WO2022170667A1 - 一种滚刷体、滚刷、吸尘设备及滚刷体的成型方法 - Google Patents

一种滚刷体、滚刷、吸尘设备及滚刷体的成型方法 Download PDF

Info

Publication number
WO2022170667A1
WO2022170667A1 PCT/CN2021/082542 CN2021082542W WO2022170667A1 WO 2022170667 A1 WO2022170667 A1 WO 2022170667A1 CN 2021082542 W CN2021082542 W CN 2021082542W WO 2022170667 A1 WO2022170667 A1 WO 2022170667A1
Authority
WO
WIPO (PCT)
Prior art keywords
rolling brush
brush body
groove
outer core
rib
Prior art date
Application number
PCT/CN2021/082542
Other languages
English (en)
French (fr)
Inventor
倪健
梁永祥
Original Assignee
莱克电气股份有限公司
苏州金莱克精密模具科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 莱克电气股份有限公司, 苏州金莱克精密模具科技有限公司 filed Critical 莱克电气股份有限公司
Publication of WO2022170667A1 publication Critical patent/WO2022170667A1/zh

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L5/00—Structural features of suction cleaners
    • A47L5/12—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum
    • A47L5/22—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum with rotary fans
    • A47L5/36—Suction cleaners with hose between nozzle and casing; Suction cleaners for fixing on staircases; Suction cleaners for carrying on the back
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/02—Nozzles
    • A47L9/04—Nozzles with driven brushes or agitators
    • A47L9/0405—Driving means for the brushes or agitators
    • A47L9/0411—Driving means for the brushes or agitators driven by electric motor
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds

Definitions

  • the invention relates to the technical field of dust suction equipment, in particular to a rolling brush body, a rolling brush, dust suction equipment and a method for forming the rolling brush body.
  • a vacuum cleaner is a cleaning device that uses a motor to drive the blades to rotate at a high speed and generate negative air pressure in a sealed casing to absorb dust.
  • a roller brush is arranged in the vacuum cleaner, and the dust is raised by the roller brush rotating and beating the ground, thereby improving the vacuuming effect.
  • the rolling brush includes a rolling brush body and a brush body, and the brush body is arranged on the outer wall of the rolling brush body and extends in a spiral shape.
  • the existing rolling brush body is generally a solid structure, which results in a large weight of the rolling brush body and a large energy consumption when the rolling brush rotates.
  • Part of the rolling brush body is a hollow structure.
  • the outer circle of the rolling brush body is provided with a convex part, and the convex part is provided with a T-shaped groove matched with the brush body.
  • Part of the rolling brush body is concave inward to form a groove, but in order to ensure the depth of the groove, the diameter of the inner hole of the rolling brush body is small, which makes the wall thickness of the rolling brush body thicker, and the weight of the rolling brush body is still large, which leads to consumption. Can be big.
  • the purpose of the present invention is to provide a rolling brush body, a rolling brush, a dust suction device and a forming method of the rolling brush body, which can solve the problems of heavy weight and high energy consumption of the existing rolling brush body.
  • a rolling brush body is used for installing a cleaning element to form a rolling brush
  • the rolling brush body comprises a hollow cylinder
  • the inner wall of the cylinder is provided with a first protruding and spirally extending first cylinder.
  • a convex rib the outer wall of the cylindrical body corresponding to the first convex rib is concave to the inside of the first convex rib to form a spirally extending groove
  • the groove is used for installing the cleaning element
  • the groove It has a first width and a second width arranged from the inside to the outside along the radial direction of the cylindrical body, and the first width is larger than the second width.
  • the groove is an inverted T-shaped groove or a dovetail groove.
  • the outer diameter of the cylinder is 40mm-60mm.
  • the wall thickness of the rolling brush body is 2mm-4mm.
  • the groove includes a first groove section and a second groove section that communicate with each other, and the helical parameters of the first groove section and the second groove section are different;
  • the first rib includes a connected first extension section and a second extension section, the first extension section corresponds to the position of the first groove section and has the same helical parameters, and the second extension section is the same as the first groove section.
  • the positions of the two groove segments are corresponding and the helical parameters are the same.
  • the helix parameters include helix pitch, helix angle and/or helix direction.
  • spiral directions of the first groove segment and the second groove segment are opposite.
  • the shape of the groove extending into the first rib is adapted to the shape of the first rib.
  • the rolling brush body is injection-molded, and the outer contour surface of the rolling brush body includes a first forming surface and a second forming surface that are arranged and connected in the axial direction.
  • the first forming surface and the second forming surface The junction forms a clip line.
  • the rolling brush body includes two sections of the first forming surfaces, the second forming surfaces are located between the two sections of the first forming surfaces and are respectively connected with the two sections of the first forming surfaces, and the second forming surfaces are located between the two sections of the first forming surfaces.
  • the clamping line is formed at the connection between the two forming surfaces and each of the first forming surfaces.
  • the clamping line includes a first line segment extending spirally and a second line segment extending along the circumferential direction of the cylinder, the first line segment being parallel to the spiral direction of the groove, and the first line segment is parallel to the helical direction of the groove.
  • the ends of the segments are connected to the second line segments.
  • the two first line segments and the two second line segments are alternately connected to form the second molding surface, and the second molding surface is located on the side of the groove.
  • the inner wall of the cylinder body protrudes toward the cylinder body and has a second ridge extending spirally;
  • the outer wall of the cylinder body protrudes toward the outside of the cylinder body and has a second ridge extending spirally.
  • the second rib is arranged on the inner wall of the cylinder, and a reference blind hole is provided on the outer wall of the barrel at a position corresponding to the second rib, and the reference blind hole can be processed into Plant pores.
  • a plurality of the reference blind holes are provided, and the plurality of the reference blind holes are arranged along the helical direction of the second rib.
  • the outer wall of the cylindrical body corresponding to the second convex rib is concave to the inside of the second convex rib to form a concave portion, and the concave portion spirally extends around the axis of the cylindrical body.
  • the opening of the concave portion gradually increases along the radial direction of the cylindrical body away from the axial direction of the cylindrical body.
  • first ridges and second ridges there are at least two first ridges and second ridges, and the first ridges and the second ridges are alternately arranged and evenly spaced along the circumference of the cylinder,
  • the grooves are provided on the outer wall of the cylinder at positions corresponding to each of the first protruding ribs.
  • a rolling brush includes a cleaning member and the above-mentioned rolling brush body, wherein the cleaning member is clamped in the groove.
  • a dust suction device includes a floor brush assembly, wherein the floor brush assembly includes a housing and the above-mentioned roller brush, and the roller brush is rotatably arranged in the housing.
  • a method for forming a rolling brush body which is applied to an injection mold for processing the above rolling brush body, the rolling brush body is injection-molded by the injection mold, and the injection mold includes an outer core and a The inner core inside the outer core, when the inner core and the outer core are in the molding position, a molding cavity is formed therebetween, and the outer core is provided with a groove forming edge for forming the groove , the inner core is provided with a first rib forming groove for forming the first rib;
  • the molding method includes:
  • an injection molding step injecting injection molding material into the molding cavity
  • both the groove forming rib and the first convex rib forming groove are separated from the formed rolling brush body through a spiral motion.
  • the outer core includes a first outer core and a second outer core
  • the second outer core includes at least two clamping portions arranged along the circumferential direction of the rolling brush body
  • the groove forming rib is provided on the On the inner wall of the first outer core, when the clamping portion and the first outer core are in the molding position, the outer core is formed by splicing together; when the formed rolling brush body is formed in the molding cavity, at least two each of the clamping parts clamps the rolling brush body;
  • the demoulding step includes:
  • the first outer core demoulding step the first outer core spirally moves around the axis of the rolling brush body to be separated from the rolling brush body;
  • the inner core is spirally moved around the axis of the rolling brush body to be separated from the rolling brush body;
  • At least two of the clamping portions face away from the rolling brush body along the radial direction of the rolling brush body, so as to be separated from the rolling brush body.
  • the outer core includes two first outer cores, and the clamping portion is located between the two first outer cores and can be spliced with the two first outer cores respectively;
  • the two first outer cores spirally move at the same time, and move toward both ends of the axis of the rolling brush body respectively.
  • the inner core includes two inner core shafts, and the two inner core shafts can be spliced along the axial direction;
  • the two inner core shafts spirally move at the same time, and move to both ends of the axis of the rolling brush body respectively.
  • the inner core and the outer core are moved to the molding position.
  • the injection molding step before the injection molding step, it also includes: a mold clamping step, and the mold clamping step includes:
  • the first outer core is spirally moved until the first outer core is spliced with the clamping portion to form the outer core, and the inner core is inserted into the outer core through the spiral movement until the molding is formed. cavity.
  • the present invention provides a rolling brush body, a rolling brush, a dust suction device and a forming method of the rolling brush body.
  • the cylindrical body has a hollow structure and is light in weight, which can reduce the energy consumption required for the rolling brush body to rotate; the inner wall of the cylindrical body is provided with a first convex edge to provide sufficient depth space for the groove to improve The fixing effect of the brush body; in addition, the radial dimension of the rolling brush body can be reduced by recessing the groove into the cylinder body, and the outer circular surface of the rolling brush body can be set as a smooth surface to avoid dust accumulation and also help Molded manufacturing.
  • FIG. 1 is a schematic structural diagram of a vacuum cleaner provided in Embodiment 1 of the present invention.
  • FIG. 2 is a schematic structural diagram of another vacuum cleaner provided in Embodiment 1 of the present invention.
  • Embodiment 3 is a schematic structural diagram of a rolling brush body provided in Embodiment 1 of the present invention.
  • FIG. 5 is a schematic diagram of a certain cross-section of the first rolling brush body provided in Embodiment 1 of the present invention.
  • FIG. 6 is a schematic diagram of a certain cross-section of the second type of rolling brush body provided in Embodiment 1 of the present invention.
  • FIG. 7 is a schematic diagram of a certain cross-section of a third type of rolling brush body provided in Embodiment 1 of the present invention.
  • Embodiment 8 is an exploded view of a mold for forming a roller brush body provided by Embodiment 1 of the present invention.
  • Embodiment 9 is a schematic structural diagram of a first outer core provided in Embodiment 1 of the present invention.
  • FIG. 10 is a partial structural schematic diagram of the second outer core provided in Embodiment 1 of the present invention.
  • FIG. 11 is a cross-sectional view of the outer core, the inner core and the rolling brush body for forming the first type of rolling brush body provided in Embodiment 1 of the present invention in a state in which they are matched;
  • FIG. 12 is a cross-sectional view of the outer core and the inner core for forming the first type of rolling brush body provided in Embodiment 1 of the present invention in a state in which the outer core and the inner core are matched;
  • FIG. 13 is a schematic diagram of the clamping line on the roller brush body provided in Embodiment 1 of the present invention.
  • FIG. 14 is a schematic structural diagram of a third type of rolling brush body provided in Embodiment 1 of the present invention.
  • 15 is a cross-sectional view of the outer core and the inner core of the third type of rolling brush body provided in the first embodiment of the present invention in a state where the outer core and the inner core are matched;
  • 16 is a schematic structural diagram of the first rolling brush body provided in the second embodiment of the present invention.
  • FIG. 17 is a schematic diagram of the clamping line on the first roller brush body provided by the second embodiment of the present invention.
  • 19 is a schematic structural diagram of the second type of roller brush body provided by the second embodiment of the present invention after the punching process;
  • FIG. 20 is a schematic structural diagram of a roller brush made of the second type of roller brush body provided by Embodiment 2 of the present invention.
  • FIG. 21 is a schematic structural diagram of a mold for forming a rolling brush body provided by Embodiment 2 of the present invention.
  • FIG. 22 is a schematic structural diagram of the injection mold provided in Embodiment 3 of the present invention in a clamping state
  • Embodiment 23 is a schematic structural diagram of the injection mold provided in Embodiment 3 of the present invention when the first outer core is in a demolded state;
  • FIG. 24 is a schematic structural diagram of the injection mold provided in Embodiment 3 of the present invention when the first outer core and the inner core are in a demolded state;
  • FIG. 25 is a schematic structural diagram of the injection mold provided in the third embodiment of the present invention in a demolded state.
  • Vacuuming equipment 110.
  • Floor brush assembly 120. Shaft;
  • Rolling brush body 11. Cylinder body; 111, groove; 1111, first groove segment; 1112, second groove segment; 112, first line segment; 113, second line segment; 114, first forming surface; 115, the second molding surface; 116, the third line segment; 117, the concave part; 1171, the planting hole; 12, the first ridge; 13, the second ridge; 2, the brush body;
  • the terms “installed”, “connected”, “connected” and “fixed” should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection; it may be a mechanical connection, or a It can be an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be an internal connection between two elements or an interaction relationship between the two elements.
  • installed should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection; it may be a mechanical connection, or a It can be an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be an internal connection between two elements or an interaction relationship between the two elements.
  • a first feature "on” or “under” a second feature may include the first feature and the second feature in direct contact, or may include the first feature and the second feature not in direct contact Rather, they are contacted by additional features between them.
  • the first feature being “above”, “over” and “above” the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is level higher than the second feature.
  • the first feature is "below”, “below” and “below” the second feature includes the first feature being directly below and diagonally below the second feature, or simply means that the first feature has a lower level than the second feature.
  • the present embodiment provides a dust suction device 100 .
  • the dust suction device 100 is provided with a dust suction channel and a fan.
  • the dust suction device 100 is provided with a dust suction inlet, and a roller brush is rotated at the dust suction inlet.
  • the fan When the fan is working, it can change the air pressure in the dust suction channel, so that a pressure difference is formed inside and outside the dust collector 100, and the dust outside the dust collector 100 enters the dust suction channel from the dust suction inlet under the action of the air pressure difference, so as to achieve dust removal. cleaning purpose.
  • the roller brush rotates at the vacuuming inlet, and by beating the surface to be vacuumed, the dust on the surface to be vacuumed can be lifted up, thereby improving the vacuuming effect.
  • the vacuum cleaner 100 may be a vacuum cleaner or a cleaning robot, wherein the vacuum cleaner may be the vertical vacuum cleaner shown in FIG. 1 or the horizontal vacuum cleaner shown in FIG. 2 .
  • the vacuum cleaner 100 is described by taking a vacuum cleaner as an example.
  • the vacuum cleaner includes a shaft 120, a gripping portion disposed at one end of the shaft 120, and a floor brush assembly 110 disposed at the other end of the shaft 120.
  • the floor brush assembly 110 includes a housing, and the bottom surface of the housing is provided with a dust suction inlet.
  • a dust collecting port is also arranged on the top, and the dust collecting port is communicated with the dust collecting container in the vacuum cleaner. The dust on the ground carried by the airflow passes through the dust suction inlet and the dust collection port in turn and then enters the dust collection container.
