JPH0517014Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) This invention consists of a suction port body with a suction port for sucking dust formed on the bottom, and a suction port provided on the suction port body that moves the suction port body back and forth. The present invention relates to a suction port body for a vacuum cleaner equipped with wheels.

(Prior Art) Conventionally, the suction port body of a vacuum cleaner includes a suction port body with a suction port for sucking dust formed on the bottom surface, and wheels provided on the suction port body to move the suction port body back and forth. , and a brush provided on the bottom surface on the rear side of the suction port are known.

Then, when the suction port body is moved forward, the brush scrapes off dust adhering to the floor, etc., and the scraped dust is sucked through the suction port.

(Problem to be solved by the invention) However, in this type of suction port body, the brush is provided on the rear side of the suction port, so when the suction port body is moved backward, it will be scratched by the brush. The brush pushes out the collected dust backwards. For this reason, there was a problem in that the dust was not suctioned from the suction port, resulting in poor suction efficiency.

Similarly, the same problem occurs even with a type of suction port body in which a brush is provided in front of or before and after the suction port.

(Purpose of the invention) Therefore, this invention was made in view of the above problems, and its purpose is to reliably suck the dust scraped off by the cleaning member from the suction port provided on the bottom of the suction port body. The purpose of the present invention is to provide a suction port body that can perform the following functions.

(Means for solving the problem) In order to achieve the above object, this invention provides a suction port body having a suction port for suctioning dust formed on the bottom surface,
The suction port body of an electric vacuum cleaner is provided with wheels that are attached to the suction port body and move the suction port body back and forth, and is characterized by comprising a pair of openings located at the front and rear of the bottom surface of the suction port body, sandwiching the suction port therebetween; a cleaning frame body made of a frame-shaped body and provided within the suction port body so that it can tilt vertically via a support shaft provided in the middle in the front-to-rear direction so that one moves upward and the other moves downward, and having a pair of front and rear cleaning members located within the pair of openings; and a tilting member that operates to tilt the cleaning frame body up and down in response to the movement of the wheels that rotate when the suction port body moves forward and backward, so that the cleaning member on the traveling direction side moves upward as the suction port body progresses forward and backward.

(Function) According to the above structure, when the suction port body is moved forward, the cleaning frame body is tilted backward by the tilting member, and the cleaning member located in the front opening is moved upward. Further, when the suction port body is moved backward, the cleaning frame body is tilted forward by the tilting member, and the cleaning member located in the rear opening is moved upward.

(Example) Hereinafter, an example of the suction port body of a vacuum cleaner according to this invention will be described based on the drawings.

In FIGS. 1 to 12, reference numeral 1 denotes a suction port body, and this suction port body 1 includes a lower case 2 forming a bottom surface and an upper case 3 attached to this lower case 2.

A cover part 15 is formed at the rear of the upper case 3 to cover a connecting part 6b, which will be described later, and a box-shaped positioning part 15a with an open bottom is formed on the side surface of the cover part 15.
15a is provided. Positioning part 15a, 1
Bearing portions 15b are provided on the side walls 15d of 5a, respectively. Further, a pair of recesses 15c, 15c are provided in the rear wall 3a of the upper case 3 to allow tilting of the cleaning frame 4, which will be described later.

The bottom surface 2a of the lower case 2 has a cylindrical portion 8 formed with a suction port 8a for sucking dust, and a pair of rectangular openings 9a, 9 at positions sandwiching the cylindrical portion 8 from the front and back directions.
b is provided. Both side walls 2 of lower case 2
A concave bearing portion 13 is formed in the rear wall 2d, and a pair of concave portions 2c, 2c are formed in the rear wall 2d to allow tilting of the cleaning frame 4, which will be described later.

The lower case 2 is integrally formed with a plate-shaped wheel holder 10 extending rearward from a rear wall 2d located between the recesses 2c, 2c, and both side walls 10c of the wheel holder 10 are open at the top. , box-shaped positioning parts 10a, 10a that are matched with the positioning parts 15a, 15a of the upper case 3 are provided. A bearing portion 10b is provided on each side wall 10d and side wall 10c of each positioning portion 10a. Further, rollers 2 are provided at both front ends of the bottom wall 2a of the lower case 2.
1 and 21 are provided.

Reference numeral 4 denotes a cleaning frame made of a frame-like body, and support shafts 12, 12 are provided at the intermediate portions of both side surfaces of the cleaning frame 4, that is, at the intermediate portions in the front-rear direction. The supporting shafts 12, 12 are rotatably held by the bearings 13, 13, so that the cleaning frame 4 can be tilted back and forth.

A brush (cleaning member) 4a is attached to the front end of the cleaning frame 4, and is positioned within the opening 9a and moves upward when the cleaning frame 4 tilts backward. A brush (cleaning member) 4b is attached to the rear end of the cleaning frame 4 and is positioned within the opening 9b and moves upward when the cleaning frame 4 is tilted forward. Further, the rear end of the cleaning frame 4 has recesses 2c and 2.
Projecting plates 11, 11 are provided that extend rearward through the interior of c.

