Suction nozzle and cleaning apparatus

Abstract

A suction nozzle and a cleaning apparatus. The suction nozzle (100) is applied to the cleaning apparatus, the cleaning apparatus comprising an apparatus body, and the apparatus body comprising a wastewater tank (600). Two ends of the suction nozzle (100) are respectively provided with a suction port (140) and an outlet (150), a drainage channel (160) for communicating the suction port (140) and the outlet (150) is formed in the suction nozzle (100), and the outlet (150) is used for communicating with the wastewater tank (600). The suction nozzle (100) is configured to be rotatably mounted on the apparatus body, so as to have a working position capable of keeping the suction port (140) attached to a surface to be cleaned. A sealing ring (200) is provided at the outlet (150) and is used for sealing a fit clearance between the suction nozzle (100) and the wastewater tank (600), and the sealing ring (200) can elastically deform.

Description

Nozzles and cleaning equipment Technical Field

[0001] The present application relates to the technical field of cleaning machines, and in particular to a suction nozzle and a cleaning device. Background Art

[0002] A robotic cleaning device is a device that sucks in foreign matter, such as dust, sewage, or debris, from the surface to be cleaned as it moves across the surface. During the robot's automated cleaning process, it must remove foreign matter from the surface through a suction nozzle. In the prior art, the suction nozzle is typically integrated with a roller brush, which rolls away foreign matter, such as water stains, dust, or debris, from the surface being cleaned, and then the suction nozzle removes these foreign matter, thereby achieving the desired cleaning effect. However, because the roller brush requires a large space to roll, the cleaning opening of the cleaning robot must be wide open, reducing the negative pressure generated by the suction nozzle. Consequently, some water stains or dust cannot be removed, resulting in unsatisfactory cleaning results. Technical issues

[0003] The main purpose of this application is to provide a suction nozzle that improves the cleaning effect by maintaining the suction mouth of the suction nozzle directly in contact with the surface to be cleaned. Technical Solutions

[0004] To achieve the above-mentioned purpose, the suction nozzle proposed in this application is applied to a cleaning device, wherein the cleaning device includes a device body, the device body includes a sewage tank, and the suction nozzle includes:

[0005] A suction nozzle, having a suction port and an outlet at both ends, a drainage channel connecting the suction port and the outlet is formed in the suction nozzle, the outlet is used to connect to the sewage tank, and the suction nozzle is configured to be rotatably mounted on the device body so as to have a working position capable of maintaining the suction port in contact with the surface to be cleaned; and

[0006] A sealing ring is provided at the outlet for sealing the fitting gap between the suction nozzle and the sewage tank, and the sealing ring is elastically deformable.

[0007] In one embodiment, the rotational connection position between the suction nozzle and the device body is arranged adjacent to the outlet, the distance from the outlet to the rotational connection position is defined as L1, and the distance from the suction port to the rotational connection position is defined as L2, and L1 and L2 satisfy: L2>L1.

[0008] In one embodiment, L1 and L2 satisfy: 3L1≤L2≤30L1.

[0009] In one embodiment, a guide slope is provided on the periphery of the suction port, and the guide slope extends obliquely upward in a direction away from the suction port.

[0010] In one embodiment, a first elastic member is connected between the suction nozzle and the device body, and under the action of the first elastic member, the suction nozzle can be maintained in the working position.

[0011] In one embodiment, the first elastic member is configured as a compression spring, and the first elastic member is located above the rotational connection position between the suction nozzle and the device body, and is located on the side of the rotational connection position away from the suction nozzle. In a compressed state, the first elastic member is tilted downward in a direction close to the rotational connection position.

[0012] In one embodiment, the suction nozzle also includes a mounting member, the mounting member is provided with a accommodating groove, the suction nozzle is provided with one end of the outlet is provided in the accommodating groove, the suction nozzle is rotatably connected to the mounting member, and the suction nozzle and the accommodating groove have a movable gap in the vertical direction and the horizontal direction.

[0013] In one embodiment, guide grooves are provided on the two opposite side walls of the accommodating groove, and the guide grooves extend in the vertical direction. A rotating shaft is protruded from the two opposite outer side walls of the suction nozzle, and one rotating shaft can be rotatably inserted into one of the guide grooves and can slide along the extension direction of the corresponding guide groove.

