JP2002086027A - Jet tube fixing band for air blow machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the jet tube fixing band of an air blow machine having a blower driven by an internal combustion engine and making a throttle wire easily detachable to the jet tube. SOLUTION: The jet tube fixing band of the air blow machine has the fastening band part, which fastens the periphery of the connection part of the jet tube provided to the air blow machine driven by the internal combustion engine to prevent the slip-off of the jet tube, and the wire holding part connected to the fastening band part to hold the throttle wire, which connects the internal combustion engine and a throttle lever, along the jet tube. The wire holding part (6) has a through-hole (8) into which the throttle wire (58) is inserted, and the through-hole (8) has a size enabling the throttle wire (58) to move in a lateral direction (L-R) with respect to the longitudinal center axial line (O-O) of the jet tube (54). A slot (10), which enables the throttle wire (58), extended obliquely (8) with respect to the longitudinal center axial line (O-O) of the jet tube (54), to insert in the through-hole (8), is formed to the part extending in the lateral direction (L-R) of the wire holding part (6).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blower of a blower for preventing a blower of a blower having a blower driven by an internal combustion engine from coming off, such as a power blower or a backpack type power sprayer. The present invention relates to a tube fixing band.

2. Description of the Related Art A blower having a blower driven by an internal combustion engine such as an air-cooled two-stroke engine has been known. Examples of such a working machine include a power blower that blows off dead leaves and garbage, and a backpack-type power sprayer that conveys and sprays granules such as fertilizer by airflow. Such a blower has a jet pipe through which the airflow generated by the blower flows.

For example, a conventional power blower 5 shown in FIG.
0, the power blower 50 includes a main body 80 provided with an internal combustion engine 52 and a blower 70;
It has a jet tube 54 extending forward from 0 through which the air flow generated by the blower 70 flows, and a handle portion 56 attached to an intermediate portion of the jet tube 54. In addition, the injection pipe 54 extends from the main body 80 to the handle portion 56.
Along the throttle of the internal combustion engine 52 (not shown)
A wire or the like (not shown) for opening / closing the throttle extends. The tip of the throttle wire 58
The throttle lever 6 provided on the handle portion 56
Connected to 0. The operator can handle the handle portion 56.
, The discharge port 54a of the injection pipe 54 is directed in a desired direction, and the throttle lever 60 is grasped with a finger to open and close the throttle, and the internal combustion engine 52
Adjust the output of.

[0003] As can be seen from FIG.
Is generally a bent tube section 54 extending from the blower 70.
b, a flexible pipe portion 54c attached to the tip of the bent pipe 54b, and the flexible pipe portion 5
4c, which has a straight extending distal end tube portion 54d attached to the distal end thereof, and these are fitted and connected to each other. Heretofore, a band 62 has been used to tighten around the connecting portion so that these tube portions do not come off.
The main body 80 is disposed on one side L (the side of the operator carrying the power blower 50) with respect to the longitudinal center axis OO of the injection pipe 54. Connection surface 56a to handle portion 56
Is disposed on the other side R (far side to the worker) with respect to the longitudinal center axis OO of the injection tube 54 so as not to disturb the worker. Therefore, the throttle wire 58 extends obliquely across the injection pipe 54 from the internal combustion engine 52 to the throttle lever 60. The throttle wire 58 is fixed to the injection tube 54 with a wire 64 or the like so that the throttle wire 58 is not caught during operation and does not rub against the injection tube 54.

[0004]

The throttle wire needs to be attached and detached for maintenance and the like, and the attaching and detaching operation is desirably simple, and preferably can be attached and detached without tools. In order to reduce the number of manufacturing steps and manufacturing costs, it is desirable that the number of parts be as small as possible. Therefore, the present invention can reliably fix the injection pipe of a blower having a blower driven by an internal combustion engine, and can easily attach and detach the throttle wire to and from the injection pipe as needed. The purpose of the present invention is to provide a band for fixing a jet pipe of a blower that can be used.

[0005]

SUMMARY OF THE INVENTION It is an object of the present invention to tighten a band around a connecting portion of a jet pipe provided in a blower driven by an internal combustion engine to prevent the blower from coming off. And a wire holding portion connected to the tightening band portion for holding a throttle wire connecting the internal combustion engine and the throttle lever along the injection pipe, wherein the wire holding portion has A through hole through which the throttle wire is inserted, the through hole having a size such that the throttle wire can move in a lateral direction with respect to a longitudinal center axis of the injection pipe, and the wire holding portion; The laterally extending portion is formed with a slot that extends obliquely with respect to the longitudinal center axis of the injection tube and that allows the throttle wire to be inserted into the through hole. It can be achieved by 噴管 fixing band of the blower working machine to be.

