JP2011074855A - Blower working machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve workability by adapting to various work situations without replacing a nozzle in a blower working machine. <P>SOLUTION: The outlet side of the nozzle is made of soft material, and a shape retaining member manually deformed and retaining a deformed state is arranged at the opening end of the nozzle. Thereby, the opening end is deformed into various shapes. If air spreading in a lengthwise direction is required when a worker performs work along a wall or blows air to a narrow place, it is enough to deform the nozzle into an elliptical cross-sectional shape so that a longitudinal direction is set perpendicular to the ground. Since labor for inclining the blower working machine or replacing the nozzle is not required, workability is improved. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to an improvement of a blower working machine used for work for blowing fallen leaves, cut grass, and the like by rotating a fan by a drive source and blowing out sucked air from a discharge port.

2. Description of the Related Art Conventionally, a blower working machine of this type has a structure in which a fan in a work machine is rotated by an internal combustion engine or an electric motor, and air sucked from an intake port of the housing is ejected from an exhaust port of the housing. In such a blower working machine, as shown in Patent Document 1, a pipe and a nozzle are attached to the discharge port, and the air pressure is directed to fallen leaves and cut grass while holding the blower working machine by holding the handle part. Work by blowing them through.
In such a blower working machine, methods such as use of pipes and nozzles having different shapes or changing the mounting angle are performed according to the working situation.

JP 2009-91719 A

In the conventional blower working machine, the user must repeat the removal and attachment of the pipe and the nozzle during the work, and the workability is poor. Also, if the pipe or nozzle is replaced, it may be lost.

  An object of the present invention is to make it possible to adapt to various working situations without replacing nozzles and to improve workability.

  According to one aspect of the present invention, a driving device, a fan rotated by the driving device, a discharge port for discharging air generated by the fan, and a pipe attached to the discharge port directly or to the discharge port. In a blower having a nozzle opening provided with a nozzle opening for guiding the discharged air in a desired direction, the nozzle can deform at least the cross-sectional shape near the opening and retain the deformed cross-sectional shape It is configured to be possible.

  According to another feature of the invention, it is desirable that the nozzle is provided with a shape retaining material capable of retaining the shape.

  According to still another aspect of the present invention, it is desirable that the shape retaining material is provided along the edge of the nozzle opening.

  According to the first aspect of the present invention, since the nozzle can be deformed at least in the cross-sectional shape near the opening and can retain the deformed cross-sectional shape, it can be adapted to various working situations without replacing the nozzle.

  According to the second aspect of the invention, since the nozzle is provided with the shape holding material capable of holding the shape, the nozzle shape changed during the operation can be held, and the workability is improved.

According to the invention of claim 3, since the shape maintaining material is provided along the edge of the nozzle opening, the cross-sectional shape of the nozzle opening can be effectively held.

It is a nozzle vicinity partial cross section figure which shows the air blowing working machine which concerns on embodiment of this invention. (A) is a perspective view which shows the shape of the nozzle shown by FIG. (B) is a figure which shows the state which crushed and deformed the nozzle shown by (a) from the up-down direction. (A) is a perspective view which shows the shape of the nozzle which concerns on another embodiment of this invention. (B) is a figure which shows the deformation | transformation state of the nozzle shown by (a). It is a figure at the time of applying the flexible nozzle which concerns on another embodiment of this invention to the usage type as a suction device.

  Examples of the blower working machine of the present invention will be described below.

  FIG. 1 is a partial sectional view of an embodiment of the present invention. 2A is a perspective view showing the shape of the nozzle shown in FIG. 1, and FIG. 2B is a state where the nozzle shown in FIG. FIG. The blower working machine 1 mainly includes a main housing 2 and a drive source (not shown) including a two-cycle engine housed in the main housing 2 and a fan housing 3 and a fan housing that house a centrifugal fan 14 for blowing air. 3, the fan cover 4 covering the suction port formed in 3, and the discharge pipe portion 9 for discharging the wind generated by the centrifugal fan 14. A handle portion 11 for carrying the blower working machine 1 and holding it during work is formed on the upper portion of the main housing 2.