[0014] In one embodiment, a second elastic member is connected to the upper side of the suction nozzle, and under the action of the second elastic member, the suction nozzle has a tendency to move downward.

[0015] In one embodiment, a plurality of the second elastic members are provided, and one second elastic member is correspondingly abutted against the top of each of the rotating shafts.

[0016] In one embodiment, the suction nozzle further abuts against at least one second elastic member in the middle portion between the two rotating shafts.

[0017] In one embodiment, the two ends of the sealing ring are configured as a first end and a second end, the inner circumference of the first end is provided with a first ring groove, the outer circumference of the outlet is provided with a first ring bulge, and the first ring bulge is tightly engaged with the first ring groove.

[0018] In one embodiment, a second annular groove is provided on the outer circumference of the second end, the mounting member is provided with a passage opposite to the outlet, a second annular protrusion is provided on the periphery of the passage, and the second annular protrusion is tightly engaged with the second annular groove.

[0019] In one embodiment, the suction nozzle includes a main body and a mounting head, the outlet is provided on the mounting head, a sealing ring is provided at the connection point between the main body and the mounting head, the sealing ring adapter is clamped between the mounting head and the main body, and the main body and the mounting head are detachably connected.

[0020] In one embodiment, the mounting head is provided with a mounting opening, a buckle is provided on the periphery of the mounting opening, and the main body is snapped to the buckle.

[0021] The present application also proposes a cleaning device, which includes a device body and the aforementioned suction nozzle, and the outlet is connected to the sewage tank of the device body. Beneficial effects

[0022] The technical solution of the present application directly fits the suction mouth onto the surface to be cleaned, and the suction nozzle is rotatably installed in the cleaning equipment, and at the same time, an elastically deformable sealing ring is provided on the fitting gap between the outlet and the sewage tank. In this way, when the surface to be cleaned is flat, the suction nozzle remains stable in the equipment body, and the suction mouth always fits the surface to be cleaned, so that the suction nozzle can suck away the dirt on the surface to be cleaned. When the surface to be cleaned has unevenness, the suction nozzle rotates in the equipment body so that the suction mouth can float with the shape of the surface to be cleaned. At this time, the sealing ring undergoes elastic deformation to ensure that the fitting gap between the suction nozzle and the sewage tank is always in a sealed state, thereby avoiding air leakage at the outlet, affecting the negative pressure in the suction nozzle and reducing the cleaning effect. Therefore, the suction nozzle of the present application can ensure that the suction nozzle is always in the working position during the cleaning process of the cleaning equipment, and the suction mouth can always fit the surface to be cleaned, so that the suction force of the suction nozzle is directly applied to the surface to be cleaned, thereby improving the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0024] FIG1 is a schematic structural diagram of an embodiment of a nozzle of the present application;

[0025] FIG2 is an exploded schematic diagram of the nozzle in FIG1 ;

[0026] FIG3 is a cross-sectional view of the suction nozzle in FIG1 configured in a cleaning device;

[0027] FIG4 is a partial enlarged view of point A in FIG3 ;

[0028] FIG5 is a schematic structural diagram of the mounting member in FIG1 ;

[0029] FIG6 is a schematic diagram of an explosion of the suction nozzle in FIG1 ;

[0030] FIG7 is a schematic structural diagram of the sealing member in FIG1 ;

[0031] FIG8 is a cross-sectional view of another embodiment of the nozzle of the present application;

[0032] FIG9 is a cross-sectional view of another embodiment of the suction nozzle of the present application.

[0033] Description of Figure Numbers:

[0034] Reference number name Reference number name 100 suction nozzle 110 main body 120 mounting head 121 buckle 130 sealing ring 140 suction port 150 outlet 160 drainage channel 170 first annular protrusion 180 rotating shaft 190 guiding inclined surface 200 sealing ring 210 first annular groove 220 second annular groove 300 mounting member 310 accommodating groove 320 U-shaped groove 330 fixing ring 340 second annular protrusion 400 first elastic member 500 second elastic member 600 sewage tank

[0035] The realization of the objectives, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. Modes for Carrying Out the Invention

[0036] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0037] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0038] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement it. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0039] The present application provides a suction nozzle.

