CN220024903U - Rolling brush module and floor washing machine - Google Patents

Abstract

The utility model relates to the technical field of floor cleaning equipment, and discloses a rolling brush module, which comprises: the roller part comprises a cylinder body and an electric heating element which is arranged on the cylinder body and used for heating the cylinder body, and the electric heating element is provided with an electric connection end; the rotating shaft supporting part is arranged at the shaft end of the cylinder body and is in pivot connection with the cylinder body; a power supply assembly for electrically connecting the electric heating element and an external power source; the power supply assembly comprises at least two groups of elastic conductive contact parts, wherein the elastic contact point of one group of elastic conductive contact parts is positioned on the upper side of the horizontal central line of the cylinder body, and the elastic contact point of the other group of elastic conductive contact parts is positioned on the lower side of the horizontal central line of the cylinder body. The elastic conductive contact part of the rolling brush module provided by the embodiment of the disclosure can always keep power supply connection to the rolling brush, and reduce the occurrence of abnormal problems such as disconnection of power supply connection. The utility model also discloses a floor washing machine.

Description

Rolling brush module and floor washing machine

Technical Field

The utility model relates to the technical field of ground cleaning equipment, in particular to a rolling brush module and a ground washing machine.

Background

With the continual upgrade of consumer concepts, users' demands for household cleaning products also tend to be diversified and personalized. In terms of floor cleaning products, the traditional manual cleaning modes such as a mop, a broom and the like are gradually changed into the automatic mechanical cleaning modes such as a sweeping robot, a floor washing machine and the like, so that the convenience of life of users is greatly improved, and household cleaning is not a heavy labor burden.

For household handheld floor washing machine products, the cleaning principle is that the motor drives the rolling brush, the roller and other parts to rotate at high speed, and water is sprayed to the rolling brush through the spray head, so that the rolling brush can clean stubborn stains on the ground in a repeated rotating and scrubbing mode. Compared with the traditional manual dragging and washing mode, the cleaning machine has the advantages of being high in cleaning speed, good in cleaning effect, applicable to various stains and the like.

In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:

in order to improve the cleaning efficiency of the rolling brush, electric heating components such as a heating film and a heating wire are additionally arranged in the rolling brush in the related art, and the electric heating components can be used for heating the brushing cloth of the rolling brush to realize the cleaning effect of 'high Wen Caxi'. One problem faced by the application of the electric heating component is how to realize power supply connection, and because the floor washing machine rolling brush needs to rotate at a high speed during working, the situation that the electric wires are wound into clusters along with the rolling brush is easily caused if a wired connection mode is adopted. In addition, when a user operates the household handheld floor washing machine, the floor washing machine is lifted up frequently to change the cleaning position, and the rolling brush slightly descends relative to the floor washing machine body due to the self weight after being lifted up, so that the electric connection is possibly disconnected, and the normal use of the floor washing machine is affected.

It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the utility model and thus may include information that does not form the prior art that is already known to those of ordinary skill in the art.

Disclosure of Invention

The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview, and is intended to neither identify key/critical elements nor delineate the scope of such embodiments, but is intended as a prelude to the more detailed description that follows.

The embodiment of the disclosure provides a rolling brush module and a floor washing machine, which are used for solving the technical problem that in the prior art, the electric heating component of the floor washing machine is likely to be disconnected in power supply under individual conditions.

According to an embodiment of the first aspect of the present utility model, there is provided a roller brush module, including:

the roller part comprises a cylinder body and an electric heating element which is arranged on the cylinder body and used for heating the cylinder body, and the electric heating element is provided with an electric connection end;

the rotating shaft supporting part is arranged at the shaft end of the cylinder body and is in pivot connection with the cylinder body;

a power supply assembly for electrically connecting the electric heating element and an external power source; the power supply assembly comprises at least two groups of elastic conductive contact parts, wherein the elastic contact point of one group of elastic conductive contact parts is positioned on the upper side of the horizontal central line of the cylinder body, and the elastic contact point of the other group of elastic conductive contact parts is positioned on the lower side of the horizontal central line of the cylinder body.

In some alternative embodiments, each resilient conductive contact includes a conductive slip ring and a conductive contact; the conductive slip ring is coaxially arranged on the cylinder body and can synchronously rotate along with the cylinder body; the conductive contact piece is arranged on the rotating shaft supporting part and is in elastic contact with the conductive slip ring through a carbon brush;

the carbon brush of one group of conductive contact piece is abutted against the top edge of the corresponding conductive slip ring, and the carbon brush of the other group of conductive contact piece is abutted against the bottom edge of the corresponding conductive slip ring.

In some alternative embodiments, one set of carbon brushes is abutted against the front half-circumference or the rear half-circumference of the top edge of the conductive slip ring, and one set of carbon brushes is abutted against the rear half-circumference or the front half-circumference of the bottom edge of the conductive slip ring.

In some alternative embodiments, the conductive slip rings of each set of elastic conductive contacts are axially spaced along the barrel;

in the axial direction of the cylinder body, the carbon brush length of each group of elastic conductive contact parts is larger than or equal to the thickness of the conductive slip ring.

