JP3205768B2 - Suction cleaner suction tool - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suction device of a suction cleaner, and more particularly to an improved technique for preventing the suction device from sticking to a surface to be cleaned.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 8, a suction device of a suction cleaner has a peripheral portion of a lower surface 3 of a suction device body 1 and a surface 1 to be cleaned.
In general, a dust collecting action is performed by a flow of air sucked into the dust collecting chamber 5 through a gap b between the dust collecting chamber 5 and the dust collecting chamber 5. Further, from the viewpoint of noise reduction, an air inlet provided on the upper surface of the suction tool body has been proposed (Japanese Patent Publication No. Sho 61-61).
No. 42572).

[0003]

As described above, the above-mentioned conventional suction cleaner performs a dust collecting operation through the gap b between the surface 10 to be cleaned and the peripheral portion of the lower surface 3 of the suction tool main body. For this reason, the gap b has a subtle effect on the dust collection action. If the gap b is too small, the suction tool main body lower surface 3 and the surface to be cleaned 10 stick to each other to make dust collection impossible, or conversely too large. However, there is a drawback that the flow velocity of the sucked-in air becomes small and the dust collecting action is reduced. Further, when the surface 10 to be cleaned is a rug such as a carpet or a mat, these are sucked up and stuck to the lower surface 3 of the suction tool main body, making it difficult to move or significantly reducing the dust collecting action. Happened occasionally. Further, as described above, the cleaning surface 10
Surface to be cleaned 1
When the gap b between the zero and the peripheral portion of the lower surface of the suction tool main body 3 fluctuates, the load on the suction motor also fluctuates greatly, which not only adversely affects the suction motor itself but also prepares for this. In general, it is generally necessary to set a large capacity of the suction motor in advance. This has been an obstacle in reducing the cost, size, and energy saving of the suction cleaner. In the latter case, the air inlet is disposed on the upper surface of the suction tool main body 1 from the viewpoint of noise reduction. Instead of the gap b with the peripheral edge of the cleaning member 3, attention is paid to the sticking phenomenon at the air inflow portion that performs dust collection, that is, the gap between the lower end of the partition wall and the surface to be cleaned according to the present invention. It was not an aggressive twist. In view of such circumstances, the present invention eliminates the phenomenon of sticking to the surface to be cleaned, is easy to use, and has reduced fluctuations in the load on the suction motor. It is an object of the present invention to provide a suction device for a suction cleaner that can contribute to cost reduction, energy saving, and the like.

[0004]

Means for Solving the Problems To solve the above problems,
According to the first aspect of the present invention, the suction tool book facing the surface to be cleaned is provided.
On the lower surface of the body, a dust collection chamber communicating with the
The air introduction chamber communicating with the inlet is located on both sides of the partition wall.
And the air inlet is connected to the lower peripheral edge of the suction tool main body.
And the partition wall can be moved up and down.
And the projection provided at the bottom of the partition wall is
A biasing means is provided to bias downward so as to always contact the surface to be removed.
Between the surface to be cleaned formed between the projections and the lower part of the partition wall.
If a gap is always secured for the air flow,
The technical means referred to above were adopted. In the invention according to claim 2, the finishing
The lower part of the cutting wall is formed of a deformable flexible member,
The negative pressure in the dust collection chamber becomes higher than a certain value due to deformation of the conductive member.
We adopted the technical means of avoiding it. Claim 3
In the invention, a negative pressure regulating valve is provided on the partition wall, and the negative pressure regulating valve is provided.
Negative pressure in the dust collection chamber becomes more than a certain
We adopted technical measures to prevent this from happening. Claim
According to the fourth aspect of the invention, in front of the partition wall, along the partition wall,
Reverse so that it rotates only when the suction tool body is advanced
Technical means of installing a roller brush with a stop
It was adopted.

[0005]

The periphery of the lower surface of the suction device main body is simply configured as a moving support portion for the surface to be cleaned, and the gap for the dust collection action is provided by the movement support portion of the lower surface periphery of the suction device main body. The point that the partition wall portion whose positional relationship with the cleaning surface is relatively stable is selected , and the technical means according to claims 1 to 3 is added to the partition wall as means for preventing sticking. In addition to the above, not only the sticking phenomenon can be more reliably prevented, but also fluctuations in the negative pressure state of the dust collection chamber during dust collection are significantly reduced. Therefore,
Load fluctuations on the suction motor are also greatly reduced. Ma
Further, as in the invention of claim 4, the partition wall is provided in front of the partition wall.
Rotates only when the suction tool body is advanced along the cut wall
A roller brush with a reverse rotation stop
For example, when the suction tool body moves forward,
Partition wall located immediately by brushing action based on
Dust is efficiently collected from the gap below the
When retracting the main unit, use a non-rotating roller brush.
The garbage is collected and the gap below the partition wall at the next advance
Dust is collected efficiently through