  • the rolling brush includes a rolling brush body 1 and a cleaning member 2 arranged on the rolling brush body 1 .
  • the rolling brush body 1 is used to install the cleaning member 2
  • the cleaning member 2 is installed with the rolling brush body 1 .
  • the rotation of the brush body 1 plays the role of beating the surface to be vacuumed, thereby raising the dust and improving the vacuuming effect.
  • the cleaning element 2 extends spirally around the axis of the roller brush body 1, and can guide the airflow to flow along the extension direction of the cleaning element 2 on the basis of beating the surface to be vacuumed, and then guide the airflow to carry dust into the dust collection port. .
  • the cleaning element 2 extends in a spiral shape. Compared with the linear extension of the cleaning element 2 along the axis of the roller brush body 1, the contact area and instantaneous force between the cleaning element 2 and the ground at each moment can be reduced, and particulate matter on the ground can be avoided. Due to the force of the cleaning element 2, it is blown up, so as to prevent the enlarged and hard particles from being blown up to injure the user or damage the furniture, and at the same time avoid the reduction of the cleaning efficiency caused by the dust detaching from the vacuum adsorption area of the floor brush assembly 110. question.
  • the cleaning member 2 may be a brush or a leather strap. Both the brush and the leather strip are flexible, the brush is used to clean the carpet, and the leather strip can be used to clean the floor.
  • the cleaning element 2 and the roller brush body 1 can be connected by injection molding or fixed by adhesive. Because the cleaning element 2 has a certain flexibility, its material is different from that of the roller brush body 1. When the cleaning element 2 is connected to the roller brush body 1 by injection molding, the cleaning element 2 and the roller brush body 1 need to be injection-molded with a two-color mold. lead to higher costs. However, the adhesive fixing strength is poor, and the cleaning member 2 is easily detached from the roller brush body 1, which affects the user's experience.
  • the cleaning member 2 can be clamped and fixed with the rolling brush body 1 .
  • the brush body 1 includes a hollow cylindrical body 11 .
  • the outer wall of the cylindrical body 11 is recessed inward to form a groove 111 for installing the cleaning element 2 .
  • the groove 111 extends spirally.
  • the groove 111 For snap-on cleaning element 2.
  • the hollow cylinder body 11 can reduce the weight of the rolling brush body 1, thereby reducing the energy consumption required for the rolling brush body to rotate; thereby saving costs.
  • the inner wall of the cylinder body 11 is provided with a first convex rib 12 that protrudes and extends spirally toward the interior of the cylinder body 11.
  • the position of a rib 12 corresponds to and extends to the inside of the first rib 12 , and the depth requirement of the groove 111 is satisfied by arranging the first rib 12 .
  • the first protruding rib 12 is arranged on the inner wall of the cylinder body 11 in the present invention, which can ensure that the surface of the outer wall of the cylinder body 11 is regular , to avoid dust accumulation.
  • the groove 111 In order to facilitate the fixing of the cleaning element 2 and the roller brush body 1, at least one end of the groove 111 in the longitudinal direction penetrates the axial end face of the cylindrical body 11, and the groove 111 has a first width and The second width, the first width is greater than the second width.
  • both ends of the groove 111 penetrate through the end surface of the cylinder body 11, so that the cleaning element 2 can be inserted into the groove 111 from either end, and the installation is convenient.
  • the groove 111 is an inverted T-shaped, which includes a first groove and a second groove that are connected.
  • a groove is located on the side of the second groove close to the axis of the cylinder 11 .
  • the cross-sectional shapes of the first slot and the second slot are both rectangular, the width of the first slot remains unchanged along the radial direction of the cylinder 11 , and the width of the second slot remains unchanged along the radial direction of the cylinder 11 .
  • the width of the first groove body is the first width M
  • the width of the second groove body is the second width N
  • the first width M is greater than the second width N, so that the opening of the groove 111 presents a closing trend, which can prevent the cleaning 2 is released from the groove 111.
  • the second groove body has a certain depth along the radial direction of the cylindrical body 11 , and two opposite sides of the second groove body can abut with the cleaning member 2 , which helps to limit the cleaning member 2 in the circumferential direction of the cylindrical body 11 .
  • the movement makes the fixing of the cleaning element 2 more reliable and helps to improve the cleaning effect.
  • the groove 111 may have multiple sections of the first groove body and/or multiple sections of the second groove body.
  • the width of the groove 111 can be changed abruptly, and can also be gradually changed from the first width M to the second width N.
  • the groove 111 is divided into multiple sections along the radial direction of the cylinder body 11 , and a transition step surface is formed between two adjacent sections, which can limit the position of the cleaning member 2 .
  • the groove 111 can be a dovetail groove, or as shown in FIG.
  • the inner wall of the groove 111 has a restricting effect on the cleaning member 2 and can prevent the cleaning member 2 from coming out of the groove 111 .
  • the shape of the groove 111 is not limited to the above-mentioned shape, as long as the width of the groove 111 varies, and the wider first width is located on the side of the narrower second width close to the axis of the cylinder 11 . .
  • the shape of the groove 111 protruding into the first rib 12 can be matched with the shape of the first rib, so that the wall thickness formed by the first rib 12 and the groove 111 is uniform, which is beneficial to keep rolling.
  • the wall thickness of the cylindrical body 11 may be approximately the same as the wall thickness corresponding to the first convex edge 12 , which can further ensure the dynamic balance during the rotation of the rolling brush body 1 .
  • the part of the groove 111 extending into the first rib 12 is referred to as the fitting groove section 1111
  • the part of the groove 111 penetrating the outer wall of the cylinder 11 is referred to as the penetration section 1112 .
  • the shape of the matching groove section 1111 is the same as the shape of the rib.
  • the surface of the matching groove section 1111 on the side away from the axis of the cylinder body 11 is the top surface, and the surface on the side close to the axis of the cylinder body 11 is the bottom surface.
  • the top surface of the groove section 1111 is substantially coplanar with the inner surface of the cylindrical body 11 , and the distance between the bottom surface of the matching groove section 1111 and the side surface of the first rib 12 facing the axis of the cylindrical body 11 is approximately equal to the cylindrical body 11 wall thickness.
  • the wall thickness of the rolling brush body 1 is 2-4 mm, and the wall thickness of the rolling brush body 1 is within this range, which can not only meet the strength requirements of the rolling brush body 1, but also keep the outer diameter of the rolling brush body unchanged.
  • the cost and the energy consumption of the rolling brush body 1 during operation are controlled.
  • the wall thickness of the roller brush body 1 may be 2 mm, 2.3 mm, 2.5 mm, 2.7 mm, 3 mm, 3.3 mm, 3.5 mm, 3.7 mm, 4 mm.
  • the rolling brush body is generally extruded through an extrusion die, and then twisted and formed.
  • the existing roller brush body includes a solid shaft body and an installation structure (the installation structure is a rib or a groove) provided on the shaft body and extending in the axial direction. After the shaft body and the installation structure are formed by extrusion process, opposite torques are applied to both ends of the shaft body, so that the shaft body drives the installation structure to twist around the axis of the shaft body, so that the installation structure extends spirally.
  • the material selected for the rolling brush body needs to have a certain degree of flexibility, resulting in insufficient strength of the rolling brush body and affecting the cleaning effect; and in order to avoid excessive deformation of the rolling brush body during torsion, the shaft The body can only be a solid structure. If the shaft body is a hollow cylinder, the hollow cylinder is easy to collapse during the torsion process, resulting in scrap.
  • the outer diameter of the shaft body is generally small, and the produced roller brush body can only be used in small-sized dust collectors.
  • the rolling brush body 1 is formed by injection molding.
  • the material strength of the rolling brush body 1 is good, which can meet the needs of use;
  • the rolling brush body 1 can be a hollow structure, which can not only reduce the cost, but also reduce the energy consumption of the rolling brush body 1 during operation;
  • the size of the injection-molded rolling brush body 1 It can be set according to actual needs, which solves the problem that the size of the rolling brush body 1 is limited.
  • the outer diameter of the cylindrical body 11 may be 40mm-60mm, specifically 40mm, 42mm, 45mm, 47mm, 49mm, 50mm, 52mm, 55mm, 57mm, 59mm, 60mm.
  • the mold 200 for forming the roller brush body 1 includes an outer core 21 and an inner core 22 .
  • the inner core 22 is inserted into the outer core 21 and between the inner core 22 and the outer core 21 .
  • There is a cavity for forming the rolling brush body 1 and the outer wall of the inner core 22 and the inner wall of the outer core 21 are the forming surfaces for forming the inner wall of the rolling brush body 1 and the outer wall of the rolling brush body 1 respectively.
  • the inner core 22 is provided with a rib forming groove for forming the first rib 12
  • the outer core 21 is provided with a groove forming rib 2111 for forming the groove 111 .
  • the inner core 22 includes an inner core shaft 221 and an end sealing block 222, and the end sealing block 222 is used for abutting with the ends of the inner core shaft 221 and the outer core 21 to close the molding cavity.
  • the traditional injection mold includes a fixed mold and a movable mold. After the fixed mold and the movable mold are close to each other, a molding cavity is formed between them. After the fixed mold and the movable mold are separated from each other, the mold is separated from the molded product. If the molded product includes an inner hole, the injection mold also includes a core body, and the core body is arranged in the cavity for forming the inner hole; during demolding, the core body is pulled out along the axial direction of the inner hole to realize demoulding.
  • the inner wall of the cylinder body 11 is provided with a first rib 12 extending helically. Due to the interference of the first rib 12, the inner core of the inner wall structure of the cylinder body 11 cannot be moved along the axial direction of the cylinder body 11. way to disengage from the barrel 11.
  • both the ridge forming groove and the groove forming rib 2111 are demolded along the axial direction of the rolling brush body 1 by means of a spiral motion.
  • both the outer core 21 and the inner core 22 are demolded by a spiral motion, when one of the outer core 21 and the inner core 22 is separated from the rolling brush body 1 through a spiral motion, the rolling brush body 1 needs to be Keep it still, so that the other of the outer core 21 and the inner core 22 can move relative to the rolling brush body 1, so as to perform demolding.
  • the outer core 21 includes a first outer core 211 and a second outer core spliced with the axial end of the first outer core 211
  • the second outer core includes a roller brush along the At least two clamping parts 212 spliced in the circumferential direction of the body 1
  • the at least two clamping parts 212 can be relatively close to be spliced with the first outer core 211, or they can be away from each other in the radial direction of the rolling brush body 1, so as to be compatible with other parts.
  • the inner roller brush body 1 is separated.
  • the second outer core does not move, so as to keep the rolling brush body 1 in position through the spiral mating surface between the second outer core and the rolling brush body 1; on this basis, the first outer core 211 and the inner mold
  • the core 22 is spirally demolded around the axis of the roller brush body 1 .
  • the rolling brush body 1 After the first outer core 211 and the inner core 22 are separated from the rolling brush body 1, at least two clamping sections in the second outer core are separated, and the rolling brush body 1 will be directly separated from the first outer core 211, and no The product is ejected, which further simplifies the demoulding process.
  • the first outer core 211 is a shaft sleeve structure, the inner wall of which is used to form the outer wall of the rolling brush body 1 , the inner wall of the first outer core 211 is provided with groove forming ribs 2111 , and the groove is formed
  • the rib 2111 extends along the helical direction, and the shape of the outer contour matches the shape of the groove 111 .
  • One end of the first outer core 211 is provided with a splicing groove 2112 for splicing and matching with the clamping portion 212 , and the splicing groove 2112 extends along the helical direction of the groove 111 in the axial direction.
  • FIG. 9 the first outer core 211 is a shaft sleeve structure, the inner wall of which is used to form the outer wall of the rolling brush body 1 , the inner wall of the first outer core 211 is provided with groove forming ribs 2111 , and the groove is formed
  • the rib 2111 extends along the helical direction, and the shape
  • the clamping portion 212 in the second outer core extends along the helical direction of the groove 111 , so that when the first outer core 211 moves helically, the splicing groove 2112 on the first outer core 211 can be helical It is sleeved on the outside of the clamping part 212 to realize the splicing cooperation between the clamping part 212 and the splicing groove 2112 .
  • the second outer core includes four clamping portions 212 , and the four clamping portions 212 are evenly spaced along the circumference of the cylinder body 11 .
  • the first outer core 211 is provided with four splicing grooves 2112 , each clamping portion 212 can be spliced with the corresponding splicing groove 2112 , so that the first outer core 211 and the second outer core cooperate to form a complete outer wall of the rolling brush body 1 .
  • the number of the clamping parts 212 can also be set to two, three, or more than four, as long as the rolling brush body 1 can be fixed, and the specific number can be set according to actual needs.
  • the inner core 22 includes an inner mandrel 221 .
  • the outer wall of the inner mandrel 221 is provided with a first rib forming groove 2211 , and the first rib forming groove 2211 extends along the helical direction, and its The shape is adapted to the shape of the outer contour of the first rib 12 .
  • the outer contour surface of the rolling brush body 1 includes the first forming surface 114 and the second forming surface 115 extending and connecting in the axial direction.
  • a molding surface 114 is formed by the first outer core 211
  • the second molding surface 115 is formed by the second outer core. Since the first molding surface 114 and the second molding surface 115 are respectively formed by two-stage outer cores, a clamping line is formed between the first molding surface 114 and the second molding surface 115 .
  • the clip line is a raised structure formed on the roller brush body 1 at the corresponding position of the connection between the two adjacent outer cores, that is, there will be a certain splicing gap between the adjacent two outer cores. Leads to residual splicing marks on the molded product.
  • the specific shape of the clamping line on the roller brush body 1 is related to the splicing gap of the outer core type.
  • the clamping line includes a first line segment 112 extending helically and a second line segment 113 extending along the circumferential direction of the cylinder body 11 .
  • the first line segment 112 is parallel to the helical direction of the groove 111
  • the first line segment 112 The end of is connected with the second line segment 113 .
  • the clamping portion 212 has an abutting surface that clamps the rolling brush body 1 and forms a part of the outer peripheral surface of the rolling brush body 1 , and the abutting surface includes two first and second threads parallel to the spiral direction of the groove 111 .
