TW201739402A - Suction nozzle and electric vacuum cleaner including the same - Google Patents

Abstract

A suction nozzle of an electric vacuum cleaner including an electric blower, includes a suction inlet; an outlet; a suction passage extending along a center line joining a middle of the suction inlet in the longitudinal direction and a middle of the outlet in the longitudinal direction to connect the suction inlet and the outlet; and partition walls arranged in the suction passage to extend from the suction inlet side to the outlet side. The suction passage includes a main passage and division passages arranged on both outer sides of the main passage. The main passage and the division passages are divided in the longitudinal direction of the suction inlet by the partition walls. A width of the main passage at the suction inlet measured in the longitudinal direction is arranged to be greater than a width of the main passage at the outlet measured in the longitudinal direction.

Description

Suction nozzle and vacuum cleaner having the same

The present invention relates to a suction nozzle for sucking air and an electric vacuum cleaner having the same.

A conventional vacuum cleaner is disclosed in Japanese Laid-Open Patent Publication No. 2015-70960. The vacuum cleaner includes a casing through which an air intake port and an air exhaust port are opened, and an air passage connecting the intake port and the exhaust port is formed in the casing. An electric blower that generates airflow is disposed in the air passage, and a dust collecting portion that collects garbage such as dust flowing through the air passage is disposed on the upstream side of the electric blower. A pair of left and right wheels are mounted on both sides of the frame. Thereby, the frame can be moved on the floor in the room.

A hose is connected to the suction port of the casing, and a connecting pipe is connected to the upstream end of the hose. A handle and an operation switch are provided on the connecting pipe. The opening and closing of the cleaner and the change in the number of revolutions of the electric blower are performed by operating the switch. An extension tube is attached to the upstream end of the connecting tube. A suction head is detachably attached to the extension pipe at an upstream end of the extension pipe. The suction head includes a housing extending in a direction substantially orthogonal to an extending direction of the extension tube.

A suction opening portion extending in the longitudinal direction of the casing opposite to the floor of the room is opened at the bottom of the casing of the suction head. A substantially circular outflow port that communicates with the extension pipe is opened in an upper portion of the central portion in the longitudinal direction of the casing of the suction head. The suction opening extends across both end portions of the casing in the longitudinal direction, and the outflow port is formed to be narrower than the suction opening in the longitudinal direction of the casing. A suction chamber that connects the suction opening and the outflow port is provided in the casing.

In the vacuum cleaner of the above configuration, when the electric blower is driven by the operation of the operation switch, air containing dust such as dust is sucked into the suction chamber from the suction opening of the suction head. The air sucked into the suction head flows through the suction chamber and flows into the extension pipe through the outflow port. The air that has flowed into the extension pipe flows into the casing through the hose, and the garbage in the air is collected by the dust collecting portion in the casing. Thereby, the ground is cleaned.

However, according to the suction head (suction nozzle) of the conventional vacuum cleaner, the outflow port is opened in the longitudinal direction center part of a housing. Therefore, a part of the airflow sucked from both end portions in the longitudinal direction of the suction opening (suction port) is sharply bent toward the center side immediately after flowing into the suction chamber (suction passage), and is from the longitudinal direction. The airflow drawn in the central part merges. Therefore, there is a problem that turbulence is generated in the suction chamber, and the suction efficiency of the suction head is lowered.

An object of the present invention is to provide a suction nozzle which can improve suction efficiency and a vacuum cleaner including the same.

An exemplary first invention of the present invention is a suction nozzle provided in a vacuum cleaner including an electric blower, the suction nozzle including a suction port extending in a predetermined length direction opposite to a surface to be cleaned, and An outflow port to which the electric blower is connected extends in a center line direction connecting a center of the suction port in the longitudinal direction and a center of the outflow port in the longitudinal direction, and the suction port and the a suction passage connected to the outflow port, and a plurality of partitions provided inside the suction passage and extending from the suction port side toward the outlet port side, the suction passage including: a main passage, utilizing The partition partitions the suction passage in the longitudinal direction of the suction port, the center line of the suction passage is located on the main passage; and a plurality of divided passages interposed The partition plate is located at both outer positions in the longitudinal direction of the main passage; the width of the suction nozzle in the longitudinal direction of the main passage of the suction port is wider than The flow The width of the main passage of the outlet in the length direction.

According to the exemplary first invention of the present invention, it is possible to provide a suction nozzle capable of improving suction efficiency.

According to a second aspect of the present invention, in a vacuum cleaner according to the first aspect of the present invention, a dust collecting portion is disposed downstream of the suction nozzle, and the electric blower is disposed in the dust collecting device Downstream of the ministry.

According to an exemplary second invention of the present invention, a vacuum cleaner including the suction nozzle as described above can be provided.

The above and other features, elements, steps, features and advantages of the present invention will become more apparent from the understanding of the appended claims.

