JP2012147819A - Air suction and jetting device, and vacuum cleaner including the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem that dust may be widely stirred and scattered by merely blowing off the dust although the dust may be blown off from an object by jetting air and it is difficult to reliably collect the dust containing fine dust by a dust collection filter even when rapidly blown dust is sucked.SOLUTION: An air suction and jetting device connected to a distal end of a suction hose of a vacuum cleaner and exhibiting a blower function is provided with a minus ion generation part emitting minus ions simultaneously with the jetted air. The dust to be blown is charged with the minus ions, and the dust charged with the minus ions is collected by the vacuum cleaner.

Description

  The present invention relates to an air suction / injection device used in a vacuum cleaner and a vacuum cleaner provided with the air suction / injection device, and in particular, can inject and inject air using suction of air by a vacuum cleaner. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air suction / injection device that can simultaneously release negative ions by air, and a vacuum cleaner including the same.

  A general vacuum cleaner has a function of sucking dust together with air by sucking air (hereinafter referred to as “vacuum function”). A configuration having a function of blowing (hereinafter referred to as “blower function”) has also been proposed. If the vacuum cleaner has a blower function, it is difficult to see for the user (the back side of the installed furniture, the top surface, etc.) or a high position as seen from the user (the top surface of the furniture, the umbrella of lighting, It becomes possible to clean the dust on the ceiling.

  As a specific blower function, a technique using exhaust gas has been conventionally known. This exhaust is a flow of air that has passed through the dust collection chamber of the vacuum cleaner, but in the actual blower function, it is a clean air flow. However, the user has an unsanitary image in that exhaust is used. In addition, if the blower function uses a suction hose or extension pipe, etc., it is suspected that a small amount of dust adhering to the inside will be ejected, so the user still has an unsanitary image. End up. Therefore, recently, various blower functions that do not use exhaust gas have been proposed.

  For example, Patent Literature 1 discloses an air suction / injection device that includes a suction fan that operates by suction force, an injection fan that generates injection force, and power transmission means that transmits power of the suction fan to the injection fan. It is disclosed. According to this configuration, the injection fan can be rotated by the suction force of the vacuum cleaner simply by connecting the air suction / injection device to the suction hose. Therefore, a blower function that does not use exhaust can be additionally used regardless of the type of vacuum cleaner.

  Further, Patent Document 2 discloses a suction tool for a vacuum cleaner having a configuration including a pressure generation unit that feeds air into a jet nozzle provided in a suction port. This suction tool injects compressed air generated by a pressure generating unit such as an air pump from an ejection nozzle, and sucks dust that has adhered to the surface to be cleaned or accumulated in the back of the concavo-convex part. Therefore, a blower function that does not use exhaust gas can be realized, and dust blown off by the blower function can be quickly sucked, so that efficient dust collection is possible.

JP 2000-217746 A JP 2001-321305 A

However, in the above-mentioned conventional technology, when the dust blown off by the blower function is sucked with a vacuum cleaner and collected by a dust collecting filter formed of a charged non-woven fabric incorporated in the main body of the vacuum cleaner, High collection performance such as dust cannot be obtained, and air injection and suction timing cannot be easily switched with a simple configuration, so the blower function contributes sufficiently in cleaning vacuum cleaners. I can't let you.

  Specifically, the situation where the blower function can be preferably used is as follows: (1) Cleaning that blows away fine dust, etc., and sucks it and collects it sufficiently with the dust collection filter of the vacuum cleaner, or (2) In addition to (3) cleaning of dust that has adhered to the surface to be cleaned or accumulated in the back of uneven parts, and (4) close to the suction port, it may be damaged or desirable. For example, there is no movement, incorrect operation, or cleaning of objects that may cause incorrect suction. However, in the conventional technique, it is difficult to easily switch between the blower function and the vacuum function, and thus it is not possible to sufficiently cope with the various situations as described above.

  For example, as an example of the situation of (1) above, dust accumulated on a shelf or the like includes cotton-like fibers in ordinary households, and the entrance / exit of a person while the house window is open When the dust blown by the blower function is sucked with an electric vacuum cleaner, relatively large fibrous cotton dust is reliably collected by the dust collecting filter. Fine dust may pass through the fibers constituting the dust collection filter due to variations in the density of the dust collection filter, and may be discharged to the outside along with the exhaust of the main body of the vacuum cleaner. In addition, examples of the situation of (4) include figurines such as artificial flowers that may be broken by suction, wall-mounted foreheads or watches that tilt when touched directly for cleaning, telephones that may be erroneously operated due to proximity of the suction port, Faxes, personal computer keyboards, or drawers containing small objects that may be accidentally sucked. When cleaning these objects, normal suction alone will cause damage, movement, or erroneous suction as described above. May occur.

