JPH10179462A - Intake port body for vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To scrape-up dust in a wide range without enlarging an intake port main body by holding a dust scrape-up material so as to be freely appearance possible in the radius direction of a rotary body, increasing the projecting quantity of the dust scrape-up material in a part where the dust scrape-up material faces the intake port and reducing the projecting quantity in a part apart from the intake port. SOLUTION: When negative sucking pressure is operated in a dust collecting turbin chamber, air in the lower part of the intake port body is took-in to the turbin chamber so as to rotate a turbin and the rotation of the turbin is transmitted to a rotary cylinder 20 so as to rotation-drives the rotary cylinder 20. A shaft-shaped brush 26 is rotated in the periphery of a cam shaft 21 integratedly with the rotary cylinder 20 with the rotation of the rotary cylinder 20, the cam follower 26b of the shaft-shaped brush 26 slidingly contact-moves on a cam surface 24 and most of the shaft-shaped brush 26 is set inside the rotary cylinder 20 by the spring force of a coil spring 27 on a semicircular cam surface. When the cam follower 26b is moved on the front side cam surface of a cam projecting part, the shaft-shaped brush 26 is projected out from the rotary cylinder 20 by the front side cam surface.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suction port for a vacuum cleaner having a dust-raising member which can come and go from the peripheral surface of a rotating body.

[0002]

2. Description of the Related Art As a suction port body used in a conventional vacuum cleaner, a main body case having a suction port extending left and right is provided on a lower surface, and a suction port body disposed along the suction port and provided at both ends of the main body case. 2. Description of the Related Art There is known a rotary cleaning body that is rotatably held and includes a driving unit such as an air turbine or a motor that rotationally drives the rotary cleaning body. In addition, the rotary cleaning body includes a type in which a brush is implanted on a rotary shaft that is driven to rotate by a driving unit, a type in which a blade is provided on the rotary shaft, and the like.

[0003] In such a suction port body, by driving a rotating shaft by a driving means, a dust-raising member such as a brush or a blade scrapes up dust on a cleaning surface and sucks up the dust. The air is sucked into the main body case by the negative air pressure acting on the body.

[0004]

However, since the tip of the dust-raising member only moves along a circular locus when the rotary shaft rotates, the contact position of the dust-raising member on the cleaning surface is circular. There is a problem that the dust can only be scraped up in the approximate lower end position of the trajectory and a small range before and after the position.

[0005] In particular, since it is difficult for the dust-raising member to lift up the dust on the cleaning surface at the position of the front edge of the suction port, it is necessary to clean the wall by the suction port. However, it was difficult to clean a portion having a predetermined width from the wall of the cleaning surface.

SUMMARY OF THE INVENTION Accordingly, it is a first object of the present invention to provide a suction port of an electric vacuum cleaner capable of sweeping dust over a wide area without increasing the size of the suction port main body. It is a second object of the present invention to provide a suction port for a vacuum cleaner that can be cleaned.

[0007]

Means for Solving the Problems In order to achieve the first object, an invention according to claim 1 is characterized in that a main body case having a suction port extending in the left-right direction formed on a lower surface, and rotatable along the suction port. A rotary cleaning body held by the main body case, wherein the rotary cleaning body is rotatably held by the main body case and includes a driving means for driving the rotary cleaning body to rotate. A rotating body that can be rotated,
A dust-raising member held in the rotating body so as to be able to protrude and retract in the radial direction; In a portion where the scraping member is apart from the suction port, a suction port body for a vacuum cleaner including a scraping member driving means for reducing an amount of protrusion of the dust scraping member from the rotating body is provided.

In order to achieve the second object, the invention of claim 2 is characterized in that the scraping member drive means projects the dust scraping member at least at the front end side of the suction port to the maximum. I do.

Further, according to a third aspect of the present invention, the rotating body is a hollow cylindrical rotating body, and the raking member driving means is disposed in the cylindrical rotating shaft and fixed to the main body case. The camshaft is provided with an engagement means for engaging the dust scraping member with a cam surface of the camshaft.

[0010]

Embodiments of the present invention will be described below with reference to the drawings.

<First Embodiment> In FIG. 5A, reference numeral 1 denotes a suction port of a vacuum cleaner according to the present invention. The suction port body 1 has a suction port main body 2 and a connection pipe 3. The suction port main body 2 has a main body case 4, and the main body case 4 has an upper case 5 and a lower case 6. Reference numeral 7 denotes a bumper rubber interposed between the cases 5 and 6.