Hereinafter, an exemplary embodiment of the present invention will be described in detail with reference to the drawings. In the present specification, the direction of the floor F (swept surface) close to FIG. 3 is set to "below", and the direction away from the floor F is set to "upper". In the front-rear direction, the direction from the electric blower 7 to the suction port 4 is set to "front", and the direction from the suction port 4 to the electric blower 7 is "rear". A direction parallel to the front-rear direction and parallel to the floor surface F is referred to as "left-right direction (longitudinal direction)". Further, a surface parallel to the front-rear direction and perpendicular to the left-right direction is referred to as a "side surface". Further, "upstream" and "downstream" respectively indicate upstream and downstream in the flow direction of the air taken in from the suction port 4 when the electric blower 7 is driven. In addition, the "suction port 4 is opposed to the floor surface F (swept surface)", except that no other member is disposed between the suction port 4 and the floor surface F, and the suction port 4 and the floor surface F directly face each other, and are also included. Another member (for example, a rotating brush or the like) is disposed between the suction port 4 and the floor F to interpose the state in which the other members face each other.

<First Embodiment> (1. Overall Configuration of Vacuum Cleaner) Hereinafter, a vacuum cleaner 1 according to an exemplary embodiment of the present invention will be described. 1 to 3 are a perspective view, a bottom view, and a side cross-sectional view of the cleaner 1 according to the first embodiment. The vacuum cleaner 1 is a robot-type cleaner, and has a frame 2 having a horizontal cross section (a cross section parallel to the floor surface F) and having a substantially circular shape.

The display unit 15 and the operation unit 16 are provided on the upper surface of the casing 2. The operation unit 16 has a plurality of buttons (not shown). By the operation of the operation unit 16, an instruction of on-off of the cleaner 1 , an instruction to change the number of revolutions of the electric blower 7 to be described later, and an input of conditions such as a cleaning start time of the cleaner 1 can be performed. The display unit 15 includes, for example, a liquid crystal display panel, and displays conditions and the like input via the operation unit 16.

Further, a position sensor (not shown) is provided on the upper surface of the casing 2. By means of the position sensor, the vacuum cleaner 1 can detect the position in the room.

The bottom surface (lower surface) of the casing 2 is provided with a suction port 4 extending in the left-right direction (longitudinal direction A), and an exhaust port 5 extending in the left-right direction is provided at the rear portion of the casing 2. The suction port 4 faces the floor surface F (swept surface) in the room, and the exhaust port 5 faces the upper rear side of the casing 2. A rotating brush (not shown) is provided in the vicinity of the suction port 4 at the bottom of the casing 2. Further, the rotating brush may be disposed in the suction port 4.

An air passage 6 that connects the suction port 4 and the exhaust port 5 is provided inside the casing 2. An electric blower 7 that generates an air flow is disposed in the air passage 6. By the driving of the electric blower 7, the air in the room flows into the air passage 6 from the suction port 4 as indicated by an arrow S, and is sent out from the exhaust port 5 to the room. As the electric blower 7, a centrifugal fan is preferably used, but another type of electric blower such as an axial flow fan may be used.

A dust collecting portion 8 and a filter 9 are disposed in this order from the upstream side to the downstream side in the air flow direction between the suction port 4 in the air passage 6 and the electric blower 7. The dust contained in the air flowing through the air passage 6 is blocked by the filter 9, and is collected in the dust collecting portion 8 formed in a container shape. The dust collecting portion 8 and the filter 9 are detachably attached to the casing 2. The downstream side of the filter 9 of the air passage 6 is formed such that the flow path width (width in the longitudinal direction A) of the intake hole (not shown) toward the electric blower 7 is narrower.

A nozzle-shaped suction nozzle 20 is detachably provided to the casing 2 upstream of the dust collecting portion 8 in the air passage 6. The suction nozzle 20 has a suction port 4 and an outflow port 22 at the upstream end and the downstream end, respectively, and a suction passage 21 that connects the suction port 4 and the outflow port 22 is formed in the suction nozzle 20. The suction port 4 extends in a predetermined longitudinal direction A with respect to the floor surface F (swept surface). The outflow port 22 is connected to the electric blower 7. The width in the longitudinal direction A of the outflow port 22 is formed to be substantially the same as the width in the longitudinal direction A of the suction port 4.

The suction passage 21 extends upward from the suction port 4 and is bent rearward, and is coupled to the upper portion of the dust collecting portion 8 via the outflow port 22 . The upper portion of a portion of the dust collecting portion 8 is covered by the suction nozzle 20. In other words, the suction passage 21 is formed to extend upward from the suction port 4, and is connected to the upper portion of the dust collecting portion 8, and covers the upper portion of a part of the dust collecting portion 8 by the suction nozzle 20. Further, the details of the suction nozzle 20 will be described later.

A pair of left and right drive wheels 19a are provided at right and left end portions of the bottom surface of the casing 2. A driven wheel 19b including a universal wheel is provided at a front end portion of the bottom surface of the casing 2. The drive wheel 19a is coupled to a drive motor (not shown). Thereby, the casing 2 can move on the floor surface F.

Further, the cleaner 1 includes a control unit (not shown) that controls each unit. An electric blower 7, a display unit 15, an operation unit 16, a drive motor, a position sensor, a storage unit, and the like are connected to the control unit. The storage unit stores the control program of the cleaner 1 and stores the conditions and the like input through the operation unit 16.