In some alternative embodiments, the abutment surface of the carbon brush with the conductive slip ring is configured as an arc shape, and the curvature of the arc shape is adapted to the curvature of the conductive slip ring.

In some alternative embodiments, the rotating shaft supporting part is provided with a cylindrical shaft connecting end, and the shaft connecting end is sleeved at the shaft end of the cylinder and is coaxially arranged with the shaft connecting end;

the first end of the conductive contact piece is in threaded connection with the shaft connection end, the second end extends out of the shaft connection end along the axial direction of the cylinder body and extends towards the conductive slip ring, and the carbon brush is arranged at the second end of the conductive contact piece.

In some alternative embodiments, the rotating shaft supporting part is internally provided with a wiring channel, and the power supply assembly further comprises a power supply connecting wire arranged in the wiring channel, and one end of the power supply connecting wire is electrically connected with the conductive contact.

In some alternative embodiments, the shaft support part further comprises a support handle arranged on one side of the shaft joint end far away from the cylinder;

the wiring channel comprises a first wiring groove extending along the periphery of the shaft joint end, a second wiring groove positioned on the outer side face of the support handle, and a threading hole communicated with the first wiring groove and the second wiring groove.

In some alternative embodiments, the power assembly further comprises an insulating sheet set covering at least a portion of the routing path of the routing channel.

According to an embodiment of the second aspect of the present utility model, there is provided a floor scrubber comprising a scrubber body and a roller brush module as in any of the embodiments of the first aspect.

The rolling brush module and the floor washing machine provided by the embodiment of the disclosure can realize the following technical effects:

the electric heating parts of the rolling brush are connected by the aid of the two groups of elastic conductive contact parts, and the two groups of elastic conductive contact parts are respectively arranged at the upper side and the lower side of the rolling brush cylinder body, so that the elastic deformation range of the elastic conductive contact parts is in the upper and lower directions, the power supply connection of the rolling brush can be always kept under the condition that the rolling brush is displaced up and down relative to the floor cleaning machine body, and abnormal problems such as disconnection of the power supply connection are reduced.

The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the utility model.

Drawings

One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which like reference numerals refer to similar elements, and in which:

FIG. 1 is a schematic diagram of the overall structure of a rolling brush module according to an embodiment of the disclosure;

FIG. 2 is a schematic diagram of an exploded view of a roller brush module according to an embodiment of the disclosure;

FIG. 3 is an axial cross-sectional view of a roll brush module provided in an embodiment of the present disclosure;

FIG. 4 is a schematic view of a drum portion according to an embodiment of the present disclosure;

FIG. 5 is a schematic view of a drum portion according to an embodiment of the present disclosure;

FIG. 6 is a schematic structural view of a motor end cap provided in an embodiment of the present disclosure;

FIG. 7 is a schematic view of a rotary shaft end cap according to an embodiment of the present disclosure;

FIG. 8 is a schematic diagram of an electrothermal element according to an embodiment of the present disclosure;

FIG. 9 is a schematic diagram illustrating the cooperation between a spindle support and a power supply assembly according to an embodiment of the disclosure;

FIG. 10 is a schematic view of a structure of a shaft support according to an embodiment of the present disclosure;

FIG. 11 is a schematic diagram of a power assembly provided in an embodiment of the present disclosure;

FIG. 12 is a schematic view of a conductive slip ring provided in an embodiment of the present disclosure;

FIG. 13 is a schematic diagram of a conductive contact according to an embodiment of the present disclosure;

fig. 14 is a schematic diagram illustrating the cooperation between the shaft support portion and the insulating sheet set according to an embodiment of the disclosure.

Reference numerals:

100. a roller section; 110. a cylinder; 111. an inner cylinder; 112. an outer cylinder; 120. an electric heating element; 121. an electric terminal; 130. a motor end cover; 131. a first fixed key; 132. a first fixing groove; 133. reinforcing rib plates; 134. reinforcing rib plates; 140. a rotating shaft end cover; 141. the clamping bulge; 150. a rotating shaft member; 160. a bearing;

200. a rotation shaft support part; 210. a shaft end; 220. a support handle; 221. a straight shank section; 222. a shank section; 231. a first wiring groove; 232. a second wiring groove;

300. a power supply assembly; 310. a conductive slip ring; 311. a clamping groove; 320. a conductive contact; 321. a carbon brush; 322. a screw; 330. a power supply connection line; 340. an outer contact set; 351. a first insulating sheet; 352. a second insulating sheet; 353. and a third insulating sheet.

Detailed Description

So that the manner in which the features and techniques of the disclosed embodiments can be understood in more detail, a more particular description of the embodiments of the disclosure, briefly summarized below, may be had by reference to the appended drawings, which are not intended to be limiting of the embodiments of the disclosure. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may still be practiced without these details. In other instances, well-known structures and devices may be shown simplified in order to simplify the drawing.

The terms first, second and the like in the description and in the claims of the embodiments of the disclosure and in the above-described figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe embodiments of the present disclosure. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.

