CN105816101B - Electric dust collector - Google Patents

Abstract

The present invention provides an electric vacuum cleaner, which can be used as a stick type or a portable type, has a cyclone type dust collecting device capable of maintaining suction, and has both centrifugal separation performance of dust, small size and light weight, and is easy to use. This electric vacuum cleaner has a vacuum cleaner main body including an electric blower, a suction port, and a dust collector. The dust collector includes a substantially cylindrical outer cylinder and a substantially cylindrical inner cylinder built into the outer cylinder. The inner cylinder and the outer cylinder are arranged substantially concentrically. The outer cylinder has an inlet at the side, and the inlet communicates with one end of an introduction pipe that is built into the main body of the vacuum cleaner and is open at both ends. The introduction pipe The other end is provided with the suction port, the introduction pipe is located at the side of the dust collector, and the suction port is provided between the introduction pipe and the dust collector.

Description

electric vacuum cleaner

technical field

The present invention relates to electric vacuum cleaners.

Background technique

In recent years, the methods of electric vacuum cleaners have become diversified. In addition to the existing floor mobile vacuum cleaners and upright vacuum cleaners, there are self-supporting walking vacuum cleaners, vacuum cleaners for bedding cleaning, and vertical (pole) portable dual-purpose vacuum cleaners. vacuum cleaners etc. Among them, vacuum cleaners that can be used as both a stick type and a portable vacuum cleaner are generally called DC stick type vacuum cleaners, and many products are equipped with storage batteries such as nickel metal hydride batteries or lithium ion batteries.

This kind of DC rod vacuum cleaner has the following structure. The electric blower is driven by a battery, and the dusty air sucked from the suction body is introduced into the main body of the vacuum cleaner. Exhaust from the main body of the vacuum cleaner. Furthermore, it is widely known that a compact case including an electric blower, a dust collector, and a storage battery is operated as a vacuum cleaner body (portable), and it is mounted on a pole body, which is a housing housing the case, to be used as a stick type.

Japanese Unexamined Patent Application Publication No. 2012-228360 (Patent Document 1) describes a method in which, in an electric vacuum cleaner that can be used as a portable device by separating the above-mentioned vacuum cleaner main body, on the support main body that accommodates the vacuum cleaner main body, the back side The upper side is open among the substantially half and the substantially half of this back part, and accommodates a vacuum cleaner main body detachably.

However, in this form, when used as a stick type, there is a problem that the housing is large and difficult to handle.

To solve this problem, inventions described in Patent Document 2 to Patent Document 4 shown below are known as prior art.

Japanese Patent No. 5222375 (Patent Document 2) describes an electric vacuum cleaner that can be separated from the mobile vacuum cleaner so that the mobile vacuum cleaner can be used as a mobile vacuum cleaner instead of a part of the stick vacuum cleaner. Tube.

In Japanese Patent Application Laid-Open No. 2002-85297 (Patent Document 3), it is described that the following electric vacuum cleaner is built in the front of the electric blower built in the main body, and the dust collecting case with the filter body is installed with an engaging part at one end of the main body. The locking part engages, and the end buckle provided at the other end engages with the concave part of the main body, thereby locking the dust collecting case freely.

Japanese Unexamined Patent Application Publication No. 2004-24887 (Patent Document 4) describes an electric vacuum cleaner which is a floor-moving type vacuum cleaner in which a cyclone dust collector is arranged on the opposite side of the floor surface with respect to a connecting duct.

prior art literature

patent documents

Patent Document 1: Japanese Patent Laid-Open No. 2012-228360

Patent Document 2: Japanese Patent No. 5222375

Patent Document 3: Japanese Patent Laid-Open No. 2002-85297

Patent Document 4: Japanese Patent Laid-Open No. 2004-24887

Contents of the invention

The problem to be solved by the invention

When using a DC stick vacuum cleaner in general households, it is preferable that it is small and easy to use. In addition, if a cyclone-type dust collector capable of relatively maintaining suction force is provided, a dust collector with high separation performance of dust that centrifugally separates air and dust is required. In addition, since a small and lightweight electric blower is installed, the suction force is generally inferior to that of a floor-moving electric vacuum cleaner, and the pressure loss of the dust collector should be as small as possible. Summarizing these required performances, DC stick cleaners equipped with a cyclone-type dust collector capable of maintaining attractiveness are required to maintain small size, light weight, and attractive strength.

Since the electric vacuum cleaner described in Patent Document 1 is used as a portable vacuum cleaner by separating the main body of the vacuum cleaner, there is a problem of size and weight reduction as described above. In addition, since the dust collector is not a cyclone type, if a lot of dust accumulates in the dust collector, the suction force will decrease.

The electric vacuum cleaner described in Patent Document 2 can maintain the suction force by being equipped with a cyclone-type dust collector. When cleaning, when the vacuum cleaner body is placed close to the floor under a bed or a sofa, etc., the dust collector is relatively large in the vertical direction, making it difficult to close to the floor. Lowering the height of the dust collector is also considered, but it is not preferable because the amount of dust that can be sucked decreases.

In the electric vacuum cleaner described in Patent Document 3, the central axis of the extension duct is arranged parallel to the central axis of the cyclone dust collector, and the dust collector is provided behind the extension duct, so that the height can be reduced compared with Patent Document 2. However, in a portable vacuum cleaner with the suction nozzle and the extension duct removed, if the main body of the vacuum cleaner is tilted in a vertical direction, it is difficult to perform cleaning at hand. In addition, in order to improve the centrifugation performance, it is necessary to increase the height of the dust collector, so the vertical direction of the cleaner main body becomes larger and there is a problem of downsizing.

The electric vacuum cleaner described in Patent Document 4 is a floor-moving type. However, compared with Patent Document 3, the arrangement of the dust collector is different and the dust collector is installed in front of the extension duct. When the extension duct is close to the floor surface, it is a method that the dust collector does not come into contact with the floor surface. However, in the DC stick cleaner, the posture of the cleaner main body varies during cleaning, and the suction port may be located on the upper side. At this time, when the method of patent document 4 is applied to a DC stick cleaner, dust may return to the inside of an extension duct after operation stop, and the sucked dust may return to the outside again. In order to solve this problem, it is also considered to install a check valve at the inlet of the dust collector, but there is also a problem that the pressure loss increases and the suction force decreases because dust is caught in the check valve or the check valve itself becomes a ventilation resistance. .

Therefore, an object of the present invention is to provide an electric vacuum cleaner that can be used as a stick type or a portable type, has a cyclone type dust collector that can maintain suction, and is compact, lightweight, and attractive, and is easy to use.

Technical solution to the problem

In order to achieve the above object, the electric vacuum cleaner according to the present invention is characterized in that it has a vacuum cleaner main body including an electric blower, a suction port, and a dust collecting device. The substantially cylindrical inner cylinder of this outer cylinder is arrange|positioned substantially concentrically with the said outer cylinder, and the said outer cylinder has an inflow port in a side part, and this inflow port communicates with one end of the introduction pipe, and this introduction pipe is built-in. The vacuum cleaner main body is open at both ends, the other end of the introduction pipe is provided with the suction port, the introduction pipe is located at the side of the dust collector, and the suction port is provided between the introduction pipe and the dust collector.

In addition, the electric vacuum cleaner described above is characterized in that the dust collector is detachable from the vacuum cleaner main body.

In addition, the above-mentioned electric vacuum cleaner is characterized in that the introduction pipe has a curved portion, the curved portion of the introduction pipe has an extension portion extending in the vertical direction, the central axis of the extension portion is arranged approximately parallel to the central axis of the dust collector, and the upper part of the extension portion It is arranged on the side of the dust collecting device, the lower part of the extension part is coaxial with the central axis of the dust collecting device, and the suction port is arranged between the introduction pipe and the dust collecting device.

The effect of the invention

According to the electric vacuum cleaner of the present invention, the side portion (upstream side) of the dust collector is equipped with an introduction pipe with front and rear openings, the upper part of the introduction pipe communicates with the dust collector and the lower part has a suction port, and a curved part is provided on the introduction pipe so that the curved part Extend in the up and down direction of the dust collecting device, set the central axis of the dust collecting device parallel to the central axis of the extending part of the introduction pipe, set the upper extending part at the approximate outermost peripheral position of the dust collecting device, and set the lower extending part in parallel with the extending part of the dust collecting device The central axis is located on the same axis, and the suction port is provided between the introduction pipe and the dust collector so that when air containing dust is sucked from the suction port, the dust is pushed toward the outer peripheral side of the dust collector by inertial force. Accordingly, it is possible to provide an electric vacuum cleaner in which the centrifugal separation performance is improved by being conveyed into the dust collector and turning around the inner wall surface of the outer cylinder that is farthest from the outer circumference of the inner cylinder.

In addition, by providing a curved portion on the introduction pipe, the lower extension of the introduction pipe can be shortened when the dust collector is brought close to the floor during cleaning, so the vertical length of the main body of the vacuum cleaner can be shortened, and compactness and improved centrifugal performance can be provided. electric vacuum cleaner.

Description of drawings

Fig. 1 is a perspective view showing the overall appearance of the electric vacuum cleaner according to the embodiment of the present invention when it is stored.

Fig. 2 is a perspective view showing the overall appearance when the cleaner body according to the embodiment of the present invention is used as a stick type.

Fig. 3 is an external perspective view of a vacuum cleaner body in a state in which a handle is folded according to the embodiment of the present invention.

4 is an external perspective view of the charging stand according to the embodiment of the present invention.

Fig. 5 is an external perspective view of the vacuum cleaner main body with the suction nozzle body removed according to the embodiment of the present invention.

Fig. 6 is a right side view of the vacuum cleaner main body when used as a portable device according to the embodiment of the present invention.