A power supply unit 11 including a secondary battery or the like is provided in the front portion of the casing 2. The power supply unit 11 supplies electric power to the electric blower 7, the control unit, the drive motor, and the like, and has a frame side contact (not shown) exposed on the bottom surface of the casing 2. The frame side contact is in contact with a charging stand side contact of a charging stand (not shown) connected to a commercial power source (not shown). Thereby, the secondary battery of the power supply unit 11 is charged via the charging stand. Furthermore, the vacuum cleaner 1 is placed on the charging stand before the start of the cleaning operation.

(2. Configuration of Suction Nozzle) FIG. 4 is a perspective view showing the air passage 6 on the suction side including the suction nozzle 20, and FIG. 5 is a front cross-sectional view showing the suction nozzle 20. The suction nozzle 20 includes a suction port 4, an outflow port 22, a suction passage 21, and a plurality of partition plates 25. The suction passage 21 extends in the direction of the center line CT connecting the center of the longitudinal direction A of the suction port 4 and the center of the longitudinal direction A of the outflow port 22, and connects the suction port 4 and the outflow port 22. The upper and lower surfaces of the suction passage 21 are respectively formed by the upper wall 28a and the lower wall 28b, and the left and right surfaces are respectively formed by the side wall 28c and the side wall 28d. The upper wall 28a and the lower wall 28b are inclined so as to be located further upward, and the suction passage 21 is inclined to guide the airflow to the outflow port 22.

A plurality of (two in the present embodiment) separators 25 are arranged side by side in the longitudinal direction A in the suction passage 21. The plurality of partition plates 25 are provided inside the suction passage 21 and extend from the suction port 4 side toward the outflow port 22 side. The partition plate 25 is extended from the suction port 4 to the outflow port 22, and the suction passage 21 is partitioned in the longitudinal direction A, and is divided into a main passage 21a and a plurality of (two in the present embodiment) divided passages 21b and divided. Path 21c. The main passage 21a partitions the suction passage 21 in the longitudinal direction A of the suction port 4 by the partition plate 25, and the center line CT of the suction passage 21 is located on the main passage 21a. The plurality of divided passages 21b and 21b are located at positions on the outer side in the longitudinal direction A of the main passage 21a via the partition plate 25. That is, the main passage 21a is disposed on the center line CT, and the divided passage 21b and the divided passage 21c are disposed on both outer sides in the longitudinal direction A with respect to the main passage 21a.

Further, the suction port 4 is divided into a suction port 4a, a suction port 4b, and a suction port 4c by the partition plate 25. The suction port 4a, the suction port 4b, and the suction port 4c are disposed at the upstream ends of the main passage 21a, the divided passage 21b, and the divided passage 21c, respectively. The suction port 4b and the suction port 4c are close to the suction port 4a.

The partition plate 25 includes, in order from the upstream to the downstream in the air flow direction, the upstream vertical portion 25a, the first curved portion 25b, the second curved portion 25c, and the downstream vertical portion 25d. The upstream side vertical portion 25a is disposed at the upstream end of the partition plate 25, and is formed substantially perpendicular to the longitudinal direction A. That is, at the upstream end, the partition plate 25 includes an upstream side vertical portion 25a that is substantially perpendicular to the longitudinal direction A. The first curved portion 25b is formed continuously to the downstream side of the upstream vertical portion 25a, and is convexly curved toward the side (the outer side in the longitudinal direction A) that is apart from the center line CT. In other words, the partition plate 25 includes a first curved portion 25b that is continuous with the downstream side of the upstream side vertical portion 25a and that is convexly curved toward the side away from the center line CT. The second curved portion 25c is formed continuously to the downstream side of the first curved portion 25b, and is convexly curved toward the side (inward in the longitudinal direction A) close to the center line CT. In other words, the partition plate 25 includes a second bending portion 25c that is continuous with the downstream side of the first curved portion 25b and that is convexly curved toward the side closer to the center line CT. The downstream vertical portion 25d is disposed at a downstream end continuous with the second curved portion 25c, and is formed substantially perpendicular to the longitudinal direction A. In other words, the partition plate 25 has a downstream side vertical portion 25d that is substantially perpendicular to the longitudinal direction A at the downstream end continuous with the second curved portion 25c.

Thereby, the partition plate 25 is disposed on the outer side in the longitudinal direction A with respect to the downstream end, and the width W1 in the longitudinal direction A of the main passage 21a of the suction port 4a is wider than the main passage 21a at the outflow port 22. The width W2 in the length direction A. The width W3 in the longitudinal direction A of the suction port 4b is narrower than the width W4 in the longitudinal direction A of the divided passage 21b of the outflow port 22. The width W5 in the longitudinal direction A of the suction port 4c is narrower than the width W6 in the longitudinal direction A of the divided passage 21c of the outflow port 22.