In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", and the like indicate an azimuth or a positional relationship based on that shown in the drawings. These terms are used primarily to better describe embodiments of the present disclosure and embodiments thereof and are not intended to limit the indicated device, element, or component to a particular orientation or to be constructed and operated in a particular orientation. Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in the embodiments of the present disclosure will be understood by those of ordinary skill in the art in view of the specific circumstances.

In addition, the terms "disposed," "connected," "secured" and "affixed" are to be construed broadly. For example, "connected" may be in a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. The specific meaning of the above terms in the embodiments of the present disclosure may be understood by those of ordinary skill in the art according to specific circumstances.

The term "and/or" is an associative relationship that describes an object, meaning that there may be three relationships. For example, a and/or B, represent: a or B, or, A and B.

It should be noted that, without conflict, the embodiments of the present disclosure and features of the embodiments may be combined with each other.

As shown in fig. 1-3, embodiments of the present disclosure provide a roller brush module that is removably mountable as a stand-alone, replaceable accessory to a floor scrubber-type product, such as a household hand-held floor scrubber or the like.

Specifically, the rolling brush module includes at least a roller part 100, a rotating shaft supporting part 200 and a power supply assembly 300.

The drum part 100 is a main body part which contacts with the floor to be cleaned and is used for scrubbing and cleaning the floor. The rotation shaft support part 200 is an intermediate member that is fixedly connected to the main body of the floor washing machine as the drum part 100, and the rotation shaft support part 200 is connected to the drum part 100 through a component such as a rotation shaft so that the two can rotate relatively. The power supply unit 300 is a unit for electrically connecting the floor scrubber main body to an electric device inside the roller brush module, such as the electric heating device 120.

In some alternative embodiments, as shown in connection with fig. 4 and 5, the drum portion 100 includes a drum 110 and an electric heating element 120. The electric heating element 120 is disposed on the cylinder 110 and is used for heating the cylinder 110, so as to raise the temperature of the cylinder 110 during cleaning.

Here, the entire outer contour of the cylinder 110 is cylindrical, the inside is hollow, and both ends of the cylinder 110 are in an open form. One of the openings at the two ends of the cylinder 110 is a motor connecting end which is used for driving and connecting with an output shaft of a rolling brush motor on the floor cleaning machine main body, and the rolling brush motor can drive the cylinder 110 to axially rotate around the motor when in operation; the other of the openings at the two ends of the cylinder 110 is a rotating shaft connecting end which is used for being pivotally connected with the rotating shaft supporting part 200, so that when the motor connecting end of the cylinder 110 rotates along with the rolling brush motor, the rotating shaft connecting end can also synchronously rotate along the same direction, and the problems of torsion deformation and the like of the cylinder 110 caused by torsion acting force at one side of the rotating shaft connecting end can be reduced.

Optionally, the cylinder 110 is provided with a cylindrical motor end cover 130 at a motor connection end thereof, and the motor end cover 130 is sleeved on the cylinder 110 and fixedly connected with the cylinder 110. The motor end cover 130 is provided with a shaft hole along the axial direction at the center, and the output shaft of the rolling brush motor extends into the shaft hole and is in driving connection with the motor end cover 130, so that the rolling brush motor can drive the cylinder 110 to rotate through the motor end cover 130.

In an embodiment, as shown in connection with fig. 6, the motor end cap 130 and the motor connection end of the cylinder 110 are fixedly connected through a key slot structure.

Alternatively, the motor end cap 130 is alternately formed with the first fixing key 131 and the first fixing groove 132 on the outer circumferential surface thereof in the circumferential direction thereof, wherein the first fixing groove 132 is concavely formed with respect to the outer circumferential surface of the motor end cap 130, and the first fixing groove 132 extends from a center line of the outer circumferential surface of the motor end cap 130 to an end surface position of the motor end cap 130 toward the cylinder 110. The outer key surface of the first fixing key 131 is level with the outer peripheral surface of the motor end cap 130. Correspondingly, a second fixing key and a second fixing groove are alternately formed on the inner peripheral surface of the motor connecting end of the cylinder 110 along the circumferential direction of the motor connecting end, wherein the second fixing key is matched with the first fixing groove 132 to form a key groove, and the second fixing groove is matched with the first fixing key 131 to form a key groove, so that the connection stability of the motor end cover 130 and the cylinder 110 in the rotating direction can be enhanced through an alternate key groove matching mode, and the conditions of dislocation, slipping and the like are reduced. Here, the second fixing groove is concavely formed with respect to the inner circumferential surface of the cylinder 110, and the second fixing groove is extended from the inner circumferential surface of the cylinder 110 to an end surface position toward the motor end cap 130. The outer key surface of the second fixing key is flush with the inner peripheral surface of the cylinder 110.

Further, the motor end cap 130 is provided with a reinforcing structure in a space between its outer surface and the shaft hole, which can be used to enhance the deformation resistance of the end cap under the action of the torsion force applied by the roll brush motor.

