JP4620145B2 - Hand vacuum cleaner - Google Patents

Description

  The present invention relates to a hand cleaner, and more particularly to a hand cleaner that can prevent brush abrasion as much as possible and can finely adjust the ground contact height of the brush.

  A hand-held vacuum cleaner rotates a wheel by pushing a handle with a hand, rotates a sweeping brush using the rotation as a driving force, and scrapes dust into a dust hopper.

There is a device described in the following Patent Document 2 as a hand-held vacuum cleaner having means corresponding to the wear of the brush, and there is an invention described in Patent Document 1 as an invention capable of adjusting the ground contact height of the brush.
JP 2004-267449 A Utility Model Registration No. 3107358

  In the hand cleaner, the sweeping brush rotates with the rotation of the wheel, so that the brush rotates even during movement not intended for cleaning, and the wear of the brush advances. Even at times other than cleaning, the brush tip is often deformed because the tip of the brush is always in contact with the floor surface. As the wear and deformation of the brush progresses, it becomes difficult for the brush tip to reach the floor surface to be cleaned, and the cleaning efficiency is significantly reduced.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a hand cleaner that can prevent the above-described brush wear and deformation as much as possible and can adjust the brush height even when the brush wear progresses. .

  In order to solve the above-described problems, the hand cleaner according to the present invention is configured as follows.

    Claim 1: The wheel is rotated by pushing the handle by hand, and the sweeping brush is rotated using the rotation, and the hand-held vacuum cleaner collecting dust in the dust hopper is provided integrally with the pair of wheels. A drive gear, a pair of panels provided adjacent to the wheels and rotatable about an axle, a driven gear provided on the panel and interlocking with the rotation shaft of the rotary brush, and both boards A rotating brush that is pivotally supported between them and a link mechanism that lifts and lowers the rotating brush by rotating the disc body were installed.

    [2] The hand cleaner according to [1], wherein the position of the arm constituting the link mechanism can be finely adjusted with an adjusting bolt.

  The following describes how the above-described solving means works to solve the problem with reference to the drawings.

  1 is a front view of a hand-held vacuum cleaner according to the present invention, FIG. 2 is an enlarged view of a main part in a state where the brush is grounded, and FIG. 3 is an enlarged view of an essential part in a state where the brush is pulled up. FIG. 5 is an enlarged right side view of the main part, and FIG. 5 is a perspective view of the wheel. In FIGS. 2 and 3, the wheels are omitted.

  As shown in FIGS. 2 and 3, the arm 11 constituting the link mechanism 10 is provided so as to be able to swing around the rotation shaft 9 of the wheel. The arm 11 is fixed by a disk body 7 and a fixing member 12, and the disk body 7 rotates around the rotation shaft 9 as the arm 11 swings. A rotating shaft 8 that supports the brush 5 is attached at a position off the rotating shaft 9 of the board 7, and the brush 5 moves up and down as the board 7 rotates. Such vertical movement allows the brush 5 to be grounded as shown in FIG. 2 or pulled up from the ground 13 as shown in FIG.

  That is, the state shown in FIG. 2 may be maintained at the time of cleaning, and on the other hand, if the state shown in FIG. 3 is maintained at the time of non-cleaning, the brush 5 can be prevented from contacting the ground surface 13. This makes it possible to prevent brush wear and deformation as much as possible.

  Furthermore, as a secondary effect, there is also an effect that extra labor of the worker can be reduced. That is, if the brush 5 is in a non-contact state with respect to the ground at the time of movement, the manual push cleaner can be pushed forward with less resistance than the contact state.

  Further, the hand cleaner according to the present invention is provided so that the position of the arm 11 can be finely adjusted by the adjusting bolt 14. For example, when the brush 5 is worn out and hardly reaches the ground surface 13, the adjustment bolt 14 is rotated from the state shown in FIG. 2 to swing the arm 11 slightly upward. As a result, the brush 5 moves slightly downward as the disc body 7 rotates. By such an operation, the brush 5 can be grounded again.

  Hereinafter, an embodiment of the preferred invention will be outlined.

  As shown in FIG. 1, a caster 16 is disposed in the front portion of the casing 15 whose bottom surface is open, and a pair of wheels 2 are disposed on the left and right outside the rear portion of the casing 15. The left and right wheels 2 are connected by an axle 9. A dust hopper 6 is detachably fitted in the casing 15. The dust swept up by the brush 5 is collected in the dust hopper 6. In FIG. 2 and FIG. 3, the brush 5 is indicated by an imaginary line, but an existing brush planted in a cylindrical body is used. Further, the handle 1 is attached to the rear portion of the casing 15 so as to be freely tilted. A rubber plate 17a that guides dust into the dust hopper 6 is provided in front of the brush 5, and a rubber plate 17b that prevents dust from scattering is provided in the rear.

