WO2014183679A1 - 吸尘器及其过滤装置 - Google Patents

吸尘器及其过滤装置 Download PDF

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Publication number
WO2014183679A1
WO2014183679A1 PCT/CN2014/077781 CN2014077781W WO2014183679A1 WO 2014183679 A1 WO2014183679 A1 WO 2014183679A1 CN 2014077781 W CN2014077781 W CN 2014077781W WO 2014183679 A1 WO2014183679 A1 WO 2014183679A1
Authority
WO
WIPO (PCT)
Prior art keywords
vacuum cleaner
filter device
mouth
fixing
cleaner filter
Prior art date
Application number
PCT/CN2014/077781
Other languages
English (en)
French (fr)
Inventor
刘海平
Original Assignee
天佑电器（苏州）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 天佑电器（苏州）有限公司 filed Critical 天佑电器（苏州）有限公司
Priority to US14/890,242 priority Critical patent/US10149586B2/en
Publication of WO2014183679A1 publication Critical patent/WO2014183679A1/zh

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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
    • 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
    • A47L9/12—Dry filters
    • 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
    • A47L9/12—Dry filters
    • A47L9/127—Dry filters tube- or sleeve-shaped
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/0002—Casings; Housings; Frame constructions
    • B01D46/0005—Mounting of filtering elements within casings, housings or frames
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
    • B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
    • B01D46/2411—Filter cartridges
    • B01D46/2414—End caps including additional functions or special forms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/52—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material
    • B01D46/521—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material using folded, pleated material
    • B01D46/525—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material using folded, pleated material which comprises flutes

Definitions

  • the invention relates to a vacuum cleaner and a filter device therefor.
  • the vacuum cleaner is a commonly used household cleaning device, and the vacuum cleaner sucks dust and debris into the dust bucket through the working airflow and discharges the working airflow. Therefore, the vacuum cleaner needs to have the function of separating the working airflow and the dust and debris from the air.
  • Filtering devices are by far the most common and effective solution for gas and dust separation.
  • the filter device needs to be removed from the vacuum cleaner frequently during use. For example, after a period of time, the vacuum cleaner filter device accumulates a large amount of dust, needs to be removed and cleaned, and then reinstalled.
  • the filter element of the filter device is made of filter paper. After the filter paper has been used for a period of time, a large amount of dust accumulates on the surface.
  • the patent publication CN101711657 discloses a replaceable filter device comprising a filter device holder, the filter device being sleeved on the bracket and having an elastic end at one end of the filter device, the end having an end hole When the filter device is installed, the support column on the bracket passes through the end hole, and the end hole is maintained in an area where the outer diameter of the support column is small.
  • the elastic structure may cause structural aging or elastic failure after repeated use for a long time, and the filter device is used when the structure is deteriorated or the elastic failure occurs. It may fall off automatically during the process, and the interference between the elastic end and the support column is inconvenient during the installation and disassembly process.
  • the present invention provides a vacuum cleaner filter device which is more stable in structure and does not automatically fall off during use.
  • the main technical solution provided by the present invention is as follows: a vacuum cleaner filtering device comprising a filter, a bracket, a tip and a fixing portion; the filter has a filter paper and a sealing member; and the end of the filter is disposed at one end of the filter The end of the end has a hole extending through the end, the filter is mounted on the bracket, the bracket is provided with a center pillar, and the middle pillar passes through the end hole; the characteristic is: the end between the end and the fixed part There is a locking portion, and the locking portion locks the center pillar when the fixing portion and the end are fastened.
  • the fixing portion is a knob, and the locking portion is at least two claw portions integrally formed on the knob.
  • At least two claws are arranged around the center circumference of the knob.
  • the claw is located between the center post and the end hole.
  • the end of the claw is chamfered; the end hole is provided with a mouth portion, and the inner diameter of the mouth is gradually reduced from top to bottom, and an arcuate buffer groove matching the chamfer is formed at the bottom end.