Specifically, as shown in fig. 6, the reinforcing structure includes a reinforcing rib plate 133 having a ring shape, and the ratio of the length between the radius of the reinforcing rib plate 133 and the radius of the motor end cover 130 is about 1/3 to 2/3, preferably, the ratio of the length between the radius of the reinforcing rib plate 133 and the radius of the motor end cover 130 is 1/2. Meanwhile, the reinforcing structure further comprises a plurality of reinforcing ribs 134 which are distributed radially, the plurality of reinforcing ribs 134 are connected between the reinforcing ribs 133 and the outer shell surface of the motor end cover 130, one end of each reinforcing rib is connected with the reinforcing rib 133, and the other end of each reinforcing rib is connected with the outer shell surface. The plurality of reinforcing ribs 134 are uniformly spaced apart along the circumferential direction of the motor end cover 130, so that the stress resistance of the motor end cover 130 in the entire circumferential direction can be improved.

In another alternative, the cylinder 110 is also provided with a cylindrical rotating shaft end cover 140 at the rotating shaft connecting end, and as shown in fig. 5 and 7, the rotating shaft end cover 140 is sleeved on the cylinder 110 and fixedly connected with the cylinder 110. The rotary shaft end cap 140 is provided with a shaft hole at the center thereof in the axial direction, and the cylinder 110 is inserted into the shaft hole through a separate rotary shaft member 150 and coupled to the rotary shaft end cap 140. Here, one end of the shaft member 150 is inserted into the shaft hole of the shaft cover 140, and the other end is inserted into the shaft supporting portion 200 and is pivotally connected to the shaft supporting portion 200 through the bearing 160.

Similar to the mating form of the motor end cap 130 and the barrel 110 in the previous embodiments, the motor connection end of the spindle end cap 140 and the barrel 110 are also fixedly connected by a key slot structure.

Illustratively, as shown in fig. 7, the rotary shaft end cap 140 is alternately formed with the first fixing key 131 and the first fixing groove 132 on the outer circumferential surface thereof in the circumferential direction thereof, and the inner circumferential surface of the rotary shaft connecting end of the cylinder 110 is alternately formed with the second fixing key and the second fixing groove in the circumferential direction thereof, wherein the second fixing key is in a key groove fit with the first fixing groove 132, and the second fixing groove is in a key groove fit with the first fixing key 131. The specific structure of the key slot structure may refer to the foregoing embodiments, and will not be described herein.

In some embodiments, as shown in connection with fig. 2 and 3, the barrel 110 includes an inner barrel 111 and an outer barrel 112, with the outer diameter of the inner barrel 111 being slightly smaller than the inner diameter of the outer barrel 112 so that the inner barrel 111 can be sleeved over the outer barrel 112. Here, the inner cylinder 111 is made of a hard material, which may be polyvinyl chloride, ceramic, or the like, as a base frame of the cylinder 110. The outer cylinder 112 is made of flexible and water-absorbing materials, and the outer cylinder 112 is used as a part directly contacted with the cleaned floor, so that the outer cylinder 112 has the effects of being deformable and easy to recover by extrusion, thereby ensuring longer service life and floor wiping effect; the water absorption characteristic can enable the floor to keep contact with the floor to be cleaned in a wet state, so as to achieve the cleaning effect of scrubbing the floor. Alternatively, the outer cylinder 112 may be made of cloth, sponge, or the like, and the outer circumferential surface of the inner cylinder 111 may be coated with cloth, sponge, or the like.

In some alternative embodiments, the electric heating element 120 is disposed between the inner cylinder 111 and the outer cylinder 112, and after the electric heating element 120 is turned on to heat, the heat emitted by the electric heating element can raise the temperature of the outer cylinder 112, so as to achieve the cleaning effect of "high Wen Caxi" on the floor, and remove stubborn stains on the floor more quickly and efficiently.

Optionally, as shown in fig. 8, the electrothermal member 120 has a membrane-like structure, for example, an electrothermal film made of graphene material is thinner, and can be attached to the outer peripheral surface of the inner cylinder 111 along the circumferential direction of the inner cylinder 111, so that the problem of overlarge volume of the cylinder 110, such as thickening and thickening, is avoided on the premise of not affecting the heating effect.

Alternatively, the electric heating element 120 may be fixed to the inner cylinder 111 and/or the outer cylinder 112 by gluing, binding, or the like. For example, a layer of adhesive layer is coated on the inner and outer sides of the electric heating film, and the electric heating film is adhered and fixed to the inner surface of the outer cylinder 112 and the outer surface of the inner cylinder 111 respectively through the adhesive layer, so as to reduce the slipping of the electric heating element 120 from the cylinder 110 during the rotation of the drum part 100.

In some embodiments, in order to make the heat of the electric heating element 120 more concentrated for heating the outer cylinder 112, the material of the inner cylinder 111 of the cylinder 110 is made of a material with a low thermal conductivity, or a thermal insulation layer is added between the inner cylinder 111 and the electric heating element 120 to reduce the conduction of heat to the inner side of the inner cylinder 111.

Alternatively, the heat insulating layer may be made of heat insulating paper, glass wool board, foamed polyurethane, etc.

In an embodiment, as shown in connection with fig. 8, the electrothermal element 120 further has an electrical connection 121, and the electrical connection 121 can be used for electrical connection with an external power source.

