Light guide plate, roller brush cover assembly and cleaning equipment

Abstract

The present application relates to the technical field of cleaning and cleaning technology, and particularly relates to a light guide plate, a roller brush cover assembly and a cleaning device. The cleaning device base, the roller brush and the roller brush cover assembly, the roller brush is installed on the base; the roller brush cover assembly is installed on the base and located above the roller brush, the roller brush cover assembly is provided with a locking assembly and a light guide plate, at least one upward protruding protruding part is formed on the locking assembly, the light guide plate is provided with an up-and-down through avoiding space, and the avoiding space is used for avoiding the protruding part. The light guide plate provided in the embodiment of the present application is applied to the roller brush cover assembly and the cleaning device, the light guide plate is located in the roller brush cover assembly, and is arranged in the locking assembly on the roller brush cover assembly, which is beneficial to the compact structure, does not increase the height of the roller brush cover, and the setting of the light guide plate can allow the light source to be embedded in the interior of the cleaning device, and the light guide structure and the light emitting effect are optimized.

Description

Technical Field

[0001] This invention relates to the field of cleaning technology, and in particular to a light guide plate, a roller brush cover assembly, and a cleaning device. Background Technology

[0002] With the development of social productivity, people's living standards have also improved. With their material needs met, people have begun to use various tools to reduce labor and improve their quality of life, leading to the emergence of household cleaning equipment. Among these, floor cleaning machines, which combine vacuuming and water extraction capabilities, have gained popularity due to their powerful floor cleaning abilities. In recent years, with technological updates and product iterations, floor cleaning equipment has achieved significant development.

[0003] However, floor scrubbers still have certain limitations in performance. Most floor scrubbers on the market currently lack floor lighting, making it difficult for the human eye to thoroughly clean dark corners such as under tables and against walls. Summary of the Invention

[0004] To address the aforementioned technical problems, this application provides a light guide plate, a roller brush cover assembly, and a cleaning device.

[0005] According to a first aspect of the present invention, a cleaning device is provided, comprising:

[0006] Base;

[0007] A roller brush is mounted on the base;

[0008] A roller brush cover assembly is mounted on the base and located above the roller brush. The roller brush cover assembly is provided with a locking component and a light guide plate. The locking component has at least one upwardly protruding part. The light guide plate is provided with a vertically penetrating clearance space, which is used to avoid the protruding part.

[0009] Furthermore, the roller brush cover assembly includes an upper roller brush cover and a lower roller brush cover, with the light guide plate located between the upper roller brush cover and the lower roller brush cover.

[0010] The light guide plate includes a light-incident section, a transition section, and a light-exit section connected sequentially along a first direction. The end face of the light-incident section forms a light-incident surface, and the end face of the light-exit section forms a light-exit surface. The first direction is perpendicular to the rotation axis of the roller brush.

[0011] Furthermore, in a second direction parallel to the rotation axis of the roller brush, and in a second direction perpendicular to the first direction, multiple light-incident segments are arranged side by side, and an avoidance space is formed between adjacent light-incident segments to avoid the locking assembly.

[0012] Furthermore, the light-incident surface is designed to be concave.

[0013] Furthermore, the light-emitting surface is inclined, and along the first direction, the light-emitting surface extends from the top surface of the light guide plate to the bottom surface of the light guide plate.

[0014] Furthermore, the transition section is provided with grooves that correspond one-to-one with the avoidance spaces, the openings of the grooves are connected to the avoidance spaces, and the bottoms of the grooves are located within the transition section area.

[0015] Furthermore, the depth of the groove is positively correlated with the width of the groove.

[0016] Furthermore, both the upper and lower surfaces of the transition segment are arc surfaces, and the curvature of the upper surface of the transition segment is less than the curvature of the lower surface of the transition segment.

[0017] Furthermore, the upper surface of the light-emitting section is the light-emitting surface, and the lower surface of the light-emitting section is an arc-shaped surface or an inclined plane.

[0018] Furthermore, the highest point of the light-emitting segment is higher than the highest point of the light-incoming segment, and the lowest point of the light-emitting segment is lower than the lowest point of the light-incoming segment.

[0019] Furthermore, the extension length of the light incident segment in the first direction is at least the extension length of the locking component in the first direction.

[0020] Furthermore, the width of the clearance space is at least the sum of the width of the protrusion and the stroke of the protrusion.

[0021] Furthermore, the vertical distance between the highest and lowest points of the light-emitting surface is half the vertical distance between the lowest point of the light-emitting surface and the lowest point of the lower cover of the roller brush.

