JPH0237852Y2 - - Google Patents

Description

[Detailed Description of the Invention] Purpose of the Invention (Field of Industrial Application) This invention relates to a mechanism for preventing the leakage of dust in a dust box in a sweeper.

(Prior Art) First, the outline of the conventional sweeper shown in FIG. 9 will be explained. A main brush chamber 1 is provided in the lower part of the vehicle body, and a main brush 2 is supported within the chamber so as to be swingable in the vertical direction and rotatable in the direction of the arrow. A dust box 3 is removably fitted into the vehicle body at the front side of the main brush chamber 1, and its entrance 3a faces the main brush 2. Lips 4 and 5 are attached to the rear side and both left and right sides of the outer peripheral edge of the lower end of the main brush chamber 1 and to the lower edge of the entrance 3a of the dust box 3, respectively, so as to surround the opening at the lower end of the main brush chamber 1. A lip 6 that closes the upper part of the entrance 3a of the dust box 3 is attached to the front side of the outer peripheral edge of the upper end of the dust box 1. As the main brush 2 rotates, dirt on the ground is swept up into the main brush chamber 1. At this time, each of the lips 4, 5, and 6 prevents the leakage of dust. Among the dust swept up by the main brush 2, heavy objects are swept into the dust box 3 through the inlet 3a.

A blower chamber 7 equipped with a blower 8 is provided above the main brush chamber 1, and a blower chamber 7 is provided above the main brush chamber 1.
It is designed to suck up fine, light dust, etc. from the dust swept up by the vacuum cleaner. A filter chamber 9 equipped with a filter 10 is provided on the rear side of the blower chamber 7, and is configured to filter dust and the like sent out from the blower 8. The air separated from dust and the like passes through the inside of the hood 11 and is discharged to the outside of the vehicle. Dust and the like adhering to the filter 10 are shaken off into a dust pan 13 by the vibration of the shaker 12.

Note that 14 is a side brush, and 15 is a motor for driving the main brush 2 and the blower 8.

(Problems to be Solved by the Invention) In the above-mentioned sweeper, cleaning work is carried out in a state where the lip 5 of the dust box 3 is always separated from the main brush 2 by a gap S. However,
For example, when the vehicle is running without cleaning, the dust in the dust box 3 may be moved to the entrance 3 due to vibrations of the vehicle body.
There was a risk that the liquid would spill onto the ground through the gap S and the gap S. This dust leakage is particularly noticeable when the sweeper climbs a slope or when the dust box 3 is full of dust.

Structure of the invention (means for solving the problem) In view of this problem, the present invention has a main brush that sweeps up dust by rotation, and a dust brush that sweeps heavy objects among the dust swept up by this main brush. In a sweeper equipped with a box, a blower that sucks up light dust, etc. among the dust, and a filter that filters the dust etc. sent out from the blower,
A lip is attached to the lower end edge of the entrance of the dust box so as to face the main brush, and the dust box can be adjusted to move between a position where the lip is separated from the main brush and a position where it is in contact with the main brush.

(Function) Then, the sweeper can perform cleaning work with the dust box moved and its lip separated from the main brush with a gap.

On the other hand, when cleaning is not being performed, for example, when the sweeper is climbing a slope or the dust box is full of dust, if the dust box is moved and its lip comes into contact with the main brush, the dust that has fallen through the inlet onto the lip will be removed. is swept into the dust box again by the rotational force of the main brush.

(Embodiment 1) The sweeper according to the first embodiment of the present invention will be described below with reference to FIGS.
This will be explained according to the diagram.

The dust box 3 is rotatably supported by support pins 17 on both the left and right sides of the front part of the receiving part 16, which has a U-shaped cross section and is fixed on both the left and right sides of the lower part of the vehicle body, and its entrance 3a moves in the vertical direction. It is becoming possible to do so. U-shaped hook portions 18 are fixed to both left and right rear portions of the dust box 3, and bent portions 19a at both lower ends of a gate-shaped handle 19 housed inside the hood 11 are connected to the hook portions 18.
8, it is inserted from behind. The handle 19 is adapted to be hooked onto two upper and lower hook portions 20b and 20a fixed to the vehicle body inside the hood 11. When the handle 19 is hooked on the lower hook portion 20a as shown in FIGS. 1 and 3, the handle 19 is attached to both hook portions 18 of the dust box 3
The bent portions 19a of the dust box 3 are separated, and the dust box 3 rotates downward around the support pins 17 under its own weight.
At the lower movement position, the lip 5 of the dust box 3 is separated from the main brush 2 with a gap S therebetween. In this state, the sweeper can perform cleaning work. Furthermore, both bent portions 19a of the handle 19 are simply inserted into both hook portions 18 of the dust box 3 from behind, and these are separated from each other in the cleaning state.
When the dust box 3 is moved into and out of the vehicle body, insertion and removal between the hook portion 18 and the bent portion 19a is performed without any problem, and the dust box 3 can be easily attached and removed.

