JP6715569B2 - Vacuum cleaner - Google Patents

Description

The present invention relates to a vacuum cleaner.

In recent years, the form of the electric vacuum cleaner has diversified, and in addition to conventional floor moving type vacuum cleaners and vertical vacuum cleaners, self-supporting traveling vacuum cleaners and vacuum cleaners dedicated to futon cleaning, both vertical (stick type) and handy type can be used. There are various vacuum cleaners. Among them, the stick type and handy type vacuum cleaners are generally called DC stick vacuum cleaners, and many of them are equipped with a storage battery such as a nickel hydrogen battery or a lithium ion battery.

In such a DC stick cleaner, the electric blower is driven by the storage battery, the dust-containing air sucked from the suction body is guided to the cleaner body, and the dust is collected through the dust collector in the cleaner body to be cleaned. The air is exhausted outside the cleaner body. Then, a compact case including an electric blower, a dust collector, and a storage battery is treated as a cleaner body (handy type), and is attached to a stick body that is an outer shell that accommodates the case, and is used as a stick type. Is well known.

Japanese Unexamined Patent Application Publication No. 2012-228360 (Patent Document 1) discloses an electric vacuum cleaner in which the above-described vacuum cleaner body can be separated and used as a handy type. It is described that almost half and an upper side of almost half of the corresponding back surface part are opened to accommodate the cleaner body detachably.

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

In order to solve this problem, the inventions described in Patent Documents 2 to 4 below are known as conventional techniques.

Japanese Patent No. 5222375 (Patent Document 2) separates a wand from a portable cleaner so that the portable cleaner can be used as a portable cleaner rather than as part of a stick vacuum cleaner. A vacuum cleaner that can do this is described.

In Japanese Patent Laid-Open No. 2002-85297 (Patent Document 3), a dust collection case having a filter body attached in front of an electric blower built in the main body engages with a locking portion of the main body at an engaging portion at one end, There is described an electric vacuum cleaner in which a buckle provided at the other end is engaged with a recess of a main body and a dust collection case is detachably locked.

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

JP2012-228360A Japanese Patent No. 5222375 JP, 2002-85297, A JP, 2004-24887, A

When using a DC stick cleaner in a general home, a compact and convenient form is preferable. Further, when a cyclone type dust collecting device capable of relatively maintaining suction power is provided, a dust collecting device having a high dust separation performance for centrifugally separating air and dust is required. Furthermore, since a small and lightweight electric blower is mounted, the suction force is generally inferior to that of a floor-moving type electric vacuum cleaner. Therefore, the smaller the pressure loss of the dust collector, the better. Summarizing these required performances, in a DC stick cleaner equipped with a cyclone-type dust collector that can maintain suction power, a product that is compact and lightweight and that can maintain the strength of suction power is desirable.

Since the electric vacuum cleaner described in Patent Document 1 is an electric vacuum cleaner in which the main body of the vacuum cleaner is separated and used as a handy type, as described above, reduction in size and weight is an issue. In addition, since the dust collector is not a cyclone type, when much dust is collected in the dust collector, the suction force is reduced.

The vacuum cleaner described in Patent Document 2 can maintain the suction force by including a cyclone type dust collecting device, but since the central axis of the wand (pipe) and the central axis of the dust collecting device are perpendicular to each other. When cleaning with a stick type, it is difficult to approach the floor surface when the vacuum cleaner body is close to the floor surface such as under the bed or sofa because the dust collector is large in the vertical direction. Although it is conceivable to reduce the height of the dust collector, this is not preferable because the amount of dust that can be sucked decreases.

The vacuum cleaner described in Patent Document 3 is arranged so that the central axis of the extension pipe and the central axis of the cyclone type dust collecting device are parallel to each other, and the dust collecting device is provided behind the extension pipe. Although the height can be lowered, in the handy type in which the suction body and the extension pipe are removed, it is difficult to clean the hand unless the cleaner body is tilted in a vertical direction. Further, in order to improve the centrifugal separation performance, it is necessary to raise the dust collecting device, and therefore the vertical direction of the cleaner main body becomes large, which causes a problem in downsizing.

The vacuum cleaner described in Patent Document 4 is a floor-moving type, but the arrangement of the dust collector is different from that in Patent Document 3 and the dust collector is provided in front of the extension pipe, so that an extension pipe such as under a bed or a sofa is provided. This is a form in which the dust collector does not come into contact with the floor surface when it is brought close to the floor surface. However, in a DC stick cleaner, there is a situation in which the body of the cleaner body is varied during cleaning and the suction port is set to the upper side. In that case, when applying the form of patent document 4 to a DC stick cleaner, there is a possibility that dust may return to the inside of the extension pipe after the operation is stopped, and sucked dust may be returned to the outside again. To solve this problem, it is possible to install a check valve, etc. at the inlet of the dust collector, but dust is trapped in the check valve and the check valve itself becomes ventilation resistance, which increases pressure loss. There is also a problem that the suction force is reduced.

Therefore, an object of the present invention is to use both a stick type and a handy type, and in a vacuum cleaner equipped with a cyclone type dust collector capable of maintaining suction force, has achieved both small size and light weight and the strength of suction force. It is to provide an easy-to-use electric vacuum cleaner.

In order to achieve the above object, according to the electric vacuum cleaner of the present invention, the electric vacuum cleaner has a cleaner main body including an electric blower and a suction port, and a dust collector detachable from the cleaner main body. The device includes an outer cylinder having a substantially cylindrical portion, and a substantially cylindrical inner cylinder contained in the outer cylinder, the inner cylinder being arranged substantially concentrically with the substantially cylindrical portion of the outer cylinder. The outer cylinder is formed on the side of the substantially cylindrical portion so as to be connected to the substantially cylindrical portion at a substantially tangential line outside the outer diameter of the cylindrical portion of the outer cylinder. An inlet having an outer wall surface is provided, the inlet communicates with one end of an introduction pipe that is enclosed in the cleaner body and has both ends open, and the other end of the introduction pipe has the suction port. the inlet tube located on the side of the dust collector, the surface including the opening of the pre-Symbol inlet is characterized by crossing the substantially cylindrical portion.

Further, the dust collector is removable from the cleaner body.

Further, the introduction pipe includes a bent portion, the bend portion of the introduction pipe includes a stretching portion that extends in the vertical direction, the central axis of the stretching portion and the central axis of the dust collector are provided substantially parallel, and the upper portion of the stretching portion is It is characterized in that it is arranged on a side part of the dust collector, the lower part of the extending portion is coaxial with the central axis of the dust collector, and the suction port is provided between the introduction pipe and the dust collector.

According to the electric vacuum cleaner of the present invention, the side portion (upstream side) of the dust collecting device is provided with the introduction pipe whose front and rear are open, and the introduction pipe has the suction port at the lower part, the upper part communicating with the dust collecting device, The introduction pipe is provided with a bent portion, the bending portion is extended in the vertical direction, the central axis of the dust collecting device and the central axis of the extending portion of the introducing pipe are provided in parallel, and the upper extending portion is substantially the outermost circumference of the dust collecting device. When the air containing dust is sucked from the suction port, the lower extension part is provided on the same position as above, and the lower extension part is coaxial with the central axis of the dust collection device and the suction port is provided between the introduction pipe and the dust collection device. , The dust is pushed by the inertial force to the outer peripheral side of the dust collector. With this, it is possible to provide an electric vacuum cleaner having improved centrifugal separation performance by being conveyed into the dust collector and swirling in the vicinity of the inner wall surface of the outer cylinder farthest from the outer circumference of the inner cylinder.

In addition, by providing a bend in the introduction pipe, the extension portion below the introduction pipe can be shortened when the dust collector is brought close to the floor surface during cleaning, so the vertical length of the cleaner body is shortened. It is possible to provide an electric vacuum cleaner that is compact and has improved centrifugal separation performance.

