A suction head

Abstract

The present invention relates to a suction head, which comprises a housing of the suction head and a roller brush. The housing is formed with a cavity for installing the roller brush. The roller brush includes a roller having a rotating shaft and bristles implanted on the roller. The suction head further includes a tool assembly. The tool assembly is mounted on the housing and extends into the cavity. The tool assembly includes a first blade and a second blade for cutting fibers on the roller brush. The first blade and the second blade are oppositely arranged on both sides of the roller brush, and they have a path for moving in the bristles along the direction of the rotating shaft of the roller. The moving paths of the first blade and the second blade have an overlapping part. The suction head of the present invention can cut off long fibers on the roller brush, and for long fibers that are difficult to cut, it can also divide them by shearing.

Description

Technical Field

[0001] The present invention relates to the field of cleaning equipment, and particularly to a suction head. Background Art

[0002] Vacuum cleaners are common cleaning equipment that can conveniently clean dust on the floor. Generally, an electric roller brush is provided in the suction head. The roller brush rotates driven by a motor, and the bristles on the roller brush sweep the dirt on the floor towards the suction port. However, during the use of the roller brush, it is found that long fibers such as hair will wind around the roller brush. And if the long fibers are not cleaned in time, the long fibers will wind more and more tightly with the rotation of the roller brush, and finally the fibers will be tightly wound around the drum for implanting the bristles. At this time, the bristles will inevitably be restricted by the fibers to deform, and even undergo plastic deformation, affecting the cleaning effect of the roller brush on the floor. Moreover, the fibers winding around the roller brush will also affect the dynamic balance and increase the resistance of the roller brush rotation, thereby increasing the energy consumption of the roller brush motor. In the existing roller brush hair cutting structure, generally, the cutting edge of the tool is set towards the drum in the roller brush, and the tool is pressed down to cut the fibers on the drum through the cutting edge. However, it will also cut the bristles on the drum. And when the cutting edge is not sharp enough, the tool will press the fibers onto the drum, causing the fibers to directly wind around the drum, making it more difficult to clean the fibers. In the prior art, a tool structure for cutting hair moving along the axis of the roller brush is also given. However, a single tool has a poor cutting ability for the fibers wound around the roller brush. It is difficult for the tool to cut the fibers with strong toughness, and it will also cause situations such as tool jamming. Summary of the Invention

[0003] The purpose of the present invention is to solve the above technical problems and provide a suction head that can cut the long fibers on the roller brush and can also cut the long fibers that are difficult to cut by shearing.

[0004] To achieve the above purpose, the technical solution of the present invention is as follows:

[0005] A suction head includes a housing of the suction head and a roller brush. The housing forms a cavity for installing the roller brush. The roller brush includes a drum having a rotation axis and bristles implanted on the drum. It further includes a tool assembly. The tool assembly is installed on the housing and extends into the cavity. The tool assembly includes a first blade and a second blade for cutting the fibers on the roller brush. The first blade and the second blade are oppositely arranged on both sides of the roller brush, and they have a path of moving in the bristles along the rotation axis direction of the drum. The moving paths of the first blade and the second blade have an overlapping part.

[0006] The suction head according to the present application has at least a first blade and a second blade. Compared with the structure of a single blade in the prior art, the first blade and the second blade require a shorter travel path during the cutting operation, making it more convenient for the user; and the moving paths of the first blade and the second blade have an overlapping part, and their moving paths are set in the direction of the rotation axis of the roller, enabling them to walk in the bristles and cut the long fibers in the bristles. For fibers that cannot provide a reaction force, have poor force-receiving effects, and are highly resilient, a single blade is difficult to cut them. This means that the two blades can cooperate with each other to form a structure similar to scissors, and cut the fibers that cannot provide a reaction force, have poor force-receiving effects, and are highly resilient in a shearing manner.

