JPH0527137Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a suction tool for a vacuum cleaner, particularly to improving the cleaning performance of corners of a room.

[Conventional technology]

FIG. 12 is a perspective view showing a conventional vacuum cleaner suction tool disclosed in, for example, Japanese Utility Model Publication No. 61-4262. A rotary tube insertion port 3 communicating with the suction port 2 is provided at the rear. 4 is a dogleg-shaped rotating tube inserted into the rotating tube insertion port 3 so that its tip reaches the center of the suction tool body 1;
A fully open part 5 cut out in a semi-cylindrical shape along the axial direction from the opening at the tip and a semi-cylindrical wall 6 located on the back surface thereof are formed. In the above configuration, cleaning is performed by changing the opening area by rotating the dogleg-shaped rotary tube 4 upward or downward so that either the fully open portion 5 or the semi-cylindrical wall 6 faces the suction port 2. was.

[The problem that the idea attempts to solve]

The vacuum cleaner suction tool described above has a structure in which the opening area of the suction port 2 is changed by rotating the dogleg-shaped rotary tube 4 by 180 degrees to change the bending state. Therefore, in the same bent state, the suction port 2
For example, in order to collect dust from the floor, the dogleg-shaped rotary tube 4 is rotated upward to widen the opening area to collect dust. In an attempt to collect dust accumulated in the corners by narrowing the opening area, it was not possible to rotate the dogleg-shaped rotary tube 4 downward to clean it, which caused a problem in that there were major restrictions on use. .

This invention was made to solve this problem, and the purpose is to quickly change the opening area of the suction port with a simple operation when cleaning corners of a room where strong suction power is required.

[Means to solve the problem]

The suction tool for a vacuum cleaner according to this invention includes a suction tool body having a front suction port and a rear suction port on the lower surface, and a suction pipe insertion port communicating with both of the suction ports;
The suction device is provided on the lower surface of the suction device main body so as to be movable in the front-rear direction, and opens both of the suction ports when moving forward, and opens the front suction port and opens the rear suction port when moving backward. a movable member that closes, a biasing member that is provided at the rear of the suction unit main body and biases the movable member in the forward direction, and a biasing member that fits and penetrates the rear side wall of the suction tool main body so as to be freely rotatable from the outside; a switching knob that can be connected to the movable member in either a locked state or an unlocked state; an opening that is provided on the front wall of the suction device main body and allows the front end of the movable member to protrude through; When the member and the knob are in an unlocked state, when the front end of the movable member is pressed, the movable member retreats against the biasing force of the biasing member, and the suction area of the rear suction port decreases. death,
When the movable member and the switching knob are in a locked state, the switching knob restricts the movement of the movable member in the front-rear direction, and the rear suction port is held in an open state or a closed state.

[Effect]

In this invention, the front end of the movable member protruding from the opening provided in the front wall of the suction tool body presses against the wall, causing the movable member to retreat and close the rear suction port.