As shown in FIGS. 5B and 5C, the lower case 6 has a bottom wall 6a, and a front side wall 6b, a rear side wall 6c, a left side wall 6d, and a right side wall rising from the bottom wall 6a. 6e. A suction port 8 is formed on the front side of the bottom wall 6a and extends to the vicinity of both left and right end portions. Is formed.

In addition, a pair of partition walls 10 and 11 which stand up from the bottom wall 6a and are connected to the partition wall 9 and the rear side wall 6c are provided at a rear middle portion of the bottom wall 6a in the left-right direction.
The partition walls 10 and 11 are provided at intervals on the left and right. Further, partition walls 12 and 13 are formed at the left and right ends of the bottom wall 6a to extend back and forth along the left and right edges of the suction port 8.

A turbine chamber 14 is formed between the partition walls 9, 12, 13 and the upper case 5.
A suction chamber 15 is formed between 10 and 11 and the upper case 5, and a communication port 16 for communicating the turbine chamber 14 and the suction chamber 15 is formed substantially at the center of the partition wall 9 in the left-right direction. The connection pipe 3 described above is connected to a substantially center of the turbine chamber 14.

The partition walls 11 and 12 hold both ends of a bearing 17 extending left and right along the partition wall 9.
A turbine shaft 18 is rotatably held by 7, and a cage-type turbine 19 partially facing the opening 3 a of the connection pipe 3 is integrally mounted on one end of the turbine shaft 18 as a driving means.

In addition, a rotary cleaning body A is provided in the suction chamber 15. As shown in FIGS. 1A and 1B, the rotary cleaning body A includes a rotary cylinder (cylindrical rotary body) 20 extending along the suction port 8 and a cam shaft (a (Upper member driving means) 21. FIG. 2 (a)
As shown in the figure, small-diameter cylindrical portions 20a, 20a located at both ends.
And a large number of through holes 20b arranged in a spiral direction.

FIGS. 2A and 4A show the camshaft 21.
As shown in the figure, the mounting shaft portions 22, 22 at both ends and the mounting shaft portions 2
A cam portion 23 between the first and second cams 22 is provided. 2 (b) and 4 (c), a flat surface 22a for positioning is formed on the mounting shaft 22, and a locking recess 22b is formed on the upper portion of the mounting shaft 22. A cam surface 24 is formed on the peripheral surface of the cam portion 23 (see FIGS. 4A and 4B). The cam surface 24 has a semicircular cam surface 24 a having a constant radius, a front cam surface 24 b of a cam projection 23 b projecting toward the front edge of the suction port 8, and a cam projection protruding toward the rear edge of the suction port 8. And a front cam surface 24c of the portion 23c.

The small-diameter cylindrical portion 20a of the rotary cylinder 20 is rotatably held at an end of the mounting shaft 22 on the cam portion 23c side via a bearing 25.

The rotary cleaning body A includes a shaft-like brush (dust-raising member) 26 and a coil spring (engaging means) 27.
Having. The shaft brush 26 includes a shaft portion 26a inserted into the through hole 20b of the rotary cylinder 20, a hemispherical large-diameter cam follower 26b provided at an inner end of the shaft portion 26a, and an outer end portion of the shaft portion 26a. Has a brush 26c attached thereto. A coil spring 27 is interposed between the cam follower 26b and the inner surface of the rotary cylinder 20, and the coil spring 27 keeps the cam follower 26b on the cam surface 2 at all times.
Pressing on 4.

At both ends of the bottom wall 6, as shown in FIG.
Mounting wall 28 and camshaft fixing bosses 29, 29 extending back and forth
Are formed, and bearing mounting bosses 30, 30 are formed. The camshaft fixing bosses 29, 29 are provided integrally on the front and rear sides of the mounting wall 28, and are disposed outside the bearing mounting bosses 30, 30 in the left-right direction. A notch 28a for positioning is formed at the upper end of the mounting wall 28, and the camshaft 2 is formed in the notch 28a.
One mounting shaft 22 is disposed with the flat surface 22a facing downward, and an upper surface of the mounting shaft 22 has an arc-shaped fixing bracket 31.
Are engaged, and the locking projection 31a of the fixing bracket 31 is fitted into the locking recess 22b of the mounting shaft 22 as shown in FIG. 1 (b). Both ends of the fixing bracket 31 are fixed to the cam shaft fixing bosses 29, 29 with screws 32, 32.

Both ends of the rotary cylinder 20 are bearings 3
3 and rotatably held by a cylindrical shaft holding member 34. Mounting projections 30a, 30a are formed at 180 ° intervals on the outer periphery of the shaft holding member 34, and the mounting projections 30a, 30a are attached to the bearing mounting bosses 30, 30 via fixing screws 34a, 34a. Fixed.