The width W3 of the suction port 4b is substantially the same as the width W5 of the suction port 4c, and the width W1 of the suction port 4a is formed to be wider than the width W3 of the suction port 4b and the width W5 of the suction port 4c. The width W4 of the divided passage 21b at the outflow port 22 is substantially the same as the width W6 of the divided passage 21c. Further, since the divided passage 21b and the divided passage 21c are widened on the downstream side, the width W4 of the divided passage 21b and the width W6 of the divided passage 21c in the outflow port 22 are close to the width W2 of the main passage 21a. In the present embodiment, the width W2 of the main passage 21a of the outflow port 22, the width W4 of the divided passage 21b, and the width W6 of the divided passage 21c are formed substantially the same. Further, the width W3 of the suction port 4b and the width W5 of the suction port 4c may be different.

Further, the separator 25 is not limited to two, and may be an even number of four or more. At this time, the suction passage 21 is divided into one main passage and four or more even-numbered divided passages.

(3. Cleaning operation of the cleaner) In the vacuum cleaner 1 of the above configuration, when the cleaning start time stored in the storage unit is reached, the casing 2 is separated from the charging station and automatically moved on the floor F. At this time, the electric blower 7 is driven, and the rotating brush rotates. Thereby, the cleaning operation of the cleaner 1 is started. The airflow including the dust on the floor surface F flows into the main passage 21a, the divided passage 21b, and the divided passage 21c via the suction port 4a, the suction port 4b, and the suction port 4c as indicated by an arrow S (see FIG. 5).

At this time, since the partition plate 25 includes the upstream side vertical portion 25a, turbulence in the vicinity of the upstream end of the partition plate 25 is reduced. Thereby, the airflow smoothly flows into the main passage 21a, the divided passage 21b, and the divided passage 21c. The air that has flowed into the main passage 21a, the divided passage 21b, and the divided passage 21c flows in the order of the first curved portion 25b and the second curved portion 25c. Thereby, the air that has flowed into the divided passage 21b and the divided passage 21c is smoothly induced to the center line CT side. Therefore, the turbulence of the air in the divided passage 21b and the divided passage 21c can be reduced, and the air can be smoothly circulated.

Further, since the width W4 of the divided passage 21b of the outflow port 22 and the width W6 of the divided passage 21c are close to the width W2 of the main passage 21a, the equal suction force acts on the main passage 21a, the divided passage 21b, and the divided passage 21c. Therefore, the suction force in the longitudinal direction A of the suction port 4 can be made substantially uniform.

Further, the width W1 of the suction port 4a of the main passage 21a which is less likely to cause turbulence can be formed to be wider than the width W3 of the suction port 4b and the width W5 of the suction port 4c, thereby further improving the suction efficiency of the suction nozzle 20.

Further, since the partition plate 25 includes the downstream side vertical portion 25d, the air that has reached the downstream portion of the main passage 21a, the divided passage 21b, and the divided passage 21c is smoothly guided to the downstream of the outflow port 22.

The airflow flowing through the main passage 21a, the divided passage 21b, and the divided passage 21c flows into the dust collecting portion 8 via the outflow port 22. At this time, the dust D in the air is blocked by the filter 9 and collected in the dust collecting portion 8. The air that has passed through the filter 9 flows through the air passage 6 downstream of the filter 9, and is then sent out to the outside of the casing 2 through the exhaust port 5. Thereby, the ground F is cleaned.

The vacuum cleaner 1 moves the entire floor surface F while driving the electric blower 7, and returns to the charging stand to stop the electric blower 7. Thereby, the cleaning operation of the cleaner 1 is completed.

(4. Simulation of Airflow) FIGS. 6 and 7 are a perspective view and a side view showing a result of simulating the flow of air in the air passage 6 on the suction side. According to these figures, turbulent flow is hardly observed in the main passage 21a, the divided passage 21b, and the divided passage 21c, and the air flows in the laminar flow state in the main passage 21a, the divided passage 21b, and the divided passage 21c. Further, there is no turbulence that is so large that the dust accumulated in the dust collecting portion 8 is scattered again.

As a comparative example, the separator 25 was omitted and the simulation was performed in the same manner. As a result, large turbulence was observed in both ends in the longitudinal direction A in the suction passage 21 and in the dust collecting portion 8.

(5. Simulation of Wind Speed Distribution) FIG. 8 is a side view showing a result of simulation of the wind speed distribution in the air passage 6 on the suction side. The wind speed distribution in the suction passage 21 is approximately uniform at about 25 m/s, and the wind speed distribution in the dust collecting portion 8 is approximately 0.041 m/s and is substantially uniform. On the other hand, in the comparative example, the unevenness of the wind speed in the suction nozzle 20 and the dust collecting portion 8 is large.

(6. Simulation of Wind Pressure Distribution) FIG. 9 is a side view showing a result of simulation of the wind pressure distribution in the air passage 6 on the suction side. According to Fig. 9, the wind pressure distribution in the suction nozzle 20 and in the dust collecting portion 8 is approximately -230 Pa and is substantially uniform. On the other hand, in the comparative example, the unevenness of the wind pressure in the suction nozzle 20 and the dust collecting portion 8 is large.

According to the above results, the turbulent flow in the suction passage 21 and the dust collecting portion 8 can be reduced by the suction nozzle 20 of the present embodiment.