[0022] Furthermore, the cleaning device also includes multiple light sources disposed on the base, and the light guide plate includes at least two light incident segments, each light incident segment corresponding to at least one of the light sources.

[0023] According to a second aspect of the present invention, a roller brush cover assembly for a cleaning device is also provided. The roller brush cover assembly is provided with a locking component and a light guide plate. The locking component has at least one upwardly protruding portion, and the light guide plate has a vertically penetrating clearance space for accommodating the protruding portion. According to a third aspect of the present invention, a light guide plate for a cleaning device is also provided. The light guide plate includes an incident light segment, a transition segment, and an exit light segment connected sequentially along a first direction. The end face of the incident light segment forms a light incident surface, and the end face of the exit light segment forms a light emitting surface. Multiple incident light segments are arranged side-by-side along a second direction perpendicular to the first direction, and clearance spaces are formed between adjacent incident light segments.

[0024] The light guide plate provided in this embodiment of the invention is applied in the roller brush cover assembly and the cleaning equipment. The light guide plate is located in the roller brush cover assembly and is interspersed with the locking components on the roller brush cover assembly. This facilitates the compactness of the structure, does not increase the height of the roller brush cover, and allows the light source to be embedded inside the cleaning equipment, thus optimizing the light guiding structure and light output effect. Attached Figure Description

[0025] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application.

[0026] Figure 1 A cross-sectional view of the cleaning device provided in an embodiment of the present invention;

[0027] Figure 2 for Figure 1 A magnified view of part A in the middle;

[0028] Figure 3 A perspective structural view of the roller brush cover assembly provided in an embodiment of the present invention;

[0029] Figure 4 A schematic top view of the light guide plate provided in an embodiment of the present invention is shown;

[0030] Figure 5 A cross-sectional view of the light guide plate provided in an embodiment of the present invention is schematically shown;

[0031] Figure 6 An optical path diagram at the light-emitting surface of the light guide plate provided in an embodiment of the present invention is schematically shown;

[0032] Figure 7 A perspective view illustrating the assembly relationship of some structures in the roller brush assembly provided in an embodiment of the present invention is shown.

[0033] Figure 8for Figure 7 A magnified view of part B in the middle section;

[0034] Figure 9 A top view schematically illustrating the assembly relationship of some structures in the roller brush assembly provided in an embodiment of the present invention is shown.

[0035] Figure 10 for Figure 9 A magnified view of part C in the middle;

[0036] Figure 11 A schematic top view of the brush lower cover provided in an embodiment of the present invention is given;

[0037] Figure 12 A top view schematically illustrating the assembly relationship between the lower cover of the roller brush and the locking assembly provided in an embodiment of the present invention is given;

[0038] Figure 13 A schematic diagram illustrating the arrangement of light sources in the cleaning device of the present invention; and

[0039] Figure 14 for Figure 1 A magnified view of a portion of the central structure.

[0040] In the attached diagram:

[0041] 100. Base;

[0042] 200. Roller brush;

[0043] 300. Top cover of the roller brush; 301. First protrusion;

[0044] 400. Light guide plate; 401. Light entrance section; 402. Transition section; 403. Light exit section; 404. Light entrance surface; 405. Light exit surface; 406. Clearance space; 407. Groove; 408. Limiting protrusion; 409. First slot; 410. Second slot;

[0045] 500. Lower cover of the roller brush; 501. Second fixing part; 502. Limiting groove; 503. Second protrusion;

[0046] 600. Locking assembly; 601. Handle; 602. First connecting part; 603. First fixing part; 604. Second connecting part; 605. Buckle; 606. Elastic element;

[0047] 700. Light source. Detailed Implementation

[0048] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0049] It should be noted that the terms "comprising" and "having" and any variations thereof in the specification, claims and accompanying drawings of this application are intended to cover non-exclusive inclusion. For example, a system, product or device that includes a series of units is not necessarily limited to those units that are explicitly listed, but may include units that are not explicitly listed or that are inherent to such products or devices.

[0050] In this application, the terms "upper," "lower," "inner," "middle," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0051] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0052] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0053] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0054] Please refer to the appendix. Figure 1The cleaning equipment provided in this embodiment may have a base 100, a roller brush assembly, a suction port, and a suction channel located inside the cleaning equipment and communicating with the suction port. The cleaning equipment can clean dirt from the ground through the roller brush assembly and suck up dirt from the ground through the suction port. The sucked-up dirt enters the suction channel through the suction port. The function of the roller brush assembly is to separate solids and liquids after cleaning them from the ground. The roller brush assembly includes a roller brush 200, which is mounted on the base 100 and can rotate around a first axis. The roller brush assembly cleans solids and liquids from the ground through the roller brush 200. Specifically, the roller brush 200 needs to contact the ground to clean solids and liquids on the ground. When the surface of the roller brush 200 contacts and rubs against the ground, the roller brush 200 can adsorb solids and liquids onto its surface. As the roller brush 200 rotates, the solids and liquids on the surface of the roller brush 200 will first detach from the surface of the roller brush 200 due to their own gravity or external force. The solids or liquids that detach freely from the surface of the roller brush 200 will be sucked into the suction channel by the suction port, thereby completing the cleaning work of the bottom surface.