As shown in fig. 8, the power connection terminals 121 of the electric heating member 120 include a positive power connection terminal and a negative power connection terminal. The positive electrode terminal and the negative electrode terminal are both accommodated in the hollow space of the inner cylinder 111 and extend toward the rotating shaft connecting end.

Taking the positive electrode power connection end as an example, the positive electrode power connection end comprises a first power connection section and a second power connection section which are sequentially connected. One end of the first electric connection section is electrically connected with the electric heating element, penetrates into the inner cylinder 111 from the outer circumferential surface of the inner cylinder 111, and extends to a position close to the axis of the inner cylinder 111 in a tangential direction perpendicular to the penetration point. One end of the second electric connection section is electrically connected with the first electric connection section, and the other end extends to the rotating shaft connecting end along the direction parallel to the axis of the inner cylinder 111. Here, the arrangement of the negative electrode terminal is substantially the same as that of the positive electrode terminal described above. By adopting the above arrangement form for the positive electrode terminal and the negative electrode terminal, the distance between the two terminals 121 and the inner cylinder 111 can be increased, thereby avoiding interference between the two terminals 121 and the inner cylinder 111.

Here, in the hollow space of the inner cylinder 111, the first power receiving sections of the positive power receiving terminal and the negative power receiving terminal extend in parallel and are arranged at intervals, and the second power receiving sections extend in parallel and are arranged at intervals. The arrangement form can reduce the occurrence of short circuit problems caused by the fact that the positive electrode power connection end and the negative electrode power connection end are contacted in the rotation process.

In some embodiments, in order to further reduce the occurrence of short circuit, electric leakage, etc., the material of the inner cylinder 111 of the cylinder 110 is made of an insulating material or a material with low conductivity, or an insulating layer is added between the inner cylinder 111 and the electric heating element 120, so as to avoid forming a conductive path between the inner cylinder 111 and the electric heating element 120, which causes the short circuit problem.

Alternatively, polyimide film, rubber, or the like may be used for the insulating layer.

In yet other alternative embodiments, as shown in connection with fig. 2 and 3, the shaft support 200 is provided at the shaft connection end of the cylinder 110 and is pivotally connected to the cylinder 110. When in installation, the rotary shaft supporting part 200 is fixed on the floor washing machine body, and two shaft ends of the roller part 100 are respectively pivoted on the rotary shaft supporting part 200 and the rolling brush motor, so that the roller part 100 rotates relative to the rotary shaft supporting part 200 (floor washing machine body).

Specifically, as shown in connection with fig. 10, the shaft support 200 includes a shaft end 210 and a support handle 220. Wherein the shaft end 210 is used for connecting the shaft member 150 and the bearing 160, and is matched with the shaft end cover 140 of the drum part 100. The support handle 220 is a member for detachably connecting the roll brush module to the floor washing machine.

Alternatively, the shaft end 210 and the support handle 220 are integrally formed by an injection molding process. To ensure the structural strength of the entire shaft support 200.

In some embodiments, the shaft end 210 is generally cylindrical, and is sleeved on an end of the shaft end cover 140 facing away from the cylinder 110. The interior of the shaft end 210 is hollow, so as to be a space for accommodating the bearing 160. Here, an installation site is provided in the hollow space of the shaft coupling end 210, in which the bearing 160 is disposed, and an end of the shaft member 150 facing away from the cylinder 110 extends into the bearing 160, so that the shaft member 150 and the shaft coupling end 210 are rotatably coupled through the bearing 160.

Here, the shaft connection end 210 is coaxially disposed with the cylinder 110, so as to ensure that the rotation axes of the bearing 160, the shaft member 150 and the cylinder 110 are on the same line, and ensure the rotation stability of the cylinder 110.

Illustratively, as shown in FIG. 10, the overall outer contour of the support shank 220 is approximately hook-shaped, including a straight shank segment 221 and a shank segment 222. The straight shank 221 is formed on an end surface of the shaft end 210 facing away from the cylinder 110, and extends outwards along a radial direction of the end surface. The shank end is an end formed on the extension of the straight shank segment 221 and is configured in the form of an arc disposed at an angle to the straight shank segment 221. The straight shank segment 221 and the shank segment 222 are of unitary construction. It should be understood that the specific configuration of the support handle 220 may be adaptively adjusted according to the structure of the floor washing machine to which it is assembled, and the structural form thereof is not limited to the above-described exemplary form.

In some alternative embodiments, the heater 120 and the external power source are electrically connected through the power assembly 300.

Specifically, as shown in fig. 11, the power supply assembly 300 includes at least two sets of elastic conductive contact portions, where at least one set of elastic conductive contact portions is used to supply power to the positive electrode power receiving terminal 121 of the electric heating element 120, and at least one set of elastic conductive contact portions is used to supply power to the negative electrode power receiving terminal 121 of the electric heating element 120. By arranging the elastic conductive contact part, the user can still supply power to the electric heating element 120 when the floor washing machine is lifted, landed and the like, and the abnormal problems such as disconnection of the power supply are reduced.