It is an appearance perspective view showing the whole electric vacuum cleaner of the embodiment of the present invention when stored. It is an appearance perspective view showing the whole when using the cleaner body of an embodiment of the present invention as a stick type. It is an appearance perspective view in the state where the handle of the cleaner body of the embodiment of the present invention was folded. It is an appearance perspective view of the charging stand of the embodiment of the present invention. It is an external appearance perspective view which removed the suction body of the cleaner body of the embodiment of the present invention. It is a right side view of a cleaner body when using as a handy type of an embodiment of the present invention. FIG. 7 is a central sectional view of the cleaner body shown in FIG. 6 according to the embodiment of the present invention. It is an appearance perspective view at the time of using a tip brush when using it as a handy body of an embodiment of the present invention. It is an external front view of the dust collector of the embodiment of the present invention. It is an exploded view of the dust collector of an embodiment of the present invention. It is an AA sectional view of the dust collector shown in Drawing 9 of an embodiment of the present invention. It is a front view of the inner cylinder of the embodiment of the present invention. It is an exploded view of an inner cylinder of an embodiment of the present invention. It is a BB sectional view of the inner cylinder shown in Drawing 12 of an embodiment of the present invention. It is a front view which opened the bottom cover in the outer cylinder of the embodiment of the present invention. FIG. 7 is a right side view of the outer cylinder of the embodiment of the present invention with the bottom lid open. It is CC sectional drawing of the outer cylinder shown in FIG. 16 of embodiment of this invention. It is DD sectional drawing of the outer cylinder shown in FIG. 16 of embodiment of this invention. It is sectional drawing which shows another shape of the dust return return prevention surface of embodiment of this invention. It is sectional drawing which shows another shape of the dust return return prevention surface of embodiment of this invention. FIG. 12 is a cross-sectional view taken along line EE 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 at the time of dumping dust in FIG. 21. It is the perspective view which showed only the dust collector of the cleaner body and the introduction pipe in embodiment of this invention. It 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 FF shown in FIG. 24 in the embodiment of the present invention. It is a bottom view showing the dust collector and the introduction pipe in the embodiment of the present invention. FIG. 7 is a cross-sectional view taken along line GG shown in FIG. 6 in the embodiment of the present invention. It is a flow of air inside the cleaner body in the embodiment of the present invention. It is a front view of the vacuum cleaner in the state which extends an expansion pipe and does not rotate a handle in an embodiment of the present invention. It is a front view of the vacuum cleaner in the state which contracted the expansion pipe and rotated the handle in the embodiment of the present invention.

Hereinafter, representative embodiments of the present invention will be described in detail with 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 the upward direction, and the direction in which the suction port 15 is located is the downward direction. In the cleaner body 1, the direction in which the motor case portion 7 and the storage battery case portion 8 are located is the upward direction, and the direction in which the suction port 15 is located is the downward direction. Further, as shown in FIG. 1 and the like, the side of the electric vacuum cleaner 100 where the expandable pipe 5 (pipe case portion 4) is located is the front direction, and the direction where the dust collecting device 12 is located is the rear direction. Further, in the electric vacuum cleaner 100, the right direction and the left direction are defined with the front direction as the front, and the left side is the right direction and the right side is the left direction in the plane of FIG. In addition, as shown in FIG. 5 and the like, also in the description when the suction body 3 is removed from the electric vacuum cleaner 100 to be used as a handy type, the side where the suction port 15 of the cleaner body 1 is located is directed downward, and the pleated filter is used. The side where the 130 is located is upward, the side where the pipe case part 4 is located is forward, the side where the dust collector 12 is located is backward, the left side of the paper is right, and the right is left. The top, bottom, left, right, front, and rear of the charging stand 6 shown in FIG. 4 and the like, and the dust collector 12 shown in FIG. 9, etc. are the same as those of FIG.

First, the overall configuration of the embodiment 100 of the present invention will be described.

The vacuum cleaner 100 according to the present embodiment is used in a state where the handle 2 is not rotated with respect to the telescopic pipe 5 as shown in FIGS. 1, 2 and 5, and as shown in FIGS. 3 and 6 to 8. It can be used in a state where the handle 2 is rotated with respect to the telescopic pipe 5, and mainly in two states.

FIG. 1 is an external perspective view showing an 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 vacuum cleaner 100 is used as a stick type in the embodiment of the present invention. FIG. 3 is an external perspective view of the electric vacuum cleaner 100 with the handle folded according to the embodiment of the present invention.
<Vacuum cleaner 100>
Reference numeral 100 shown in FIG. 1 is an electric vacuum cleaner, and 6 is a charging stand. The electric vacuum cleaner 100 includes a cleaner body 1, a suction body 3, and a dust collector 12. The suction body 3 is detachably provided on the lower end of the cleaner body 1. The dust collector 12 is detachably provided on the rear portion of the cleaner body 1.

The vacuum cleaner 100 of the present embodiment is a rechargeable vacuum cleaner that charges the storage battery 18 at the charging stand 6 and is used as a power source. However, the vacuum cleaner body 1 has a power cord and is used for commercial purposes. It may be used as an AC type electric vacuum cleaner.
<Vacuum cleaner body 1>
Next, the configuration of the cleaner body 1 in the present embodiment will be described.

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

The motor case portion 7 is a substantially cylindrical portion. The storage battery case portion 8 is a substantially box-shaped portion. The pipe case portion 4 is a substantially tubular portion. The motor case portion 7 contains an electric blower 17 (see FIG. 7). The storage battery case portion 8 contains a storage battery 18 (see FIG. 7). A telescopic pipe 5 can be included in the pipe case portion 4. An introduction pipe 160 is included in the introduction pipe case portion 14.

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

With the handle 2 not rotated as shown in FIGS. 1, 2, and 5, the handle 2 is located at the upper part of the cleaner body 1, the suction port 15 is located at the lower part, and the pipe case part 4 is located between the suction port 15 and the handle 2. doing. The motor case portion 7 is located above the rear of the pipe case portion 4. A storage battery case portion 8 is located above the pipe case portion 4 and behind the motor case portion 7. The introduction pipe case portion 14 is located to the right of the pipe case portion 4.

Further, a suction body attachment/detachment button 13 is provided at the bottom of the cleaner body 1 (pipe case portion 4). By pressing the suction body attachment/detachment button 13, the suction body 3 can be removed from the cleaner body 1.

The handle 2 has operation buttons 11a and 11b, and a lower portion of the handle 2 has a telescopic pipe 5 which is provided so as to be telescopic in the vertical direction. In addition, the handle 2 includes a mechanism (handle support shaft 24) that is rotatable with respect to the expandable pipe 5. By contracting the telescopic pipe 5 and rotating the handle 2 with respect to the telescopic pipe 5, the suction body 3 is removed from the cleaner main body 1 and the vertical direction of the cleaner main body 1 is made compact so that it can be used as a handy type. The mouthpiece 3 may be attached and the handle 2 may be rotated with respect to the telescopic pipe 5 to be compact (state shown in FIG. 3).

In addition to the mouthpiece 3, the applied mouthpiece 30 may be attached. The applied mouthpiece 30 is used by being attached to the suction mouth 15, and the tip of the applied mouthpiece 30 is smaller than the tip of the mouthpiece 3 so that it can clean a narrow space where the mouthpiece 3 does not enter. Is desirable. Further, it is desirable that the structure be expandable and contractable in order to clean high places that cannot be reached by the handy type.

Next, the configurations of the handle 2 and the telescopic pipe 5 according to the embodiment of the present invention will be described. As described above, the handle 2 has the operation buttons 11a and 11b and the operation button 11b. Therefore, as shown in FIG. 3, the handle 2 is rotated by about 180° to the front side (the pipe case portion 4). ), and when used as a handy type, since the operation button 11b appears on the front of the vacuum cleaner, the power can be turned on and off easily.

The surface of the handle 2 is preferably made of a soft material such as a thermoplastic resin so that the user can easily hold it by hand. In addition, it is desirable to provide a handle non-slip shape or the like so that the cleaner body 1 does not slip during cleaning by the user.

FIG. 5 is a perspective view of the vacuum cleaner cleaner 1 in which the telescopic pipe 5 is contracted and stored in the telescopic pipe part 4 and the suction body 3 is removed. In FIG. The side view which looked at the cleaner body 1 in the state fixed to 4 from the right side is shown.

The handle 2 is rotatably supported by a handle support shaft 24 provided at one end of the telescopic pipe 5. When the electric vacuum cleaner 100 is used as a stick type, the handle 2 is set up (not rotated) to extend the expansion pipe 5 to clean the floor surface. Although details of the fixing structure and the rotation mechanism inside the handle support shaft 24 are omitted, the lock of the rotation mechanism is released by pushing down the handle support shaft 24, so that the handle 2 is centered on the handle support shaft 24 and the front side. Rotate to (pipe case portion 4 side).

The extendable pipe 5 is extendably supported in the pipe case portion 4 provided in the cleaner body 1. Although details of the expansion and contraction of the expansion and contraction pipe 5 and the lock mechanism are omitted, the expansion and contraction pipe 5 is expanded and contracted in the vertical direction by pressing the expansion and contraction button 10. Further, a lock mechanism is provided so that the telescopic pipe 5 does not contract when the user is using the cleaner body 1. The length of expansion/contraction of the expansion/contraction pipe 5 may be adjusted in multiple stages.

As described above, when the vacuum cleaner 100 is used as a handy type by the telescopic mechanism of the telescopic pipe 5 and the rotating mechanism of the handle 2, the telescopic pipe 5 is arbitrarily contracted by the user, the handle 2 is folded, and the shape is changed. Can be changed. Also, by using a handy type, it can be stored in a place with a low height.

Next, a state when the cleaner body 1 according to the embodiment of the present invention is used as a handy type will be described.