Fig. 7 is a central cross-sectional view of the cleaner main body shown in Fig. 6 according to the embodiment of the present invention.

Fig. 8 is an external perspective view of a case where a tip brush is used when used as a portable body according to an embodiment of the present invention.

Fig. 9 is an external front view of the dust collector according to the embodiment of the present invention.

Fig. 10 is an exploded view of the dust collector according to the embodiment of the present invention.

Fig. 11 is an A-A sectional view showing the dust collector shown in Fig. 9 according to the embodiment of the present invention.

Fig. 12 is a front view of the inner cylinder according to the embodiment of the present invention.

Fig. 13 is an exploded view of the inner cylinder according to the embodiment of the present invention.

Fig. 14 is a B-B sectional view of the inner cylinder shown in Fig. 12 according to the embodiment of the present invention.

Fig. 15 is a front view with the bottom cover opened in the outer cylinder according to the embodiment of the present invention.

Fig. 16 is a right side view with the bottom cover opened in the outer cylinder according to the embodiment of the present invention.

Fig. 17 is a C-C sectional view of the outer cylinder shown in Fig. 16 according to the embodiment of the present invention.

Fig. 18 is a D-D sectional view of the outer cylinder shown in Fig. 16 according to the embodiment of the present invention.

19 is a cross-sectional view showing another shape of the dust reentry prevention surface according to the embodiment of the present invention.

20 is a cross-sectional view showing another shape of the dust return prevention surface according to the embodiment of the present invention.

Fig. 21 is an E-E sectional view of the dust collector shown in Fig. 11 according to the embodiment of the present invention.

Fig. 22 is a cross-sectional view showing an operation when throwing away garbage in Fig. 21 .

Fig. 23 is a perspective view showing only the dust collector and the introduction pipe of the vacuum cleaner main body in the embodiment of the present invention.

Fig. 24 is a front view showing a dust collector and an introduction pipe in an embodiment of the present invention.

Fig. 25 is a cross-sectional view taken along line F-F shown in Fig. 24 in the embodiment of the present invention.

Fig. 26 is a bottom view showing a dust collector and an introduction pipe in an embodiment of the present invention.

Fig. 27 is a G-G cross-sectional view shown in Fig. 6 in the embodiment of the present invention.

Fig. 28 shows the flow of air inside the vacuum cleaner body in the embodiment of the present invention.

Fig. 29 is a front view of the electric vacuum cleaner in a state where the telescoping duct is extended without turning the handle in the embodiment of the present invention.

Fig. 30 is a front view of the electric vacuum cleaner in a state where the telescoping duct is shrunk and the handle is turned in the embodiment of the present invention.

In the figure: 1 main body of vacuum cleaner; 2 handle; 3 suction body; 4 duct housing; 5 telescopic duct; 6 charging platform; 7 motor housing; 8 battery housing; Button; 12 Dust collection device; 13 Suction body loading and unloading button; 14 Introductory pipe housing; 15 Suction inlet; 17 Electric blower; 18 Battery; 20 Front brush; 24 Handle support shaft; 25 Charging platform base; 26 Charging platform Bracket part; 28 charging station terminal part; 29 main body fixing protrusion; 30 application suction body; 32 application suction body fixing protrusion; 50 shell main body; 101 handle fixing clip; 106 exhaust port; 108 handle clip spring; Housing; 110 main body substrate; 111 main body LED; 112 airtight surface; 113 suction part; 115 protective cover; 116 anti-vibration airtight rubber; 120 D lock button spring; 128 outer cylinder; 128a filter housing receiving part; 128b, 131b flange part; 129 inner cylinder; 129a upper cylinder; 129b lower cylinder; 129e bottom surface; 130 dust collection filter; 130a flange; 130b, 130c, 137, 148, 157, 162 seal; 131 filter housing; 131a opening; 132 upper cover; 132a airtight surface; 133 bottom cover ; 134 dust separation part; 135 dust containing part; 136 mesh part; 138 space; 139 umbrella part; 139a space; 139a upper surface; 139b rib; 140 cylinder; Spring shaft; 141c Notch; 142 Piston; 143 Stopper; 144 Screw; 145 Spring; 146 Flange; 147 Filter part; 152 ring rib; 153 cover locking cover; 154 button; 155 claw; 156 hook; 158 hinge; 160c inclined piping; 161 inlet pipe outlet; 170 dust; 180 inertial force; 200, 201, 202, 203, 204, 205 flow.

Detailed ways

Hereinafter, representative embodiments of the present invention will be described in detail with appropriate reference to the drawings. However, the present invention is not limited to the following embodiments. Hereinafter, as shown in FIG. 1 and the like, when the electric vacuum cleaner 100 is used as a stick type, the direction in which the handle 2 is located is referred to as an upward direction, and the direction in which the suction port 15 is located is referred to as a downward direction. As for the vacuum cleaner main body 1, the direction in which the motor case part 7 and the battery case part 8 are located is made into an upward direction, and the direction in which the suction port 15 is located is made into a downward direction. In addition, as shown in FIG. 1 etc., the side where the telescoping duct 5 (duct case part 4) of the electric vacuum cleaner 100 exists is made into a front direction, and the direction in which the dust collector 12 is located is made into a rear direction. In addition, in electric vacuum cleaner 100 , the right direction and the left direction are defined on the basis of the front direction as the front, and the left side is defined as the right direction and the right side is defined as the left direction on the page of FIG. 1 . In addition, as shown in FIG. 5, etc., when the suction body 3 is detached from the electric vacuum cleaner 100 and used as a portable device, the side where the suction port 15 of the vacuum cleaner main body 1 is located is the downward direction, and the folded filter 130 The side where the duct housing part 4 is located is the front direction, the side where the dust collector 12 is located is the rear direction, the left side of the paper is the right direction, and the right side is the left direction. . In addition, the up, down, left, right, front and back of the charging stand 6 shown in FIG. 4 and the like, and the dust collector 12 shown in FIG. 9 and the like are the same as those in FIG. 1 .

First, the overall configuration of electric vacuum cleaner 100 according to the embodiment example of the present invention will be described.

The electric vacuum cleaner 100 in this embodiment can be used mainly in the following two states, namely: the state where the handle 2 is not rotated relative to the telescopic duct 5 as shown in Figures 1, 2 and 5; and as shown in Figures 3 and 6 ~ Fig. 8 shows the state that the handle 2 is rotated relative to the telescopic duct 5.

Fig. 1 is an external perspective view showing electric vacuum cleaner 100 during storage and charging according to an embodiment of the present invention. Fig. 2 is an external perspective view when the electric vacuum cleaner 100 is used as a stick type in the embodiment of the present invention. Fig. 3 is an external perspective view of electric vacuum cleaner 100 in a state in which a handle is folded in the embodiment of the present invention.

＜Electric Vacuum Cleaner 100＞

100 shown in FIG. 1 is an electric vacuum cleaner, and 6 is a charging stand. The electric vacuum cleaner 100 has a vacuum cleaner main body 1 , a nozzle body 3 and a dust collector 12 . The suction mouth body 3 is detachably arranged on the lower front end of the vacuum cleaner main body 1 . The dust collecting device 12 is detachably arranged at the rear of the vacuum cleaner main body 1 .

In addition, the electric vacuum cleaner 100 of this embodiment example is a charging type vacuum cleaner used as a power supply after charging the battery 18 with the charging stand 6, but it may also be equipped with a power cord on the vacuum cleaner main body 1 and used as a commercially available vacuum cleaner. AC-type vacuum cleaner use.

<Vacuum cleaner body 1>

Next, the structure of the cleaner main body 1 in this embodiment example is demonstrated.

The cleaner body 1 includes a case body 50 and a handle 2 , and the case body 50 has a motor case portion 7 , a battery case portion 8 , a duct case portion 4 , and an introduction pipe case portion 14 .

The motor case portion 7 is a substantially cylindrical portion. The battery case portion 8 is a substantially box-shaped portion. The duct housing portion 4 is a substantially cylindrical portion. An electric blower 17 is built in the motor case portion 7 (see FIG. 7 ). A battery 18 is built in the battery case portion 8 (see FIG. 7 ). A telescoping duct 5 can be built in the duct housing part 4 . An introduction tube 160 is built in the introduction tube housing part 14 .

The arrangement of each part in the cleaner main body 1 is as follows.

As shown in Figures 1, 2 and 5, in the state of not turning the handle 2, the handle 2 is located at the upper part of the vacuum cleaner main body 1, the suction port 15 is located at the lower part, and the duct housing part 4 is located between the suction port 15 and the handle 2. The motor housing part 7 is located at the rear upper part of the duct housing part 4 . The battery case portion 8 is located at the rear upper portion of the conduit case portion 4 and at a position rearward of the motor case portion 7 . The introduction tube housing part 14 is located in the right direction of the catheter housing part 4 .

Moreover, the bottom part of the cleaner main body 1 (duct case part 4) is equipped with the suction-mouth body detachment button 13. As shown in FIG. The nozzle body 3 can be detached from the cleaner main body 1 by pressing the nozzle body detachment button 13 .

The handle 2 has operation buttons 11a and 11b, and a telescopic duct 5 provided at the lower portion of the handle 2 so as to be able to expand and contract in the vertical direction. In addition, the handle 2 is provided with a mechanism (handle support shaft 24 ) that is rotatable with respect to the telescopic duct 5 . By contracting the telescoping duct 5 and turning the handle 2 relative to the telescoping duct 5, the suction body 3 can be detached from the cleaner body 1 and the vacuum cleaner body 1 can be compacted in the vertical direction for portable use. In addition, it can also be used in a compact state (state shown in FIG. 3 ) in which the mouthpiece body 3 is attached and the handle 2 is rotated with respect to the telescopic duct 5 .