[0006]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 schematically show the entire suction tool according to an embodiment of the present invention. In the figure, reference numeral 1 denotes a suction tool main body, which is connected to a cleaner main body (not shown) via a connection pipe 2 and a hose. A substantially rectangular dust collection chamber 5 communicating with the connection pipe 2 via a connection port 4 is formed on a lower surface 3 of the suction tool body 1, and air is provided on the opposite side of the partition wall 6 with the partition wall 6 interposed therebetween. An introduction chamber 7 is formed and communicates with an air inlet 8 formed on the upper surface. In addition, 9 in the figure
Are grooves formed in the longitudinal end face of the dust collecting chamber 5 for guiding dust in the dust collecting chamber 5 toward the connection port 4;
Reference numeral 0 denotes a surface to be cleaned, 11 denotes a roller for reducing sliding during operation of the vacuum cleaner, 12 denotes a brush for removing attached dust and the like, and the groove 9, the roller 11, the brush 12, and the like are appropriately selected. Is added. FIG. 4 is an enlarged view of the partition wall 6 in the present embodiment, and an appropriate gap a between the partition wall 6 and the surface 10 to be cleaned, usually a gap of about 5 to 6 mm, is provided below the partition wall 6. An appropriate number of protrusions 13 are provided so that is formed. In addition, this partition 6
As shown in FIG. 3, is configured to be constantly biased downward by a spring 14 installed upward in the assembled state.

Next, the operation of this embodiment will be described.
When the operation switch of the cleaner main body (not shown) is turned on and the suction motor starts to operate, the dust collection chamber 5 is in a negative pressure state, so that the air inlet 8, the air introduction chamber 7, and the partition wall 6 are closed. Air flows into the dust collecting chamber 5 through the lower gap a. In this case, the air inlet 8 is provided at a portion other than the peripheral portion of the lower surface 3 of the suction device main body 1, and the air flows from the peripheral portion of the lower surface 3 of the suction device main body 1 as in the related art. Because it is not a method of sucking and collecting dust,
In principle, the sticking phenomenon does not occur at the peripheral portion as in the related art. In addition, the support of the roller 11 attached to the peripheral portion of the lower surface 3 of the suction tool main body 1 allows the posture change of the suction tool main body 1 itself when slid with respect to the surface to be cleaned 10 to be compared. Since the partition wall 6 is attached to the suction device main body 1 while being constantly urged downward through the spring 14 at the target, the followability to the surface 10 to be cleaned is improved. Is very good, and the gap a at the lower part of the partition wall 6, which is set to an optimum value in advance, is almost exactly held, so that not only the sticking phenomenon does not occur but also the optimum dust collecting action is always secured. Is done.

FIGS. 5 and 6 show another embodiment relating to the sticking prevention means added to the partition wall 6. FIG. In the above-described embodiment, the gap a at the lower portion of the partition wall 6 is accurately held by the contact with the surface 10 to be cleaned by the downward biasing of the spring 14, so that the lower end of the partition wall 6 and the surface 10 In the embodiment shown in FIG. 5, the lower part of the partition wall 6 is formed of a deformable flexible member 15, and the collecting member is deformed by the flexible member 15. By adjusting the negative pressure of the dust chamber 5 so as not to exceed a predetermined value, the dust chamber 5 is characterized in that the sticking phenomenon is prevented. In the embodiment shown in FIG. 6, a negative pressure adjusting valve 16 is provided on the partition wall 6 so that the negative pressure of the dust collecting chamber 5 does not exceed a predetermined value through the pressure adjusting action of the negative pressure adjusting valve 16. It is characterized in that the sticking phenomenon is prevented by adjusting.

FIG. 7 shows an embodiment in which a roller brush 17 is further provided in the air introduction chamber 7. In the case of the present embodiment, the roller brush 17 is disposed in the air introduction chamber 7, so that not only the space can be effectively used, but also, as described above, the suction tool main body 1 is moved to the surface 1 to be cleaned.
Since the variation of the posture of the suction tool main body 1 itself when it is slid with respect to 0 is relatively small, the brushing action in the air introduction chamber 7 is also stable, and the gap a and the like located immediately after that. Efficient dust collection by the dust collection section can be obtained. Incidentally, the roller brush 17, used as provided with a reverse rotation stopper to rotate only in the direction of rotation when advancing the intake Komigu body 1. In addition, roller brush 1
It is desirable that the flocking itself that constitutes 7 is formed of a material having elasticity. In this case, the flocking based on the elasticity of the bristle itself and the peeling action of the dust adhered to the surface 10 to be cleaned. Due to the brushing effect by the lifting action, an extremely good dust collecting action can be obtained. Note that the present invention is not limited to the above embodiment, and may change the shape of the dust collecting chamber 5 or the air introduction chamber 7 to another shape, or may be used in the peripheral portion of the lower surface 3 of the suction tool body 1. making changes to structure the movable support portion is free design.