[0055] Most cleaning equipment in related technologies lacks floor lighting, making it easy for the human eye to miss and neglect thoroughly cleaning dark corners such as under tables and in wall corners. A few cleaning devices opt to fix a light panel directly to the head of the cleaning equipment to illuminate the floor, but this limits the structural layout of the cleaning device to some extent.

[0056] The cleaning device in this embodiment of the invention proposes a novel structural layout to achieve ground illumination. The cleaning device includes a roller brush cover assembly and a roller brush mounted on the base 100. The roller brush cover assembly is located above the roller brush 200. The roller brush cover assembly includes a locking component 600 and a light guide plate 400. The locking component 600 has at least one upwardly protruding portion. The light guide plate 400 has a vertically penetrating clearance space 406, which is used to avoid the protruding portion. The vertically penetrating clearance space 406 means that it extends through the light guide plate 400 in a direction perpendicular to its extension, and the extension direction of the light guide plate 400 is parallel to the axial direction of the roller brush 200. The light guide plate 400 is located in the roller brush cover assembly and is interspersed with the locking component 600 on the roller brush cover assembly. This arrangement is conducive to the compactness of the structure and does not increase the height of the roller brush cover assembly. Furthermore, the arrangement of the light guide plate 400 allows the light source to be embedded inside the cleaning equipment, thus optimizing the light guide structure and light output effect.

[0057] like Figure 3As shown, the base 100 and the roller brush cover assembly can form a semi-enclosed receiving space, in which the roller brush 200 is housed. The base 100 and the roller brush cover assembly can be detachably connected, for example, by a snap-fit ​​connection or a screw connection, to facilitate the removal of the base 100 and the roller brush 200 cover, thereby facilitating maintenance of the roller brush 200 and other components within the receiving space. The locking component 600 provided in the roller brush cover assembly is for quick connection of the roller brush cover assembly. The roller brush 200 can be connected to the base 100 via a rotating shaft and can be powered by a motor or other power device, allowing the roller brush 200 to be rotatably installed in the receiving space. Of course, the power device can also be located within the receiving space. The roller brush cover assembly is located above the roller brush 200, and the side of the roller brush cover assembly facing the roller brush 200 can be curved and cover the roller brush 200.

[0058] like Figure 1-3 As shown, the roller brush cover assembly includes an upper roller brush cover 300 and a lower roller brush cover 500, with the light guide plate 400 located between the upper roller brush cover 300 and the lower roller brush cover 500. Figure 12 As shown, the locking component 600 is mounted on the lower cover 500 of the roller brush. The locking component 600 has at least one upwardly protruding part. The clearance space on the light guide plate 400 avoids the protruding part of the locking component 600, so that the light guide plate 400 and the protruding part of the locking component 600 are arranged in an interlocking manner. The locking component 600 is limited in the vertical direction by the lower cover 500 of the roller brush and the light guide plate 400. After the upper cover 300 of the roller brush is connected to the lower cover 500 of the roller brush, the light guide plate 400 is sandwiched in the middle, thereby fixing the locking component 600 and the light guide plate 400.

[0059] like Figure 4 and Figure 5As shown, the light guide plate 400 includes a light-incident section 401, a transition section 402, and a light-exit section 403 connected sequentially along a first direction, wherein the first direction is horizontal and perpendicular to the rotation axis of the roller brush 200. More specifically, the first direction is the front-to-back direction of the cleaning device. The light guide plate 400 includes a light-incident section 401, a transition section 402, and a light-exit section 403 arranged sequentially from the rear end to the front end. The end face of the light-incident section 401 forms a light-incident surface 404, and the end face of the light-exit section 403 forms a light-exit surface 405. An internal reflection layer is provided on the surface of the light guide plate 400 other than the light-incident surface 404 and the light-exit surface 405. The internal reflection layer on the light guide plate 400 is used to continuously reflect the light entering the light guide plate 400 from the light-incident surface 404, realizing the transmission and distribution of light, and finally transmitting the light through the light-exit surface 405 from the light-incident surface 404 to form emitted light, illuminating the area in front of the cleaning device. Specifically, the light guide plate 400 can be a hollow structure or a solid high-transmittance material, such as polycarbonate, polyethylene, and ABS engineering plastic. The light guide plate 400 preferably uses a high-transmittance solid structure, and the inner reflective layer is preferably an electroplated silver layer. Furthermore, the surface of the light guide plate 400 is mirror-polished before the electroplating process to facilitate total internal reflection of light within the light guide plate 400, thereby reducing light loss.

