TWI637717B - Dust collecting device - Google Patents

Abstract

The dust collecting device is a body having a suction port for attracting dust; an electric blower that generates a wind; a dust collecting chamber for accommodating dust attracted from the suction port; and a direction extending from the suction port to the inside of the body. The internal flow path formed by the conduit and the passage. The duct is formed in a shape in which the cross-sectional area gradually becomes smaller by the passage of the suction port toward the inside of the body. Thereby, an efficient dust collecting device that transports dust to the dust collecting chamber can be realized.

Description

Dust collecting device Field of invention

The present invention relates to a dust collecting device.

Background of the invention

As a tool for sweeping the floor, a wide variety of devices or tools are commercially available. For example, there is a sweeper or a mop for sweeping the ground. The above sweeper allows the nozzle connected to the front end of the hose to slide on the ground. Then, the dust adhering to the ground is sucked by the nozzle, and the paper bag or the like which collects dust inside the body through the hose is used to sweep the ground.

In addition, Japanese Unexamined Patent Publication No. 2012-245318 (hereinafter referred to as Patent Document 1) is disclosed in Japanese Laid-Open Patent Publication No. 2012-245318.

The sweeper described in Patent Document 1 is provided with a deep portion for accommodating the dust collecting bag at the lower portion of the storage box. On the front side of the deep portion, a box front member having a suction opening portion that is detachably held is disposed. The dust bag is held at the inner upper portion of the suction opening. Further, a suction device for holding a blower or the like is disposed on the upper portion of the deep portion, and the suction device is connected to the suction opening portion. Further, a tooth-shaped member composed of a shaft body having different lengths is provided in the suction opening portion. Furthermore, on the deep side of the dentate member, rubber is fixed An elastic plate made of a soft material. Further, it is configured to remove the dust adhering to the mop by pressing the pile of the mop or the like against the dent portion, and pass through the suction opening to collect the dust in the dust collecting bag.

Summary of invention

However, the sweeper described in Patent Document 1 is configured such that the suction path from the suction opening portion to the dust collecting bag is short and stands up in the vertical direction. Therefore, it is difficult to collect dust from heavy stones such as small stones. In particular, when the dust collecting bag is clogged, there is a problem that the dust collecting performance is extremely lowered. Moreover, since the area of the suction opening is small, a vortex is generated in the front side of the dust bag, and noise is generated.

The present invention provides a dust collecting device that simply removes dust attached to a mop or the like and suppresses noise when dust is removed.

That is, the dust collecting device of the present invention has a main body having a suction port for attracting dust; an electric blower that generates suction air; a dust collecting chamber for accommodating dust attracted from the suction port; and An internal flow path formed by a conduit and a passage extending in the inner direction of the body. Then, the duct is formed in a shape in which the cross-sectional area gradually becomes smaller by the passage of the suction port toward the inside of the body. Thereby, the dust can be efficiently transported to the dust collecting chamber. Further, it is also possible to realize a dust collecting device which can easily collect dust such as small stones and the like.

1‧‧‧ Ontology

2‧‧‧ attracting mouth

3‧‧‧dust room

4‧‧‧Hose

4a‧‧‧ front end

5‧‧‧Power button

6‧‧‧Handle

7‧‧‧Bevel

8‧‧‧Hands

9‧‧‧Exhaust port

10‧‧‧Power plug

11‧‧‧Electric blower

12‧‧‧ dust bag

13‧‧‧ openings

14‧‧‧ catheter

14a‧‧‧上壁

14b‧‧‧ side

15‧‧‧ pathway

16‧‧‧Internal flow path

17‧‧‧ openings

18‧‧‧ hole

18a, 18b‧‧ holes

19‧‧‧Filter

20‧‧‧ cover

21‧‧‧ recess

Fig. 1 is a perspective view of a dust collecting device according to an embodiment of the present invention.

Fig. 2 is a side view of the dust collecting device of the same embodiment.

Fig. 3 is a rear elevational view of the dust collecting device of the same embodiment.

Fig. 4 is a schematic view showing a state in which the dust collecting device of the same embodiment is cut at the center.