  Here, if the conventional blower function is used, dust can be blown away from the object by air injection, but if it is simply blown away, there is a risk that the dust will spread widely. Further, even when the dust blown off in a hurry is sucked, in the case of dust containing fine dust, it is difficult to reliably collect it with the dust collecting filter. In addition, since the conventional technology does not particularly disclose a configuration for switching between the normal vacuum function and the blower function, the vacuum function and the blower function are adapted to various situations such as (1) to (4) described above. Are easily switched with a simple configuration.

  The present invention has been made to solve such a problem, and discharges negative ions simultaneously with the air jetted by the blower function, charges negative ions to dust to be blown off, and uses a vacuum cleaner to discharge the negative ions. The purpose is to obtain high collection efficiency by the charged filter built in the vacuum cleaner by collecting the dust charged in the vacuum cleaner, and the vacuum function and blower function of the vacuum cleaner are simplified. It is an object of the present invention to provide a technique that can be easily switched by a configuration and that can effectively use a blower function even in various situations.

  In order to solve the above problems, an air suction / injection apparatus according to the present invention is connected to the front end of a suction hose included in a vacuum cleaner, and has one end connected to the front end of the suction hose. And the other end is a tip opening, the inside of which is a tubular main body having a main air flow path, an injection air introduction port for introducing air from the outside, and an injection port for injecting the introduced air to the outside An injection flow path portion, the inside of which is a sub flow path extending from the injection air introduction port to the injection port, and the mainstream by suction of air through the suction hose. A power fan that is rotated by a suction air flow formed in a passage, and is provided inside the injection flow path section, rotates in conjunction with the power fan, and is injected into the sub flow path from the injection air introduction port. Blast air toward the mouth An injection fan that forms an a configuration that includes a negative ion generator for simultaneously emitting negative ions and air injection.

  According to the said structure, the effect | action which discharge | releases a negative ion simultaneously with the air to inject and charges a negative ion to the dust to blow off can be acquired. And in a vacuum cleaner having a dust collection chamber equipped with a filter portion subjected to charging processing, the dust collection portion of the vacuum cleaner was subjected to charging processing by collecting dust charged with the negative ions. A high collection efficiency can be obtained by the filter section.

  The air suction / injection device includes an injection switching unit that permits or restricts the injection of the injection airflow from the injection port to the outside. According to the above-described configuration, not only can the injection air flow be formed in the sub-flow path with a configuration that does not require a specific power source, but also the injection switching unit permits or blocks the injection of the injection air flow from the injection port. can do.

  Therefore, when the vacuum cleaner is used, not only a complicated configuration but also a jet air flow can be easily ejected from the tip of the suction nozzle and the like, and the operation of the jet switching unit substantially reduces the air flow. Can be easily switched between suction (vacuum function) and injection (blower function). As a result, the blower function and the vacuum function in the vacuum cleaner can be easily switched with a simple configuration, and the blower function can be used effectively in various situations.

  In addition, the air containing negative ions to be sprayed is blown to the dust and blown away, and at the same time, the negative ions are charged and switched to air suction (vacuum function) as appropriate. The suction can be performed, and a high collection efficiency can be obtained by the filter portion subjected to the charging process of the dust collection portion of the vacuum cleaner.

  In the air suction / injection apparatus, a negative ion generation unit is provided in the vicinity of the rotation axis of the injection fan. According to the above configuration, the air flow to be injected is generated by the rotation of the injection fan, and the influence on the decrease in the rotational force of the injection fan can be greatly reduced, and negative ions are added to the air flow to be injected. Can be evenly diffused, further increasing the negative ion charging effect on the dust to be blown away, and sucking it into a vacuum cleaner, further enhancing the collection effect in the dust collection chamber with the charged filter part. is there.

  As described above, in the present invention, negative ions are released simultaneously with the air jetted by the blower function, the negative ions are charged to the blown-off dust, and the dust charged with the negative ions is collected by a vacuum cleaner. The purpose is to obtain high collection efficiency by the charged filter built in the vacuum cleaner, and the vacuum function and blower function of the vacuum cleaner can be easily switched with a simple configuration, and The blower function can be effectively used even in various situations.

