JP6511651B2 - Air blower - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a portable blower working machine, and more particularly to the technology of an injection tube for injecting a wind from a blower driven by a prime mover in a desired direction.

  In the past, it has been practiced to collect fallen leaves, trash, etc. scattered on streets, stadiums, etc. using a portable blower working machine. The blower working machine is a motor such as an engine or motor, and the motor The machine is equipped with a blower that is rotationally driven by the motor and a nozzle tube that blows the wind from the blower in the desired direction, and a worker carries the blower on his back or shoulders and holds the nozzle tube by hand while carrying It is possible to Further, a technique is known which is provided with a notch for changing the discharge direction from the tip of the injection tube connected to the air jet port of the blower (see, for example, Patent Document 1).

JP, 2010-13954, A

A notch is formed at the tip of the cylindrical injection tube connected to the blower, and the injection hole at the tip of the injection tube is pressed against the ground at the time of operation, so as to be forward (or backward or lateral) from the notch It was made to be able to blow off easily the refuse etc. which were jetted and accumulated in the corner of a wall etc.
However, according to the blower working machine, the nozzle can not be jetted in the direction of the notch unless the end of the injection tube is pressed against the ground. That is, until the tip of the injection tube is pressed against the ground, it may not be able to blow out from the surroundings and fly in the desired direction, and when working while moving it is difficult to seal the tip, There is a case where it is difficult to collect dust and the like in a desired direction because the injection output in the direction of the notch becomes weak.
Therefore, in view of such problems, the present invention is a blower work machine that can be easily collected in a desired direction without pressing the injection pipe of the blower against a wall or the ground when the worker carries out the work of gathering fallen leaves, dust, etc. I will provide a.

The problem to be solved by the present invention is as described above, and next, means for solving the problem will be described.
That is, according to the first aspect of the present invention, there is provided a blowing operation comprising a prime mover, a blower rotationally driven by the prime mover, and a nozzle tube connected to the discharge port of the blower and injecting the wind sent from the blower. The injection tube is formed in a cylindrical shape, a bottomed cylindrical injection direction control member is removably attached to the tip of the injection pipe, and the injection direction control member has an injection area with a large opening area on the side surface The hole and the injection hole having a small opening area are disposed to be diametrically opposed .

In 請 Motomeko 2, the tip of the injection direction control member in which the ground material is provided.

The effects of the present invention are as follows.
That is, it becomes possible to inject the wind in the desired direction from the tip of the injection pipe, and when cleaning the wall or the central separation zone of the road or the step portion of the sidewalk, air collides with the wall or step and leaves or dust It is possible to easily collect fallen leaves, trash, and the like in a desired direction without causing the soaring and scattering around.

The rear view which showed the whole structure of the air blower working machine which concerns on one Example of this invention. The side surface partial cross section figure of the blower working machine. The figure which shows the working condition by a blower working machine. The enlarged view which shows the working condition of a nozzle. FIG. The perspective view which shows the front-end | tip part of an injection pipe, and the injection direction control member. The perspective view of the injection direction control member of embodiment which provided multiple injection holes. The perspective view of the injection direction control member of embodiment which opposingly arranged two injection holes. The perspective view of the injection direction control member of embodiment which made the magnitude | size of the injection hole changeable. The perspective view which constituted the bottom of the injection direction control member so that opening and closing was possible. (A) A plan view of an ejection direction control member configured to be foldable, (b) the same side view, (c) a partial side view of the ejection direction control member in which the discharge direction of the nozzle can be changed. The side view which provided the grounding body in the tip of the injection direction control member.

The entire construction of a blower work machine 1 according to the present invention will be described with reference to FIGS. 1, 2 and 3. FIG.
The blower work machine 1 includes a backrest rack 10 provided so that a worker can carry out work and an engine 20 serving as a prime mover installed on the backrest rack 10 and a blower driven by the engine 20 30 and an injection tube 40 for injecting the air sent from the blower 30. However, the prime mover is not limited to the engine 20 and may be a motor driven by the electric power from the battery. In addition, it is also possible to configure it as a shoulder-type portable type.

