drive unit 160 to provide power, and a transmission unit 150 to transmit the power provided by the drive unit 160 to the brush head holder 140, which in turn drives the brush head assembly 200 to rotate, thereby achieving cleaning.

[0065] Furthermore, along the direction from the handle portion 113 to the head 111, the circumferential profile length of the neck 112 gradually decreases, and the minimum circumferential profile length of the neck 112 is 0.3 to 0.6 times the circumferential profile length of the handle portion 113. Specifically, it can be 0.3, 0.4, 0.5, or 0.6 times. Here, the circumferential profile length refers to the outer profile length of the cross-sectional shape, and the cross-section is the section perpendicular to the handle portion 113 towards the head 111. Since the minimum circumferential profile length of the neck 112 is 0.3 to 0.6 times the circumferential profile length of the handle portion 113, it is relatively easy to insert the head 111 and the end of the neck 112 closest to the head 111 into the narrow slit, and the neck 112 still has a certain structural strength and is not easily broken. Along the direction from the handle portion 113 to the head 111, the circumferential profile length of the neck 112 gradually decreases, making the outer surface of the outer shell 120 transition evenly and making it easier to insert the head 111 and the end of the neck 112 near the head 111 into the narrow slit together. The "minimum circumferential profile of the neck 112" refers to: taking cross-sections of different regions of the neck 112 along the extension direction of the outer shell 120, and knowing the length of the circumferential outer profile of each cross-section, finding the cross-section with the smallest circumferential outer profile; the corresponding circumferential profile is the minimum circumferential profile of the neck 112.

[0066] Furthermore, the minimum circumferential profile length of the neck 112 is in the range of 45-60 mm, specifically 45 mm, 50 mm, 55 mm, or 60 mm; for example... Figure 4 As shown, the axial dimension H of the head 111 in the brush head holder 140 is in the range of 15-30 mm, specifically 15 mm, 20 mm, 25 mm, or 30 mm. In this embodiment, the neck 112 of the housing 120 and the head 111 are relatively small in size, which allows the head 111 of the housing 120 and the neck 112 near the head 111 to be easily inserted into narrow crevices for cleaning.

[0067] In some implementations, such as Figure 5As shown, along the direction from the connecting side 145 to the mounting side 144 (that is, the direction of the rotation axis of the brush head holder 140), the head 111 includes an upper side surface 1111 and a lower side surface 1112 disposed opposite to each other; the angle α1 formed by the upper side surface 1111 and the axis of the handle portion 113 is 100° to 170°, specifically 100°, 120°, 135°, 150° or 170°; the angle α2 formed by the lower side surface 1112 and the axis of the handle portion 113 is 100° to 170°, specifically 100°, 120°, 135°, 150° or 170°. The axis of the handle portion 113 can be a straight line connecting the geometric centers of the cross-sectional shapes of the handle portion 113 at different positions; wherein, the axis of the handle portion 113 can be a straight line connecting the parts of the handle portion 113 with equal cross-sectional sizes. In some embodiments, the axis of the handle portion 113 may also be a straight line connecting the geometric centers of the cross-sections at two locations within the handle portion 113. In this embodiment, the handle portion 113 is easier for the user to grip during cleaning, allowing the user to better apply force to the head 111 of the housing 120, thus better transmitting the force to the brush head assembly 200 for cleaning dirt beneath the brush head assembly 200, and reducing hand fatigue even during prolonged use. In other embodiments, the angle α1 formed by the upper side 1111 and the axis of the handle portion 113 may be 90°–100°, or 170°–180°.

[0068] Furthermore, such as Figure 6 As shown, along the direction from the connecting side 145 to the mounting side 144, the outer contour of the longitudinal section of the neck 112 includes a first contour line near the connecting side 145 and a second contour line near the mounting side 144. The obtuse angle α3 formed by the upper side 1111 and the first contour line is smaller than the obtuse angle α4 formed by the lower side 1112 and the second contour line. The longitudinal section is a section passing through the axis of the brush head holder 140 and the axis of the handle portion 113. In this embodiment, the brush head holder 140 is a rotating body, and the axis of the brush head holder 140 coincides with the axis of rotation of the brush head holder 140. Figure 6It is easy to see that since the obtuse angle α3 formed by the upper side 1111 and the first contour line is smaller than the obtuse angle α4 formed by the lower side 1112 and the second contour line, combined with the aforementioned gradual decrease in the circumferential contour length of the neck 112 along the direction from the handle portion 113 to the head 111, and the smaller obtuse angle formed by the upper side 1111 and the first contour line, it indicates that the upper side of the head 111 has a more pronounced warping compared to the lower side of the head 111. This makes it easier to insert the head 111 into the narrow slit, reducing the possibility of the neck 112 colliding with the solid part forming the narrow slit and causing damage to the outer shell 120. In some other embodiments, the obtuse angle α3 formed by the upper side 1111 and the first contour line may be greater than or equal to the obtuse angle α4 formed by the lower side 1112 and the second contour line, still allowing for cleaning of narrow areas.

