JPS6342924Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Technical Field of the Invention) The present invention relates to a suction port body of a vacuum cleaner, and particularly relates to vertical movement of a brush body.

(Technical background of the invention) As shown in FIG. 1, the suction port of a vacuum cleaner is usually located on the lower surface of the holder main body 1 and behind the air passage 3 communicating with the air introduction hole 2. A brush body 4 is provided which can freely slide vertically with a stroke, and brush bristles 5 planted on the lower surface of the brush body 4 are configured to scrape out dust from recesses such as the floor surface.

Conventionally, as shown in FIG. 2, the brush body 4 fitted into the brush attachment hole 6 of the holder main body 1 is urged downward using a spring 7, so that the brush bristles 5 are adjusted according to the depth of the recess. It had a structure that moved forward and backward. Note that 8 is a rotating tube that connects the suction port body and the extension tube 9.

(Problems in the background art) However, in such a structure, the brush body 4
The spring 7 must be attached separately, which increases the number of parts and increases the number of assembly steps. Furthermore, if the spring 7 is misaligned, the brush body 4 may become inclined in the brush mounting hole 6, causing the problem that the brush body 4 cannot move up and down smoothly. 7 has a drawback in that dust adheres to it, and the dust impedes its elasticity, resulting in a drawback that operation reliability cannot be obtained during long-term use.

(Purpose of the invention) The present invention was devised in view of the above-mentioned drawbacks, and is intended to provide a suction port body for a vacuum cleaner that reduces the number of parts, improves ease of assembly, and provides reliable operation. be.

(Summary of the invention) The suction port body of the vacuum cleaner of the present invention includes a holder main body having a brush mounting hole opened on the lower surface and a sliding guide frame formed protruding inward around the brush mounting hole; a brush body that is fitted into the sliding guide frame so as to be vertically slidable and has brush bristles on the lower surface that protrude from the mounting hole; and a plate that is integrally formed on the brush body and that locks its tip to the holder body. The brush body is characterized in that the brush body is provided with a shaped elastic piece, and the brush body is biased by the elastic force of the elastic piece.

(Embodiment of the invention) Next, an embodiment of the invention will be described based on FIGS. 3 and 4.

The holder main body 11 has a lower holder 12 and an upper holder 13 fixed with screws (not shown).
and a bumper (not shown) that is held between the holders 12 and 13 and protrudes around the holders 12 and 13.

The lower holder 12 forming the lower surface of the holder main body 11 has an air passage section 16 that is shielded from the atmosphere to some extent by sled sections 14 and 15 provided at the front and rear. A wind introduction hole 17 is opened in the center of this air passage section 16, and the wind introduced from this air introduction hole 17 is rotatably fitted into a rotary tube attachment section 18 provided at the rear of the holder main body 11. is guided to a rotating tube (not shown).

On both sides of the front sled section 14, rollers 19 are provided that project slightly downward from the sled section 14 in order to reduce friction with the floor.

Further, a brush attachment hole 20 that is long in the left-right direction is opened in the rear sled portion 15, and a sliding guide frame 21 is provided around this attachment hole 20 so as to protrude inward. The guide frame 21 is provided with a pair of claws 22 on each side of the guide frame 21, the upper ends of which protrude inward from the mounting hole 20.

Ribs 23 are provided on both sides of the upper holder 13 that constitutes the upper surface of the holder body 11, facing the mounting holes 20.
is formed protrudingly. In addition, the upper holder 13
The lower holder 12 is provided with a corresponding threaded engagement portion 24 into which a fixing screw is threaded.

The brush body 25 is made of polypropylene or the like and is formed into a rectangular shape narrower than the mounting hole 20, has brush bristles 26 planted on the lower surface, and has elastic pieces 27 in a substantially inverted L-shape that protrude upward at both end edges. It is formed in one piece. This brush body 25 is inserted into the mounting hole 20, and its lower surface is locked by the upper edge of the claw portion 22 to prevent it from falling. Further, the tip of the elastic piece 27 of this brush body 25 is brought into contact with the rib 23,
The brush body 25 is always urged downward.

Next, the operation of this embodiment will be explained.

When assembling this suction port body, first, the upper holder 13 and the lower holder 12 are fixed with screws, and then the brush body 25 is pressed and inserted from the lower part of the mounting hole 20 past the claw part 22. Then, the lower surface of the brush body 25 expands again and is locked by the upper edge of the claw portion 22, thereby preventing it from falling.

Therefore, when the holder body 11 is separated from the floor, the brush body 25 is removed as shown in FIG.
has descended to a position where the lowest end of the stroke, that is, the lower surface, which can slide due to its own weight, is locked by the upper edge of the claw portion 22. In addition, if the holder body 11 is placed on the floor without applying force from above, the holder body 11
The brush body 25 is inserted to a position where the weight of the brush body 1 and the elastic force of the elastic piece 27 are balanced. Also, if force is applied from above to this suction port body during use,
The entire elastic piece 17 is pressed by the ribs 23 to a substantially horizontal position, that is, the brush body 25 is located at the uppermost end of its sliding stroke, and the bristles 26 are retracted the most.

Next, another embodiment will be described based on FIGS. 5 to 7. Note that the same parts as in FIG. 3 are designated by the same reference numerals, and the description thereof will be omitted.

An operation window 31 is opened on one side of the upper surface of the holder body 11, and a guide piece 32 is formed protruding from the inner side edge of the operation window 31. Further, a guide plate 34 having a recess 33 is formed to protrude inside the other side of the upper surface.