  The backrest frame 10 includes a backrest 11 that abuts the back of the worker, and a grip 13 for carrying the support 12 extending horizontally from the lower end of the backrest 11 in the back direction of the worker. Ru. The backrest portion 11 is provided with a back strap belt (not shown), and the worker can carry the blower work machine 1 by passing an arm through the back strap belt. Further, the engine 20, the blower 30, the fuel tank 50 and the like are mounted on the support portion 12.

  The engine 20 functions as a prime mover for rotationally driving the blower 30, and is mounted in an upright posture (vertically placed, with an output shaft in the front-rear direction), and between the engine 20 and the support portion 12 A fuel tank 50 for the engine 20 is disposed between the two.

  Further, as shown in FIG. 1, a recoil starter 21 is provided on the rear surface of the engine 20, and the recoil starter 21 rotates the magnet by pulling the grip portion 21a to generate high voltage in the coil. Ignite according to the vertical movement of the piston. Thereby, the operator can start the engine 20 by operating the recoil starter 21 manually.

  As shown in FIG. 2, the blower 30 is basically a centrifugal fan case 31 and a fan 32 disposed in the fan case 31. The fan 32 has a fan axis at its center The fan shaft 33 is connected to the output shaft of the engine 20 so as to be rotationally drivable.

  The fan case 31 is composed of a fan storage portion 31 a for storing the fan 32 and an upper passage 31 b. The fan storage portion 31a and the upper passage 31b communicate with each other, and air pressurized by the fan 32 is sent to the upper passage 31b. Further, an air intake 34 is provided on the side of the rack and mount 10 of the fan case 31.

  External air is drawn from the air intake 34 through the space between the blower 30 and the backrest frame 10, and given a predetermined speed and pressure by the fan 32, to be accelerated and pressurized. The pressurized air passes through the upper passage 31 b of the fan case 31 and is jetted from the discharge port 35 to the injection pipe 40.

  The discharge port 35 of the blower 30 is formed of a flexible pipe such as rubber, and is bent so as to protrude horizontally in the lower back of one side of the worker carrying the blower work machine 1 There is. The injection pipe 40 is connected to the discharge port 35.

  With such a configuration, as shown in FIG. 3, the blower working machine 1 can carry out the work of putting a worker on the back and collecting fallen leaves, wastes, etc. When the engine 20 is started, a crank shaft (output shaft) (not shown) is rotated, and the fan 32 is rotated via the fan shaft 33 connected to the crank shaft. The air is introduced into the fan case 31 to generate a wind, and the wind is ejected from the discharge port 35.

Next, the configuration of the injection pipe 40, which is the main part of the present invention, will be described with reference to FIGS.
As shown in FIGS. 3 and 5, the injection pipe 40 is composed of a connecting portion 41, a bellows-like flexible pipe 42, an injection pipe 43, a grip 44, and an injection direction control member 6.

  The connection portion 41 is a portion for attaching the injection pipe 40 to the discharge port 35, and the connection portion 41 is fitted to the discharge port 35 and fixed by a binding band or the like. The flexible tube 42 is formed in a bellows shape, and its direction can be freely changed. That is, it is possible to bend or twist the flexible pipe 42. Further, the end of the flexible pipe 42 is connected to the injection pipe 43. As a result, the injection pipe 43 can be freely changed in direction with respect to the blower 30, and the worker can turn the injection pipe 43 toward the location where the user wants to blow air while carrying the blower 30 on his back. In the present invention, the flexible tube 42 is formed in a bellows shape, but the configuration of the flexible tube 42 is not limited to this, and for example, it can be made of a flexible material.

The injection pipe 43 is formed in a cylindrical shape, and a grip 44 is provided on the outer peripheral surface of the middle portion of the injection pipe 43, and the injection direction control member 6 is provided at the tip of the injection pipe 43.
The grip 44 is rod-shaped in the present embodiment, but the shape is not limited and may be L-shaped or U-shaped. Thus, the operator holds the grip 44 and adjusts the injection direction to work.