Further, the throttle wire may be inclined from one side to the other side with respect to the longitudinal axis of the injection pipe extending from the internal combustion engine of the blower to the throttle lever. When the slot is extended, the slot is preferably formed to extend obliquely from the other side to the one side with respect to the longitudinal center axis of the injection tube. . In the injection tube fixing band according to the present invention, the periphery of the connection portion of the injection tube is tightened by the tightening band portion to prevent the injection tube from coming off. An operator bends the throttle wire in the direction in which the slot extends, and inserts the throttle wire into the through hole of the wire holding portion through the slot. When released, the throttle wire returns to its original state and extends in the through hole in a direction crossing the slot. Similarly, when removing the throttle wire, the operator bends the throttle wire in the direction in which the slot extends, and moves the throttle wire out of the wire holding portion through the slot.

According to the present invention, since the slot is oriented obliquely with respect to the longitudinal center axis of the injection tube, the throttle wire is prevented from coming off through the slot. In addition, the attachment / detachment of the throttle wire can be performed simply by passing the slot through the slot without using a tool. Further, since the fixing of the injection pipe and the holding of the throttle wire can be performed by one injection pipe fixing band, the number of parts can be reduced. Further, when the throttle wire is disposed to extend obliquely from one side to the other side with respect to a longitudinal axis of the injection pipe from the internal combustion engine to the throttle lever,
By forming the slot obliquely with respect to the longitudinal center axis of the injection tube in a direction opposite to the direction in which the stalled wire extends, it is possible to reliably prevent the throttle wire from coming off.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
Various embodiments of the jet tube fixing band of the blower according to the present invention will be described. The injection tube fixing band 2 according to the present embodiment has a blower 70 driven by an internal combustion engine 52, and a throttle (not shown) of the internal combustion engine 52 is driven by a throttle lever 60 via a throttle wire 58. It can be used to fix the spouts of various blowers that are connected. In the present embodiment, as an example, FIG.
A case in which the conventional power supply blower 50 is attached to the injection pipe 54 will be described. FIG. 1 is a plan view of a jet tube fixing band according to the first embodiment, and FIG. 2 is a side view of the band, showing a state where the band is attached to the jet tube. Further, FIG.
FIG. 2 is an end view of the jet tube fixing band according to the first embodiment. 1 and 2 show a connecting portion between the bent pipe portion 54b and the flexible pipe portion 54c of the injection pipe 54. The flexible pipe portion 54c and the bent tube portion 54b are fitted and connected to each other, and the connection portion is tightened and fixed from the outer peripheral side by the injection tube fixing band 2 according to the present embodiment. ing.

As can be seen best from FIG. 3, the injection tube fixing band 2 according to this embodiment is
A tightening band portion 4 for tightening the periphery of the connection portion of the injection pipe 54, and an appropriate connecting portion between the internal combustion engine 52 and the throttle lever 60 provided continuously above the tightening band portion 4; And an annular wire holding portion 6 for inserting and holding a throttle wire 58 made of a resilient Bowden cable. The tightening band portion 4 has a circular annular shape having the same shape as the cross section of the injection tube 54. Its inner diameter is slightly smaller than the outer diameter of the injection tube 54, so that when installed, the injection tube 54 is securely tightened. In addition, a through hole 8 is formed inside the annular wire holding portion 6 to constitute a wire receiving area for receiving the throttle wire 58. The through hole 8 has a long elliptical annular shape that is long in the lateral direction LR. The circular space inside the tightening band portion 4 and the through hole 8 in the annular wire holding portion 6 form an overall figure of eight.

As shown in FIG. 1, a slot 10 is formed on the upper surface of the annular wire holding portion 6 for attaching and detaching the throttle wire 58 to and from the through hole 8. The slot 10 extends over the entire width of the annular wire retaining portion 6 so that the throttle wire 58 can pass therethrough. As shown in FIG. 3, the intermediate portion 5 or the constricted portion between the tightening band portion 4 and the annular wire holding portion 6 is divided right and left along a vertical dividing line 12. I have. The intermediate parts 5 are fixed so as not to be separated from each other by screws 14 as holders extending in the lateral direction. The jet tube fixing band 2 is made of, for example, a material having appropriate flexibility such as a synthetic resin.