  • An edge 2121 and two second edges 2122 extending around the circumference of the cylindrical body 11 .
  • the two first edges 2121 and one of the second edges 2122 are matched with the splicing groove 2112.
  • the first line segment 112 is formed between the first edge 2121 and the side wall of the splicing groove 2112, and the second edge 2122 is connected to the splicing groove 2112.
  • a second line segment 113 is formed between the seams.
  • a second line segment 113 is correspondingly formed between the other second edge 2122 and the end sealing block 222 .
  • the two first line segments 112 and the two second line segments 113 are alternately connected to form a second molding surface 115 , and the second molding surface 115 is located on the side of the groove 111 .
  • the clamping line also includes a third line segment 116.
  • the roller brush body 1 forms a third line segment 116 corresponding to the splicing of the outer core 21 and the end sealing block 222.
  • the third line segment 116 overlaps with the second line segment 113.
  • the end 116 is located at one end face of the roller brush body 1 and extends along the outer contour of the end face.
  • the groove forming edges 2111 of the forming groove 111 are located on the first outer core 211 to ensure that the first outer core 211 can be demolded in a spiral manner, and the second outer core 211 can be demolded in a spiral manner.
  • Each clamping portion 212 in the middle can be demolded by moving away from each other.
  • the cleaning member 2 on the rolling brush body 1 includes a leather strip and a brush, the leather strip is fastened and fixed by the groove 111 , and the brush is fixed on the rolling brush body 1 by means of flocking. Brushes are used to clean carpets.
  • the brush includes multiple tufts of bristles, each tuft of bristles is implanted on the outer wall of the roller brush body 1, and the multiple tufts of bristles are spirally arranged to form a brush.
  • the inner wall or the outer wall of the cylinder body 11 is protruded with a second rib 13 extending helically, and multiple tufts of bristles are placed on the roller brush body 1 and the second rib 13. at the corresponding location.
  • the wall thickness of the brush body 1 at the place where the bristles are implanted can be increased, the depth of the bristles can be ensured, the bristles can be prevented from falling off, and the influence of the pores of the implanted pores on the strength of the brush body 1 can be reduced, thereby improving the strength of the brush body 1. overall strength.
  • the second ridges 13 are arranged on the inner wall of the cylinder body 11 .
  • the second rib 13 is disposed on the inner wall of the cylinder body 11, which can also prevent the outer wall of the cylinder body 11 from having a structure protruding outwards, thereby avoiding hair entanglement and dust accumulation at the protruding structure.
  • a concave portion 117 is provided on the outer wall of the cylindrical body 11 at a position corresponding to the second protruding rib 13 , and the concave portion 117 spirally extends around the axis of the cylindrical body 11 .
  • the cross-sectional size of the concave portion 117 gradually increases along the radial direction of the cylindrical body 11 toward the direction away from the axis of the cylindrical body 11 .
  • the injection mold for forming the roller brush body 1 shown in FIG. 14 is shown in FIG. 15
  • the outer core 21 is also provided with a concave molding rib 2123 for molding the concave portion 117
  • the inner core 22 is provided with a molding second The second rib forming groove 2212 of the rib 13 .
  • part of the concave molding rib 2123 is provided on the clamping portion 212 .
  • a reference blind hole is provided on the outer wall of the cylinder body 11 at a position corresponding to the second convex edge 13 .
  • the outer core 21 is provided with a positioning convex column at the position corresponding to the second convex edge 13 , and the positioning convex column can form a reference blind hole on the outer wall of the rolling brush body 1 .
  • the reference blind hole is integrally formed with the cylinder body 11 and can be used as the reference blind hole of the planting hole.
  • the planting hole is formed by reprocessing the standard blind hole, which is used to fix the bristles and improve the precision of the planting.
  • the positioning protrusions are arranged on the second outer core, which can not only form the reference blind hole, but also improve the fixing effect between the second outer core and the rolling brush body 1, and prevent the first outer core 211 and the inner core 22 from being screwed off.
  • the roller brush body 1 is driven to move.
  • a plurality of reference blind holes are provided, and the plurality of reference blind holes are arranged along the helical direction of the second rib, so as to guide the direction of the tufts of bristles.
  • first ridges 12 and second ridges 13 may be provided, and the first ridges 12 and the second ridges 13 are alternately arranged along the circumference of the cylinder body 11 .
  • the edges 12 are provided with grooves 111 correspondingly, so that the brushes and the leather strips are alternately distributed, which is beneficial to improve the cleaning effect.
  • the at least two first ridges 12 and the at least two second ridges 13 can be distributed evenly at intervals, so that the mass distribution of the rolling brush body 1 is more symmetrical, and the rolling brush body 1 can be prevented from shaking when it rotates.
  • the brushes in the roller brush cannot be fixed on the roller brush body by flocking, because the bristles in the brush are arranged in a single or a single strip, and the bristles can be in a sheet-like structure or a cylindrical structure.
  • a single cylindrical bristle or a single sheet of bristle has soft feet, and it is difficult to operate with flocking and has poor precision.
  • the brush further includes a mounting portion on which a plurality of bristles are arranged, and the mounting portion is mounted in the groove 111, thereby realizing the fixing of the brush.
  • This embodiment provides a dust suction device.
  • the rolling brush body 1 is further improved to improve the dust collecting effect of the rolling brush body 1 .
  • the groove 111 includes a first groove segment 1111 and a second groove segment 1112 that communicate with each other, and the helical parameters of the first groove segment 1111 and the second groove segment 1112 are different, so that the groove 111 as a whole is Variable spiral structure for better dust removal according to the needs of use.
  • the first rib 12 includes a connected first extension section and a second extension section, the first extension section corresponds to the position of the first groove section 1111 and has the same helical parameters, and the second extension section and the second groove section 1112 have the same position. The positions are corresponding and the helical parameters are the same to ensure the depth design requirements of the grooves 111 .
  • the core in the mold 200 needs to be divided into multiple sections with the same number, so that each section of the core in the mold 200 can be rotated and demolded.
  • the helix parameters include but are not limited to helix angle, hand direction and pitch.
  • the spiral directions of the first groove section 1111 and the second groove section 1112 are opposite.
  • the surface of the rolling brush body 1 forms a V-shaped structure.
  • the cleaning element 2 corresponds to a V-shape, and this arrangement can guide the air flow to gather at the connection position of the first groove section 1111 and the second groove section 1112, so as to gather the dust and avoid the dust.
  • the raised dust spreads to the axial ends of the roller brush body 1, thereby reducing the secondary pollution to the dust collecting surface, thereby improving the cleaning efficiency and the dust collecting effect.
  • the diameter of the cylindrical body 11 remains unchanged along its axial direction, so the helical diameters of the first groove section 1111 and the second groove section 1112 remain unchanged.
  • the rolling brush body 1 includes two sections of the first forming surfaces 114 , and the second forming surfaces 115 are located between the two sections of the first forming surfaces 114 and are respectively connected with the two sections of the first forming surfaces 114 .
  • the connection between the second molding surface 115 and each of the first molding surfaces 114 is formed with a clamping line
  • the connection between the two first molding surfaces 114 is formed with a clamping line.
  • the bold in FIG. 17 represents the clamping line on the roller brush body 1 .
  • the rolling brush body 1 in this embodiment is provided with a concave portion 117 and a groove 111 .
  • FIG. 19 after the formed roller brush body 1 is subjected to a punching process, a plurality of planted pores 1171 are formed on the recessed portion 117 .
  • the roller brush made by using the roller brush body 1 is shown in Figure 20, wherein two leather strips and two brushes are respectively provided on the roller brush body.
  • the outer core 21 includes two sections of the first outer core 211 , and the two sections of the first outer core 211 are respectively located at both axial ends of the second outer core .
  • the inner core 22 includes two inner core shafts 221 correspondingly, and the two inner core shafts 221 are spliced along the axial direction.
  • the lengths of the first groove section 1111 and the second groove section 1112 may be equal or unequal, which may be determined according to the position of the dust collecting port on the housing in the floor brush assembly, so that the first groove section 1111 and the first groove section 1111 and the The connection position of the two groove sections 1112 is directly opposite to the dust collecting port.
  • the two inner core shafts 221 can be demolded synchronously, so that the forces on both ends of the rolling brush body 1 are balanced when the inner core 22 is demolded, thereby ensuring that the rolling brush body 1 does not move.
  • the inner core 22 is divided into two sections and demolded at the same time, which can shorten the demoulding stroke of the inner core 22, thereby reducing the overall demolding time and improving the demolding efficiency.
  • the clamping portion 212 can be used to form part of the concave portion 117, and can also be used to form the position where the concave portion 117 and the groove 111 are not provided on the cylindrical body 11, but cannot be used to form the groove. 111.
  • This embodiment provides a method for forming a rolling brush body, which is used for forming the rolling brush body 1 in the first embodiment or the second embodiment, and the method is applied to an injection mold.
  • the roller brush body 1 is formed by injection molding.
  • the injection mold includes an outer core 21 and an inner core 22 inserted into the outer core 21.
  • a molding cavity is formed therebetween, and the rolling brush body 1 is formed. in the molding cavity between the outer core 21 and the inner core 22 .
  • the outer core 22 is provided with a groove forming rib 2111 for forming the groove
  • the inner core 22 is provided with a rib forming groove for forming the first rib 12 .
  • the molding method provided in this embodiment includes a mold clamping step, an injection molding step, and a mold release step.
  • the inner core 22 and the outer core 21 move to the molding position. Specifically, as shown in FIG. 22 , the inner core 22 extends into the outer core 21 to enclose a molding cavity, waiting for injection. Injection molding material.
  • injection molding material is injected into the molding cavity, and the injection molding material fills the molding cavity. After the injection molding material is solidified, it enters the demoulding step, and the groove forming rib 2111 and the convex rib forming groove are spirally moved around the axis of the rolling brush body 1 to be separated from the forming rolling brush body 1 .
  • the part of the structure of the forming groove 111 and the rib 12 in the injection mold is demolded by means of spiral motion, which can solve the difficulty in the prior art for the special shaped groove 111 listed in the first embodiment.
  • the outer core 21 includes a first outer core 211 and a second outer core spliced with an axial end of the first outer core 211 , and the second outer core includes at least two outer cores arranged along the circumferential direction of the rolling brush body 1 . a clamping portion 212 .
  • the clamping portion 212 and the first outer core 211 are in the forming position, the outer core 21 is formed by splicing together; when the formed rolling brush body is formed in the forming cavity, at least two clamping portions 212 clamp the rolling brush body.
  • the demoulding steps specifically include:
  • the first outer core demoulding step the first outer core 211 spirally moves around the axis of the rolling brush body 1 to be separated from the rolling brush body 1; at this time, the clamping portion 212 clamps the rolling brush body, for example, as shown in FIG. 23 As shown, at least two clamping portions 212 clamp the roller brush body 1;
  • the inner core 22 spirally moves around the axis of the rolling brush body 1 to be separated from the rolling brush body 1. At this time, it can be shown in Figure 24;
  • At least two clamping portions 212 face away from the rolling brush body 1 along the radial direction of the rolling brush body 1 so as to be separated from the rolling brush body 1 , as shown in FIG. 25 .
  • the first outer core and the inner core are demolded first, which can prevent the rolling brush body 1 from rotating with the first outer core or the inner core, which is helpful for the first outer core and the inner core.
  • An outer core and inner core are demolded smoothly.
  • the second outer core does not move, so as to keep the rolling brush body 1 stationary through the spiral mating surface between the second outer core and the rolling brush body 1; on this basis , the first outer core 211 and the inner core 22 rotate around the axis of the roller brush body 1 respectively. Because the first outer core 211 and the inner core 22 are both screwed with the roller brush body 1, the first outer core 211 and the inner core 22 will also move relative to the roller brush body 1 in the axial direction during the rotation process, and then interact with the roller brush body 1. The brush body 1 is separated to realize the demolding of the first outer core 211 and the inner core 22 .
  • the second outer core is demolded by moving at least two clamping parts 212 along the radial direction of the rolling brush body 1. After the first outer core 211 and the inner core 22 are separated from the rolling brush body 1, the two clamping parts are far away from each other, the roller brush body 1 can be directly separated from the mold 200 without the need for product ejection, which further simplifies the demoulding process.
  • demoulding step is also applicable to the structure of the outer core shown in FIG. 8 , which will not be repeated in this embodiment.
  • the clamping step includes:
  • At least two clamping parts approach each other until the second outer core moves to its forming position
  • the first outer core 211 and the inner core 22 spirally move and the movement direction is opposite to that of demolding.
  • the core 22 is inserted into the outer core 21 in a spiral motion until the inner core 22 and the outer core 21 enclose a molding cavity.
  • the second outer core is returned first, so that the first outer core 211 can be spliced with the second outer core through a spiral motion, which helps to improve the splicing accuracy of the second outer core and the first outer core.
  • the outer core 21 includes two first outer cores 211, and the second outer core is located between the two first outer cores 211 and can be spliced with the two first outer cores 211 respectively.
  • the two first outer cores 211 start to spirally move at the same time, and move to the two ends of the rolling brush body 1 respectively.
  • the demoulding time of the outer core 21 is shortened, and the production efficiency is improved.
  • the groove forming edges on the two first outer cores 211 may be different, so that the formed grooves 111 have two different helical parameters.
  • the two first outer cores 211 may respectively form the first groove segment 1111 and the second groove segment 1112 in the second embodiment.
  • the inner core 22 includes two inner core shafts 221, and the two inner core shafts 221 can be spliced along the axial direction.
  • the two inner core shafts 221 start spiral motion at the same time, and move to the two ends of the rolling brush body 1 respectively, which can shorten the inner core 22 on the basis that the length of the rolling brush body 1 remains unchanged.
  • the demolding time is shortened, and the production efficiency is improved.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Brushes (AREA)