  The injection direction control member 6 is formed in a cylindrical shape with a bottom, one end is opened and detachably attached to the tip of the injection tube 40, the other end is closed like a lid, and at least one injection is made on the side The hole is open. By changing the injection direction control member 6 in accordance with the operation, it is possible to adjust the air volume, the air direction, the spread, etc. which are injected from the tip.

  In order to make the injection direction control member 6 attachable to and detachable from the injection pipe 43, as shown in FIG. In the configuration, it is arranged every 180 degrees). On the other hand, fitting grooves 6a and 6a are formed on the outer periphery of one end (opening side) of the jet direction control member 6 so as to protrude outward in accordance with the position and shape of the convex portions 43a and 43a. The fitting groove 6a extends from the open end of the jet direction control member 6 to a bottom side in parallel with the axis and is bent in the circumferential direction and is provided with a constricted portion 6b at its tip.

  In this way, fitting the fitting grooves 6a and 6a at the positions of the convex portions 43a and 43a and inserting the injection direction control member 6 in the axial direction, and when it reaches the far end, it rotates in the circumferential direction to go over the constricted portion 6b. Therefore, the injection position can be maintained at the rotational position and the injection direction can be maintained. When the injection direction control member 6 is removed, it is pulled in the axial direction after being rotated in the reverse direction. In addition, since convex part 43a * 43a and fitting groove 6a * 6a are arrange | positioned so that phases may differ 180 degrees, the jet direction of the jet hole (61 * 62) is made 180 degrees by changing a phase at the time of attachment. You can shift it. Further, by setting the predetermined angle to 90 degrees, the jetting direction can be shifted by 90 degrees. By changing the ejection direction, it is possible to easily change the mounting position according to the ease of work of the operator, such as forward movement, reverse movement, or lateral movement. In addition, the attachment or detachment configuration of the injection direction control member 6 with respect to the injection pipe 43 is not limited, and a flange may be formed and fixed, or may be a screw type.

  Then, at least one injection hole is opened on the side surface of the injection direction control member 6. That is, as shown in FIG. 4 and FIG. 6, one injection hole 61 opening in the radial direction with respect to the cylindrical axial center is opened. The injection holes 61 are fan-shaped and can be injected with a predetermined width as a long hole along the circumference.

  By this configuration, when cleaning a wall or a sidewalk or a step between the sidewalk and the road, or in a groove or in a portion having unevenness, as shown in FIG. By directing the holes 61 to the corner where the wall intersects with the ground and advancing the jet along the wall with the jet direction parallel to the wall, it is possible to easily blow away and collect fallen leaves, dust and the like. At this time, unlike the prior art, there is no need to press the tip of the injection pipe 43 against the ground, and the cleaning operation can be performed efficiently without scattering in the opposite direction.

  Further, if the number of the injection holes 61 is one, the injection range is narrow, and if it is a long hole in the circumferential direction, the discharge pressure is different at the center and both sides, as shown in FIG. .. May be arranged along the circumferential direction. In this case, the injection hole 62 can have an opening area smaller than that of the injection hole 61 to suppress a decrease in the injection output (wind force).

Further, as shown in FIG. 8, the injection direction control member 6 may be provided with two injection holes 61 and 63 in the diameter direction. One of the injection holes 61 has the same large opening area as described above and is used to blow away dust and the like, and the other injection hole 63 has an opening area smaller than the injection hole 61 and is used to reduce reaction force.
By thus arranging the injection holes 61 and the injection holes 63 opposite to each other, the wind sent from the blower 30 blows away dust and the like by the wind injected from the injection holes 61 at the time of operation. At this time, a reaction force is generated by the injection from the injection hole 61, but the reaction force is reduced because the injection is also performed in the opposite direction from the injection hole 63 opened on the opposite side of the injection hole 61. The ability to support 40 can be reduced.

  Further, as shown in FIG. 9, the injection direction control member 6 is provided with injection holes 61 and 64 in each of the cylinders as double cylinders, and one cylinder is rotated relative to the other cylinder to perform injection. The opening area where the hole 61 and the injection hole 64 overlap can be changed, and the injection force and directivity can be changed. The injection holes 62, 62,... And the injection holes 63 can also be configured to be able to change the overlapping area.