The rotary cylinder 20 and the turbine shaft 18 are linked via a speed reduction mechanism 35 (interlocking means). The speed reduction mechanism 35 includes a toothed small timing pulley 36 fixed to the turbine shaft 18 and a small-diameter cylindrical portion 20 a of the rotary cylinder 20.
It has a large timing pulley 37 with teeth fixed to the outer periphery, and a timing belt 38 stretched over the timing pulleys 36 and 37.

Next, the operation of the suction port for a vacuum cleaner having such a configuration will be described.

The suction port body 1 having such a configuration is used by connecting the connection pipe 3 to an extension pipe (not shown) of the vacuum cleaner. When the vacuum cleaner is operated, an electric blower (not shown) of the vacuum cleaner starts sucking air, and the suction negative pressure at this time is applied to the vacuum cleaner (not shown), an extension pipe or the like. And acts on the dust collection chamber turbine chamber 14 via the As a result, the air below the suction port body 1 is generated by the suction port 8, the suction chamber 15,
After being sucked into the turbine chamber 14 through the communication port 16 and rotating the turbine 19, it is sucked into the electric blower through the connection pipe 3, the extension pipe (not shown), the dust collection chamber (not shown), and the like. .

On the other hand, the rotation of the turbine 19 is transmitted to the rotary cylinder 20 via the turbine shaft 18, the timing pulley 36, the timing belt 38, and the timing pulley 36, and the rotary cylinder 20 is driven to rotate.

With the rotation of the rotary cylinder 20, the shaft brush 26 is rotated around the cam shaft 21 integrally with the rotary cylinder 20, and the cam follower 26b of the shaft brush 26 slides on the cam surface 24. I do.

Then, the cam follower 26b is moved from the position (i) to
On the semicircular cam surface 24a in the range (ii), the axial brush 26
Of the coil spring 27 by the spring force of the coil spring 27. In this range, the shaft-like brush 26 is
Since it hardly projects from 0, the height of the upper case 6 can be reduced, and the distance between the rotary cylinder 20 and the front wall 6b can be minimized. Therefore, compared with the case where the diameter of the entire rotary cleaning body is increased to be scraped up over a wide range,
The intake body becomes smaller.

Further, the cam follower 26b is
When moving to the vertex (iii) side on the front cam surface 24b of b, the axial brush 26 is gradually protruded by the front cam surface 24b, and the cam follower 26b reaches the vertex (iii) of the front cam surface 24b. Sometimes, the shaft-like brush 26 is
When the cam follower 26b protrudes to the front side from 0 to the maximum and the cam follower 26b moves on the front cam surface 24b of the cam protrusion 23b from the vertex (iii) to the position (iv) between the cam protrusions 23b and 23c, the shaft brush 26 is Front cam surface 24b and coil spring 2
7 is gradually immersed in the rotary cylinder 20 by the action of the spring force.

Thereafter, when the cam follower 26b moves from the position (iv) to the vertex (v) side on the rear cam surface 24c of the cam projection 23c, the shaft brush 26 is gradually projected by the front cam surface 24c. When the cam follower 26b reaches the vertex (vi) of the front cam surface 24c, the axial brush 26
Protrudes to the rear side from the rotary cylinder 20 to the maximum, and the cam follower 26b is positioned on the rear side cam surface 24b of the cam protrusion 23c.
When moving from (v) to the position (i) side, the shaft brush 26 is gradually immersed in the rotary cylinder 20 by the action of the spring force of the front cam surface 24c and the coil spring 27.

Such a cam surface 24 and the coil spring 2
7, the brush 26c of the shaft brush 26 scrapes dust on the cleaning surface S from substantially near the front edge to near the rear edge of the suction port 8 in a range where the shaft brush 26 faces the suction port 8. Will be raised. As a result, when the front side of the suction port body 1 is moved to the side of the wall, the cleaning surface S can be cleaned almost to the vicinity of the wall.

Further, in the case where the dust on the cleaning surface is scraped up by the conventional rotating brush, since the tip of the brush rotates in a circular locus, the scraping force of the brush on the cleaning surface is at the lowest end. It is largest and becomes smaller before and after that, which is not preferable. However, in the structure of FIG. 1 described above, the brush 26c of the shaft-like brush 26 sweeps up the dust on the cleaning surface S with a substantially uniform scraping force from substantially near the front edge to near the rear edge of the suction port 8. Therefore, dust on the cleaning surface can be scraped up in a wide range in the moving direction of the suction port body, and the scraping effect can be improved.