Fig. 5 is an exploded perspective view showing a duct and a passage which constitute an internal flow path of the dust collecting device of the embodiment.

Fig. 6 is a partial plan view showing the shape and arrangement of the holes of the dust collecting device of the same embodiment.

Fig. 7 is a partial plan view showing the shape and arrangement of the holes of the dust collecting device of the same embodiment.

Fig. 8 is a partial plan view showing the shape and arrangement of the holes of the dust collecting device of the same embodiment.

Detailed description of the preferred embodiment

Hereinafter, embodiments of the present invention will be described with reference to the drawings. Further, the present invention is not limited to the embodiments described below.

(embodiment)

Hereinafter, a dust collecting device according to an embodiment of the present invention will be described with reference to Figs. 1 to 3 .

Fig. 1 is a perspective view of a dust collecting device according to an embodiment of the present invention. Fig. 2 is a side view of the dust collecting device of the same embodiment. Fig. 3 is a rear elevational view of the dust collecting device of the same embodiment.

As shown in FIGS. 1 to 3, the dust collecting device of the present embodiment is housed in the dust collecting chamber 3 of the main body 1 and detachably connected to the main body 1. The hose 4 is constructed.

The main body 1 is provided with a suction port 2 that opens toward the front on the lower side of the front surface for sucking dust. The dust collecting chamber 3 is provided above the suction port 2 and can be pulled out from the front side of the body 1. Then, by pulling the dust collecting chamber 3, the user can take out the dust collected inside the main body 1 and discard it. Moreover, the dust collecting chamber 3 is configured, for example, to provide a dust collecting bag 12 (refer to FIG. 4), and collect dust in the dust collecting bag.

The hose 4 is rotatably mounted above the dust collecting chamber 3, with a substantially central portion (including a central portion) above the body 1. Further, the hose 4 is formed of a soft material such as an elastomer, rubber, or polyvinyl chloride (PVC), and is configured to be freely stretchable or bendable.

Moreover, the power button 5 shown in FIG. 1 is disposed on the upper surface of the body 1. When the user presses the power button 5, the dust collecting device starts and stops the operation of attracting dust.

Further, as shown in FIG. 2, a handle 8 is integrally provided at the front end of the hose 4. The user can easily attach and detach the hose 4 from the body 1 by holding the handle 8 of the hose 4.

On the back side of the upper portion of the main body 1 (the upper rear side of the main body 1), for example, a curved inclined surface 7 is formed toward the rear of the main body 1.

The handle 6 is connected to the upper surface of the body 1 at one end side (specifically, the connecting portion of the upper portion of the inclined surface 7 and the upper portion, and is the rear portion of the upper surface), and the other end side is connected to the inclined surface 7 (specifically, The lower part of the slope 7). The outer circumference of the grip 6 is formed in a curved shape of, for example, an inverted U shape from one end side to the other end side. Thereby, the hose 4 is in the shape of a curved surface along the grip 6, On the other hand, when the main body 1 (see FIG. 2) is viewed from the side, it is approximately U-shaped (including an inverted U-shape), and is disposed on the main body 1.

Further, between the grip 6 and the inclined surface 7, a space of an approximately inverted triangle (including an inverted triangle) is formed. Thereby, the user can easily move the dust collecting device while holding the grip 6.

Moreover, as shown in FIG. 3, for example, the exhaust port 9 is formed in the left-right side surface of the main body 1. The exhaust port 9 disperses the exhaust gas discharged from the main body 1 toward the left and right rear of the main body 1. Further, for example, a power plug 10 is provided below the back side of the main body 1. Then, it is configured such that the user can pull out the power plug 10 and connect the commercial power source.

According to the above, the dust collecting device of the embodiment is constructed.

Hereinafter, the structure and operation of the inside of the dust collecting device in the present embodiment will be described with reference to Fig. 4 . Fig. 4 is a schematic view showing a state in which the dust collecting device of the same embodiment is cut at the center.