[0007] Further, the tool assembly further includes a sliding member and a spring. The first blade and the second blade are respectively installed on corresponding sliding members. A chute communicating with the cavity is provided on the housing, and the sliding member is installed to slide in the said chute. The spring imparts an elastic force for the first blade and the second blade to reset after moving. The sliding member is used to fixedly install the second blade and the second blade. Operating the sliding member can drive the blade to move for cutting and shearing the fibers. At the same time, the spring provides a reset elastic force for the first blade and the second blade, and they can automatically return to their positions under the action of the spring after cutting the fibers.

[0008] Still further, the housing is provided with a shielding structure to shield the chute. When there is liquid remaining on the roller brush, the shielding structure can prevent the liquid from being thrown out of the chute. In addition, the shielding structure itself can also play a role in shielding the chute and enhancing the aesthetics of the product.

[0009] Still further, the shielding structure is a shielding plate, and a hollow through groove is provided on the sliding member, and the shielding plate is arranged through the through groove.

[0010] Still further, the first blade and the second blade have a storage position outside the bristles. One side of the spring is connected to the housing, and the other side is connected to the first blade or the second blade, or directly connected to the sliding member installing the first blade or the second blade, providing a constraint for the first blade and the second blade to be stored in the storage position. The first tool and the second tool are stored in the storage position, and the spring constrains the first blade and the second blade in the storage position so that they do not interfere with the normal cleaning work of the bristles.

[0011] Still further, the sliding member has a part extending outside the housing. The part extending outside the housing can facilitate the user to manually operate the sliding member and the moving path of the blade manually.

[0012] Preferably, the housing has a dust suction port that communicates with the cavity; at least the path where the first blade and the second blade overlap corresponds to the dust suction port. The wind force is concentrated at the dust suction port, which can generate a greater suction force on the fibers. Cutting and shearing the fibers in this area can facilitate the sucked fibers to be inhaled into the dust suction port.

[0013] Furthermore, the housing extends into the cavity beside the dust suction port with a scraper that cooperates with the bristles.

[0014] Furthermore, the setting direction of the scraper intersects with the rotation axis direction of the roller. The scraper can scrape off the fibers that the tool assembly cannot cut, allowing the fibers scraped off by the scraper to be inhaled by the dust suction port. It can also adjust the position of the fibers wound around the bristles, enabling the fibers to be better cut by the tool assembly.

[0015] Furthermore, the cutting edges of the first blade and the second blade are set to be serrated. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a perspective view of the dust suction head of the present invention;

[0017] Figure 2 is a perspective view of the dust suction head of the present invention after removing the cover plate;

[0018] Figure 3 is a front view of the dust suction head of the present invention after removing the cover plate;

[0019] Figure 4 is a front view of the dust suction head of the present invention after removing the cover plate;

[0020] Figure 5 is Figure 4 a partial enlarged view of;

[0021] Figure 6 is a schematic diagram of the shielding structure of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0022] A dust suction head of the present invention is described in conjunction with the accompanying drawings.

[0023] Vacuum cleaners are commonly used household appliances. A rotary brush 3 is usually provided in the dust suction head of a vacuum cleaner to cooperate in sweeping dust, enabling the dust to be more conveniently sucked into the dust collection bucket of the vacuum cleaner. However, some long fibers will wind around the bristles. If the fibers on the bristles are not cleaned for a long time, during the rotation of the bristles, the fibers will wind more and more tightly around the bristles until they wind around the roller 31 for implanting the bristles, deforming the bristles and affecting the normal sweeping function of the rotary brush 3.

[0024] Such as Figures 1 to 6The suction head shown includes a housing 1 of the suction head and a roller brush 3. The housing 1 has a suction port 13. A cavity for installing the roller brush 3 is formed at the front end of the suction port 13. The roller brush 3 is rotatably installed in the cavity to sweep dust and other dirt on the bottom surface towards the suction port 13, that is, the cavity has at least an open surface corresponding to the bottom surface. The roller brush 3 includes a drum 31 having a rotating shaft and bristles implanted on the drum 31, and further includes a tool assembly 2. The tool assembly 2 is installed on the housing 1 and extends into the cavity. The tool assembly 2 includes a blade 22. The blade 22 includes a first blade 222 and a second blade 221. The first blade 222 and the second blade 221 are oppositely arranged on both sides of the roller brush 3, and they have a path of moving in the bristles along the rotating shaft direction of the drum 31. The moving paths of the first blade 222 and the second blade 221 have an overlapping part; preferably, the tool assembly 2 is arranged at a position blocked by the roller brush 3 when observed from the open surface to avoid excessive exposure of the tool and improve the safety performance of the product.