  The blower working machine 1 is roughly divided into a main body portion and a discharge pipe portion 9, and the discharge pipe portion 9 includes a discharge pipe 5 formed in the housing 2, a pipe 6 provided in the discharge pipe 5, and a pipe 6. The example comprised by the nozzle 8 provided in the opposite side to the connection side with the discharge pipe 5 is shown. Each of these components is formed in a cylindrical shape having a cavity for allowing an air flow to pass through the inner periphery, and an air passage that sends the air flow from the blower fan to the tip side by connecting each of these components. Is configured.

  However, the discharge pipe portion 9 is not limited to this configuration. In addition to the discharge pipe 5, any combination of pipes 6 and nozzles 8, any number of pipes 6, or only nozzles 8 may be used. good. The discharge pipe 5, the pipe 6 and the nozzle 8 of the main housing 2 are formed with connecting portions 7a and 7b for connecting to each other, and are configured to be detachable via these. Specifically, with respect to the connecting portion 7a between the discharge pipe 5 and the pipe 6, the discharge pipe 5 is formed with a convex portion, and the pipe 6 is formed with a groove 15 and a step extending from the end portion. By rotating the 6 and the discharge pipe relative to each other, the convex portion gets over the step and engages with the groove 15 so that each is stably held. As for the connecting portion 7b of the pipe 6 and the nozzle 8, a step portion 16 having a small outer diameter is formed at the end portion on the pipe 6 side, and a step portion 18 having a large outer diameter is formed at the end portion of the nozzle 8, and these are fitted. By combining, it can be attached and detached.

  In FIG. 2A, the cylindrical portion 17 of the pipe 6 is integrally formed with ribs for preventing slipping and improving strength around it, and the nozzle 8 is attached to the side opposite to the main body. The pipe 8 is made of a hard resin and has a circular cross section. The nozzle 8 is made of a flexible material, is made of an elastic body such as rubber, a synthetic resin softer than a pipe, and is similarly formed in a circular cross section. Here, the opening end (nozzle opening) 8a of the nozzle, which is the end of the air passage, has a shape made of wire, high-density polyethylene, etc., having flexibility and a property of maintaining the shape after deformation. A member 12 is provided along the edge.

  The nozzle 8 and the shape holding member 12 can be deformed by having flexibility, and the nozzle 8 and the shape holding member 12 try to maintain the shape in a state of being deformed by the shape holding member 12, so that the nozzle can maintain an arbitrary shape after the deformation. it can.

  In the nozzle 8, the open end 8 a provided with the shape holding member 12 protrudes in the radial direction from the cylindrical portion 8 b constituting the air passage portion to form a bulging shape. The opening end portion 8a is improved in operability because it is caught by a finger when the opening end portion 8a of the nozzle 8 is crushed by hand, and is used as a guide when air blowing work is performed with the nozzle 8 along the ground or the like. To play a role.

  Since the shape holding member 12 is disposed inside the bulging shape of the open end 8a and is covered with the resin material, excessive deformation when being crushed is suppressed.

  FIG. 2B shows a state in which the nozzle 8 is crushed from the vertical direction to have an elliptical cross section. The cross section of the nozzle 8 can shift to an elliptical shape with respect to the circular shape before the deformation, and can correspond to various working forms. As described above, the opening end portion 8a of the nozzle 8 can be deformed into various shapes depending on the bending method, and is configured to be held by the shape holding member 12 in a state deformed by hand.

  The operation of the blower working machine according to this embodiment will be described below.

  The blower working machine holds the main body by gripping the handle portion 11 formed in the main housing 2. Here, by pulling the throttle trigger 10 that can be operated with the handle portion 11 being gripped, the drive source is operated and converted into the rotational operation of the centrifugal fan 14. The centrifugal fan 14 sucks air from the axial direction by rotating operation and discharges air toward the outer side in the circumferential direction, and blows outside through the discharge pipe 5, the pipe 6, and the nozzle 8 (opening end 8a of the nozzle). I do.