The perspective view which shows an example of a vacuum cleaner provided with the air suction injection apparatus which concerns on Embodiment 1 of this invention. The side view which shows an example of the air suction injection apparatus which concerns on Embodiment 1 of this invention The perspective view which shows an example of the state which attached the suction nozzle to the air suction injection apparatus shown in FIG. FIG. 3 is a side view of the air suction / injection device shown in FIG. 3, illustrating an example of a vacuum state (at the time of forming a suction air flow). Sectional drawing which shows an example of an internal structure at the time of vacuum (at the time of formation of a suction air flow) in the air suction / injection apparatus shown in FIG. 4 from the side The side view which shows an example of the state which attached the air suction injection apparatus shown in FIG. 3 to the hand operation part (suction hose) with which a vacuum cleaner is provided. FIG. 3 is a side view showing an example of the state of the air suction / injection device shown in FIG. 3 at the time of blower (formation of an injection air flow). Sectional drawing which shows an example of an internal structure at the time of blower (at the time of formation of an injection air flow) in the air suction injection apparatus shown in FIG. 8 is a partial cross-sectional view showing an example of the state in the suction chamber during blower (when the jet air flow is formed) in the air suction / injection device shown in FIG. 8 from below (in the direction of arrow I in FIG. 8). The perspective view which shows an example of the state which made the front-end | tip brush with which a suction nozzle is provided protrude in the air suction / injection apparatus shown in FIG.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. In the following description, the same or corresponding elements are denoted by the same reference symbols throughout the drawings, and redundant description thereof is omitted.

(Embodiment 1)
[Configuration example of vacuum cleaner]
First, an example of a vacuum cleaner provided with the air suction / injection device according to Embodiment 1 of the present invention will be specifically described with reference to FIG. As shown in FIG. 1, an air suction / injection device 10 </ b> A according to the present embodiment is provided in a typical canister-type vacuum cleaner 20. That is, the canister type vacuum cleaner 20 (hereinafter simply referred to as the “vacuum cleaner 20”) includes a vacuum cleaner body 21, a suction hose 22, a hand operating portion 23, a suction extension pipe 24, a suction port body 25, and a suction nozzle 26. And an air suction / injection device 10A.

  The vacuum cleaner body 21 includes an electric blower 31, a dust collection chamber 32, a wheel 33, and a power cord 34, and one end of the suction hose 22 is detachably connected via a connection pipe 35. A hand operating section 23 is provided at the other end of the suction hose 22, and one end of the suction extension pipe 24 is detachably connected to the tip of the hand operating section 23. Further, a suction port body 25 is detachably attached to the other end of the suction extension tube 24. A suction nozzle 26 and an air suction / injection device 10A are detachably attached to the lower side of the hand operation unit 23. The suction nozzle 26 and the air suction / injection device 10A are provided with a hand operation unit instead of the suction extension pipe 24. It can be attached to the tip of 23.

  The vacuum cleaner main body 21 is provided with a dust collection chamber 32 for storing an electric blower 31 and an electret-processed dust collection bag 32 a that detachably collects dust. The suction force is generated in the suction port (not shown) of the suction port body 25 through the suction hose 22 and the suction extension pipe 24. A power cord 34 is housed inside the vacuum cleaner body 21 so that it can be pulled out. Moreover, the cleaner body 21 is configured to be movable on the floor surface by a pair of wheels 33 provided on both sides.

When using the vacuum cleaner 20, first, the user pulls out the power cord 34 from the cleaner body 21 and inserts the power plug at the tip into the power outlet when using the vacuum cleaner 20. Turn on the main body 21. Thereby, since suction force is generated at the suction port of the suction port body 25 by the operation of the electric blower 31, dust on the floor surface is sucked and collected through the suction extension pipe 24, the suction hose 22, and the connection pipe 35. Collected in chamber 32. The electret-processed dust collection bag 32a is made of thermoplastic fiber such as polypropylene, and is charged by friction such as sucked air. Due to the charging effect of the dust collection bag 32a, the dust collection bag 32a collects simultaneously with air. Coulomb force acts on the dust sucked into the dust bag 32a, adsorbs dust to the fibers constituting the dust bag 32a, and prevents the outflow of fine dust to the exhaust discharged from the cleaner body 21. it can.