[0025] The tool assembly 2 further includes a sliding member 21 and a spring 23. The first blade 222 and the second blade 221 are respectively installed on corresponding sliding members 21. A chute 11 communicating with the cavity is provided on the housing 1. The sliding member 21 is installed to slide in the chute 11. The spring 23 gives the first blade 222 and the second blade 221 the elastic force to reset after moving. The sliding member 21 is used to fixedly install the second blade 221 and the second blade 221. Operating the sliding member 21 can drive the blade to move for operations such as cutting and shearing fibers. At the same time, the spring 23 provides the elastic force for the first blade 222 and the second blade 221 to reset, and after using the first blade 222 and the second blade 221 to cut the fibers, they can automatically return to their positions under the action of the spring 23.

[0026] A more preferred embodiment of the present invention is as Figures 1 to 5 shown. The housing 1 further includes a detachable cover plate 12. The cover body surrounds to form the cavity. It also includes a screw fixing member 212. The tool is detachably installed on the sliding member 21 through the screw fixing member 212. After the cover plate 12 is removed, the tool assembly 2 can be observed, which is convenient for operations such as replacing and installing the tool.

[0027] The sliding member 21 has an extending part 211 extending outside the housing 1. The extending part 211 can facilitate the user to manually operate the sliding member 21 and manually operate the moving path of the blade.

[0028] As Figure 4As shown, the path where the first blade 222 and the second blade 221 overlap corresponds at least to the dust suction port 13. The wind force is concentrated at the dust suction port 13, which can generate a greater suction force on the fibers. Cutting and shearing the fibers in this area can facilitate the sucked-in of the cut fibers into the dust suction port 13. In addition, the first blade 222 and the second blade 221 are also overlapped, so that when the first blade 222 and the second blade 221 move to face each other, a scissor-like overlapping structure can be formed, which can better perform the shearing operation on the fibers.

[0029] The housing 1 extends into the cavity beside the dust suction port 13 with a scraper 14 that cooperates with the bristles. The setting direction of the scraper 14 intersects with the rotation axis direction of the roller 31. The scraper 14 can scrape off the fibers that the tool assembly 2 cannot cut, and let the dust suction port 13 suck in the fibers scraped off by the scraper 14. It can also adjust the position of the fibers wound on the bristles, so that the fibers can be better cut by the tool assembly 2.

[0030] The first blade 222 and the second blade 221 have sharp edges arranged oppositely, and the sharp edges are arranged in a toothed shape. Arranging the sharp edges in a toothed shape can make the fibers more stressed at all times, which is convenient for cutting long fibers.

[0031] The first blade 222 and the second blade 221 have a storage position outside the bristles. One side of the spring 23 is connected to the housing 1, and the other side is connected to the first blade 222 or the second blade 221, or directly connected to the sliding member 21 that mounts the first blade 222 or the second blade 221, providing a constraint for the first blade 222 and the second blade 221 to be stored in the storage position. The first tool and the second tool are stored in the storage position, and the spring 23 constrains the first blade 222 and the second blade 221 in the storage position so that they do not interfere with the normal cleaning work of the bristles.

[0032] The present application also provides a more preferred embodiment. On the basis of the above embodiment, a shielding structure is provided on the housing 1 to shield the chute 11, and the shielding structure does not hinder the sliding of the sliding member 21. When there is liquid remaining on the roller brush 3, the shielding structure can prevent the liquid from being thrown out of the chute 11. Since the user needs to operate the tool assembly 2 from outside the housing 1, when the bristles rotate, the liquid on the bristles may be thrown out of the chute 11. In order to avoid the liquid from being thrown out of the housing 1, this shielding structure is provided, and the shielding structure can be a dense soft material to shield the liquid through the dense soft material.