[0069] Furthermore, the angle α3 formed by the upper side 1111 and the first contour line is 100° to 150°, specifically 100°, 120°, 135°, or 150°. The angle α4 formed by the lower side 1112 and the second contour line is 120° to 170°, specifically 120°, 135°, 150°, or 170°. The difference between α4 and α3 is 5° to 30°, for example, α4 is 5°, 10°, 20°, or 30° larger than α3. In this embodiment, the range of angle α3 is closer to that of angle α1, and the range of angle α4 is closer to that of angle α2, which makes the transition between the neck 112 and the handle 113 smoother and more aesthetically pleasing. The difference between α4 and α3 is within the above range, which makes it easy to insert the head 111 into the narrow slit, reducing the possibility of the neck 112 colliding with the solid part forming the narrow slit and causing damage to the outer shell 120. It also makes the size change of the neck 112 more gradual, so that the neck 112 has better strength and is not easily damaged during use.

[0070] In some implementations, such as Figure 3 and Figure 4As shown, the drive unit 160 includes a motor, and the transmission unit 150 includes a drive shaft 153 disposed on the neck 112 and a gear set disposed on the head 111. The gear set includes a first gear 151 and a second gear 152 meshing with each other. One end of the drive shaft 153 is connected to the output shaft of the motor, and the other end is connected to the first gear 151. The gear shaft 1521 of the second gear 152 is connected to the connecting side 145 of the brush head holder 140 to drive the brush head holder 140 to move. The first gear 151 is disposed on the head 111 near the neck 112, and the second gear 152 is disposed on the head 111 near the upper side 1111. In this embodiment, the drive shaft 153 and the brush head holder 140 are connected by the first gear 151 and the second gear 152. The gear drive method is used to rotate the brush head holder 140, which can reduce the vibration generated during use, make the user's hand more comfortable, improve the problem of cleaning fluid splashing, and reduce the noise of gear drive rotation.

[0071] Please refer to Figure 7 and Figure 8 In some embodiments, the housing 120 includes a cover 130 disposed on the head 111, the cover 130 having an opposing open end 133 and a closed end 132, the cover 130 being connected to the head 111 and the closed end 132 being recessed into the head 111. The cover 130 has a first receiving cavity 131 inside, that is, the cover 130 is recessed into the head 111 to form the first receiving cavity 131; the brush head holder 140 is disposed in the first receiving cavity 131. The closed end 132 of the cover 130 does not mean that the closed end 132 is completely closed without any holes, but rather that the closed end 132 cannot be passed through by the brush head holder 140. The open end 133 of the first receiving cavity 131 can be used to insert the brush head holder 140 into the first receiving cavity 131, which can reduce the size of the head 111 of the electric brush in the axial direction of the brush head holder 140, thereby making the size of the head 111 of the electric brush handle 100 smaller, so as to facilitate cleaning in narrow crevices. The head 111 of the electric brush handle 100 is the position for setting the brush head assembly 200.

[0072] Furthermore, such as Figure 6 and Figure 8 As shown, in some embodiments, the intersection of the axis of the handle portion 113 and the rotation axis of the brush head holder 140 is located in the first receiving cavity 131. Since the brush head holder 140 is provided in the first receiving cavity 131, and the brush head holder 140 is used to install the brush head assembly 200 for cleaning, when the intersection of the axis of the handle portion 113 and the rotation axis of the brush head holder 140 is located in the first receiving cavity 131, the force applied by the user when using the electric brush provided in this application for cleaning can be more easily concentrated on the brush head assembly 200, so as to clean the dirt under the brush head assembly 200, and it is not easy to tire the hand even after long-term use.