Abstract

滚刷体（1）、滚刷、吸尘设备（100）及滚刷体（1）的成型方法。滚刷体（1）用于安装清洁件（2）以形成滚刷，滚刷体（1）包括中空的筒体（11），筒体（11）的内壁上设置有向筒体（11）内部凸出且螺旋延伸的第一凸棱（12），筒体（11）对应第一凸棱（12）的外壁内凹至第一凸棱（12）内部以形成螺旋延伸的凹槽（111），凹槽（111）用于安装清洁件（2），凹槽（111）具有沿筒体（11）的径向由内向外排列的第一宽度和第二宽度，第一宽度大于第二宽度。在滚刷体（1）中，筒体（11）为中空结构，重量轻，可以减小滚刷体（1）转动所需的能耗；筒体（11）的内壁设置有第一凸棱（12），为凹槽（111）提供足够的深度空间，以提高对滚刷体（1）的固定效果；此外，通过凹槽（111）向筒体（11）内部凹设，能够减小滚刷体（1）的径向尺寸。

Description

一种滚刷体、滚刷、吸尘设备及滚刷体的成型方法 技术领域
本发明涉及吸尘设备技术领域，尤其涉及一种滚刷体、滚刷、吸尘设备及滚刷体的成型方法。
背景技术
吸尘器是利用电动机带动叶片高速旋转，在密封的壳体内产生空气负压吸取尘屑的一种清洁设备。吸尘器内设置有滚刷，通过滚刷转动拍打地面将尘屑扬起，从而提高吸尘效果。
滚刷包括滚刷体以及刷体，刷体设置在滚刷体的外壁上并呈螺旋状延伸。现有的滚刷体一般为实心结构，导致滚刷体的重量大，滚刷转动时所需的能耗大。部分滚刷体为空心结构，为了保证刷体的固定效果，滚刷体的外圆上设置有凸出部，凸出部上设置有与刷体配合的T型凹槽。这样设置虽然能够减轻滚刷体的重量，但增大了滚刷体的径向尺寸，凸起部位置容易堆积灰尘。部分滚刷体向内凹形成凹槽，但为保证凹槽的深度，滚刷体的内孔的直径较小，使得滚刷体壁厚较厚，滚刷体的重量仍较大，导致耗能大。
发明内容
本发明的目的在于提出一种滚刷体、滚刷、吸尘设备及滚刷体的成型方法，能解决现有滚刷体重量大、能耗大的问题。
为达此目的，本发明采用以下技术方案：
一种滚刷体，用于安装清洁件以形成滚刷，所述滚刷体包括中空的筒体，所述筒体的内壁上设置有向所述筒体内部凸出且螺旋延伸的第一凸棱，所述筒体对应所述第一凸棱的外壁内凹至所述第一凸棱内部以形成螺旋延伸的凹槽，所述凹槽用于安装所述清洁件，所述凹槽具有沿所述筒体的径向由内向外排列的第一宽度和第二宽度，所述第一宽度大于所述第二宽度。
其中，所述凹槽为倒T型槽或燕尾槽。
其中，所述筒体的外径为40mm-60mm。
其中，所述滚刷体的壁厚为2mm-4mm。
其中，所述凹槽包括连通的第一槽段和第二槽段，所述第一槽段和所述第二槽段的螺旋参数不同；
所述第一凸棱包括连接的第一延伸段和第二延伸段，所述第一延伸段与所述第一槽段的位置对应且螺旋参数相同，所述第二延伸段与所述第二槽段的位置对应且螺旋参数相同。
其中，所述螺旋参数包括螺距、螺旋角和/或螺旋方向。
其中，所述第一槽段和所述第二槽段的螺旋方向相反。
其中，所述凹槽伸入所述第一凸棱内的形状与所述第一凸棱的形状相适配。
其中，所述滚刷体注塑成型，所述滚刷体的外轮廓面包括沿轴向排列且连接的第一成型面和第二成型面，所述第一成型面和所述第二成型面的连接处形成夹线。
其中，所述滚刷体包括两段所述第一成型面，所述第二成型面位于两段所述第一成型面之间并分别与两段所述第一成型面连接，所述第二成型面与每个所述第一成型面的连接处均形成有所述夹线。
其中，所述夹线包括螺旋延伸的第一线段以及沿所述筒体的周向延伸的第二线段，所述第一线段与所述凹槽的螺旋方向平行，所述第一线段的端部与所述第二线段连接。
其中，两条所述第一线段和两条所述第二线段交替连接围成所述第二成型面，所述第二成型面位于所述凹槽的旁侧。
其中，所述筒体的内壁上向所述筒体内凸出且螺旋延伸有第二凸棱；
或所述筒体的外壁上向所述筒体外凸出且螺旋延伸有第二凸棱。
其中，所述第二凸棱设置于所述筒体的内壁上，所述筒体的外壁上对应所述第二凸棱的位置处设置有基准盲孔，所述基准盲孔能够被加工成植毛孔洞。
其中，所述基准盲孔设置有多个，多个所述基准盲孔沿所述第二凸棱的螺旋方向排列。
其中，所述筒体对应所述第二凸棱的外壁内凹至所述第二凸棱内部以形成有凹陷部，所述凹陷部绕所述筒体的轴线螺旋延伸。
其中，所述凹陷部的开口沿所述筒体的径向向背离所述筒体的轴线方向逐渐增大。
其中，所述第一凸棱和所述第二凸棱均设置有至少两条，所述第一凸棱和所述第二凸棱沿所述筒体的周向交替设置且均匀间隔分布，所述筒体的外壁对应每个所述第一凸棱的位置处均设置有所述凹槽。
一种滚刷，包括清洁件以及上述的滚刷体，所述清洁件卡接于所述凹槽内。
一种吸尘设备，包括地刷组件，所述地刷组件包括壳体以及上述的滚刷，所述滚刷转动设置于所述壳体内。
一种滚刷体的成型方法，应用于注塑模具，用于加工上述的滚刷体，所述滚刷体采用所述注塑模具注塑成型，所述注塑模具包括外型芯和穿设于所述外型芯内的内型芯，所述内型芯和所述外型芯处于成型位置时，其之间形成成型腔，所述外型芯上设置有成型所述凹槽的凹槽成型棱，所述内型芯上设置有成型所述第一凸棱的第一凸棱成型槽；
所述成型方法包括：
注塑步骤，向所述成型腔内注入注塑材料；
脱模步骤，所述凹槽成型棱和所述第一凸棱成型槽均通过螺旋运动与成型的所述滚刷体脱离。
其中，所述外型芯包括第一外芯和第二外芯，所述第二外芯包括沿滚刷体的周向排布的至少两个夹持部，所述凹槽成型棱设置于所述第一外芯的内壁上，所述夹持部与所述第一外芯处于成型位置时，拼接形成所述外型芯；所述成型腔内形成成型的滚刷体时，至少两个所述夹持部夹持所述滚刷体；
所述脱模步骤包括：
第一外芯脱模步骤，所述第一外芯绕所述滚刷体的轴线螺旋运动，以与所述滚刷体脱离；
内型芯脱模步骤，所述内型芯绕所述滚刷体的轴线螺旋运动，以与所述滚刷体脱离；
第二外芯脱模步骤，至少两个所述夹持部沿所述滚刷体的径向背离所述滚刷体，以与所述滚刷体脱离。
其中，所述外型芯包括两个所述第一外芯，所述夹持部位于两个所述第一外芯之间，且分别能与两个所述第一外芯拼接；
所述第一外芯脱模步骤中，两个所述第一外芯同时螺旋运动，且分别向所述滚刷体的轴线的两端移动。
其中，在所述内型芯包括两个内芯轴，两个内芯轴能沿轴向拼接；
内型芯脱模步骤中，两个所述内芯轴同时螺旋运动，且分别向所述滚刷体的轴线的两端移动。
其中，所述注塑步骤之前还包括：
合模步骤，所述内型芯和所述外型芯运动至处于成型位置。
其中，所述注塑步骤之前还包括：合模步骤，所述合模步骤包括：
至少两个所述夹持部相互靠近，直至所述夹持部移动到其成型位置；
所述第一外芯螺旋运动，直至所述第一外芯与所述夹持部拼接形成所述外型芯，所述内型芯螺旋运动插入所述外型芯内，直至形成所述成型腔。
有益效果：本发明提供了一种滚刷体、滚刷、吸尘设备及滚刷体的成型方法。该滚刷体中，筒体为中空结构，重量轻，可以减小滚刷体转动所需的能耗；筒体的内壁设置有第一凸棱，为凹槽提供足够的深度空间，以提高对刷体的固定效果；此外，通过凹槽向筒体内部凹 设，能够减小滚刷体的径向尺寸，滚刷体的外圆面可以设置为圆滑表面，避免灰尘堆积，也有助于成型制造。
附图说明
图1是本发明实施例一提供的一种吸尘器的结构示意图；
图2是本发明实施例一提供的另一种吸尘器的结构示意图；
图3是本发明实施例一提供的滚刷体的结构示意图；
图4是本发明实施例一提供的第一种滚刷体的剖视图；
图5是本发明实施例一提供的第一种滚刷体中某一横截面的示意图；
图6是本发明实施例一提供的第二种滚刷体中某一横截面的示意图；
图7是本发明实施例一提供的第三种滚刷体中某一横截面的示意图；
图8是本发明实施例一提供的用于成型滚刷体的模具的爆炸图；
图9是本发明实施例一提供的第一外芯的结构示意图；
图10是本发明实施例一提供的第二外芯的部分结构示意图；
图11是本发明实施例一提供的成型第一种滚刷体的外型芯、内型芯以及滚刷体配合状态下的剖视图；
图12是本发明实施例一提供的成型第一种滚刷体的外型芯和内型芯配合状态下的剖视图；
图13是本发明实施例一提供的滚刷体上夹线的示意图；
图14是本发明实施例一提供的第三种滚刷体的结构示意图；
图15是本发明实施例一提供的成型第三种滚刷体的外型芯和内型芯配合状态下的剖视图；
图16是本发明实施例二提供的第一种滚刷体的结构示意图；
图17是本发明实施例二提供的第一种滚刷体上夹线的示意图；
图18是本发明实施例二提供的第二种滚刷体的结构示意图；
图19是本发明实施例二提供的第二种滚刷体经过打孔工艺后的结构示意图；
图20是本发明实施例二提供的采用第二种滚刷体制成的滚刷的结构示意图；
图21是本发明实施例二提供的用于成型滚刷体的模具的结构示意图；
图22是本发明实施例三提供的注塑模具在合模状态下的结构示意图；
图23是本发明实施例三提供的注塑模具在第一外芯位于脱模状态下的结构示意图；
图24是本发明实施例三提供的注塑模具在第一外芯和内型芯位于脱模状态下的结构示意图；
图25是本发明实施例三提供的注塑模具在脱模状态下的结构示意图。
其中：
100、吸尘设备；110、地刷组件；120、杆身；
1、滚刷体；11、筒体；111、凹槽；1111、第一槽段；1112、第二槽段；112、第一线段；113、第二线段；114、第一成型面；115、第二成型面；116、第三线段；117、凹陷部；1171、植毛孔洞；12、第一凸棱；13、第二凸棱；2、刷体；
200、模具；21、外型芯；211、第一外芯；2111、凹槽成型棱；2112、拼接槽；212、夹持部；2121、第一棱边；2122、第二棱边；2123、凹陷成型棱；22、内型芯；221、内芯轴；2211、第一凸棱成型槽；2212、第二凸棱成型槽；222、端部封块。
具体实施方式
下面详细描述本发明的实施例，实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，旨在用于解释本发明，而不能理解为对本发明的限制。
在本发明的描述中，需要说明的是，术语“中心”、“上”、“下”、“左”、“右”、 “竖直”、“水平”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性。其中，术语“第一位置”和“第二位置”为两个不同的位置。
除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。
除非另有明确的规定和限定，第一特征在第二特征之“上”或之“下”可以包括第一特征和第二特征直接接触，也可以包括第一特征和第二特征不是直接接触而是通过它们之间的另外的特征接触。而且，第一特征在第二特征“之上”、“上方”和“上面”包括第一特征在第二特征正上方和斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”包括第一特征在第二特征正下方和斜下方，或仅仅表示第一特征水平高度小于第二特征。
下面结合附图并通过具体实施方式来进一步说明本发明的技术方案。
实施例一
本实施例提供了一种吸尘设备100，吸尘设备100内设置有吸尘通道及风机，吸尘设备100上设置有吸尘入口，吸尘入口处转动设置有滚刷。风机工作时，能够改变吸尘通道内的气压，使得吸尘设备100内外形成气压差，吸尘设备100外部的尘屑在该气压差的作用下由吸尘入口进入吸尘通道内，达到除尘清洁的目的。吸尘过程中，滚刷在吸尘入口处转动，通过拍打待吸尘表面，能够将待吸尘表面上的尘屑扬起，从而提高吸尘效果。
可选地，吸尘设备100可以为吸尘器或扫地机器人，其中吸尘器可以为图1所示立式吸尘器，也可以为图2所示卧式吸尘器。本实施例中，吸尘设备100以吸尘器为例进行介绍。
