Motorized broom

Abstract

A motorized broom includes a handle, a universal connector, and a cleaning portion. The universal connector is used for connecting the handle and the cleaning portion. Thus, the universal connector together with the handle is rotatable relative to the cleaning portion universally, so that the cleaning portion is angle adjustable so as to clean the corner of the house exactly. In addition, the dust collector is removably mounted on the main base, so that the dust collector can be removed from the main base easily and rapidly, thereby facilitating a user removing the dust collector.

Description

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a broom, and more particularly to a motorized broom.

2. Description of the Related Art

A conventional broom comprises a handle, a cleaning portion mounted on the lower end of the handle, and multiple bristles mounted on the cleaning portion. However, the cleaning portion is fixed on the handle so that the angle and position of the cleaning portion cannot be adjusted to fit the corresponding angle and position of the corner of the house, thereby limiting the cleaning effect of the cleaning portion.

SUMMARY OF THE INVENTION

The present invention is to mitigate and/or obviate the disadvantage of the conventional broom.

The primary objective of the present invention is to provide a motorized broom that is angle adjustable.

Another objective of the present invention is to provide a motorized broom, wherein the universal connector together with the handle is rotatable relative to the cleaning portion universally, so that the cleaning portion is angle adjustable so as to clean the corner of the house exactly.

A further objective of the present invention is to provide a motorized broom, wherein the dust collector is removably mounted on the main base, so that the dust collector can be removed from the main base easily and rapidly, thereby facilitating a user removing the dust collector.

In accordance with the present invention, there is provided a motorized broom, comprising:

a handle having an elongated shape and a multi-stage structure, wherein the handle is provided with a switch, a mounting seat and a chargeable battery removably mounted on the mounting seat;

a universal connector connecting the handle and the cleaning portion and including a seat portion, a ball portion and a shank portion, wherein the seat portion is secured to the cleaning portion, the ball portion is pivotally mounted on the seat portion, and the shank portion has a lower end pivotally mounted on the ball portion, so that the universal connector together with the handle is rotatable relative to the cleaning portion freely and has an upper end connected to the handle;

a cleaning portion having a triangular shape and including a cover, a main base, and a dust collector, wherein the main base has a first side for mounting the seat portion and a second side provided with a motor chamber for mounting a motor, the motor is connected to the mounting seat by an electric wire and has a shaft having a gear meshing with a gear which is located at a central portion of two helical brushes to drive the helical brushes to rotate, each of the helical brushes has an end provided with a bevel gear meshing with a bevel gear of another helical brush, so that the helical brushes at three sides of the triangular cleaning portion are rotated inwardly and simultaneously, each of the helical brushes has brush portions arranged in a helical manner, each of the brush portions of the respective helical brush has multiple bristles and has a length reaching the ground, each of the three sides of the triangular cleaning portion is provided with an end brush that is rotated with the helical brushes simultaneously, the end brush has six brush portions arranged in a S-shaped manner to convey trash at a corner inwardly, the cover is mounted on the main base, the main base is mounted on the dust collector, the dust collector encompasses the brush portions, the dust collector has a peripheral wall formed with a ramp having a bottom formed with a scraper to introduce the trash into the dust collector, the main base has a downward vertical wall to conduct the direction of the trash so that the trash is pushed into the dust collector smoothly without being disturbed by the perturbation produced by rotation of the brush portions.

Further benefits and advantages of the present invention will become apparent after a careful reading of the detailed description with appropriate reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of a motorized broom in accordance with the preferred embodiment of the present invention;

FIG. 2 is a partially exploded perspective view of the motorized broom as shown in FIG. 1;

FIG. 3 is a partially exploded perspective view of the motorized broom as shown in FIG. 1;

FIG. 4 is a partially exploded perspective view of the motorized broom as shown in FIG. 1;

FIG. 5 is a plan cross-sectional view of the motorized broom as shown in FIG. 1;

FIG. 6 is a plan cross-sectional view of the motorized broom as shown in FIG. 1;

FIG. 7 is a schematic plan operational view of the motorized broom as shown in FIG. 1 in use;

FIG. 8 is a plan cross-sectional view of the motorized broom as shown in FIG. 1;

FIG. 9 is a plan cross-sectional view of the motorized broom as shown in FIG. 1;

FIG. 10 is a locally perspective view of the motorized broom as shown in FIG. 1;

FIG. 11 is a partially exploded perspective view of the motorized broom as shown in FIG. 1; and

FIG. 12 is an exploded perspective view of the motorized broom as shown in FIG. 9.