[0060] It should be noted that the front-back direction mentioned in this application is relative to the forward and backward directions of the cleaning equipment. For example, the roller brush 200 is set at the front of the cleaning equipment. The left-right direction mentioned in this application is relative to when the user uses the cleaning equipment to clean the floor. When the user uses the cleaning equipment to clean the floor, they will be behind the cleaning equipment. From the user's perspective, their left side corresponds to the left side recorded in this application, and their right side corresponds to the right side recorded in this application.

[0061] A locking component 600 is provided on the lower cover 500 of the roller brush assembly. This locking component 600 is used to detachably mount the roller brush cover assembly to the base 100 or other structures connected to the base 100, ultimately achieving fixation relative to the base 100. Figure 4 As shown, in a second direction parallel to the rotation axis of the roller brush 200, i.e., in the left-right direction of the cleaning device, multiple light-incident sections 401 are arranged side by side, and adjacent light-incident sections 401 form a clearance space 406 for avoiding the locking assembly 600. Figure 7 As shown, the light guide plate 400 is located between the upper cover 300 and the lower cover 500 of the roller brush, and is interspersed with the locking components 600 on the lower cover 500 of the roller brush, which is conducive to the compactness of the structure and does not increase the height of the roller brush cover assembly.

[0062] In some embodiments of the present invention, the light-incident surface 404 is designed as a concave surface. The concave surface design allows the light-incident surface 404 to be designed to cover the light-emitting range of the light source 700, so that all the light from the light source 700 is transmitted into the interior of the light guide plate 400. Furthermore, through the refraction of the concave surface structure, the light entering the interior of the light guide plate 400 is dispersed, and the light is directed towards the surrounding inner reflection layer from more directions, thereby achieving the dispersion of light path transmission. After continuous refraction by the inner reflection layer, a relatively uniform emitted light can be formed on the light-emitting surface 405.

[0063] In some embodiments of the present invention, such as Figure 2 and Figure 5 As shown, the light-emitting surface 405 is inclined, and along the first direction, the light-emitting surface 405 extends from the top surface of the light guide plate 400 to the bottom surface of the light guide plate 400. That is, at one end of the light-emitting section 403 of the light guide plate 400, the lower surface of the light guide plate 400 extends beyond the upper surface, causing the light-emitting surface 405 to be inclined. The upper end of the light-emitting surface 405 is closer to the light-incident section 401 than the lower end of the light-emitting surface 405. According to the law of refraction of light, as... Figure 6 As shown, at the light-emitting surface 405, the light is refracted by the material of the light guide plate 400 into the air medium. Because the refractive index n1 of the light guide plate 400 is greater than the refractive index n2 of air, the emission angle β will be greater than the incident angle α, causing the emitted light to be refracted toward the ground. By adjusting the tilt angle of the light-emitting surface 405, the distance at which the emitted light illuminates the ground can be adjusted. Those skilled in the art can make specific selections and designs according to their needs.

[0064] In some embodiments of the present invention, such as Figure 4 As shown, the transition section 402 is provided with grooves 407 corresponding to the clearance spaces 406. The openings of the grooves 407 are connected to the clearance spaces 406, and the bottoms of the grooves 407 are located within the transition section 402. The grooves 407 are curved structures formed on the light guide plate 400, which facilitates the entry of light from the linear light entrance section 401 into the transition section 402. Through the reflection effect of the grooves 407, the light path can be further dispersed, allowing light to also be emitted from the light exiting surface 405 area facing the clearance space 406, thus enhancing the uniformity of light emission from the light exiting surface 405.

[0065] In some embodiments of the present invention, the lowest point of the groove 407 in the groove depth direction is selected at the middle position of the groove 407. On the one hand, this can make the visual effect symmetrical and beautiful, and on the other hand, the mold is simple to manufacture, which is conducive to mass production. In order to further improve the uniformity of light output from the light guide surface 405, the light guide plate 400 is filled with an atomizing agent to enhance the light scattering effect and improve the uniformity of light output from the light guide plate 400.