According to the present embodiment, the suction nozzle 20 is provided with a plurality of partition plates 25 that partition the suction passage 21 into the main passage 21a, the divided passage 21b, and the divided passage 21c in the longitudinal direction A of the suction port 4. Thus, even if the air intake side flow path of the electric blower 7 is narrowed, the air flow of the air taken in from the both end portions in the longitudinal direction A of the suction port 4 cannot flow to the center line immediately after flowing into the suction passage 21 The CT side is sharply bent, thereby reducing turbulence of the air.

Further, the width W1 in the longitudinal direction A of the main passage 21a of the suction port 4 is wider than the width W2 in the longitudinal direction A of the main passage 21a of the outflow port 22. Therefore, the width W4 of the divided passage 21b and the width W6 of the divided passage 21c are close to the width W2 of the main passage 21a of the outflow port 22, so that the suction force acting on the divided passage 21b and the divided passage 21c can be increased. Thereby, the suction force of the suction port 4 can be made substantially uniform over the entire longitudinal direction A. Therefore, the suction efficiency of the suction nozzle 20 can be improved.

Further, at the upstream end of the suction passage 21, the partition plate 25 has an upstream vertical portion 25a that is substantially perpendicular to the longitudinal direction A. Thereby, turbulence in the vicinity of the upstream end of the separator 25 can be further reduced.

Further, the partition plate 25 includes a first curved portion 25b that is continuous with the downstream side of the upstream side vertical portion 25a and that is convexly curved toward the side away from the center line CT. Thereby, the air taken in from the suction port 4b and the suction port 4c at both end portions in the longitudinal direction A can smoothly flow in the divided passage 21b and the divided passage 21c.

Further, the partition plate 25 includes a second bending portion 25c that is continuous with the downstream side of the first curved portion 25b and that is convexly curved toward the side closer to the center line CT. Thereby, the air taken in from the suction port 4b and the suction port 4c at both end portions in the longitudinal direction A can be smoothly guided to the downstream portion of the suction passage 21.

Further, the partition plate 25 has a downstream side vertical portion 25d that is substantially perpendicular to the longitudinal direction A at the downstream end continuous with the second curved portion 25c. Thereby, the air flowing through the main passage 21a, the divided passage 21b, and the divided passage 21c can be smoothly guided to the outflow port 22.

Further, the width W1 in the longitudinal direction A of the main passage 21a of the suction port 4 is wider than the width W3 in the longitudinal direction A of the divided passage 21b of the suction port 4, and the width W5 in the longitudinal direction A of the divided passage 21c. By forming the three suction ports as described above, the suction is performed by the division, and turbulence is less likely to occur in the suction nozzle 20, and the suction amount of the suction nozzle 20 can be increased. Further, by forming the narrow divided flow path 21b and the divided flow path 21c on the outer side in the longitudinal direction A of the suction port 4, it is possible to further increase the length direction A of the suction nozzle 20 which is likely to be weakest in the previous suction force. The suction efficiency of the end.

Further, the cleaner 1 includes a suction nozzle 20, a dust collecting portion 8 disposed downstream of the suction nozzle 20, and an electric blower 7 disposed downstream of the dust collecting portion 8. Thereby, the vacuum cleaner 1 in which the suction efficiency and the cleaning efficiency are improved can be easily realized. In addition, since the air flows in the main passage 21a, the divided passage 21b, and the divided passage 21c in a laminar flow state, the suction port 4b at both ends in the longitudinal direction A can be removed without increasing the number of revolutions of the electric blower 7. The suction port 4c smoothly sucks the dust D. Therefore, the turbulent flow in the dust collecting portion 8 can be reduced, and the dust D accumulated in the dust collecting portion 8 can be prevented from scattering again.

Further, the suction passage 21 is formed to extend upward from the suction port 4, and is connected to the upper portion of the dust collecting portion 8, and covers the upper portion of a part of the dust collecting portion 8 by the suction nozzle 20. Thereby, the compactness of the cleaner 1 can be achieved.

In the present embodiment, the second curved portion 25c and the downstream vertical portion 25d may be omitted, and the first curved portion 25b may be formed from the downstream end of the upstream vertical portion 25a to the outflow port 22.

<Second Embodiment> Next, a second embodiment of the present invention will be described. FIG. 10 is a perspective view of an air passage on the suction side of the suction nozzle including the cleaner of the second embodiment. Fig. 11 is a front sectional view showing a suction nozzle of the cleaner of the second embodiment. For the sake of convenience of explanation, the same portions as those in the first embodiment shown in FIGS. 1 to 9 are denoted by the same reference numerals. In the second embodiment, the shape of the separator 25 is different from that of the first embodiment. The other parts are the same as those of the first embodiment.

A plurality of flat plates 25 are arranged in parallel in the longitudinal direction A in the suction passage 21. The partition plate 25 is disposed on a straight line from the suction port 4 side to the outflow port 22 side, and is formed of a flat plate perpendicular to the lower wall 28b. That is, the partition plate 25 has a flat plate shape and is disposed on a straight line from the suction port 4 side to the outflow port 22 side. The two partition plates 25 are arranged to be inclined so as to approach each other from the suction port 4 toward the outflow port 22 in the front view.