In the above-described embodiment, the space between the protrusions 23b and 23c of the camshaft 21 is formed in a concave shape. However, the space between the protrusions 23b and 23c of the protrusion 21 is formed flat to form a shaft. The brush 26c of the brush 26 may be configured to scrape dust on the cleaning surface S with substantially uniform scraping force from substantially near the front edge to near the rear edge of the suction port 8. Further, the length of the brush 26c of the shaft-like brush 26 shown in FIG. 1A is made longer than that shown in FIG. Also, the scraping effect can be further increased.

<Second Embodiment> FIGS. 6 to 10 show a second embodiment of the suction port for a vacuum cleaner according to the present invention.

This embodiment is different from the first embodiment in that the camshaft 2
1 is inserted into the rotary cylinder 20 in place of the cylindrical cam shaft (raising member driving means) 40, and a positioning projection 28b is provided in the mounting wall 28 in place of the positioning notch 28a. U-shaped positioning portions 41 provided at both ends of the cam shaft 40
Are fitted to the protrusions 28b of the mounting wall 28, and the axis (center line) O1 of the cylindrical camshaft 40 is shifted downward from the rotation center O2 of the rotary cylinder 20. still,
Since other configurations are substantially the same as those of the first embodiment, the same or similar portions as those of the first embodiment are denoted by the same reference numerals as those of the first embodiment, and the description thereof will be omitted.

In this configuration, as the rotary cylinder 20 rotates clockwise in FIG. 6, the cam follower 26 b of the shaft brush 26 changes the cam surface (peripheral surface) 40 a of the cylindrical cam shaft 40. By the spring force of the coil spring 27. When the cam follower 26b reaches the upper end position (i) of the cam surface 40a, most of the shaft brush 26 is immersed in the rotary cylinder 20 and the cam follower 26b
Is turned toward the lower end position (ii) of the cam surface 40a.
It is made to protrude gradually from. In addition, the shaft-like brush 26
When the cam follower 26b reaches the lower end position (ii) of the cam surface 40a, it is made to protrude from the rotary cylinder 20 to the maximum, and this position (i
From the position (i) toward the upper end position (i), the rotary cylinder 20 is immersed in the rotary cylinder 20 by the spring force of the coil spring 27.

Also in this configuration, the amount of protrusion of the shaft-like brush 26 is relatively large at the portion facing the suction port 8, so that the brush 26 c of the shaft-like brush 26 is within the range where the shaft-like brush 26 faces the suction port 8. The dust on the cleaning surface S is scraped up from substantially near the front edge to near the rear edge of the suction port 8. As a result, when the front side of the suction port body 1 is moved to the side of the wall,
The cleaning surface S can be cleaned almost to the vicinity of the wall.

Since the coil spring 27 is formed in a conical shape, even if the coil spring 27 is compressed to the maximum, the coil spring 27 has a diameter corresponding to the diameter of the linear body forming the coil spring 27, and the coil spring 27 becomes a rotary cylinder. It is not a factor to increase the diameter of 20.

<Others> Further, the shaft-like brush 26 is the same as that shown in FIG.
As shown in FIG. 1A, the shaft 51a of the cam follower 51 and the brush holding shaft 52 are fitted into both ends of a metal or resin tube 50, and the brush 52a is held by the brush holding shaft 52. Is also good. In addition, the cam follower 51
May be hemispherical as shown in FIG.
It may be flat and flange-shaped as shown in FIG. Furthermore,
The cross-sectional shape of the tube 50 may be rectangular (square) as shown in FIG. 11C, oval as shown in FIG. 11D, or shown in FIG. 11E. It may be circular.

Further, as shown in FIG. 12 (a), when attaching the brush 26c to the shaft 26a, a tube 53 is provided at the end of the shaft 26a, and the end of the brush 26c is provided in the tube 53. Alternatively, the cylindrical portion 53 may be inserted into the cylindrical portion 53 and caulked by the caulking portion 53a. Further, as shown in FIG. 12B, the end of the brush 26c may be fitted to the cylindrical portion 53, and the brush 26c may be bonded and fixed in the cylindrical portion 53. Also,
The shaft brush 26 is, as shown in FIG.
Instead of 6c, a configuration in which a beater 54 made of a soft resin or rubber is attached to the cylindrical portion 53 may be adopted.