吸尘器包括杆身120、设置于杆身120一端的握持部以及设置于杆身120另一端的地刷组件110，地刷组件110包括壳体，壳体的底面设置有吸尘入口，壳体上还设置有集尘口，集尘口与吸尘器中的集尘容器连通。气流携带地面上的尘屑依次经过吸尘入口和集尘口后进入集尘容器内。
本实施例中，如图3-图5所示，滚刷包括滚刷体1以及设置在滚刷体1上的清洁件2，滚刷体1用于安装清洁件2，清洁件2随滚刷体1转动，起到拍打待吸尘表面的作用，从而使尘屑扬起，提高吸尘效果。
进一步地，清洁件2环绕滚刷体1的轴线呈螺旋状延伸，能够在拍打待吸尘表面的基础上，引导气流沿清洁件2的延伸方向流动，进而引导气流携带尘屑进入集尘口内。
此外，清洁件2呈螺旋状延伸，相比清洁件2沿滚刷体1的轴线呈直线延伸，能够减小清洁件2每一时刻与地面的接触面积和瞬时作用力，避免地面上的颗粒物因受到清洁件2的作用力而嘣起，从而防止加大且坚硬的颗粒物嘣起后弹伤用户或损坏家具，同时避免因尘屑脱离地刷组件110的真空吸附区域导致的清洁效率下降的问题。
可选地，清洁件2可以为毛刷或皮条。毛刷和皮条均具有柔性，毛刷用于清洁地毯，皮条可以用于清洁地板。
可选地，清洁件2和滚刷体1可以注塑连接或采用粘接固定。因清洁件2具有一定的柔性，其材质与滚刷体1的材质不同，当清洁件2采用注塑方式与滚刷体1连接时，清洁件2与滚刷体1需采用双色模注塑成型，导致成本较高。而采用粘接固定强度较差，清洁件2容易与滚刷体1脱开，影响用户的使用体验。
为解决上述问题，本实施例中，清洁件2可以与滚刷体1卡接固定。如图3和图4所示， 滚刷体1包括中空的筒体11，筒体11的外壁向内凹陷形成用于安装清洁件2的凹槽111，凹槽111呈螺旋延伸，凹槽111用于卡接清洁件2。一方面中空的筒体11能够减轻滚刷体1的重量，从而降低滚刷转动所需的能耗；另一方面，能够在不改变滚刷体1外观尺寸的基础上，减小材料用量，从而节省成本。
为保证凹槽111具有足够的深度，从而提高清洁件2的固定效果，筒体11的内壁上设置有向筒体11的内部凸出且螺旋延伸的第一凸棱12，凹槽111与第一凸棱12的位置对应并延伸至第一凸棱12内部，通过设置第一凸棱12，满足凹槽111的深度要求。
此外，相比在筒体11的外壁上设置有凸出部以加工凹槽111的结构，本发明中第一凸棱12设置在筒体11的内壁上，能够保证筒体11的外壁表面规整，避免灰尘堆积。
为方便清洁件2与滚刷体1固定，凹槽111沿长度方向的至少一端贯穿筒体11的轴向端面，凹槽111具有沿筒体11的径向由内向外排列的第一宽度和第二宽度，第一宽度大于第二宽度。通过上述设置，可以避免凹槽111内的结构由凹槽111的开口脱出，实现清洁件2与凹槽111的卡接，使得清洁件2与凹槽111不需要额外设置紧固件或粘接固定，结构简单。
本实施例中，凹槽111的两端贯穿筒体11的端面，以使清洁件2能够由任一端插入凹槽111内，安装方便。
为方便说明凹槽111的结构，选取了滚刷体1的某一截面如图5所示，本实施例中凹槽111为倒T型，其包括连通的第一槽和第二槽，第一槽位于第二槽的靠近筒体11轴线的一侧。第一槽和第二槽的截面形状均为矩形，第一槽宽度沿筒体11的径向保持不变，第二槽宽度沿筒体11的径向保持不变。其中，第一槽体的宽度为第一宽度M，第二槽体的宽度为第二宽度N，第一宽度M大于第二宽度N，使得凹槽111的开口呈现闭合趋势，能够防止清洁件2由凹槽111中脱出。
此外，第二槽体沿筒体11的径向具有一定的深度，第二槽体的相对两个侧面能够与清洁件2抵接，有助于限制清洁件2在筒体11的周向上的运动，使清洁件2的固定更牢靠，有助于提高清洁效果。
可选地，如图6所示，凹槽111可以具有多段第一槽体和/或多段第二槽体。
可以理解的是，凹槽111的宽度可以突变，也可以由第一宽度M逐渐变化为第二宽度N。当凹槽111的宽度突变时，凹槽111沿筒体11的径向分为多段，相邻两段之间形成过渡台阶面，可以起到对清洁件2限位的作用。
当凹槽111的宽度逐渐变化时，凹槽111可以为燕尾槽，或如图7所示，凹槽111的内壁为弧面，使得凹槽111的宽度沿筒体11径向逐渐减小，凹槽111的内壁对清洁件2具有限制作用，能够防止清洁件2由凹槽111中脱出。
可以理解的是，凹槽111的形状不限于上述形状，只要凹槽111的宽度是变化的，且较宽的第一宽度位于较窄的第二宽度的靠近筒体11轴线的一侧即可。
进一步地，凹槽111伸入第一凸棱12内的形状可以与第一凸棱的形状相适配，以使第一凸棱12与凹槽111配合形成的壁厚均匀，有利于保持滚刷体1转动过程中的动平衡。
进一步地，筒体11的壁厚可以与第一凸棱12处对应的壁厚大致相同，能够进一步保证滚刷体1转动过程中的动平衡。
为方便说明，将凹槽111伸入第一凸棱12内的部分称为适配槽段1111，将凹槽111贯穿筒体11的外壁的部分称为贯穿段1112。则适配槽段1111的形状与凸棱的形状相同，适配槽段1111的背离筒体11的轴线一侧表面为顶部表面，靠近筒体11的轴线一侧表面为底部表面，则适配槽段1111的顶部表面与筒体11的内表面基本共面，适配槽段1111的底部表面与第一凸棱12的朝向筒体11轴线的一侧表面之间的距离大致等于筒体11的壁厚。
本实施例中，滚刷体1的壁厚为2-4mm，滚刷体1的壁厚在该范围内，既可以满足滚刷体1的强度需要，又可以在滚刷体外径尺寸不变的基础上减小滚刷体1的重量，从而控制成本以及滚刷体1工作时的能耗。
示例性地，滚刷体1的壁厚可以为2mm、2.3mm、2.5mm、2.7mm、3mm、3.3mm、3.5mm、3.7mm、4mm。
现有技术中，滚刷体一般通过挤出模具挤出后，再扭转成型。具体地，现有的滚刷体包括实心的轴体和设置在轴体上并沿轴向延伸的安装结构(安装结构为凸棱或凹槽)。轴体和安装结构通过挤出工艺成型后，对轴体的两端施加相反的扭矩，使得轴体带动安装结构绕轴体的轴线扭转，从而使安装结构呈螺旋状延伸。
该种成型工艺中，因需要经过扭转成型，滚刷体选取的材质需具有一定的柔性，导致滚刷体的强度不足，影响清扫效果；且为了避免滚刷体在扭转时发生过度形变，轴体只能为实心结构，若轴体为空心筒体，空心筒体容易在扭转过程中塌陷，导致报废。
此外，由于挤出工艺限制，轴体的外径一般较小，生产的滚刷体仅能应用于小尺寸的吸尘设备中。
为解决上述问题，本实施例中，滚刷体1通过注塑方式成型。滚刷体1的材料强度好，可以满足使用需要；滚刷体1可以为空心结构，不仅能降低成本，而且能够降低滚刷体1工作时的能耗；注塑成型的滚刷体1的尺寸可以根据实际需要设定，解决了滚刷体1尺寸受限的问题。
示例性地，筒体11的外径可以为40mm-60mm，具体可以为40mm、42mm、45mm、47mm、49mm、50mm、52mm、55mm、57mm、59mm、60mm。
如图8所示，成型该滚刷体1的模具200包括外型芯21和内型芯22，内型芯22穿设于外型芯21内，内型芯22与外型芯21之间具有成型滚刷体1的型腔，且内型芯22的外壁以及外型芯21的内壁分别为成型滚刷体1内壁和滚刷体1外壁的成型面。其中，内型芯22上设置有成型第一凸棱12的凸棱成型槽，外型芯21上设置有成型凹槽111的凹槽成型棱2111。内型芯22包括内芯轴221和端部封块222，端部封块222用于与内芯轴221和外型芯21的端部抵接，以封闭成型腔。
传统的注塑模具包括定模和动模，定模和动模相互靠近合模后，二者之间形成成型腔。定模和动模相互远离后，模具与成型的产品脱离。若成型的产品包括内孔，注塑模具还包括芯体，芯体设置于型腔内用于成型内孔；脱模时，芯体沿内孔的轴向抽出实现脱模。
因凹槽111的特殊形状，凹槽111的宽度变化将阻止模具沿筒体11的径向与凹槽111脱开，导致外型芯无法采用传统模具中定模和动模的脱模方式进行脱模；而筒体11的内壁上设置有螺旋延伸的第一凸棱12，因第一凸棱12的干涉，成型筒体11内壁结构的内型芯无法通过沿筒体11的轴向运动的方式与筒体11脱开。
为此，本实施例中，凸棱成型槽和凹槽成型棱2111均采用螺旋运动方式沿滚刷体1的轴向脱模。但若外型芯21和内型芯22均采用螺旋运动的方式脱模时，当外型芯21和内型芯22中的一个通过螺旋运动与滚刷体1分开后，滚刷体1需要保持不动，以使外型芯21和内型芯22中的另一个能够相对滚刷体1运动，从而进行脱模。
为解决上述问题，本实施例中，外型芯21包括第一外芯211和与所述第一外芯211的轴向的端部拼接的第二外芯，第二外芯包括沿滚刷体1的周向拼接的至少两个夹持部212，至少两个夹持部212能够相对靠近以与第一外芯211拼接，也可以沿滚刷体1的径向相互远离，以和其内的滚刷体1分离。
脱模时，第二外芯不动，以通过第二外芯和滚刷体1之间的螺旋配合面保持滚刷体1位置不动；在此基础上，第一外芯211和内型芯22绕滚刷体1的轴线螺旋脱模。
待第一外芯211和内型芯22与滚刷体1分离后，第二外芯中的至少两个夹持段分开，滚刷体1将直接与第一外芯211脱离，不需要进行产品顶出，进一步简化了脱模工艺。
本实施例中，通过将滚刷体1进行分段成型，克服了上述滚刷体1难以注塑加工的技术偏见，解决了该类结构件注塑后如何脱模的技术难题，为滚刷体1的生产和应用做出了巨大贡献。
具体地，如图9所示，第一外芯211为轴套结构，其内壁用于成型滚刷体1的外壁，第一外芯211的内壁上设置有凹槽成型棱2111，凹槽成型棱2111沿螺旋方向延伸，且外轮廓形状与凹槽111的形状相匹配。第一外芯211的一端设置有与夹持部212拼接配合的拼接槽2112，拼接槽2112在轴向上沿凹槽111的螺旋方向延伸。对应地，如图10所示，第二外芯中的夹持部212沿凹槽111的螺旋方向延伸，以便第一外芯211螺旋运动时，第一外芯211上的拼接槽2112能够螺旋套于夹持部212外，实现夹持部212与拼接槽2112的拼接配合。
本实施例中，第二外芯包括四个夹持部212，四个夹持部212沿筒体11的周向均匀间隔设置，对应地，第一外芯211上设置有四个拼接槽2112，每个夹持部212能够与对应的拼接槽2112拼接，使得第一外芯211和第二外芯配合成型滚刷体1的完整外壁。
在其他实施例中，夹持部212的数量也可以设置两个、三个或设置四个以上，只要能使滚刷体1固定即可，具体数量可以根据实际需要设定。
如图11和图12所示，内型芯22包括内芯轴221，内芯轴221的外壁上设置有第一凸棱成型槽2211，第一凸棱成型槽2211沿螺旋方向延伸，且其形状与第一凸棱12的外轮廓形状相适配。
对应地，如图13所示，采用上述模具200成型的滚刷体1中，滚刷体1的外轮廓面包括沿轴向延伸且连接的第一成型面114和第二成型面115，第一成型面114由第一外芯211成型，第二成型面115由第二外芯成型。由于第一成型面114和第二成型面115分别采用两段外芯成型，使得第一成型面114和第二成型面115之间形成夹线。
需要说明的是，夹线是滚刷体1上在相邻的两段外芯的连接处对应位置形成的凸起结构，即因相邻的两段外芯之间会存在一定的拼接缝隙，导致成型的产品上残留的拼接痕迹。
可以理解的是，滚刷体1上的夹线的具体形状外芯型的拼接缝隙有关。
本实施例中，夹线包括螺旋延伸的第一线段112以及沿筒体11的周向延伸的第二线段113，第一线段112与凹槽111的螺旋方向平行，第一线段112的端部与第二线段113连接。具体地，如图10所示，夹持部212具有夹持滚刷体1并成型滚刷体1部分外周面的抵接面，抵接面包括与凹槽111的螺旋方向平行的两条第一棱边2121以及绕筒体11的周向延伸的两条第二棱边2122。两条第一棱边2121以及其中一条第二棱边2122与拼接槽2112配合，第一棱边2121与拼接槽2112的侧壁之间对应形成第一线段112，第二棱边2122与拼接缝之间形成第二线段113。另一条第二棱边2122与端部封块222之间对应形成第二线段113。