According to the present embodiment, the same effects as those of the first embodiment can be obtained. Further, the partition plate 25 has a flat plate shape and is disposed on a straight line from the suction port 4 side to the outlet port 22 side. Thereby, it is possible to easily prevent the airflow flowing in the main passage 21a, the split passage 21b, and the split passage 21c from being separated from the partition plate 25, thereby further reducing the occurrence of turbulence.

<Third Embodiment> Next, a third embodiment of the present invention will be described. FIG. 12 is a perspective view of an air passage on the suction side of the suction nozzle including the cleaner of the third embodiment. Fig. 13 is a front sectional view showing a suction nozzle of the cleaner of the third embodiment. For the sake of convenience of explanation, the same portions as those in the first embodiment shown in FIGS. 1 to 9 are denoted by the same reference numerals. In the third embodiment, the shape of the separator 25 is different from that of the first embodiment. The other parts are the same as those of the first embodiment.

The partition plate 25 has, in order from the upstream to the downstream in the air flow direction, an upstream side vertical portion 25a, a straight portion 25e, and a downstream side vertical portion 25d. Further, unlike the second embodiment, in the third embodiment, the partition plate 25 has a downstream side vertical portion 25d which is substantially perpendicular to the longitudinal direction A at the downstream end. Thereby, the air that has arrived at the downstream portion of the main passage 21a, the divided passage 21b, and the divided passage 21c is smoothly guided to the downstream of the outflow port 22. The straight portion 25e is formed continuously on the upstream end of the downstream end portion of the upstream vertical portion 25a and the upstream side of the vertical portion 25d, and is formed in a straight line.

Also in the present embodiment, the same effects as those of the first embodiment can be obtained. Furthermore, in the present embodiment, the upstream vertical portion 25a or the downstream vertical portion 25d may be omitted.

<Fourth embodiment> Next, a fourth embodiment of the present invention will be described. Fig. 14 is a perspective view of the cleaner according to the fourth embodiment. 15 and FIG. 16 are a front cross-sectional view and a side cross-sectional view of a suction nozzle of the cleaner according to the fourth embodiment. For the sake of convenience of explanation, the same portions as those in the first embodiment shown in FIGS. 1 to 9 are denoted by the same reference numerals. In the fourth embodiment, the difference from the first embodiment is that a vacuum cleaner 30 of a so-called horizontal type is used instead of the robot cleaner 1. The other parts are the same as those of the first embodiment.

The air cleaner 30 is provided with an air intake port 31 and an exhaust port 5 on the front and rear surfaces of the casing 2, respectively. An air passage 6 that connects the intake port 31 and the exhaust port 5 is formed in the casing 2. The dust collecting portion 8, the filter 9, and the electric blower 7 are disposed in this order from the upstream side to the downstream side in the air passage 6. A pair of left and right wheels 39 are attached to the side surface of the casing 2. Further, the vacuum cleaner 30 is provided with a power supply cord (not shown) that can be connected to a commercial power source (not shown).

A hose 32 is connected to the intake port 31 of the casing 2, and a connecting pipe 34 is connected to the upstream end of the hose 32. A grip portion 35 and an operation portion 16 are provided in the connecting tube 34. The opening and closing of the cleaner 30, the change of the number of revolutions of the electric blower 7, and the like are instructed by the operation of the operation unit 16. An extension pipe 33 is attached to the upstream end of the connecting pipe 34. A suction nozzle 20 is detachably attached to the extension pipe 33 at the upstream end of the extension pipe 33.

The suction nozzle 20 has a joint pipe 27 connected to the extension pipe 33 at the rear portion of the casing 26, and an outlet port 22 is opened at the downstream end of the joint pipe 27. The width W7 in the longitudinal direction A of the outflow port 22 is narrower than the width W8 in the longitudinal direction A of the suction port 4. The width of the opening portion 29 of the upstream end of the joint pipe 27 in the longitudinal direction A is formed to be substantially the same as the width W7 of the outflow port 22. Further, the downstream end of the partition plate 25 is disposed in the width W7 of the outflow port 22 in the longitudinal direction A.

In the vacuum cleaner 30 configured as described above, the user inserts a plug of a power cord into a socket (not shown), and operates the operation unit 16 to drive the electric blower 7 . Thereby, the air containing the dust D flows into the main passage 21a, the divided passage 21b, and the divided passage 21c from the suction port 4 of the suction nozzle 20. At this time, since the downstream end of the partition plate 25 is disposed in the width W7 in the longitudinal direction A of the outflow port 22, the air flowing through the main passage 21a, the divided passage 21b, and the divided passage 21c is smoothly guided to the outflow port 22.

The air that has flowed through the main passage 21a, the divided passage 21b, and the divided passage 21c sequentially flows through the extension pipe 33, the connection pipe 34, and the hose 32, and then flows into the casing 2 through the intake port 31. The dust D in the air that has flowed into the casing 2 is collected by the dust collecting portion 8. Thereby, cleaning can be performed on the floor F.

Also in the present embodiment, the same effects as those of the first embodiment can be obtained. Further, the suction efficiency and the cleaning efficiency can be improved in the horizontal cleaner 30.