The pipe case part 4 provided on the front side of the cleaner body 1 is provided with a handle fixing clamp 101 biased upward by a handle clamp spring 108. The handle fixing clamp 101 can be fitted with a protrusion (not shown) provided at the end of the handle 2 to fix the handle 2 to the pipe case portion 4. When the handle fixing clamp 101 is slid downward, the handle fixing clamp 101 is disengaged from the protrusion, and the handle 2 can be rotated in a direction away from the cleaner body 1.
<Tip brush 20>
The tip end (lower side) of the cleaner body 1 is provided with a tip brush 20 rotatable with respect to the tip end. The tip brush 20 has brush portions in three directions. A brush portion is provided on the rear side of the tip of the cleaner body 1. When the tip brush 20 is rotated to be housed as shown in FIG. 5, the brush portion of the tip brush 20 faces upward, and the brush portion of the tip portion of the cleaner body 1 faces forward. Become. When the tip brush 20 is rotated to be used as shown in FIG. 8, the brush portion of the tip brush 20 and the brush portion of the tip portion of the cleaner body 1 are both directed forward, and both brush portions are In addition, it is provided so as to surround the periphery of the suction port 15. Since the tip brush 20 is used to rotate so that both brush portions are on the cleaning surface side, the gap between the brush surface and the cleaning surface can be reduced, suction performance can be improved, and cleaning can be performed without damaging the cleaning surface.
<Charging stand 6>
The configuration of the charging stand 6 in this embodiment will be described. FIG. 4 shows an external perspective view of the charging stand 6.

The charging stand 6 includes a base portion 25 and a stand portion 26, and the stand portion 26 is detachable from the base portion 25. The base portion 25 and the stand portion 26 do not have to be detachable, but it is desirable that they be detachable in order to enhance the storability and the packing.

The base portion 25 has a substantially box shape. The base portion 25 has a power cord on the rear side and has a charging board (not shown) inside. A weight (not shown) is provided inside the base portion 25. Behind the base portion 25, an applied mouthpiece fixing protrusion 32 having a substantially cylindrical shape and protruding upward is provided. The applied suction body 30 can be inserted and stored in the applied suction body fixing protrusion 32. The base portion 25 is a portion on which the suction body 3 is placed. Therefore, the area of the upper surface of the base portion 25 is preferably larger than the area of the suction body 3.

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

The power cord of the base portion 25 and the charging board are electrically connected to the charging base terminal portion 28 of the stand portion 26 by wiring (not shown). The wiring is housed inside the base portion 25 and the stand portion 26.

The protrusion-shaped charging base terminal portion 28 can be fitted with the recessed main 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 conductive state. The storage battery 18 can be charged by fitting the charging base terminal portion 28 and the main body terminal portion 9 while the power cord of the charging base 6 is connected to the outlet of the commercial power supply. In the state where the power cord is not connected to the outlet, the charging stand 6 can be used as a storage stand when fixing and storing the cleaner body 1. The weight inside the base portion 25 has an effect that it is hard to fall down when the cleaner body 1 is fixed.
<Motor case unit 7, storage battery case unit 8>
Next, the configurations of the motor case portion 7 and the storage battery case portion 8 according to the embodiment of the present invention will be described with reference to FIG. 7. FIG. 7 is a central cross-sectional view of the handy type shown in FIG. An electric blower 17 is arranged in the center of the motor case portion 7. In the handy type configuration in which the handle 2 is fixed to the pipe case portion 4, the motor case portion 7 and the storage battery case portion 8 are arranged behind the handle 2. Further, below the motor case portion 7, a dust collector 12 described later is attached. The center of gravity of the entire cleaner body 1 to which the dust collecting device 12 is attached is close to the handle 2 fixed to the pipe case portion 4, and the handy type configuration makes it easy to hold. In the present embodiment, the storage battery case portion 8 is arranged behind the motor case portion 7. However, the present invention is not limited to this, and the storage battery 18 may be arranged so as to surround the electric blower 17 or the electric blower 17. You may arrange on both right and left. Further, below the storage battery case portion 8, a main body terminal portion 9 for charging the storage battery 18 is provided, and the storage battery 18 is charged by fitting with the charging base terminal portion 28 of the charging base 6 described above and conducting. You can

A fixed case 109 for fixing the electric blower 17 is provided around the electric blower 17, and a main body substrate 110 for controlling the cleaner main body 1 is fixed to an upper portion of the fixed case 109 and covers the motor case portion. 7 is formed. Depending on the arrangement of the storage battery 18, the main body substrate 110 may be provided in front of, in 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 illuminate two colors, red and green, and can display the operating state of the cleaner main body 1 and the charging state of the storage battery 18. The number of colors of the main body LED 111 may be one color or two or more colors, and depending on the combination of lighting and blinking, the charging completion state of the storage battery 18, the operation error state of the electric vacuum cleaner 100 may be displayed, or the LED may be turned on or blinking as a design. good.

Further, as shown in FIG. 6, an exhaust port 106 is provided on the side surface (right side surface in the present embodiment) of the motor case portion 7, and an exhaust filter (not shown) is provided inside. In the present embodiment, since the user is supposed to be right-handed, the exhaust port 106 is provided on the right side of the cleaner body 1 to prevent the exhaust from directly hitting the user. It should be noted that the exhaust port 106 may be provided on the left side to support the case where the user is left-handed, or by providing the exhaust air amount not only on one side but on both the left and right sides, the amount of exhaust that directly strikes the user can be adjusted. You may suppress it. It is desirable that the exhaust port 106 has a lattice shape that is substantially parallel to the longitudinal direction of the cleaner body 1. When the user is using the handheld type, there is an effect that the exhaust of the electric blower 17 does not hit the user directly. In addition, when used as a handy type, the cleaner body 1 may be temporarily placed on the floor surface or the like, but even if a liquid such as water is accidentally spilled from the front of the cleaner body 1, the It is possible to prevent liquid from entering the inside of the case portion 7 and prevent failures of the electric blower 17 and the storage battery 18.

Below the motor case portion 7, a suction portion 113 that communicates the electric blower 17 and the dust collecting device 12 is provided, and an end face thereof is an airtight surface 112 for keeping the motor case portion 7 and the dust collecting device 12 airtight. Have. A protective cover 115 is provided in the ventilation passage of the suction portion 113, and a protective filter (not shown) is provided on the upstream side of the protective cover 115. The protective filter prevents dust from entering the inside of the electric blower 17 when the dust collector 12 is erroneously operated with the dust collector 12 removed. Further, it is desirable that the protective filter is made of a material that is detachable and washable so that it can be cleaned when it becomes dirty. The protective filter is partially provided with a notch, and the protective filter is fixed by penetrating the notch into a protrusion (not shown) provided on the protective cover 115. It is desirable that the protective cover 115 has a lattice shape formed of holes having a size such that a finger or the like cannot be inserted so that a user's finger does not touch the electric blower.

On the upstream side of the electric blower 17, a vibration-proof airtight rubber 116 made of an elastic sealing member such as rubber is provided, and the vibration-proof airtight rubber 116 adheres to a flat surface on the outer periphery of the protective cover 115 to ensure airtightness. be able to. Further, since the vibration-proof airtight rubber 116 is fixed together with the electric blower 17 in the fixed case 109, the vibration-proof airtight rubber 116 also plays a role of absorbing the rotational vibration generated by driving the electric blower 17.
<Dust collector attachment/detachment mechanism>
Next, the configuration of the dust collecting device attaching/detaching mechanism (D lock button 119) according to the embodiment of the present invention will be described.

The pipe case portion 4 is provided with a dust collecting device fixing protrusion 117 for fixing the dust collecting device 12, and the motor case portion 7 is provided with a dust collecting device fixing hole 118 for fixing the dust collecting device 12. The dust collector 12 includes a D lock button 119 that is biased by a D lock button spring 120. The dust collector fixing protrusion 117 is inserted into the recess 159 on the bottom surface of the dust collector 12, and the dust collector fixing protrusion 117 is rotated forward (on the pipe case portion 4 side) to move the D lock button 119 to the dust collector. The dust collector 12 is attached to the cleaner body 1 by being hooked in the fixing hole 118.

When removing the dust collecting device 12, the D lock button 119 is slid downward to remove from the dust collecting device fixing hole 118, and the dust collecting device 12 is rotated in the opposite direction to the dust collecting device 12. It can be removed from the fixing protrusion 117.

Next, the configuration of the dust collector 12 of the embodiment of the present invention will be described.
<Dust collector 12>
The dust collector 12 has a function of separating air containing dust sucked from the suction body 3 or the suction port 15 into dust and air, and collecting the dust.

9 is a front view of the dust collector 12 as seen from the front of the cleaner body 1 (pipe case portion 4), FIG. 10 is an exploded view of the dust collector 12 shown in FIG. 11, and FIG. 11 is the dust collector shown in FIG. 12 shows a sectional view taken along line AA of 12. FIG.