  • the knob is secured to the mouth by a tightening thread.
  • the center pillar is provided with a head portion, and the head portion has a hat-shaped jaw portion, and the thrust generated when the fixing portion and the end portion are fastened locks the claw portion and the hat-shaped jaw portion.
  • the fixing portion is a knob, the end hole is provided with a mouth portion, and the knob and the mouth portion are screwed to each other.
  • the locking portion is at least two snaps integrally formed on the mouth.
  • the middle column is provided with a head portion, and the head portion has a hat-shaped crotch portion, and when the knob is fastened to the mouth portion, the buckle and the cap-shaped crotch portion are engaged with each other.
  • the buckle has a sloping top surface.
  • the knob pushes the top slanting top surface inwardly so that the buckle and the cap-shaped jaw are clamped to each other.
  • At least two snaps are integrally formed on the side walls of the mouth.
  • the buckle extends longitudinally downward from the top end of the side wall of the mouth and has a sloping top surface and a hook portion.
  • the buckle may also extend laterally from the bottom end of the side wall of the mouth and have a beveled top surface.
  • a vacuum cleaner having the above filtering device further comprising: a negative pressure air power source, a dust bucket, an air inlet, and an outlet, wherein the negative pressure air power source generates a negative pressure to cause the dust air to circulate between the inlet and the outlet .
  • the invention has the advantages that: the filtering device is installed in the dust bucket of the vacuum cleaner through the bracket and the fixing portion and the locking portion, the fixing portion and the locking portion are injection molded parts, and the fixing portion and the end of the bracket are tight When locked, the locking portion locks the center pillar. There is no elastic interference fit during the implementation process, which makes the fixing of the filter device more reliable. When the knob and the end are locked, it can withstand greater external force to ensure that the filter device will not accidentally disengage during use.
  • Figure 1 is a schematic view of a filtration apparatus corresponding to a first embodiment of the present invention.
  • Figure 2 is a cross-sectional view of the filter device of Figure 1 and a partial enlarged view thereof.
  • Figure 3 is a schematic exploded view of the filtering device of Figure 1.
  • Figure 4 is an enlarged view of the knob of Figure 3.
  • Fig. 5 is a schematic view of the entire vacuum cleaner using the filtering device of Fig. 1.
  • Figure 6 is a schematic view of the head portion and the filtering device of Figure 5
  • Figure 7 is a schematic cross-sectional view of the cleaner of Figure 5.
  • Figure 8 is a cross-sectional view of the filter device corresponding to the second embodiment of the present invention in an unlocked state.
  • Figure 9 is a cross-sectional view of the filter device of Figure 8 in a locked state.
  • Figure 10 is a cross-sectional view of the filter device corresponding to the third embodiment of the present invention in an unlocked state.
  • Figure 11 is a cross-sectional view of the filter device of Figure 10 in a locked state.
  • Embodiment 1 Referring to the vacuum cleaner filter device 1 shown in Figs. 1, 2 and 3, a bracket 10 is provided at the bottom of the filter 2, and the bracket 10 is composed of a disc-shaped base 11 and a cylindrical core 12, and the core 12 is integrally provided. On a round base.
  • the core 12 has annular ribs 120 arranged annularly, and an opening 121 is formed between adjacent ribs.
  • the opening 121 is used for working airflow through a vacuum cleaner or other cleaning device, and a longitudinally arranged rib 122 is disposed around the core 12, longitudinally.
  • the aligned ribs 122 are integrally formed with the annular ribs 120 and connected to the adjacent annular ribs 120.
  • a circular flat plate 123 is disposed at the upper end of the core 12 .
  • the center of the circular flat plate 123 protrudes upward to form a substantially cylindrical center pillar 124, and the center pillar 124 is disposed integrally with the flat plate 123.
  • the upper end of the center pillar 124 has a head 125, and a neck region 126 is disposed below the head portion 125. The outer diameter of the neck region 126 is smaller than the outer diameter of the edge of the head portion 125.