[0040] In the embodiment of the present application, referring to FIG. 1 to FIG. 9 , the nozzle is applied to a cleaning device, the cleaning device including a device body, the device body including a sewage tank 600, and the nozzle including:

[0041] The suction nozzle 100 has a suction port 140 and an outlet 150 at both ends, a drainage channel 160 is formed in the suction nozzle 100 to connect the suction port 140 and the outlet 150, and the outlet 150 is used to connect to the sewage tank 600. The suction nozzle 100 is configured to be rotatably mounted on the device body so as to have a working position capable of maintaining the suction port 140 in contact with the surface to be cleaned; and

[0042] The sealing ring 200 is disposed at the outlet 150 to seal the gap between the suction nozzle 100 and the sewage tank 600 , and the sealing ring 200 is elastically deformable.

[0043] The technical solution of the present application is to directly fit the suction port 140 on the surface to be cleaned, and the suction nozzle 100 is rotatably installed on the device body, and at the same time, an elastically deformable sealing ring 200 is provided on the matching gap between the outlet 150 and the sewage tank 600. In this way, when the surface to be cleaned is flat, the suction nozzle 100 remains stable in the device body, and the suction port 140 always fits the surface to be cleaned, so that the suction nozzle 100 can suck away the dirt on the surface to be cleaned. When the surface to be cleaned has unevenness, the suction nozzle 100 rotates in the device body, so that the suction port 140 is rotated in the device body. 40 can float with the shape of the surface to be cleaned. At this time, the sealing ring 200 undergoes elastic deformation to ensure that the fitting gap between the suction nozzle 100 and the sewage tank 600 is always in a sealed state, thereby avoiding air leakage at the outlet 150, affecting the negative pressure in the suction nozzle 100 and reducing the cleaning effect. Therefore, the suction nozzle of the present application can ensure that during the cleaning process of the cleaning equipment, the suction nozzle 100 is always in the working position, and the suction port 140 can always fit the surface to be cleaned, so that the suction force of the suction nozzle 100 directly acts on the surface to be cleaned, thereby improving the cleaning effect.

[0044] It should be noted that the suction nozzle 100 is configured to be rotatably mounted on the cleaning device body. The suction nozzle 100 can be rotated relative to the device body around a rotation axis so that the suction port 140 floats as a whole. Alternatively, the two sides of the suction nozzle 100 can be independently displaced in the up and down directions relative to the device body so that one end of the suction port 140 floats alone, so that the suction port 140 forms a certain angle with the horizontal plane, thereby allowing the suction port 140 to adapt to more complex and diverse surfaces to be cleaned, or the above two activities can be integrated into one. In addition, the directional indications such as up and down referred to in this solution refer to Figures 3 and 9. If the posture of the suction nozzle changes, the directional indication will also change accordingly.

[0045] Among them, the cleaning equipment using the suction nozzle can be a carpet cleaning robot or a floor cleaning robot. Correspondingly, the surface to be cleaned can be a carpet or a floor. Similarly, the cleaning equipment can be a fully automatic, semi-automatic or purely manual cleaning equipment. In this embodiment, the suction nozzle is applied to a fully automatic carpet cleaning robot, the surface to be cleaned is a carpet, and a roller brush port is also provided on the lower side of the equipment body. In the forward direction of the cleaning equipment, the roller brush port is in front of the suction port 140. It can be understood that the roller brush of the roller brush port first brushes the carpet, and then the suction port 140 absorbs the dirt on the carpet surface cleaned by the roller brush.