In addition, instead of the mouthpiece body 3, the application mouthpiece body 30 may be provided as an accessory. The application suction body 30 is installed on the suction port 15 for use. In order to clean the narrow place where the suction body 3 cannot enter, the front end of the application suction body 30 is preferably formed in a shape smaller than the front end of the suction body 3 . In addition, in order to clean a high place that cannot be reached with a portable device, it is preferable to have a retractable structure.

Next, the structures of the handle 2 and the telescopic duct 5 according to the embodiment of the present invention will be described. As mentioned above, the handle 2 has the operation buttons 11a and 11b. Since the handle 2 has the operation button 11b, as shown in FIG. Since the operation buttons 11b are also exposed on the surface of the vacuum cleaner, the power supply can be easily turned on and off.

The surface of the handle 2 is preferably made of a soft material such as thermoplastic resin so that the user can easily hold it by hand. In addition, it is preferable to provide an anti-slip shape of the handle or the like so as to prevent the cleaner main body 1 from slipping while the user is cleaning.

Fig. 5 shows a perspective view of the vacuum cleaner main body 1 in a state where the telescopic duct 5 is shrunk and accommodated in the telescopic duct part 4 and the suction nozzle body 3 is detached. It is a side view of the vacuum cleaner main body 1 in the state of the case part 4.

The handle 2 is rotatably supported by a handle support shaft 24 provided at one end of the telescopic duct 5 . When the electric vacuum cleaner 100 is used as a stick type, the handle 2 is erected (without turning) and the telescoping duct 5 is extended to clean the floor surface. The details of the internal fixing structure and rotation mechanism of the handle support shaft 24 are omitted. By pressing the handle support shaft 24, the lock of the rotation mechanism is released, and the handle 2 moves forward around the handle support shaft 24 (catheter housing part 4 side) turn.

The telescopic duct 5 is supported in a duct case 4 provided in the cleaner main body 1 so as to be able to expand and contract. The details of the expansion and contraction and locking mechanism of the telescopic tube 5 are omitted, and the telescopic tube 5 expands and contracts in the vertical direction by pressing the telescopic button 10 . In addition, a locking mechanism is provided so that the telescopic duct 5 does not shrink when the user is using the cleaner main body 1 . In addition, the telescopic length of the telescopic conduit 5 can also be set to be adjustable in multiple stages.

In this way, when using the electric vacuum cleaner 100 as a portable device by using the telescopic mechanism of the telescopic duct 5 and the rotation mechanism of the handle 2, the user can arbitrarily shrink the telescopic duct 5, fold the handle 2, and change the mode. In addition, by being portable, it can be stored in a place with a low height at the time of storage.

Next, the state at the time of using the vacuum cleaner main body 1 which concerns on embodiment of this invention as a portable is demonstrated.

The duct case part 4 provided on the front side of the cleaner main body 1 is equipped with the handle fixing clip 101 biased upward by the handle clip spring 108. As shown in FIG. The handle fixing clip 101 fits into a protrusion (not shown) provided at the end of the handle 2 , so that the handle 2 can be fixed to the catheter case 4 . When the handle fixing clip 101 is slid downward, the handle fixing clip 101 is detached from the protrusion, and the handle 2 can be rotated away from the cleaner main body 1 .

＜Front brush 20＞

The front-end|tip part (lower side) of the cleaner main body 1 is equipped with the front-end|tip brush 20 which is rotatable with respect to a front-end|tip part. The front end brush 20 has bristle portions in three directions. Moreover, the cleaner main body 1 has a bristle part on the rear side of the front end part. As shown in FIG. 5 , when the front-end brush 20 is turned for storage, the bristle portion of the front-end brush 20 faces upward. The bristle part of the front-end|tip part of the cleaner main body 1 is the state which faced the front direction. As shown in FIG. 8 , when the front-end brush 20 is rotated for use, the bristle portion of the front-end brush 20 and the bristle portion of the front end of the cleaner body 1 are both facing forward, and the two bristle portions are combined to surround The surroundings of the suction port 15 are provided. By using the tip brush 20 and turning it so that the two bristle portions are on the cleaning surface side, the gap between the brush and the cleaning surface can be reduced to improve suction performance, and the cleaning surface can be cleaned without damage.

＜Charging stand 6＞

The configuration of the charging stand 6 in this embodiment example will be described. FIG. 4 shows an external perspective view of the charging stand 6 .

The charging stand 6 is composed of a base portion 25 and a stand portion 26 , and the stand portion 26 is detachably attached to the base portion 25 . In addition, the base part 25 and the stand part 26 may not be detachable, but they are desirably detachable in order to improve storage and packing properties.

The base portion 25 has a substantially box shape. The base part 25 is equipped with a power supply cord at the rear, and has a charging board (not shown) inside. A counterweight (not shown) is provided inside the base portion 25 . At the rear of the base part 25, a substantially cylindrical application nozzle body fixing protrusion 32 protruding upward is provided. The fixed protrusion 32 of the mouthpiece body can be inserted into the mouthpiece body 30 for storage. The base portion 25 is a portion on which the mouthpiece body 3 is placed. Therefore, the area of the upper surface of the base portion 25 is preferably larger than the area of the mouthpiece body 3 .

The bracket portion 26 has a substantially box-shaped portion, and a substantially semicylindrical portion located on the box-shaped portion. On the upper surface of the stand portion 26 (the upper surface of the substantially semicylindrical portion of the stand portion 26 ), there is a protruding charging stand terminal portion 28 .

The power supply cord in the base part 25, the charging board, and the charging stand terminal part 28 of the stand part 26 are electrically connected by wiring (not shown). The wiring is accommodated inside the base portion 25 and the bracket portion 26 .

The protrusion-shaped charging stand terminal portion 28 can be fitted into the concave-shaped body terminal portion 9 of the cleaner body 1 described later. At this time, the charging stand terminal portion 28 and the main body terminal portion 9 are fitted and fixed in a state where they are electrically connected. The storage battery 18 can be charged by fitting the charging stand terminal portion 28 with the main body terminal portion 9 in a state where the power supply cord of the charging stand 6 is connected to an outlet of a commercial power supply. In addition, the charging stand 6 can be used as a storage stand when the vacuum cleaner main body 1 is fixed and stored in a state where the power supply cord is not connected to the outlet. The counterweight inside the base part 25 has an effect that it is difficult to fall down when the cleaner main body 1 is fixed.

<Motor case part 7, battery case part 8>

Hereinafter, the structure of the motor case part 7 and the battery case part 8 which concerns on embodiment of this invention is demonstrated using FIG. 7. FIG. Fig. 7 is a central sectional view in the portable form shown in Fig. 6 . In the center of the motor housing portion 7, an electric blower 17 is arranged. In a portable form in which the handle 2 is fixed to the conduit case 4 , the motor case 7 and the battery case 8 are disposed behind the handle 2 . Moreover, the dust collector 12 mentioned later is attached below the motor case part 7. As shown in FIG. The center of gravity of the entire vacuum cleaner main body 1 to which the dust collecting device 12 is attached is close to the handle 2 fixed to the duct housing portion 4, so that it can be easily held even in a portable form. In addition, in this embodiment, the battery case part 8 is arranged behind the motor case part 7, but it is not limited to this, and the battery 18 may be arranged so as to surround the electric blower 17, or may be arranged around the electric blower 17. left and right sides. In addition, below the battery case 8 is provided a main body terminal 9 for charging the battery 18 , which is fitted with the charging stand terminal 28 of the above-mentioned charging stand 6 and conducted so that the battery 18 can be charged.

Around the electric blower 17, there is a fixed case 109 for fixing the electric blower 17. The main body substrate 110 for controlling the cleaner body 1 is fixed on the upper part of the fixed case 109, and a motor case is formed to cover these parts. Part 7. In addition, depending on the arrangement of the battery 18 , the main body substrate 110 may be provided in front of, on the side of, or below the fixed case 109 .

A main body LED 111 is provided above the motor case portion 7 . The main body LED 111 can light up two colors of red and green, and can display the operating state of the vacuum cleaner main body 1 and the charging state of the storage battery 18 . The number of colors of the main body LED 111 can also be 1 color or more than 2 colors, and by combining the lights and lights off, it is also possible to display the charging end state of the battery 18, the operation error state of the electric vacuum cleaner 100, or turn on or turn off the lights as a pattern.

In addition, as shown in FIG. 6 , an exhaust port 106 is provided on a side surface (right side surface in this embodiment) of the motor case 7 , and an exhaust filter (not shown) is provided inside. In this embodiment example, since it is assumed that the user is right-handed, the exhaust port 106 is arranged on the right side of the vacuum cleaner main body 1, thereby preventing the exhaust gas from blowing directly to the user. In addition, the exhaust port 106 can also be provided on the left side to deal with the situation that the user is left-handed, and the exhaust port can also be provided not on one side but on the left and right sides to disperse the air volume of the exhaust gas, thereby suppressing the direct blowing of the exhaust gas. to the user. The exhaust port 106 is preferably formed in a lattice shape along a direction substantially parallel to the longitudinal direction of the cleaner body 1 . When the user uses it as a portable device, the exhaust gas from the electric blower 17 is not directly blown to the user. In addition, when used as a portable device, the main body 1 of the vacuum cleaner may be temporarily placed on the floor or the like, and even if liquid such as water overflows from the front of the main body 1 of the vacuum cleaner by mistake, it is possible to prevent the liquid from entering the motor case. Inside the body 7, failure of the electric blower 17 and the storage battery 18 can be prevented.