  • the filter is mounted on the outside of the bracket 10, the end 21 is disposed at the upper end of the filter 2, and the bottom of the filter 2 is provided with a rubber seal 22, and when the filter 2 is mounted on the bracket 10, the rubber seal 22 and the base 11 are mutually seal.
  • a filter paper 23 is disposed between the end portion 21 and the rubber seal 22, and the filter paper 23 is circumferentially arranged between the end portion 21 and the rubber seal member 22.
  • the outer surface of the filter paper forms a ridge 24 interposed therebetween, and the ridge 24 can be increased.
  • the filtration area of the large filter paper 23 allows the working airflow to pass through the filter 2 more easily, and the filter paper 23 forms a cylindrical inner space 25.
  • the filter device further includes a fixing portion 3 and a locking portion 31, wherein the fixing portion 3 is a knob, and the locking portion 31 is a claw portion integrally formed on the knob 3.
  • the inside of the knob 3 has means for mating with the fasteners 27.
  • the preferred threads of the present invention are used as fasteners and may be replaced by other fasteners well known to those skilled in the art.
  • the knob 3 has a substantially cylindrical shape, and its inner surface has a threaded structure that cooperates with the outside of the end hole 26, and a claw portion 31 is disposed therebetween.
  • six claw portions are preferably provided, and the claw portion is disposed at the bottom portion of the knob 32.
  • the center is on the circumference of the center of the circle.
  • the claw extends from the bottom of the fixed knob toward the opening 33 of the knob, and a chamfer 34 is formed at the end of the claw.
  • the claw portion 31 is interposed between the center pillar 124 and the end hole 26 at the time of assembly.
  • the end hole 26 is externally provided with a mouth portion 261.
  • the inner diameter of the mouth portion gradually decreases from top to bottom, and has a curved buffer region 262 at the bottom of the mouth portion, and the arcuate direction of the curved buffer region is curved. It is substantially the same as the curved surface of the claw chamfer 34.
  • the center pillar head 125 has a hat shape, and its outer diameter gradually increases from top to bottom, and its outer diameter is the largest at the hat-shaped jaw portion 130 and its outer portion smoothly and continuously extends to form a curved 127 surface.
  • the knob 3 moves downward along the center pillar 124, and simultaneously drives the claw portion 31 to rotate downward, and the chamfer of the tail end of the claw portion 31 moves downward along the inner surface of the mouth portion 261, and the inner diameter of the mouth portion Gradually reducing the claw chamfer 34 directly against the arcuate buffer 262 and moving inwardly downward along the arcuate buffer, and the claw 31 moves inward to clamp the cap-shaped jaw 130 of the center post 125, further
  • the claw portion 34 of the rotary knob 3 passes through the end of the claw portion of the end hole 26 into the recessed portion 129 formed by the neck portion 126.
  • the claw portion 3111 is locked with the center pillar head 125, and the filter 2 can be firmly fixed to the bracket 10.
  • the knob 3 and the claw portion 31 are injection molded parts, and the claw portion has elasticity, so that the claw portion can be restored to the original shape when the knob 3 and the filter are removed.
  • the knob 3 is fixed by the thread and the end 21, and the thrust generated by the knob 3 and the end 21 is such that the chamfer 34 at the end of the claw 31 is gentle along the arc of the mouth 261.
  • the punching area slides inwardly, and finally the claw portion 31 and the center pillar 124 are locked.
  • the vacuum cleaner 4 shown in Figures 5, 6, and 7, the vacuum cleaner has a dust bucket 40.
  • the upper part of the dust bucket is provided with a head 41.
  • the head 41 has a built-in motor and an impeller (illustrated), and the motor drives the impeller to generate a negative pressure to cause inclusion.
  • the dusty working airflow passes from the dust suction inlet 42 through the dust bucket to the airflow outlet 43, and a duct of the cleaner is formed between the dust suction inlet and the airflow outlet.
  • the vacuum cleaner filter device described above is installed in the lower dust bucket of the handpiece 41, and the filter 2 is sleeved on the bracket 10 and fixed to the bracket 10 by the knob 3.
  • the base of the machine head is provided with an opening (not shown), and one end of the opening communicates with the impeller chamber and the other end communicates with the internal space 25 formed by the filter paper.
  • Embodiment 2 is substantially the same as the vacuum cleaner and the filter device disclosed in the first embodiment, except that the structure of the end hole, the fixing portion and the locking portion of the end cap in the filter device is slightly changed. Only this different structure will be described in detail.
  • the end hole 26' of this embodiment is also disposed through the end cap 21' and has a mouth portion 261', but the mouth portion 261' is substantially hollow straight tubular shape, so that the inner diameter thereof is substantially uniform.
  • the fixing portion of this embodiment is a knob 3', and the locking portion is at least two buckles 28 provided on the mouth portion 261'.
  • the knob 3' is tightened in the same manner as the mouth portion 261' with thread engagement.
  • the at least two snaps 28 are integrally formed on the side wall 263 of the mouth portion 261' and extend downwardly from the top end of the side wall 263.
  • Each of the snaps 28 has a longitudinally extending beveled top surface 29 and defines an inwardly extending hook portion 292 at its end.
  • the number of the buckles 28 of the present embodiment is two, which are disposed in the diameter direction of the mouth portion 261'.
  • the knob 3' will gradually push the inclined top surface 29 of the top buckle 28 inwardly during the downward tightening until the hook portion 292 of the buckle 28
  • the buckles are snapped under the cap-shaped jaws 130 and clamped to each other, thereby completing the transition of the filter device from the unlocked state to the locked state.
  • the third embodiment differs from the second embodiment only in the structure of the buckle.
  • the specific explanation is as follows:
  • the buckle 28' of the embodiment is also integrally formed on the side wall 263 of the mouth portion 261'.
  • the number is also two, and is disposed in the diameter direction of the mouth portion 261'.
  • each of the buckles 28' extends outward (laterally) from the bottom end of the side wall 263, and forms an inclined top surface 29' on the outer side thereof, so that when the knob 3' and the mouth are When the 261 ' is fastened, the knob 3' gradually pushes the inclined top surface 29' of the top buckle 28' in the downward tightening process until the buckle 28' is snapped to the cap-shaped jaw 130 The lower portions are clamped to each other to complete the transition of the filter device from the unlocked state to the locked state.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

一种吸尘器过滤装置（1），其包括过滤器（2）、支架（10）、端帽（21）和固定部（3）。过滤器（2）具有滤纸（23）、密封件（22）和端帽（21），滤纸（23）设置在端帽（21）和密封件（22）之间。端帽（21）上具有贯穿该端帽（21）的端孔（26），过滤器（2）安装在支架（10）上。支架（10）上设有中柱（124），中柱（124）穿过端孔（26）。所述端帽（21）和固定部（3）之间设有锁定部（31），固定部（3）与端帽（21）紧固时锁定部（31）将所述中柱（124）锁紧。该吸尘器过滤装置（1）在实施过程中不存在弹性过盈配合，对过滤装置的固定更加可靠，在使用过程中不会意外脱落。

Description

吸尘器及其过滤装置 技术领域
本发明涉及一种吸尘器及其过滤装置。
背景技术
吸尘器是常用的家庭清洁设备， 吸尘器通过工作气流将尘埃和碎屑吸入尘桶并将工作气流排出。 因此 吸尘器需要具备将工作气流和尘埃以及碎屑从空气中分离的功能。 目前为止， 过滤装置是最常用且最有效 的实现气、 尘分离解决方案。 过滤装置在使用过程中需要经常性的从吸尘器内拆下， 例如经过使用一段时 间的吸尘器过滤装置上会累积大量的灰尘需要将其拆下清洗， 然后重新安装。 在一些设计中过滤装置的过 滤件是釆用滤纸制作的， 滤纸使用一段时间之后其表面积累了大量的灰尘， 此时便需要更换滤纸才能保证 吸尘器的正常运转， 为了方便使用滤纸与过滤装置之间通常是不可拆卸的， 更换滤纸即更换过滤装置。 公 开号为 CN101711657的专利公开了一种可更换过滤装置，其包括一个过滤装置支架，过滤装置套设在该支 架上， 并通过在过滤装置一端具有弹性的端冒， 该端冒上具有端孔， 过滤装置安装时支架上的支撑柱穿过 该端孔，并使端孔保持在支撑柱外径较小的区域。由于上述方案是通过具有弹性的端孔完成安装和固定的， 该弹性结构在反复拆装使用较长的时间后会产生结构老化或弹性失效等问题， 当结构老化或弹性失效时过 滤装置在使用过程中可能会自动脱落， 此外弹性端冒和支撑柱之间是过盈配合在安装和拆卸过程中不方 便。
发明内容
为解决上述问题， 本发明提供一种吸尘器过滤装置， 其结构更加稳固， 在使用过程中不会自动脱落。 为了实现上述发明目的， 本发明提供的主要技术方案如下： 一种吸尘器过滤装置， 其包括过滤器、 支 架、端冒和固定部； 过滤器具有滤纸和密封件； 端冒设置在过滤器的一端， 端冒上具有贯穿该端冒的端孔， 过滤器安装在支架上， 支架上设有中柱， 中柱穿过所述端孔； 其特征在于： 所述端冒和固定部之间设有锁 定部， 所述固定部与端冒紧固时锁定部将所述中柱锁紧。
此外， 本发明还提供如下附属技术方案：
固定部为旋钮， 而锁定部为一体成型在旋钮上的至少两个爪部。
至少两个爪部绕旋钮的中心圆周排列。
至少两个爪部将中柱锁紧时， 爪部位于中柱与端孔之间。
爪部末端形成倒角； 所述端孔设置口部， 口部内径由上至下逐渐减少， 并在底端形成与所述倒角配合的 弧形缓冲区。
旋钮通过紧固螺纹与口部固定。 中柱设置头部， 头部具有帽形檐部， 固定部与端冒紧固时产生的推力使所述爪部与帽形檐部锁紧。 固定部为旋钮， 端孔设置口部， 旋钮与口部相互螺纹紧固。 锁定部为一体成型在口部上的至少两个卡扣。
中柱设置头部， 头部具有帽形檐部， 当旋钮与口部相紧固时， 所述卡扣与帽形檐部相互卡紧。
卡扣具有斜顶面， 当旋钮与口部相紧固时， 旋钮向内推顶斜顶面使得卡扣与帽形檐部相互卡紧。 至少两个卡扣一体成型在口部的侧壁上。
卡扣自口部的侧壁顶端向下纵向延伸， 并具有斜顶面和钩部。 卡扣也可自口部的侧壁底端横向延伸， 并具有斜顶面。 一种具有上述过滤装置的吸尘器， 其还包括： 负压空气动力源、 尘桶、 空气入口、 以及出口， 负压空 气动力源产生负压使吸尘空气在入口和出口之间的风道流通。
相比于现有技术， 本发明的优势在于： 过滤装置通过支架和固定部和锁定部安装在吸尘器的尘桶内， 固定部和锁定部为注塑成型件， 且固定部与支架的端冒紧固时， 锁定部将所述中柱锁紧。 在实施过程中不 存在弹性过盈配合， 对过滤装置的固定更加可靠， 旋钮与端冒锁紧时能够承受更大的外力从而保证过滤装 置在使用过程中不会意外脱离。
附图说明
图 1是对应于本发明第一实施例的过滤装置示意图。
图 2是图 1的过滤装置剖面示意图及其局部放大图。
图 3是图 1的过滤装置分解结构示意图。
图 4是图 3中旋钮的放大视图。
图 5是应用图 1中过滤装置的吸尘器整机示意图。
图 6是图 5的机头部分及过滤装置示意图
图 7是图 5中吸尘器剖面示意图。
图 8是对应于本发明第二实施例的过滤装置在解锁状态时的剖视图。
图 9是图 8的过滤装置在锁紧状态时的剖视图。
图 10是对应于本发明第三实施例的过滤装置在解锁状态时的剖视图。
图 11是图 10的过滤装置在锁紧状态时的剖视图。
具体实施方式
实施例一 参照图 1、 2和 3所示的吸尘器过滤装置 1， 在过滤器 2的底部设置一支架 10， 支架 10是由圆盘形的 底座 11和圆柱状的芯 12组成， 芯 12—体地设置在圆形底座上。 芯 12具有环形相间排列的环形筋 120， 相邻筋之间形成开口 121，该开口 121用于通过吸尘器或其他清洁设备的工作气流， 围绕芯 12的周围还设 置有纵向排列的筋 122， 纵向排列的筋 122与环形筋 120—体设置并连接相邻设置的环形筋 120。 在芯 12 的上端还设置有圆形的平板 123， 圆形平板的外部与纵向延伸的筋 122—体设置。 圆形平板 123的中心向 上突起形成大体呈圆柱形的中柱 124， 中柱 124与平板 123—体设置。 中柱 124的上端具有一头部 125， 头部 125的下方设置一颈部区域 126， 颈部区域 126的外径小于头部 125边缘的外径。 过滤器装在支架 10 的外部， 端冒 21设置在过滤器 2的上端部， 过滤器 2的底部设置橡胶密封件 22， 过滤器 2安装在支架 10 上时， 橡胶密封件 22与底座 11相互密封。 在端冒 21和橡胶密封件 22之间设置滤纸 23， 滤纸 23在端冒 21和橡胶密封件 22之间周向排布， 滤纸的外表面形成相间排列的脊 24， 所述脊 24能够增大滤纸 23的过 滤面积并使工作气流更容易的通过过滤器 2， 滤纸 23形成圆筒形的内部空间 25。 在所述端冒 21的中心具 有一端孔 26， 该端孔 26贯穿端冒 21并与滤纸 23形成的内部空间 25相连通， 在端孔 26的外部具有紧固 件 27。 进一步参照图 2、 图 3和图 4， 上述过滤装置还包括固定部 3和锁定部 31， 其中固定部 3为一种旋钮， 而锁定部 31为一体成型在旋钮 3上的爪部。 旋钮 3的内侧上具有与紧固件 27配合的装置， 本发明优选的 釆用螺纹作为紧固件， 也可以釆用本领域技术人员所熟知的其他紧固件代替。 过滤器 2安装时需要先将过 过滤器 2与支架 10对准， 然后将芯 12插入内部空间 25内并让平板 123上的中柱 124穿过端冒 21上的端 孔 26，最后将旋钮 3与端冒 21旋紧。旋钮 3大致呈圆柱形，其内表面具有与端孔 26外部配合的螺纹结构， 在其中间设置有爪部 31， 本实施例优选的设置了 6个爪部， 爪部设置在以旋钮底部 32中心为圆心的圆周 上。爪部从固定旋钮的底部向旋钮的开口 33延伸， 在爪部的末端形成倒角 34。所述爪部 31在装配时介于 中柱 124与端孔 26之间。 所述端孔 26外部设置口部 261， 口部的内径从上至下逐渐减小， 并且在口部的 底部具有一弧形的缓冲区域 262，该弧形的缓冲区域的弧面弯曲的方向与爪部倒角 34的弧面大致相同。所 述中柱头部 125呈帽形， 其外径由上至下逐渐增加其外径最大处为帽形檐部 130并且其外部平滑连续地延 伸形成弧形 127表面,。 中柱头部 125下方与颈部 126相连， 头部的下表面 128与颈部 126垂直， 颈部在中 柱上形成一向内凹陷 129的区域 。 当使用者旋转旋钮 3时， 旋钮 3沿中柱 124向下移动， 同时带动爪部 31旋转向下移动，爪部 31尾端的倒角沿口部 261的内表面向下移动， 口部的内径逐渐减小爪部倒角 34与 弧形缓冲区 262直接抵触并沿弧形缓冲区同时向内向下移动， 爪部 31 向内移动将中柱头部 125的帽形檐 部 130夹紧，进一步旋转旋钮 3所述爪部 34穿越端孔 26爪部的末端进入颈部 126形成的凹陷区域 129内。 此时爪部 3111与中柱头部 125之间锁紧， 过滤器 2可以牢固的固定在支架 10上。 旋钮 3和爪部 31是注 塑成型件， 爪部具有弹性， 因此当旋钮 3与过滤器拆除后爪部能够恢复成原有的形状。 总之， 旋钮 3通过 螺纹与端冒 21固定， 旋钮 3与端冒 21旋紧时其产生的推力使爪部 31末端的倒角 34沿口部 261的弧形缓 冲区向内滑动， 最终爪部 31与中柱 124之间锁紧。 参照图 5、 6、 7所示的吸尘器 4， 吸尘器具有一尘桶 40， 尘桶上部设置一机头 41， 机头 41内置电机 和叶轮 (图示出)， 电机驱动叶轮产生负压使夹杂灰尘的工作气流从吸尘入口 42经尘桶到达气流出口 43， 在吸尘入口和气流出口之间形成吸尘器的风道。 上述的吸尘器过滤装置安装在机头 41 的下部尘桶内， 过 滤器 2套设在支架 10上并通过旋钮 3固定在支架 10上。 机头的底座上设置有开口 (图中未示出)， 该开口 一端与叶轮腔连通另一端与滤纸形成的内部空间 25 连通， 吸尘器工作时工作气流从吸尘入口进入尘桶， 随之工作气流由滤纸的外部进入内部空间， 工作气流中携带的碎屑沉积在滤纸上， 最后清洁的气流经过吸 尘器出口 43排出。 实施例二 本实施例二与第一实施例所揭示的吸尘器及其过滤装置的构造大致相同， 区别仅在于过滤装置中的端 帽的端孔、 固定部和锁定部的结构稍有变化， 以下仅对此不同结构进行详细描述。 本实施例的端孔 26 ' 同样贯穿端帽 21 ' 设置， 并具有口部 261 ' ， 但口部 261 ' 大致为中空的直管状， 故而其内径大小基本一致。 本实施例的固定部为旋钮 3 ' ， 而锁定部为设置在口部 261 ' 上的至少两个卡扣 28。 