[0046] In one embodiment, referring to Figures 1 to 3 , the pivotal connection between the nozzle 100 and the device body is located adjacent to the outlet 150 . The distance between the outlet 150 and the pivotal connection is defined as L1, and the distance between the suction port 140 and the pivotal connection is defined as L2. L1 and L2 satisfy the following relationship: L2 > L1. It can be appreciated that the floating amplitude at the suction port 140 is greater than the floating amplitude at the outlet 150, so that the sealing ring 200 only needs to undergo minimal deformation to ensure a tight seal within the clearance between the nozzle 100 and the sewage tank 600. This minimizes the deformation of the sealing ring 200 during use, reducing wear and tear and increasing its service life. Furthermore, since the elasticity requirements for the sealing ring 200 are relatively low, most commercially available elastic materials are suitable for use in the nozzle of this embodiment, thereby reducing production costs. Of course, in other embodiments, L1 can also be greater than L2, so that a spring with less elastic force can be provided at the outlet 150 to maintain the suction port 140 in its operating position.

[0047] Specifically, in this embodiment, please continue to refer to Figures 1 to 3, L1 and L2 satisfy: 3L1≤L2≤30L1. In this way, a longer rotational force arm is presented from the rotational connection position between the suction nozzle 100 and the device body to the suction port 140, which can further reduce the elastic deformation of the sealing ring 200 caused by the floating of the suction port 140, and improve the durability and reliability of the sealing ring 200. Specifically, L2 can be equal to 8L1, 12L1 or 16L1. When L2 < 3L1, the distance from the suction port 140 to the rotational connection position is not long enough, and the deformation at the outlet 150 will still have a certain amplitude, and there are still certain requirements for the elastic deformation capacity of the sealing ring 200. When L2 > 30L1, for the existing size of the suction nozzle, the distance from the outlet 150 to the rotational connection position is too short, which places high requirements on the production process and is not conducive to reducing costs and improving production efficiency.

[0048] In one embodiment, referring to Figures 2, 3, 6, and 9, a guide slope 190 is provided on the periphery of the suction port 140. The guide slope 190 extends upwardly and obliquely away from the suction port 140. It is understood that during the movement of the cleaning device, if a protrusion appears on the surface to be cleaned, the guide slope 190 will first abut against the protrusion, and then the guide slope 190 will gradually rise, causing the suction nozzle to rotate about its rotational connection position, and the suction port 140 will simultaneously rise and maintain contact with the surface to be cleaned. After the suction port 140 passes over the protrusion, the suction port 140 gradually falls and always maintains contact with the surface to be cleaned. In this way, the guide slope 190 can guide the suction port 140 to rise, thereby improving the ability of the suction port 140 to cross the protrusion and maintain contact with the surface to be cleaned, thereby preventing the suction port 140 from colliding and interfering with the protrusion in the horizontal direction, which may cause the cleaning device to be unable to move. Specifically, the guide slope 190 can be continuously arranged along the periphery of the suction port 140, or can be arranged in sections, or can be arranged on at least one pair of sides of the suction port 140. In this embodiment, the guide slope 190 is continuously arranged along the periphery of the suction port 140 to enhance the obstacle-crossing ability of the suction port 140 and ensure the stability of the suction port 140 in contact with the surface to be cleaned during the turning, forward or backward process of the cleaning equipment.

[0049] In one embodiment, referring to Figures 3 and 4, a first elastic member 400 is connected between the nozzle 100 and the device body. Under the action of the first elastic member 400, the nozzle 100 can be maintained in the working position. It should be noted that the first elastic member 400 is located in the vertical plane in which the nozzle 100 rotates within the device body, and the elastic expansion direction of the first elastic member 400 extends around the rotational connection point between the nozzle 100 and the device body. When encountering a convex surface, the nozzle 100 is pushed upward by the first elastic member 400. The elastic force in its elastic expansion direction creates a certain contact force between the suction port 140 and the surface to be cleaned, thereby ensuring a constant negative pressure in the drainage channel 160 and ensuring a cleaning effect. When the convex surface disappears or encounters a concave surface, the nozzle 100 rotates downward, and the first elastic member 400 follows and pushes the nozzle 100 to ensure a constant negative pressure in the drainage channel 160 and ensure a cleaning effect. Of course, in other embodiments, a weight is disposed at the suction port 140 of the suction nozzle 100 to maintain the contact force between the suction port 140 and the surface to be cleaned, thereby ensuring that the pressure in the drainage channel 160 is constant.