  The user changes the area of the floor surface to be cleaned by gripping the hand operation unit 23 and moving the position of the suction port body 25 on the floor surface. Moreover, when changing the place of cleaning, the vacuum cleaner main body 21 moves on the floor surface by the rotation of the wheel 33 by pulling the suction hose 22. Note that the cleaner body 21 is provided with a handle (not shown), so that the cleaner body 21 can be lifted and moved.

  In addition, when it is desired to clean a narrow area such as a corner of a room, a gap such as furniture, not the floor surface, the suction extension pipe 24 or the suction port body 25 is removed, and a suction nozzle 26 is attached instead, and cleaning is performed. . Furthermore, (1) cleaning at a position that is difficult for the user to see or at a high position, (2) cleaning dust adhering to the surface to be cleaned or collecting in the back of the uneven portion, (3) damage if the suction port is brought close to the surface. In addition, when it is desired to clean an object that may cause undesired movement, erroneous operation, or erroneous suction, the blower function can be suitably used in addition to the normal vacuum cleaning (vacuum function cleaning). . Therefore, the suction extension pipe 24 or the suction port body 25 is removed, and the air suction / injection apparatus 10A is attached instead, and the suction nozzle 26 is attached to the tip of the air suction / injection apparatus 10A to perform cleaning.

  The specific configuration of the vacuum cleaner 20 shown in FIG. 1, that is, the vacuum cleaner main body 21, the suction hose 22, the hand operation unit 23, the suction extension pipe 24, the suction port body 25, the suction nozzle 26, etc. is not particularly limited. Various configurations known in the field of electric vacuum cleaners can be suitably used.

[Configuration of Air Suction / Injection Device]
Next, a specific configuration of the air suction / injection device 10A according to the present embodiment will be described with reference to FIGS.

  As shown in the side view of FIG. 2, the air suction / injection device 10A according to the present embodiment includes a main body 111, an injection flow path 112, a lever member 113, a fan, a suction chamber, and a flow not shown in FIG. A path switching unit is provided. Also, as shown in the perspective view of FIG. 3 and the side view of FIG. 4, a suction nozzle 26A having a brush at the tip can be attached to the air suction / injection device 10A.

  The main body 111 has a substantially tubular shape, and the inside is a main air flow path. Both ends of the main body 111 are a front end opening 111a and a rear end opening 111b, respectively. The front end opening 111a is a substantially rectangular opening that can be fitted with the suction nozzle 26A (or another suction nozzle 26). The rear end opening 111b is configured as a cylindrical opening that can be attached to the suction hose 22 (more specifically, the hand operation unit 23). The front end opening 111a and the rear end opening 111b are preferably formed in a tapered shape. Thereby, it becomes easy to attach or detach the suction nozzle 26A or the suction hose 22 to the outer periphery of the front end opening 111a or the rear end opening 111b.

  As shown in FIG. 2 or FIG. 4, the injection flow path portion 112 is provided so as to be integrated with the main body portion 111 in a positional relationship inclined with respect to the tube axis direction of the main body portion 111. The inside of the ejection flow path portion 112 is a sub flow path for air, and the sub flow path is configured to be connected to the tip opening 111a. In addition, the injection flow passage 112 is provided with an injection air introduction port 112a.

The air suction / injection device 10 </ b> A is basically attached to the hand operating portion 23 at the tip of the suction hose 22 with the injection flow path portion 112 positioned upward. Therefore, in the following description, the side where the injection flow path portion 112 is located is referred to as “upper”, and the opposite side is referred to as “lower”. Further, the side where the front end opening 111a is located is referred to as a “front end”, and the side where the rear end opening 111b is located is referred to as a “rear end”.

  The portion of the ejection flow path portion 112 that is exposed upward from the main body portion 111 extends so as to be inclined with respect to the tube axis direction of the main body portion 111, as shown in FIG. As shown in FIG. 3, a disk-shaped part is provided on the upper surface, and a blast air inlet 112a is formed on the lower side of the disk. The jet air introduction port 112a is an opening for allowing air to flow into the jet flow path portion 112, that is, the sub flow path.

  In addition, a plurality of suction force adjusting holes 111c are provided along the outer periphery of the main body 111 at the lower side of the main body 111, that is, on the opposite side of the injection flow path 112 with the main body 111 interposed therebetween. Yes. The suction force adjusting hole 111c has an excessive load on the vacuum cleaner due to the tip opening 111a blocking the main flow path of the main body 111 due to dust suction or suction, etc., and the inflow of air becomes below a certain level. In order to prevent this, the outside air is taken into the main channel other than the tip opening 111a.