<Fifth Embodiment> Next, a fifth embodiment of the present invention will be described. Fig. 17 is a perspective view of the cleaner of the fifth embodiment. For the sake of convenience of explanation, the same portions as those in the first embodiment shown in FIGS. 1 to 9 are denoted by the same reference numerals. In the fifth embodiment, the difference from the first embodiment is that a so-called stick type cleaner 40 is used instead of the robot cleaner 1. The other parts are the same as those of the first embodiment.

The cleaner 40 includes a casing 2 in which an air intake port 41 and an exhaust port 5 are provided on the lower surface and the upper surface, respectively. An air passage 6 that connects the intake port 41 and the exhaust port 5 is formed in the casing 2. The dust collecting portion 8, the filter 9, and the electric blower 7 are disposed in this order from the upstream side to the downstream side in the air passage 6. Further, the vacuum cleaner 40 is provided with a power supply line (not shown) similar to that of the fourth embodiment.

A grip portion 35 and an operation portion 16 are provided at an upper portion of the housing 2. A rod-shaped suction pipe 47 is connected to the intake port 41 of the casing 2. A suction nozzle 20 is detachably attached to the suction pipe 47 at the upstream end of the suction pipe 47. The configuration of the suction nozzle 20 of the present embodiment is the same as that of the suction nozzle 20 of the fourth embodiment.

Also in the present embodiment, the same effects as those of the first embodiment can be obtained. Further, in the rod type vacuum cleaner 40, the suction efficiency and the cleaning efficiency can be improved.

Sixth Embodiment Next, a sixth embodiment of the present invention will be described. Fig. 18 is a perspective view of the cleaner of the sixth embodiment. For the sake of convenience of explanation, the same portions as those in the first embodiment shown in FIGS. 1 to 9 are denoted by the same reference numerals. In the sixth embodiment, the difference from the first embodiment is that the robot vacuum cleaner 1 is replaced by a so-called handy type cleaner 50. The other parts are the same as those of the first embodiment.

The configuration of the cleaner 50 is the same as the configuration in which the suction pipe 47 is omitted from the cleaner 40 of the fifth embodiment. The user can grip the grip portion 35 and clean the floor F or the table (swept surface) or the like by the vacuum cleaner 50.

Also in the present embodiment, the same effects as those of the first embodiment can be obtained. Moreover, the suction efficiency and the cleaning efficiency can also be improved in the hand-held vacuum cleaner 50.

In the suction nozzles 20 of the fourth embodiment to the sixth embodiment, a separator similar to the separators 25 of the second embodiment and the third embodiment may be provided instead of the separator of the first embodiment. Board 25.

Further, in the suction nozzles 20 of the fourth to sixth embodiments, a rotating brush may be provided in the suction port 4.

[Industrial Applicability] According to the present invention, it can be used for a suction nozzle and a vacuum cleaner provided therewith.

Further, each element appearing in the above-described embodiment or modification can be appropriately combined within a range in which no contradiction occurs.

It is apparent that variations and modifications of the present invention are apparent to those skilled in the art without departing from the scope of the invention. The scope of the invention is therefore to be determined solely by the scope of the invention.

1‧‧‧vacuum cleaner (robot vacuum cleaner)
2‧‧‧ frame
4, 4a ~ 4c‧ ‧ suction port
5‧‧‧Exhaust port
6‧‧‧Air passage
7‧‧‧Electric blower
8‧‧‧Dust collection department
9‧‧‧Filter
11‧‧‧Power Supply Department
15‧‧‧Display Department
16‧‧‧Operation Department
19a‧‧‧Drive wheel
19b‧‧‧ driven wheel
20‧‧‧ suction nozzle
21‧‧‧sucking pathway
21a‧‧‧Main pathway
21b, 21c‧‧‧ segmentation pathway
22‧‧‧Exit
25‧‧‧Baffle
25a‧‧‧Upstream vertical section
25b‧‧‧1st bend
25c‧‧‧2nd bend
25d‧‧‧Downside vertical section
25e‧‧‧ Straight line
26‧‧‧Shell
27‧‧‧ joint tube
28a‧‧‧上壁
28b‧‧‧The lower wall
28c, 28d‧‧‧ side wall
29‧‧‧ openings
30‧‧‧vacuum cleaner (horizontal vacuum cleaner)
31, 41‧‧‧ suction port
32‧‧‧Hose
33‧‧‧Extension tube
34‧‧‧Connected tube
35‧‧‧ grip
39‧‧‧ Wheels
40‧‧‧vacuum cleaner (rod cleaner)
47‧‧‧Sucking tube
50‧‧‧vacuum cleaner (handheld vacuum cleaner)
A‧‧‧ Length direction
CT‧‧‧ center line
D‧‧‧dust
F‧‧‧ Ground (swept surface)
S‧‧‧ arrow
W1～W8‧‧‧Width