[0050] Further, in this embodiment, please refer to Figures 3 and 4, the first elastic member 400 is configured as a compression spring, and the first elastic member 400 is located above the rotational connection position between the suction nozzle 100 and the device body, and is located on the side of the rotational connection position away from the suction nozzle 100. In the compressed state, the first elastic member 400 is tilted downward in the direction close to the rotational connection position. It should be noted that when the first elastic member 400 here is in a compressed state, the suction port 140 has already rotated or swung upward, and the elastic expansion and contraction direction of the first elastic member 400 is parallel to the vertical plane in which the suction nozzle 100 rotates in the main body of the device. In this way, the elastic force of the first elastic member 400 in the compressed state has components in both the horizontal and vertical planes. Since the first elastic member 400 is arranged above the rotating connection position and is located on the side of the rotating connection position away from the suction port 140, the suction port 140 has a tendency to rotate toward the surface to be cleaned, that is, to move downward. At this time, when the suction nozzle 100 rotates around the rotating connection position or jumps up and down at both ends of the suction port 140, only one first elastic member 400 is provided to reset the suction nozzle 100, thereby simplifying the structural setting and improving the space utilization in the cleaning equipment. Without loss of generality, in this embodiment, the elastic expansion and contraction direction of the first elastic member 400 also intersects with the vertical line in the middle of the extension direction of the suction port 140, so as to balance the contact force between the two ends of the suction port 140 and the surface to be cleaned. In other embodiments, the first elastic member 400 can be arranged on the side of the rotational connection position close to the suction nozzle 100 and above the rotational connection position. In this case, in the compressed state, the first elastic member 400 is arranged tilted downward in the direction close to the suction port 140; or the first elastic member 400 is configured as a tension spring, and the first elastic member 400 is arranged on the side of the rotational connection position close to the suction nozzle 100 and below the rotational connection position. In this case, in the stretched state, the first elastic member 400 is arranged tilted upward in the direction close to the rotational connection position.

[0051] In one embodiment, referring to Figures 1 to 9 , the suction nozzle further includes a mounting member 300 , which includes a receiving groove 310 . One end of the suction nozzle 100 having an outlet 150 is located in the receiving groove 310 . The suction nozzle 100 is rotatably connected to the mounting member 300 , and there is a clearance between the suction nozzle 100 and the receiving groove 310 in both vertical and horizontal directions. It should be noted that the mounting member 300 can be a separate component or can be included in the connection structure between the suction nozzle 100 and the cleaning device body, located at the connection portion of the cleaning device body. The sealing ring 200 seals the connection between the suction nozzle 100 and the mounting member 300 . In this way, when controlling the sealing between the suction nozzle 100 and the sewage tank 600 , the sealing member can be first assembled between the suction nozzle 100 and the mounting member 300 , and then the nozzle 100 can be fixed to the sewage tank 600 via the mounting member 300 , thereby reducing the assembly difficulty of the cleaning device. Of course, in other embodiments, the suction nozzle 100 can also be directly connected to the sewage tank 600 via the sealing member.

[0052] Specifically, in this embodiment, referring to Figures 1 to 3 , a fixing ring 330 is provided at the connection between the mounting member 300 and the nozzle 100. The fixing ring 330 is fixed to the mounting member 300 by screwing. The fixing ring 330 is made of a relatively rigid material. One end of the sealing ring 200 is tightly connected to the fixing ring 330 to ensure communication between the channels within the two and to ensure the sealing of the mating gap. This reduces the material requirements for the main body of the mounting member 300, reducing costs and the difficulty of molding the mounting member 300. Of course, in other embodiments, the sealing ring 200 can also be directly fixed to the opening of the mounting member 300.