[0066] Furthermore, in embodiments of the present invention, if the lowest point of the groove bottom of the groove 407 is on the same straight line parallel to the axis of the roller brush 200, the structure of the light guide plate 400 is more regular, which is more conducive to uniform light output and easier to demold; preferably, such as Figure 4 As shown, the groove depth corresponding to the narrower groove 407 can be designed to be shallower. That is, when the distance between the two light-incident segments 401 is small, the groove depth of the groove 407 between the two light-incident segments 401 is shallower. This allows the light guide plate 400 to have a larger area, which is more conducive to light emission.

[0067] In some embodiments of the present invention, such as Figure 14 As shown, the plane containing the lowest point of the light-emitting surface 405 and the axis of the roller brush 200 is the first plane m, and the vertical plane passing through the axis of the roller brush 200 is the second plane n. The small angle formed between the first plane m and the second plane n is the deflection angle γ. Through experimental verification, technicians found that when the deflection angle γ is not greater than 45°, the illumination area and brightness formed by the light guide plate on the ground can meet the user's observation needs.

[0068] In some embodiments of the present invention, such as Figure 5 As shown, both the upper and lower surfaces of the transition section 402 are curved surfaces, and the curvature of the upper surface of the transition section 402 is less than that of the lower surface. The upper surface of the light-emitting section 403 is the light-emitting surface 405 of the light guide plate 400, and the lower surface of the light-emitting section 403 is a curved surface or an inclined plane. On the one hand, the curved surface design of the transition section 402 and the shape of the lower surface of the light-emitting section 403 are conformal designs to follow the shape of the lower cover 500 of the roller brush in space; on the other hand, the curved surface design of the upper and lower surfaces of the transition section 402 and the curved or inclined surface design of the lower surface of the light-emitting section 403 can utilize the divergence of light to form a uniform light emission effect on the light-emitting surface 405.

[0069] In some embodiments of the present invention, the highest point of the light-emitting section 403 is higher than the highest point of the light-incident section 401, and the lowest point of the light-emitting section 403 is lower than the lowest point of the light-incident section 401. This structural design enables the light emitted from the light source 700 inside the cleaning device to be transmitted along the direction of the roller brush cover assembly, adapting to the structural characteristics of the cleaning equipment and making full use of the product space; and the projection of the light-emitting surface 405 in the vertical plane parallel to the roller brush axis completely covers the projection of the light-incident surface 404, which is beneficial to the propagation of light entering from the light-incident surface on the light guide plate and increases the uniformity of light emission.

[0070] In some embodiments of the present invention, such as Figure 14As shown, the vertical distance H between the highest and lowest points of the light-emitting surface 405 is half the vertical distance h between the lowest point of the light-emitting surface 405 and the lowest point of the roller brush cover 500. With this design feature, the light guide plate 400 can clearly illuminate the ground, while the resulting light-emitting area is not too bright to cause glare. In some embodiments of the present invention, the extension length of the light-incident section 401 in the first direction is at least the extension length of the locking assembly 600 in the first direction, that is, in the first direction, the clearance space 406 can completely accommodate the locking assembly 600. Of course, in the second direction, the clearance space 406 should also be sized to accommodate the locking assembly 600.

[0071] Specifically, such as Figure 7-12As shown, to install the roller brush lower cover 500 onto the component to be installed, the locking assembly 600 includes a handle 601, a first connecting part 602, a first fixing part 603, a second connecting part 604, and a buckle 605 arranged in the second direction. The handle 601 and the first fixing part 603 both extend beyond the first connecting part 602 and the second connecting part 604 in the height direction. That is, the protruding part of the locking assembly, including the handle 601 and the first fixing part 603, is accommodated within the clearance space 406 on the light guide plate 400 and can interlock with the light guide plate 400. A second fixing part 501 is provided on the roller brush lower cover 500, and an elastic member 606 is installed between the first fixing part 603 and the second fixing part 501. The locking assembly 600 has a locked state and an unlocked state. In the locked state, the locking assembly 600 moves to its limit position parallel to the second direction under the elastic force of the elastic member 606. At this time, the latch 605 achieves the snap-fit ​​engagement between the lower cover 500 of the roller brush and the part to be installed. By moving the handle 601 in the opposite direction with external force, the two handles 601 move towards each other, and the locking assembly 600 overcomes the elastic restoring force of the elastic member 606, thereby releasing the snap-fit ​​engagement between the latch 605 and the part to be installed, thus obtaining the unlocked state. The handle 601 and the first fixing part 603 of the locking assembly 600 are both located within the clearance space 406 of the light guide plate 400, and the light entrance section 401 of the light guide plate 400 is correspondingly distributed above the first connecting part 602 and the second connecting part 604. This allows for efficient use of space and reduces the thickness of the roller brush cover assembly. It should be noted that the width of the clearance space 406 in the second direction should not only accommodate the structural dimensions of the handle 601 and the first fixing part 603, but also completely cover the range of motion of the handle 601 and the first fixing part 603. Specifically, the width of the clearance space 406 in the second direction should be at least the sum of the width of the protrusion located in the clearance space 406 and the stroke of the protrusion, so as not to interfere with the locking assembly 600 in realizing its own function. For example, when the protrusion is the handle 601 of the locking assembly 600, the width of the clearance space 406 that mates with the handle 601 should be at least the sum of the width of the handle 601 and the stroke of the handle 601, so that the handle 601 will not be interfered with during its movement; similarly, when the protrusion is the first fixing part 603 and the elastic member 606 of the locking assembly 600, the width of the clearance space 406 that mates with the first fixing part 603 and the elastic member 606 should not only be the width of the first fixing part 603 and the elastic member 606, but should also satisfy the stroke range of the first fixing part 603 and the elastic member 606, so that the first fixing part 603 and the elastic member 606 will not be interfered with during its movement.

