JPH0497720A - Vacuum cleaner - Google Patents

Abstract

PURPOSE:To protect the title cleaner against temperature by means of a simple constitution by forming a hollow part in the bumper made of elastic material which makes the cover of dust chamber and the lower part of the body airtight, and installing an opening in the bumper to make the hollow part and the dust chamber communicate with each other. CONSTITUTION:In the body of a vacuum cleaner which is constituted connecting upper part of the body 12 and lower part of the body 11, a dust chamber 14 is formed of the lower part of the body 11 and the cover 13 of the dust chamber, and bumper 15 is formed of an elastic body that makes the cover of dust chamber 13 and lower body 11 airtight. In the bumper 15, a hollow part 17 is formed and an opening 18 is formed to make the hollow part 17 communicate with the dust chamber 14. If the pressure of dust chamber is decreased because of the stuffed dust in a hose, etc., the bumper will contract. Because of this contraction, a gap will occur between the cover of dust chamber and the lower part of the body and the air will flow in from the outside of the vacuum cleaner through the gap. Even if the air flow through the hose is closed, remarkable temperature rise of the body can be prevented and be deformation of the resin components on the discharge side can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a vacuum cleaner with temperature protection means.

BACKGROUND OF THE INVENTION Vacuum cleaners are generally equipped with temperature protection means to prevent internal temperatures from overheating.

Conventionally, this type of vacuum cleaner has been constructed as shown in FIGS. 4 and 5.

That is, a temperature protector 42 is provided in the dust collection chamber 41 provided in the front part of the vacuum cleaner body, and this temperature protector 42 has a lid 44 for opening and closing an opening 43 provided in the front wall of the dust collection chamber 41, and a lid 44 for opening and closing the opening 43 provided in the front wall of the dust collection chamber 41. It consists of a spring 45 that urges the lid 44 toward the opening 43. When the paper bag 46 set in the dust collection chamber 41 becomes full of dust, the pressure inside the dust collection chamber 41 decreases, and a force greater than the biasing force of the spring 45 is applied to the lid 44, causing the lid 44 to move. The opening 43 is in an open state so that air can flow into the dust collection chamber 41 from the outside.

Problems to be Solved by the Invention However, with such a structure, the structure of the temperature protector 42 is complicated, and there is a limit to the size of the opening 43. If the vacuum cleaner is operated for a long period of time, the air intake capacity from the opening 43 will exceed the heat resistance temperature of the resin material that makes up the vacuum cleaner body.
There was a problem with heat deformation on the exhaust side.

The present invention has been made in consideration of the above-mentioned conventional problems, and an object of the present invention is to provide a vacuum cleaner that can provide temperature protection with a simple configuration.

Means for Solving the Problems In order to achieve the above object, the vacuum cleaner of the present invention has a hollow bumper made of an elastic material that air-tights the dust collection chamber lid forming the dust collection chamber and the bottom of the main body. However, the bumper is provided with an opening that communicates the hollow part with the dust collection chamber.

Effect In the above configuration, if the hose etc. is clogged with dirt and the pressure in the dust collection chamber is reduced, the hollow part inside the bumper also communicates with the dust collection chamber through the opening, so the pressure in the hollow part is also reduced, causing the entire bumper to contract. . This shrinkage of the bumper creates a gap between the bumper, the dust collection chamber, and the lower part of the main unit, and a large amount of outside air flows into the dust collection chamber through this gap, preventing the vacuum cleaner from becoming deformed due to a rise in temperature within the main body. , deterioration of function and performance can be prevented.

EXAMPLE Hereinafter, an example of the present invention will be described based on FIGS. 1, 2, and 3.

In the figure, reference numeral 11 denotes a lower main body that is combined with an upper main body 12 to form the main body of the vacuum cleaner.
A dust collection chamber 14 is formed.

This dust collection chamber cover 13 is pivoted at the rear part on the main body top 12 and can be opened and closed. A bumper 15 for air tightness is provided at the joint between the lower main body 11 and the dust collection chamber cover 13. The bumper 15 is made of an elastic material such as rubber, and is inserted into a groove 16 integrally formed in the lower part 11 of the main body. Further, the bumper 15 has a hollow portion 17 and an opening 18 that communicates the dust collection chamber 14 with the hollow portion 17.

In the above configuration, if the hose attached to the dust collection chamber 14 is clogged with dust during cleaning work and the pressure inside the dust collection chamber 14 is reduced,
Since the hollow part 17 inside the bumper 15 is also depressurized through the opening 18 provided in the bumper 15, the entire bumper 15 contracts. Therefore, a gap is created between the dust collection chamber cover 13 and the lower body 11, and air from outside the vacuum cleaner body flows in through this gap, so the temperature inside the body does not rise significantly and the body does not deform. do not.

The bumper 15 may be made of elastic synthetic resin other than rubber, and the mounting means are not limited to the structure shown in the drawings.

Effects of the Invention As is clear from the description of the above embodiments, the vacuum cleaner of the present invention has a hollow part formed in the bumper that air-tights the dust collecting chamber lid forming the dust collecting chamber and the bottom of the main body. Since the bumper has an opening that communicates with the dust collection chamber, the bumper contracts when the dust collection chamber is depressurized due to dust getting stuck in a hose or the like. As a result, a gap is created between the dust collection chamber lid and the bottom of the vacuum cleaner, and air from outside the vacuum cleaner's body flows through this gap, so even if the air flows from the hose or is sealed, the temperature inside the vacuum cleaner will rise significantly. The deterioration of function 7 performance can be prevented without causing any rise or deformation of the resin parts on the exhaust side.

Furthermore, since the temperature protector can be constructed using the bumper, no other special members are required, which has the advantage of simplifying the structure and ensuring reliable operation.

[Brief explanation of the drawing]

1 and 2 are sectional views of main parts of a vacuum cleaner according to an embodiment of the present invention, and FIG. 3 is a perspective view of the same vacuum cleaner,
FIG. 4 is a sectional view of a conventional vacuum cleaner, and FIG. 5 is an enlarged sectional view of the main parts thereof. 11...Bottom of the main body, 12...Top of the main body, 1
3...dust collection chamber lid, 14...dust collection chamber, 1
5...Bumper 17...Hollow part, 1
8...Opening. Name of agent: Patent attorney Shigetaka Awano and one other person 11---
Redoi A (7 points 15 --- Ha 1 brim 0 ~ IC-concave) Calculation f Ku-1 stroke: Hiru

Claims (1)

[Claims] A main body of a vacuum cleaner constructed by combining a main body top and a main body bottom, the dust collection chamber formed by the main body bottom and a dust collection chamber lid, and an elasticity that performs air tightness between the dust collection chamber lid and the main body bottom. 1. A vacuum cleaner comprising: a bumper made of a solid body, the bumper having a hollow portion and an opening that communicates the hollow portion with a dust collection chamber.