JPS6138518Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a suction port body for a vacuum cleaner.

Conventionally, the suction port bodies 5 of the suction port bodies connected to the dust collection section 2 of the vacuum cleaner 1 via a flexible hose or extension pipe 4 are stacked on top of each other, as shown in FIGS. 1 and 2. A lower body 6 and an upper body 7 which form a brush storage chamber 11a and a fan storage chamber 14a are provided, and a bumper 8 is held between the lower body 6 and the upper body 7 and is connected to the extension pipe 4. The rotary tube 9 is rotatably held and fixed with screws. Also, during assembly,
A rotating brush 11 facing a suction opening 10 formed at the front of the lower surface of the lower body 6, a partition plate 13 in which a nozzle 12 for narrowing the air from the suction opening 10 is formed, and a belt (not shown) connecting the rotating brush 11 It houses an air turbine 14 that is driven through the air turbine. Then, dust is sucked in from the suction opening 10 toward the dust collecting section 2, but the suction airflow is narrowed by the nozzle 12, and the air turbine 14 and the rotating brush 11 are rotated, and the rotating brush 11 removes the dust attached to the carpet etc. It is released from the floor surface to enhance dust absorption.

However, inside the bumper 8, the suction port body 5
Since it protrudes inward, it causes an increase in noise due to the generation of turbulent flow, and the suction airflow blows against the protrusion 15, causing fine dust to stick thereto. Furthermore, since it is necessary to avoid interference between the rotating brush 11 and the protrusion 15, the mounting dimension A from the tip of the bumper 8 becomes large. On the other hand, the gap 16 between the suction opening 10 and the rotating brush 11 must be neither too large nor too small, and needs to have a certain dimension. Therefore, as the dimension A increases, the dimension a from the tip of the bumper 8 to the front edge of the suction opening 11 also increases. Therefore, when cleaning near a wall, it becomes difficult to suck in the dust near the wall.

Also, JP-A-50-61063, Utility Model Application No. 51-
As seen in Publication No. 133151 and Japanese Utility Model Application Publication No. 139673/1983, there are some devices in which a mounting protrusion is provided for attaching the bumper to the outer peripheral surface of the suction port body, and the bumper is attached to this attachment protrusion. Although the bumper does not protrude inside the type, the bumper protrudes forward by the amount of the mounting protrusion, so the dimension a mentioned above also increases by the amount of the protrusion of the mounting protrusion, making it difficult to suck in dust from the wall. It is something. Furthermore, as seen in Japanese Utility Model Application Publication No. 51-39348, there are some vacuum cleaners in which the bumper is installed by fitting it into a groove provided on the outer periphery of the vacuum cleaner body, but if this structure is adopted for the bumper mounting structure of the floor brush, The floor brush frequently collides with walls and furniture during cleaning, and there is a problem in that the bumper easily comes off.

This idea was made to solve the problems mentioned above, and it shortens the distance near the wall where dust cannot be sucked in. It also improves the stability of bumper installation, reduces suction noise, and improves the internal space. The object of the present invention is to provide a suction port body for a vacuum cleaner that can prevent fine dust from sticking to the body.

This idea involves forming a rib by cutting out a portion of the opposing surfaces of the upper and lower bodies that constitute the suction port body, and attaching a bumper with a recess that engages with the rib to the upper and lower bodies. By forming a smooth surface on the inside of this bumper that matches the inner surface of the suction port body, it prevents fine dust from sticking and also prevents the generation of noise caused by turbulence. Since there is no need for a bumper mounting protrusion on the outside of the main body, only the bumper protrudes to the outside, and the rotating brush and suction opening must be moved to the front of the suction port body to the extent that the bumper does not protrude from the inner surface of the suction port main body. By being able to
This structure is designed to shorten the area where dust cannot be sucked in from the wall.

