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 and a driving unit. The shell is provided with a handle part, a neck part and a head part which are sequentially arranged. The brush head base is arranged on the head and used for being connected with the brush head assembly. The driving unit is arranged in the shell and is in driving connection with the brush head seat so as to drive the brush head seat to move relative to the shell. Along the axis direction of the brush head seat, the height of the head part is H, a plane perpendicular to the axis direction and located at the 1 / 2H position of the head part is defined as a reference plane, and the intersection point of the axis of the handle part and the axis of the brush head seat is located on the side, close to the brush head assembly, of the reference plane. When a user holds the handle part of the electric brush handle, the user does not feel tired after holding the handle part for a long time when using the electric brush, and the electric brush is more convenient to use.

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 while using it. However, existing electric brushes often cause hand fatigue after prolonged use. Utility Model Content

[0003] The purpose of this application is to provide an electric brush handle and an electric brush that can reduce hand fatigue after prolonged use, making cleaning more effortless.

[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. The housing has a handle portion, a neck, and a head arranged sequentially. The brush head holder is disposed on the head and is used to connect a brush head assembly. The drive unit is disposed within the housing and drives the brush head holder to move relative to the housing. Along the axial direction of the brush head holder, the height of the head is H. A reference plane is defined as the plane perpendicular to the axial direction and located at 1 / 2H of the head. The intersection of the axis of the handle portion and the axis of the brush head holder is located on the side of the reference plane closer to the brush head assembly.

[0005] In the above technical solution, the drive unit drives the brush head holder to move, and the brush head holder then drives the brush head assembly to move together, thereby achieving cleaning. When the user uses it, they hold the handle. Since the intersection of the axis of the handle and the axis of the brush head holder is located on the side of the reference plane closer to the brush head assembly, the force from the user's arm can be more easily transmitted to the brush head assembly when using the electric brush, so as to clean the dirt under the brush head assembly. Even with long-term use, it is not easy to tire the hand, and cleaning is more effortless.

[0006] In conjunction with the first aspect, in some alternative embodiments, the angle between the axis of the handle portion and the axis of the brush head base is 10° to 80°.

[0007] In the above technical solution, the included angle between the axis of the handle and the axis of the brush head base is within the above range. When the user holds the handle for use, it is convenient to hold the handle and apply force. It is not easy to tire the hand during long-term use, and cleaning is more labor-saving.

[0008] In conjunction with the first aspect, in some alternative embodiments, the angle between the axis of the handle portion and the axis of the brush head base is 30° to 60°.

[0009] In conjunction with the first aspect, in some alternative embodiments, the housing further includes a cover disposed on the head, the cover having an opposing 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; a brush head seat is located within the first receiving cavity; the brush head seat is used to connect a brush head assembly from the open end side; the intersection of the axis of the handle portion and the axis of the brush head seat is located within the first receiving cavity.

[0010] In the above technical solution, the open end of the first receiving cavity can be used to insert the brush head holder into the first receiving cavity. Since the intersection of the axis of the handle and the rotation axis of the brush head holder is located in the first receiving cavity, and the brush head holder 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, resulting in a better cleaning effect. Furthermore, the shape of the electric brush handle is ergonomic, so it is not easy to tire the hand even after long-term use.

[0011] In conjunction with the first aspect, in some alternative embodiments, the brush head holder includes a bell-shaped structure having a second receiving cavity inside and an opening at the bottom communicating with the second receiving cavity for inserting the brush head assembly into the second receiving cavity. The intersection of the axis of the handle portion and the axis of the brush head holder is located within the second receiving cavity.

[0012] In the above technical solution, the brush head assembly can be connected to the brush head base by extending into the second receiving cavity through the opening. This connection method allows for direct insertion of the brush head assembly into the second receiving cavity, making operation convenient. Furthermore, the intersection of the axes of the brush head base and the handle is located within the second receiving cavity. After the brush head assembly is installed in the second receiving cavity, this intersection point is located on the brush head assembly during electric brush use. This allows the user's arm to easily transfer and concentrate force onto the brush head assembly, making cleaning more effortless.