  Here, when it is desired to blow air over a wider range along the ground, the work may be carried out by deforming it into an elliptical cross section in which the longitudinal direction is horizontal to the ground. In addition, when working along the wall or blowing air in a narrow place, such as when blowing in the vertical direction, it may be deformed into an elliptical cross section so that the longitudinal direction is perpendicular to the ground, This eliminates the need to incline the blower working machine or replace the nozzle, thereby improving workability.

  Moreover, the discharge pipe part 9 is comprised with the combination of the hard pipe 6 and the soft nozzle 8 which has flexibility, and an air flow passes through the inside of the hard pipe 6 to the exit vicinity, and the vicinity of an exit Passing through the deformed nozzle 8 alone, it suppresses excessive deformation as compared with the case where the entire discharge pipe portion 9 is flexible, has good operability, and blows fallen leaves, cut grass, etc. It is possible to generate an air flow suitable for

  In this embodiment, since the shape holding member 12 is provided at the opening end 8a, the deformed shape can be maintained, and workability can be improved. When the operator needs to blow the desired air, it can be deformed by crushing by hand or by pressing it against the ground. Since it becomes possible to correspond to a form, workability | operativity can be improved.

  In addition, this invention is not limited to the above-mentioned embodiment, What changed variously in the range described in the claim is also contained in the technical scope of this invention.

  For example, the nozzle 8 of the present embodiment is formed of a flexible material, and the shape holding member 12 is arranged along the end surface of the opening end 8a. For example, the nozzle 8 may be deformed as shown in FIG.

  The nozzle 108 shown in FIG. 3A is configured by changing the connection angle of each of a plurality of members 108b formed in a plate shape. As shown in FIG. 3B, the nozzle 108 can change the cross-sectional shape by changing the connection angle of the plurality of plate-like members 108b, so that the connection angle is maintained at the connection portion. A shape holding member 112 is provided. Even with such a configuration, it is possible to cope with various working conditions without requiring troublesome work such as changing the kind of nozzle and the mounting angle between the pipe 6 and the nozzle.

  In the present embodiment, the nozzle 8 whose cross-sectional shape can be changed is attached to the discharge unit 5 of the blower working machine 1 so that it can be used for the blower work. However, the application of the present invention is not limited thereto. Absent. For example, the fan working unit 1 is opened on the fan housing 3, the pipe 206 and the nozzle 208 are attached to the suction port, and the dust collecting bag 13 is attached to the discharge part 5. May be used. Even in such a case, as shown in FIG. 4, the nozzle 208 is configured to include a member having flexibility and capable of holding the shape, thereby performing suction in a wide range along the ground. For example, when it is desired to suck the tip of the gap, it is possible to improve workability simply by changing the nozzle shape.

In addition, it goes without saying that the material, shape, quantity, arrangement, etc. of each component can be changed as appropriate.

DESCRIPTION OF SYMBOLS 1 Blower working machine 2 Main housing 3 Fan housing 4 Fan cover 5 Discharge pipe 6 Pipe 7a Connection part 7b Connection part 8 Nozzle 8a Open end 8b Cylindrical part 9 Discharge pipe part 10 Throttle trigger 11 Handle part 12 Shape holding member 13 Dust bag 14 Centrifugal fan 112 Shape retaining member

Claims (3)

A drive device, a fan that is rotated by the drive device, a discharge port that discharges air generated by the fan, and a pipe that is attached to the discharge port directly or via a pipe that is attached to the discharge port and discharged. In a blower having a nozzle provided with a nozzle opening for guiding air in a desired direction,
The air blower according to claim 1, wherein the nozzle is configured to be capable of deforming at least a cross-sectional shape in the vicinity of the opening and holding the deformed cross-sectional shape.   The blower working machine according to claim 1, wherein the nozzle is provided with a shape holding material capable of holding the shape.   The blower according to claim 2, wherein the shape retaining material is provided along an edge of the nozzle opening.

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