Fig. 1 is a perspective view of a cleaner according to a first embodiment of the present invention. Fig. 2 is a bottom view of the cleaner according to the first embodiment of the present invention. Fig. 3 is a side sectional view showing the cleaner according to the first embodiment of the present invention. 4 is a perspective view of an air passage on the suction side of the suction nozzle including the cleaner of the first embodiment of the present invention. Fig. 5 is a front cross-sectional view showing a suction nozzle of the cleaner according to the first embodiment of the present invention. FIG. 6 is a perspective view showing a result of simulating the flow of air in the air passage on the suction side of the cleaner according to the first embodiment of the present invention. FIG. 7 is a side view showing a result of simulating the flow of air in the air passage on the suction side of the cleaner according to the first embodiment of the present invention. FIG. 8 is a side view showing a result of simulation of a wind speed distribution in an air passage on the suction side of the cleaner according to the first embodiment of the present invention. FIG. 9 is a side view showing a result of simulation of the wind pressure distribution in the air passage on the suction side of the cleaner according to the first embodiment of the present invention. FIG. 10 is a perspective view of an air passage on a suction side of a suction nozzle including a cleaner according to a second embodiment of the present invention. Fig. 11 is a front sectional view showing a suction nozzle of the cleaner according to the second embodiment of the present invention. FIG. 12 is a perspective view of an air passage on the suction side of the suction nozzle including the cleaner of the third embodiment of the present invention. Fig. 13 is a front sectional view showing a suction nozzle of a vacuum cleaner according to a third embodiment of the present invention. Fig. 14 is a perspective view of a vacuum cleaner according to a fourth embodiment of the present invention. Fig. 15 is a front sectional view showing a suction nozzle of a vacuum cleaner according to a fourth embodiment of the present invention. Fig. 16 is a side sectional view showing a suction nozzle of a vacuum cleaner according to a fourth embodiment of the present invention. Fig. 17 is a perspective view of a vacuum cleaner according to a fifth embodiment of the present invention. Fig. 18 is a perspective view of a vacuum cleaner according to a sixth embodiment of the present invention.

4, 4a~4c‧‧‧ Inhalation

20‧‧‧ suction nozzle

21‧‧‧sucking pathway

21a‧‧‧Main pathway

21b, 21c‧‧‧ segmentation pathway

22‧‧‧Exit

25‧‧‧Baffle

25a‧‧‧Upstream vertical section

25b‧‧‧1st bend

25c‧‧‧2nd bend

25d‧‧‧Downside vertical section

28b‧‧‧The lower wall

28c, 28d‧‧‧ side wall

A‧‧‧ Length direction

CT‧‧‧ center line

S‧‧‧ arrow

W1~W6‧‧‧Width

Claims (11)

a suction nozzle disposed on a vacuum cleaner including an electric blower, the suction nozzle comprising: a suction port extending in a predetermined length direction opposite to the surface to be cleaned; an outlet port connected to the electric blower; The suction passage extends in a center line direction connecting the center of the suction port in the longitudinal direction and the center of the outlet in the longitudinal direction, and connects the suction port and the outflow port; And a plurality of partitions disposed inside the suction passage, extending from the suction port side toward the outflow port side; and the suction passage includes: a main passage through which the pumping is performed a suction passage is partitioned in the longitudinal direction of the suction port, the center line of the suction passage is located on the main passage; and a plurality of divided passages are located at a ratio of the partition The main passage is further located at two outer positions in the longitudinal direction; the suction nozzle is characterized in that a width in the longitudinal direction of the main passage of the suction port is wider than the outflow Width in the longitudinal direction of the main passage. The suction nozzle according to claim 1, wherein at the upstream end, the partition includes an upstream side vertical portion perpendicular to the longitudinal direction. The suction nozzle according to claim 2, wherein the partition plate includes a first bend that is continuous with a downstream side of the upstream side vertical portion and that is convexly curved toward a side away from the center line unit. The suction nozzle according to claim 3, wherein the partition plate includes a second curved portion that is continuous with a downstream side of the first curved portion and that is convexly curved toward a side close to the center line. . The suction nozzle according to claim 4, wherein the partition plate includes a downstream side vertical portion perpendicular to the longitudinal direction at a downstream end continuous with the second bending portion. The suction nozzle according to claim 1, wherein the partition plate includes a downstream side vertical portion perpendicular to the longitudinal direction at a downstream end. The suction nozzle according to claim 1, wherein the partition plate has a flat plate shape, and is disposed on a straight line from the suction port side to the outlet port side. The suction nozzle according to claim 1, wherein a width of the outflow port in the longitudinal direction is narrower than a width in the longitudinal direction of the suction port, and a downstream end of the partition plate is disposed. Within the width of the flow outlet in the length direction. The suction nozzle according to claim 1, wherein a width in the longitudinal direction of the main passage of the suction port is wider than a length direction of the divided passage in the suction port The width on the top. A vacuum cleaner, comprising: a suction nozzle according to any one of claims 1 to 9; a dust collecting portion disposed downstream of the suction nozzle; and the electric blower disposed at the The downstream of the dust collecting part. The vacuum cleaner according to claim 10, wherein the suction passage is formed to extend upward from the suction port, and is coupled to an upper portion of the dust collecting portion, and is covered by the suction nozzle. Above the part of the dust collecting part.