[0053] Furthermore, in this embodiment, please refer to Figure 5, the groove walls on both sides of the accommodating groove 310 are provided with guide grooves, and the guide grooves extend in the vertical direction. The two opposite outer side walls of the suction nozzle 100 are both protruding with a rotating shaft 180, and a rotating shaft 180 can be rotatably inserted in a guide groove and can slide along the extension direction of the corresponding guide groove. Without loss of generality, in this embodiment, the guide groove is configured as a U-shaped groove with the opening facing upward, and the rotating shaft 180 is clamped in the U-shaped groove in the horizontal direction. Under normal conditions, the rotating shaft 180 abuts against the bottom of the U-shaped groove. In this way, when the suction nozzle 100 rotates around the rotating connection position, the cooperation of the rotating shaft 180 and the U-shaped groove enables the suction nozzle 100 to rotate stably, and when the suction nozzle 100 swings, the rotating shaft 180 at the end corresponding to the lifting of the suction port 140 can slide along the extension direction of the U-shaped groove, thereby generating a guiding and limiting effect for the swing of the suction nozzle 100, so that the suction port 140 can be reset to a horizontal state. In addition, the opening of the U-shaped groove also makes it convenient for technicians to install the suction nozzle 100 in the accommodating groove 310, thereby improving the convenience of assembly. Of course, in other embodiments, the opening of the guide groove can also be opened in the horizontal direction, or the side wall of the accommodating groove 310 is connected to the suction nozzle 100 at the rotation connection position through a universal joint, and the universal joint extends upward at an angle and has elastic expansion and contraction capabilities in its extension direction.

[0054] In another embodiment, referring to Figures 8 and 9 , a second elastic member 500 is connected to the upper side of the nozzle 100. Under the action of the second elastic member 500, the nozzle 100 tends to move downward. Thus, when the nozzle 100 swings, the second elastic member 500 can drive the nozzle 100 downward and maintain contact with the bottom of the U-shaped groove, ensuring interaction between the suction port 140 and the surface to be cleaned, providing effective suction for the nozzle 100 and ensuring a good cleaning effect.

[0055] Specifically, in this embodiment, referring to Figure 8 , multiple second elastic members 500 are configured, with one corresponding second elastic member 500 abutting against each rotating shaft 180. This allows the corresponding second elastic member 500 to generate a downward elastic force against either end of the suction port 140 when the suction port 140 moves upward, thereby maintaining the suction port 140 in a horizontal position. This allows the suction port 140 to effectively contact the surface to be cleaned, ensuring a thorough cleaning. Furthermore, the second elastic member 500 reduces the swing amplitude of the suction nozzle 100, improving the suction efficiency of the suction port 140.

[0056] In another embodiment, referring to FIG9 , the nozzle 100 further abuts against at least one second elastic member 500 in the middle between the two rotating shafts 180. Thus, the two rotating shafts 180 and the second elastic member 500 located on the upper side of the middle portion form a three-point balance structure. When either end of the suction port 140 jumps upward, the second elastic member 500 exerts a downward elastic force on the corresponding rotating shaft 180, causing the rotating shaft 180 to have a tendency to reset toward the bottom of the U-shaped groove, thereby ensuring the fit between the suction port 140 and the surface to be cleaned and improving the cleaning effect. Of course, in other embodiments, three second elastic members 500 can be provided, all located on the upper side of the suction nozzle 100 and corresponding to the two rotating shafts 180 and the middle portion between the two rotating shafts 180, respectively.

[0057] In one embodiment, please refer to Figures 2 and 7, the two ends of the sealing ring 200 are configured as a first end and a second end. The inner circumference of the first end is provided with a first annular groove 210, the outer circumference of the outlet 150 is provided with a first annular protrusion 170, and the first annular protrusion 170 is tightly engaged with the first annular groove 210, and the outer circumference of the second end is provided with a second annular groove 220. The mounting member 300 is provided with a passage opposite to the outlet 150, and the periphery of the passage is provided with a second annular protrusion 340, which is tightly engaged with the second annular groove 220. As can be understood, at least two horizontally extending engaging sidewalls extend vertically between each annular protrusion and its corresponding annular groove. Under the weight of the suction nozzle 100, the gaps between these horizontally extending engaging sidewalls are compressed. This effectively ensures the seal between the first annular protrusion 170 and the first annular groove 210, the second annular protrusion 340, and the second annular groove 220, increases the path for pressure leakage, and ensures the reliability and stability of the clearance between the sealing ring 200 and the suction nozzle 100 and the sewage tank 600. Furthermore, when the sealing ring 200 undergoes elastic deformation, the engagement between the first annular protrusion 170 and the first annular groove 210, the second annular protrusion 340, and the second annular groove 220 ensures a tight seal while also providing sufficient deformation for the sealing ring 200. Furthermore, the use of a snap-fit ​​mechanism to install the sealing ring 200 between the outlet 150 and the sewage tank 600 enhances the ease of assembly of the cleaning apparatus. Specifically, in this embodiment, the second annular protrusion 340 is disposed on the retaining ring 330. In another embodiment, one of the first end and the second end of the sealing ring 200 can be installed in the corresponding position by the above-mentioned clip-on method, and the other can be installed in the corresponding position by gluing or injection molding, or the first end and the second end of the sealing ring 200 can be installed in their respective corresponding positions by gluing or injection molding. It should be noted that the material of the first end and the second end of the sealing ring 200 is lower in hardness than the material of the first end and the second end, and the surface of the sealing ring 200 is hard at the ends and soft in the middle, so as to improve the convenience of connecting the two ends of the sealing ring 200 to the suction nozzle 100 and the sewage tank 600 respectively, and to enable the sealing ring 200 to have a certain elastic deformation ability to prevent leakage between the outlet 150 and the sewage tank 600 during the floating process of the suction nozzle 100.