[0013] In conjunction with the first aspect, in some alternative embodiments, the second receiving cavity is provided with a first connector for connecting to the brush head assembly. The first connector is a magnet or ferromagnetic structure for magnetically and detachably connecting to the brush head assembly.

[0014] In the above technical solution, the brush head assembly is detachably mounted in the second receiving cavity via magnetic attraction, facilitating its removal and replacement to adapt to different cleaning scenarios. The magnetic attraction method enables detachable connection, resulting in a simple structure that simplifies the design of the electric brush handle and brush head assembly.

[0015] In conjunction with the first aspect, in some alternative embodiments, a transmission unit is also included, comprising a drive shaft disposed at the neck and a gear set disposed at the head; the drive shaft is connected to the output shaft of the drive unit; the gear set includes a first gear and a second gear meshing with each other, the first gear being connected to the drive shaft and the gear shaft of the second gear being connected to the brush head seat to drive the brush head seat to move.

[0016] 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 gear drive rotation method also has less noise.

[0017] In conjunction with the first aspect, in some alternative implementations, both the first gear and the second gear are bevel gears; the first gear is positioned toward the side of the cover, 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 to connect to the brush head seat.

[0018] In the above technical solution, by using the method of setting the first gear towards the side of the cover and the second gear towards the closed end of the cover, the internal structure of the electric brush handle head can be made more compact, thereby making the size of the electric brush handle head position smaller.

[0019] In conjunction with the first aspect, in some alternative implementations, a transmission unit is also included, which is a cam mechanism. The cam mechanism 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.

[0020] 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.

[0021] 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.

[0022] 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.

[0023] In conjunction with the first aspect, in some alternative embodiments, a transmission unit is also included, comprising 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.

[0024] 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.

[0025] In conjunction with the first aspect, in some alternative embodiments, the brush head base has opposing mounting and connecting sides along the axial direction of the brush head base; the mounting side is used to connect the brush head assembly, and the connecting side is used to connect the drive unit; the head is tilted relative to the neck in a direction away from the mounting side.

[0026] In the above technical solution, because the head of the outer shell is tilted away from the installation side relative to the neck, the head of the outer shell is tilted upwards. When the user cleans a narrow space, the entire head, along with the brush head assembly connected to the brush head holder, can be inserted into the narrow space for cleaning. In addition, because the head is tilted upwards, the user's hands do not need to be lowered or raised as the narrow space is cleaned, making the operation more convenient.

[0027] Secondly, embodiments of this application provide an electric brush, including the electric brush handle provided in the first aspect, a brush head assembly connected to a brush head seat, the brush head assembly having a cleaning part, and the intersection of the axis of the handle part and the axis of the brush head seat located in the brush head assembly. Attached Figure Description

[0028] 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.

[0029] Figure 1 A schematic diagram of an electric brush provided in an embodiment of this application from a first-view perspective;

[0030] Figure 2 A schematic diagram of an electric brush provided in an embodiment of this application from a second perspective;

[0031] Figure 3 A cross-sectional view of the electric brush handle provided in an embodiment of this application;

[0032] Figure 4 A cross-sectional view of the head of an electric brush handle provided in an embodiment of this application;

[0033] Figure 5 A schematic diagram showing the angle between the handle axis and the head axis of the electric brush handle provided in this embodiment of the application;

[0034] Figure 6 A schematic diagram of a housing provided according to an embodiment of this application;

[0035] Figure 7 A cross-sectional view of the head of the housing provided in an embodiment of this application;

[0036] Figure 8 A cross-sectional view of the head of an electric brush provided in an embodiment of this application;

[0037] Figure 9 This is a cross-sectional view of a brush head assembly provided in an embodiment of this application;