〔Example〕

An embodiment of this invention will be described below with reference to the drawings. In Figs. 1 to 9, 7 is the suction tool main body;
Reference numeral 8 denotes a plurality of suction ports formed vertically on the lower surface of the suction device body 7, including a front suction port 8a consisting of a large opening provided at the front and a rear suction port consisting of a plurality of openings provided at the rear. It consists of 8b. 9 is a brush provided on the lower surface of the suction device main body 7 and surrounds the outer periphery of the suction port 8a and the rear suction port 8b; 10 is a suction pipe connected to the suction port 8 and provided on the rear side wall of the suction device main body 7. The insertion port 11 is a dogleg-shaped suction pipe that is inserted and connected to the suction pipe insertion port, and the other end is connected to a pipe 12 that communicates with a vacuum cleaner main body (not shown). 13 is an opening provided in the front side wall of the suction device main body 7; 14 is a movable member provided in surface contact with the upper side of the suction port 8 on the lower surface of the suction device main body 7; It stands out. This movable member 14 has a front opening 15 having the same shape as the front suction port 8a and a rear opening 16 having the same shape as the rear suction port 8b. 17 is a bumper made of an elastic material fixed to the front end of the movable member 14;
8 is a recess provided in an elliptical shape at the rear end of the movable member 14; 19 is a switching knob that fits and penetrates the rear side wall of the suction device main body 7 facing the recess 18 and is freely rotatable from the outside; 20 has one end connected to the movable member 14
A spring, which is a biasing member, is inserted and loosely inserted into the recess 18 of the switch knob 19 and whose other end is provided in the suction device main body 7, and is press-fitted and supported by a convex portion 22 formed at the center of the bottom of the bottomed cylindrical portion 21 of the switching knob 19. The movable member 14 is always urged forward. Ribs 23 are provided on the opposing outer surfaces of the front end of the bottomed cylindrical portion 21, and as shown in FIG. 20
prevents dust from entering. This state is called fully open lock. As shown in FIGS. 6 and 7, 24 is a rib receiving portion formed in such a size that the rib 23 fits into the short diameter side of the opposing ellipses at the bottom of the recess 22. This is called lock time. As shown in FIG. 8, the long diameter of the elliptical recess 18 is longer than the diameter between the ribs 23, so that the ribs 23 and the recess 18 do not come into contact with each other. This state is called unlocking. 25 is an internal buffer fixed to the upper front end of the movable member 14 so as to be in pressure contact with the inside of the front side wall of the suction tool main body 7 in the state shown in FIG. 4, and 26 is an opening in the state shown in FIG. 1
A movable convex portion is provided at the lower part of the front end of the movable member 14 so as to close the lower part of the movable member 14; Shafts 29 formed inside the left and right side walls are movable brushes that have bearings on both ends that fit into the shaft 28 and brush bristles 30 planted below, and a spring receiving groove 31 is formed at the rear of the upper end. has been done. Reference numeral 32 denotes a spring supporting convex portion formed protrudingly on the upper front end of the suction port 8 facing the spring receiving groove 31; 33 supports the spring receiving groove 31 of the movable brush 29 at one end, and supports the spring supporting groove of the suction port 8 at the other end; 34 is a protruding wall that projects inward from the lower end of the opening 13 and supports the movable brush 29 and guides the movable protrusion 26; 35 is a wall; The floor surface 37 is a corner of the floor surface. In addition,
Arrows indicate air flow.

In the vacuum cleaner suction tool constructed as described above, first, the switching knob 19 is placed in the unlocked position. (Fig. 8) When collecting dust from the floor surface 36, as shown in Fig. 1, both the front suction port 8a and the rear suction port 8b are open, so dust can be collected over a wide area. is possible. Next, when collecting dust from the floor corner 37, the bumper 17 at the front end of the movable member 14 is brought into contact with the wall 35 and pressed further, so that the movable member 14 springs as shown in FIG. It is pushed toward the rear inside the suction tool main body 7 against the urging force of 20. As a result, the positions of the front opening 15 and the rear opening 16 of the movable member 14 are moved, and the rear suction port 8b is closed, allowing concentrated dust collection only from the front suction port 8a. After that, by pulling the suction tool main body 7 away from the wall 35,
The spring 20 pushes the movable member 14 back forward again, and the internal buffer 25 finally comes into contact with the front side wall of the suction device main body 7, and the movable member 14 stops.
Both the front suction port 8a and the rear suction port 8b return to the open state, and wide-area dust collection becomes possible immediately.

Further, as shown in FIG. 3, when the bumper 17 comes into contact with the wall 35, the movable convex portion 26 is pushed into the main body and pushes the upper end of the movable brush 29, so that the brush bristles 30 are moved to the floor with the shaft 27 as a fulcrum. It rotates to the surface corner 37 and captures dust. Further, the fine dust that flies up at this time passes through the lower part of the opening 13 opened by the movement of the movable convex portion 26, passes through the small hole 27, and is collected, so that there is no scattering of fine dust. Then, as shown in FIG. 4, when the suction device main body 7 is separated from the wall 35, the brush bristles 30 are rotated toward the inside of the main body by the biasing force of the springs 33, and the captured dust is swept up and swept up by the front suction port 8a. The dust is collected through the

As shown in FIGS. 5 to 8, by turning the switching knob 19 halfway and intervening the rib 23 in the movement range of the movable member 14, the movable member 14 is rendered immobile, allowing wide-area dust collection and concentrated dust collection. It is also possible to operate selectively manually. In addition, when the bumper 17 comes into contact with the wall 35, the spring 20 absorbs the impact, so there is almost no impact on the suction tool main body 7, which prevents damage to the suction tool main body 7, and also reduces the impact on the wrist. The burden will be significantly reduced.