  The lever member 113 includes a switching lever 113a, a lever support portion 113b, and an air introduction lid member 113c. As shown in FIGS. 2 and 4, a lever support portion 113b is located between the switching lever 113a and the air introduction lid member 113c, and the lever support portion 113b can be rotated while penetrating the main body portion 111. It is a rotating shaft held by Further, as will be described later, a flow path switching portion is attached to the lever support portion 113b, and the flow path switching portion can be switched by operating the switching lever 113a.

  As shown in FIG. 3, the switching lever 113 a has a frame shape positioned so as to cover the lower side of the main body 111, but the air introduction lid member 113 c is a suction provided on the side surface of the main body 111. It is a plate-like material that closes an air inlet (not shown in FIGS. 2 to 4) so that it can be opened and closed. As shown in FIG. 3, the switching lever 113a is urged to the front end side by an elastic member such as a spring, so that the air introduction lid member 113c is basically located on the rear end side. As will be described later, since the lever member 113 rotates around the lever support portion 113b, if the switching lever 113a is moved to the rear end side, the air introduction lid member 113c moves to the front end side. At this time, the suction air introduction port (not shown in FIGS. 2 to 4) closed by the air introduction lid member 113c is opened. Further, when the switching lever 113a is sufficiently moved to the rear end side, the air introduction lid member 113c is configured not to move more than necessary to the front end side because it stops by contacting a part of the lower surface of the main body 111. ing.

  As shown in FIG. 3 or FIG. 4, the suction nozzle 26 </ b> A attached to the front end opening 111 a of the main body 111 includes a nozzle main body 261 and a front end brush 262. As shown in FIG. 3, a suction port 261 a for sucking dust or the like is provided at the tip of the nozzle body 261. Further, in the configuration shown in FIG. 3 or FIG. 4, the tip brush 262 is folded below the nozzle body 261. However, as will be described later, the tip brush 262 can protrude so as to be positioned on the tip side of the suction port 261a. ing.

As shown in the longitudinal sectional view of FIG. 5, the air suction / injection apparatus 10 </ b> A includes a main channel 101 configured by the inside of the main body 111 and a sub-channel 102 configured by the interior of the injection channel 112. And a suction chamber 115 facing the main channel 101 at the lower side of the injection channel unit 112. The ejection flow path part 112 and the suction chamber 115 are adjacent to each other and integrated, and a fan part 114 is provided in the interior. In other words, the injection flow path part 112 and the suction chamber 115 are fan part accommodating parts, and the suction chamber 115 is a power fan accommodating part. In addition, an internal suction port 115 a is provided at a portion facing the main flow path 101 in the suction chamber 115, and further, a suction air introduction port connected to the outside of the main body 111 is provided as will be described later.

  The fan unit 114 includes an ejection fan 114a positioned in the ejection flow path unit 112, a power fan 114b positioned in the suction chamber 115, and a fan rotating shaft 114c that rotatably supports these fans. . The jet fan 114a forms a jet air flow that flows in the sub-flow channel 102 toward the tip opening 111a. Since the power fan 114b shares the fan rotation shaft 114c with the spray fan 114a, the power fan 114b is configured to rotate in conjunction with the spray fan 114a. The rib body 400 extending from the bearing portion of the fan rotation shaft 114c of the spray fan 114a is configured by holding and fixing the brush body 300 in contact with the central shaft portion 114d by adhesion or the like even when the spray fan 114a is rotating. ing.

  Further, as a material constituting the spray fan 114a and the brush body 300, for example, if the spray fan 114a is made of thermoplastic resin nylon and the brush body 300 is made of Teflon (registered trademark) fibers, the frictional charge train is separated. When the spray fan 114a rotates and the brush body 300 in contact with the central shaft portion 114d rubs, air ions having electric charges can be generated around the fan rotation shaft 114c. For example, the same effect can be obtained by adopting nylon fiber for the brush body 300 and attaching a member made of Teflon (registered trademark) to the central shaft portion 114d. Note that the specific operation of the fan unit 114 will be described together with the formation of a jet air flow to be described later.