As shown in FIG. 4, an electric blower 11 is disposed in the approximate center (including the center) inside the main body 1. Above the electric blower 11, a dust collecting chamber 3 in which the dust collecting bag 12 is housed is disposed, for example. Above the dust collecting chamber 3, an opening portion 13 that is connected to communicate with one end side of the hose 4 is formed. Below the inclined surface 7, a bevel opening portion 17 that is connected to communicate with the other end side of the hose 4 is provided.

Further, an internal flow path 16 including a duct 14 and a passage 15 is provided between the suction port 2 of the main body 1 and the inclined surface opening portion 17. The duct 14 is provided from the suction port 2 below the front surface of the main body 1 to the rear of the dust collecting device. The passage 15 is provided upward from the duct 14 behind the dust collecting device and communicated with the duct 14. Then, the construction city is attracted by the suction wind generated by the electric blower 11 The dust attracted by the mouth 2 can pass through the internal flow path 16.

Further, as described above, the other end side front end 4a of the hose 4 is connected to the opening portion on the side opposite to the suction port 2 side of the internal flow path 16, that is, the inclined surface opening portion 17 provided on the lower side of the inclined surface 7.

As a result, in the state in which the hose 4 is housed in the main body 1 as shown in FIG. 4, the dust sucked by the suction port 2 is collected through the internal flow path 16, the inclined opening portion 17, the hose 4, and the opening portion 13. Dust in the dust bag 12.

On the other hand, the user can also detach the other end side front end 4a of the hose 4 from the slope opening portion 17, and suck dust from the front end 4a of the hose 4. At this time, dust collected by the dust is collected in the dust collecting bag 12 through the hose 4 and the opening portion 13. This corresponds to, for example, a case where the user sucks the dust adhering to the top of the mop to the front end of the hose 4 to collect the dust in the dust collecting bag 12 in the above-described path.

As described above, the operation of the dust collecting device of the present embodiment is performed.

Hereinafter, in the dust collecting device of the present embodiment, a structure for sound-insulating sound generated in the internal flow path will be described with reference to FIG. 4 and FIG.

Fig. 5 is an exploded perspective view showing a duct and a passage which constitute an internal flow path of the dust collecting device of the embodiment.

As shown in FIGS. 4 and 5, the suction port 2 is provided at a lower portion of the body 1 and close to the ground. The width of the suction opening 2 is approximately the same as the width of the front face of the body 1 (including the same) or is formed with a slightly narrow width.

Further, the duct 14 is provided from the suction port 2 to the inside of the body 1. As shown in FIG. 4, the duct 14 is configured to be lifted upward, for example, gently from the inside of the body 1, that is, from the front of the body 1 toward the rear. At this time, the guide The tube 14 is provided in a shape in which the cross-sectional area gradually decreases as it goes from the suction port 2 side toward the passage 15 connected to the duct 14. Thereby, the duct 14 and the passage 15 are connected to ensure airtightness. Here, the cross-sectional area is small, and specifically, it corresponds to a case where the width of the catheter 14 is narrowed.

In addition, the above-mentioned "direction toward the inside of the main body 1" is not limited to the rear side of the main body 1 from the suction port 2 as shown in Fig. 4 . For example, when the duct 14 is formed from the suction port 2 into the body 1, it is not limited to where the duct 14 continues or what the length of the duct 14 is.

That is, although not shown correctly in FIG. 5, when viewed from above, the duct 14 is formed, for example, in a substantially flared shape (including a flared shape). Thereby, a shape in which the cross-sectional area is gradually narrowed from the inlet (the suction port 2 side) of the duct 14 toward the outlet (for example, the side connected to the passage 15) is realized. Further, in the above description, the approximately flared shape is taken as an example, but the approximate flared shape is an example thereof, and is not particularly limited to this shape. For example, the side surface 14b of the duct 14 as shown in FIG. 5 may have a curved shape and a shape in which the cross-sectional area is gradually narrowed.

According to the configuration of the above-described duct 14, as the depth from the inlet of the suction port 2 to the depth of the duct 14 (for example, the side connected to the passage 15), the vacuum pressure (attraction force) gradually rises. As a result, dust such as small stones having a large mass can be smoothly sucked and collected.