As can be seen from FIG. 1 and as already described, the throttle wire 58 extends from the main body 80 toward the throttle lever 60 along the longitudinal center axis O- of the injection tube 54. It extends obliquely to O. The slot 10 is generally oriented obliquely to the width direction of the injection tube fixing band 2 and in a direction intersecting the axis of the throttle wire 58 extending obliquely. Both end portions 10a of the slot 10
Is smaller than the outer diameter d of the throttle wire 58 in order to prevent the throttle wire 58 from coming off.
Further, when the operator pulls or pushes the throttle wire 58 by hand, the throttle wire 58 is deformed and formed to have a size that allows the passage. Since the circumference of the throttle wire 58 is covered with a sheath made of an elastic material,
When passing through the slot 10, it can be appropriately deformed. Accordingly, the lower limit of the width of the both end portions 10a is limited to the thinnest thickness of the throttle wire 58 crushed and flattened. The middle portion 10b of the slot 10 is connected to the throttle wire 58.
Is formed to have a size substantially the same as or slightly smaller than the outer diameter of the. Moreover, in order to make it easier for the throttle wire 58 having a circular cross section to pass therethrough, both edges forming the intermediate portion 10b form an arc, and a flat elliptical passage area is formed inside the intermediate portion 10b. ing. The intermediate portion 10b of the slot 10 extends obliquely with respect to the longitudinal center axis OO of the injection tube 54, whereas only the both end portions 10a are provided with the longitudinal center axis O-O.
It extends in the direction of O (width direction), and is substantially S-shaped overall.

The jet tube fixing band 2 according to the present embodiment operates as follows. The jet tube fixing band 2
To attach to the jet tube 54, remove the screw 14 and
The jet tube fixing band 2 is pulled to the left and right to bend, and the tightening band portion 4 is expanded to, for example, the bent tube 5.
The flexible pipe portion 54c of the injection tube 54, into which the tip of 4b is inserted, is passed through and moved to the connection portion. Next, the intermediate portion 5 of the injection tube fixing band 2 is fixed with the screw 14, and the periphery of the connection portion is securely tightened by the injection tube fixing band 2. When installing the throttle wire 58, the electric wire, and the like,
The obliquely extending throttle wire 58 (non-deflection position) is bent in the direction in which the slot 10 extends (deflection position) as shown by a chain line in FIG. Throttle wire 58
Press strongly. As a result, the sheath of the throttle wire 58 and the slot 10 side of the annular wire holding portion 6 are deformed. The throttle wire 58
Passes through the end portions 10a, easily passes through the wider intermediate portion 10b, and the throttle wire 58 is received in the through hole 8 in the annular wire holding portion 6. When the operator releases the hand, the throttle wire 58 moves in the lateral direction R in the oblong through hole 8 due to the elastic force thereof, returns to the non-deflected position, and extends in the direction in which the slot 10 extends. It extends in a direction W intersecting S (shown by a solid line in FIG. 1). Removal of the throttle wire 58 and the jet tube fixing band 2 is as follows.
It can be performed by the reverse process.

FIG. 4 shows a jet tube fixing band according to a second embodiment. The injection tube fixing band 2 shown in FIG. 4 has the same configuration as that shown in FIGS. 1 to 3 except that the shape of the slot 10 is different. Therefore, the same components are denoted by the same reference numerals,
Hereinafter, only the shape of the slot 10 will be described.
As can be seen from FIG. 4, the slots 20 of the injection tube fixing band 2 according to the second embodiment are straightened in the direction S intersecting the direction W in which the throttle wire 58 extends in the non-deflection position. Extending and have the same overall width. The width of the slot 20 is smaller than the outer diameter d of the throttle wire 58, and is set to a size that allows a passage resistance when an operator pulls the throttle wire 58, but allows the passage. Also,
The lower limit of the width of the slot 20 is the thickness of the flat shape when the resilient throttle wire 58 is maximally crushed.

When attaching and detaching the throttle wire 58, when the throttle wire 58 is bent from the non-deflected position to the bent position and pressed against the slot 20, the elastic sheath around the throttle wire 58 is deformed, The throttle wire 58 passes through the slot 20.

According to the injection tube fixing band 2 according to the first and second embodiments, the injection tube 54, the throttle wire 58, the electric wire and the like are fixed by one injection tube fixing band 2. Therefore, the number of parts and the number of work steps can be reduced. Further, according to the first and second embodiments, the through hole 8 is formed in the lateral direction L-
R is formed in an oblong shape, and the slot 1
Since 0 and 20 are formed in the direction S that intersects with the attached throttle wire 58, the accidental removal of the throttle wire 58 is prevented. Also,
The slot 10, the slot 10,
Since it can be carried out simply by passing through the passage 20, no tool is required and the work is easy. Further, according to the first embodiment, both end portions 10a of the slot 10 are provided.
However, the throttle wire 58 is narrower than the outer diameter d, and in the second embodiment, the whole is narrowed, so that the throttle wire 58 is more reliably prevented from coming off unexpectedly. You.

Further, in the first embodiment, the width of the middle portion 10b of the slot is wider than the both ends and slightly smaller than the outer diameter d of the throttle wire 58. The throttle wire 58 can be easily attached and detached by passing through both end portions 10a as a stopper.