5 is a wheel that moves the suction port body 1 back and forth;
This wheel 5 includes two wheel bodies 5c, 5c, and an axle 5a is provided on the inner surface of one wheel body 5c.
A plurality of elastic pins 5d are provided at equal intervals around the axle 5a and abut against the upper and lower surfaces of the protruding plate 11 of the cleaning frame 4. An engaging protrusion 5e is provided at one end of the axle 5a, and a large diameter portion 5b is formed on the axle 5a, which is positioned by the positioning portions 10a, 15a of the lower case 2 and upper case 3.

Similarly, the inner surface of the other wheel body 5c includes a tubular axle 5f and a plurality of elastic pins arranged at equal intervals around the axle 5f and abutting on the upper and lower surfaces of the protruding plate 11 of the cleaning frame 4. 5d is provided.
A large diameter portion 5b is formed on the axle 5f and is positioned by positioning portions 10a and 15a of the lower case 2 and upper case 3. Then, the wheel 5 is assembled by inserting the engaging protrusion 5e of the axle 5a into the axle 5f.

The large diameter parts 5b, 5b of the wheels 5 are positioned by the positioning parts 10a, 10a of the lower case 2 and the positioning parts 15a, 15a of the upper case 3, and the axles 5a, 5f are positioned by the bearing parts 10b..., 15.
When the elastic pins 5d are rotatably held by the cleaning frame 4, the elastic pins 5d are positioned so as to come into contact with the upper and lower surfaces of the protrusion plate 11 of the cleaning frame 4. When the wheel 5 rotates in the forward direction, the plurality of elastic pins 5d sequentially abut against the upper surfaces of the protruding plates 11, 11 as the wheel 5 rotates, and the cleaning frame 4 is moved to the support shaft 1.
2 and 12, that is, the cleaning frame 4
It is designed to move the rear side downward.

Similarly, when the wheel 5 rotates in the backward direction, the plurality of elastic pins 5d move along with the rotation of the protruding plate 11,
11, the cleaning frame 4 is tilted about the support shafts 12, 12, that is, the front side of the cleaning frame 4 is moved downward.

The elastic pin 5d is set to have a strength that allows the cleaning frame 4 to be tilted, and is also set to be flexible so as not to interfere with the rotation of the wheel 5. In addition, in order to continuously maintain the tilting state of the cleaning frame 4, the elastic pins 5d provided on the right wheel 5 and the elastic pins 5d provided on the left wheel 5 are arranged alternately. Old and protruding board 1
It comes into contact with surfaces 1 and 11 alternately. The protruding plate 11 and the elastic pin 5d constitute a tilting member that tilts the cleaning frame 4.

Reference numeral 6 denotes a communication member in which a communication hole 16 is formed, and this includes a rectangular fitting part 6a that fits into the cylindrical part 8 provided in the lower case 2, and a connecting part 6b that is connected to the extension pipe 7. A recess 6c that allows the cleaning frame 4 to tilt is formed between the connecting portion 6b and the fitting portion 6a.

Next, the assembly of the suction port body configured as described above will be explained.

First, the inside of the openings 9a and 9b of the lower case 2 and the recess 2
The brushes 4a, 4b and protruding plates 11, 11 of the cleaning frame 4 are arranged in the interiors of the cleaning frame 4, and the support shafts 12, 12 of the cleaning frame 4 are placed in the bearings 13, 13 of the lower case 2
12 is rotatably held, and the cleaning frame 4 is attached to the lower case 2 so as to be tiltable in the front-rear direction. Then, while arranging the large diameter portions 5b, 5b of the wheels 5 within the positioning portions 10a, 10a of the lower case 2,
The axles 5a and 5f of the wheels 5 are connected to the bearing part 1 of the lower case 2.
0b... is held rotatably.

Next, the fitting portion 6a of the communication member 6 is inserted into the lower case 2.
, and the connecting portion 6b is placed on the wheel holding portion 10 of the lower case 2. Then, the cover part 15 and positioning parts 15a, 15 of the upper case 3
The upper case 3 is joined to the lower case 2 by aligning a with the wheel holding portion 10 and positioning portions 10a, 10a of the lower case 2.

Due to this connection, the axles 5a, 5f of the wheels 5 are rotatably held by the bearings 10b...
Large diameter portions 5b, 5b are positioning portions 10a, 10a,
15a, 15a, and displacement in the axial direction is prevented. Then, the upper case 3 is fixed to the lower case 2 with screws (not shown).
This completes the assembly of the suction port body 1.

If an extension pipe 7 connected to the vacuum cleaner body (not shown) via a hose (not shown) is connected to the connection part 6b of the suction port body 1, the suction port 8a of the lower case 2 will suck in dust. I have to go.