Below the motor housing part 7, a suction part 113 communicating with the electric blower 17 and the dust collecting device 12 is provided, and the end surface has an airtight surface 112 for keeping the airtightness between the motor housing part 7 and the dust collecting device 12 . A protective cover 115 is provided in the ventilation flow path of the suction part 113 , and a protective filter (not shown) is provided on the upstream side of the protective cover 115 . The protection filter prevents dust from entering the inside of the electric blower 17 when the dust collector 12 is detached and the operation is performed by mistake. In addition, the protective filter is preferably detachable and made of a water-washable material so that it can be cleaned when it becomes dirty. A part of the protective filter is provided with a notch, and the protective filter is fixed by passing the notch through a protrusion (not shown) provided in the protective cover 115 . The protective cover 115 is preferably in a lattice shape made of holes of a size that cannot be entered by fingers to prevent the user's fingers from touching the electric blower.

On the upstream side of the electric blower 17, there is provided an anti-vibration airtight rubber 116 made of an elastic body sealing member such as rubber. The anti-vibration airtight rubber 116 is in close contact with the flat surface of the outer periphery of the protective cover 115 to ensure airtightness. In addition, the anti-vibration airtight rubber 116 is fixed in the fixed case 109 together with the electric blower 17 , and also functions to absorb rotational vibration generated by driving the electric blower 17 .

＜Dust collector loading and unloading mechanism＞

Hereinafter, the structure of the dust collector attachment-detachment mechanism (D lock button 119) which concerns on embodiment of this invention is demonstrated.

Duct case 4 is provided with dust collector fixing protrusion 117 for fixing dust collector 12 , and motor case 7 is provided with dust collector fixing hole 118 for fixing dust collector 12 . The dust collector 12 is provided with a D lock button 119 biased by a D lock button spring 120 . Insert the dust collecting device fixing protrusion 117 into the recessed part 159 of the bottom surface of the dust collecting device 12, turn the dust collecting device fixing protrusion 117 as a starting point forward (side of the duct housing part 4), and hang the D lock button 119 on the dust collecting device. In the device fixing hole 118, the dust collecting device 12 is installed on the main body 1 of the vacuum cleaner.

When detaching the dust collector 12, the D lock button 119 is slid downward, so that it can be disassembled from the dust collector fixing hole 118, and turned in the opposite direction when the dust collector 12 is installed, so that the dust collector can be fixed from the protrusion. 117 disassembled.

Next, the structure of the dust collector 12 which concerns on embodiment of this invention is demonstrated.

＜Dust collector 12＞

The dust collecting device 12 has a function of separating the dust-containing air sucked in from the mouthpiece body 3 or the suction port 15 into dust and air, and collecting the dust.

Figure 9 shows a front view of the dust collector 12 viewed from the front of the cleaner body 1 (duct housing part 4), and Figure 10 shows an exploded view of the dust collector 12 shown in Figure 11, and Figure 11 shows the dust collector shown in Figure 9. A-A sectional view of the dust device 12.

The dust collecting device 12 generally includes an outer cylinder 128 , an inner cylinder 129 , a dust collection filter 130 , a filter case 131 for accommodating the dust collection filter 130 , an upper cover 132 , and a bottom cover 133 . The inner cylinder 129 and the filter case 131 have an integrated structure, and the upper part of the inner cylinder 129 is provided with the filter case 131 . The outer cylinder 128 is a cylindrical body with upper and lower openings, and a bottom cover 133 is provided at the lower portion of the outer cylinder 128 , and a filter case 131 integrated with the inner cylinder 129 is inserted through the upper opening of the outer cylinder 128 . Then, the dust collection filter 130 is accommodated in the filter case 131, and the upper cover 132 and the upper part of the outer cylinder 129 are fastened and integrated, and the dust collector 12 is formed. At this time, the inner cylinder 129 is attached substantially concentrically with the outer cylinder 128 . When the inner cylinder 129 is attached to the outer cylinder 128, there is a space between the outer cylinder 128 and the inner cylinder 129 for separating and containing dust. In the space formed by the outer cylinder 128 and the inner cylinder 129 , the upper part serves as the dust separating part 134 , and the lower part serves as the dust storage part 135 . The dust separation unit 134 is a space for separating dust from the air carrying the dust, and the dust storage unit 135 is a space for collecting and storing dust.

＜Inner cylinder 129＞

About the inner cylinder 129, it demonstrates using FIG.12, FIG.13, and FIG.14. Fig. 12 is a front view of the inner cylinder 129, Fig. 13 is an exploded view of the inner cylinder 129, and Fig. 14 is a sectional view along line B-B in Fig. 12 .

The upper side of the inner cylinder 129 is constituted by an upper cylinder 129a having an air intake portion 129c, and the lower side is constituted by a lower cylinder 129b having a diameter larger than that of the upper cylinder 129a. An air intake portion 129c is provided on the side surface of 129a of the upper cylinder, and is formed of a grid-shaped frame (frame). In this embodiment example, it is provided as a frame (frame) in the vertical direction, but it may also be in a lattice shape. The air intake portion 129c is provided with a mesh member 136 on its outer peripheral surface, and the mesh member 136 is held by the frame (holder) by covering or insert molding. By providing the mesh member 136 in the air intake portion 129c, the upper cylinder 129a has a filtering function, and the inflow of fine dust into the inner cylinder 129 is suppressed. In the embodiment example, polyester is used for the mesh member 136, but it may also be metal (for example, stainless steel), and instead of a frame (bracket), a plurality of small-diameter through-holes (which can be molded with a mold) may be provided. left and right holes) air intake portion 129c. Unlike the case where the mesh member 136 is erected on the frame (bracket), the through hole is effective for strength and damage of the mesh member 136, and has an advantage that secondary molding is not required. However, since the diameter of the through hole is larger than the mesh of the mesh member 136, in order to prevent fine dust from flowing into the inner cylinder 129, it is preferable to have as small a hole as possible in consideration of the molding machine.

The filter case 131 is provided on the upper side of the upper cylinder 129a as described above. The filter case 131 has a substantially cylindrical shape and is provided concentrically with the upper cylinder 129a. The upper part of the filter case 131 is open, and the lower part has an opening part 131a communicating with the inner space of the upper cylinder 129a at a substantially central part. In this embodiment example, the upper cylinder 129a and the filter case 131 are integrally formed, but a detachable structure may also be used. In addition, a seal 137 is provided at the bottom of the filter case 131 to keep the air between the outer cylinder 128 and the filter case 131 when the filter case 131 is accommodated in the filter case receiving portion 128a of the outer cylinder 128 described later. close contact. In this embodiment example, the seal 137 included in the filter case 131 is provided with a structure (detachable structure) in which a ring-shaped rubber member is attached to the recessed part of the lower part of the filter case 131. When the seal 137 is removed when cleaning the dust collector 12, the filter case 131 and the seal 137 may be integrally formed (secondary molding) in order to prevent forgetting to install the seal 137 .

The lower cylinder 129b of the inner cylinder 129 is provided concentrically with the upper cylinder 129a, and has a substantially cylindrical shape with its upper surface closed. In other words, it has a shape with an open bottom and a space 138 . Moreover, in the space 138 of the lower cylinder 129b, an umbrella 139 that deviates the shape of the lower cylinder 129b in a built-in manner is provided. Out of the barrel 140. The cylindrical body 140 is provided concentrically with the umbrella portion 139 , has a substantially hemispherical shape with the bottom surface 140 a closed, and has a substantially conical shape that tapers toward the bottom surface 140 a. By forming the cylindrical body 140 into a tapered approximately conical shape, which is combined with a thick approximately conical portion at the lower portion of the outer cylinder 128 described later to form an enlarged container shape, it is easy for garbage to fall when it is thrown away. In this cylinder 140, the diameter of the substantially conical portion may be reduced in order to increase the dust collection capacity.

As mentioned above, the umbrella part 139 is built in the lower cylinder 129b, and the slide mechanism which slides up and down is provided, and it becomes easy to discharge dust when throwing away garbage. The umbrella part 139 is accommodated in the lower cylinder 129b except when the garbage is thrown away, such as suction, and slides downward to push out the dust in the dust collector 12 when the garbage is thrown away.

The sliding mechanism is described below. A bottomed cylindrical spring case 141 is provided substantially in the center of the umbrella portion 139 , and the spring case 141 is provided with a spring seat 141 a and a spring shaft 141 b. Accordingly, the outer periphery of the spring case 141 is covered with the cylindrical body 140 . Furthermore, the lower cylinder 129 b is provided with a piston part 142 fitted into the spring case 141 . In order to fix the stopper 143 on the spring shaft 141b, the structure is fastened with the screw 144, and the spring 145 is inserted into the spring case 141 from above, and the nested piston part 142 integrated with the lower cylinder 129b is attached. , the stopper 143 is fastened to the spring shaft 141b with a screw 144 or the like. According to such a structure, the sliding mechanism of the umbrella part 139 is comprised. The stopper 143 slides to the stopper receiving part 129d provided in the upper surface of the lower cylinder 129b. Therefore, as described above, the sliding distance is smaller than the height of the space 138 of the lower cylinder 129b, and the height of the stopper 143 is approximately equal to the sliding distance. In this embodiment example, the spring housing 141 is formed of another member, and the umbrella part 139 is detachable. The fixing of the umbrella part 139 and the spring case 141 is performed by the lock mechanism (not shown) provided in both, and the umbrella part 139 is attached and detached by rotating. In addition, a notch portion 141c is provided on the side surface of the spring case 141, and the notch portion 141c is fitted with a protruding portion (not shown) provided on the piston portion 142 to serve as a stopper when the umbrella portion 139 is attached or detached. By providing such an attachment and detachment structure for the umbrella portion 139, even if dust enters the lower cylinder 129b, the dust can be removed by detaching the umbrella portion 139. In addition, when cleaning the inner cylinder 129, since it can be disassembled, water can be easily removed, and maintenance can be easily performed. In this embodiment example, the umbrella portion 139 and the spring case 141 are provided as separate components, but the umbrella portion 139 and the spring case 141 may be integrally formed. At this time, mold molding can be performed by using the cylindrical body 140 as a separate component.