[0033] As Figure 6As shown, another embodiment of the shielding structure is provided. The shielding structure is a shielding plate 15. The sliding member 21 includes a first member 213 and a second member 214. A hollow through groove is formed by splicing between the first member 213 and the second member 214. The shielding plate 15 is disposed through the through groove. Moreover, the shielding plate 15 can also serve as a sliding rod for restriction to restrict the sliding member 21 to slide along the shielding plate 15 and the chute 11. The second member 214 fixes the blade 22.

[0034] According to the suction head of the present application, it has at least a first blade and a second blade. Compared with the structure of a single blade in the prior art, the traveling path required during the cutting operation of the first blade and the second blade is shorter, and it is relatively more convenient for the user to use. Moreover, there is an overlapping part in the moving paths of the first blade and the second blade, and their moving paths are set in the direction towards the rotation axis of the drum, enabling them to walk in the bristles and cut the long fibers in the bristles. For fibers that cannot provide a reaction force, have poor force-receiving effects, and have high toughness, it is difficult for a single blade to cut them. This means that the two blades can cooperate with each other to form a structure similar to scissors to cut the fibers that cannot provide a reaction force, have poor force-receiving effects, and have high toughness in a shearing manner.

[0035] Based on the disclosure and teachings of the above specification, those skilled in the art to which the present invention pertains can also make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should also fall within the protection scope of the claims of the present invention. In addition, although some specific terms are used in this specification, these terms are only for convenience of description and do not constitute any limitation to the present invention.

Claims

1. A suction head, comprising a housing of the suction head and a roller brush, wherein the housing forms a cavity for installing the roller brush, and the roller brush comprises a roller having a rotating shaft and bristles implanted on the roller, characterized in that, It further includes a tool assembly which is mounted on the housing and extends into the cavity. The tool assembly includes a first blade and a second blade for cutting the fibers on the roller brush. The first blade and the second blade are oppositely arranged on both sides of the roller brush. The cutting edges of the first blade and the second blade are serrated, and they have a path for moving in the bristles along the rotation axis direction of the roller. The moving paths of the first blade and the second blade have an overlapping part. The first blade and the second blade walk in the bristles to cut the long fibers in the bristles. When the first blade and the second blade move to face each other, a scissor-like overlapping structure is formed to perform a shearing operation on the fibers. The tool assembly further includes a spring which gives the first blade and the second blade the elastic force to reset after moving. The tool assembly further includes a slider. The first blade and the second blade are respectively mounted on the corresponding sliders. A chute communicating with the cavity is provided on the housing, and the slider is mounted to slide in the chute.

2. The suction head according to claim 1, characterized in that, The housing is provided with a shielding structure to shield the chute.

3. The suction head according to claim 2, characterized in that, The shielding structure is a baffle plate. A hollow through groove is provided on the slider, and the baffle plate is arranged through the through groove.

4. The suction head according to claim 1, characterized in that, The first blade and the second blade have a storage position outside the bristles. One side of the spring is connected to the housing, and the other side is connected to the first blade or the second blade, or directly connected to the slider mounting the first blade or the second blade, providing a constraint for the first blade and the second blade to be stored in the storage position.

5. The suction head according to claim 1, characterized in that , The slider has a part extending outside the housing.

6. The suction head according to claim 1, wherein The housing has a dust suction port which communicates with the cavity. The overlapping path of the first blade and the second blade corresponds at least to the dust suction port.

7. The suction head according to claim 6, wherein The housing extends into the cavity beside the dust suction port with a scraper cooperating with the bristles.

8. The suction head according to claim 7, characterized in that, The setting direction of the scraper intersects with the rotation axis direction of the roller.

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