Further, a plurality of holes 18 are formed in the upper wall 14a of the inner space of the duct 14 as shown in FIG. Further, a wall surface is formed so as to surround the upper wall 14a of the duct 14 so as to surround the hole 18, and a recess 21 having a shape of a substantially trapezoidal shape (including a trapezoid) as shown in Fig. 5 is formed. A filter 19 having a shape of a substantially trapezoidal shape (including a ladder) is embedded in the recess 21. Furthermore, the cover 20 is provided to cover The recess 21 is covered and the filter 19 is housed.

Further, the filter 19 is mainly composed of a material having a high density such as a nonwoven fabric or a urethane foam. In this case, it is preferable to use a material having a high density, but it is also possible to combine a material having a high density with a material having a relatively large density to constitute a filter. At this time, it is preferable to set the material having a high density at a position opposed to the hole 18. Thereby, the noise cancellation effect by the filter 19 can be improved.

Hereinafter, the specific description will be made regarding the noise cancellation effect by the above configuration.

That is, when the air is sucked in, the air rubs against the end surface of the suction port 2 or the rib portion provided on the end surface to generate noise in a high frequency range. The generated noise is absorbed into the filter 19 from the hole 18 provided in the upper wall 14a of the duct 14. The noise absorbed by the holes 18 diffuses as it passes through the filter 19. Thereby, the energy of the sound is reduced. As a result, the harsh noise is reduced by the filter 19.

Further, the silencing effect of the above configuration is increased in proportion to the size of the opening area of the hole 18. That is, the larger the opening area of the hole 18, the greater the effect can be obtained. Furthermore, the larger the volume of the filter 19, the greater the noise reduction effect. Therefore, by increasing the opening area of the hole 18 and the volume of the recess 21, a large noise cancellation effect can be obtained.

Hereinafter, in the dust collecting device of the present embodiment, three specific examples will be described with reference to FIGS. 6 to 8 in the specific structure for reducing noise.

Fig. 6 is a partial plan view showing the shape and arrangement of the holes of the dust collecting device of the same embodiment. Fig. 7 is a partial plan view showing the shape and arrangement of the holes of the dust collecting device of the same embodiment. Fig. 8 is a partial plan view showing the shape and arrangement of the holes of the dust collecting device of the same embodiment.

First, as shown in FIG. 6, the first example is a structure in which holes 18 of uniform size are arranged vertically and horizontally. At this time, the hole 18 is preferably, for example, about 0.5 mm to 10 mm in diameter. This is because if the diameter of the hole 18 is larger than φ10 mm, the sound passing through the hole 18 is increased, and the sound absorbing effect at the portion where the hole 18 is not opened is reduced. However, it is preferable to provide a small hole 18 as much as possible to ensure a larger opening area. Thereby, compared with the case where the holes 18 are arranged irregularly, a large opening area can be secured, and the noise cancellation effect can be improved.

Next, the second example is a structure in which a plurality of holes 18 are arranged in a staggered arrangement as shown in FIG. Specifically, the plurality of holes 18 are formed by a plurality of rows and a plurality of rows, and the positions of the odd rows and the even rows or the odd columns and the even rows of the holes 18 are arranged to be shifted from each other. Thereby, even if the hole 18 is as large as the first example, the number of the holes 18 can be increased. As a result, a larger opening area can be secured, and a high noise reduction effect can be obtained.

Further, in the third example, as shown in FIG. 8, a plurality of holes 18 are arranged in a plurality of holes 18a and 18b having different opening areas. At this time, the difference in the opening area of the large-sized hole 18 is small, and the hole 18b having a small opening area is disposed on the side of the hole 18a having a large opening area. Thereby, a large opening area can be obtained. Further, in the case where the difference in the opening area of the large-sized holes 18 is large, for example, a plurality of holes 18b having a small opening area may be disposed on the side of the hole 18a having a large opening area.