The dust collector 12 is generally formed by an outer cylinder 128, an inner cylinder 129, a dust collecting filter 130, a filter case 131 accommodating the dust collecting filter 130, an upper lid 132 and a bottom lid 133. The inner cylinder 129 and the filter case 131 are integrated with each other, and the filter case 131 is provided above the inner cylinder 129. The outer cylinder 128 is a cylinder whose upper and lower sides are open, a bottom cover 133 is provided in the lower part of the outer cylinder 128, and a filter case 131 integrated with the inner cylinder 129 is inserted from the opening in the upper part of the outer cylinder 128. Then, the dust collecting filter 130 is housed in the filter case 131, and the upper lid 132 is fastened and integrated with the upper portion of the outer cylinder 129 to form the dust collecting device 12. At this time, the inner cylinder 129 is mounted so as to be substantially concentric with the outer cylinder 128. When the inner cylinder 129 is attached to the outer cylinder 128, a space for separating and accommodating dust is provided between the outer cylinder 128 and the inner cylinder 129. 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 accommodating part 135. The dust separating section 134 is a space for separating the dust from the air carrying the dust, and the dust storing section 135 is a space for collecting and storing the dust.
<Inner cylinder 129>
The inner cylinder 129 will be described with reference to FIGS. 12, 13, and 14. 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 taken along line BB in FIG.

The inner cylinder 129 is composed of an upper cylinder 129a having an intake portion 129c on the upper side and a lower cylinder 129b having a larger diameter than the upper cylinder 129a on the lower side. An intake portion 129c is provided on a side surface of the upper cylinder 129a, and is formed by a lattice-shaped frame body (support bone). In the present embodiment example, the frame body (support bone) in the vertical direction is used, but a lattice shape may be used. A mesh member 136 is laid over the outer peripheral surface of the air intake portion 129c, and the mesh member 136 is held by a frame (support bone) by coating or insert molding. By providing the mesh member 136 in the intake portion 129c, the upper cylinder 129a has a filter function and suppresses the inflow of fine dust into the inner cylinder 129. In this embodiment, the mesh member 136 is made of polyester, but may be made of metal (for example, stainless steel), and may have a small-diameter through-hole (a diameter of about 2 mm that can be molded by a mold) instead of a frame (support bone). The intake section 129c having a plurality of holes may be used. Unlike the case where the mesh member 136 is stretched over the frame body (support bone), the through hole is effective for strength and breakage of the mesh member 136, and has an advantage that secondary molding is unnecessary. However, since the diameter of the through hole is larger than the mesh opening of the mesh member 136, in order to prevent the inflow of fine dust into the inner cylinder 129, it is preferable to make the hole as small as possible in consideration of the molding machine. preferable.

As described above, the filter case 131 is provided on the upper side of the upper cylinder 129a. 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 is provided with an opening 131a which is communicated with the internal space of the upper cylinder 129a at approximately the center. In the present embodiment, the upper cylinder 129a and the filter case 131 are integrally formed, but a detachable structure may be used. Further, a packing 137 is provided below the filter case 131, and a state in which the outer case 128 and the filter case 131 are kept airtight when the filter case 131 is housed in a filter case receiving portion 128a of an outer case 128 described later. Contact with. In the present embodiment, the packing 137 provided in the filter case 131 has a structure (removable structure) in which a ring-shaped rubber member is attached to the recessed portion under the filter case 131, but the dust collector 12 is cleaned. In this case, the packing 137 may be removed, and in order to prevent forgetting to attach the packing 137, the filter case 131 and the packing 137 may be integrally molded (secondary molding).

The lower cylinder 129b of the inner cylinder 129 is provided concentrically with the upper cylinder 129a, and has a substantially cylindrical shape whose upper surface is closed. In other words, the bottom surface is open and has a space 138. Then, a space 138 of the lower cylinder 129b is provided with an umbrella portion 139 in which the shape of the lower cylinder 129b is offset so as to be included therein, and the space 139a inside the umbrella portion 139 has a cylindrical body 140 protruding downward from the upper surface. Is provided. The tubular body 140 is provided concentrically with the umbrella portion 139, has a substantially hemispherical shape with the bottom surface 140a closed, and has a substantially conical shape that tapers toward the bottom surface 140a. By making the cylindrical body 140 into a substantially conical shape so as to be tapered, a container shape that expands together with a generally tapered conical portion at the lower portion of the outer cylinder 128, which will be described later, is formed. Become. In this cylindrical body 140, the diameter of the substantially conical portion may be reduced in order to increase the dust collection volume.

As described above, by including the umbrella portion 139 in the lower cylinder 129b and providing the sliding mechanism that slides in the vertical direction, it becomes easy to discharge dust when dumping dust. The umbrella portion 139 is accommodated in the lower cylinder 129b except when the dust is dumped such as during suction, and slides downward when the dust is dumped to push out the dust in the dust collector 12.

The sliding mechanism is as follows. A cylindrical bottomed 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 141a and a spring shaft 141b. Therefore, the outer circumference of the spring case 141 is covered with the cylindrical body 140. Further, the lower cylinder 129b is provided with the piston portion 142 which is nested in the spring case 141. The spring shaft 141b has a structure in which a stopper 143 is fastened with a screw 144 so that the stopper 143 can be fixed. The spring 145 is inserted into the spring case 141 from above, and a nested piston portion 142 integrated with the lower cylinder 129b is attached. After that, the stopper 143 is fastened to the spring shaft 141b with a screw 144 or the like. With such a structure, a sliding mechanism of the umbrella portion 139 is configured. The stopper 143 slides up to the stopper receiving portion 129d provided on the upper surface of the lower cylinder 129b. Therefore, as described above, the sliding distance is less than the height of the space 138 of the lower cylinder 129b, and the height of the stopper 143 is substantially equal to the sliding distance. In the present embodiment example, the spring case 141 is formed as a separate component, and the umbrella portion 139 is removable. The umbrella portion 139 and the spring case 141 are fixed by a lock mechanism (not shown) provided on both sides, and the umbrella portion 139 is rotated to attach and detach. Further, a cutout portion 141c is provided on the side surface of the spring case 141, and a projection portion (not shown) provided on the piston portion 142 is fitted in the cutout portion 141c to prevent rotation when the umbrella portion 139 is attached and detached. Has become. By providing such a cap portion 139 attachment/detachment structure, even when dust enters the lower cylinder 129b, it is possible to remove the dust by removing the cap portion 139. Further, even when the inner cylinder 129 is washed, the water can be easily removed because it can be decomposed, and the care can be facilitated. Although the umbrella portion 139 and the spring case 141 are separate components in this embodiment, the umbrella portion 139 and the spring case 141 may be integrally formed. In that case, it is possible to mold with a mold by forming the cylinder 140 as a separate component.

In such a sliding mechanism, the state in which the spring 145 is close to the natural length is the state in which the umbrella portion 139 projects most. The vertical sliding distance of the umbrella portion 139 is less 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 exceed the bottom surface 129e of the lower cylinder 129b. This is to suppress the trapping of dust between the bottom surface 129e and the upper surface 139a 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 dumping dust. .. Further, the umbrella portion 139 is provided with a necessary minimum gap that can easily slide in the space 138 in the lower cylinder 129b. Further, since the umbrella portion 139 is inside the dust accommodating portion 135, if the gap (gap) between the outer circumference of the umbrella portion 139 and the lower cylinder 129b is too small, dust may be caught in the gap and may not slide easily. In the present embodiment, a gap is provided in consideration of the trapping of dust, and a plurality of ribs 139b are provided on the outer circumference of the umbrella portion 139 to reduce rattling during sliding due to the increased gap. Further, the umbrella portion 139 is provided with a step portion 139d, and when the step portion 139d and the bottom surface 129e of the lower cylinder 129b are combined (the umbrella portion 139 is set in the space 138 of the lower cylinder 129b), The gap with the umbrella portion 139 disappears. This suppresses the entry of dust into the gap between the lower cylinder 129b and the inside of the umbrella portion 139 during dust suction. Further, a collar portion 146 is provided on the bottom of the umbrella portion 139, and the collar portion 146 suppresses the return of dust from the dust accommodating portion 135 to the dust separating portion 134. Further, since the dust accumulates below the collar portion 146, it is preferable to set the timing for discharging the dust before the dust exceeds the collar portion 146.
<Top 132>
As described above, the inner cylinder 129 is accommodated in the outer cylinder 128, and the outer cylinder 129 and the inner cylinder 128 are fixed to each other to form the integrated dust collecting device 12. The outer cylinder 128 and the inner cylinder 129 are fixed by the upper lid 132. As shown in FIG. 10 and FIG. 11, the upper lid 132 is a substantially tubular body that is open at the top and bottom, and the outside of the filter case receiving portion 128a covers the filter case receiving portion 128a provided on the upper portion of the outer cylinder 128 to be described later. One size larger than the diameter. The filter case receiving portion 128a has a structure in which the upper lid 132 and the filter case receiving portion 128a are fixed by rotating the filter case receiving portion 128a with the upper lid 132 covered. The filter case receiving portion 128a is provided with notches on the inner surface of the upper lid 132 and projections on the filter case receiving portion 128a so that the upper lid 132 can be covered only at a predetermined position (not shown). When the upper lid 132 is pressed against the outer cylinder 128 side in a state where the cutout portion and the projection portion are aligned and the upper lid 132 is rotated, the projection portion enters the cutout space and the upper lid 132 and the outer cylinder 128 can be fixed.