[0072] In some embodiments of the present invention, the light-incident section 401 of the light guide plate 400 is provided with limiting protrusions 408 on both sides in the first direction, and the lower cover 500 of the roller brush is provided with limiting grooves 502 that cooperate with the limiting protrusions 408. The cooperation between the limiting protrusions 408 and the limiting grooves 502 limits the back-and-forth movement of the light guide plate 400. The limiting protrusions 408 may be provided on only one light-incident section 401, or they may be provided on multiple light-incident sections 401 simultaneously. For example, in the accompanying drawings of the embodiments of the present invention, they are schematically provided on two light-incident sections 401 at both ends. A first slot 409 is formed on the upper surface of the light guide plate 400 at the junction of the transition section 402 and the light-emitting section 403. A first protrusion 301 for engaging with the first slot 409 is provided at a corresponding position on the lower surface of the roller brush cover 300. A second slot 410 is formed on the lower surface of the light guide plate 400 at the junction of the transition section 402 and the light-emitting section 403. A second protrusion 503 for engaging with the second slot 410 is provided at a corresponding position on the upper surface of the roller brush cover 500. The engagement of the first slot 409 with the first protrusion 301 and the engagement of the second slot 410 with the second protrusion 503 can limit the vertical movement of the light guide plate 400, fixing the light guide plate 400 between the roller brush cover 300 and the roller brush cover 500 without the use of screws or other fasteners.

[0073] like Figure 1 and Figure 13 As shown, the cleaning device provided in this embodiment of the invention also includes a light source 700 disposed on the base 100. Multiple light sources 700 are arranged at intervals on the base, and each light source 700 corresponds to a light-incident surface 404. The light source 700 includes, but is not limited to, LED beads, bulbs, and other light-emitting elements. Preferably, LED beads are used as the light source 700, which can be easily embedded into the base 100 via a lamp plate. The one-to-one correspondence between the LED beads and the light-incident surface 404 in this invention allows for a uniform distribution of multiple LEDs, which is beneficial for uniform light output. Furthermore, the concave light-incident surface 404 allows as much of the light emitted by the LEDs as possible to be collected into the light guide plate 400. Preferably, the LED beads have a light-emitting angle of 30° to 90°, which can cooperate with the light-incident surface 404 to reduce light loss. Most preferably, the angle is 60°. The lamp plate used to fix the LED beads is preferably made of an aluminum substrate that facilitates heat dissipation.

[0074] In some embodiments of the present invention, such as Figure 1As shown, the central horizontal axis a of the light source 700 passes through the light-emitting surface 405, and the lowest point of the upper surface of the light guide plate 400 is higher than the central horizontal axis a of the light source 700, while the highest point of the lower surface of the light guide plate 400 is lower than the central horizontal axis a of the light source 700. In this way, the horizontal light rays emitted from the center of the light source 700 can be directly transmitted to the light-emitting surface 405 in a straight line within the single medium inside the light guide plate 400 to form the emitted light rays, without reflection occurring inside the light guide plate 400, thus reducing light loss during the light reflection process.

