JP2566083Y2 - Vacuum type blower dust adjusting unit - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for adjusting a suction part of a vacuum type blower which can adjust suction force and eliminate pebbles at a hand side of a dust suction tube communicating with a blower case.

[0002]

2. Description of the Related Art Conventionally, as shown in Japanese Utility Model Application Laid-Open No. 63-71854, it is known to provide a ventilation hole in a hand pipe of a suction hose so that suction force can be adjusted. As disclosed in Japanese Patent Application Laid-Open No. 59-10168, it is known to provide a hole on a lower surface of an air passage on the exhaust side of a main body case so as to remove pebbles and the like.

[0003]

However, in the former structure, when a hard foreign substance such as pebbles is sucked in, it cannot be removed from the vent hole and separated. There is a problem in that pebbles and the like sucked from the mouth hit the impeller of the blower, thereby damaging the impeller and the like.

[0004]

SUMMARY OF THE INVENTION The present invention has been devised in order to solve such a problem, and to provide a simple structure that can be easily adjusted, so that the present invention can be suitably implemented. In the vacuum type blower which is configured by connecting and communicating the dust suction cylinder and the exhaust cylinder respectively,
A plurality of parallel long holes are formed on the lower peripheral surface of the cylinder at hand near the blower case of the dust suction cylinder so that hard foreign substances such as pebbles can be removed, and opening and closing adjustment can be performed to adjust opening and closing of all the long holes. The plate is formed in a curved shape along the inner peripheral surface of the cylindrical portion, and the opening / closing adjustment plate is configured to be movable and adjustable in the longitudinal direction of the long hole by the tightening bolt inserted into the long hole and the opening / closing adjustment plate. Things.

[0005]

Therefore, when the opening / closing adjustment plate is moved and adjusted on the hand side along the inner peripheral surface of the cylindrical portion by the tightening bolt, the opening degree of all the long holes can be adjusted, and the suction force is adjusted. If there are many pebbles, etc., by opening all the long holes appropriately,
Hard foreign matters such as pebbles sucked from the tip end of the dust-absorbing cylinder are effectively removed from the slots on the lower surface side before being sucked into the blower case.

[0006]

FIG. 1 is a side view of a vacuum type blower, a part of which is omitted. A portable machine A equipped with grip portions 7a and 7b on the upper and rear sides, respectively, is a blower case 1.
An engine 9 having a recoil starter section 8 and a fuel tank 10 are connected to the rear of the blower case 1. A suction port 11 is provided on a front surface of the blower case 1 in which a suction fan is installed, and a discharge port 12 is provided on a lateral side. A curved exhaust tube 3 or a straight exhaust tube is connected to the air outlet 12, and a dust suction bag can be connected to the exhaust tube 3 of the curved tube so as to have the same structure as the conventional structure. A circumferential flange 13 protrudes from the outer periphery of the suction port 11 on the front surface of the blower case 1 and a circumferential flange 14 for mounting an additional intake cover protrudes from the outer periphery of the flange 13. And a locking member 15 having a recess or a groove on the inner peripheral surface of the flange 14.
As shown in FIG. 4, four a and 15b are provided alternately at intervals.

A dust suction tube 2 is connected to a suction port 11 on the front surface of the blower case 1. The dust suction tube 2 has a small diameter having a large-diameter tube portion 2a on one side and a plurality of ribs 16 on the other side. The outer surface of an end surface of the cylindrical portion 2a, which is composed of a dust collecting tube on the hand side serving as the cylindrical portion 2b and two other dust collecting tubes 2c and 2c and can be fitted to the flange 13 on the front surface of the blower case 1, Each locking body 15 b on the inner peripheral side of the flange 14, 1
As shown in FIGS. 6 and 7, four engaging members 18a and eight engaging members 18b each having a stopper 17 capable of engaging with the cylindrical member 5a are formed alternately at intervals.
b On the lower peripheral surface on the side closer to b, five long holes 4 extending in the axial direction of the cylindrical portion and having a lateral width capable of passing hard foreign matters such as pebbles are formed in parallel, An opening / closing adjusting plate 5 capable of adjusting opening / closing of all the long holes 4 is formed in a curved shape along the inner peripheral surface of the cylindrical portion 2a, and is inserted into a central long hole 4 and a washer 19 that can abut the outer surface thereof. Knob bolt 6 for attachment
Is screwed into a nut 6a fixed to the opening / closing adjustment plate 5.