[0073] Furthermore, such as Figure 3 , Figure 4 , Figure 7 and Figure 8 As shown, both the first gear 151 and the second gear 152 are bevel gears. The second gear 152 is positioned towards the closed end 132 of the cover 130, and its gear shaft 1521 passes through the closed end 132 to connect to the brush head holder 140. The first gear 151 is located on the side of the second gear 152 closer to the cover 130, such that the first gear 151 is positioned towards the side of the cover 130. The side of the cover 130 is the outer side located between the open end 133 and the closed end 132 of the cover 130. It is easy to see that in this embodiment, the positions of the first gear 151 and the second gear 152 are adapted to the internal structure of the head 111 of the outer casing 120, making the internal structure of the head 111 more compact and allowing for a smaller size, facilitating cleaning within narrow crevices. In other embodiments, the first gear 151 may be located on the side of the second gear 152 away from the cover 130; in this embodiment, the first gear 151 is not positioned towards the side of the cover 130.

[0074] Furthermore, in some embodiments, the surface of the first gear 151 facing away from the brush head holder 140 is perpendicular to the axis of the handle portion 113, and the surface of the second gear 152 facing away from the brush head holder 140 is parallel to the upper side 1111 or the lower side 1112. The upper side 1111 and the lower side 1112 of the head 111 may or may not be parallel to each other. Preferably, the first gear 151 and the second gear 152 are bevel gears. This arrangement of the first gear 151 and the second gear 152 allows for a more rational layout within the head 111, improving space utilization and enabling the head 111 to be made smaller for use in narrow slits.

[0075] Alternatively, in another embodiment, such as Figure 13 As shown, the end of the brush head holder 140 for mounting the brush head assembly 200 protrudes from the head 111. The intersection of the axis of the handle portion 113 and the axis of the brush head holder 140 is located in the area of ​​the protruding head 111 of the brush head holder 140, or, the intersection of the axis of the handle portion 113 and the axis of the brush head holder 140 is located in the area for mounting the brush head assembly 200 (i.e., after mounting the brush head assembly 200, the intersection of the axis of the handle portion 113 and the axis of the brush head holder 140 is located on the brush head assembly 200). Accordingly, as Figure 14As shown, a groove is provided on the side of the mounting portion 220 of the brush head assembly 200 facing the brush head base 140, recessed towards the cleaning portion 210. The connecting portion 230 is disposed in the groove, and is connected to the connecting portion 230 by inserting the area of ​​the protruding head 111 of the brush head base 140 into the groove of the brush head assembly 200. The intersection of the axis of the handle portion 113 and the axis of the brush head base 140 is located in the area of ​​the protruding head 111 of the brush head base 140, or in the area for mounting the brush head assembly 200. This allows the user to more easily concentrate the force applied during cleaning on the brush head assembly 200, so as to clean the dirt under the brush head assembly 200, and it is not easy to tire the hand even after long-term use.

[0076] In embodiments where the transmission unit 150 employs other transmission methods, the end of the brush head holder 140 used for mounting the brush head assembly 200 may also protrude beyond the head 111. For example... Figure 15 In the embodiment shown, the transmission unit 150 adopts gear transmission, including a first gear 151 and a second gear 152 connected by transmission. The first gear 151 is connected to the transmission shaft 153, and the gear shaft 1521 of the second gear 152 is connected to the brush head seat 140. One end of the brush head seat 140 protruding from the head 111 is connected to the brush head assembly 200.

[0077] In some embodiments, the transmission unit 150 may also be a cam mechanism. For example... Figure 10 In this application, a cam mechanism refers to a kinematic pair between two motion mechanisms (i.e., the driving member and the driven member 155) that is a cam pair, wherein the driving member is a cam, and the driven member 155 is rotatably connected to the driving member; that is, the kinematic pair between the driving member and the driven member 155 is a cam pair, and thus the driving member and the driven member 155 form a cam mechanism. The driving member is connected to the drive unit 160, and the driven member 155 is connected to the brush head holder 140, thereby driving the brush head holder 140 to oscillate through the drive unit 160 and the transmission unit 150. Figure 9 and Figure 10In one embodiment shown, the driving member 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 driving unit 160 so that the first segment 1541 can rotate around its own axis, while driving the second segment 1542 to perform circular motion around the axis of the first segment 1541. The driven member 155 has a notch, and the two sides of the notch have opposing first and second surfaces. 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 and second surfaces. 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 angle. The cam mechanism enables the brush head holder 140 to swing, that is, the brush head holder 140 rotates back and forth, so that the movement of the brush head assembly 200 during the cleaning process is also swinging.