[0075] In another embodiment of the present invention, one light-incident segment 401 corresponds to at least one light source 700, that is, the light-incident surface 404 of one light-incident segment 401 can correspond to one or more light sources 700. For example, in order to increase the uniformity of light output, the light-incident segments 401 adjacent to the wider clearance space 406 on the light guide plate 400 can correspond to multiple light sources 700, so as to compensate for the technical problem of weak light output caused by the larger clearance space 406. Alternatively, the light guide plate 400 forms clearance spaces only at the two handle portions 601, and no clearance space 406 is formed at the light guide plate 400 corresponding to the area between the handle portion 601 and the latch 605. In this case, the light guide plate 400 corresponding to the area between the handle portion 601 and the latch 605 can correspond to multiple light sources 700, so as to accommodate a larger light guide plate area.

[0076] It should be noted that the embodiments of the present invention also separately protect the roller brush cover assembly in the above-mentioned cleaning equipment, that is, the roller brush cover assembly is provided with a locking component 600 and a light guide plate 400. The locking component 600 has at least one upward protrusion, and the light guide plate 400 is provided with a vertically penetrating clearance space 406, which is used to avoid the protrusion. Specifically, the roller brush cover assembly includes a roller brush upper cover 300, a light guide plate 400, and a roller brush lower cover 500 connected in sequence, wherein a locking component 600 is provided on the roller brush lower cover 500; the light guide plate 400 includes a light-incident section 401, a transition section 402, and a light-exiting section 403 connected in sequence along a first direction, wherein the end face of the light-incident section 401 forms a light-incident surface 404, and the end face of the light-exiting section 403 forms a light-exiting surface 405; the light guide plate 400 has an internal reflection layer on the surfaces of the light-incident surface 404 and the light-exiting surface 405; in a second direction perpendicular to the first direction, multiple light-incident sections 401 are arranged side by side, and a clearance space 406 is formed between adjacent light-incident sections 401 to avoid the locking component 600. The specific structural description of the roller brush cover assembly in this embodiment can be found in the cleaning equipment section of this embodiment, and will not be repeated here.

[0077] It should be noted that the embodiments of the present invention also separately protect the light guide plate 400 in the above-mentioned cleaning equipment. Specifically, the light guide plate 400 includes an incident light section 401, a transition section 402, and an exiting light section 403 connected sequentially along a first direction. The end face of the incident light section 401 forms an incident light surface 404, and the end face of the exiting light section 403 forms an exiting light surface 405. In addition to the inner reflective layer provided on the surfaces of the incident light surface 404 and the exiting light surface 405, multiple incident light sections 401 are arranged side-by-side along a second direction perpendicular to the first direction, with a clearance space 406 formed between adjacent incident light sections 401. For a detailed description of the specific structure of the light guide plate 400 in the embodiments of the present invention, please refer to the cleaning equipment section of the embodiments of the present invention; further details will not be repeated here.

[0078] The cleaning equipment mentioned above can achieve better performance and user experience than existing cleaning equipment in different scenarios. Some specific usage scenarios are given below.

[0079] Use case 1:

[0080] The light guide plate 400 includes a light-incident section 401, a transition section 402, and a light-exit section 403 connected sequentially along a first direction. The end face of the light-incident section 401 forms a light-incident surface 404, and the end face of the light-exit section 403 forms a light-exit surface 405. An internal reflection layer is provided on the surface of the light guide plate 400 other than the light-incident surface 404 and the light-exit surface 405. The lower cover 500 of the roller brush assembly is provided with two locking assemblies 600. Each locking assembly 600 includes a handle portion 601, a first connecting portion 602, a first fixing portion 603, a second connecting portion 604, and a latch 605 arranged in a second direction. The handle portions 601 of the two locking assemblies 600 are arranged adjacent to each other, and the latches 605 of the two locking assemblies 600 are located at both ends of the lower cover 500, respectively, for fixing the lower cover 500 from both ends and improving the stability of the connection. Both the handle part 601 and the first fixing part 603 are higher than the first connecting part 602 and the second connecting part 604 in the height direction. A second fixing part 501 is provided on the lower cover 500 of the roller brush. An elastic member 606 is installed between the first fixing part 603 and the second fixing part 501. The light guide plate 400 is provided with five light-incident segments 401 and four clearance spaces 406. The five light-incident segments 401 are respectively located above the second connecting part 604 of the first locking component 600, above the first connecting part 602 of the first locking component 600, between the two handles 601, above the first connecting part 602 of the second locking component 600, and above the second connecting part 604 of the second locking component 600. The four clearance spaces 406 are respectively used to avoid the first fixing part 603 of the first locking component 600, the handle 601 of the first locking component 600, the handle 601 of the second locking component 600, and the first fixing part 603 of the second locking component 600. When removing the roller brush cover 500 from the mounting component, the user holds the two latches 601 with their thumb and forefinger and pulls the two latches 601 together to overcome the elastic restoring force of the two elastic elements 606. This can drive the two buckles 605 at both ends to move together to unlock the locking component 600.