[0040]

As described above, according to the first aspect of the present invention, there is provided a main body case in which a suction port extending in the left-right direction is formed on a lower surface, and a rotary cleaning body rotatably held along the suction port. A suction body for a vacuum cleaner having a driving means for rotatingly driving the rotary cleaning body, wherein the rotary cleaning body is rotatably held by the main body case and rotated by the driving means; A dust-raising member held in a rotating body so as to be able to protrude and retract in the radial direction; and a portion where the dust-raising member faces the suction port, which increases the amount of protrusion of the dust-raising member from the rotating body, and In a portion where the upper member is away from the suction port, a configuration is provided in which a scraping member driving unit that reduces the amount of protrusion of the dust scraping member from the rotating body is provided. Dust It can be scraped.

According to the second aspect of the present invention, the scraping member drive means is configured to protrude the dust scraping member to the maximum at least at the front end side of the suction port. .

Further, according to a third aspect of the present invention, the rotating body is a hollow cylindrical rotating body, and the scraping member driving means is disposed in the cylindrical rotating shaft and fixed to the main body case. In addition to being a camshaft, it is configured to include an engagement means for engaging the dust scraping member with a cam surface of the camshaft.
Dust can be scraped up over a wide area without increasing the size of the entire suction port main body.

[Brief description of the drawings]

FIG. 1A is a sectional view taken along the line BB of FIG.
It is a fragmentary sectional view which meets a CC line of (a).

2A is a cross-sectional view of the rotary cleaning body taken along line CC of FIG. 5A, and FIG. 2B is a partial side view of FIG. 2A as viewed from the right.

FIG. 3 is a cross-sectional view taken along line DD of FIG. 5 (a).

4A is a perspective view of the camshaft shown in FIG. 1A, FIG. 4B is a sectional view of the camshaft, and FIG. 4C is an end view showing the shape of a mounting shaft of the camshaft. is there.

5 (a) is a perspective view showing an embodiment of the suction port body according to the present invention, FIG. 5 (b) is a perspective view showing a state in which the upper case is removed from FIG. 5 (a), and FIG. It is a top view.

FIG. 6 is a sectional view of a main part showing another embodiment of the suction port body of the present invention.

7 (a) is an explanatory view of a rotary cleaning body when the suction port body shown in FIG. 6 is cross-sectioned along the line CC as in FIG. 2 (a),
(b) is a right side view of (a).

FIG. 8 is an explanatory diagram showing a cross section of the suction port shown in FIG. 6 at a position similar to that of FIG. 1 (b).

FIG. 9 is an explanatory view showing a cross section of the suction port shown in FIG. 6 at a position similar to that of FIG. 3;

10A is a perspective view of the cylindrical rotary shaft shown in FIG. 6, and FIG.
(A) is a plan view of the cylindrical rotary shaft, and (c) is a cross-sectional view taken along line EE of (b).

FIGS. 11A to 11E are explanatory views showing another example of the structure of the shaft brush used in the present invention.

12 (a) to 12 (c) are explanatory views showing other structural examples of the shaft brush used in the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Suction port body 8 ... Suction port 4 ... Main body case A ... Rotary cleaning body 19 ... Turbine (drive means) 20 ... Rotating cylinder (cylindrical rotating body) 26 ... Shaft-shaped brush (dust collecting member) 21 ... Cam shaft (Raising member driving means) 40: cylindrical cam shaft (raising member driving means) 24: cam surface 27: coil spring (engaging means)

Claims (3)

[Claims] 1. A main body case having a suction port extending in the left-right direction formed on a lower surface, a rotary cleaning body rotatably held along the suction port, and a driving unit for rotating and driving the rotary cleaning body. In the suction opening for a vacuum cleaner, the rotary cleaning body is rotatably held by the main body case and rotated by the driving means, and dust held by the rotary body so as to be able to protrude and retract in a radial direction. The scraping member and the portion where the dust scraping member faces the suction port increase the amount of protrusion of the dust scraping member from the rotating body, and the portion where the dust scraping member is away from the suction port is the dust. A suction port body for a vacuum cleaner, comprising: a raking member driving means for reducing a protruding amount of the raking member from a rotating body. 2. The suction port body for an electric vacuum cleaner according to claim 1, wherein the scraping member driving means protrudes the dust scraping member to a maximum at least at a front end side of the suction port. 3. The rotating body is a hollow cylindrical rotating body,
The scraping member driving means is a camshaft disposed in the cylindrical rotary shaft and fixed to the main body case, and an engaging means for engaging the dust scraping member with a cam surface of the camshaft. The suction opening for a vacuum cleaner according to claim 1 or 2, further comprising: