JP2932640B2 - 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 for a vacuum cleaner.

2. Description of the Related Art A conventional configuration will be described with reference to FIGS. 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, and is opened at the center.
It comprises a connecting cylinder 28 for connecting a lid 26 having a 25 and a main body dust collecting chamber 27. The dust collection amount display device 21 is attached to a dust collection cover 29 that forms a front dust collection chamber 27 of the main body, and includes a storage cover.
The state of dust accumulation is notified at the position of the pointer 22 through the hole 31 provided in 30. The operation will be described. Dust accumulates in a paper bag 32 attached to the main body dust collecting chamber 27 and the main body dust collecting chamber.
When the pressure inside the vacuum chamber 27 becomes negative, the vacuum inside the dust collection amount display device 21 provided thereabove similarly increases. While the negative pressure is low, the pointer 22 is biased by the pointer spring, and the sealing surface 33 is in close contact with the lid 26 to maintain airtightness. When the negative pressure further increases and the negative pressure in the dust collection amount display device 21 becomes larger than the atmospheric pressure, the pointer spring 23
Is lost, the pointer 22 moves to the connecting cylinder 28, and the opening 25
It was configured so that more air could enter into the main body dust collection chamber 27.

In such a conventional configuration, the pointer of the dust collection amount display device does not operate until the negative pressure in the dust collection chamber becomes larger than the atmospheric pressure. Therefore, since no operation is performed until a certain amount of dust accumulates in the paper bag, it is difficult to determine the initial degree of dust accumulation.

The present invention solves such a problem, and provides a dust collection amount display device capable of continuously displaying a negative pressure in a dust collection chamber and displaying a large amount of dust accumulated in a paper bag from a small amount to a large amount. It is intended to do so.

Means for Solving the Problems In order to solve this problem, the present invention provides a thin film member having elasticity at the end of the pointer at the end of the dust collection amount display device on the side opposite to the connecting pipe, and by elongating the thin film member The amount of negative pressure in the dust collecting chamber, that is, the amount of dust in the paper bag is continuously displayed by the moving pointer.

Operation With this configuration, since the thin film is provided at the end of the pointer tube of the dust collection amount display device on the side opposite to the connecting pipe, the thin film expands and contracts due to the negative pressure inside the dust collection amount display device. The amount of negative pressure, that is, the amount of dust in the paper bag can be continuously displayed by the position of the pointer fixed to the thin film.

Embodiment A display device for a dust collection chamber for a vacuum cleaner according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2. FIG. As shown in the figure, a dust collection chamber 2 and a motor 3 provided in the main body 1 are provided, and a dust collection amount display device 5 is disposed on an upper storage lid 4 in the front dust collection chamber 2 on the main body.
A pressure state in the dust collection chamber 2 is displayed through a window hole 7 provided in the storage lid 6. The dust collection amount display device 5 has a pointer cylinder 10 held on an outer peripheral surface of an end portion of a coupling cylinder 9 for coupling to the upper storage lid 4, and a pointer 11 is disposed inside the pointer cylinder 10. The pointer 11 is held by a thin film member 12 having elasticity.
Is fixed to the holding frame 13 fitted into the holding frame 13.

If dust accumulates in the paper bag 8 during cleaning, the inside of the dust collection chamber 2 becomes a negative pressure, the inside of the pointer cylinder 10 of the dust collection amount display device 5 becomes a negative pressure, the thin film body 12 extends, and the pointer 11 moves to the connecting cylinder 9 side. Move (shown by a broken line in the figure). Since the thin film body 12 gradually expands according to the pressure in the pointer cylinder 10, the amount of dust in the paper bag during cleaning can be grasped from the beginning.

According to the present invention, as is apparent from the above description of the embodiment, the movement of the pointer of the dust collection amount display device is performed by expansion and contraction of the thin film body, so that the number of parts is reduced and the structure is reduced. Can also be simplified. Furthermore, the pointer spring that biases the pointer greatly varies depending on the manufacturing conditions. However, the structure of the present invention has the effect of reducing the dispersion of the pointer movement because it is easy to make a uniform part with even more variation. can get.

[Brief description of the drawings]

FIG. 1 is a partially cutaway sectional view of a vacuum cleaner according to one embodiment of the present invention, FIG. 2 is a longitudinal sectional view of the dust collecting amount display device, and FIG. 3 is a longitudinal sectional view of a conventional dust collecting amount display device. FIG. 4 is a vertical sectional view of the vacuum cleaner. 2 ... dust collection chamber, 5 ... dust collection amount display device, 6 ... storage lid,
7 ... window hole, 8 ... paper bag, 9 ... connecting cylinder, 10 ... pointer cylinder, 11 ... pointer, 12 ... thin film body, 13 ... frame body.

Continuation of the front page (56) References JP-A-56-139730 (JP, A) JP-A-2-140124 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) A47L 9 / 00,9 / 19

Claims (1)

(57) [Claims] A dust collecting chamber provided at a front portion of the cleaner body; a dust collecting amount display device provided at an upper portion of the dust collecting chamber; a driving device provided at a rear portion of the main body; Provided with a suction port provided, a connecting pipe connected to the dust collecting chamber, a pointer cylinder communicating with the dust collecting chamber through the connecting pipe, a pointer on a cylinder moving in the pointer cylinder, A dust collecting amount display device for a vacuum cleaner, comprising: a stretchable thin film member fixed to the center of the rear end of the pointer and fixed to the end of the pointer tube on the side opposite to the connecting pipe.