[0081] Some embodiments in this specification are described in a progressive or parallel manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other.

[0082] The above are merely specific embodiments of the present invention, enabling those skilled in the art to understand or implement the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A cleaning device, characterized in that, include: Base; A roller brush is mounted on the base; A roller brush cover assembly is mounted on the base and located above the roller brush. The roller brush cover assembly is provided with a locking component and a light guide plate. The locking component has at least one upwardly protruding part, and the light guide plate is provided with a vertically penetrating clearance space for avoiding the protruding part. The light guide plate includes an incident light section, a transition section, and an exit light section connected sequentially along a first direction. The end face of the incident light section forms an incident light surface, and the end face of the exit light section forms an exit light surface. An obstacle space is formed between adjacent incident light sections. The transition section is provided with a groove that corresponds one-to-one with the obstacle space. The opening of the groove is connected to the obstacle space, and the two side walls of the groove gradually approach each other along the direction from the incident light section to the exit light section.

2. The cleaning equipment according to claim 1, characterized in that, The roller brush cover assembly includes an upper roller brush cover and a lower roller brush cover, with the light guide plate located between the upper roller brush cover and the lower roller brush cover.

3. The cleaning equipment according to claim 1, characterized in that, The first direction is perpendicular to the rotation axis of the roller brush.

4. The cleaning equipment according to claim 1, characterized in that, Multiple incident light sections are arranged side by side along a second direction parallel to the rotation axis of the roller brush.

5. The cleaning equipment according to claim 1, characterized in that, The light-incident surface is designed to be concave.

6. The cleaning equipment according to claim 1, characterized in that, The light-emitting surface is inclined and extends from the top surface of the light guide plate to the bottom surface of the light guide plate along the first direction.

7. The cleaning equipment according to claim 3, characterized in that, The bottom of the groove is located within the transition section area.

8. The cleaning equipment according to claim 7, characterized in that, The depth of the groove is positively correlated with the width of the groove.

9. The cleaning equipment according to claim 3, characterized in that, The upper and lower surfaces of the transition section are both curved surfaces, and the curvature of the upper surface of the transition section is less than the curvature of the lower surface of the transition section.

10. The cleaning equipment according to claim 3, characterized in that, The upper surface of the light-emitting section is the light-emitting surface, and the lower surface of the light-emitting section is an arc-shaped surface or an inclined plane.

11. The cleaning equipment according to claim 3, characterized in that, The highest point of the light-emitting segment is higher than the highest point of the light-incident segment, and the lowest point of the light-emitting segment is lower than the lowest point of the light-incident segment.

12. The cleaning equipment according to claim 3, characterized in that, The length of the light incident segment in the first direction is at least the length of the locking component in the first direction.

13. The cleaning equipment according to claim 1, characterized in that, The width of the clearance space is at least the sum of the width of the protrusion and the travel of the protrusion.

14. The cleaning equipment according to claim 3, characterized in that, The vertical distance between the highest and lowest points of the light-emitting surface is half the vertical distance between the lowest point of the light-emitting surface and the lowest point of the roller brush cover assembly.

15. The cleaning equipment according to claim 3, characterized in that, It also includes multiple light sources disposed on the base, and the light guide plate includes at least two light incident segments, each light incident segment corresponding to at least one of the light sources.

16. A roller brush cover assembly for a cleaning device, characterized in that, The roller brush cover assembly is provided with a locking component and a light guide plate. The locking component has at least one upward protrusion, and the light guide plate is provided with a vertical clearance space for avoiding the protrusion. The light guide plate includes an incident light section, a transition section, and an exit light section connected sequentially along a first direction. The end face of the incident light section forms an incident light surface, and the end face of the exit light section forms an exit light surface. An obstacle space is formed between adjacent incident light sections. The transition section is provided with a groove that corresponds one-to-one with the obstacle space. The opening of the groove is connected to the obstacle space, and the two side walls of the groove gradually approach each other along the direction from the incident light section to the exit light section.

17. A light guide plate for cleaning equipment, characterized in that, The light guide plate includes an incident light section, a transition section and an exit light section connected sequentially along a first direction. The end face of the incident light section forms an incident light surface, and the end face of the exit light section forms an exit light surface. In a second direction perpendicular to the first direction, multiple incident light sections are arranged side by side, and a clearance space is formed between adjacent incident light sections. The transition section is provided with grooves that correspond one-to-one with the clearance spaces. The openings of the grooves are connected to the clearance spaces, and the two side walls of the grooves gradually approach each other along the direction from the light-incident section to the light-outceasing section.

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