On the other hand, when cleaning work is not being performed, for example, when the sweeper is climbing a slope or when the dust box 3 is full of garbage, the handle 19 is lifted and hooked onto the upper hook portion 20b, as shown in FIGS. 2 and 4. Then, both bent portions 19a of the handle 19 are engaged with both hook portions 18 of the dust box 3, and the dust box 3 is rotated upward around both support pins 17, and its inlet 3a is moved upward to remove dust. The lip 5 of the box 3 contacts the main brush 2. In this state, the lip 5 is always in contact with the main brush 2 rotating in the direction of the arrow, so the dust that has fallen onto the lip 5 through the inlet 3a is returned to the dust box 3 by the rotational force of the main brush 2. It will be swept away and will no longer spill onto the ground. Note that when the dust box 3 is in the upward movement position, the height of the dust box 3 from the ground becomes high, which is advantageous when driving on a highly uneven ground.

(Example 2) Next, a second example shown in FIGS. 5 to 8 will be described.

In this embodiment, only the means for adjusting the movement of the dust box 3 is changed from the first embodiment, and a wire 21 is used in place of the handle 19. One end 21a of this wire 21 is attached to the mounting bracket 2.
A mounting pin 24 is inserted through this mounting bracket 22 and a bracket 23 on the rear side of the dust box 3, and is prevented from coming off by a clip 25. A lever 27 is rotatably supported on an operating handle 26 at the rear upper part of the vehicle body, and a boss portion 27 of the lever 27 is rotatably supported around a fixed shaft 28.
The other end 21b of the wire 21 is connected to a connecting portion 29 that projects rearward from a. One end of an arc-shaped link 30 is attached to this connecting portion 29 as a fulcrum 30a.
A spring 31 fixed to the operating handle 26 side is connected to the other end at a fulcrum 30b. Due to the bias of this spring 31, the fifth
As shown in the figure, the lever 27 is normally rotated downward via the link 30. This rotation of the lever 27 loosens the wire 21 and removes it from the dust box 3.
rotates downward by its own weight, and at the downward movement position, the lip 5 of the dust box 3 is separated from the main brush 2 with a gap S therebetween.

On the other hand, as shown in FIGS. 6 and 8, when the lever 27 is moved upward against the bias of the spring 31, the lever 27 is positioned beyond the dead point. As a result, the wire 21 is pulled, the dust box 3 is rotated upward, the inlet 3a thereof is moved upward, and the lip 5 of the dust box 3 comes into contact with the main brush 2.

Furthermore, when the dust box 3 is moved in and out of the vehicle body, it is sufficient to simply insert and remove the mounting pin 24 and the clip 25, so that the dust box 3 can be easily attached and removed.

Effects of the invention In short, according to the invention, the lip of the dust box can be brought into contact with the main brush, so the rotational force of the main brush is used to return the dust that has fallen onto the lip back into the dust box. In particular, when the sweeper climbs a slope or when the dust box is full of dust, leakage of dust in the dust box can be prevented.

[Brief explanation of the drawing]

1 to 4 show a first embodiment of the present invention,
Fig. 1 is a schematic sectional view showing the sweeper in the cleaning operation state, Fig. 2 is a schematic sectional view showing the upward movement of the dust box in the same sweeper, and Fig. 3 is the hook position of the handle in the sweeper shown in Fig. 1. FIG. 4 is a partial view showing the hooking position of the handle in the sweeper shown in FIG. 2, and FIGS.
The figures show the second embodiment, FIG. 5 is a schematic cross-sectional view showing the sweeper in the cleaning state, FIG. 6 is a schematic cross-sectional view showing the upward movement state of the dust box in the sweeper, and FIG. FIG. 8 is a partial perspective view showing a wire attachment structure, FIG. 8 is a partial view showing a lever rotation mechanism, and FIG. 9 is a schematic sectional view showing a conventional sweeper. 1 is the main brush chamber, 2 is the main brush, 3 is the dust box, 3a is the entrance, 5 is the dust box slip, 8 is the blower, 10 is the filter, 16 is the receiving part, 17 is the support pin, 18 is the hook part , 19 is a handle, 19a is a bent part, 20a, 20b are hook parts, 21 is a wire, 24 is a mounting pin, 25 is a clip, and 27 is a lever.

Claims (1)

[Scope of claim for utility model registration] 1. A main brush that sweeps up dust by rotation,
A sweeper equipped with a dust box into which heavy items of the dust swept up by the main brush are swept, a blower which sucks up light dust etc. from the dust, and a filter which filters the dust etc. sent out from the blower. In the sweeper, a lip is attached to the lower end edge of the entrance of the dust box so as to face the main brush, and the dust box can be moved and adjusted between a position where the lip is separated from the main brush and a position where it is in contact with the main brush. Mechanism to prevent dust from leaking inside the dust box. 2. A mechanism for preventing leakage of dust in a dust box in a sweeper according to claim 1, wherein the dust box is rotatably supported so that its entrance can move in the vertical direction.