JP3063154B2 - Dust collection amount display device for vacuum cleaner - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dust collection amount display device of a mechanical vacuum cleaner that uses a negative pressure of a dust collection chamber used in a general household.

2. Description of the Related Art A configuration of a conventional dust collection amount display device of this type will be described with reference to FIGS. 6 and 7. FIG. As shown in the figure, the dust collection amount display device 21 has a pointer 22 indicating the degree of accumulation of dust and a pointer spring 23 for urging the same in a pointer cylinder 24, a lid 26 having an opening 25 in the center, and It comprises a connecting cylinder 28 for connecting the main body dust collecting chamber 27. The dust collection amount display device 21 is attached to a dust collection lid 29 that constitutes a main body front dust collection chamber 27, and includes a storage lid 30.
The state of the dust accumulation is indicated by the position of the pointer 22 through the hole 31 provided in the hole. The operation will be described. When dust accumulates in the paper bag 32 attached to the main body dust collecting chamber 27 and the inside of the main body dust collecting chamber 27 becomes a negative pressure, the pressure inside the dust collection amount display device 21 provided on the upper part also increases. Similarly, a negative pressure occurs. While the negative pressure is small, the pointer 22 is urged by the pointer spring 23 and the sealing surface 33 is covered.
Close contact with 26 to maintain airtightness. However, when the negative pressure further increases and the negative pressure in the dust collection amount display device 1 becomes larger than the urging force of the pointer spring 23, the urging force of the pointer spring 23 loses the negative pressure, and the pointer 22 moves to the connecting cylinder 28 side. I do. At this time, the opening
From 25, air flows into the main body dust collection chamber 27. The electric blower 34 is cooled by the inflow air to prevent burnout of the electric blower.

SUMMARY OF THE INVENTION In such a conventional configuration, the dust collection amount display device 21 for determining the degree of dust accumulation in the dust collection chamber 27 is a unit configured with complicated mechanical components. In addition, the number of constituent parts is large, which not only increases the cost, but also increases the size, which occupies much space in the vacuum cleaner.

An object of the present invention is to provide a dust collecting amount display device for a vacuum cleaner having a small number of components, a simple structure, a small space, and a high dust collecting amount display accuracy. It is assumed that.

Means for Solving the Problems In order to solve this problem, the invention according to claim 1 of the present invention is arranged such that a transparent pointer cylinder communicating with a dust collection chamber in a vacuum cleaner main body is vertically arranged, A structure in which the thin film body having elasticity is hermetically attached to the inside of the pointer cylinder to partition the inside of the pointer cylinder up and down, and the thin film body moves up and down in accordance with the negative pressure of the dust collection chamber, is provided above the thin film body. Mounts a colored moving body, attaches a film body colored differently from the moving body above the thin film body and inside the pointer cylinder, and the moving body protrudes upward from the film body. A notch is provided, and a moving body that moves up and down by the thin film body protrudes and retracts from the film body through the notch.

According to the invention of claim 2 of the present invention, a transparent pointer cylinder communicating with a dust collection chamber in a vacuum cleaner main body is vertically disposed, and an elastic thin film body is hermetically attached inside the pointer cylinder. The inside of the pointer cylinder is vertically divided so that the thin film body moves up and down in response to the negative pressure of the dust collection chamber, and penetrates to the center in a mortar shape above the thin film body and inside the pointer cylinder. A colored mortar board provided with holes is provided, and a liquid of a different color from the mortar board is filled above the thin film body, and the liquid moving up and down by the thin film body is above the mortar board through the through hole. It is configured to appear and disappear.

According to the first aspect of the present invention, as the dust accumulates in the dust collecting chamber and the negative pressure is generated in the dust collecting chamber, the thin film body descends, and the moving body mounted on the thin film body also descends. Thereby,
Initially, the upper part of the moving body that has been exposed above the membrane through the cut of the membrane is hidden below the membrane. as a result,
The color of the moving body is covered with a film colored in another color, and the color seen from the outside changes. This change makes it possible to display the amount of dust in the dust collection chamber.

In the invention according to claim 2 of the present invention, the level of the colored water filled above the thin film body falls due to the lowering of the thin film body, and the colored water is filled by the through hole in the central portion of the mortar plate disposed above the thin film body. It will flow down. When this state is viewed from the outside, the color of the colored water disappears, and instead, the color of the mortar plate appears, and the color changes. The change in the amount of collected dust is displayed by such a change in color.

Embodiment An embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, a dust collecting amount display device 3 is vertically connected to a connecting cylinder 4 in a space provided in an upper storage lid 2 above a dust collecting chamber 1.
Attach to The change in the amount of collected dust is determined by the hole 6 provided in the storage lid 5.
Display through This dust collection amount display device includes a connecting cylinder 4, a pointer cylinder 7, a thin film body 8 which is vertically and airtightly held in the center of the inside of the coupling cylinder 4, and a moving body colored blue, for example. It is composed of a spherical body 9 as an example, and a thin film body 8 and a circular film body 10 formed by combining a sector shape held in parallel so that the lower half of the spherical body 9 is hidden. That is,
As shown in FIG. 3, the film body 10 has a cross-shaped cut, and the cut causes the sphere 9 to come out above the film body 10.