  As described above, the main flow channel 101 and the sub flow channel 102 are configured by the inside of the main body portion 111 and the injection flow channel portion 112, respectively, and as shown in FIG. The flow path 102 merges. When viewed from the tip opening 111a, the main channel 101 (main body 111) extends in a substantially straight direction, but the sub-channel 102 has an acute angle with respect to the main channel 101 in the middle of the main channel 101. Branches in the direction it has. If this state is expressed not on the basis of the main flow path 101 and the sub flow path 102 but on the basis of the main body portion 111 and the injection flow path section 112, the injection flow path section 112 is connected to the sub flow path 102 inside. However, it is provided in the main body 111 so as to merge with the main channel 101 inside the main body 111. Further, since the sub-flow channel 102 merges with the main flow channel 101, the tip opening 111 a in the main body 111 serves also as an injection port in the injection flow channel 112.

  Further, a flow path switching unit 116 is provided at a portion where the main flow path 101 and the sub flow path 102 merge. The flow path switching unit 116 may be configured to switch at least connection or blocking of the sub flow path 102 with respect to the tip opening 111a, but in the present embodiment, the main flow path 101 or An alternative switching is performed so that one of the sub-channels 102 is connected.

  Specifically, as shown in FIG. 5, the flow path switching unit 116 is a substantially plate-like valve member, and one end thereof is fixedly supported by the lever support unit 113b. Therefore, by operating the switching lever 113a, the flow path switching unit 116 swings in the region of the merging site with the lever support 113b as a fulcrum. Therefore, the swing angle of the flow path switching unit 116 can be freely changed by operating the switching lever 113a.

  Here, as shown in a region surrounded by a broken line in FIG. 5, the joining part in the main channel 101 is defined as “main body joining port 111d”, and the joining part in the sub channel 102 is defined as “injection joining port 112b”. For example, the flow path switching unit 116, which is a valve member, changes the angle (swings) so as to close one of the main flow path 101 and the sub flow path 102 by operating the switching lever 113a. In the configuration shown in FIG. 5, the flow path switching unit 116 is in a state where the injection junction 112b is closed.

  Further, in both the main body junction port 111d and the injection junction port 112b, the movement of the flow path switching unit 116 is moved at a predetermined position so that the swing of the flow path switching unit 116 does not reach the position beyond the closed state. Stopping stoppers 111e and 112c are provided. These stoppers 111e and 112c are protrusions from which the inner wall surface of the main body part 111 or the injection flow path part 112 protrudes. In the configuration shown in FIG. 5, the stoppers 111e and 112c are linear protrusions that match the shape of the flow path switching part 116. However, it is not limited to this configuration, and may be a protrusion having another shape.

  Specific configurations of the air suction / injection device 10A and the suction nozzle 26A according to the present embodiment are not particularly limited, and the main body 111, the injection flow path 112, the lever member 113, the fan part 114, the suction chamber 115, and the flow path. The switching part 116 etc. should just be able to be manufactured using a well-known member, material, shape, etc. in the field | area of a vacuum cleaner or the field | area of household appliances widely.

[Operation of air suction / injection device]
Next, the operation of the air suction / injection apparatus 10A having the above-described configuration, particularly the details of the function (blower function) for injecting the air flow from the suction port 261a, and the function for performing the blower function and normal suction (vacuum) The function switching is specifically described with reference to FIGS. 6 to 9 in addition to FIG.

  First, as shown in FIG. 6, for example, the air suction / injection device 10 </ b> A can be used by being directly attached to the hand operation unit 23 provided at the tip of the suction hose 22. That is, the user removes the suction extension tube 24 from the state in which the suction extension tube 24 and the suction port body 25 are attached to the hand operation unit 23 (see FIG. 1), and attaches the air suction / injection device 10A instead. Use as Note that a suction nozzle 26A is attached to the air suction / injection device 10A (see FIGS. 3 to 5), and the operation of the air suction / injection device 10A will be described based on this state in the following description.

  Next, a normal vacuum function will be described. As shown in FIG. 5, in the air suction / injection device 10 </ b> A, the switching lever 113 a is in a steady state where the switching lever 113 a is located on the distal end side. The injection junction 112b is closed, and the main junction 111d is opened. When a suction force is generated by the operation of the cleaner body 21 (not shown in FIG. 5), the suction force is supplied to the main channel 101 and the suction nozzle 26A via the suction hose 22 (not shown in FIG. 5). Reach up to. Therefore, the outside air is sucked from the suction port 261a as shown by the thick arrow in the figure, and a suction air flow is formed in the main channel 101 from the front end opening 111a toward the rear end opening 111b.