In the practical application of the floor washing machine in the related art, when a user lifts up and lands the floor washing machine, the drum part 100 is affected by gravity, and the drum part is slightly displaced in the vertical direction relative to the floor washing machine, that is, the power supply circuit is easily disconnected in the vertical direction. For the above-mentioned case, the elastic contact point of at least one group of elastic conductive contact parts is located at the upper side of the horizontal center line of the cylinder 110, and the elastic deformation direction thereof includes the vertical direction; the elastic contact points of the other group of elastic conductive contact parts are positioned at the lower side of the horizontal center line of the cylinder 110, and the elastic deformation direction comprises the vertical direction. Thus, by disposing at least two sets of elastic conductive contact portions on the upper and lower sides of the horizontal center line of the cylinder 110, respectively, the elastic deformation direction of each elastic conductive contact portion can be made to correspond to the displacement direction of the drum portion 100. In this way, when the roller portion 100 is actually displaced, the elastic conductive contact portions are elastically deformed by themselves, so that the power supply connection to the electric heater 120 can be maintained.

In the embodiment shown in fig. 11, the number of resilient conductive contacts of the power supply assembly 300 is 2 sets.

Specifically, the resilient conductive contact includes a conductive slip ring 310 and a conductive contact 320.

As shown in fig. 2 and 9, the conductive slip ring 310 is disposed on the drum portion 100 and can rotate synchronously with the drum portion 100; the conductive contact 320 is disposed on the shaft supporting portion 200. In this way, during the rotation of the drum part 100 driven by the brush motor, the conductive slip ring 310 also rotates around its own axis, and the conductive contact 320 itself does not rotate, and remains electrically connected to the conductive slip ring 310 all the time.

Alternatively, as shown in fig. 12, the conductive slip ring 310 has an annular structure as a whole, and the hollow space inside is used as a penetration passage of the shaft member 150.

In the embodiment, the conductive slip rings 310 of each elastic conductive contact portion are arranged at intervals along the axial direction of the cylinder 110 and are respectively in conductive contact with the conductive contact pieces 320 in the corresponding group, so as to reduce the collision interference of each elastic conductive contact portion in the rotation process.

In an embodiment, the conductive slip ring 310 is clamped and fixed to the shaft end cap 140 at the end of the cylinder 110. Specifically, as shown in fig. 7 and 12, the shaft hole of the shaft cover 140 has a columnar structure, and one or more holding protrusions 141 are provided on the outer peripheral surface of the shaft hole, and each holding protrusion 141 is formed by extending along the axial direction of the shaft hole; correspondingly, one or more clamping grooves 311 are formed on the inner annular surface of the conductive slip ring 310, and each clamping groove 311 is formed by sinking from the inner annular surface along the radial direction. Thus, when in assembly, the clamping protrusions 141 of the rotating shaft end cover 140 are correspondingly clamped into the clamping grooves 311 of the conductive slip ring 310, so that the conductive slip ring 310 and the rotating shaft end cover 140 form clamping fit.

In the embodiment shown in fig. 12, the number of the holding grooves 311 formed on the conductive slip ring 310 is 3, and correspondingly, the number of the holding protrusions 141 formed on the shaft cover 140 is 3. Further, the 3 holding grooves 311 of the conductive slip ring 310 are distributed in a T shape, and the included angle between the adjacent holding grooves 311 is 90 °. By the position arrangement mode, the stress of the conductive slip ring 310 can be more balanced, and the local stress is avoided from being overlarge.

As shown in fig. 9 and 13, the conductive contact 320 is disposed on the shaft end 210 of the shaft supporting portion 200. Specifically, the conductive contact 320 is in a strip shape, and has a first end connected to the shaft end 210, and a second end extending out of the shaft end 210 along the axial direction of the cylinder 110 and extending toward the conductive slip ring 310.

Optionally, the first end of the conductive contact 320 and the shaft end 210 are provided with screw holes, and the conductive contact 320 is screwed to the shaft end 210 by a screw 322. The screw connection mode has the advantages of simple structure, quick assembly and disassembly and the like.

Optionally, the second end of the conductive contact 320 is in elastic contact with the conductive slip ring 310 through the carbon brush 321.

Here, the carbon brush 321 of one group of conductive contact 320 is abutted against the top edge of the corresponding conductive slip ring 310, and the carbon brush 321 of the other group of conductive contact 320 is abutted against the bottom edge of the corresponding conductive slip ring 310. For example, in the embodiment shown in fig. 11, the conductive slip ring 310 in the set of elastic conductive contact portions far from the cylinder 110 is in contact with the carbon brush 321 of the conductive contact piece 320 at its top edge, and the conductive slip ring 310 in the set of elastic conductive contact portions near to the cylinder 110 is in contact with the carbon brush 321 of the conductive contact piece 320 at its bottom edge. To achieve this relative position fit, the conductive contacts 320 of the former set of resilient conductive contacts are mounted at the top edge of the shaft end 210 and the conductive contacts 320 of the latter set of resilient conductive contacts are mounted at the bottom edge of the shaft end 210.

