JPH0253051B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a dust indicator with an alarm for a vacuum cleaner, which notifies the amount of dust sucked by the vacuum cleaner by sound or a scale and an indicator.

[Prior art]

Conventionally, as means for notifying the user of the amount or state of dust suction in a vacuum cleaner, a visually appealing dust indicator and an audible alarm device (or notification mechanism) are publicly known and in use. and,
All of these notification methods were intended to be used independently.

[Problems with conventional technology]

Visual dust indicators have the advantage of being able to accurately determine the level of dust suction using a scale and pointer.If you are not constantly watching the pointer, you will be able to avoid clogging of the filter. It has the disadvantage of being overlooked.

Conventional visual warning devices have the advantage of being able to reliably notify the occurrence of a clogging condition by emitting an alarm sound even if no special attention is paid; Previously, there is no warning sound at all, so it is not possible to know the extent of the amount of dust being sucked in, and furthermore, it is not possible to predict when a clogging condition will occur.

[Objects of the invention and means for achieving the same] The first object of the invention is to create an alarm device using a vibrating valve, so that it is loud enough to avoid being drowned out by the vibration noise of an electric blower and causing no discomfort. Second, the alarm and dust indicator are configured to be detachable so that the vacuum cleaner can be used as a vacuum cleaner with an alarm or without an alarm. The objective is to enable dual-use usage.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings.

Reference numeral 1 denotes a vacuum cleaner body, which consists of a dust collection case 2 with a built-in filter (not shown) and a main body case 4 with a built-in electric blower 3. The dust collection case 2 and the main case 4 can be attached and detached by a latch button 5. freely combined.

4 is a dust indicator, which is attached to the vacuum cleaner body 1 above.
is stored at the top of the. A first pipe 17 is made of a transparent material and has a first opening 7 at one end and a first outside air introduction hole 9 formed by a partition wall 8 at the other end. Reference numeral 10 denotes an elbow that fits into the first opening 7 of the first pipe 17 and communicates the inside of the first pipe 17 with the intake side of the electric blower 2 in the cleaner body 1. Reference numeral 11 denotes a pointer that is displaced between this elbow and the partition wall 8 in the first pipe 17 due to the difference in internal and external air pressure, and constitutes an indicator. Reference numeral 12 denotes a spring that biases the pointer 11 toward the partition wall 8 side.

Reference numeral 18 denotes an alarm, which is detachably provided on the dust indicator 6. A second pipe 19 is detachably attached to the first pipe 17, and has a second opening 20 communicating with the outside air introduction hole 9 at one end and an auxiliary outside air introduction port 14 at the other end. . 15, 15 is a second outside air introduction hole formed in a slit shape on the peripheral wall surface of the second pipe 19;
Reference numeral 16 designates a vibrating valve that is located near the second outside air introduction holes 15, 15, and is supported at one end by the second pipe 19, and is formed in the same shape as the second outside air introduction hole 15. The second outside air introduction hole 15 and the vibration valve 1
6 can also be changed from the peripheral wall surface of the second pipe 19 to the other end.

[Function and effect of the invention]

In the above configuration, to explain its effects, as the amount of dust suction increases, the negative pressure on the intake side of the electric blower 3 increases, and therefore the inside of the first pipe 17 communicating with the intake side of the electric blower 3 increases. The pointer 11 is pulled toward the elbow 10 against the biasing force of the spring 12. At this time, if a scale is provided on the peripheral wall surface of the pipe 17, the degree of the amount of dust suction can be visually checked.

In addition, the vibration valve 16 provided integrally with the second pipe 19 gradually increases the magnitude of the vibration sound as the amount of dust suction increases, so that the user can hear it not only visually but also by hearing. This is to notify the extent of the amount of dust absorbed.

In addition, if outside air is not sucked into the electric blower 3, such as when a filter (not shown) is clogged,
The intake side of the electric blower 3 becomes a large negative pressure, and the pointer 11 is moved far away by the partition wall 8. As a result, outside air is more vigorously supplied to the second outside air introduction holes 15, 15 and the auxiliary outside air introduction port 14, and the vibration valves 16, 16 provided near the second outside air introduction holes 15, 15 The vibration of the electric blower generates a loud and clear warning sound, which quickly alerts you to the danger of burnout due to overheating of the electric blower.

Therefore, according to this invention, the following becomes possible.

The fact that the filter is in a clogged state or its precursor state must be reliably communicated visually to the user, especially to those who have forgotten to visually monitor it. Amount (captured dust amount)
To enable each user to reliably and accurately predict when filter clogging will occur; To enable each user to freely decide when to clean the filter and to carry it out reliably. thing.

Moreover, the vacuum cleaner according to the present invention is configured such that the alarm 18 is detachably connected to the dust indicator 6, and can be removed as needed. It is also possible to use it as a vacuum cleaner without it, making it extremely convenient.

[Brief explanation of the drawing]

FIG. 1 is a side view of a vacuum cleaner using an embodiment of the present invention, FIG. 2 is a side sectional view showing an embodiment of the invention, and FIG. 3 is a side sectional view of the alarm. In the figure, 3 is an electric blower, 6 is a dust indicator, 7 is a first opening, 8 is a partition wall, and 9 is a first
outside air introduction hole, 11 is a pointer, 12 is a spring,
15 is a second outside air introduction hole, 16 is a vibration valve, 17 is a first pipe, 18 is an alarm, 19 is a second pipe, and 20 is a second opening. In each figure, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Claims] 1. A first opening 7 communicating with the intake side of the electric blower 3 is provided at one end, and a first outside air introduction hole 9 is provided at the other end.
A dust indicator 6 is provided in a first pipe 17 provided with an indicator 11 disposed in accordance with the pressure difference between the first opening 7 and the first outside air introduction hole 9; A second opening 20 communicating with the first outside air introduction hole 9 is provided, and a second opening 20 is provided on the peripheral wall surface or the other end.
A second pipe 19 provided with an outside air introduction hole 15,
A vibration valve 16 is provided, one end of which is supported by a second pipe wall near the second outside air introduction hole 15, and which vibrates and generates an alarm sound by the outside air introduced into the second outside air introduction hole 15. A dust indicator with an alarm for a vacuum cleaner, characterized in that the alarm 18 is detachably attached to the dust indicator 6.