[0058] In one embodiment, please refer to Figures 2 and 6, the suction nozzle 100 includes a main body 110 and a mounting head 120, the outlet 150 is provided on the mounting head 120, and a sealing ring 130 is provided at the connection point between the main body 110 and the mounting head 120. The sealing ring 130 is adapted to be clamped between the mounting head 120 and the main body 110, and the main body 110 and the mounting head 120 are detachably connected. In this way, when it is necessary to clean the sewage tank 600 and the suction nozzle 100, the main body 110 can be removed first, and then the mounting head 120 and the sewage tank 600 can be taken out together, and both can be cleaned and maintained separately. Since the main body 110 of this embodiment is relatively long, the main body 110 and the mounting head 120 are detachably connected, which reduces the difficulty of cleaning and maintenance. At the same time, a sealing ring 130 is provided between the main body 110 and the mounting head 120, which ensures the sealing of the fitting gap between the main body 110 and the mounting head 120, and also enables the main body 110 and the mounting head 120 to effectively become a whole. When the suction nozzle 100 rotates or swings, the deformation position is concentrated on the sealing ring 200, thereby ensuring the pressure balance in the drainage channel 160 to ensure the cleaning effect. Of course, in other embodiments, the suction nozzle 100 may be provided as an integral whole. When the sewage tank 600 and the suction nozzle 100 need to be removed for cleaning and maintenance, the sewage tank 600 and the suction nozzle 100 may be removed as a whole.

[0059] Furthermore, in this embodiment, referring to Figures 2 and 6 , the mounting head 120 is provided with a mounting opening, and a buckle 121 is provided around the periphery of the mounting opening, and the main body 110 is snapped onto the buckle 121. Thus, when the suction port 140 is subjected to force, the main body 110 transmits the force to the mounting head 120 via the sealing ring 130 and the buckle 121, so that the mounting head 120 and the main body 110 can rotate synchronously, thereby preventing the main body 110 and the mounting head 120 from loosening or even falling off during the rotation of the main body 110, thereby ensuring the cleaning effect. In addition, the main body 110 is mounted in the mounting head 120 by snapping, and the two can be connected without additional tools or complicated operations, simplifying the installation steps and improving installation efficiency. Of course, in other embodiments, the mounting head 120 and the main body 110 can also be detachably connected by screwing.

[0060] This application also proposes a cleaning device, as shown in Figure 3 . The cleaning device includes a device body and a nozzle. The specific structure of the nozzle is similar to that of the above-described embodiments. Since this cleaning device utilizes all of the technical solutions of all of the above-described embodiments, it at least has all of the beneficial effects brought about by the technical solutions of the above-described embodiments, and a detailed description thereof will not be repeated here. The device body includes a sewage tank 600 , and an outlet 150 is connected to the sewage tank 600 . Specifically, in this embodiment, the outlet 150 is located on the upper side of the sewage tank 600 .