When this suction port main body 1 is moved forward, the wheel body 5
c, 5c rotate in the direction of the arrow shown in FIG. 4, and as a result of this rotation, the elastic pins 5d provided on both wheel bodies 5c, 5c alternately come into contact with the upper surfaces of the protruding plates 11, 11. . Due to this contact with the elastic pin 5d, the cleaning frame 4 tilts backward, and the brush 4
b protrudes downward from the opening 9b and comes into contact with the floor F. On the other hand, the brush 4a moves upward within the opening 9a and is in a retracted state.

In this state, the suction port body 1 moves forward, so only the rear brush 4b scrapes off the dust adhering to the floor surface F, and this scraped dust is scraped up on the front side of the brush 4b. Therefore, this dust is reliably sucked through the suction port 8a.

Moreover, since the brush 4a is retracted into the opening 9a and is spaced apart from the floor surface F, this brush 4a scrapes off the dust adhering to the floor surface F and pushes it forward. The problem of no longer being sucked from 8a does not occur.

When the suction port body 1 is moved backward, the wheel bodies 5c, 5
c rotates in the direction of the arrow shown in FIG. 5, and as a result of this rotation, the elastic pins 5d provided on both wheel bodies 5c, 5c come into contact with the lower surfaces of the protruding plates 11, 11 alternately. Due to this contact with the elastic pin 5d, the cleaning frame 4 is tilted forward, and the brush 4a projects downward from the opening 9a and comes into contact with the floor F. On the other hand, the brush 4b moves upward within the opening 9b and is in a retracted state.

In this state, the suction port body 1 moves backward, so only the front brush 4a scrapes off the dust adhering to the floor surface F, and this scraped dust is removed by the brush 4a.
Since the dust is collected on the back side of a, the dust is reliably sucked through the suction port 8a.

Moreover, since the brush 4b is retracted into the opening 9b and is spaced apart from the floor surface F, this brush 4b scrapes off the dust adhering to the floor surface F and pushes it backward, and the dust is removed from the suction port. The problem of no longer being sucked from 8a does not occur.

(Effect of the invention) This invention operates to tilt the cleaning frame vertically in accordance with the movement of the wheel that rotates when the suction port body moves in the front and back direction, so that the suction port body moves in the front and back direction. Since it is equipped with a tilting member that moves the cleaning member on the advancing direction side upward when moving forward, when the suction port body is moved forward, the cleaning frame body is tilted backward by the tilting member, and the cleaning member in front is moved upward. The cleaning member moves upward in the opening and is in a retracted state, and the cleaning member positioned in the rear opening protrudes downward from the opening and comes into contact with the floor surface. Then, the cleaning member at the back scrapes off the dust adhering to the floor surface, and the scraped dust is collected on the front side of the cleaning member, ensuring that this dust is sucked through the suction port. can do.

Additionally, when the suction port body is moved backward, the cleaning frame body tilts forward, the rear cleaning member moves upwards within the opening and is in a retracted state, and the front cleaning member protrudes downward from the opening and surfaces on the floor. comes into contact with. Then, the previous cleaning member scrapes off the dust adhering to the floor surface, and this scraped dust is collected behind the cleaning member, making sure that this dust is removed from the suction port. It has the effect of being able to be suctioned.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view showing the structure of the suction port body according to this invention, Fig. 2 is a side view of the suction port body of Fig. 1, and Fig. 3 is a sectional view showing the cross section of the suction port body. Fig. 4 is a sectional view showing the tilting of the cleaning frame when the suction port is moved forward, Fig. 5 is a sectional view showing the tilting of the cleaning frame when the suction port is moved backward, and Fig. 6 is a sectional view showing the tilting of the cleaning frame when the suction port is moved backward. The figure is a plan view showing the lower case, Fig. 7 is an explanatory view showing the inside of the upper case, Fig. 8 is a bottom view showing the cleaning frame, Fig. 9 is a bottom view showing the connecting member, 1
0 is a sectional view showing a cross section of the connecting member, FIG. 11 is a front view showing the configuration of a wheel, and FIG. 12 is a sectional view showing a cross section of the wheel. 1...Suction port body, 4...Cleaning frame body, 4a...
Brush, 4b...Brush, 5d...Tilt member, 8
a... Suction port, 9a... Opening, 9b... Opening.

Claims (1)

[Scope of Claim for Utility Model Registration] A suction unit for a vacuum cleaner that includes a suction port body with a suction port for sucking dust formed on the bottom, and wheels that are provided on the suction port body and move the suction port body back and forth. In the spout body, a pair of openings are provided on the bottom surface of the suction port body at front and rear positions sandwiching the suction port, and one of the openings is made of a frame-like body and moves upward via a support shaft provided at an intermediate portion in the front and back direction. a cleaning frame body having a pair of front and rear cleaning members provided in the suction port main body so as to be tiltable in the vertical direction so that the other one moves downward; The cleaning frame is actuated to tilt in the vertical direction in accordance with the movement of the wheels that rotate when moving in the direction, and when the suction port body moves forward and backward, the cleaning member on the advancing direction side is moved upward. A suction port body for a vacuum cleaner, comprising a tilting member.