旋钮 3 ' 与口部 261 ' 同样以螺纹啮合而紧固。 该至少两个卡扣 28—体成型在口部 261 ' 的侧壁 263上并从侧壁 263顶端 向下延伸。 各卡扣 28具有纵向延伸的斜顶面 29， 并且在其末端形成向内延伸的钩部 292。 本实施例的卡 扣 28数量为两个， 其设置在口部 261 ' 的直径方向上。 这样， 当旋钮 3 ' 与口部 261 ' 相紧固时， 旋钮 3 ' 在向下旋紧的过程中会逐渐向内推顶卡扣 28的斜 顶面 29， 直至卡扣 28的钩部 292卡扣至上述帽形檐部 130的下方并相互卡紧， 从而完成过滤装置从解锁 状态至锁紧状态的转换。
实施例三 本实施例三与实施例二的不同之处仅在于上述卡扣的结构不同， 具体解释如下： 本实施例的卡扣 28 ' 同样一体成型在口部 261 ' 的侧壁 263上， 并且其数量也为两个， 设置在口部 261 ' 的直径方向上。 与实 施例二不同的是， 各个卡扣 28 ' 自侧壁 263的底端向外（横向）延伸， 并在其外侧形成倾斜设置的斜顶面 29 ' ， 这样， 当旋钮 3 ' 与口部 261 ' 相紧固时， 旋钮 3 ' 在向下旋紧的过程中会逐渐向内推顶卡扣 28 ' 的斜顶面 29 ' ， 直至卡扣 28 ' 卡扣至上述帽形檐部 130的下方并相互卡紧， 从而完成过滤装置从解锁状 态至锁紧状态的转换。
上述实施方式是本发明一种较佳的实施方式， 但本发明的保护范围并不限于此， 凡遵循本发明精神实 质所做的更改均应当在本发明的保护范围内。

Claims

权 利 要 求 书
1. 一种吸尘器过滤装置， 其包括过滤器、 支架、 端冒和固定部； 过滤器具有滤纸和密封件； 端冒设置在 过滤器的一端， 端冒上具有贯穿该端冒的端孔， 过滤器安装在支架上， 支架上设有中柱， 中柱穿过所 述端孔； 其特征在于： 所述端冒和固定部之间设有锁定部， 所述固定部与端冒紧固时锁定部将所述中 柱锁紧。
2. 如权利要求 1所述的吸尘器过滤装置， 其特征在于： 固定部为固定钮， 而锁定部为一体成型在固定钮 上的至少两个爪部。
3. 如权利要求 2所述的吸尘器过滤装置， 其特征在于： 至少两个爪部绕固定钮的中心圆周排列。
4. 如权利要求 2所述的吸尘器过滤装置， 其特征在于： 爪部将中柱锁紧时， 爪部位于中柱与端孔之间。
5. 如权利要求 4所述的吸尘器过滤装置， 其特征在于： 爪部末端形成倒角； 所述端孔设置口部， 口部内径 由上至下逐渐减少， 并在底端形成与所述倒角配合的弧形缓冲区。
6. 如权利要求 5所述的吸尘器过滤装置， 其特征在于： 所述固定钮通过紧固螺纹与口部固定。
7. 如权利要求 2所述的吸尘器过滤装置， 其特征在于： 所述中柱设置头部， 头部具有帽形檐部， 固定部 与端冒紧固时产生的推力使所述爪部与帽形檐部锁紧。
8. 如权利要求 1 所述的吸尘器过滤装置， 其特征在于： 固定部为固定钮， 端孔设置口部， 固定钮与口部 相互螺纹紧固。
9. 如权利要求 8所述的吸尘器过滤装置， 其特征在于： 锁定部为一体成型在口部上的至少两个卡扣。
10. 如权利要求 9所述的吸尘器过滤装置， 其特征在于： 所述中柱设置头部， 头部具有帽形檐部， 当固定 钮与口部相紧固时， 所述卡扣与帽形檐部相互卡紧。
11. 如权利要求 10所述的吸尘器过滤装置， 其特征在于： 所述卡扣具有斜顶面， 当固定钮与口部相紧固 时， 固定钮向内推顶斜顶面使得卡扣与帽形檐部相互卡紧。
12. 如权利要求 8所述的吸尘器过滤装置， 其特征在于： 所述至少两个卡扣一体成型在口部的侧壁上。
13. 如权利要求 12所述的吸尘器过滤装置， 其特征在于： 所述卡扣自口部的侧壁顶端向下纵向延伸， 并 具有斜顶面和钩部。
14. 如权利要求 12所述的吸尘器过滤装置， 其特征在于： 所述卡扣自口部的侧壁底端横向延伸， 并具有 斜顶面。
15. 一种具有如权利要求 1-14任一项所述过滤装置的吸尘器。
16. 如权利要求 15所述的吸尘器， 其特征在于其还包括： 负压空气动力源、 尘桶、 空气入口、 以及出口， 负压空气动力源产生负压使吸尘空气在入口和出口之间的风道流通。
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