[0038] Figure 10 A cross-sectional view of the head of an electric brush provided in another embodiment of this application;

[0039] Figure 11 for Figure 10 A cross-sectional view of the brush head assembly provided in the embodiment;

[0040] Figure 12 A schematic diagram illustrating an embodiment of this application of an electric brush employing cam drive;

[0041] Figure 13 A cross-sectional view of an electric brush using cam drive, provided in an embodiment of this application;

[0042] Figure 14A schematic diagram of the internal components of an electric brush handle employing universal joint drive, provided as an embodiment of this application;

[0043] Figure 15 A longitudinal sectional view of an electric brush handle employing a universal joint drive, provided as an embodiment of this application;

[0044] Figure 16 This is a cross-sectional view of the head position of an electric brush handle that uses a universal joint for transmission, provided as an embodiment of this application.

[0045] Icons: 100-Electric brush handle; 111-Head; 112-Neck; 113-Handle section; 120-Shell body; 130-Cover; 131-First receiving cavity; 132-Closed end; 133-Open end; 134-Top plate; 135-Transition section; 136-Surrounding plate; 140-Brush head holder; 141-Second receiving cavity; 142-Bell-shaped structure; 143-First connector; 150-Transmission unit; 151-First gear; 152-Second 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; 200-Brush head assembly; 210-Cleaning section; 220-Mounting section; 230-Connecting section; 231-Second connector. Detailed Implementation

[0046] 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.

[0047] 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.

[0048] 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.

[0049] 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.

[0050] 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.

[0051] 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.

[0052] In the prior art, the head of a small electric brush is equipped with a brush head holder, which is used to connect the brush head. The intersection of the axis of the brush head holder and the axis of the handle is usually located above the head of the brush head (the side of the head away from the brush head assembly). When the user holds the handle of the electric brush, the force is directly transmitted to this intersection point, that is, to the area of ​​the head away from the brush head assembly. The force also needs to be indirectly transmitted to the brush head assembly through the brush head holder. The transmission distance of this force is relatively long. Therefore, it is not easy for the user to use, and it is easy to tire the hand after a long period of use.

[0053] Based on this, the inventors of this application provide an electric brush, such as Figure 1 and Figure 2 As shown, the electric brush includes an electric brush handle 100 and a brush head assembly 200 connected to the electric brush handle 100. The brush head assembly 200 has a cleaning section 210, which is used to directly contact dirt. The cleaning section 210 can be bristles, a brush cloth, etc., and different types of cleaning sections 210 can be used for different cleaning scenarios.

[0054] In one embodiment provided in this application, the electric brush handle 100 includes a housing, a brush head holder 140, and a drive unit 160. The housing is located outside the electric brush handle 100 and is a structure that does not rotate during user use. Figure 3 As shown, the housing has a handle portion 113, a neck portion 112, and a head portion 111 arranged sequentially. The handle portion 113 is for the user to grip, and the head portion 111 is for connecting the brush head assembly 200. The head of the electric brush includes the head of the electric brush handle 100, which in turn includes the head of the housing. A brush head holder 140 is disposed on the head portion 111 and is used to connect the brush head assembly 200. A drive unit 160 is disposed within the housing and is used to drive the brush head holder 140 to move, which in turn drives the brush head assembly 200 to move together.

[0055] Please refer to Figures 4 to 6 Along the axial direction of the brush head holder 140, the height of the head 111 is H. The plane perpendicular to the axial direction of the brush head holder 140 and located at 1 / 2H of the head 111 is defined as the reference plane A (in...). Figure 4 From the perspective shown, reference plane A is a straight line, that is Figure 4 As shown by the dashed line A), the intersection point B of the axis of the handle portion 113 and the axis of the brush head seat 140 is located on the side of the reference plane closer to the brush head assembly 200. The axis of the brush head seat 140 is its axis of rotation, and 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; further, the axis of the handle portion 113 can be a straight line connecting the portions of the handle portion 113 with equal cross-sectional sizes; in this application, the cross-section of the handle portion 113 is the cross-section of the handle portion 113 in the direction perpendicular to the head 111 towards the handle portion 113. In some embodiments, the axis of the handle portion 113 can also be a straight line connecting the geometric centers of the cross-sections at two locations within the handle portion 113.