其中，两条第一线段112和两条第二线段113交替连接并围成第二成型面115，第二成型面115位于凹槽111的旁侧。
夹线还包括第三线段116，滚刷体1上在外型芯21与端部封块222的拼接处对应形成第三线段116，第三线段116的部分与第二线段113重合，第三向端116位于滚刷体1的一端端面并沿该端面的外轮廓线延伸。
图13中，夹线均以加粗线条体现。
需要说明的是，为了保证第二外芯顺利脱模，成型凹槽111的凹槽成型棱2111位于第一外芯211上，保证第一外芯211能够采用螺旋方式脱模，第二外芯中各夹持部212能够通过相互远离的方式脱模。
本实施例中，滚刷体1上的清洁件2包括皮条和毛刷，皮条通过凹槽111卡接固定，毛刷通过植毛方式固定与滚刷体1上。毛刷用于清洁地毯。一些实施例中，毛刷包括多簇刷毛，每簇刷毛植于滚刷体1的外壁上，多簇刷毛螺旋排列形成毛刷。
为保证刷毛的植入深度，如图14所示，筒体11的内壁或外壁上凸设有螺旋延伸的第二凸棱13，多簇刷毛置于滚刷体1的与第二凸棱13对应的位置处。通过设置第二凸棱13可以增大植毛处的滚刷体1的壁厚，保证植毛深度，避免刷毛脱落，同时能够降低植毛孔洞对滚刷体1强度的影响，进而提高滚刷体1的整体强度。
为了避免对第二凸棱13增加滚刷体1的尺寸，本实施例中，第二凸棱13设置于筒体11 的内壁上。此外，第二凸棱13设置在筒体11的内壁上，还可以避免筒体11的外壁有向外突出的结构，从而避免突出结构处缠绕毛发、堆积尘屑。
进一步地，筒体11的外壁上对应第二凸棱13的位置设置有凹陷部117，凹陷部117绕筒体11的轴线螺旋延伸。随着滚刷的使用，毛刷外容易缠绕有毛发，需要定期清理毛刷上的毛发，例如利用刀片切割毛刷上的毛发。通过设置凹陷部117，能够使缠绕的头发在凹陷部处悬空，有助于刀片进行切割操作，方便清理毛发。
可选地，凹陷部117的截面尺寸沿筒体11的径向朝向背离筒体11的轴线方向逐渐增大，一方面方便凹陷部117成型，另一方面可以方便清理缠绕的毛发。
对应地，成型图14所示的滚刷体1的注塑模具如图15所示，外型芯21上还设置有成型凹陷部117的凹陷成型棱2123，内型芯22上设置有成型第二凸棱13的第二凸棱成型槽2212。具体地，部分凹陷成型棱2123设置在夹持部212上。
为提高植毛精度，筒体11的外壁上对应第二凸棱13的位置处设置有基准盲孔。成型滚刷体1的模具200中，外型芯21的与第二凸棱13对应位置设置有定位凸柱，定位凸柱能够在滚刷体1的外壁上形成有基准盲孔。基准盲孔与筒体11一体成型，能够作为植毛孔洞的基准盲孔，通过再加工基准盲孔形成植毛孔洞，用于固定刷毛，提高植毛精度。
具体地，定位凸柱设置于第二外芯上，不仅可以成型基准盲孔，而且可以提高第二外芯与滚刷体1的固定效果，避免第一外芯211和内型芯22螺旋脱模时带动滚刷体1移动。
进一步地，基准盲孔设置有多个，多个基准盲孔沿第二凸棱的螺旋方向排列，以为多簇刷毛的植毛方向进行导向。
可选地，第一凸棱12和第二凸棱13均可以设置有至少两条，且第一凸棱12和第二凸棱13沿筒体11的周向交替设置，每个第一凸棱12上均对应设置有凹槽111，使得毛刷和皮条交替分布，有利于提高清扫效果。
进一步地，至少两个第一凸棱12和至少两个第二凸棱13可以均匀间隔分布，使得滚刷体1的质量分布更对称，能够避免滚刷体1转动时晃动。
一些实施例中，滚刷中的毛刷不能通过植毛方式固定于滚刷体上，原因在于毛刷中的刷毛单根或单条设置，刷毛可以为薄片状结构，也可以为圆柱状结构，因单根圆柱状刷毛或单条薄片状刷毛脚软，采用植毛固定较难操作，且精度较差。为此，毛刷还包括安装部，多根或多条刷毛设置于安装部上，安装部安装于凹槽111内，从而实现毛刷固定。
实施例二
本实施例提供了一种吸尘设备，在实施例一的基础上，对滚刷体1进一步改进，以提高滚刷体1的集尘效果。
具体地，如图16所示，凹槽111包括连通的第一槽段1111和第二槽段1112，第一槽段1111和第二槽段1112的螺旋参数不同，以使凹槽111整体为变螺旋结构，以便根据使用需要或得更好地除尘效果。对应地，第一凸棱12包括连接的第一延伸段和第二延伸段，第一延伸段与第一槽段1111的位置对应且螺旋参数相同，第二延伸段与第二槽段1112的位置对应且螺旋参数相同，以保证凹槽111的深度设计要求。
可以理解地是，凹槽111中以螺旋参数不同分为多段后，对应地模具200中的型芯需要分为数量相同的多段，以使模具200中每段型芯均可以转动脱模。其中，螺旋参数包括但不限于螺旋角、旋向和螺距。
本实施例中，第一槽段1111和第二槽段1112的螺旋方向相反。通过将第一凸棱12和凹槽111分为螺旋相反的两段，使得滚刷体1的表面形成V型结构。安装清洁件2后，清洁件2对应为V型，该种设置能够引导气流向第一槽段1111和第二槽段1112的连接位置处聚集，从而起到对尘屑的聚拢效果，避免扬起的尘屑向滚刷体1的轴向两端扩散，减少对吸尘表面的二次污染，从而提高清扫效率和吸尘效果。
本实施例中，筒体11的直径沿其轴向保持不变，因此，第一槽段1111和第二槽段1112的螺旋直径不变。
本实施例中，如图17所示，滚刷体1包括两段第一成型面114，第二成型面115位于两段第一成型面114之间并分别与两段第一成型面114连接，第二成型面115与每个第一成型面114的连接处均形成有夹线、两段第一成型面114的连接处形成有夹线。其中，图17中的加粗表示滚刷体1上的夹线。
可选地，如图18所示，本实施例中的滚刷体1上设置有凹陷部117和凹槽111。如图19所示，成型后的滚刷体1经打孔工艺后，在凹陷部117上形成有多个植毛孔洞1171。采用该滚刷体1制成的滚刷如图20所示，其中滚刷体上分别设置有两个皮条和两个毛刷。
对应地，如图24所示，成型滚刷体1的模具200中，外型芯21包括两段第一外芯211，两段第一外芯211分别位于第二外芯的轴向两端。内型芯22对应包括两个内芯轴221，两个内芯轴221沿轴向拼接。
可选地，第一槽段1111和第二槽段1112的长度可以相等，也可以不等，具体可以根据地刷组件中壳体上集尘口的位置确定，以使第一槽段1111和第二槽段1112的连接位置与集尘口正对。
进一步地，两个内芯轴221可以同步脱模，以使内型芯22脱模时滚刷体1两端受到的力相平衡，进而保证滚刷体1不动。
此外，将内型芯22分为两段，并同时进行脱模，可以缩短内型芯22的脱模行程，从而减少整体脱模时间，提高脱模效率。
需要说明的是，本实施例中的第一外芯211、两个内芯轴221的结构可以参考实施例一中的结构，此处不再具体赘述。
需要说明的是，注塑模具中，夹持部212可以用于成型部分凹陷部117，也可以用于成型筒体11上未设置凹陷部117和凹槽111的位置，但不能用于成型凹槽111。
实施例三
本实施例提供了一种滚刷体的成型方法，用于成型实施例一或实施例二中的滚刷体1，该方法应用于注塑模具。具体地，滚刷体1通过注塑成型。注塑模具包括外型芯21和穿设于所述外型芯21内的内型芯22，内型芯22和外型芯21处于成型位置时，其之间形成成型腔，滚刷体1成型于外型芯21和内型芯22之间的成型腔内。其中，外型芯上设置有成型凹槽的凹槽成型棱2111，内型芯22上设置有成型第一凸棱12的凸棱成型槽。
本实施例提供的成型方法包括合模步骤、注塑步骤和脱模步骤。合模步骤中，内型芯22和外型芯21运动至处于成型位置，具体地，如图22所示，内型芯22伸入至外型芯21内，以围成成型腔，等待注入注塑材料。注塑步骤中，向成型腔内注入注塑材料，注塑材料充满成型腔。待注塑材料凝固后，进入脱模步骤，凹槽成型棱2111和凸棱成型槽通过绕滚刷体1的轴线螺旋运动，实现与成型的滚刷体1脱离。
本实施例中，通过将注塑模具中成型凹槽111和凸棱12的部分结构通过螺旋运动的方式实现脱模，能够解决现有技术中对于实施例一中列举的特殊造型的凹槽111难以注塑成型的难题。
具体地，外型芯21包括第一外芯211和与第一外芯211的轴向端部拼接的第二外芯，第二外芯包括沿滚刷体1的周向排布的至少两个夹持部212。夹持部212与第一外芯211处于成型位置时，拼接形成外型芯21；成型腔内形成成型的滚刷体时，至少两个夹持部212夹持滚刷体。
脱模步骤具体包括：
第一外芯脱模步骤，第一外芯211绕滚刷体1的轴线螺旋运动，以与滚刷体1脱离；此时，夹持部212夹持滚刷体，例如，如图23所示，至少两个夹持部212夹持滚刷体1；
内型芯脱模步骤，内型芯22绕滚刷体1的轴线螺旋运动，以与滚刷体1脱离，此时，可如图24所示；
第二外芯脱模步骤，至少两个夹持部212沿滚刷体1的径向背离滚刷体1，以与所述滚刷体1脱离，此时，可如图25所示。
上述脱模步骤中，第二外芯保持不动的基础上，第一外芯和内型芯先脱模，能够避免滚刷体1随第一外芯或内型芯转动，有助于第一外芯和内型芯顺利脱模。
第一外芯211、内型芯22脱模时，第二外芯不动，以通过第二外芯和滚刷体1之间的螺旋配合面保持滚刷体1位置不动；在此基础上，第一外芯211、内型芯22分别绕滚刷体1的轴线转动。因第一外芯211和内型芯22均与滚刷体1螺旋配合，第一外芯211和内型芯22在转动过程中还会相对滚刷体1沿其轴向移动，进而与滚刷体1分离，实现第一外芯211、内型芯22的脱模。
第二外芯通过至少两个夹持部212沿滚刷体1的径向移动实现脱模，当第一外芯211和内型芯22与滚刷体1分离后，通过两个夹持部的相互远离，滚刷体1可以将直接与模具200脱离，不需要进行产品顶出，进一步简化了脱模工艺。
需要说明的是，上述脱模步骤同样适用于图8所示的外型芯的结构，本实施例在此不再赘述。
可以理解的是，合模步骤中，外型芯21和内型芯22的运动方向与脱模步骤中的运动方向是相反。具体地，合模步骤包括：
至少两个夹持部相互靠近，直至第二外芯移动到其成型位置；
第一外芯211和内型芯22螺旋运动且运动方向与脱模时相反，第一外芯211螺旋运动直至第一外芯211与夹持部212拼接形成完整的外型芯21，内型芯22螺旋运动插入外型芯21内，直至内型芯22和外型芯21围成成型腔。
合模步骤中，第二外芯先回位，便于第一外芯211能够通过螺旋运动与第二外芯拼接，有助于提高第二外芯和第一外芯的拼接精度。
具体地，外型芯21包括两个第一外芯211，第二外芯位于两个第一外芯211之间，并分别能与两个第一外芯211拼接的实施方式，通过设置两个第一外芯211，在第一外芯脱模步骤中，两个第一外芯211同时开始螺旋运动，并分别向滚刷体1的两端移动，能够在滚刷体1的长度不变的基础上，缩短外型芯21脱模时间，提高生产效率。
此外，两个第一外芯211上的凹槽成型棱可以不同，以使成型的凹槽111具有两段不同的螺旋参数。示例性地，两个第一外芯211可以分别成型实施例二中的第一槽段1111和第二槽段1112。
对应地，内型芯22包括两个内芯轴221，两个内芯轴221可以沿轴向拼接。内型芯脱模步骤中，两个内芯轴221同时开始螺旋运动，并分别向滚刷体1的两端移动，能够在滚刷体1的长度不变的基础上，缩短内型芯22的脱模时间，提高生产效率。
以上内容仅为本发明的较佳实施例，对于本领域的普通技术人员，依据本发明的思想，在具体实施方式及应用范围上均会有改变之处，本说明书内容不应理解为对本发明的限制。

