JPH041891Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a vacuum cleaner used in general households.

(Prior art) Conventionally, for example, as shown in FIG.
In the case of a vacuum cleaner that has a partition wall 22 that divides the interior into a dust collection chamber and a motor chamber, a filter for collecting fine dust is installed in line with the intake hole 23 of the fan motor, and the effectiveness of this filter is The area is regulated by the size of the intake hole 23 of the fan motor.

(Problem to be solved by the invention) However, in a fan motor whose effective area is restricted by the size of the intake hole 23 of the fan motor, the partition wall 22 and Support rubber 2 that connects the fan motor
The intake hole 23 could not be made larger beyond the inner circumferential circle 24a of No. 4, and the effective area of the filter could not be made larger.

In addition, it is possible to secure a filter area on the partition wall 22 surface other than the intake hole 23, but in this case, the filter is applied to the partition wall 22 by the suction force of the fan motor.
There was a problem in that the filter was in close contact with the filter, making it impossible to form a flow path for the air to pass through the filter.

The present invention solves these conventional problems by attaching a filter for collecting fine dust and ensuring a flow path for air to pass through the filter even in areas where the fan motor does not have an intake hole. , the effective area of the flow path of the filter for collecting fine dust is increased.

(Means for Solving the Problems) In order to achieve the above object, the present invention has a partition wall that divides the inside of the main case into a dust collection chamber and a motor chamber, and a part of the partition wall that is located near the intake hole of the fan motor. Therefore, a plurality of ribs with decreasing rib lengths are arranged in stages, and the fine dust collecting filter is brought into contact with the surface formed by the ribs.

Here, even if the fine dust collection filter tries to come into close contact with the partition wall due to the suction force of the fan motor, the above-mentioned stepwise arrangement of ribs prevents the close contact, and the ribs are shortened as they approach the intake hole. This allows the structure to ensure a flow path for suction air.

(Function) However, according to the present invention, even if the fine dust collection filter tries to come into close contact with the partition wall due to the suction force of the fan motor, the multiple ribs protruding from the surface of the partition wall on the dust collection chamber side Therefore, the filter can be prevented from coming into close contact with the partition wall.

In addition, by gradually shortening the rib length as it approaches the intake hole, all the suction air flowing between each rib flows to the intake hole, making the flow path area several times larger than the area of the intake hole. Can be secured.

Furthermore, by increasing the area of the flow path, a filter for collecting fine dust of an appropriate size can be attached, so that the area for collecting fine dust can be increased and the dust collection efficiency can be improved.

Furthermore, by increasing the filter collection area, even if a filter with large air pressure loss is installed, the pressure loss can be compensated for by expanding the area, making it possible to install a fine dust collection filter with high dust collection efficiency. Become.

(Example) Hereinafter, an example of the present invention will be described in detail based on the drawings. In the figure, reference numeral 1 denotes a main case which is provided with a dust collection chamber 3 on the front side via a partition wall 2 and a motor chamber 4 containing a fan motor 5 on the rear side.

A dust collection bag 6 for collecting dust is installed inside the dust collection chamber 3, and an air intake hole gasket 7 is installed inside the dust collection chamber 3.
It is connected to a hose (not shown) via.

Further, on the rear side of the dust collection chamber 3, a plurality of ribs 8 are provided that protrude from the partition wall 2, and a fine dust collection filter 9 is provided to collect fine dust that cannot be collected by the dust collection bag 6. It is sandwiched between the surface and the filter holder 10.

Furthermore, the fan motor 5 has a support rubber 1
1, and is installed in close contact with the partition wall 2 so that the suction force for sucking dust does not leak.

Reference numeral 12 denotes a bumper, which is installed between the main case 1, the upper body 13, and the dust cover 14.

Reference numerals 15 and 16 are front wheels and rear wheels for movement disposed at the bottom of the main case 1.

Next, the configuration of the plurality of ribs 8 provided on the partition wall 2 of the main case 1, the fine dust collection filter 9, and the filter holder 10 will be explained with reference to FIGS. 1 and 2.

The partition wall 2 is provided with an intake hole 17 for collecting dust by the fan motor 5.
The dust collection chamber 3 and the motor chamber 4 are communicated with each other.
Further, the intake hole 17 can open only inside the inner circumferential circle 11a of the support rubber 11, and is arranged so that suction is drawn only from the intake hole 17 by bringing the support rubber 11 and the partition wall 2 into close contact with each other. There is.

In addition, on the surface of the partition wall 2 on the side of the dust collection chamber 3, a plurality of ribs 8a having the same length are provided in parallel to each other in an overhanging portion of the intake hole 17.
In other parts, a plurality of ribs 8b whose rib length becomes shorter as they approach the intake hole 17 are provided in parallel to each other, and a step is provided between the upper ends of the adjacent ribs 8b. A ventilation path to the hole 17 is formed.