[0056] The electric brush handle 100 provided in the above embodiment is ergonomic. When the user uses the electric brush, the force on the arm can be more easily transmitted to the brush head assembly 200 so as to clean the dirt under the brush head assembly 200. Even after long-term use, it is not easy to tire the hand and cleaning is more labor-saving.

[0057] Furthermore, intersection point B can be located on reference plane A, or it can be located on... Figure 4 The positions shown are B' and B”.

[0058] In some embodiments, the angle α between the axis of the handle portion 113 and the axis of the brush head base 140 is 10° to 80°; further, it can be 30° to 60°, specifically 30°, 45°, 60°, etc. In this embodiment, the angle range between the axis of the handle portion 113 and the axis of the brush head base 140 is reasonable, making it convenient for the user to grip the handle portion 113 and apply force when using it, and reducing hand fatigue during prolonged use. In other embodiments, the angle α can also be 10°, 20°, 70°, or 80°, or it can be between 10° and 30°, or between 60° and 80°.

[0059] Please refer to Figures 3 to 7 As shown, the outer casing also includes a cover 130 disposed on the head 111. The cover 130 has an opening end 133 and a closed end 132, and the cover 130 has a first receiving cavity 131 inside. The cover 130 is connected to the head 111, and the closed end 132 is recessed into the interior of the head 111. The brush head holder 140 is located inside the first receiving cavity 131. The brush head holder 140 is used to connect the brush head assembly 200 from the opening end 133 side. 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 brush head holder 140 can be inserted into the first receiving cavity 131 through the opening end 133. Furthermore, the intersection of the axis of the handle portion 113 and the axis of the brush head holder 140 is located inside the first receiving cavity 131. Therefore, when cleaning, the force applied by the user can be more easily concentrated on the brush head assembly 200, resulting in a better cleaning effect. Furthermore, the shape of the electric brush handle 100 is ergonomic, so it is not easy to tire the hand even after long-term use, making cleaning more effortless.

[0060] Furthermore, in such Figure 7In the illustrated embodiment, the cover 130 includes a top plate 134, a transition section 135 with an increasing diameter, and a surrounding plate 136 arranged sequentially from the closed end 132 to the open end 133. The top plate 134 is located at the closed end 132, and the open end 133 is located at the end of the surrounding plate 136 away from the transition section 135. The outer shell includes a shell body 120, which extends through a head 111, a neck 112, and a handle portion 113. The surrounding plate 136 is connected to the shell body 120 at the head 111, specifically, it can be integrally formed. Since the closed end 132 of the cover 130 is recessed into the shell body 120 at the head 111, the top plate 134 is located inside the shell body 120. In this embodiment, the top plate 134, the transition section 135, and the surrounding plate 136 form a first receiving cavity 131. The lower end of the surrounding plate 136 is an opening 133 that connects to the first receiving cavity 131. The cover 130 has a uniform wall thickness. Furthermore, a through hole can be provided in the top plate 134 for connecting the drive unit 160 to the brush head holder 140.

[0061] In some implementations, such as Figures 3 to 5 As 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 intersection of the axis of the handle portion 113 and the axis of the brush head holder 140 is located within the second receiving cavity 141. In this embodiment, the brush head assembly 200 can be directly inserted into the second receiving cavity 141 for connection, making operation convenient. Furthermore, since the intersection of the axes of the brush head holder 140 and the handle portion 113 is located within the second receiving cavity 141, after the brush head assembly 200 is installed in the second receiving cavity 141, this intersection point is located on the brush head assembly 200 during the use of the electric brush. This allows the user's arm to directly transmit and concentrate force on the brush head assembly 200, making cleaning easier and more effortless.