[0078] In other embodiments, the transmission unit 150 may also employ a universal joint for transmission. For example... Figures 11 to 13 As shown, the transmission unit 150 includes a first transmission member 1561 and a second transmission member 1562 connected by a universal joint. The first transmission member 1561 is connected to the drive unit 160 and disposed at the neck 112, while the second transmission member 1562 is disposed at the head 111 and connected to the brush head holder 140. When the drive unit 160 is working, the first transmission member 1561 moves around its own axis, and the second transmission member 1562 also moves around its own axis through the universal joint structure, thereby driving the brush head holder 140 to rotate. The transmission unit 150 uses a universal joint for transmission, which reduces noise during the use of the electric brush. Furthermore, in Figure 13 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.

[0079] In some embodiments, the brush head holder 140 is provided with a first connector 143, which is a magnet or ferromagnetic structure for magnetically and detachably connecting to the brush head assembly 200. Furthermore, the brush head assembly 200 has a second connector 231 for magnetically connecting to the first connector 143.

[0080] like Figure 4 , Figure 16 and Figure 17As shown, the brush head holder 140 includes a bell-shaped structure 142. The bell-shaped structure 142 has a second receiving cavity 141 inside and an opening at its lower part communicating with the second receiving cavity 141. The opening is used to insert the brush head assembly 200 into the second receiving cavity 141. The brush head assembly 200 has a connecting portion 230, a mounting portion 220, and a cleaning portion 210 arranged sequentially. That is, in a certain direction, the connecting portion 230 is located on one side of the mounting portion 220, and the cleaning portion 210 is located on the other side of the mounting portion 220, or the mounting portion 220 is located between the connecting portion 230 and the cleaning portion 210. The connecting portion 230 is used to connect the brush head holder 140, and the mounting portion 220 is used to set the connecting portion 230 and the cleaning portion 210. A second connector 231 is provided in the connecting portion 230, and the connecting portion 230 is connected to the brush head holder 140 by magnetic attraction between the first connector 143 and the second connector 231. Specifically, one of the first connector 143 and the second connector 231 can be a magnet, and the other can be a ferromagnetic structural component. For example, the first connector 143 can be a magnet, and the second connector 231 can be an iron, cobalt, or nickel structural component; alternatively, both the first connector 143 and the second connector 231 can be magnets. After the connecting part 230 extends into the second receiving cavity 141, the brush head holder 140 is connected to the brush head assembly 200 by magnetic attraction between the first connector 143 and the second connector 231, which makes it easy to assemble and disassemble the brush head assembly 200. In other embodiments, the first connector 143 and the second connector 231 can also be connected by plug-in, snap-fit, or other connection methods to achieve a detachable connection.

[0081] The electric brush provided in this application embodiment includes a housing 120, a transmission unit 150, a brush head holder 140, and a brush head assembly 200. The housing 120 has a handle portion 113, a neck 112, and a head 111 arranged sequentially. The brush head holder 140 is disposed on the head 111 and has a mounting side 144 and a connecting side 145 opposite to each other; the mounting side 144 is used to connect the brush head assembly 200. A drive unit 160 is disposed on the handle portion 113, and the transmission unit 150 is disposed on the neck 112 and the head 111. One end of the transmission unit 150 is connected to the drive unit 160, and the other end is connected to the connecting side 145 of the brush head holder 140 to drive the brush head holder 140 to move. The head 111 is tilted away from the mounting side 144 relative to the neck 112, so that when the user holds the handle portion 113, the head 111 on which the brush head assembly 200 is disposed can be easily inserted into a narrow gap. Along the direction from the handle portion 113 to the head 111, the circumferential profile length of the neck 112 gradually decreases, and the minimum circumferential profile length of the neck 112 is 0.3 to 0.6 times the circumferential profile length of the handle portion 113. Furthermore, the minimum circumferential profile length of the neck 112 is in the range of 45-60 mm; the axial dimension of the head 111 in the brush head holder 140 is in the range of 15-30 mm. Along the direction from the connecting side 145 to the mounting side 144, the head 111 includes an upper side surface 1111 and a lower side surface 1112 disposed opposite to each other; the angle α1 formed by the upper side surface 1111 and the axis of the handle portion 113 is 100° to 170°; the angle α2 formed by the lower side surface 1112 and the axis of the handle portion 113 is 100° to 170°. Along the direction from the connecting side 145 to the mounting side 144, the outer contour of the longitudinal section of the neck 112 includes a first contour line and a second contour line. The obtuse angle α3 formed by the upper side 1111 and the first contour line is 100° to 150°, and the obtuse angle α4 formed by the lower side 1112 and the second contour line is 120° to 170°, with the difference between α4 and α3 being 5° to 30°. The longitudinal section is the section passing through the axis of the brush head holder 140. The head 111 and the end of the neck 112 closest to the head 111 can be easily inserted into the narrow slit for cleaning narrow areas.