Furthermore, the protruding end surfaces of the ribs 8a and 8b form the same plane, and as shown in FIG. A filter 9 is fixed to the partition wall 2. This fixation is achieved by hooking a hook 18 formed on the filter holder 10 into a locking hole 19 formed in the partition wall 2 in a detachable manner.

Next, the functions of the ribs 8a, 8b and the fine dust collection filter 9 will be explained.

As shown in FIG. 3, the dust-laden air sucked by the fan motor 5 enters a dust collection bag 6, where large pieces of dust and the like are collected.
Further, the wind containing fine dust not collected by the dust collecting bag 6 passes through the fine dust collecting filter 9 and is discharged through the fan motor 5.

At this time, the fine dust collecting filter 9 is attracted to the partition wall 2 by the suction force of the fan motor 5 and tends to come into close contact with the partition wall 2, but because the rib 8 is provided on the partition wall 2, this does not come into close contact.

In addition, among the ribs 8, the wind passing between the ribs 8b provided at locations other than the intake hole 17 is configured such that the rib length becomes shorter as it approaches the intake hole 17, as shown in the figure. Since there is a step between 8b and 8b, the air flows into the intake hole 17 through a passage as shown by the arrow in FIG.

As a result, the part of the partition wall 2 other than the intake hole 17 of the fan motor 5 can be used as a flow path for the fine dust collection filter 9, the filter area can be expanded, and the efficiency of collecting fine dust can be improved. can.

In addition, even if a fine dust collection filter 9 with high pressure drop is installed to improve dust collection efficiency, the increased flow path area improves dust collection efficiency without deteriorating performance due to filter pressure loss. can be done.

(Effects of the invention) As explained above, the vacuum cleaner according to the invention has
A partition wall having an intake hole is interposed between the front dust collection chamber and the rear motor chamber, and a rib of approximately the same length is provided on the part of the partition wall on the dust collection chamber side that overlaps with the intake hole. On the other hand, in the area other than the intake hole, a plurality of ribs whose length becomes shorter as they get closer to the intake hole are provided in sequence, and a step is created between the ends of adjacent ribs. This forms a ventilation path to the intake hole, and the fine dust collection filter placed on the dust collection chamber side is brought into contact with the ribs of the partition wall.
This has the following effects.

1. Due to the suction force of the fan motor, the fine dust collection filter tries to come into close contact with the partition wall surface, but since there are multiple ribs protruding from the surface of the partition wall facing the dust collection chamber, these ribs This reliably prevents the filter from coming into close contact with the partition surface in a surface pressure state, and also creates a flow path for air according to the height of the rib between the partition surface other than the suction force and the opposing surface of the filter. can be ensured.

2 Furthermore, the length of the multiple ribs protruding from the partition wall surface other than the part where the suction hole is provided is shortened as the rib approaches the suction hole, and a step is created between the ends of adjacent ribs. Therefore, the opening of the ventilation passage between the adjacent ribs formed by this step is opened toward the intake hole, and the suction air generated in the ventilation passage between the filter and the partition wall is directed toward the intake hole. It is possible to make the flow flow smoothly, and therefore not only can the flow path area be increased, but also a forced intake force can be applied to the part of the filter that faces the partition surface other than the intake hole. It is also possible to efficiently collect fine dust.

3. Also, by expanding the flow path area, a fine dust collection filter of a suitable size can be installed, which increases the fine dust collection area and improves the dust collection efficiency. Even fine dust collection filters with high dust collection efficiency, which conventionally could not be installed due to high pressure drop, can be installed without deteriorating performance.

4. Since the flow path area can be secured without enlarging the intake hole that communicates the dust collection chamber and the motor room, there is no need to enlarge the fan motor or support rubber, making it possible to create a small and lightweight vacuum cleaner.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a partially enlarged sectional view, Fig. 2 is a partially cutaway side view, Fig. 3 is a partially cutaway plan view, and Fig. 4 is a partially cutaway side view. is a partial cross-sectional view showing a conventional example. 1... Main case, 2... Partition wall, 3... Dust collection chamber, 4... Motor room, 5... Fan motor,
8, 8a, 8b...Rib, 9...Fine dust collection filter, 17...Intake hole.

Claims (1)

[Scope of utility model registration request] The main case includes a dust collection chamber at the front and a motor chamber at the rear through a partition wall having an intake hole for the fan motor, and a dust cover and an upper body that cover the main case from above. A plurality of ribs of approximately the same length are protruded from a portion of the surface on the dust collection chamber side that overlaps with the intake hole, and a plurality of ribs whose length becomes shorter as it approaches the intake hole are provided at a portion other than the intake hole. The ribs are successively protruded to form a step between the ends of adjacent ribs, and this step forms a ventilation path to the intake hole. A vacuum cleaner characterized by being in contact with a rib.