An embodiment of this invention will be explained based on FIGS. 3 and 4. Components that are the same as those described in FIGS. 1 and 2 are designated by the same reference numerals, and description thereof will be omitted. A bumper 20, which also serves as packing, is sandwiched between the lower body 6 and the upper body 7 over the entire periphery except for the part where the rotary tube 9 is held. This bumper 20 has grooves 2 into which ribs to be described later are fitted.
3, and a holding portion 24 having a smooth surface 19 that is embedded in a step portion to be described later and coincides with the inner surface of the suction port body 5 is formed inside the grooved line 23. Moreover, on the outside of the grooved line 23 of the bumper 20,
A buffer portion 21 that projects outward from the suction port main body 5
is formed.

A part of the inner side of the surface of the lower body 6 facing the upper body 7 is cut out to form a stepped portion 25 on the inside, and a rib 22 is formed on the outside.

In such a configuration, the front inner surface of the suction port body 5 is smooth with the smooth surface 19 coinciding with the inner surface of the suction port body 5 without the bumper 20 protruding. When the air is sucked upward toward the nozzle 12, there are no obstructions that attract dust, the airflow is smooth, and the suction noise is small. Another part of the suction airflow goes directly from the suction opening 10 to the nozzle 12 . and,
Since the bumper 20 does not protrude from the inner surface of the suction port body 5, the rotating brush 11 can be positioned closer to the front. Accordingly, the suction opening 10 is also formed closer to the front in order to match the corresponding positions of the rotating brush 11 and the suction opening 10 and keep the gap 16 constant. That is, the distance B from the front end of the bumper 20 to the center of the rotating brush 11 is smaller than the dimension A shown in FIG. 2, and the distance b from the front end of the bumper 20 to the front edge of the suction opening 10 is also shown in FIG. Smaller than dimension a. Therefore, the distance over which dust cannot be sucked in near the wall can be shortened, and the suction of dust near the wall can be improved.

Since this device is configured as described above, it is possible to improve the suction of dust near the wall by shortening the part near the wall where the dust cannot be sucked, and the bumper has a groove that engages with the rib. Since the bumper is held between the lower and upper bodies, the installation is highly stable, and the bumper will not fall off even if the buffer part protruding forward of the suction port frequently hits walls, furniture, etc. during cleaning. Since the inner surface of the suction port body and the inner surface of at least the front part of the bumper are made into a smooth surface that matches the inner surface of at least the front part of the bumper, the suction airflow can be sucked in smoothly, thereby preventing dust from reaching that surface. This has effects such as being able to prevent sticking and generation of suction noise.

[Brief explanation of drawings]

Fig. 1 is a reduced side view showing how the suction port body is used, Fig. 2 is a longitudinal sectional side view showing a conventional example, Fig. 3 is a longitudinal sectional side view showing an embodiment of this invention, and Fig. 4 is its side view. FIG. 3 is a partially enlarged sectional view. 2... Dust collection part, 5... Suction port body, 6... Lower body, 7... Upper body, 10... Suction opening, 11
... Rotating brush, 19 ... Smooth surface, 20 ... Bumper, 21 ... Buffer section, 22 ... Rib, 23 ... Concave line, 24 ... Holding section, 25 ... Step section.

Claims (1)

[Scope of utility model registration request] A lower main body is provided in front of the lower surface in which a suction opening is formed to allow the rotating brush to face the floor surface, and by overlapping the upper main body with the lower main body, a suction port main body having a brush storage chamber and a fan storage chamber is formed. , a part of the inner side of the opposing surface of at least one of the lower body and the upper body on at least the front side of the suction port body is cut out to form a stepped portion on the inside and a rib on the outside, and the rib is fitted. A bumper is provided, in which a groove is formed and the bumper is sandwiched between the lower body and the upper body, and a smooth surface is fitted into the stepped part on the inside of the concave shape of the bumper and matches the inner surface of the suction port body. A suction port body for a vacuum cleaner, characterized in that a holding portion having the above-mentioned grooves of the bumper is formed, and a buffer portion protruding outward from the suction port body is formed on the outside of the grooved line of the bumper.