Further, the upper lid 132 is provided with the D lock button 119 described above, and is fixed to the cleaner body 1.
<Dust filter 130>
As shown in FIGS. 10 and 11, the dust collecting filter 130 is formed of a frame body and a filter member 147 folded into a pleated shape inside the frame body. It is desirable that the filter surface of the dust collection filter 130 be substantially horizontal. This is because a force in the gravitational force direction acts on the fine dust attached to the filter member 147, so that the dust can be easily dropped. Further, since the filter area is increased by folding the filter member 147 into a pleat shape, the pressure loss due to the filter member 147 can be reduced. The material of the filter portion 147 is, for example, a high-density HEPA filter (High Efficiency Particulate Air Filter). The HEPA filter is an air filter having a particle collection rate of 99.97% or more with respect to particles having a rated air volume of 0.3 μm and an initial pressure loss of 245 Pa or less. It is desirable that the user can wash the dust filter 130 with water. Further, a sponge filter (not shown) may be provided on the front part of the dust collection filter 130. The sponge filter preferably extends the frame of the dust filter 130 to the front side and can be fitted into the frame. Moreover, it is desirable that the user can wash the sponge filter with water. As a result, the dust filter 130 is less likely to be directly contaminated with dust, and the careability is improved.

The dust collecting filter 130 fits in a filter case 131 provided on the upper part of the inner cylinder 129. Therefore, the dust collecting filter 130 is located between the upper lid 132 and the filter case 131 described above. In order for all the air that has passed through the mesh member 136 of the inner cylinder 129 to pass through the dust collecting filter 130, it is necessary to press the dust collecting filter 130 between the upper lid 132 and the filter case 131. Therefore, the dust collection filter 130 is provided with the packing 148 for keeping the upper lid 132 and the filter case 131 airtight on the outer periphery. The packing 148 is formed of a rubber member or the like on the upper and lower surfaces of the collar-shaped collar portion 130a provided on the outer periphery of the dust collecting filter 130. When the dust filter 130 is attached to the filter case 131, the lower surface side of the packing 148 and the flange portion 131a on the upper portion of the filter case 131 are in contact with each other. An airtight surface 132a is provided on the upper portion of the upper lid 132. As described above, when the upper lid 132 is covered from above the dust collecting filter 130, the upper surface side of the packing 148 and the airtight surface 132b are in contact with each other, and the operation of fixing the upper lid 132 The dust filter 130 is pressed between the upper lid 132 and the filter case 131. At this time, as described above, the packing 137 provided on the lower portion of the filter case 131 and the outer cylinder 128 are also pressed against each other so that airtightness can be maintained.

Further, a packing 130b for keeping airtightness is also provided on the upper surface of the dust collecting filter 130. The packing 130b is provided so as to come out above the top surface of the upper lid 132. When the dust collector 12 is attached to the cleaner body 1, the packing 130b keeps the cleaner body 1 and the dust collector 12 airtight.
<Outer cylinder 128>
The outer cylinder 128 will be described with reference to FIGS. 15 to 18. 15 is a front view of the outer cylinder 128 with the bottom lid 133 opened, FIG. 16 is a right side view of the outer cylinder 128 with the bottom lid 133 opened, and FIG. 17 is a sectional view taken along line CC of FIG. 21 is a DD cross-sectional view in FIG.

The outer cylinder 128 is a substantially cylindrical body that is open at the top and bottom, and has a filter case receiving portion 128a that is slightly larger than the outer diameter of the filter case 131 so as to enclose the filter case 131 in the upper part. The filter case receiving portion 128a is provided with a flange portion 128b protruding outward and inward. The bottom surface of the above-mentioned upper lid 132 is in contact with the outside of the flange portion 128b, and the outer diameter of the flange portion 128b is substantially the same as the outer diameter of the upper lid 132. Although not described in detail, the filter receiving portion 128a is provided with one notch, and is cut to a size that avoids the protrusion provided on the outer periphery of the filter case 132. Therefore, the inner cylinder 129 to be inserted into the outer cylinder 128 is positioned by aligning the position of the notch with the protrusion of the filter case 132. The height of the filter receiving portion 128a is set higher than the sliding distance of the inner cylinder 129 described above. This is the height at which the filter case 131 fits inside the filter case receiving portion 128a when the inner cylinder 129 is mounted (with the umbrella portion 139 protruding) with the bottom lid 133 closed, which will be described later. If the case 131 exceeds this height, the inner cylinder 129 will not be stable and will be difficult to mount. The inner diameter of the flange portion 128b is smaller than the outer diameter of the packing 137 provided in the lower portion of the filter case 131, and when the filter case 131 is fixed, the packing 137 is pressed against the upper portion of the flange portion 128b to maintain airtightness.

A bottom lid 133 is provided to be openable and closable in the opening on the opposite side of the filter case receiving portion 128a (the lower portion of the outer cylinder 128). Details of the shape of the bottom cover 133 will be described 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 DD sectional view of FIG. 18, the inflow port 149 is provided on the surface (b) parallel to the center line (a), and the inflow port outer wall surface 149 a is larger than the outer diameter of the outer cylinder 128. It is located on the outer side and is formed so as to be connected to the outer cylinder 128 by a substantially tangent line. The opening of the inflow port 149 has a substantially rectangular shape. Therefore, the inflow port outer wall surface 149a is not parallel to the center line (C). In other words, the inflow port 149 is outside the outer diameter of the outer cylinder 128. This is to prevent the inner cylinder 129 and the inflow port 149, which are coaxial with the outer cylinder 128, from overlapping with each other when viewed from the surface of the inflow port 149. When the inner cylinder 129 faces the surface of the inflow port 149, the dust-containing air that has flowed into the inner cylinder 129 collides with the inner cylinder 129, and the dust separation performance deteriorates. In addition, since the side surface of the inner cylinder 129 has a filter structure in which the mesh member 136 is bridged, problems such as dust sticking to the mesh member 136 may occur, and the suction force may decrease. Further, the arrangement of the inflow port 149 as in this embodiment is also effective in reducing pressure loss and noise. When the inflow port 149 having the same opening area as that of the present embodiment is housed within the outer diameter of the outer cylinder 128, the inner cylinder 129 faces the inflow port 149, and the above-described problem occurs. Therefore, it is necessary to reduce the width direction of the inflow port 149, and the flow velocity increases, resulting in pressure loss and noise. In order to prevent pressure loss and noise from increasing, it is conceivable to change the aspect ratio of the inflow port 149 to make the inflow port 149 long in the vertical direction to secure the opening area. If the length is increased, the vertical direction of the outer cylinder 128 becomes longer, and the dust collector 12 becomes larger. This example of the embodiment is a stick-type/handy-type cleaner, and a compact cleaner body 1 is desired, and the dust collector 12 also needs to be compact. Therefore, the dust collector 12 of the present embodiment can provide the electric vacuum cleaner 100 in which the cleaner main body 1 is made compact.

In addition, as described above, the inflow port 149 is provided with an opening on the surface (b) which is parallel to the center line (a) shown in the DD sectional view of FIG. 18. In addition, the surface having the opening of the inflow port 149 (b) is located inside the outer diameter of the outer cylinder 128 (on the side of the center line (a)). Since the introduction pipe 160, which will be described later, is fluidly connected to the outer cylinder 128, the introduction (160) can be achieved by making the surface (b) of the inlet 149 smaller than the maximum outer diameter of the outer cylinder 128 (b). The front-rear height of the cleaner body 1 including the pipe 160 can be reduced. In other words, it is possible to provide the electric vacuum cleaner 100 in which the cleaner body 1 is made compact by offsetting the introduction pipe 160 without providing it on the same line of the central axis (c) of the outer cylinder 128.

Further, although the inlet 149 is provided on the right side in the present embodiment, it may be provided on the left side, and the swirling direction of the inflowing air is in the opposite direction, but it is necessary to consider the influence on the dust separation performance and the like. There is no.

The outer cylinder 128 of the present embodiment example has a cylindrical shape on the upper side, as shown in the CC cross section of FIG. Further, as surrounded by a broken line 190 in the figure, a dust return prevention surface 151 is provided substantially horizontally from the substantially central portion to the outside in the direction substantially perpendicular to the central axis of the dust collector 12, and the dust return prevention surface 151 is provided. It is a shape in which the lower part expands into a substantially conical shape. The dust return prevention surface 151 is enlarged from the inner peripheral surface of the upper cylindrical portion of the outer cylinder 128 to the outer diameter side by about 2.5 mm. When the inner cylinder 129 is attached to the outer cylinder 128, the lower surface of the umbrella portion 139 of the inner cylinder 129 is inside the cylinder above the outer cylinder 128, and the lower surface of the umbrella portion 139 of the inner cylinder 129 (below the collar portion 146) is dusty. Is deposited. Therefore, the dust return prevention surface 151 prevents the dust accumulated in the dust containing portion 135 below and the dust contained in the air returning from the dust containing portion 135 from returning along the inner surface of the outer cylinder 128. As a result, it is possible to prevent dust from adhering to the mesh member 136 on the side surface of the inner cylinder 128 and blow off fine dust from the mesh member 136, so that the dust collecting device 12 has a reduced suction force. The electric vacuum cleaner 100 can be provided.

Further, by providing the dust return prevention surface 151 and making the lower side from the dust return prevention surface 151 into a substantially conical shape, the volume of the outer cylinder 128 can be expanded and more dust can be accumulated. In the present embodiment, the dust collector 12 is inclined about 8 degrees with the central axis of the dust collector 12 in the vertical direction.

Further, as shown in the cross-sectional view of FIG. 19, a portion surrounded by a broken line 190 in FIG. 17 may be provided with an annular rib 152 below the dust return prevention surface 151 in a substantially vertical direction. The annular rib 152 extends upward from the cylindrical portion and projects inward in a substantially conical shape, and can further prevent dust from returning along the inner wall of the outer cylinder 128.

Further, a portion surrounded by a broken line 190 in FIG. 17 has a cylindrical shape in the upper portion as shown in the cross-sectional view in FIG. 20, and is inclined upward from a direction substantially perpendicular to the central axis of the dust collecting device 12. The dust return prevention surface 151 may be provided, and the shape downwardly expanding from the dust return prevention surface 151 may have a substantially conical shape. By providing such an inclined dust return prevention surface 151, it is possible to prevent dust from adhering to the mesh member 136 on the side surface of the inner cylinder 129 and to prevent fine dust from passing through the mesh member 136. It is possible to provide the electric vacuum cleaner 100 having the dust collector 12 in which the reduction in force is suppressed.

Further, the electric vacuum cleaner 100 of the present embodiment has a structure for both stick type and handy type, and in the handy type state, the posture of the main body 1 of the vacuum cleaner is various, and the upper part of the dust collector 12 (dust catching filter). 130 side) may face downward. At this time, by providing the dust return prevention surface 151 as described above, it is effective in suppressing the return of dust from the dust container 135 to the dust separator 134.

In this embodiment, the dust collector 12 of the stick-type/handy-type vacuum cleaner 100 has been described. However, even in the floor-moving type cyclone vacuum cleaner, by providing the dust return preventing surface 151 as described above. Since it is possible to suppress the return of dust from the dust container 135 to the dust separator 134, it is effective in blowing out fine dust and compressing dust.
<Lid lock mechanism 150>
The lid lock mechanism 150 provided on the side surface of the outer cylinder 128 includes a lid lock cover 153, a button 154, and a spring (not shown). Although details are omitted, the button 154 is biased by a spring, and when the button 154 is pressed, the claw portion 155 integrated with the button 154 is rotated, and the button 154 is provided from the hook portion 156 provided on the bottom cover 133. The claw portion 155 of 154 is disengaged and the bottom lid 133 is opened. The claw portion 155 and the hooking portion 156 are formed with slopes (not shown), and the slopes come into contact with each other when the bottom cover 133 is closed, and the bottom cover 133 is further pushed up. As a result, the spring contracts, the claw portion 155 goes over the hook portion 156, and the bottom lid 133 is closed again.
<Bottom cover 133>
The bottom lid 133 is in the shape of a dish with a depth, and is provided with a packing 157 on the outer periphery of the upper surface. When the bottom lid 133 is closed, airtightness with the bottom of the outer cylinder 128 can be maintained. The bottom lid 133 has a dish shape to increase its strength. Further, a hooking portion 156 that locks the outer cylinder 128 and the bottom lid 133 described above is provided on a part of the outer circumference, and a hinge portion 158 having a rotating shaft 158a is provided on the opposite surface.

The bottom surface (back side surface) of the bottom lid 133 is provided with a recessed portion 159 on the pipe case portion 4 side of the cleaner body 1, and the dust collector fixing protrusion 117 of the cleaner body 1 and the recessed portion on the bottom surface of the bottom lid 133. It has a shape in which 159 is fitted. As described above, when the dust collector 12 is attached to the cleaner body 1, the recess 159 on the bottom surface of the bottom lid 133 is fitted into the dust collector fixing protrusion 117 of the cleaner body 1 to start the protrusion. Then, the dust collector 12 is pressed against the cleaner body 1 side. Then, the dust collector 12 is integrated with the cleaner body 1 by the D lock button 119 on the upper portion of the upper lid 132 described above. Therefore, when the dust collector 12 is attached to the cleaner body 1, the lid lock mechanism 150 is hidden on the cleaner body 1 side. This is because if the lid lock mechanism 150 is provided on the opposite side (outside), the lid lock mechanism 150 may be released during cleaning, and malfunctions are prevented. For example, when cleaning the sofa or the bottom of a bed in a stick type state, the vacuum cleaner body 1 may be brought close to the horizontal surface with respect to the floor surface. At this time, if the lid lock mechanism 150 is provided at the rear side, , The lid lock mechanism 150 may be released by coming into contact with the floor surface. The positions of the lid lock mechanism 150 and the hinge portion 158 are not limited to this, and may be provided on the left and right sides of the cleaner body 1. By providing the right and left sides, the above-described malfunction can be prevented, and since the protrusion of the hinge portion 158 is eliminated, the height of the cleaner body 1 in the front-rear direction can be reduced, and the cleaner can be made compact.

In addition, the dish-shaped bottom lid 133 has a center protruding portion, and the center portion is provided with a recessed portion 170 that is recessed from the protruding portion. Further, the recessed portion 170 is larger than the spherical radius of the spherical shape of the bottom surface 140a of the cylindrical body 140 described above, and the depth of the recessed portion 170 is such that the bottom lid 133 is in an open state (with respect to the bottom surface of the outer cylinder 128). (A vertical state) so that a horizontal surface cannot be formed in the recess 170. In addition, the recess 170 is made as shallow as possible to prevent dust from remaining in the recess 170 when discharging dust.

In the present embodiment, the recess 170 is formed as a separate body, and a material such as POM (polyoxymethylene) is used so as to reduce the wear of the member due to the friction with the cylinder 140 when the bottom cover 133 is opened and closed. However, they may be integrally molded.

In the structure of the outer cylinder 128 and the inner cylinder 129 as described above, by mounting the inner cylinder 129 on the outer cylinder 128, the sliding mechanism provided on the inner cylinder 129 causes the sliding mechanism of the bottom lid 133 provided on the lower part of the outer cylinder 128. It is done by opening and closing. When the bottom lid 133 is opened, the umbrella portion 139 projects downward, and when the bottom lid 133 is closed, the spring 145 contracts, and the umbrella portion 139 fits inside the lower cylinder 129b. Therefore, when the lid lock mechanism 150 of the bottom lid 133 is released at the time of dumping dust, the umbrella portion 139 jumps downward and pushes out dust.
<Operation when discarding garbage>
In the sliding mechanism for the outer cylinder 128, the inner cylinder 129, and the dust discharge as described above, the operation of dumping dust will be described with reference to FIGS. 21 and 22. 21 is a sectional view taken along the line EE shown in FIG. 11 with the bottom lid 133 closed, and FIG. 22 shows the state after the dust is discharged in FIG. 21 (the bottom lid 133 is opened).

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

At the same time when the bottom cover 133 is opened, the umbrella 139 and the cylinder 140 are projected downward by the spring 145. As a result, the umbrella portion 139 is located closer to the opening of the lower surface of the outer cylinder 128 when the bottom lid 133 is open than when the bottom lid 133 is closed. The sliding of the umbrella portion 139 pushes the collected dust downward.

When the bottom lid 133 is closed after the dust is discarded, the bottom surface 140a of the tubular body 140 protruding downward and the recessed portion 170 provided at the center of the bottom lid 133 come into contact with each other, and the umbrella portion 139 and the tubular body 140 are pushed upward. Since the bottom surface 140a of the tubular body 140 and the recessed portion 170 are in contact with each other in a spherical shape, the contact area between the bottom surface 140a of the tubular body 140 and the recessed portion 170 is constant even if the angle of the bottom lid 133 is changed by the operation of closing the bottom lid 133. Since it can be maintained and a force is always applied in the vertical direction by bringing the curved surfaces into contact with each other, the umbrella portion 139 can be smoothly accommodated in the lower cylinder 129b. When the bottom lid 133 is contacted with a flat surface without providing the recessed portion 170, the direction in which the force is applied is perpendicular to the flat surface, so that the umbrella portion 139 is difficult to return to the vertical direction and the bottom lid 133 is difficult to close. Then, when the bottom lid 133 is closed to a substantially horizontal state, the hooking portion 156 comes into contact with the claw portion 155, and the packing 157 provided on the bottom lid 133 is locked while maintaining airtightness.