A rib 20 is formed on the outer periphery of the dust-absorbing cylinder 2c, which is formed of a polyethylene material, near the one end, and is formed in a protruding shape so as to be inclined obliquely from the side with respect to the axial direction of the cylinder. A groove-shaped concave streak 21 is formed on the outer periphery of the center portion in the lateral width direction, and when the portion of the concave streak 21 is cut with a cutter or the like, it can be separated from the portion of the concave streak 21 as shown in FIG. As shown in FIG. 1, when one end of a dust-absorbing cylinder 2c having a cut end is fitted to the other end of a dust-absorbing cylinder 2c having one end fitted to a cylindrical portion 2b on the hand side, when working, Even if the main body A is not tilted so much, the dust can be sucked so that the tip end of the dust suction tube is along the ground.

Therefore, as shown in FIG. 10, the cylindrical portion 2a is fitted to the flange 13 until the engaging members 18a and 18b are in contact with the front surface of the blower case 1 between the flanges 13 and 14, and the cylindrical portion 2a is pointed by an arrow from that state. When rotated in the direction a, as shown in FIG. 11, the stopper 17 abuts and the engaging members 18a and 18b engage with the locking members 15b and 15a, respectively, thereby sucking the cylindrical portion 2a. When the work is carried while carrying the machine A while holding the grip portions 7a and 7b with both hands, the knob bolt 6 is loosened and the opening / closing adjustment is performed while moving along the long hole 4. When the plate 5 is moved along the inner peripheral surface of the cylindrical portion 2a,
The opening degree of all the long holes 4 can be increased as shown in FIG. 6 or reduced as shown in FIG. 9, so that the suction force can be effectively adjusted. If there are many pebbles, all the long holes 4
When the opening is made large enough, hard foreign substances such as pebbles sucked from the tip end of the dust suction tube 2c are effectively removed and removed from the long holes 4 on the lower surface side before being sucked into the blower case 1. Will be.

[0010]

As described above, according to the present invention, when the opening / closing adjustment plate (5) is moved and adjusted on the hand side along the lower inner peripheral surface of the cylindrical portion (2a) by the tightening bolt (6), The opening degree of the long holes (4) can be adjusted, so that the suction force can be effectively adjusted. In addition, when there are many hard foreign substances such as pebbles, all the long holes (4) are removed. By appropriately opening, hard foreign matters such as pebbles sucked from the tip end of the dust suction tube can be effectively removed from each of the long holes (4) on the lower surface before being sucked into the blower case (1). Thus, it is possible to prevent the fan and the like from being damaged by pebbles and the like, and it has a feature that it can be easily implemented and has a simple structure and can be suitably implemented.

[Brief description of the drawings]

FIG. 1 is a side view showing a blower according to an embodiment of the present invention.

FIG. 2 is a front view showing a view taken along the line II-II of FIG. 1;

FIG. 3 is a rear view showing a line III-III of FIG. 1;

FIG. 4 is a front view showing a blower case.

FIG. 5 is a front view showing a tubular portion.

FIG. 6 is a bottom view showing a view taken along the line VI-VI of FIG. 5;

FIG. 7 is a rear view showing a VII-VII line view of FIG. 6;

FIG. 8 is a sectional view showing a section taken along line VIII-VIII of FIG. 6;

FIG. 9 is a bottom view showing the operation state of FIG. 6;

FIG. 10 is an explanatory view showing a state in which the tubular portions are connected.

FIG. 11 is an explanatory diagram showing an operation state of FIG. 10;

FIG. 12 is a side view showing a part of the dust suction cylinder.

FIG. 13 is a side view showing a state in which the dust suction tube is divided.

[Explanation of symbols]

 A This machine 1 Blower case 2 Dust tube 3 Dust tube 2a Tube portion 4 Long hole 5 Opening / closing adjustment plate 6 Bolt

Claims (1)

(57) [Scope of request for utility model registration] 1. A vacuum type blower comprising a dust-absorbing cylinder (2) and a dust-discharging cylinder (3) connected to a blower case (1) of the portable machine (A), respectively. A plurality of parallel long holes (4) for removing hard foreign substances such as pebbles are formed in the lower peripheral surface of the cylindrical portion (2a) close to the blower case (1) close to the blower case (2). An opening / closing adjustment plate (5) capable of adjusting opening / closing of the hole (4) is attached to the cylinder (2
The opening / closing adjustment plate (5) is formed in a curved shape along the inner peripheral surface of (a), and the opening / closing adjustment plate (5) is formed by the elongated hole (4) and the tightening bolt (6) inserted into the opening / closing adjustment plate (5). 4) A dust-absorbing-portion adjusting device, wherein the device is configured to be movable and adjustable in the longitudinal direction.