[0061] The above description is merely an optional embodiment of the present application and does not limit the patent scope of the present application. All equivalent structural transformations made using the contents of the present application specification and drawings under the inventive concept of the present application, or direct / indirect application in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A suction nozzle, applied to a cleaning device, the cleaning device including a device main body, the device main body including a sewage tank, wherein, The suction nozzle includes: A suction nozzle with a suction port and an outlet respectively provided at both ends. A drainage channel communicating the suction port and the outlet is formed inside the suction nozzle. The outlet is configured to communicate with the sewage tank. The suction nozzle is configured to be rotatably mounted on the equipment main body to have a working position where the suction port can be maintained in contact with the surface to be cleaned; and A sealing ring provided at the outlet for sealing the mating gap between the suction nozzle and the sewage tank, and the sealing ring can elastically deform.

2. The suction nozzle according to claim 1, wherein, The rotational connection position between the suction nozzle and the equipment main body is arranged adjacent to the outlet. Define the distance from the outlet to the rotational connection position as L1, and define the distance from the suction port to the rotational connection position as L2. The L1 and L2 satisfy: L2 > L1.

3. The suction nozzle according to claim 2, wherein, The L1 and L2 satisfy: 3L1 ≤ L2 ≤ 30L1.

4. The suction nozzle according to claim 1, wherein, A guiding inclined surface is provided at the periphery of the suction port, and the guiding inclined surface extends obliquely upward in a direction away from the suction port.

5. The suction nozzle according to claim 1, wherein, A first elastic member is connected between the suction nozzle and the equipment main body. Under the action of the first elastic member, the suction nozzle can be maintained in the working position.

6. The suction nozzle according to claim 5, wherein, The first elastic member is set as a compression spring. The first elastic member is located above the rotational connection position between the suction nozzle and the equipment main body and on the side of the rotational connection position away from the suction nozzle. In the compressed state, the first elastic member is arranged obliquely downward in a direction close to the rotational connection position.

7. The suction nozzle according to claim 1, wherein, The suction nozzle further includes a mounting member. The mounting member is provided with a receiving groove. One end of the suction nozzle provided with the outlet is arranged in the receiving groove. The suction nozzle is rotatably connected to the mounting member. There are clearance spaces between the suction nozzle and the receiving groove in the vertical direction and the horizontal direction.

8. The suction nozzle according to claim 7, wherein, Guide grooves are provided on both opposite side walls of the receiving groove. The guide grooves extend in the vertical direction. Rotating shafts are respectively convexly provided on both opposite outer side walls of the suction nozzle. One rotating shaft is rotatably inserted into one guide groove and can slide along the extending direction of the corresponding guide groove.

9. The suction nozzle according to claim 8, wherein, A second elastic member is connected to the upper side of the suction nozzle. Under the action of the second elastic member, the suction nozzle has a tendency to move downward.

10. The suction nozzle according to claim 9, wherein, A plurality of the second elastic members are configured. One second elastic member correspondingly abuts above one rotating shaft; And / or, at least one second elastic member further abuts against the middle part between the two rotating shafts of the suction nozzle.

11. The suction nozzle according to claim 7, wherein, Both ends of the sealing ring are configured as a first end and a second end; A first ring groove is annularly provided on the inner peripheral side of the first end. A first ring protrusion is annularly provided on the outer peripheral side of the outlet. The first ring protrusion is tightly clamped in the first ring groove; And / or, a second ring groove is annularly provided on the outer peripheral side of the second end. The mounting member is provided with a through port opposite to the outlet. A second ring protrusion is annularly provided on the periphery of the through port. The second ring protrusion is tightly clamped in the second ring groove.

12. The suction nozzle according to any one of claims 1 to 11, wherein, The suction nozzle includes a main body part and a mounting head. The outlet is provided on the mounting head. A sealing ring is annularly provided at the connection part between the main body part and the mounting head. The sealing ring is adaptively clamped between the mounting head and the main body part. The main body part and the mounting head are detachably connected.

13. The suction nozzle according to claim 12, wherein, The mounting head is provided with a mounting opening, and a buckle is provided on the periphery of the mounting opening, and the body portion is snap-fitted to the buckle.

14. A cleaning device, wherein, The cleaning device includes a device main body and a suction nozzle as described in any one of claims 1 to 13, and the outlet is communicated with the sewage tank of the device main body.

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