[0062] Furthermore, the second receiving cavity 141 is provided with a first connector 143 for connecting to the brush head assembly 200, for magnetically and detachably connecting to the brush head assembly 200. For example... Figure 8 and Figure 9As shown, 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 may be a magnet, and the other may be a ferromagnetic structural component. For example, the first connector 143 may be a magnet, and the second connector 231 may be an iron, cobalt, or nickel structural component; alternatively, both the first connector 143 and the second connector 231 may 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, which makes it easy to assemble and disassemble the brush head assembly 200.

[0063] In other embodiments, the brush head holder 140 may not include the second receiving cavity 141, and the brush head holder 140 may be connected to the brush head assembly 200 by inserting the brush head holder 140 into the brush head assembly 200. For example... Figure 10 and Figure 11 In the illustrated embodiment, the mounting portion 220 of the brush head assembly 200 has a recessed groove facing the cleaning portion 210 on the side facing the brush head base 140, and the connecting portion 230 is disposed within the groove. That is, the cleaning portion 210 is disposed on one side of the mounting portion 220, and the connecting portion 230 is disposed on the other side of the mounting portion 220. In this embodiment, the brush head base 140 is inserted into the groove of the brush head assembly 200 to achieve connection with the connecting portion 230. The lower end of the brush head base 140 may extend out of the first receiving cavity 131 or may not extend out of the first receiving cavity 131. The connection method between the brush head base 140 and the connecting portion 230 can be plug-in or snap-fit. In some embodiments, the brush head base 140 and the connecting portion 230 can also be magnetically connected. For example, the lower end of the brush head base 140 is provided with a first magnetic element, and the connecting portion 230 in the groove is provided with a second magnetic element. At least one of the first magnetic element and the second magnetic element is a magnet, and the other is a ferromagnetic structural element or a magnet.

[0064] Furthermore, a transmission unit 150 is also provided inside the electric brush handle 100. Figure 8 and Figure 10In the illustrated embodiment, the transmission unit 150 includes a transmission shaft 153 disposed on the neck 112 and a gear set disposed on the head 111; the transmission shaft 153 is connected to the output shaft of the drive unit 160; the gear set includes a first gear 151 and a second gear 152 meshing with each other, the first gear 151 being connected to the transmission shaft 153, and the gear shaft 1521 of the second gear 152 being connected to the brush head holder 140 to drive the brush head holder 140 to move. Using a gear drive to rotate the brush head holder 140 reduces vibration during use, making it more comfortable for the user to hold, and also improves the problem of cleaning fluid splashing. Furthermore, the gear drive rotation method produces less noise. In other embodiments, cams and universal joints can also be used to drive the brush head holder 140 to rotate.

[0065] Furthermore, in Figure 8 In the illustrated embodiment, both the first gear 151 and the second gear 152 are bevel gears. The first gear 151 is disposed facing the side of the cover 130, wherein the side of the cover 130 is the outer side located between the open end 133 and the closed end 132. The second gear 152 is disposed facing the closed end 132 of the cover 130, and the gear shaft 1521 of the second gear 152 passes through the closed end 132 and connects to the brush head holder 140. Figure 8 In this embodiment, the positions of the first gear 151 and the second 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 head of the electric brush handle 100 smaller in size, which can be used to clean narrow gaps.

[0066] In other embodiments, the transmission unit 150 can also be a cam mechanism. In this application, a cam mechanism refers to a kinematic pair between two moving mechanisms, where the driving element is a cam, and the driven element 155 is connected to the driving element in a transmission manner; that is, if the kinematic pair between the driving element and the driven element 155 is a cam pair, then the driving element and the driven element 155 form a cam mechanism. The driving element is connected to the drive unit 160, and the driven element 155 is connected to the brush head holder 140, thereby driving the brush head holder 140 to oscillate via the drive unit 160 and the transmission unit 150. Figure 12 and Figure 13In 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 distance. 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.

