JPH03217263A - blower pipe - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a fluid jet pipe whose outlet opening can be changed as required, and particularly to a chemical jet pipe of a powered chemical sprayer or a blower jet pipe of a blower vacuum cleaner. Concerning suitable construction.

Conventional technology Fluid jet pipes, especially the jet pipes of power-powered blower vacuum cleaners, are used when a relatively large volume of discharge jet is required, such as when moving a large amount of light debris at once, and when discharging a jet of air with a relatively large amount of air, such as when moving a large amount of light debris at once, and when discharging a jet of air with a relatively large amount of air, such as when moving a large amount of light debris at once, and when discharging a fluid jet with a relatively large amount of air, such as when moving a large amount of light debris at once, and when discharging a jet of air with a relatively large amount of air. There are times when a powerful discharge jet with a relatively high wind pressure is required, such as when blowing away objects such as the There is a need for a jet tube configured such that a jet flow is easily obtained during use. However, with conventional jet pipes, the outlet opening area cannot be changed and is constant, so by replacing the jet pipe with another one or adjusting the output of the blower, it is possible to discharge air with various air volumes and pressures. The blower is configured to generate a jet flow, and therefore, increasing the wind pressure results in a large amount of wasted air, and increasing the output of the blower also increases noise.

Problems to be Solved by the Invention Therefore, the present invention eliminates the disadvantages of the prior art as described above, and also makes it possible to easily adjust the amount or pressure of the discharge jet as necessary with a relatively simple structure. It is an object of the present invention to provide a jet pipe that achieves this and suppresses generation of high noise.

Means for Solving the Problems According to the present invention, a fluid jet pipe for discharging a fluid jet includes a variable outlet beak member disposed at an outlet end of the jet pipe, and a fluid jet pipe for discharging a fluid jet flow. It is characterized by a configuration in which the outlet opening for the jet stream is always fully open and can be narrowed down as necessary.

Accordingly, the variable outlet beak member can narrow the outlet opening from a fully open state as required, and the amount of jet flow discharged from the jet tube or the utilization of the pressure can be adjusted as required.

Example Next, the present invention will be described based on embodiments shown in the drawings.

The jet pipe 1 of the illustrated embodiment is particularly suitable for use as a jet pipe of a power blower vacuum cleaner, and is integrally molded from a suitable synthetic resin material. The jet pipe 1 has a substantially long length and a generally cylindrical cross-sectional area. Flat surface portions 3 and 4 extending in the instep direction are integrally formed. On each of the flat surface portions 3 and 4, a holding member 24 equipped with bottles 5 and 6 vertically spaced apart from each other in the vertical direction is installed from the outside through the spout pipe 1 and the town outlet beak members 7 and 8, which will be described later. The upper pair of bottles 5 support a downwardly opened semi-cylindrical spout beak member 7 on both sides thereof so as to be pivotable in the upward direction. The bottle 6 has a semi-cylindrical variable outlet beak member 8 that opens upward.
is supported on both sides thereof so as to be pivotable in the upward direction. These q outlet beak members 7 and 8 are connected to the jet pipe 1.
It is arranged so as to be in contact with the outer peripheral surface of the outlet end 2, and projects forward in the axial direction from the outlet end 2 thereof.

The lower side edges 9 of the upper variable outlet beak member 7 and the upper side edges 10 of the lower variable outlet beak member 8 are arranged facing each other, and the gap G between them is It is formed so as to extend on an obliquely inclined surface so as to gradually spread apart toward the front in the axial direction. It will be appreciated that in this way, the eye evacuation beak members 7 and 8 are formed in the same shape and are arranged opposite each other.

Further, the outer circumferential surface of the outlet end 2 of the jet pipe 1 forms a radially inwardly inclined portion 11 to facilitate pivoting of variable outlet beak members 7 and 8, which will be described later. It has become.

on the respective pins 5 and 6 of the flat surface portions 3 and 4;
Rotatably supported are gears 12 and 13, which are integrally formed in mesh with each other on the variable outlet beak members 7 and 8, respectively. Accordingly, both said gears 12 and 13 are connected to the lower variable outlet beak member 8 when the upper variable outlet beak member 7 pivots downwardly from the fully open position shown in FIG. 1 to the fully open position shown in FIG.
are simultaneously pivoted upwardly from the fully open position shown in FIG. 1 to the fully open position shown in FIG. 3, thereby acting as an interlocking device for simultaneously pivoting both variable outlet beak members 7 and 8 in opposite directions. Further, both ends 20 and 2 of the torsion spring 19 are inserted into the locking holes 22 and 23 provided in both the variable outlet beak members 7 and 8.
1 is locked so that both variable outlet beak members 7 and 8 are normally held in the fully open position shown in FIG. When both variable outlet beak members 7 and 8 are in the fully open position shown in FIG. 1, their tips 14 and 15 have a diameter D (see FIG. ) and their edges 9 and 10 when both variable outlet beak members 7 and 8 are in the fully open position shown in FIG.
are substantially in contact with each other, and their tips 14 and 15 define a minimum jet outlet opening area of a substantially elliptical shape having a length A in the vertical direction and a length 8 in the horizontal direction, as shown in FIG.

Furthermore, the tip of a cable 17 is locked to a cable locking portion 16 provided on the inner surface near the tip 15 of the lower variable outlet beak member 8, and this cable 17 is connected to the inside of the jet tube 1 rearwardly. The cable 17 extends obliquely upward, and further extends rearward outside the jet pipe 1 through a cable guide passage 18 formed in the upper portion of the jet pipe 1, and the rear end of the cable 17 is provided at a rear passage position of the jet pipe 1. and an operator actuated lever (not shown). During use, the operator rotates the operator actuated lever to pull cable 17, thereby instantaneously pivoting variable outlet beak members 7 and 8 from the fully open position of FIG. 1 to the fully open position of FIG. In addition, by returning the lever, the cable 17 can be adjusted to an intermediate position between the fully open position shown in FIG. 1 and the fully open position shown in FIG. It is possible to obtain a jet with the desired wind level and pressure by maintaining the jet flow at the desired wind level and pressure. In addition, gears 12 and 13
may be provided only on one of the flat surface portions 3 or 4, and instead of the gears 12 and 13, other mechanisms such as a cam mechanism with a similar effect may be provided.

In addition, the variable outlet beak member may be further divided and combined, and various modifications can be made, such as constructing a rubber tube-like member so that it can be narrowed.

Effects of the Invention With the configuration of the present invention described above, the present invention can easily adjust the opening and closing of the jet outlet opening area of the jet pipe, thereby producing a discharge jet of a desired amount and pressure as necessary. It is possible to provide a jet pipe which has a simple structure, is easy to handle, and can reduce noise generation to a minimum.

[Brief explanation of drawings]

Claims (1)

[Claims] (1) A fluid jet tube (1) for discharging a fluid jet, the outlet end (2) of the jet tube having a variable outlet beak member (7,
8), wherein the outlet opening for the fluid jet discharged from the jet tube is always fully open and can be narrowed down as necessary.