Further, on both sides of the upper surface of the brush body 25, the upper surface is a horizontal engagement surface 35, and both sides are inclined sliding surfaces 36.
An engaging protrusion 37 is provided.

Reference numeral 38 denotes a lever, which is formed of a substantially flat U-shaped frame body having operating portions 39 extending in both directions at both ends. The lower surfaces of both actuating parts 39 include an inclined sliding surface 40 and a horizontal engaging surface 41 continuous thereto.
An engaging portion 42 is formed, and a knob 43 is formed protruding from the upper surface of one of the actuating portions 39. This lever 38 is disposed inside the holder body 11 in a manner that bypasses the air introduction hole 17, and has one end engaged with the recess 33 and a knob 43 that protrudes upward from the operation window 31 of the holder body 11. 43, the guide piece 32 and the guide plate 34
The lever 38 slides in the left-right direction in FIG. 5 while being guided by the recess 33.

Next, the operation of this embodiment will be explained.

When the knob 43 is located at the right end of the operation window 31, the engaging portion 42 of the lever 38 is not in contact with the engaging protrusion 37 of the brush body 25, as shown in FIG. The vertical sliding of 25 differs depending on the situation, as in the case of the previous embodiment.

Next, when the knob 43 is slid toward the left end of the operation window 31, the entire lever 38 is moved toward the guide piece 3.
2 and the recess 33 to slide to the left. Then, the sliding surface 70 of the engaging portion 42 of this lever 38 comes into contact with the sliding surface of the engaging protrusion 37 of the brush body 25, and when the knob 43 is further slid, both sliding surfaces 36, 40 come into contact with each other. As shown in FIG. 7, the engagement surface 41 of the lever 38 comes into contact with the engagement surface 35 of the brush body 25.

Therefore, the brush body 25 is pressed and fixed downward by the engagement surface 41 of the lever 38, and even when force is applied from above the holder body 11, the brush bristles 26 remain in the most protruding state. , Suitable for cleaning uneven floors or gaps between boards.

Next, still another embodiment will be described based on FIGS. 8 and 9. Note that the upper holder 13 and lever 38 are the same in structure as shown in FIG. 5, and are therefore omitted.

Ribs 45 are provided on the outside of both ends of the mounting hole 20 of the lower holder 12. In addition, the brush body 25
The elastic pieces 27a are formed to protrude diagonally downward from both edges of the upper surface in a substantially L-shape.

Next, the operation of this embodiment will be explained.

The brush body 25 inserted into the attachment hole 20 is pressed upward by the action of the elastic piece 27a whose tip abuts against the rib 45. That is, normally the brush bristles 26 are in the most retracted state. Also, the fifth
As shown in the figure, by sliding a lever (not shown) by operating a knob, the brush bristles 26 are fixed in the most protruding state as in the embodiment shown in FIG.

Therefore, if the brush bristles 26 are kept in the most retracted state, it is particularly suitable for cleaning the carpet. This is due to the following reasons. When running on a carpet, if the brush bristles 26 are long, all of the brush bristles 26 will fall down, and the effect of catching the carpet's bristles will be lost. The dust suction effect deteriorates. Further, if the brush bristles 26 are able to slide from a relatively short state in a further short direction, the bristles 26 of the carpet will be pinched by the pressure, resulting in poor running performance. However, the brush bristles 2 are fixed in a short position.
6. Because no pressure is applied to the hair of the dog, the running ability is greatly improved.

(Effects of the invention) According to the present invention, since the brush body is slidably pressed upward or downward by the plate-shaped elastic piece provided integrally with the brush body, it is not necessary to separate the brush body from the conventional brush body. Molded springs are not required, the number of parts can be reduced, assembly workability can be improved, the product can be obtained at low cost, and since the brush body is made of a plate-shaped elastic piece, it will not slide due to misalignment of the biasing force. There is no slope within the moving guide frame, it slides up and down smoothly, and there is no dirt attached like with a separate spring, ensuring reliable operation even during long-term use, improving reliability. It is possible.

[Brief description of the drawings]

Figure 1 is a perspective view of the suction port of the vacuum cleaner;
The figure is a sectional view showing the conventional structure, Figure 3 is an exploded perspective view showing one embodiment of the suction port body of the vacuum cleaner of the present invention, Figure 4 is an explanatory view of the same operation, and Figure 5 is the figure 5 of the present invention. Exploded perspective views showing other embodiments, FIGS. 6 and 7
The figure is an explanatory view of the operation of FIG. 5, and FIG. 8 is an exploded perspective view with some parts omitted showing still another embodiment of the present invention.
FIG. 9 is an explanatory diagram of the operation of FIG. 8. 11...Holder body, 20...Brush mounting hole, 25...Brush body, 26...Brush hair, 2
7, 27a...Elastic piece.

Claims (1)

[Scope of Claim for Utility Model Registration] A holder body having a brush mounting hole opened on the lower surface and a sliding guide frame formed protruding inward around the brush mounting hole, and capable of vertically sliding on the sliding guide frame. a brush body having brush bristles on its lower surface that are fitted into the brush body and protrude from the mounting hole; and a plate-shaped elastic piece that is integrally formed on the brush body and whose tip is locked to the holder body, A suction port body for a vacuum cleaner, characterized in that the brush body is biased by the elastic force of the piece.