[0067] In other embodiments, the transmission unit 150 may also employ a universal joint to achieve transmission, such as... Figures 14 to 16 In the illustrated embodiment, 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 operating, the first transmission member 1561 moves around its own axis, and the second transmission member 1562 also moves around its own axis via 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 14 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.

[0068] Furthermore, in the embodiment where the transmission unit 150 employs a universal joint structure, the end of the brush head holder 140 used for mounting the brush head assembly 200 protrudes with a 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 used 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 in the brush head assembly 200). Accordingly, a groove recessed towards the cleaning portion 210 is provided on the side of the mounting portion 220 of the brush head assembly 200 facing the brush head holder 140, and 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 holder 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 force applied by the user during cleaning to be more easily concentrated on the brush head assembly 200, resulting in better cleaning effect. It also makes the electric brush handle 100 ergonomic, so that the hand is not easily tired even after long-term use.

[0069] In other embodiments, such as Figure 10 In the embodiment where the transmission unit 150 drives the brush head seat 140 to rotate via gear transmission, the end of the brush head seat 140 for mounting the brush head assembly 200 can also protrude a head 111, and the connection with the connecting part 230 can be achieved by inserting the area of ​​the protruding head 111 of the brush head seat 140 into the groove of the brush head assembly 200.

[0070] In some embodiments, along the axial direction of the brush head holder 140, the brush head holder 140 has opposing mounting and connecting sides, wherein the mounting side is used to connect the brush head assembly 200, and the connecting side is used to connect the drive unit 160; the head 111 is tilted relative to the neck 112 in a direction away from the mounting side. Figure 5 and Figure 8 In this embodiment, the head 111 of the electric brush is upturned. When cleaning a narrow space, the entire head 111, along with the brush head assembly 200 connected to the brush head holder 140 attached to the head 111, can be inserted into the narrow space for cleaning. Furthermore, because the head 111 is upturned, the user does not need to lower or raise their hand while cleaning the narrow space, making operation more convenient. In other embodiments, the head 111 of the electric brush handle 100 may not be upturned relative to the handle portion 113, and the electric brush handle 100 may extend approximately in a straight line from the handle portion 113 of the housing towards the head 111.

[0071] 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.

[0072] The electric brush provided in this application embodiment includes a housing, a transmission unit 150, a brush head holder 140, and a brush head assembly 200. The housing has a handle portion 113, a neck portion 112, and a head portion 111 arranged sequentially. A cover 130 is disposed on the head portion 111. The cover 130 has an open end 133 and a closed end 132 opposite to each other, and a first receiving cavity 131 is provided inside the cover 130. The closed end 132 of the cover 130 is recessed into the interior of the head portion 111, and the side of the cover 130 is located between the open end 133 and the closed end 132. The transmission unit 150 is disposed inside the head portion 111. The first gear 151 of the transmission unit 150 is disposed facing the side of the cover 130, and the second gear 152 of the transmission unit 150 is disposed facing the closed end 132 of the cover 130. The brush head holder 140 is rotatably connected to the cover 130. The brush head holder 140 is located in the first receiving cavity 131 of the cover 130 and is connected to the second gear 152 so as to rotate synchronously with the second gear 152. By driving the brush head holder 140 to rotate through the gear connection, the electric brush can have weak vibration and low noise when in use. The brush head holder 140 is a bell-shaped structure 142. The interior of the bell-shaped structure 142 has a second receiving cavity 141 and an opening at the lower end that communicates with the second receiving cavity 141. A magnet connected to the bell-shaped structure is disposed inside the second receiving cavity 141. The brush head assembly 200 includes a mounting part 220 and a connecting part 230 and a cleaning part 210 located on both sides of the mounting part 220. By providing different cleaning parts 210 on the mounting part 220 (e.g., brushes of different lengths and sizes, or cloth brushes, etc.), different parts can be cleaned. Another magnet is disposed on the connecting part 230. The connecting part 230 of the brush head assembly 200 extends into the second receiving cavity 141 from the opening and is magnetically connected to the magnet in the second receiving cavity 141. Furthermore, the intersection of the axis of the handle portion 113 and the axis of the brush head holder 140 is located inside the second receiving cavity 141. After the brush head assembly 200 is installed in the second receiving cavity 141, when the electric brush is used, this intersection is located on the brush head assembly 200, so that the user's arm can directly transmit and concentrate the force on the brush head assembly 200 and use the brush head assembly 200 to clean stains, making cleaning more effortless.