  As shown in FIG. 5, a driving gear 3 is integrally provided on the wheel 2. In other words, the driving gear 3 rotates with the rotation of the wheels. The axle 9 is fitted into the hole 2a.

  The driving gear 3 is in a positional relationship with the driven gear 4 shown in FIGS. 2 and 3, and the driven gear 4 is attached to the rotating shaft 8 of the brush 5. Therefore, the brush 5 rotates with the rotation of the driving gear 3, that is, with the rotation of the wheel 2.

  As shown in FIGS. 2 to 4, the disk body 7 having a disk shape is provided adjacent to the wheel 2 so as to be rotatable around the axle 9. A rotation shaft 8 that pivotally supports the brush 5 is fitted in a hole (not shown) provided at a position off the center of the board body 7, and the brush 5 moves up and down as the board body 7 rotates. Will do.

  The board 7 and the arm 11 constituting the link mechanism 10 are fixed by a fixing member 12 made of bolts and nuts. On the other hand, the arm 11 is provided so as to be rotatable about the axle 9. With this structure, the disk body 7 rotates about the rotation shaft 9 as the arm 11 swings.

  The link mechanism 10 includes an arm 11, a connecting member 20, an adjustment bolt 14, a swing member 18, a bracket 19, and the like. As shown in FIG. 4, the bracket 19 fixed to the casing 15 is provided with a swinging member 18 so as to be swingable about a shaft body 22. Here, the swing member 18 is a substantially U-shaped plate body, and its end is bent to be provided with a pedal portion 18a. A shaft body 23 is provided in a pivotal shape on both sides of the swing member 18, and an adjustment bolt 14 is screwed or loosely inserted into the shaft body 23. The adjusting bolt 14 is provided with nuts 14a on both sides of the shaft body 23.

  The lower part of the adjustment bolt 14 is screwed into a hole provided in the shaft body 24. The shaft body 24 is provided in a pivotal shape with respect to the arm 11 and the connecting member 20. Here, the connecting member 20 is a plate body bent in a substantially U shape, and is fixed to the arm 11.

  Since the link mechanism 10 is configured as described above, if the link mechanism 10 is pushed down by a means such as stepping on the pedal portion 18a in the cleaning state shown in FIG. 18 is swung, and along with this, the adjusting bolt 14 and the adjusting bolt 14 are attached, the shaft body 24 is pushed down, the arm 11 connected to the shaft body 24 is swung downward, and the brush 5 is lifted. It is. On the contrary, when the pedal portion 18a is lifted in the non-cleaning state shown in FIG. 3, that is, in a state where the brush 5 is not grounded, the swing member 18 swings, and accordingly, the adjustment bolt 14 and the adjustment bolt 14 are moved. As a result, the shaft body 24 is lifted upward, the arm 11 connected to the shaft body 24 swings upward, and the brush 5 descends to reach the grounding state.

  A tension spring 21 is interposed between the swing member 18 and the lower edge of the casing 15. The tension spring 21 locks the state shown in FIGS. 2 and 3, that is, the brush position during cleaning and non-cleaning.

  The adjustment bolt 14 is provided with nuts 14a on both sides of the shaft 23. Therefore, by rotating the adjustment bolt 1, the shaft body 24 can be slightly moved up and down and fixed. The arm 11 connected to the shaft body 24 is slightly swung and fixed by this vertical movement, that is, the position of the brush 5 is finely adjusted.

The front view of the hand-held vacuum cleaner which concerns on this invention. The principal part enlarged view of the state which grounded the brush. The principal part enlarged view of the state which pulled up the brush. The principal part expansion right view. The perspective view of a wheel.

Explanation of symbols

2 .. Wheel 3 .. Drive gear 4 .. Driven gear 5 .. Brush 7 .. Panel body 8 .. Rotating shaft 9 .. Axle 10 .. Link mechanism 11.

Claims (1)

In a hand-held vacuum cleaner that rotates the wheel by pushing the handle by hand, rotates the sweeping brush using the rotation, and collects dust in the dust hopper,
A driving gear (3) provided integrally with the pair of wheels (2);
A pair of panels (7) provided adjacent to the wheels (2) and rotatable about the axle (9);
A follower gear (4) provided on the board (7) and interlocking with the rotating shaft (8) of the rotating brush (5);
A rotating brush (5) pivotally supported between the two board bodies (7, 7);
An arm (11) fixed to the board (7) and swinging about the axle (9);
A connecting member (20), which is a plate body bent in a substantially U-shape, and is attached via an arm (11) and a pivotal shaft body (24);
A swinging member (18), which is a substantially U-shaped plate body, swingably attached to the casing (15) via a bracket (19);
A shaft (23) provided in a pivotal shape across both sides of the swing member (18);
An adjustment bolt (14) screwed or loosely inserted into the shaft body 23 and screwed into the shaft body 24;
A tension spring (21) interposed between the swing member (18) and the lower edge of the casing (15);
A hand-held vacuum cleaner consisting of

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