Further, in the present embodiment, the hole 18 formed in the upper wall 14a of the duct 14 is provided in a large number of inlet portions on the side of the suction port 2, and becomes smaller as it enters the depth. This is because, as mentioned above, since the duct 14 is set to be approximately a speaker Due to the shape of the shape. Thereby, it is possible to obtain an effect of gradually reducing the energy of the sound as it enters the depth of the duct 14 after the entrance portion of the duct 14 absorbs the noise in the high frequency range.

As described above, the dust collecting device of the present invention has a body having a suction port for attracting dust; an electric blower that generates suction wind; a dust collecting chamber for accommodating dust attracted from the suction port; and An internal flow path formed by a conduit and a passage extending from the suction port toward the inside of the body. Further, the duct is formed in a shape in which the cross-sectional area gradually becomes smaller by the passage of the suction port toward the inside of the body. Thereby, the dust can be efficiently transported to the dust collecting chamber. Further, it is also possible to realize a dust collecting device which can easily collect dust such as small stones and the like.

Further, in the dust collecting device of the present invention, a plurality of holes may be formed in the upper wall of the duct, and a filter for absorbing sound may be disposed above the plurality of holes. Thereby, the noise generated in the duct can be diffused into the filter through the hole. As a result, noise in a high frequency range can be effectively reduced.

Further, in the dust collecting device of the present invention, a recess for arranging the filter is formed above the plurality of holes, and a cover for covering the filter may be further provided in the recess. Thereby, the filter can be stably supported, and noise in a high frequency range is sealed in the concave portion, thereby reducing noise.

Moreover, the dust collecting device of the present invention may be configured such that the duct is gradually inclined upward toward the upper side of the main body. Thereby, the flow of the suction wind is smooth, and the dust can be efficiently transported to the dust collecting chamber. As a result, dust of a large mass such as small stones can be easily collected.

Moreover, the dust collecting device of the present invention may also be directed to the filter. The internal direction of the body is formed by gradually reducing the cross-sectional area. Thereby, the closer to the inside of the main body, the greater the attraction force, and the dust can be efficiently transported to the dust collecting chamber.

Further, in the dust collecting device of the present invention, a plurality of holes may be arranged in a vertical and horizontal direction and provided on the upper wall of the duct. Thereby, a larger hole area can be obtained. As a result, noise can be effectively reduced.

Further, in the dust collecting device of the present invention, a plurality of holes may be provided in a staggered arrangement on the upper wall of the duct. Thereby, a larger opening area can be ensured. As a result, noise can be reduced more effectively.

Moreover, the dust collecting device of the present invention may be provided with a plurality of holes having different opening areas on the upper wall of the duct. Thereby, a larger opening area can be ensured. As a result, the noise reduction effect can be further enhanced.

Claims (7)

A dust collecting device comprising: a body, a suction port for attracting dust; an electric blower to generate suction air; a dust collecting chamber for accommodating dust sucked from the suction port; and an internal flow path from the suction port a duct and a passage extending to the rear of the dust collecting device, wherein the duct is formed in a shape in which the cross-sectional area is gradually reduced by the passage of the suction port toward the inside of the main body, and the duct is formed on the upper wall of the duct. A plurality of holes are formed, and a filter for absorbing sound is disposed above the plurality of holes, and the passage is provided to face upward from a portion of the duct opposite to the suction port side to communicate with the conduit. The dust collecting device of claim 1, wherein a recess for arranging the filter is formed above the plurality of holes, and a cover for covering the filter is further provided in the recess. The dust collecting device according to claim 1, wherein the duct is formed in a shape that gradually inclines upward as the passage in the direction of the inside of the body. The dust collecting device of claim 1, wherein the filter is configured to have a shape in which a cross-sectional area gradually decreases toward an inner direction of the body. The dust collecting device of claim 1, wherein the plurality of holes are arranged in the vertical and horizontal directions and are disposed on the upper wall of the conduit. The dust collecting device of claim 1, wherein the plurality of holes are disposed in a staggered arrangement on the upper wall of the conduit. The dust collecting device of claim 1, wherein the plurality of holes having different opening areas are provided on the upper wall of the duct.