  Next, switching to the blower function will be described. As shown in FIG. 7, when the user performs an operation of moving the switching lever 113a to the rear end side, the air introduction lid member 113c moves to the front end side, so that the suction air closed by the air introduction lid member 113c. The inlet 115b is opened. Further, as shown in FIG. 8, in the joining portion of the main passage 101 and the sub-passage 102, the passage switching unit 116 closes the main body joining port 111 d from the position where the injection joining port 112 b is closed. Move up. As a result, the injection junction 112b is opened, so that the sub-channel 102 is connected to the tip opening 111a, but the main channel 101 is blocked from the tip opening 111a. The suction force generated in the vicinity of the rear end opening 111b sucks the air inside the suction chamber 115 from the internal suction port 115a as shown by the thick line arrow in the figure.

At this time, as shown in FIG. 9 as viewed from the direction of the two-dot chain line arrow I in FIG. 8, the opened suction air introduction port 115 b is connected to the suction chamber 115. Is connected to the open air. Therefore, a suction air flow is formed toward the suction air introduction port 115b, the suction chamber 115, and the internal suction port 115a. This suction air flow
It flows from the rear end opening 111b toward the suction hose 22 (not shown in FIGS. 8 and 9) through the main channel 101. And since the power fan 114b is provided in the inside of the suction chamber 115, this power fan 114b rotates by the effect | action of a suction airflow. More specifically, if the main flow path 101 is depressurized by the suction air flow generated in the main flow path 101, the pressure inside the suction chamber 115 is also depressurized as it is, and the suction air introduction port 115b is changed to the internal suction port 115a. A large amount of suction air flow is formed toward the direction. As a result, the power fan 114 b rotates inside the suction chamber 115.

  Furthermore, since the power fan 114b shares the fan rotation shaft 114c with the ejection fan 114a, the ejection fan 114a also rotates as the power fan 114b rotates. Since the injection fan 114a is provided in the injection flow path 112, an injection air flow is formed in the sub flow path 102 as shown by the thick arrow in FIG. 8, and the injection air flow is sucked from the tip opening 111a. It flows into the nozzle 26A and is ejected from the suction port 261a.

  At this time, the spray fan 114a and the brush body 300, which are formed of a material having a distant relationship with the frictional charge train as described above, rubbed with the central shaft portion 114d, so that electric charge was generated around the fan rotation shaft 114c. If air ions are generated and discharged together with the jet air flow from the suction port 261a to the atmosphere, and the jet air flow is blown against the dust, the dust can be charged. When this charged dust is sucked into the vacuum cleaner main body 21, it adheres to the fibers of the dust collection bag 32a by the Coulomb force with the dust collection bag 32a and prevents the fine dust from flowing into the exhaust of the vacuum cleaner main body. It becomes possible to obtain clean exhaust.

  If the user releases the state in which the switching lever 113a is moved to the rear end side, the switching lever 113a moves from the rear end side to the front end side and returns to the original position. Accordingly, the air introduction lid member 113c closes the suction air introduction port 115b, and the flow path switching unit 116 moves from a position where the injection junction port 112b is opened to a position where the main body junction port 111d is opened. Therefore, the secondary flow path 102 is blocked from the front end opening 111a, and the main flow path 101 is connected to the front end opening 111a. Therefore, the rotation of the power fan 114b and the injection fan 114a is stopped, and the injection that has been injected from the suction port 261a. Air flow is also stopped. In addition, since a suction air flow is formed in the main channel 101, a suction force is generated again at the suction port 261a.

  As described above, in the present embodiment, it is possible to eject the jet air flow from the tip opening 111a simply by switching the flow path switching unit 116 by operating the switching lever 113a. Therefore, when using the vacuum cleaner 20, it is possible to easily eject the jet air flow from the tip of the suction nozzle 26 </ b> A without using a complicated configuration. Moreover, since the blower function can be stopped and returned to the vacuum function simply by returning the switching lever 113a to the original state, not only the operability is improved, but the vacuum function and the vacuum function The blower function can be switched appropriately.