In this sliding mechanism, the state in which the spring 145 is close to the natural length is the state in which the umbrella portion 139 bulges the most. The vertical sliding distance of the umbrella portion 139 is smaller than the height of the space 138 of the lower cylinder 129b as described above. In other words, the upper surface 139a of the umbrella portion 139 does not go over the bottom surface 129e of the lower cylinder 129b. This is because, by minimizing the gap between the bottom surface 129e of the lower cylinder 129b and the upper surface 139a of the umbrella portion 139 when throwing away garbage, dust is suppressed from being trapped between the bottom surface 129e and the upper surface 139a. In addition, the umbrella part 139 is provided with the necessary minimum clearance which can slide easily in the space 138 in the lower cylinder 129b. It is also considered that since the umbrella portion 139 is located in the dust storage portion 135, if the gap (gap) between the outer periphery of the umbrella portion 139 and the lower cylinder 129b is too small, dust will bite into the gap, making it difficult to slide. In this embodiment example, gaps are provided in consideration of the bite of dust, and a plurality of ribs 139b are provided on the outer periphery of the umbrella portion 139 to reduce rattling during sliding due to the increased gaps. In addition, the umbrella portion 139 is provided with a stepped portion 139d, and in a state where the stepped portion 139d is in contact with the bottom surface 129e of the lower cylinder 129b (the umbrella portion 139 is accommodated in the space 138 of the lower cylinder 129b), the lower cylinder 129b and the lower cylinder 129b are connected to each other. The gap between the umbrella parts 139 disappears. This suppresses dust from entering the gap between the lower cylinder 129b and the inside of the umbrella portion 139 when the dust is sucked. In addition, a flange portion 146 is provided at the bottom of the umbrella portion 139 , and the flange portion 146 suppresses dust from returning from the dust storage portion 135 to the dust separation portion 134 . In addition, since the dust is accumulated below the flange portion 146, it is only necessary to set the time before the dust exceeds the flange portion 146 as the timing of dust discharge.

＜Cover 132＞

As mentioned above, the inner cylinder 129 is accommodated in the outer cylinder 128, and by fixing the outer cylinder 129 and the inner cylinder 128, it becomes the integrated dust collector 12. The outer cylinder 128 and the inner cylinder 129 are fixed by the upper cover 132 . As shown in FIGS. 10 and 11 , the upper cover 132 is a substantially cylindrical body with upper and lower openings, and is smaller than the filter case receiving portion 128 a in a manner covering the upper portion of the outer cylinder 128 described later. The outer diameter of 128a is one circle larger. It has a structure which fixes the upper cover 132 and the filter case receiving part 128a by rotating it from the state which covered the upper cover 132 in the filter case receiving part 128a. In order to cover the upper cover 132 only at a predetermined position on the filter case receiving part 128a, a notch is provided on the inner surface of the upper cover 132, and a protrusion (not shown) is provided on the filter case receiving part 128a. When the upper cover 132 is pushed toward the outer cylinder 128 in a state where the notch is aligned with the protrusion, and the upper cover 132 is rotated, the protrusion enters the space of the notch to fix the upper cover 132 and the outer cylinder 128 .

Moreover, the above-mentioned D lock button 119 is provided in the upper cover 132, and fixation with the cleaner main body 1 is performed.

＜Dust filter 130＞

As shown in FIGS. 10 and 11 , the dust collection filter 130 is formed of a frame and a filter member 147 folded in the frame in a pleated shape. The filter surface of the dust collection filter 130 is preferably substantially horizontal. This is because a force in the direction of gravity acts on the fine dust adhering to the filter member 147, and the dust is easily dropped. In addition, since the filter area is increased by folding the filter member 147 into pleats, the pressure loss caused by the filter member 147 can be reduced. The filter member 147 is, for example, a high-density HEPA filter (High Efficiency Particulate Air Filter). The HEPA filter refers to an air filter that has a particle collection rate of 99.97% or more for particles with a particle size of 0.3 μm at a rated air volume, and has the performance of an initial pressure loss of 245 Pa or less. The dust collection filter 130 is preferably washable by a user. In addition, a sponge filter (not shown) may be provided in front of the dust collection filter 130 . The sponge filter preferably extends the frame of the dust collection filter 130 to the front side and fits it into the frame. In addition, it is preferable that the sponge filter can be washed with water by a user. Thereby, dust collection filter 130 is less likely to be directly polluted by dust, and maintainability improves.

The dust collection filter 130 is housed in a filter case 131 provided on the upper portion of the inner cylinder 129 . Therefore, the dust collection filter 130 is located between the above-mentioned upper cover 132 and the filter housing 131 . In order to pass all the air passing through the mesh member 136 of the inner tube 129 through the dust collection filter 130 , it is necessary to press the dust collection filter 130 between the upper cover 132 and the filter case 131 . Therefore, the outer periphery of the dust collection filter 130 is equipped with the packing 148 for keeping the upper cover 132 and the filter case 131 airtight. The packing 148 is molded with a rubber member etc. on the upper and lower surfaces of the flange-shaped flange part 130a provided in the outer periphery of the dust collection filter 130. As shown in FIG. When dust collection filter 130 is attached to filter case 131 , the lower surface side of packing 148 comes into contact with flange portion 131 a at the top of filter case 131 . The upper part of the upper cover 132 is provided with an airtight surface 132a. As mentioned above, if the upper cover 132 is covered from above the dust collection filter 130, the upper surface side of the sealing member 148 contacts the airtight surface 132b, and by fixing the upper cover 132, the dust collection filter 130 is crimped between the upper cover 132 and the filter housing 131. At this time, as described above, it is crimped so that airtightness can also be maintained between the packing 137 provided at the lower portion of the filter case 131 and the outer cylinder 128 .

Moreover, the upper surface of the dust collection filter 130 is equipped with the packing 130b for keeping airtight. The sealing member 130b is provided to protrude above the top surface of the upper cover 132 . When the dust collector 12 is mounted on the cleaner body 1, the seal 130b keeps the cleaner body 1 and the dust collector 12 airtight.

＜Outer cylinder 128＞

The outer cylinder 128 will be described using FIGS. 15 to 18 . Fig. 15 is a front view of a state in which the bottom cover 133 of the outer cylinder 128 has been opened, Fig. 16 is a right side view of a state in which the bottom cover 133 of the outer cylinder 128 has been opened, Fig. 17 is a sectional view of C-C in Fig. 16 , and Fig. 21 is a diagram Section D-D in 19.

The outer cylinder 128 is a substantially cylindrical body with upper and lower openings, and a filter case receiving portion 128 a that is slightly larger than the outer diameter of the filter case 131 is provided on the upper portion so as to house the filter case 131 . The filter case receiving part 128a is equipped with the flange part 128b which protrudes outside and inside. The outer side of the flange portion 128b is in contact with the bottom surface of the above-mentioned upper cover 132 , and the outer diameter of the flange portion 128b is substantially equal to the outer diameter of the upper cover 132 . In addition, in the filter receiving part 128a, details are omitted, but a notch is provided so as to avoid cutting out the size of the protrusion provided on the outer periphery of the filter case 132 . Positioning of the inner cylinder 129 inserted into the outer cylinder 128 is performed by aligning the position of the notch with the protrusion of the filter case 132 . The height of the filter receiving part 128a is larger than the above-mentioned sliding distance of the inner cylinder 129 . This is the height at which the filter case 131 is accommodated in the filter case receiving portion 128a when the inner cylinder 129 is attached in a state where the bottom cover 133 described later is closed (the state where the umbrella portion 139 protrudes). If the body 131 exceeds this height, the inner cylinder 129 is unstable and difficult to install. The inner diameter of the flange portion 128b is smaller than the outer diameter of the seal 137 provided at the lower portion of the filter case 131, and when the filter case 131 is fixed, the seal 137 is crimped on the upper portion of the flange portion 128b to maintain airtightness.

A bottom cover 133 is provided so as to be openable and closable at the opening on the opposite side (the lower portion of the outer cylinder 128 ) of the filter case receiving portion 128 a. The shape of the bottom cover 133 will be described in detail later.

An inlet 149 and a lid lock mechanism 150 are provided on the side surface of the outer cylinder 128 . As shown in the D-D sectional view of FIG. 18 , the inflow port 149 is provided on a plane (LO) parallel to the center line (I), and the inflow port outer wall surface 149 a is located on the outer side than the outer diameter of the outer cylinder 128, and is formed in a substantially The tangent is connected to the outer cylinder 128 . The opening of the inflow port 149 has a substantially quadrangular shape. Therefore, the inlet outer wall surface 149a is parallel to the centerline (HA). In other words, the inflow port 149 protrudes further outward than the outer diameter of the outer cylinder 128 . This is because the inner cylinder 129 provided concentrically with the outer cylinder 128 and the inlet 149 do not overlap when viewed from the surface of the inlet 149 . When the surface from the inflow port 149 can face the inner cylinder 129 , the inflowing air containing dust collides with the inner cylinder 129 , and the dust separation performance decreases. In addition, since the side surface of the inner cylinder 129 has a filter structure over which the mesh member 136 is straddled, problems such as dust adhering to the mesh member 136 may occur, and the suction force may decrease. In addition, the arrangement of the inflow ports 149 as in the present embodiment is also effective in reducing pressure loss and noise. If the inflow port 149 with the same opening area as in the present embodiment is accommodated in the outer diameter of the outer cylinder 128, the inflow port 149 can face the inner cylinder 129, so the above-mentioned disadvantage occurs. Therefore, the width direction of the inflow port 149 needs to be reduced, and the flow velocity increases to increase the pressure loss and noise. In order to avoid pressure loss and noise increase, it is also conceivable to change the aspect ratio of the inflow port 149, and set the inflow port 149 that is longer in the up and down direction to ensure the opening area, but if the opening of the inflow port 149 is longer in the up and down direction, then Since the vertical direction of the outer cylinder 128 becomes long, the dust collector 12 becomes large. This embodiment example is a stick-type and portable vacuum cleaner, and a compact vacuum cleaner main body 1 is required, and the dust collector 12 also needs to be compact. Therefore, according to the dust collector 12 of the present embodiment, it is possible to provide the electric vacuum cleaner 100 in which the vacuum cleaner main body 1 is compacted.