In still other alternative embodiments, one set of carbon brushes 321 is abutted against the front half of the top edge of the conductive slip ring 310. Here, the front half circumference of the top edge of the conductive slip ring 310 means a circumference from the top of the conductive slip ring 310 to the front horizontal center line position in the outer circumferential direction of the conductive slip ring 310, which is about 1/4 of the circumference of the conductive slip ring 310. The carbon brush 321 of the other group is abutted against the rear half circumference of the bottom edge of the conductive slip ring 310. Here, the front half circumference of the bottom edge of the conductive slip ring 310 means a circumference from the bottom of the conductive slip ring 310 to the front horizontal center line position in the outer circumferential direction of the conductive slip ring 310, which is about 1/4 of the circumference of the conductive slip ring 310.

In still other alternative embodiments, one set of carbon brushes 321 is abutted against the rear half of the top edge of the conductive slip ring 310. Here, the second half of the circumference of the top edge of the conductive slip ring 310 means a section of circumference from the top to the rear horizontal center line of the conductive slip ring 310 in the outer circumference direction of the conductive slip ring 310, which is about 1/4 of the circumference of the conductive slip ring 310. The carbon brushes 321 of the other group are abutted against the front half circumference of the bottom edge of the conductive slip ring 310. Here, the front half circumference of the bottom edge of the conductive slip ring 310 means a circumference from the bottom of the conductive slip ring 310 to the front horizontal center line position in the outer circumferential direction of the conductive slip ring 310, which is about 1/4 of the circumference of the conductive slip ring 310.

By adopting the arrangement mode of the carbon brushes 321 in the two alternative embodiments, the elastic deformation coverage range of the elastic conductive contact part can include the vertical direction, and the front and rear directions can be considered at the same time; thus, even when the user operates the floor washing machine to perform the back and forth reciprocating washing operation, the problems of the back and forth displacement difference and the power supply circuit disconnection caused by the inertia of the drum part 100 can be solved.

In some embodiments, the carbon brushes 321 of each set of elastic conductive contacts have a length greater than or equal to the thickness of the conductive slip ring 310 in the axial direction of the cylinder 110.

Here, when the user operates the floor washing machine to perform the left-right swing motion, there is a possibility that a displacement difference in the axial direction of the drum part 100 with respect to the floor washing machine body occurs. In order to ensure that the electrical connection to the electric heating element 120 is maintained even when the axial displacement difference occurs, the length of the carbon brush 321 in the axial direction of the cylinder 110 is increased in the embodiment of the present disclosure, so that the carbon brush 321 and the conductive slip ring 310 can be kept in conductive contact even in the presence of the axial displacement of the drum portion 100.

In some alternative embodiments, the abutment surface of the carbon brush 321 with the conductive slip ring 310 is configured as an arc shape, and the curvature of the arc shape is adapted to the curvature of the conductive slip ring 310. The arc-shaped abutting surface can increase the conductive contact area of the carbon brush 321 and the outer peripheral surface of the conductive slip ring 310, and further improve the stability of power supply connection.

In some embodiments, as shown in connection with fig. 11, the power supply assembly 300 further includes a power supply wire 330 disposed inside the shaft support 200 for electrically connecting the conductive contact 320 and an external power source.

In the embodiment, the number of the power supply wires 330 is at least two, and each power supply wire 330 is electrically connected to the conductive contact 320 of the elastic conductive contact portion in a one-to-one correspondence manner. The number of power supply lines 330 as shown in fig. 11 is 2, which are respectively a positive power supply line 330 and a negative power supply line 330.

In order to avoid the problem of wire winding, the inside of the shaft support 200 is configured with a routing channel, where the routing channel extends from the shaft end 210 of the shaft support 200 to the support handle 220, so as to lead the power supply wire 330 to the outside from the shaft end 210.

Alternatively, as shown in connection with fig. 14, the routing channel includes a first routing groove 231 extending along the outer circumference of the shaft-coupling end 210, a second routing groove 232 located at the outer side of the support handle 220, and a threading hole communicating the first routing groove 231 and the second routing groove 232. The second wire groove 232 extends from the straight shank segment 221 of the support shank 220 to the engagement position with the hook shank segment 222, and the second wire groove 232 is concavely formed on the outer side surface of the support shank 220.

In an embodiment, as shown in connection with fig. 11, the power assembly 300 further includes an outer contact set 340 disposed at a position where the straight shank segment 221 engages with the shank segment 222, the outer contact set 340 being for electrically conductive contact with a corresponding contact set on the scrubber body. One end of the power supply wire 330 is connected to the conductive contact 320, and the other end is connected to the external contact set 340.

In some alternative embodiments, the power assembly 300 further includes an insulating sheet set that covers at least a portion of the routing path of the routing channel. The insulating sheet set is used for constructing at least part of the routing path of the routing channel as an insulating path so as to avoid that the power supply connection wire 330 and part of the conductive components of the rotating shaft supporting part 200 form a conductive path in the routing channel.

Alternatively, as shown in connection with fig. 14, the insulating sheet group includes a first insulating sheet 351 and a second insulating sheet 352. The first insulating sheet 351 and the second insulating sheet 352 are disposed in the second wiring groove 232 in the foregoing. The first insulating sheet 351 is located at an open side of the second wiring groove 232, and can seal the opening of the second wiring groove 232 and insulate the second wiring groove 232 from the outside space. The second insulating sheet 352 is embedded in the second wiring groove 232, and can be used for insulating and separating the power supply connection line 330 from the groove surface of the second wiring groove 232.