The present invention is not limited to the above-described embodiments, and various changes can be made within the scope of the invention described in the claims, which are also included in the scope of the present invention. Needless to say, it is. In the embodiment, in particular, the throttle wire 58 is moved from one side L to the other side R with respect to the longitudinal center axis OO of the injection pipe 54 from the internal combustion engine to the throttle lever 60. A case has been described in which the power blower, which is disposed to extend obliquely, is used for joining and fixing the injection tube 54. However, the injection tube fixing band 2 may be used when the throttle wire 58 extends substantially straight along the longitudinal central axis OO of the injection tube 54. Also in this case, the throttle wire 58 intersects with the slots 10 and 20 to prevent the throttle wire 58 from accidentally coming off. In the first and second embodiments, the through-hole 8 is formed in an oblong shape in the lateral direction LR. However, the shape may be any shape as long as the throttle wire 58 can be moved in the horizontal direction between the non-deflection position and the deflection position. You may. Further, other than the horizontally long shape, the throttle wire 58 may be a square, a circle, an inverted triangle, or the like having a lateral width capable of moving in the lateral direction.

Further, the width dimension of the slot may be any size as long as it is smaller than the outer diameter of the throttle wire 58 and is within the range of the maximum flattened thickness of the throttle wire 58. You may.

According to the present invention, the injection pipe of a blower having a blower driven by an internal combustion engine can be fixed, and the throttle wire can be easily attached to and detached from the injection pipe. A jet tube fixing band for a blower can be provided.

[Brief description of the drawings]

FIG. 1 is a plan view of a jet tube fixing band according to a first embodiment, showing a state in which the band is attached to a jet tube.

FIG. 2 is a side view of the injection tube fixing band according to the first embodiment.

FIG. 3 is an end view of the injection tube fixing band according to the first embodiment.

FIG. 4 shows the injection tube fixing band according to the second embodiment.

FIG. 5 shows a conventional blower.

[Explanation of symbols]

 4 Tightening band portion 5 Intermediate portion 6 Wire holding portion 8 Through hole 10 Slot 10a Both ends of slot 10b Intermediate portion of slot 14 Holder 50 Blower 52 Internal combustion engine 54 Injection tube 58 Throttle wire 60 Throttle lever OO Injection Longitudinal central axis of the pipe LR lateral direction L one side R other side S slot extending direction W throttle wire extending direction d throttle wire outer diameter

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) A01M 7/00 A01M 7/00 M 9/00 9/00 A F Term (Reference) 2B052 BA03 BC03 BC08 EC19 2B121 CB09 CB24 CB28 CB55 3J022 DA11 EA33 EB14 EC14 EC17 EC22 ED22 ED28 FB06 FB12 FB17 GA03 GA12 GB44 GB53 3J039 AA03 BB01 CA04 LA10 4F033 RA14 RA20 RD01 RD10 RE08

Claims (4)

[Claims] 1. A tightening band portion (4) for tightening around a connecting portion of an injection pipe (54) provided in a blower (50) driven by an internal combustion engine (52) to prevent slipping. ) And a throttle wire (58) connected to the internal combustion engine (52) and the throttle lever (60), which is connected to the tightening band portion (4), is held along the injection pipe (54). A wire holding part (6) for the throttle wire (5).
8) has a through hole (8) through which the through hole (8) is inserted.
Means that the throttle wire (58) is
(L-) with respect to the longitudinal central axis (OO) of
R), and a portion of the wire holding portion (6) extending in the lateral direction (LR) is provided with the longitudinal center axis (OO) of the injection pipe (54). ), Wherein a slot (10) is formed which extends obliquely with respect to the throttle wire (58) so that the throttle wire (58) can be inserted into the through hole (8). Band. 2. The slot (10) is arranged with respect to the longitudinal center axis (OO) of the injection pipe (54) from the internal combustion engine (52) to the throttle lever (60). The throttle wire (5) extending obliquely from one side (L) to the other side (R) is disposed.
8) in the direction (S) opposite to the extending direction (W) from the other side (R) with respect to the longitudinal center axis (OO) of the injection pipe (54). The band according to claim 1, wherein the band extends obliquely toward the side (L). 3. An end (10) of the slot (10).
a) the throttle wire (58) to provide resistance when passing through the throttle wire (58);
The outer diameter (d) has a width smaller than the outer diameter (d), and an intermediate portion (10b) between the ends (10a) is wider than the ends (10a). Item 3. A jet tube fixing band according to Item 1 or 2. 4. The fastening band portion (4), the wire holding portion (6) connected to the fastening band portion (4), and the fastening band portion when viewed from the end face direction. (4) and an intermediate part (5) between the wire holding part (6), wherein the slot (10) is formed at the top of the wire holding part (6), and the intermediate part is formed. (5) is divided into left and right in the vertical direction.
4. The jet pipe fixing device according to claim 1, further comprising a retainer for retaining the intermediate portions so as not to be separated from each other. 5. band.