Claims (15)

  1. 一种滚刷体，用于安装清洁件(2)以形成滚刷，其特征在于，所述滚刷体包括中空的筒体(11)，所述筒体(11)的内壁上设置有向所述筒体(11)内部凸出且螺旋延伸的第一凸棱(12)，所述筒体(11)对应所述第一凸棱(12)的外壁的区域内凹至所述第一凸棱(12)内部以形成螺旋延伸的凹槽(111)，所述凹槽(111)用于安装所述清洁件(2)，所述凹槽(111)具有沿所述筒体(11)的径向由内向外排列的第一宽度和第二宽度，所述第一宽度大于所述第二宽度。
  2. 如权利要求1所述的滚刷体，其特征在于，所述凹槽(111)为倒T型槽或燕尾槽；
    优选地，所述筒体(11)的外径为40mm-60mm；
    优选地，所述滚刷体(1)的壁厚为2mm-4mm。
  3. 如权利要求1或2所述的滚刷体，其特征在于，所述凹槽(111)包括连通的第一槽段(1111)和第二槽段(1112)，所述第一槽段(1111)和所述第二槽段(1112)的螺旋参数不同；
    所述第一凸棱(12)包括连接的第一延伸段和第二延伸段，所述第一延伸段与所述第一槽段(1111)的位置对应且螺旋参数相同，所述第二延伸段与所述第二槽段(1112)的位置对应且螺旋参数相同。
  4. 如权利要求3所述的滚刷体，其特征在于，所述螺旋参数包括螺距、螺旋角和/或螺旋方向，
    优选地，所述第一槽段(1111)和所述第二槽段(1112)的螺旋方向相反。
  5. 如权利要求1-4中任一项所述的滚刷体，其特征在于，所述凹槽(111)伸入所述第一凸棱(12)内的形状与所述第一凸棱(12)的形状相适配。
  6. 如权利要求1-5中任一项所述的滚刷体，其特征在于，所述滚刷体注塑成型，所述滚刷体的外轮廓面包括沿轴向排列且连接的第一成型面(114)和第二成型面(115)，所述第一成型面(114)和所述第二成型面(115)的连接处形成夹线；
    优选地，所述滚刷体包括两段所述第一成型面(114)，所述第二成型面(115)位于两段所述第一成型面(114)之间并分别与两段所述第一成型面(114)连接，所述第二成型面(115)与每个所述第一成型面(114)的连接处均形成有所述夹线。
  7. 如权利要求6所述的滚刷体，其特征在于，所述夹线包括螺旋延伸的第一线段(112)以及沿所述筒体(11)的周向延伸的第二线段(113)，所述第一线段(112)与所述凹槽(111)的螺旋方向平行，所述第一线段(112)的端部与所述第二线段(113)连接；
    优选地，两条所述第一线段(112)和两条所述第二线段(113)交替连接围成所述第二成型面(115)，所述第二成型面(115)位于所述凹槽(111)的旁侧；
  8. 如权利要求1-7中任一项所述的滚刷体，其特征在于，所述筒体(11)的内壁上向所述筒体(11)的内部凸出且螺旋延伸有第二凸棱(13)；
    或所述筒体(11)的外壁上向所述筒体(11)外凸出且螺旋延伸有第二凸棱(13)；
    优选地，所述第一凸棱(12)和所述第二凸棱(13)均设置有至少两条，所述第一凸棱(12)和所述第二凸棱(13)沿所述筒体(11)的周向交替设置且均匀间隔分布，所述筒体(11)的外壁对应每个所述第一凸棱(12)的位置处均设置有所述凹槽(111)；
    优选地，所述第二凸棱(13)设置于所述筒体(11)的内壁上，所述筒体(11)的外壁上对应所述第二凸棱(13)的位置处设置有基准盲孔，所述基准盲孔能够被加工成植毛孔洞；
    优选地，所述基准盲孔设置有多个，多个所述基准盲孔沿所述第二凸棱(13)的螺旋方向排列。
  9. 如权利要求8所述的滚刷体，其特征在于，所述筒体(11)对应所述第二凸棱(13)的外壁内凹至所述第二凸棱(13)内部以形成有凹陷部(117)，所述凹陷部(117)绕所述筒体(11)的轴线螺旋延伸；
    优选地，所述凹陷部(117)的截面尺寸沿所述筒体(11)的径向朝向背离所述筒体(11) 的轴线方向逐渐增大。
  10. 一种滚刷，其特征在于，包括清洁件(2)以及如权利要求1-9中任一项所述的滚刷体，所述清洁件(2)卡接于所述凹槽(111)内。
  11. 一种吸尘设备，包括地刷组件，其特征在于，所述地刷组件包括壳体以及如权利要求10所述的滚刷，所述滚刷转动设置于所述壳体内。
  12. 一种滚刷体的成型方法，应用于注塑模具，用于加工如权利要求1-9中任一项所述的滚刷体，其特征在于，所述滚刷体采用所述注塑模具注塑成型，所述注塑模具包括外型芯(21)和穿设于所述外型芯(21)内的内型芯(22)，所述内型芯(22)和所述外型芯(21)处于成型位置时，其之间形成成型腔，所述外型芯(21)上设置有成型所述凹槽(111)的凹槽成型棱(2111)，所述内型芯(22)上设置有成型所述第一凸棱(12)的第一凸棱成型槽(2211)；
    所述成型方法包括：
    注塑步骤，向所述成型腔内注入注塑材料；
    脱模步骤，所述凹槽成型棱(2111)和所述第一凸棱成型槽(2211)均通过螺旋运动与成型的所述滚刷体脱离。
  13. 如权利要求12所述的滚刷体的成型方法，其特征在于，所述外型芯(21)包括第一外芯(211)和第二外芯，所述第二外芯包括沿滚刷体的周向排布的至少两个夹持部(212)，所述凹槽成型棱(2111)设置于所述第一外芯(211)的内壁上，所述夹持部(212)与所述第一外芯(211)处于所述成型位置时，拼接形成所述外型芯(21)；所述成型腔内形成所述滚刷体时，至少两个所述夹持部(212)夹持所述滚刷体；
    所述脱模步骤包括：
    第一外芯脱模步骤，所述第一外芯(211)绕所述滚刷体的轴线螺旋运动，以与所述滚刷体脱离；
    内型芯脱模步骤，所述内型芯(22)绕所述滚刷体的轴线螺旋运动，以与所述滚刷体脱离；
    第二外芯脱模步骤，至少两个所述夹持部(212)沿所述滚刷体的径向背离所述滚刷体，以与所述滚刷体脱离。
  14. 如权利要求13所述的滚刷体的成型方法，其特征在于，所述外型芯(21)包括两个所述第一外芯(211)，所述夹持部(212)位于两个所述第一外芯(211)之间，且分别能与两个所述第一外芯(211)拼接；
    所述第一外芯脱模步骤中，两个所述第一外芯(211)同时螺旋运动，且分别向所述滚刷体的轴线的两端移动；
    优选地，所述内型芯(22)包括两个内芯轴(221)，两个内芯轴(221)能沿轴向拼接；
    内型芯脱模步骤中，两个所述内芯轴(221)同时螺旋运动，且分别向所述滚刷体的轴线的两端移动。
  15. 如权利要求13或14所述的滚刷体的成型方法，其特征在于，所述注塑步骤之前还包括：
    合模步骤，所述内型芯(22)和所述外型芯(21)运动至处于成型位置；
    优选地，所述注塑步骤之前还包括：合模步骤，所述合模步骤包括：
    至少两个所述夹持部(212)相互靠近，直至所述夹持部(212)移动到所述成型位置；
    所述第一外芯(211)螺旋运动，直至所述第一外芯(211)与所述夹持部(212)拼接形成所述外型芯(21)，所述内型芯(22)螺旋运动插入所述外型芯(21)内，直至形成所述成型腔。
PCT/CN2021/082542 2021-02-09 2021-03-24 一种滚刷体、滚刷、吸尘设备及滚刷体的成型方法 WO2022170667A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202110181186.5 2021-02-09
CN202110181186.5A CN112998577B (zh) 2021-02-09 2021-02-09 一种滚刷体、滚刷、吸尘设备及滚刷体的成型方法

Publications (1)

Publication Number Publication Date
WO2022170667A1 true WO2022170667A1 (zh) 2022-08-18

Family

ID=76401996

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2021/082542 WO2022170667A1 (zh) 2021-02-09 2021-03-24 一种滚刷体、滚刷、吸尘设备及滚刷体的成型方法

Country Status (2)

Country Link
CN (1) CN112998577B (zh)
WO (1) WO2022170667A1 (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114145681A (zh) * 2021-12-31 2022-03-08 帝舍智能科技(武汉)有限公司 一种清洁工具用海绵滚筒及成型模具

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150150426A1 (en) * 2013-12-04 2015-06-04 Samsung Electronics Co., Ltd. Vacuum cleaning device
CN207544607U (zh) * 2017-12-06 2018-06-29 东莞市多成五金科技有限公司 滚刷
CN108903823A (zh) * 2018-08-13 2018-11-30 天佑电器（苏州）有限公司 滚刷、滚刷的制作方法及具有该滚刷的扫地机
CN208709776U (zh) * 2018-04-18 2019-04-09 东莞市多成五金科技有限公司 V型滚刷
CN209136440U (zh) * 2018-06-19 2019-07-23 添可电器有限公司 滚刷及清洁装置
CN211683292U (zh) * 2019-12-31 2020-10-16 宁波贝凯日用品制造有限公司 一种蜗杆状滚刷轴成型模具

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015198856A (ja) * 2014-04-10 2015-11-12 株式会社コーワ 電気掃除機用の吸込具
CN207755216U (zh) * 2017-11-17 2018-08-24 杭州匠龙机器人科技有限公司 智能扫地机器人
CN107736842A (zh) * 2017-11-30 2018-02-27 莱克电气股份有限公司 一种吸尘器滚刷
CN210989976U (zh) * 2019-09-12 2020-07-14 小狗电器互联网科技（北京）股份有限公司 一种滚刷体、滚刷及吸尘器用地刷
CN110811435A (zh) * 2019-11-06 2020-02-21 深圳市银星智能科技股份有限公司 清洁机器人的滚刷组件及清洁机器人

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150150426A1 (en) * 2013-12-04 2015-06-04 Samsung Electronics Co., Ltd. Vacuum cleaning device
CN207544607U (zh) * 2017-12-06 2018-06-29 东莞市多成五金科技有限公司 滚刷
CN208709776U (zh) * 2018-04-18 2019-04-09 东莞市多成五金科技有限公司 V型滚刷
CN209136440U (zh) * 2018-06-19 2019-07-23 添可电器有限公司 滚刷及清洁装置
CN108903823A (zh) * 2018-08-13 2018-11-30 天佑电器（苏州）有限公司 滚刷、滚刷的制作方法及具有该滚刷的扫地机
CN211683292U (zh) * 2019-12-31 2020-10-16 宁波贝凯日用品制造有限公司 一种蜗杆状滚刷轴成型模具

Also Published As

Publication number Publication date
CN112998577A (zh) 2021-06-22
CN112998577B (zh) 2022-09-20

Similar Documents

Publication Publication Date Title
US10799081B2 (en) Brushroll for vacuum cleaner
US11759069B2 (en) Agitator for a surface treatment apparatus and a surface treatment apparatus having the same
WO2022170667A1 (zh) 一种滚刷体、滚刷、吸尘设备及滚刷体的成型方法
CN112353326B (zh) 一种扫地机清扫辊筒的生产方法
CN113229746B (zh) 用于吸尘器的地刷总成和吸尘器
US20210169288A1 (en) Dust Collection Guide Structure, Dust Collection Mechanism and Sweeping Robot
WO2022170668A1 (zh) 一种滚刷体、滚刷、吸尘设备及滚刷体的成型方法
CN110946503B (zh) 一种吸尘器滚刷
CN215016748U (zh) 一种滚刷体、滚刷及吸尘设备
CN215016747U (zh) 一种滚刷及吸尘设备
TWI752552B (zh) 真空吸塵器
JP3183445B2 (ja) 電気掃除機の吸込口体およびその回転清掃体
CN215550480U (zh) 一种注塑模具
CN113001892B (zh) 一种注塑模具及转动体的制作方法
CN215550478U (zh) 一种注塑模具
CN215550479U (zh) 一种注塑模具
CN113001894B (zh) 一种注塑模具及转动体的制作方法
CN113001891B (zh) 一种注塑模具及转动体的制作方法
KR100352613B1 (ko) 청소기용 브러시 홀더
JP3624563B2 (ja) 電気掃除機用吸込具のアジテーターの製造方法
CN220966685U (zh) 滚刷、清洁组件及除螨仪
JP2000107093A (ja) 掃除機吸引ヘッド用回転ブラシとその製造方法及び回転ブラシのロータ分割体製造装置
WO2023029703A1 (en) Agitator for a surface treatment apparatus and a surface treatment apparatus having the same
CN220557929U (zh) 滚刷组件、地刷装置及清洁设备
US20220354323A1 (en) Agitator for a surface treatment apparatus and a surface treatment apparatus having the same

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21925323

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 21925323

Country of ref document: EP

Kind code of ref document: A1