In addition, as described above, the inlet 149 is provided with an opening on a plane (LO plane) parallel to the centerline (I) shown in the D-D sectional view of FIG. 18 . Furthermore, the surface (LO surface) having the opening of the inflow port 149 is located on the inside (centerline (I) side) of the outer diameter of the outer cylinder 128 . An introduction tube 160 to be described later is connected to the outer cylinder 128 so that the fluid can flow through it. Therefore, by setting the surface (LO surface) of the inflow port 149 to be smaller than the maximum outer diameter of the outer cylinder 128 (LO surface), it is possible to The front-back height of the cleaner main body 1 including the introduction pipe 160 is reduced. In other words, by disposing the introduction pipe 160 not on the same line as the center axis (HA) of the outer cylinder 128 but offsetting it, it is possible to provide the electric vacuum cleaner 100 in which the vacuum cleaner main body 1 is compacted.

In addition, in this embodiment example, the inlet 149 is provided on the right side, but it may be provided on the left side, and the swirling direction of the inflowing air is reversed, but it is not necessary to consider the influence on the dust separation performance and the like.

As shown in the C-C cross section of FIG. 17 , the upper part of the outer cylinder 128 of this embodiment has a cylindrical shape. In addition, as shown surrounded by a dotted line 190 in the figure, a dust return prevention surface 151 is provided approximately horizontally on the outside in the approximately vertical direction relative to the central axis of the dust collector 12 from the approximately central portion. The lower part of 151 has a substantially conically enlarged shape. The dust reentry prevention surface 151 expands from the cylindrical inner peripheral surface of the upper part of the outer cylinder 128 to the outer diameter side by about 2.5 mm. In the state where the inner cylinder 129 is installed on the outer cylinder 128, the lower surface of the umbrella portion 139 of the inner cylinder 129 is located in the cylinder above the outer cylinder 128, and dust is deposited on the lower surface of the umbrella portion 139 of the inner cylinder 129 (below the flange portion 146). ). Thus, the dust accumulated in the dust container 135 below and the dust contained in the air returning from the dust container 135 are prevented from returning along the inner surface of the outer cylinder 128 by the dust return prevention surface 151 . Therefore, dust can be suppressed from adhering to the mesh member 136 on the side of the inner tube 128 and fine dust can be blown off from the mesh member 136 , so that it is possible to provide the electric vacuum cleaner 100 having the dust collector 12 that suppresses a decrease in suction force.

In addition, the dust return prevention surface 151 is provided, and the downward direction from the dust return prevention surface 151 is formed into a substantially conical shape, so that the volume of the outer cylinder 128 can be enlarged, and more dust can be accumulated. In this embodiment example, the center axis|shaft of the dust collector 12 is inclined about 8 degree|times in the state which made the vertical direction.

17, as shown in the sectional view shown in FIG. The annular rib 152 extends the upper cylindrical portion and protrudes inward in a substantially conical shape, and can further prevent dust from returning along the inner wall of the outer cylinder 128 .

Moreover, the part enclosed by the dotted line 190 in FIG. 17 may also have a cylindrical shape as shown in the cross-sectional view shown in FIG. An inclined dust reentry prevention surface 151 is provided at an upper position, and the downward direction from the dust reentry prevention surface 151 expands in a substantially conical shape. By providing such an inclined dust returning prevention surface 151, it is possible to suppress dust from adhering to the mesh member 136 on the side of the inner tube 129, and to blow off fine dust from the mesh member 136, so that a reduction in suction force can be provided. The electric vacuum cleaner 100 of the dust collecting device 12 .

In addition, the electric vacuum cleaner 100 of this embodiment example is a stick type and a portable dual-purpose structure. In a portable state, the posture of the vacuum cleaner main body 1 is various, and sometimes the upper part of the dust collector 12 (the dust collection filter 130 side) )down. At this time, by providing the dust returning prevention surface 151 as described above, the return of dust from the dust containing part 135 to the dust separating part 134 is effectively suppressed.

In this embodiment example, the dust collector 12 of the stick-type and portable dual-purpose electric vacuum cleaner 100 has been described, but in the cyclone cleaner of the floor moving type, by providing the above-mentioned dust returning prevention surface 151, Since the return of dust from the dust container 135 to the dust separator 134 can also be suppressed, it is effective in blowing off the fine dust or compressing the dust.

<Lid lock mechanism 150>

The lid lock mechanism 150 provided on the side surface of the outer cylinder 128 is composed of a lid lock cover 153 , a button 154 , and a spring (not shown). The details are omitted. The button 154 is biased by a spring. By pressing the button 154, the claw 155 integrated with the button 154 rotates, and the claw 155 of the button 154 is disengaged from the hooking part 156 provided on the bottom cover 133, and the bottom cover 133 is opened. . A slope (not shown) is formed on the claw portion 155 and the hook portion 156. The action of closing the bottom cover 133 makes the slopes contact each other, and by pushing up the bottom cover 133, the button 154 receives a rotational force and the spring contracts, and the claw The portion 155 passes over the hook portion 156 to close the bottom cover 133 again.

＜Bottom cover 133＞

The bottom cover 133 has a deep disk shape, and has a seal 157 on the outer periphery of the upper surface. When the bottom cover 133 is closed, it can maintain airtightness with the bottom of the outer cylinder 128 . The bottom cover 133 is formed in a disc shape, increasing strength. In addition, a hook portion 156 for locking the above-mentioned outer cylinder 128 and bottom cover 133 is provided on a part of the outer periphery, and a hinge portion 158 having a rotation shaft 158 a is provided on the opposite surface.

On the bottom surface (back surface) of the bottom cover 133, a recessed portion 159 is provided on the duct housing portion 4 side of the cleaner main body 1, and the dust collector fixing protrusion 117 of the cleaner main body 1 is fitted into the recessed portion 159 on the bottom surface of the bottom cover 133. shape. As mentioned above, when the dust collector 12 is installed on the cleaner main body 1, the recessed portion 159 on the bottom surface of the bottom cover 133 is fitted with the dust collector fixing protrusion 117 of the cleaner main body 1, and the dust collector 12 is moved from the protrusion to the bottom of the cleaner main body 1. Push the vacuum cleaner body 1 side. Then, the dust collecting device 12 is integrated with the vacuum cleaner main body 1 by using the D lock button 119 on the upper part of the upper cover 132 . Therefore, when the dust collector 12 is attached to the cleaner body 1, the cover lock mechanism 150 is hidden on the cleaner body 1 side. This is because, when the lid lock mechanism 150 is provided on the opposite side (outside), it is possible to release the lid lock mechanism 150 during cleaning, and it is used to prevent malfunction. For example, when cleaning under a sofa or a bed in a stick-type state, the cleaner main body 1 may be brought horizontally close to the floor surface. However, the lid lock mechanism 150 may be released. The positions of the cover lock mechanism 150 and the hinge portion 158 are not limited thereto, and may be provided on the left and right with respect to the cleaner main body 1 . By providing on the left and right, the above-mentioned malfunction can be prevented, and since the hinge part 158 does not protrude, the height of the front-back direction of the cleaner main body 1 can be made small, and compactness can be achieved.

In addition, the center of the disk-shaped bottom cover 133 is provided with a recessed portion 170 recessed from the projected portion. In addition, the recessed portion 170 is larger than the spherical radius of the spherical shape of the bottom surface 140a of the above-mentioned cylindrical body 140, and the depth of the recessed portion 170 is set to be recessed under the state (perpendicular to the bottom surface of the outer cylinder 128) with the bottom cover 133 opened. The portion 170 does not form a horizontal plane. In addition, the recessed portion 170 is made as shallow as possible so that dust does not remain in the recessed portion 170 when garbage is discharged.

In this embodiment example, the recessed portion 170 is formed separately. In order to reduce the wear of the parts caused by the friction with the cylinder 140 when the bottom cover 133 is opened and closed, materials such as POM (polyoxymethylene) are used, but it can also be integrated. take shape.

In the structure of the outer cylinder 128 and the inner cylinder 129 as described above, by attaching the inner cylinder 129 to the outer cylinder 128 , the sliding mechanism provided on the inner cylinder 129 is performed by opening and closing the bottom cover 133 provided on the lower part of the outer cylinder 128 . When the bottom cover 133 is opened, the umbrella part 139 protrudes downward, and when the bottom cover 133 is closed, the spring 145 contracts, and the umbrella part 139 is accommodated in the lower cylinder 129b. Therefore, when the cover lock mechanism 150 of the bottom cover 133 is released when throwing away the garbage, the umbrella part 139 bulges downward to push out the dust.

＜Movement when throwing out garbage＞

In the outer cylinder 128, the inner cylinder 129, and the slide mechanism for discharging garbage as described above, the operation at the time of throwing away garbage will be described with reference to FIGS. 21 and 22 . FIG. 21 shows a sectional view of E-E shown in FIG. 11 in a state where the bottom cover 133 is closed, and FIG. 22 shows after the garbage is discharged in FIG. 21 (the state where the bottom cover 133 is opened).