In addition, the provision of the mechanism for discharging the dust from the lower side of the dust collector 12 in this manner means that the electric vacuum cleaner 100 (rechargeable electric cleaner) including the main body terminal portion 9 above the dust collector 12 as in the present embodiment. This is effective for a machine, and it is possible to prevent dust from adhering above the dust collector 12 (on the side of the upper lid 132).

Next, the shape and structure of the introduction pipe 160, which is the upstream side of the dust collecting device 12 and which guides air containing dust to the dust collecting device 12, and the air flow will be described.
<Introduction pipe 160>
The stick-type/handy-type vacuum cleaner 100 of the present embodiment is a flow path from the suction port 15 at the tip of the cleaner body 1 to the inflow port 149 of the dust collector 12 (outer cylinder 128). An introduction pipe 160 is provided. FIG. 23 shows only the introduction pipe 160 and the dust collecting device 12 with each component omitted from the state where the dust collecting device 12 is attached to the cleaner body 1 shown in FIG. FIG. 24 is a front view of FIG. 23, and FIG. 25 is a sectional view taken along line FF shown in FIG.

The introduction pipe 160 is open at the top and bottom, and is provided with the above-described suction port 15 at the bottom and the introduction pipe outlet 161 at the top, which is fluidly connected to the inlet 149 of the dust collector 12 (outer cylinder 128). The suction body 3 and the like are connected to the lower suction port 15.

Further, the introduction pipe 160 is provided on the side surface of the dust collector 12. The central axis (d) of the dust collector 12 shown in FIG. 24 is collinear (substantially parallel) with the central axis (not shown) of the cleaner body 1 when viewed from above. Further, as described above, the dust collector 12 is attached to the rear of the cleaner body 1. The central axis (e) of the straight portion (the straight piping 160a) of the introduction pipe 160 is substantially parallel to the central axis (d) of the dust collector 12. The straight pipe 160a 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 is bent in a direction toward the center of the bottom cover 133 so as to avoid the bottom cover 133. Further, a straight pipe 160b extending further downward is provided. The central axis (he) of the straight pipe 160b is located on the same line as the central axis (d) of the dust collector 12 when viewed from above. In other words, the introduction pipe 160 has a pipe shape in which the center axis of the straight pipe 160a and the center axis (f-axis) of the straight pipe 160b having the suction port 102 are substantially parallel to each other and the straight pipes are connected obliquely downward. The angle of inclination of the diagonal pipe 160c that connects both straight pipes diagonally downward differs depending on the position of the suction port 15, but the position (range) of the suction port 15 is located within the bottom surface of the dust collector 12 (within the outer diameter of the bottom lid 133). It is shaped like this. Further, the introduction pipe 160 is accommodated in the introduction pipe case portion 14 of the cleaner body 1, and the introduction pipe case portion 14 has a shape that bulges to the left side of the pipe case portion 4 when viewed from the front (shown in FIG. 1). Right side).

The introduction pipe outlet 161 connected to the inflow port 149 of the dust collecting device 12 is provided with a packing 162, and when the dust collecting device 12 is attached to the cleaner body 1, the packing 162 and the inflow port 149 are pressed to maintain airtightness. To do. The packing 162 is made of a rubber member, a non-breathable sponge-like member, an elastomeric material, or the like, and is molded so as to be integrated with the inlet pipe outlet 161 (secondary molding) or the inlet pipe outlet 161 and the inlet pipe case. The airtightness of the introduction pipe outlet 161 and the packing 162 is maintained by sandwiching and fixing it between the portion 14 and the portion 14. The packing 162 may be provided at the inflow port 149 of the dust collector 12 instead of the inlet pipe outlet 161, but when the dust collector 12 is washable, the packing 162 is a separate component. Since there is a risk of forgetting to attach it, it is preferable to provide it at the introduction pipe outlet 161 as described above.

As in the present embodiment, the flow of air containing dust caused by bending the introducing pipe 160 is shown in FIGS. 24, 25 and 26. Reference numeral 170 shown in the drawing indicates dust, and the flow of air is indicated by an arrow A. The air sucked from the suction port 15 flows along the shape of the introduction pipe 160 as indicated by arrow A. At this time, the dust 170, which is denser and heavier than air, is pushed by the diagonal pipe 160c to the right side of the inner wall surface of the linear pipe 160a by the inertial force 180, and is conveyed to the dust collector 12 along the right side of the inner wall surface. .. The right side of the inner wall surface of the straight pipe 160a is connected to the right side of the inner wall surface of the inflow port 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 straight pipe 160a is centrifugally separated because it swirls in the vicinity of the inner wall surface of the outer cylinder 128 which is the farthest from the outer circumference of the inner cylinder 129 which is the outer diameter side of the dust separating portion 134. Performance is improved. Further, from the view seen from the suction port 15 side (downward) shown in FIG. 25 or FIG. 26, since the straight pipe 160a is located in front of the straight pipe 160b having the suction port 15, similar to the flow described above. Since the dust 170 is conveyed to the front side of the inner wall surface of the straight pipe 160a by the inertial force 180, the dust 170 is conveyed from above the inflow port 149 provided in the outer cylinder 128. As a result, the height direction of the inflow port 149 can be effectively used, and thus the height of the dust separating portion 134 can be effectively used. The higher the dust separation unit 134 is (the longer it is in the vertical direction), the higher the centrifugal separation performance of dust is. Therefore, the electric vacuum cleaner 100 having the dust collecting device 12 that ensures the centrifugal separation performance while suppressing the height of the dust separating portion 134 (while making it compact) by using the bent introduction pipe 160 as in the present embodiment example. Can be provided.

Providing the bent portion in the introduction pipe 160 also leads to downsizing of the cleaner body 1. For example, in the case of cleaning the sofa or the bottom of the bed in the stick type, the operation is such that the cleaner body 1 is brought close to the floor surface and the suction body 3 is inserted into a narrow gap between the upper and lower sides. At this time, for example, in the shape in which the introduction pipe 160 extends straight as in Japanese Patent Laid-Open No. 2002-85297, the dust collector 12 hits the floor. I can't get close to the face. Therefore, by bending the introduction pipe 160 as in the present embodiment, the front-rear length of the cleaner body 1 can be shortened, and the compact electric vacuum cleaner 100 can be provided. As a method of shortening the front-rear length of the cleaner body 1, it is possible to reduce the diameter of the dust collector 12 to bring the introduction pipe 160 close to the floor without making it too long. If it is reduced, the dust separation performance, the amount of dust collection, and even the pressure loss may deteriorate. By bending the introduction pipe 160 as in this embodiment, the dust separation performance can be improved, the dust collection device 12 can collect a large amount of dust, and the pressure loss can be low, and the vacuum cleaner can be compact. 100 can be provided.

Further, even when the introduction pipe 160 has a straight shape, unlike the vacuum cleaner 100 of the present embodiment, the dust collector 12 is provided in front of the cleaner main body 1 (rear front of the pipe case portion 4). It is possible to bring the above-described vacuum cleaner body 1 close to the floor surface and insert the three suction ports into the narrow gap (see JP 2004-24887 A). However, if the dust collector 12 is provided in front of the cleaner body 1, the inflow port 149 of the dust collector 12 faces rearward, so that the cleaner body 1 is cleaned near the floor surface or in a handy state. When the operation of the cleaner body 1 is stopped such that the upper part (on the side of the dust collecting filter 130) of the dust collector 12 faces downward, and the operation is stopped, dust may remain in the introduction pipe 160. In order to solve this, it is conceivable to provide a check valve at the inflow port 149, but there is a possibility that the check valve may increase pressure loss and dust may get caught in the check valve. Therefore, by providing the dust collecting device 12 at the rear of the cleaner body 1 and bending the introduction pipe 160 as in this embodiment, it is difficult for dust to remain on the inlet 149 side even in various cleaning postures. Therefore, it is possible to provide a compact electric vacuum cleaner 100 that suppresses an increase in pressure loss due to the provision of the check valve and the like, and prevents dust from being caught in the check valve.