[0010]

According to the present invention, the following effects can be obtained based on the above constitution. (1) According to the first to third aspects of the present invention, the suction phenomenon between the lower surface of the suction tool main body and the surface to be cleaned is more reliably prevented, so that the suction tool moves smoothly with respect to the surface to be cleaned. Very easy to use. (2) By preventing the above-described sticking phenomenon, fluctuations relating to the negative pressure state of the dust collection chamber during dust collection are greatly reduced, and thus fluctuations in the load on the suction motor are also significantly reduced. (3) This can contribute to miniaturization, cost reduction, energy saving, and the like of the suction motor . (4) According to the invention of claim 4, when the suction tool main body is advanced.
The brushing action based on the rotation of the roller brush
Therefore, efficiently from the gap below the partition located immediately after
Dust can be collected, and when the suction
Garbage is collected by no roller brush and the next step forward
Sometimes dust can be collected efficiently through the gap below the partition wall.
You. (5) Since the configuration is simple, a failure is unlikely to occur.

[Brief description of the drawings]

FIG. 1 is a perspective view of a suction tool according to an embodiment of the present invention as viewed from above.

FIG. 2 is a perspective view of the suction tool according to the embodiment of the present invention as viewed from below.

FIG. 3 is a longitudinal sectional view of the suction tool according to the embodiment of the present invention.

FIG. 4 is a perspective view showing a partition wall portion in the embodiment of FIG.

FIG. 5 is a perspective view showing another embodiment relating to a partition wall portion.

FIG. 6 is a longitudinal sectional view of a suction tool according to another embodiment of the present invention.

FIG. 7 is a longitudinal sectional view of a suction tool according to another embodiment of the present invention.

FIG. 8 is a longitudinal sectional view of a conventional suction tool.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Suction tool main body, 2 ... Connection pipe, 3 ... Lower surface of suction tool main body, 4 ... Connection port, 5 ... Dust collection chamber, 6 ... Partition wall, 7 ... Air introduction chamber, 8 ... Air inlet, 9 ... Groove , 10 ... surface to be cleaned, 1
DESCRIPTION OF SYMBOLS 1 ... roller, 12 ... brush, 13 ... protrusion, 14 ... spring, 15 ... flexible member, 16 ... negative pressure adjustment valve, 17 ... roller brush

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int. Cl. ⁷ , DB name) A47L 9/02 A47L 9/08

Claims (4)

(57) [Claims] 1. A lower surface of a suction tool main body facing a surface to be cleaned.
And the dust collection chamber that communicates with the cleaner body and the air inlet.
And the air introduction chamber through which the
The air inlets other than the lower peripheral edge of the suction tool body.
In addition to the partition wall, the partition wall can be moved up and down.
The projection provided at the bottom of the partition wall
Biasing means for biasing downward so as to abut when
The gap between the surface to be cleaned and the lower part of the partition wall formed between the projections
To maintain a constant gap for air circulation
A suction tool for a suction cleaner, characterized in that: 2. A lower surface of a suction tool main body facing a surface to be cleaned.
And the dust collection chamber that communicates with the cleaner body and the air inlet.
And the air introduction chamber through which the
The air inlets other than the lower peripheral edge of the suction tool body.
At the same time, the lower part of the partition wall can be deformed.
It is composed of a flexible member, and is deformed by the deformation of the flexible member.
Make sure that the negative pressure in the dust collection chamber does not exceed
The suction tool of the suction cleaner. 3. A lower surface of a suction tool main body facing a surface to be cleaned.
And the dust collection chamber that communicates with the cleaner body and the air inlet.
And the air introduction chamber through which the
The air inlets other than the lower peripheral edge of the suction tool body.
And a negative pressure control valve on the partition wall.
The negative pressure of the dust collection chamber is controlled by the pressure regulating action of the negative pressure regulating valve.
Characterized in that the pressure does not exceed a certain level
Vacuum cleaner suction tool. 4. A lower surface of a suction tool main body facing a surface to be cleaned.
And the dust collection chamber that communicates with the cleaner body and the air inlet.
And the air introduction chamber through which the
The air inlets other than the lower peripheral edge of the suction tool body.
At the part, and at the partition wall in front of the partition wall.
Only when the suction tool body is advanced along
That a roller brush with reverse rotation
The suction tool of the suction cleaner .