The bottom cover 133 is released by pressing the button 154 of the cover lock mechanism 150 provided on the side surface of the dust collector 12 . Bottom cover 133 has hinge portion 158 on the opposite side of cover lock mechanism 150 , and rotates about rotation shaft 158 a of hinge portion 158 so that bottom cover 133 is substantially vertical (upper surface of bottom cover 133 is vertical).

When the bottom cover 133 is opened, the umbrella part 139 and the barrel 140 bulge downward by the spring 145 . Accordingly, when the bottom cover 133 is opened, the umbrella portion 139 is positioned closer to the opening of the lower surface of the outer cylinder 128 than when the bottom cover 133 is closed. The collected dust is pushed downward by the sliding of the umbrella portion 139 .

After throwing away the garbage, when the bottom cover 133 is closed, the bottom surface 140a of the cylindrical body 140 bulging downward comes into contact with the recessed part 170 provided in the center of the bottom cover 133, and the umbrella part 139 and the cylindrical body 140 are pushed upward. . The bottom surface 140a of the cylindrical body 140 is in spherical contact with the recessed portion 170, so even if the angle of the bottom cover 133 changes due to the action of closing the bottom cover 133, the contact area between the bottom surface 140a of the cylindrical body 140 and the recessed portion 170 can be kept constant. In addition, since the curved surfaces are brought into contact with each other, force is always applied in the vertical direction, so the umbrella portion 139 is smoothly accommodated in the lower cylinder 129b. When the bottom cover 133 is in contact with a plane without the recess 170 , the direction of the force is perpendicular to the plane, so it is difficult for the umbrella part 139 to return to the vertical direction, and the bottom cover 133 is difficult to close. Then, when the bottom cover 133 is closed to a substantially horizontal state, the hook portion 156 contacts the claw portion 155 and is locked while being kept airtight by the packing 157 provided on the bottom cover 133 .

In addition, having such a mechanism for discharging dust from below the dust collector 12 is effective for the electric vacuum cleaner 100 (rechargeable electric vacuum cleaner) provided with the main body terminal portion 9 above the dust collector 12 as in this embodiment, and can suppress dust. Adhering to the upper part of the dust collector 12 (on the side of the upper cover 132 ), it is possible to prevent dust from adhering to the main body terminal portion 9 , which is very safe.

Hereinafter, the shape and structure of the introduction pipe 160 which is the upstream side of the dust collector 12 and introduces the air containing dust into the dust collector 12, and the flow of air are demonstrated.

<Introduction tube 160>

The stick-type, portable dual-purpose electric vacuum cleaner 100 of this embodiment is provided with an introduction pipe 160, and the introduction pipe 160 is from the suction port 15 at the front end of the vacuum cleaner main body 1 to the inflow port 149 of the dust collector 12 (outer cylinder 128). flow path. FIG. 23 is a diagram showing only the introduction pipe 160 and the dust collector 12 , omitting components from a state where the dust collector 12 is attached to the cleaner main body 1 shown in FIG. 5 . FIG. 24 is a front view of FIG. 23 , and FIG. 25 is a cross-sectional view along line F-F shown in FIG. 24 .

The introduction pipe 160 is opened up and down, and has the above-mentioned suction port 15 below, and an introduction pipe outlet 161 connected to the inlet 149 of the dust collector 12 (outer cylinder 128 ) in a fluid manner above. The suction port 15 below is connected to the suction body 3 and the like.

In addition, the introduction pipe 160 is provided on the side surface of the dust collector 12 . The central axis (NI) of the dust collector 12 shown in FIG. 24 and the central axis (not shown) of the cleaner main body 1 are located on the same line (substantially parallel) when viewed from above. In addition, as described above, the dust collector 12 is attached to the rear of the cleaner main body 1 . The central axis (HO) of the linear part (linear piping 160a) of the introduction pipe 160 is substantially parallel to the central axis (NI) of the dust collector 12 . The straight pipe 160 a of the introduction pipe 160 has a length from the inlet 149 of the outer cylinder 128 to the bottom of the outer cylinder 128 , and in order to avoid the bottom cover 133 , it is bent toward the center of the bottom cover 133 and then directed downward. Extended straight piping 160b. The central axis (HE) of the linear piping 160b and the central axis (NI) of the dust collector 12 are located on the same line as seen from above. In other words, the introduction pipe 160 has a pipe shape in which the central axis of the straight pipe 160a is substantially parallel to the central axis (HE axis) of the straight pipe 160b included in the suction port 102 and connects the two straight pipes obliquely downward. The inclination angle of the inclined pipe 160c connecting the two straight pipes in an oblique downward direction varies depending on the position of the suction port 15, and the position (range) of the suction port 15 is formed within the bottom surface of the dust collector 12 (inside the outer diameter of the bottom cover 133) shape. In addition, the introduction pipe 160 is accommodated in the introduction pipe housing portion 14 of the cleaner main body 1, and the introduction pipe housing portion 14 has a shape that bulges toward the left side of the duct housing portion 4 when viewed from the front (right side shown in FIG. 1 ). ).

The inlet pipe outlet 161 connected to the inlet 149 of the dust collector 12 is provided with a seal 162 , and when the dust collector 12 is attached to the cleaner body 1 , the seal 162 and the inlet 149 are crimped to maintain airtightness. The sealing member 162 is molded integrally with the introduction tube outlet 161 (secondary molding) using a rubber member, a non-breathable spongy member, or an elastic material, or formed between the introduction tube outlet 161 and the introduction tube housing. Parts 14 are interposed and fixed to form an airtight structure between the introduction tube outlet 161 and the packing 162 . In addition, the seal 162 may not be provided at the inlet pipe outlet 161, but may be provided at the inlet 149 of the dust collector 12. Since there is a possibility of forgetting to install the sealing member 162 etc., it is preferable to install it at the introduction tube outlet 161 as described above.

FIG. 24 , FIG. 25 , and FIG. 26 show the flow of air containing dust caused by bending the introduction pipe 160 as in this embodiment example. 170 shown in the figure is dust, and the flow of air is represented by arrow A. The air sucked in from the suction port 15 flows as indicated by arrow A along the shape of the introduction pipe 160 . At this time, the dust 170 , which is denser and heavier than air, is pushed to the right side of the inner wall surface of the straight pipe 160a by the inertial force 180 through the inclined pipe 160c, and is transported to the dust collector 12 along the right side of the inner wall surface. . The right side of the inner wall surface of the linear pipe 160 a is connected to the right side of the inner wall surface of the inlet 149 provided in the outer cylinder 128 , and thus is connected to the inner wall surface of the outer cylinder 128 in a substantially tangential direction. Therefore, the dust 170 conveyed along the right side of the inner wall surface of the linear pipe 160a swirls near the inner wall surface of the outer cylinder 128 that is farthest from the outer diameter side of the dust separation unit 134, that is, the outer periphery of the inner cylinder 129, thereby improving the centrifugal separation performance. 25 or 26 as seen from the side of the suction port 15 (below), since the linear piping 160a is positioned in front of the linear piping 160b having the suction port 15, it is the same as the flow described above. Since the dust 170 is conveyed toward the front side of the inner wall of the linear pipe 160 a by the inertial force 180 , the dust 170 is conveyed from above the inlet 149 provided in the outer cylinder 128 . Thereby, since the height direction of the inflow port 149 can be used effectively, the height of the dust separation part 134 can be used effectively. The higher the dust separation part 134 is (the longer it is in the vertical direction), the higher the centrifugal separation performance of dust is. Thus, by adopting the curved introduction pipe 160 as in the present embodiment, it is possible to provide the electric vacuum cleaner 100 having the dust collector 12 which suppresses the height of the dust separation part 134 (compactness) and ensures centrifugal separation performance.

In addition, providing a bent portion on the introduction pipe 160 also contributes to the compactness of the cleaner main body 1 . For example, in the stick type, when cleaning the sofa or the bottom of the bed, the vacuum cleaner main body 1 is brought close to the floor surface, and the suction body 3 is inserted into the upper and lower narrow gaps. At this time, as shown in Japanese Patent Application Laid-Open No. 2002-85297, for example, if the introduction pipe 160 is straightly extended, the dust collector 12 will collide with the bed, so the cleaner main body 1 cannot be brought closer to the floor unless the introduction pipe 160 is lengthened. noodle. Therefore, by bending the introduction pipe 160 as in the present embodiment, the front-rear length of the cleaner main body 1 can be shortened, and a compact electric vacuum cleaner 100 can be provided. As a method of shortening the front and rear length of the vacuum cleaner main body 1, by reducing the diameter of the dust collector 12, the introduction pipe 160 can be kept close to the floor surface without excessive elongation, but if the diameter of the dust collector 12 is reduced, the dust Separation performance, reduction in dust collection capacity, and pressure loss may also deteriorate. By bending the introduction pipe 160 as in the present embodiment, it is possible to provide the dust collector 12 with improved dust separation performance, a large amount of collected dust, and a low pressure loss, and a compact electric vacuum cleaner 100 can be provided.