[0082] The above description is merely a preferred embodiment of this application and is 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: A housing having a handle portion, a neck portion, and a head portion arranged sequentially therefrom; A brush head holder is disposed on the head, and the brush head holder has an opposing mounting side and a connecting side; the mounting side is used to connect the brush head assembly. A drive unit and a transmission unit are connected by a transmission mechanism; the drive unit is disposed on the handle, and the transmission unit is disposed on the neck and the head, with one end of the transmission unit connected to the drive unit and the other end connected to the connecting side of the brush head holder to drive the brush head holder to move; The head is tilted relative to the neck in a direction away from the mounting side.

2. The electric brush handle according to claim 1, characterized in that, Along the direction from the handle to the head, the circumferential profile length of the neck gradually decreases, and the minimum circumferential profile length of the neck is 0.3 to 0.6 times the circumferential profile length of the handle.

3. The electric brush handle according to claim 2, characterized in that, The minimum circumferential profile length of the neck is in the range of 45-60 mm; the axial dimension of the head in the brush head seat is in the range of 15-30 mm.

4. The electric brush handle according to claim 1, characterized in that, Along the direction from the connecting side to the mounting side, the head includes an upper side and a lower side disposed opposite to each other; the angle α1 formed by the upper side and the axis of the handle portion is 100° to 170°; the angle α2 formed by the lower side and the axis of the handle portion is 100° to 170°.

5. The electric brush handle according to claim 4, characterized in that, Along the direction from the connecting side to the mounting side, the outer contour of the longitudinal section of the neck includes a first contour line near the connecting side and a second contour line near the mounting side, and the obtuse angle α3 formed by the upper side and the first contour line is smaller than the obtuse angle α4 formed by the lower side and the second contour line; wherein, the longitudinal section is a section passing through the axis of the brush head seat.

6. The electric brush handle according to claim 5, characterized in that, The angle α3 formed by the upper side and the first contour line is 100° to 150°, and the angle α4 formed by the lower side and the second contour line is 120° to 170°, with the difference between α4 and α3 being 5° to 30°.

7. The electric brush handle according to any one of claims 4 to 6, characterized in that, The drive unit includes a motor; the transmission unit includes a drive shaft disposed on the neck and a gear set disposed on the head; the gear set includes a first gear and a second gear meshing with each other, one end of the drive shaft is connected to the output shaft of the motor, the other end is connected to the first gear, and the gear shaft of the second gear is connected to the connecting side of the brush head seat to drive the brush head seat to move.

8. The electric brush handle according to claim 7, characterized in that, The surface of the first gear facing away from the brush head seat is perpendicular to the axis of the handle portion, and the surface of the second gear facing away from the brush head seat is parallel to the upper side or the lower side.

9. The electric brush handle according to claim 7, characterized in that, The brush head holder is provided with a first connector, which is a magnet or ferromagnetic structural component, for magnetically and detachably connecting with the brush head assembly.

10. The electric brush handle according to claim 7, characterized in that, The outer shell includes a cover disposed on the head, the cover having an open end and a closed end, and the cover having a first receiving cavity inside; the cover is connected to the head and the closed end is recessed into the interior of the head; the brush head seat is disposed in the first receiving cavity; Both the first gear and the second gear are bevel gears; the second gear is positioned toward the closed end of the cover, and the gear shaft of the second gear passes through the closed end and connects to the brush head seat.

11. The electric brush handle according to claim 10, characterized in that, The intersection of the axis of the handle and the rotation axis of the brush head seat is located in the first receiving cavity.

12. The electric brush handle according to claim 10, characterized in that, The first gear is located on the side of the second gear away from the cover, or on the side of the second gear close to the cover.

13. The electric brush handle according to any one of claims 1 to 6, characterized in that, The end of the brush head holder for mounting the brush head assembly protrudes from the head; The intersection of the axis of the handle portion and the axis of the brush head base is located in the area of ​​the brush head base that protrudes from the head, or the intersection of the axis of the handle portion and the axis of the brush head base is located in the area for mounting the brush head assembly.

14. The electric brush handle according to any one of claims 1 to 6, 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.

15. The electric brush handle according to any one of claims 1 to 6, 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 on the neck, and the second transmission component is disposed on the head and connected to the brush head seat to drive the brush head seat to move.

16. An electric brush, characterized in that, The electric brush handle includes any one of claims 1-15, wherein the brush head holder is connected to a brush head assembly.

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