  If the vacuum function and the blower function can be switched easily, for example, the blower function blows away the dust accumulated on the object to be cleaned, then immediately returns to the vacuum function, and the blown-up dust is diffused indoors. Suction can be done quickly before Such cleaning methods include, for example, (1) cleaning at a position that is difficult for the user to see or at a high position, (2) cleaning dust that has adhered to the surface to be cleaned or accumulated in the back and forth of the uneven portion, and (3) suction. When the mouth is brought close, it can be suitably used for cleaning an object that may be damaged, undesirably moved, erroneously operated, or erroneously sucked.

Further, in the cleaning of (3), if the momentum of the jet air flow is constant, depending on the type of the object or dust, the dust may be scattered more than necessary by blowing the jet air flow. is there. Here, in the present embodiment, the flow path switching unit 116, which is a valve member, changes the angle so as to open one of the main flow path 101 or the sub flow path 102 and close the other by operating the switching lever 113a. It is a configuration. Therefore, for example, if the switching lever 113a is not moved completely to the rear end side but is held at an intermediate position, the jet air flow and the suction air flow can be formed simultaneously.

  Therefore, by adjusting the operating condition of the switching lever 113a, the ratio of the jet air flow and the suction air flow can be freely changed, and a jet air flow having a suitable flow rate can be applied to the object. Further, since the flow rate of the jet air flow can be finely adjusted by adjusting the operating condition of the switching lever 113a, the blower function can be finely adjusted.

  Further, the injection fan 114 a that forms the injection air flow is rotated by the power fan 114 b, and the power fan 114 b is rotated by the suction air flow formed in the main flow path 101. Therefore, since the ejection fan 114a can be rotated by the airflow flowing through the main flow path 101, it is not necessary to provide a drive source that uses a power source in order to rotate the ejection fan 114a. Therefore, the configuration of the air suction / injection device 10A can be simplified, and an increase in cost can be avoided.

  As shown in FIG. 10, even when the tip brush 262 of the suction nozzle 26A is protruded so as to be positioned on the tip side of the suction port 261a, the vacuum function and the blower function are appropriately performed as described above. Can be switched. That is, as shown in FIG. 10, if the switching lever 113a is moved to the rear end side, the suction air introduction port 115b is opened, so that air is taken into the suction chamber 115 from the suction air introduction port 115b, and the suction air A suction air flow having a large flow rate is formed from the introduction port 115b toward the internal suction port 115a. As a result, the power fan 114b inside the suction chamber 115 can be vigorously rotated, so that an injection air flow having a high flow velocity can be formed by the injection fan 114a.

  In addition, this invention is not limited to description of each embodiment mentioned above, A various change is possible within the range shown to the claim.

  The present invention is suitable for the field of various types of vacuum cleaners, whether for home use or business use, and for canister type and upright type, if the blower function is to be used together with the vacuum function. Can be used.

10A Air suction / injection device 111 Main body portion 111a Front end opening portion 111b Rear end opening portion 112 Injecting flow path portion 112a Injecting air introduction port 113 Lever member 113c Air introduction lid member 114a Injecting fan 114b Power fan 114c Fan rotating shaft 114d Central shaft portion 115 Suction chamber (power fan housing)
115a Internal suction port 115b Suction air introduction port 116 Channel switching part (valve member)
300 brush body 400 rib body

Claims (6)

Connected to the tip of the suction hose of the vacuum cleaner,
A tubular main body having one end formed as a rear end opening connected to the front end of the suction hose and the other end formed a front end opening, the inside of which is a main air flow path;
An injection flow path section having an injection air introduction port for introducing air from the outside and an injection port for injecting the introduced air to the outside, the inside of which is a sub-flow path from the injection air introduction port to the injection port When,
A power fan provided inside the main body and rotated by a suction air flow formed in the main flow path by suction of air through the suction hose;
An injection fan that is provided inside the injection flow path section, rotates in conjunction with the power fan, and forms an injection air flow from the injection air introduction port toward the injection port in the sub flow path;
An air suction / injection device comprising a negative ion generator for generating negative ions in the sub-flow channel. The air suction / injection device according to claim 1, further comprising an injection switching unit that permits or restricts injection of the injection airflow from the injection port to the outside. The air suction / injection device according to claim 1, wherein the negative ion generation unit is provided near a rotation axis of the injection fan. The air suction / injection device according to claim 1, wherein the negative ion generation unit is configured to contact a part of an injection fan in which a brush body rotates. The air suction / injection apparatus according to claim 4, wherein the brush body and a part of the injection fan are in a relationship of being separated from each other by a wear charge train. A vacuum cleaner provided with the air suction / injection device according to claim 1.