JPH0376925B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a floor nozzle for a vacuum cleaner used in general households.

Conventional Structure and Problems Conventionally, in this type of floor nozzle, as shown in Fig. 1, the floor nozzle main body C can be freely raised and raised to a suction joint b that is connected to the suction side of a vacuum cleaner via an extension pipe a or the like. Even if the angle of the extension pipe a with respect to the surface to be cleaned changes as shown by the dotted line, the suction part of the floor nozzle always corresponds parallel to the surface to be cleaned, thereby improving the posture of the worker. This ensures stable and efficient dust suction regardless of the situation.

However, with this configuration, when cleaning with the brush body d protruding, when the floor nozzle body c is pulled back, it is kept horizontal as shown in Fig. 2A, but on the other hand, when it is moved forward, the extension tube Due to the force applied to point a, it tilted upward as shown in point B. As a result, the floor nozzle main body (c) wobbles, making it inconvenient to use, and the moving wheels (e) may intermittently hit the surface to be cleaned, producing unpleasant noises.

OBJECTS OF THE INVENTION The present invention eliminates these conventional drawbacks and significantly improves the ease of use by making it possible to prevent the vertical movement of the floor nozzle body as required.

Structure of the Invention The floor nozzle for a vacuum cleaner of the present invention includes a suction joint having a connection portion to the vacuum cleaner side, a floor nozzle body coupled to the suction joint so as to be able to move upwardly and downwardly, and a floor nozzle from the lower surface of the floor nozzle body. The brush body that appears and this brush body above. It is equipped with a brush adjusting body that moves downward and a locking means that prevents the suction joint from being lifted up or down, and the locking means is provided with a locking part and a locked part at opposing parts of the suction joint and the brush adjusting body. The floor nozzle body is fixed to the suction joint when the brush body is protruding.

Description of examples Examples thereof will be described below with reference to the accompanying drawings.

In Figures 3 to 7, 1 is on the top. The floor nozzle body is constructed by connecting the lower nozzle members 2 and 3 via a bumper 4, and the rear central part thereof is formed into a circular shape and is pivoted to the substantially cylindrical part 6 of the suction joint 5 so as to be able to move up and down. be. Reference numeral 7 denotes moving wheels disposed near and below the pivot point of the floor nozzle body 1 relative to the suction joint 5. In addition, the lower nozzle member 3 of the floor nozzle body 1 has a suction port 8 and a dust suction section 10 consisting of a suction groove 9 that extends left and right from the suction port and is open at the outer end, and a dust suction section 10 that extends parallel to the dust suction section 10 in front and rear. A slit-like opening 11 located at is formed. A pair of brush bodies 12 and an adjustment body 13 for vertically moving the brush bodies 12 are provided within the floor nozzle body 1. The brush body 12 is a brush holder 14
The brush holder 14 has a configuration in which brushes 15 are installed in a bundle, and guide holes 16 formed at both ends of each brush holder 14
is held in a vertically movable manner by fitting into a boss 17 protruding from the upper nozzle member 2. The brush 15 opens the slit-shaped opening 11 as it moves up and down.
It protrudes and retracts from the bottom of the floor nozzle body 1 through the nozzle.

The main body 18 of the brush adjustment body 13 has a frame shape, and is held by the upper and lower nozzle members 2 and 3 so as to be slidable left and right, and cam grooves 19 are formed on the front and rear, left and right sides of the main body 18. is formed. These cam grooves 19 are set in an inclined shape so that a difference in height occurs in the horizontal direction. 20 is a shaft protruding from the left and right sides of each brush body 12 and fitted into the cam groove 19, respectively; 21 is an operator of the brush adjustment body 13, which faces outward from the window hole 22 of the upper nozzle member 2; be.

On the other hand, the suction joint 5 has a bent tubular connecting part 23 rotatably connected to the rear thereof, and a notch opening 24' is formed in a part of the peripheral wall of the substantially cylindrical part 6.

A locking recess 24 is formed on one side of the substantially cylindrical portion 6 and has an expanded tapered opening, and a locking piece 25 integrally projects from the brush adjustment body 13. , these are positioned so as to face each other. The locking piece 25 engages with the locking recess 24 only when the brush adjustment body 13 is slid to the rightmost side in FIG. 4, and apart otherwise.

26 is an extension tube detachably connected to the connecting portion 23; 27 is an elastic piece integrally formed with the brush adjustment body 13 and has a claw 28 at its tip; 29 is provided on the upper body member 2 in correspondence with the claw 28; There are multiple recesses.

