JPS6127568Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a vacuum cleaner that maintains the operating characteristics of a dust alarm constant regardless of the blowing capacity of an electric blower installed in the vacuum cleaner.

A dust alarm that generates a sound due to the vibration of a vibrating body is configured such that the vibrating body vibrates and generates a sound when the amount of air from an air intake hole provided in a vibrating body installation section reaches a certain value. By the way, when the model of the vacuum cleaner changes, that is, when the air blowing capacity of the electric blower installed changes, the intake characteristics of the air that hits the vibrating body change, and the timing of the sound emitted relative to the level of dust collection by the vacuum cleaner may shift. Conventionally, a dust alarm corresponding to the capacity of the electric blower had to be prepared because of the inconvenience of no sound, which was extremely wasteful. In addition, the above-mentioned inconveniences occur due to variations in the performance of the electric blower and the vibrating body, so it is necessary to strictly manage the air volume and check the performance of the vibrating body, which may cause problems in production. Ta.

The present invention solves the above-mentioned drawbacks of the conventional technology by providing a second air intake hole in addition to the air intake hole for introducing air to the vibrating body, and adjusting the amount of air flowing from the second air intake hole. Accordingly, there is provided a vacuum cleaner in which the air intake characteristics at the vibrating body installation part are kept constant. Hereinafter, embodiments will be described in detail with reference to the drawings.

FIG. 1 shows the appearance of one embodiment of the present invention, in which 1 is a vacuum cleaner body, 2 is a removable dust collection section cover, and 3 is a dust alarm section. Also,
Figure 2 shows the internal structure of the vacuum cleaner.
4 is an electric blower, 5 is a dust collection section, and a dust collection bag 6 having a filter is provided. 7 is a vibrating body provided in the dust alarm section 3.

The dust alarm section 3 is constructed as shown in FIG. That is, one room 8 is formed, and the vibrating body 7 is placed in it. This vibrating body 7
consists of two beads having approximately the same natural frequency. A first intake hole 9 is provided in the upper part of the vibrating body 7, and apart from this, a second intake hole 10 is provided.
Furthermore, an exhaust hole 11 is provided. 12 is an air protector, and normally the member 13 is connected to the spring 14.
However, when the pressure on the air protector 12 side becomes a negative pressure lower than a certain value compared to that on the room 8 side, the member 13 moves along the guide 15 and closes the exhaust hole 11. Air is allowed to flow through 11. A part of the dust collecting section cover 2 is made transparent so that the movement of the member 13 can be visually observed from the outside, so that the negative pressure state of the dust collecting section 5 can be known. In this case, member 13 serves as the guide.

In the above configuration, when dust accumulates in the dust bag 6 and the filter etc. becomes clogged, the dust collection part 5 becomes negative pressure, and the member (pointer) moves against the spring force of the spring.
13 moves, the exhaust hole 11 opens, and air flows. This air flows in from the first intake hole 9 and the second intake hole 10, and the vibrating body 7 vibrates due to the wind flowing in from the first intake hole 9, making a sound to indicate that dust has accumulated. .

Therefore, if the model of the vacuum cleaner changes and the air blowing capacity of the installed electric blower changes, the amount of air flowing will also change, and the sound will be determined by the amount of air flowing from the first intake hole 9. It is necessary to keep the air intake characteristics constant regardless of the size of the air blowing capacity, and in this embodiment, the second air intake hole 1 provided separately is
By adding or subtracting the number of 0's, the ratio of air volume flowing from both intake holes can be changed.
In this way, the air intake characteristics from the intake hole 9 can be maintained at the required characteristics even when the air blowing capacity of the electric blower changes, and there is an effect that the best vibration sound can always be displayed. .

Note that in the air protector 12, the spring pressure of the spring 14 may be adjusted as appropriate. Also,
In the embodiment, the number of intake holes 10 is changed, but the size of the intake holes may be changed. Furthermore, a filter may be provided inside the intake hole 10 or in the path of the air flowing in from the intake hole 10, and the air volume may be adjusted by changing the type or thickness of the filter.

As explained above, according to the present invention, a second air intake hole is provided outside the air intake hole for introducing the air that hits the vibrating body, and the vibrating body is installed by adjusting the amount of air from the second air intake hole. Since the air intake characteristics at each section can be maintained constant, the present invention can be sufficiently applied to various types of electric blowers with different capacities, and has the advantage of eliminating waste and improving productivity.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the appearance of one embodiment of the present invention, FIG. 2 is a sectional view showing the internal structure, and FIG. 3 is a configuration diagram of a dust alarm section. 4... Electric blower, 7... Vibrating body, 9... First
intake hole, 10... second intake hole, 12... air protector.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) Normally, a valve member is pressed against the outside air ventilation port provided separately from the dust suction port to block it, and the dust is collected when the filter is clogged with dust. an air protector configured to cause the valve member to retreat due to the negative pressure and open the outside air vent when the air vent reaches a constant negative pressure state with respect to the outside air; a first air intake hole that allows the air to pass through the outside air flow port without passing through the dust alarm portion; A second air intake hole that can be introduced into the machine and adjust the amount of air introduced, and adjust the amount of air from the second air intake hole according to the air blowing capacity of the installed electric blower, A vacuum cleaner characterized in that air intake characteristics from the first air intake hole are maintained constant. (2) The vacuum cleaner according to claim 1, wherein the amount of air introduced is adjusted by increasing or decreasing the number or changing the size of the second intake holes. (3) The vacuum cleaner according to claim 1, wherein the second intake hole has a filter, and the amount of air introduced is adjusted depending on the type or thickness of the filter.