The operation of the dust collection amount display device 3 configured as above is described in the second.
This will be described with reference to FIG. 3 and FIG. When the vacuum cleaner is stopped and when the amount of dust in the dust collection chamber 1 is small, as shown in FIGS. 2 (a) and 3 (a), the sphere 9 is electrically cleaned through the transparent pointer cylinder 7. Visible from outside the machine. However, when dust accumulates and the inside of the dust collecting chamber 1 gradually becomes negative pressure, the second
From the state shown in FIG. 3A and FIG. 3A, the thin film 8 is pulled toward the dust collection chamber 1 and the sphere 9 descends. When the negative pressure further increases, the sphere 9 is hidden below the thin film body 10 as shown in FIGS. 2 (b) and 3 (b). If the thin film member 10 is colored red, for example, the dust collection amount display device 3 is determined by the amount of dust.
Changes from blue to red. Such a change in color makes it possible to display dust in the dust collection chamber.

A second embodiment will be described with reference to FIGS.
As shown in FIG. 4, a mortar plate 13 with a hole in the center and a mortar plate 13 is installed in parallel above the transparent pointer cylinder 11. The thin film body 12 is placed airtight below the mortar plate 13. Further, the colored water 14 is filled to such an extent that the mortar plate is hidden above the thin film body 12.

FIG. 4 shows a state where the amount of dust in the dust collection chamber is small.
In this state, only the color of the colored water is visible from above. When the amount of dust gradually increases, as shown in FIG. 5, the thin film body 12 is sucked toward the dust collection chamber and descends. Then, the water level of the coloring water also drops, and flows out below the central hole 15 of the mortar plate 13. As a result, the mortar plate 13 that has been hidden until then is exposed. Here, as an example, if the colored water 14 is blue and the mortar plate 13 is red, the color of the pointer tube changes from blue to red depending on the amount of dust collection. The amount of dust collection can be displayed by such discoloration.

In the second embodiment, the colored water is used to immerse the membrane. However, the liquid is not limited to water, but may be a liquid such as ethylene glycol or kerosene which can be colored and has a viscosity close to that of water. Anything can be used.

As is clear from the above description of the embodiments, according to the present invention, since it can be manufactured with a simpler configuration than the conventional one, the number of parts is reduced and the cost is reduced. Furthermore, compared to the conventional case, it is possible to reduce the size because no spring is used. Further, since the dust collection amount is displayed by the expansion and contraction of the thin film, the display accuracy is also improved.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of an upper part of a dust collecting chamber of a vacuum cleaner main body according to an embodiment of the present invention, FIG. 2 (a) is an enlarged longitudinal sectional view of the dust collecting amount display device, and FIG. FIG. 3 (a) is a longitudinal sectional view showing the same operating state, FIG. 3 (b) is the same transverse sectional view,
FIG. 4 is an enlarged sectional view of a dust collection amount display device of another embodiment,
FIG. 5 is a longitudinal sectional view showing the operation state, FIG. 6 is a partially cutaway sectional view of a conventional vacuum cleaner, and FIG. 7 is a longitudinal sectional view of a dust collection amount display device of the vacuum cleaner. 2 ... Upper storage lid, 3 ... Dust collection amount display device, 4 ... Connection cylinder, 5 ... Storage lid, 6 ... Window, 7, 11 ... Pointer cylinder, 8, 12 ...
... thin film, 9 ... sphere, 10 ... film, 13 ... mortar board,
14 ... Colored water.

Continuation of front page (56) References JP-A-4-102426 (JP, A) JP-A-3-268726 (JP, A) JP-A-3-165725 (JP, A) JP-A-53-79583 (JP) , A) (58) Field surveyed (Int. Cl. ⁷ , DB name) A47L 9/19

Claims (2)

(57) [Claims] 1. A transparent pointer cylinder communicating with a dust collection chamber in a vacuum cleaner main body is disposed vertically, and an elastic thin film member is hermetically attached to the inside of the pointer cylinder so that the inside of the pointer cylinder is sealed. Partitioning up and down, the thin film body moves up and down according to the negative pressure of the dust collection chamber, a colored moving body is placed above the thin film body, and above the thin film body and the pointer barrel A film body colored differently from the moving body is attached inside, and the film body is provided with a cut in which the moving body protrudes upward, and the moving body that moves up and down by the thin film body is formed through the cut. A dust collecting amount display device of a vacuum cleaner configured to protrude and retract from a film body. 2. A vertical pointer cylinder communicating with a dust collection chamber in a vacuum cleaner main body is disposed vertically, and an elastic thin film is hermetically attached to the inside of the pointer cylinder so as to seal the inside of the pointer cylinder. Partitioned up and down, the thin film body is configured to move up and down according to the negative pressure of the dust collection chamber, and a through hole is provided in the center in a mortar shape above the thin film body and inside the pointer cylinder. A configuration in which a mortar plate is installed, a liquid of a different color from the mortar plate is filled above the thin film body, and a liquid that moves up and down by the thin film body protrudes and descends above the mortar plate through the through hole. Dust collection amount display device for vacuum cleaner.