As described above, when the cleaner body 1 is viewed from the front, the introduction pipe case portion 14 has a shape that bulges to the left side of the pipe case portion 4 (right side of the pipe case portion in FIG. 1 and the like). FIG. 27 shows a sectional view taken along line GG of the cleaner body 1 shown in FIG. As shown in the figure, the central axes of the dust collector 12 and the cleaner body 1 are substantially parallel (on the same line), but the axis of the straight pipe 160a of the introduction pipe 160 is not on the same line. In this way, the introduction tube 160 is displaced from the cleaner body 1 (dust collector 12) in the left-right direction so as to be asymmetrical (asymmetrical), so that the cleaner body 1 is less likely to hit the user's body. 29 and 30 show the electric vacuum cleaner 100 viewed from the front. FIG. 29 shows the electric vacuum cleaner 100 in a state where the expansion pipe 5 is extended and the handle 2 is not rotated. FIG. 30 shows the electric vacuum cleaner 100 in a state in which the telescopic pipe 5 is contracted and the handle 2 is rotated. Further, the introduction pipe case portion 14 of the case main body 50 is shaped to follow the shape of the introduction pipe 160, so that the weight of the cleaner main body 1 can be reduced by reducing the weight of the case main body 50. As a result, the appearance of the cleaner body 1 can be made smaller than that of the cleaner body 1 which is symmetrical. In other words, when the cleaner body 1 is viewed from the front, the case body 50 bulges to the left by the amount of the introduction tube case portion 14, and the case body 50 has a left-right asymmetrical shape. That is, the vacuum cleaner 100 as a whole has a left-right asymmetrical shape.

Further, when the introduction pipe 160 is arranged on the left side when viewed from the front as in the present embodiment, the left side of the cleaner body 1 has few protrusions, which is easy for a right-handed user to use and the introduction pipe 160 on the right side. If it is arranged, it becomes easier for left-handed users to use. Since switching between the right side and the left side is required only by exchanging the outer cylinder 128, the introduction pipe 160, and the introduction pipe case portion 14, it is possible to provide the electric vacuum cleaner 100 that realizes a universal design with few parts exchanges.
<Air flow during dust suction>
As shown in FIG. 28, the air flow in the state where the dust collecting device 12 in which the outer cylinder 128, the inner cylinder 129, the dust collecting filter 130, the upper lid 132, and the bottom lid 133 are attached to the cleaner body 1 is shown in FIG. It will be explained using. FIG. 28 shows the air flow in the handy state, but the air flow in the stick type is omitted because the same is true in the stick type state.

When the user starts driving with the operation button 11b provided on the handle 2, the electric blower 17 is driven to suck in air. The sucked air flows from the suction port 15 of the introduction pipe 160, the introduction pipe outlet 161, and the inflow port 149 into the dust collector 12 (flow 200). At this time, due to the bent portion of the introduction pipe 160, the dust is carried into the dust collector 12 while being pushed to the left side of the inner wall surface of the introduction pipe 160 from the substantially tangential direction of the outer cylinder 128. The air containing dust that has flowed in turns into a swirling flow, centrifugal force acts on the dust, and the dust and air are separated (flow 201). That is, the dust separating unit 134 separates dust from air. Most of the separated air flows into the inner cylinder 129 through the intake port 129c provided in the upper cylinder 129a (flow 202). Then, the air passes through the dust collecting filter 130, passes through the upper opening of the upper lid 132, and reaches the electric blower 17 (flow 203). At this time, the fine dust that has passed through the mesh member 136 of the intake port 129c is collected by the dust collecting filter 130.

On the other hand, the dust separated by the centrifugal force passes between the outer cylinder 128 and the lower cylinder 129b due to 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, the dust swirls in the dust container 135 (flow 204). Then, when the vacuum cleaner is continuously used, the dust is gradually accumulated and the dust accommodating portion 135 becomes full, and it is time to dispose of the dust. The air flowing into the dust container 135 flows from the vicinity of the outer periphery of the lower cylinder 129b to the upper cylinder 129a side along the shape of the space 139a of the cylindrical body 140 and the umbrella 139 (flow 205). The depth of the umbrella portion 139 is required to suppress the return of dust to the upper cylinder 129a side due to this air flow. In the present embodiment, since the lower cylinder 129b is provided with the sliding mechanism for pushing out dust, the umbrella portion 139 is provided with a sufficient depth. Further, the dust return prevention surface 151 provided on the upper end of the tapered portion of the outer cylinder 128 further suppresses the return of dust to the upper cylinder 129a side.

When the dust container 135 is filled with dust, the dust is discarded. The dust discharge mechanism is as described above, and even when the amount of sucked dust is small, the sliding mechanism of the umbrella portion 139 and the outer cylinder 128 are omitted. Due to the conical shape, dust can be discharged.

As described above, according to the electric vacuum cleaner having the cyclone type dust collecting device which can be used as the stick type or the handy type as shown in the embodiment, and has the suction force, It is possible to provide an easy-to-use electric vacuum cleaner having both strength.

1 Vacuum Cleaner Main Body 2 Handle 3 Suction Body 4 Pipe Case 5 Telescopic Pipe 6 Charging Stand 7 Motor Case 8 Storage Battery Case 9 Main Unit Terminal 10 Telescopic Buttons 11a, 11b Operation Button 12 Dust Collecting Device 13 Suction Body Attachment/Detachment Button 14 Inlet Pipe Case Section 15 Suction Port 17 Electric Blower 18 Storage Battery 20 Tip Brush 24 Handle Support Shaft 25 Charging Stand Base 26 Charging Stand Stand 28 Charging Stand Terminal 29 Main Body Fixing Protrusion 30 Applied Suction Body 32 Applied Suction Body Fixing Protrusion 50 Case Main Body 101 Handle Fixing Clamp 106 Exhaust port 108 Handle clamp spring 109 Electric blower fixed case 110 Main body substrate 111 Main body LED
112 Airtight surface 113 Suction part 115 Protective cover 116 Vibration-proof airtight rubber 117 Dust collector fixing protrusion 118 Dust collector fixing hole 119 D lock button 120 D lock button spring 128 Outer cylinder 128a Filter case receiving part 128b, 131b Inside flange part 129 Tube 129a Upper cylinder 129b Lower cylinder 129c Intake portion 129d Stopper receiving portion 129e Bottom surface 130 Dust collecting filter 130a Collar portion 130b, 130c, 137, 148, 157, 162 Packing 131 Filter case 131a Opening 132 Upper lid 132a Airtight surface 133 Bottom lid 134 Dust separating part 135 Dust accommodating part 136 Mesh member 138 Space 139 Umbrella part 139a Space 139a Upper surface 139b Rib 140 Cylindrical body 140a Bottom surface 141 Spring case 141a Spring seat 141b Spring shaft 141c Notch 142 Piston part 143 Stopper 144 Screw 145 Spring 146 Collar part Filter member 149 Inlet port 149a Inlet port outer wall surface 150 Lid locking mechanism 151 Dust return prevention surface 152 Circular rib 153 Lid lock cover 154 Button 155 Claw portion 156 Engagement portion 158 Hinge portion 158a Rotating shaft 159 Recessed portion 170 Recessed portion 160 Inlet pipe 160a , 160b Straight pipe 160c Diagonal pipe 161 Inlet pipe outlet 170 Dust 180 Inertial force 200, 201, 202, 203, 204, 205 Flow

Claims (3)

A cleaner main body having an electric blower and a suction port, and a dust collector detachable from the cleaner main body,
The dust collecting device includes an outer cylinder having a substantially cylindrical portion, and a substantially cylindrical inner cylinder contained in the outer cylinder,
The inner cylinder is arranged substantially concentrically with the substantially cylindrical portion of the outer cylinder,
The outer cylinder is formed on a side portion of the substantially cylindrical portion so as to be connected to the substantially cylindrical portion outside the outer diameter of the cylindrical portion of the outer cylinder by a substantially tangent line. Equipped with an inlet having
The inflow port communicates with one end of an introduction pipe which is enclosed in the cleaner body and has both ends open.
The other end of the introduction pipe is provided with the suction port,
The introduction pipe is located on the side of the dust collector ,
Surface including the opening of the pre-Symbol inlet port, vacuum cleaner, characterized in that across the substantially cylindrical portion.
The vacuum cleaner according to claim 1,
The introduction pipe includes a bent portion, the bent portion is provided at both ends with a stretching portion that extends in the vertical direction, the central axis of the stretching portion and the central axis of the dust collecting device are provided substantially parallel to each other, and An electric vacuum cleaner, wherein an upper part is arranged on a side part of the dust collecting device, and a central axis of a lower part of the extending part is located on the same line as a central axis of the dust collecting device when viewed from above. A vacuum cleaner body having an electric blower and an introduction pipe, and a dust collector detachable from the vacuum cleaner body,
The dust collecting device includes an outer cylinder having a substantially cylindrical portion, and a substantially cylindrical inner cylinder contained in the outer cylinder,
The inner cylinder is arranged substantially concentrically with the substantially cylindrical portion of the outer cylinder, and the outer cylinder is provided with an inflow port on a side portion,
The introduction pipe has one end communicating with the inflow port protruding toward the inflow port, and the other end having the suction port.
The introduction pipe is located on the side of the dust collector,
Seen from above, the inflow port is not located on the axis of the introduction pipe provided with the suction port,
The vacuum cleaner is characterized in that a surface including the opening of the inlet crosses the substantially cylindrical portion.