Furthermore, as shown in FIGS. 10 and 11, the suction tool main body 7 is provided with a chemical 38 such as acaricide,
Apply drug 3 only to corners where ticks, bacteria, etc. are concentrated.
8 may be dropped to improve the cleaning performance of the corner 37.

In the above embodiment, the spring 20 is used as the biasing member.
was used, but the present invention is not limited to this, and other elastic members may be used.

In addition, in the above embodiment, the dimensions of the front suction port 8a and the front opening 15, and the dimensions of the rear suction port 8b and the rear opening 1 are
Although the dimensions and shapes of the movable members 6 and 6 are the same, for example, the movable member 1
The hole on the fourth side may be provided diagonally to improve the air flow, but the shape of the hole in the movable member 14 and the shape of the suction port 8 are not limited to this.

Furthermore, a plurality of movable members 14 may be provided to increase the degree of change in the opening.

Further, in the above embodiment, the movable brush 29 is connected to the suction port 8.
Although the cleaning device is provided at one location on the front end of the device, a plurality of devices may be provided for more effective cleaning.

Note that a switching operation such as increasing the rotational speed of the motor may be linked when the movable brush is pushed from the front to the rear.

[Effect of idea]

As explained above, this device has a strong structure because the front end of the movable member that protrudes from the opening provided in the front wall of the suction device body presses against the wall, causing the movable member to retreat and close the rear suction port. It is possible to quickly and efficiently clean corners that require suction power, which is an effect of extremely high practical value.

In addition, when the movable member is fixed to the rear using the switching knob, only the front suction port opens.
The wind speed at the front suction port increases, allowing you to concentrate and efficiently clean specific cleaning surfaces such as walls.

[Brief explanation of drawings]

1 to 9 show an embodiment of the vacuum cleaner suction tool of this invention, FIG. 1 is a sectional view when cleaning the floor surface, FIG. 2 is a sectional view when cleaning the corner of the floor surface, Figure 3 is a detailed sectional view of the movable brush when it comes into contact with the corner of the floor surface;
The figure is a detailed cross-sectional view of the movable brush when it is removed from the corner of the floor surface.
Figure 5 is a detailed cross-sectional view of the switching knob when the lock is fully open, Figure 6 is a detailed cross-sectional view of the switch knob when the lock is half-open, Figure 7 is a cross-sectional view of Figure 6, and Figure 8 is when the lock is released. 9 is a bottom view, FIG. 10 is a sectional view corresponding to FIG. 7 during floor cleaning, and FIG. 10 is a sectional view corresponding to FIG.
FIG. 1 is a cross-sectional view when cleaning a corner of a floor surface, and FIG. 12 is a perspective view of a suction tool of a conventional vacuum cleaner. In the figure, 7 is the main body of the suction device, 8a is the front suction port, 8b is the rear suction port, 9 is the brush, 10 is the suction pipe insertion port, 11 is the suction pipe, 13 is the opening, 14 is the movable member, and 20 is the It is a biasing member. Note that the same reference numerals in each figure indicate the same or corresponding parts.

Claims (1)

[Scope of Claim for Utility Model Registration] A suction tool body having a front suction port and a rear suction port on the lower surface, and a suction pipe insertion port that communicates with both of the suction ports; a movable member that is movably provided to open both of the suction ports when moving forward, and opens the front suction port and closes the rear suction port when moving backward; the suction main body; a biasing member that is provided at the rear of the suction tool body and biases the movable member forward; a biasing member that fits and penetrates the rear side wall of the suction device body so as to be freely rotatable from the outside; a switching knob that can be coupled in either state, the switching knob being provided on the front wall of the suction tool main body and having an opening that allows the front end of the movable member to penetrate and protrude, the switching knob being able to be coupled in any state in which the movable member and the knob are in an unlocked state; When the front end of the movable member is pressed, the movable member retreats against the biasing force of the biasing member, the suction area of the rear suction port decreases, and the movable member and the switching knob 2. A suction tool for a vacuum cleaner, wherein when the movable member is in a locked state, movement of the movable member in the front and back direction is restricted by the switching knob to hold the rear suction port in an open state or a closed state.