[0073] 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, the brush head holder being used to connect the brush head assembly; A drive unit disposed within the housing drives the brush head holder to move relative to the housing. Along the axial direction of the brush head base, the height of the head is H. A reference plane is defined as the plane that is perpendicular to the axial direction and located at 1 / 2H of the head. The intersection of the axis of the handle portion and the axis of the brush head base is located on the side of the reference plane closer to the brush head assembly.

2. The electric brush handle according to claim 1, characterized in that, The angle between the axis of the handle and the axis of the brush head base is 10° to 80°.

3. The electric brush handle according to claim 2, characterized in that, The angle between the axis of the handle and the axis of the brush head base is 30° to 60°.

4. The electric brush handle according to any one of claims 1 to 3, characterized in that, The outer casing also 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 located in the first receiving cavity; the brush head seat is used to connect the brush head assembly from the open end side. The intersection of the axis of the handle and the axis of the brush head seat is located within the first receiving cavity.

5. The electric brush handle according to claim 4, characterized in that, The brush head holder includes a bell-shaped structure, the interior of which has a second receiving cavity and the lower part has an opening communicating with the second receiving cavity, the opening being used to insert the brush head assembly into the second receiving cavity; The intersection of the axis of the handle and the axis of the brush head seat is located within the second receiving cavity.

6. The electric brush handle according to claim 5, characterized in that, The second receiving cavity is provided with a first connector for connecting to the brush head assembly. The first connector is a magnet or ferromagnetic structural component for magnetically and detachably connecting to the brush head assembly.

7. The electric brush handle according to claim 4, characterized in that, It also includes a transmission unit, which includes a transmission shaft disposed on the neck and a gear set disposed on the head; the transmission shaft is connected to the output shaft of the drive unit; the gear set includes a first gear and a second gear that mesh with each other, the first gear is connected to the transmission shaft and the gear shaft of the second gear is connected to the brush head seat to drive the brush head seat to move.

8. The electric brush handle according to claim 7, characterized in that, Both the first gear and the second gear are bevel gears; the first gear is positioned facing the side of the cover, and the second gear is positioned facing the closed end of the cover, with the gear shaft of the second gear passing through the closed end and connecting to the brush head seat.

9. The electric brush handle according to any one of claims 1 to 3, characterized in that, It also includes a transmission unit, which is a cam mechanism. The cam mechanism 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. 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.

10. The electric brush handle according to any one of claims 1 to 3, 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.

11. The electric brush handle according to claim 10, characterized in that, It also includes a transmission unit, which 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.

12. The electric brush handle according to any one of claims 1 to 3, characterized in that, Along the axial direction of the brush head base, the brush head base has an opposing mounting side and a connecting side; the mounting side is used to connect the brush head assembly, and the connecting side is used to connect the drive unit; the head is tilted relative to the neck in a direction away from the mounting side.

13. An electric brush, characterized in that, The electric brush handle includes any one of claims 1-12, wherein the brush head seat is connected to a brush head assembly, the brush head assembly has a cleaning section, and the intersection of the axis of the handle portion and the axis of the brush head seat is located in the brush head assembly.

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