In addition, even if the introduction pipe 160 is a shape extending straight, if the dust collector 12 is installed in front of the vacuum cleaner main body 1 (behind the front of the duct housing part 4) unlike the electric vacuum cleaner 100 of the present embodiment, then The above-mentioned vacuum cleaner main body 1 can be brought close to the floor surface, and the action of inserting the nozzle body 3 in a narrow gap can be performed (refer to Japanese Patent Application Laid-Open No. 2004-24887). However, if the dust collector 12 is installed in front of the cleaner main body 1, the inlet 149 of the dust collector 12 faces rearward. Therefore, when the cleaner main body 1 is placed close to the floor surface for cleaning or in a portable state, the dust collector main body 1 During cleaning with the upper part of the dust collector 12 (the side of the dust collection filter 130 ) facing down, dust may remain in the introduction pipe 160 when the operation is stopped. In order to solve this problem, it is conceivable to provide a check valve at the inflow port 149, but there is a possibility that an increase in pressure loss due to the check valve, dust being caught in the check valve, and the like may occur. Therefore, as in the present embodiment, the dust collecting device 12 is provided behind the cleaner main body 1, and the introduction pipe 160 is bent, so that even in various cleaning postures, it is difficult for dust to remain on the inlet 149 side. Therefore, it is possible to suppress an increase in pressure loss due to the installation of the check valve, etc., and to prevent dust from being caught in the check valve, etc., and it is possible to provide the compact electric vacuum cleaner 100 .

In addition, as described above, when the cleaner main body 1 is viewed from the front, the inlet pipe housing part 14 has a shape that bulges toward the left side of the duct housing part 4 (in FIG. 1 etc., it is the right side of the duct housing part). . Fig. 27 shows a G-G sectional view of the cleaner body 1 shown in Fig. 6 . As shown in the figure, the central axis of the dust collector 12 and the cleaner body 1 is substantially parallel (on the same line), and the axis of the linear pipe 160a of the introduction pipe 160 is not located on the same line of both axes. In this way, by displacing the introduction pipe 160 in the left-right direction from the cleaner body 1 (dust collector 12 ) and arranging it horizontally asymmetrically (asymmetrically), the cleaner body 1 is less likely to collide with the user's body. Fig. 29 and Fig. 30 show views of electric vacuum cleaner 100 seen from the front. FIG. 29 shows the electric vacuum cleaner 100 in a state where the telescopic duct 5 is extended and the handle 2 is not turned. FIG. 30 shows electric vacuum cleaner 100 in a state where telescoping duct 5 is retracted and handle 2 is turned. Moreover, the weight reduction of the vacuum cleaner main body 1 based on the weight reduction of the case main body 50 can be achieved by making the introduction pipe case part 14 in the case main body 50 into the shape of the introduction pipe 160 . Thereby, the external appearance of the cleaner main body 1 can be made small compared with the symmetrical external appearance. In other words, when the cleaner main body 1 is viewed from the front, the housing main body 50 bulges to the left by an amount equivalent to the inlet pipe housing portion 14, and the housing main body 50 has a left-right asymmetrical (asymmetrical) shape. That is, the vacuum cleaner 100 as a whole also has a left-right asymmetrical (asymmetrical) shape.

Moreover, when the introduction pipe 160 is arranged on the left side as viewed from the front as in the present embodiment, there are few protruding parts on the left side of the cleaner main body 1, so it is easy for right-handed users to use it. In some cases, left-handed users are easy to use. Switching between the right side and the left side only needs to replace the outer cylinder 128, the introduction pipe 160, and the introduction pipe housing part 14, so it is possible to provide the electric vacuum cleaner 100 that realizes a common pattern with fewer replacement parts.

＜Flow of air when attracting garbage＞

The flow of air in the state where the dust collector 12 combining the outer cylinder 128, the inner cylinder 129, the dust filter 130, the upper cover 132, and the bottom cover 133 as described above is attached to the vacuum cleaner body 1 will be described with reference to FIG. 28. . FIG. 28 shows the flow of air in the portable state, and it is the same in the state of the stick type, so the air flow of the stick type is omitted.

The operation is started by the user using the operation button 11b provided on the handle 2, and the electric blower 17 is driven to suck in air. The sucked air flows into the dust collector 12 from the inlet 149 through the inlet 15 of the inlet 160 through the outlet 161 of the inlet (flow 200 ). At this time, the dust is conveyed in the dust collector 12 from the substantially tangential direction of the outer cylinder 128 while being pushed to the left side of the inner wall surface of the introduction pipe 160 by the bent portion of the introduction pipe 160 . The inflowing air containing dust becomes a swirling flow, and a centrifugal force acts on the dust to separate the dust from the air (flow 201 ). That is, dust and air are separated by the dust separation unit 134 . Most of the separated air flows into the inner cylinder 129 from the air inlet 129c provided in the upper cylinder 129a (flow 202). Then, the air passes through the dust collection filter 130, passes through the upper opening of the upper cover 132, and reaches the electric blower 17 (flow 203). At this time, the fine dust passing through the mesh member 136 of the air inlet 129c is collected by the dust collection filter 130 .

On the other hand, the dust separated by the centrifugal force passes between the outer cylinder 128 and the lower cylinder 129 b by gravity and a part of the air flow, and is conveyed into the dust container 135 . At this time, since centrifugal force acts on the dust, it swirls in the dust container 135 (flow 204 ). Then, if the vacuum cleaner continues to be used, the dust gradually accumulates and the state where the dust container 135 is full becomes the time to throw out the garbage. The air flowing into the dust container 135 flows from the vicinity of the outer periphery of the lower cylinder 129b to the side of the upper cylinder 129a along the shape of the cylindrical body 140 and the space 139a of the umbrella 139 (flow 205 ). In order to suppress the return of dust to the upper cylinder 129a side due to the flow of the air, it is necessary for the umbrella portion 139 to have a depth. In this embodiment example, the lower cylinder 129b is provided with a sliding mechanism for pushing out dust, so the umbrella part 139 is provided with a sufficient depth. In addition, the return of dust to the upper cylinder 129 a side is further suppressed by the dust return prevention surface 151 provided at the upper end of the tapered portion of the outer cylinder 128 .

After the dust container 135 is filled with dust, throw away the garbage. The garbage discharge mechanism is as described above. to expel the dust.

As described above, according to the electric vacuum cleaner which can be used as a stick type or a portable vacuum cleaner and is equipped with a cyclone-type dust collector capable of maintaining suction as in this embodiment example, it is possible to provide an easy-to-use vacuum cleaner that has both small size, light weight, and strength of suction. electric vacuum cleaner.

Claims (5)

1. a kind of electric dust collector, which is characterized in that

With main body of dust collector, which has electric blower, suction inlet and dust collect plant,

Above-mentioned dust collect plant has substantially cylindric outer barrel and is built in the substantially cylindric inner cylinder of the outer barrel,

The inner cylinder is configured with above-mentioned outer barrel substantially concentric circles, and above-mentioned outer barrel has inflow entrance in side, the inflow entrance with lead Enter one end connection of pipe, which is built in above-mentioned main body of dust collector and both ends open, the other end tool of the ingress pipe Standby above-mentioned suction inlet,

Above-mentioned ingress pipe is located at the side of above-mentioned dust collect plant,

Above-mentioned ingress pipe has bending section, and above-mentioned bending section has the extension vertically extended, the center of the extension The central shaft of axis and above-mentioned dust collect plant is arranged substantially in parallel, and the top of above-mentioned extension is configured in the side of above-mentioned dust collect plant Portion, the lower section of above-mentioned extension and the central shaft of above-mentioned dust collect plant are located on coaxial, and above-mentioned suction inlet is set to above-mentioned lead Enter between pipe and above-mentioned dust collect plant.

2. electric dust collector according to claim 1, which is characterized in that

Above-mentioned dust collect plant can be loaded and unloaded from above-mentioned main body of dust collector.

3. a kind of electric dust collector, has：Has the main body of dust collector of electric blower, suction inlet and dust collect plant；And even The ingress pipe of logical above-mentioned dust collect plant and above-mentioned suction inlet, which is characterized in that

Above-mentioned main body of dust collector has the dust collect plant support portion that above-mentioned dust collect plant is supported in rear, above-mentioned ingress pipe configuration In the side of above-mentioned dust collect plant, have the housing body for covering above-mentioned dust collect plant support portion and above-mentioned ingress pipe,

Above-mentioned ingress pipe has bending section, and above-mentioned bending section has the extension vertically extended, the center of the extension The central shaft of axis and above-mentioned dust collect plant is arranged substantially in parallel, and the top of above-mentioned extension is configured in the side of above-mentioned dust collect plant Portion, the lower section of above-mentioned extension and the central shaft of above-mentioned dust collect plant are located on coaxial, and above-mentioned suction inlet is set to above-mentioned lead Enter between pipe and above-mentioned dust collect plant.

4. a kind of electric dust collector, has main body of dust collector, which has electric blower, suction inlet and dust dress Set, above-mentioned dust collect plant has substantially cylindric outer barrel and is built in the substantially cylindric inner cylinder of the outer barrel, the inner cylinder with Above-mentioned outer barrel substantially concentric circles it is arranged, which has inflow entrance in side, and above-mentioned electric dust collector, which has, is connected to the stream The ingress pipe of entrance and above-mentioned suction inlet,

Above-mentioned electric dust collector is characterized in that,

Above-mentioned main body of dust collector has the dust collect plant support portion that above-mentioned dust collect plant is supported in rear, and above-mentioned ingress pipe is located at The side of above-mentioned dust collect plant has the housing body for covering above-mentioned dust collect plant support portion and above-mentioned ingress pipe,

Above-mentioned ingress pipe has bending section, and above-mentioned bending section has the extension vertically extended, the center of the extension The central shaft of axis and above-mentioned dust collect plant is arranged substantially in parallel, and the top of above-mentioned extension is configured in the side of above-mentioned dust collect plant Portion, the lower section of above-mentioned extension and the central shaft of above-mentioned dust collect plant are located on coaxial, and above-mentioned suction inlet is set to above-mentioned lead Enter between pipe and above-mentioned dust collect plant.

5. electric dust collector according to claim 3 or 4, which is characterized in that

Above-mentioned dust collect plant can be loaded and unloaded from above-mentioned main body of dust collector.