  The injection direction control member 6 can also be configured to be able to change the injection direction from the opening at the tip. That is, as shown in FIG. 10, in the injection direction control member 6, one of the cylinders is the fitting portion with the injection pipe 43 similarly to the above, the other is the injection hole 65, and the injection hole 65 is in the axial direction The wind direction plate 70 is pivotally supported at one end of the injection hole 65 as an opening face in the diagonal direction. The wind direction plate 70 has a size in accordance with the size of the injection holes 65, so that the direction of injection can be changed or closed by rotating. Further, a spring 71 is interposed between the wind direction plate 70 and the jet direction control member 6, and is urged in a direction to open the wind direction plate 70. The wind direction plate 70 is in a state in which the wind direction plate 70 is at maximum open parallel to the axis. Furthermore, one end of a wire 72 is connected to the wind direction plate 70, and the other end of the wire 72 is connected to an adjustment lever 73 provided in the vicinity of the grip 44. The adjustment lever 73 can be held at an arbitrary rotation position so that the operator can easily rotate and operate.

  In such a configuration, when the adjustment lever 73 is opened at the maximum at the time of the work of blowing air by the blower 30, the injection pipe 43 jets in a straight direction in the axial direction. When the adjustment lever 73 is turned to turn the wind direction plate 70 in the closing direction via the wire 72, the injection direction is gradually bent, and in a state where the wind direction plate 70 is turned 90 degrees, Can be injected in the perpendicular direction. If it further turns, it can be jetted in the front direction, but since it will increase the load of the motor when it is closed, the adjusting lever 73 can be turned to the position where it does not close.

  As described above, the discharge direction from the injection pipe 43 can be easily changed by operating the adjustment lever 73 disposed at hand, so that the dust is changed by changing the wind direction from the front to the lower as it approaches the wall. It becomes possible to collect without scattering up to the surroundings and so forth.

  Further, the jet direction control member 6 can be cleaned in parallel with the ground with a predetermined width. That is, as shown in FIGS. 11 (a) and 11 (b), the jet direction control member 6 is composed of a fitting portion 6c, a bent portion 6d and a discharge portion 6e. One end of the fitting portion 6c is engaged with and fixed to the tip of the injection pipe 43, and the other end is connected to the bent portion 6d. The angle between the bent portion 6d, the fitting portion 6c and the discharge portion 6e can be changed. Specifically, a cylindrical fitting portion is formed on the end side surface of the fitting portion 6c and the side surface on the base side of the discharge portion 6e so as to be rotatably connected. The cylindrical fitting portion is provided with a detent mechanism that can be held at an arbitrary rotation angle. The discharge portion 6e is formed in a cylindrical shape with a closed end, and a plurality of injection holes 66, 66... Are opened on the side surface at predetermined intervals in the axial direction. However, the fitting portion 6c, the bent portion 6d, and the discharge portion 6e can be integrally configured to be formed in a "H" shape.

  In such a configuration, the fitting portion 6c is fitted and fixed to the tip of the injection pipe 43, and the angle adjustment is performed at the bending portion 6d so that the discharge portion 6e is parallel to the ground according to the height and work posture of the operator. Do. Then, while the blower 30 is operated and jetted from the jet holes 66, 66... While the discharge part 6e is parallel to the ground and directed in the direction orthogonal to the work advancing direction. Therefore, it is not necessary for the operator to work while swinging the tip of the injection pipe 43 to the left and right, and it becomes possible to perform cleaning work of a certain width only by going straight.

  Further, instead of the injection holes 66, it is also possible to provide a nozzle 67 capable of changing the discharge direction. That is, as shown in FIG. 11C, the base of the nozzle 67 is formed in a spherical shape so that the angle of the discharge hole can be changed vertically and horizontally. In this manner, the plurality of nozzles 67 arranged on the left and right can be directed in a certain direction, directed in the center, or extended in the left and right, so that dust etc. can be easily collected according to the working condition. You can do so.