In the above configuration, the protrusion of the brush 15 of the brush body 12 is adjusted depending on the condition of the surface to be cleaned. For example, if the surface to be cleaned is a carpet, it is in the retracted state, When a strong suction force is to be obtained on the cleaning surface, a medium protrusion is set, and when a weak suction force is desired to be obtained, a maximum protrusion is set. Such adjustment of the protrusion of the brush 15 is performed by sliding the brush adjusting body 13 left and right through the operator 21 and moving the brush body 12 up and down along the cam groove 19 thereof. Further, each of these positions is stably maintained by the claw 28 being elastically engaged with one of the recesses 29.

Dust from the surface to be cleaned flows into the floor nozzle main body 1 through the suction port 8 and the suction groove 9 extending left and right from this, and then flows from the suction joint 5 → the connection part 23 → the extension pipe 27, and is cleaned by electric cleaning. It is something that leads to the opportunity.

In addition, during the cleaning work, the floor nozzle body 1 can be tilted up and down with respect to the suction joint 5, so even if the angle of the extension pipe 26 changes depending on the worker's posture, the floor nozzle body 1 can be moved up and down on the surface to be cleaned. maintain a parallel state with
This allows reliable dust suction.

However, when the brush body 12 is protruded to the maximum extent, the distance between the floor nozzle body 1 and the surface to be cleaned increases, so that the floor nozzle body 1 tends to wobble in response to the back and forth movement. However, in this embodiment, when the brush adjusting body 13 is slid to the rightmost side in order to protrude the brush body 12 to the maximum extent, the locking piece 25 integrated therewith engages with the locking recess 24, and the suction joint 5 The floor nozzle body 1 is fixed against the floor nozzle body 1.

Therefore, even if the distance from the surface to be cleaned is large as shown in FIG. 8, the floor nozzle main body 1 can be operated in a stable state.

In each of the above embodiments, the locking piece was provided on the floor nozzle body side, and the locking recess was provided on the suction joint side, but there is no problem even if the installation relationship is reversed.

Effects of the Invention As explained above, the floor nozzle of the vacuum cleaner of the present invention includes a suction joint having a connection portion to the vacuum cleaner side, a floor nozzle body coupled to the suction joint in a vertically movable manner, and a floor nozzle for the vacuum cleaner. The nozzle body is equipped with a brush body that protrudes and retracts from the lower surface of the nozzle body, a brush adjustment body that moves the brush body up and down, and a locking means that prevents the suction joint from being lifted up and down. It is designed to operate when the nozzle is protruded, and during normal cleaning, the floor nozzle body is parallel to the surface to be cleaned, and good dust suction performance can be obtained even if the usage conditions such as the posture of the worker change. Further, when the suction force is weakened by protruding the brush, the floor nozzle body is fixed to the suction joint, so that the floor nozzle body does not wobble. As described above, in the present invention, the floor nozzle can be stably used depending on the cleaning condition.

[Brief explanation of drawings]

Figures 1 and 2A and B are explanatory diagrams of how to use a conventional floor nozzle, Figure 3 is an upper perspective view of the floor nozzle showing an embodiment of the present invention, and Figure 4 is a diagram showing the floor nozzle with the upper nozzle member removed. 5 is a top view, FIG. 5 is an exploded perspective view of the main part, FIG. 6 is a front sectional view, FIG. 7 is a side sectional view, and FIG. 8 is an explanation showing the state of use with the floor nozzle body fixed. It is a diagram. 1... Floor nozzle body, 5... Suction joint, 12...
...brush body, 13...brush adjustment body, 23...connection section, 24, 25...locking section, locked section.

Claims (1)

[Claims] 1. A suction joint having a connection part to the vacuum cleaner side, a floor nozzle body connected to the suction joint so as to be able to move up and down, a brush body that protrudes and retracts from the lower surface of the floor nozzle body, and a brush body that moves up and down. The brush adjusting body is provided with a slidable brush adjusting body, and a locking means for preventing an upward and downward movement of the floor nozzle body with respect to the suction joint when the brush body protrudes from the lower surface of the floor nozzle body at least to the maximum extent, and the locking means comprises: A floor nozzle for a vacuum cleaner comprising a locking part and a locked part, which are respectively provided at opposing portions of a suction joint and a brush adjustment body and are engaged when the brush adjustment body is slid in a direction in which the brush projects.