As yet another alternative, as shown in fig. 14, the insulating sheet group includes a third insulating sheet 353, and the third insulating sheet 353 is disposed on the end surface of the shaft connection end 210 facing the cylinder 110, and can perform an insulating separation function between the power supply connection line 330 and the conductive slip ring 310 and other components on the side of the cylinder 110.

Here, the third insulating sheet 353 is further provided with an overhanging notch corresponding to the screw hole of the shaft end 210, and the conductive contact 320 of the power supply assembly 300 extends to the cylinder 110 through the overhanging notch. In this embodiment, the overhanging notch can not only insulate the conductive contact 320 from the shaft end 210, but also support the conductive contact 320, thereby reducing bending deformation of the conductive contact 320.

Optionally, the first insulating sheet 351, the second insulating sheet 352 and the third insulating sheet 353 are mylar sheets, which have better insulating properties.

In still other alternative embodiments, the disclosed embodiments further provide a floor scrubber comprising a floor scrubber body and a roller brush module, wherein the roller brush module is in the form of the roller brush module shown in any of the previous embodiments.

Here, the floor cleaning machine body and the rolling brush module not only can be detachably connected, but also can form a power supply connection relationship after assembly so as to supply power to the electric heating element of the rolling brush module by using the power supply of the floor cleaning machine body.

The above description and the drawings illustrate embodiments of the disclosure sufficiently to enable those skilled in the art to practice them. Other embodiments may include structural and other modifications. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in, or substituted for, those of others. The embodiments of the present disclosure are not limited to the structures that have been described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (10)

1. A roll brush module, comprising:

the roller part comprises a cylinder body and an electric heating element which is arranged on the cylinder body and used for heating the cylinder body, and the electric heating element is provided with an electric connection end;

the rotating shaft supporting part is arranged at the shaft end of the cylinder body and is in pivot connection with the cylinder body;

a power supply assembly for electrically connecting the electric heating element and an external power source; the power supply assembly comprises at least two groups of elastic conductive contact parts, wherein the elastic contact point of one group of elastic conductive contact parts is positioned on the upper side of the horizontal central line of the cylinder body, and the elastic contact point of the other group of elastic conductive contact parts is positioned on the lower side of the horizontal central line of the cylinder body.

2. The roll brush module of claim 1, wherein each elastic conductive contact comprises a conductive slip ring and a conductive contact; the conductive slip ring is coaxially arranged on the cylinder body and can synchronously rotate along with the cylinder body; the conductive contact piece is arranged on the rotating shaft supporting part and is in elastic contact with the conductive slip ring through a carbon brush;

the carbon brush of one group of conductive contact piece is abutted against the top edge of the corresponding conductive slip ring, and the carbon brush of the other group of conductive contact piece is abutted against the bottom edge of the corresponding conductive slip ring.

3. The roll brush module of claim 2, wherein the carbon brushes of one set are abutted against a front half-circumference or a rear half-circumference of a top edge of the conductive slip ring, and wherein the carbon brushes of one set are abutted against a rear half-circumference or a front half-circumference of a bottom edge of the conductive slip ring.

4. The roll brush module according to claim 2, wherein the conductive slip rings of each set of elastic conductive contact portions are disposed at intervals along the axial direction of the cylinder;

in the axial direction of the cylinder body, the carbon brush length of each group of elastic conductive contact parts is larger than or equal to the thickness of the conductive slip ring.

5. The roll brush module according to claim 2 or 4, characterized in that an abutment surface of the carbon brush with the conductive slip ring is configured as an arc shape, and a curvature of the arc shape is adapted to a curvature of the conductive slip ring.

6. The rolling brush module according to claim 2, wherein the rotating shaft supporting part is provided with a cylindrical shaft connecting end which is sleeved at the shaft end of the cylinder and is coaxially arranged;

the first end of the conductive contact piece is in threaded connection with the shaft connection end, the second end extends out of the shaft connection end along the axial direction of the cylinder body and extends towards the conductive slip ring, and the carbon brush is arranged at the second end of the conductive contact piece.

7. The roll brush module according to claim 6, wherein the rotating shaft supporting portion is internally provided with a wiring channel, the power supply assembly further comprises a power supply connection line arranged in the wiring channel, and one end of the power supply connection line is electrically connected with the conductive contact piece.

8. The roll brush module according to claim 7, wherein the rotation shaft supporting part further comprises a supporting handle provided at a side of the shaft coupling end away from the cylinder;

the wiring channel comprises a first wiring groove extending along the periphery of the shaft joint end, a second wiring groove positioned on the outer side face of the support handle, and a threading hole communicated with the first wiring groove and the second wiring groove.

9. The roll brush module of claim 8, wherein the power assembly further comprises an insulating sheet set covering at least a portion of the routing path of the routing channel.

10. A floor scrubber comprising a floor scrubber body and a roller brush module as claimed in any one of claims 1 to 9.