  Moreover, it is also possible to provide the earthing body 80 which can maintain a predetermined distance between the injection direction control member 6 and the ground. That is, as shown in FIG. 13, the grounding body 80 is configured by rolling elements such as wheels or balls, or a sled having a small sliding resistance, and is attached to the tip of the jet direction control member 6. In the case of the injection direction control member 6 shown in FIG. 11, the work can be performed more stably by attaching it to the base side and the tip side of the discharge part 6e.

  With this configuration, the distance between the ground and the injection direction control member 6 becomes constant, the wind power injected toward the ground also becomes constant, the wind direction can be stabilized, and the dust and the like are diffused or scattered. It can be easily collected in a certain direction. Further, by providing the grounding body 80, the weight of the injection direction control member 6 is increased, and the force for suppressing the reaction force against the injection can be reduced. In addition, it is not necessary to adjust the amount of pressure applied to the ground side.

  As described above, the engine 20 as a prime mover, the blower 30 rotationally driven by the engine 20, and the discharge pipe 35 of the blower 30 are connected to the injection tube 40 for injecting the wind sent from the blower 30. In the blower working machine 1 having the above, the injection pipe 40 is formed in a cylindrical shape, and the bottomed cylindrical injection direction control member 6 can be detachably attached to the tip of the injection pipe 40, The injection direction control member 6 can be selected and attached according to the work form, or the injection direction control member 6 can be removed and injection can be straight as in the prior art. Further, since at least one injection hole 61 is opened on the side surface of the injection direction control member 6, the injection can be performed in the direction perpendicular to the axial center direction of the injection tube 40, and along the wall or the step portion. Dust and fallen leaves can be blown away to clean the corners. Further, by providing a plurality of injection holes 61, it is possible to widen the injection range and fly dust and fallen leaves with substantially uniform wind power.

  Further, in the injection direction control member 6, the injection holes 61 having a large opening area and the injection holes 63 having a small opening area are disposed to face each other in the diameter direction. The reaction force to the injection from the injection hole 61 having a large opening area can be reduced, and the labor for the worker to support the injection tube 40 can be reduced.

  Further, since the wind direction plate 70 is provided so as to be openable and closable at the bottom of the injection direction control member 6, the injection direction can be changed by changing the angle of the wind direction plate 70, and the operator holds the injection tube 40. The work direction can be enhanced by rotating the wind direction plate 70 in accordance with the angle and the angle with respect to the ground, and adjusting it to the most efficient and non-scattering jet direction.

  Further, the injection direction control member 6 is configured to be bendable, and a plurality of injection holes 66, 66 ... are opened in parallel with the axial direction on the side surface of the discharge portion 6e at the tip, so the discharge portion 6e is ground Therefore, it is not necessary to work while swinging the injection tube 40 from side to side, and it becomes difficult to scatter dust etc. from side to side. It is possible to perform constant cleaning work and improve work efficiency only by going straight.

  Further, since the ground contact body 80 is provided at the tip of the injection direction control member 6, the work can be performed while keeping the distance between the injection direction control member 6 and the ground constant, and the injection hole 61 is closed. The injection force can be increased, the injection reaction force can not be increased, and the injection direction control member 6 can not be hit against the ground to cause damage, and can be sprayed on the ground with a constant injection pressure, so that high-quality work can be performed. It will be. In addition, the weight of the grounding body 80 can reduce the injection reaction force.

DESCRIPTION OF SYMBOLS 1 Blower working machine 6 injection direction control member 20 engine 30 blower 40 injection pipe 61.62.63.64.65.66 injection hole 80 grounding body

Claims (2)

A blower working machine comprising: a prime mover; a blower rotatably driven by the prime mover; and an injection tube connected to a discharge port of the blower for injecting a wind sent from the blower, the injection tube comprising a cylinder The bottomed cylindrical injection direction control member is removably attached to the tip of the injection tube, and the injection hole having a large opening area and the injection hole having a small opening area are attached to the side surface of the injection direction control member. A blower working machine characterized in that the holes are diametrically opposed . The air blower work machine according to claim 1, wherein a grounding body is provided at the tip of the jet direction control member.

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