DETAILED DESCRIPTION OF THE INVENTION

Referring to the drawings and initially to FIG. 1, a motorized broom in accordance with the preferred embodiment of the present invention comprises a handle 1, a universal connector 2, and a cleaning portion 3. The handle 1 is provided with a mounting seat 11 and a chargeable battery 10 removably mounted on the mounting seat 11.

Referring to FIGS. 1 and 2, the handle 1 has a multi-stage structure and includes multiple sub-handles, wherein one sub-handle has an end provided with a stepped hole 13, a screw bore 131 and multiple protruding teeth 132, and another adjacent sub-handle has an end provided with a stepped post 14 inserted into the stepped hole 13, an outer thread 141 screwed into the screw bore 131 and multiple serrated grooves 142 engaged with the protruding teeth 132. Thus, the sub-handles of the handle 1 are combined with each other.

Referring to FIGS. 1 and 3, the universal connector 2 connects the handle 1 and the cleaning portion 3 to universally adjust the position of the triangular corners 34 of the cleaning portion 3 so that the triangular corners 34 of the cleaning portion 3 can reach the corner of a house or a furniture. The universal connector 2 includes a seat portion 23, a ball portion 22 and a shank portion 21. The seat portion 23 is secured to the main base 32 of the cleaning portion 3 and provided with two pivot points 231. The ball portion 22 is pivotally mounted on the two pivot points 231 of the seat portion 23. The shank portion 21 has a lower end provided with two pivot points 212 pivotally mounted on the ball portion 22, so that the universal connector 2 together with the handle 1 is rotatable relative to the cleaning portion 3 universally. The shank portion 21 has an upper end provided with an insert 211 formed with at least one insertion hole 2111, a limit slot 2112 and a flexible positioning plate 2113 having a positioning boss 2114. The handle 1 has a lower end provided with a mounting portion mounted on the insert 211 to form an electrical connection and formed with at least one plug 12 inserted into the insertion hole 2111, a protruding strip 121 limited in the limit slot 2112 and a positioning hole 122 to allow passage of the positioning boss 2114 so that the handle 1 is positioned on the shank portion 21.

Referring to FIGS. 1 and 4, the cleaning portion 3 has a triangular shape and includes a cover 31, a main base 32, and a dust collector 33. The main base 32 has a first side for mounting the seat portion 23 and a second side provided with a motor chamber 321 for mounting a motor 40. As shown in FIG. 10, the motor 40 has a shaft 41 having a gear 42 meshing with a gear 50 which is located at a central portion of two helical brushes 60 mounted on a periphery of the main base 32. The gear 50 is integrally formed with an axle 51 having two ends each formed with a flat insert 52 inserted into a flat recess 61 formed in one end of each of the helical brushes 60. As shown in FIG. 11, the other end of each of the helical brushes 60 has a bevel gear 62 meshing with a bevel gear 62a of another helical brush 60a. As shown in FIG. 4, an end brush 63 has a flat recess 631 to allow insertion of a flat insert 64 formed on one end of the respective helical brush 60. The end brush 63 has six brush portions 632 arranged in a S-shaped manner to convey the corner trash of the house inwardly. The main base 32 has a plurality of post holes 322 and two slots 323. The dust collector 33 has a plurality of posts 331 inserted into the post holes 322 and two elastic plates 332 snapped into the slots 323 so that the dust collector 33 is mounted on the main base 32 closely. Each of the elastic plates 332 has a tapered wedge block 3321 extended through the slots 323 and elastically retracted into the slots 323 to snap the dust collector 33 onto the main base 32. The main base 32 has a plurality of positioning holes 324 and a plurality of slidable locking members 325. The cover 31 has a plurality of downward extended columns 311 inserted into the positioning holes 324 and a plurality of depressions 312 snapped onto the locking members 325 so that the cover 31 is mounted on the main base 32 closely.

The chargeable battery 10 supplies an electric power which is transmitted by a switch 15 and an electric wire 16 to the motor 40, so that the motorized broom forms an electric loop.

Referring to FIG. 5, each of the brush portions 601 of the respective helical brush 60 has multiple bristles and has a length reaching the ground so as to clean the trash and dust exactly. The dust collector 33 has a peripheral wall formed with a ramp 333 having a bottom formed with a scraper 334 to scrape the trash by co-operation of the helical brush portions 601 so that the trash is pushed to pass through the ramp 333 into the dust collector 33. The main base 32 has a downward vertical wall 326 to conduct the direction of the trash so that the trash is pushed into the dust collector 33 smoothly without being disturbed by the perturbation produced by rotation of the helical brush portions 601.

In addition, the cover 31 covers the brush portions 601 efficiently to stop the trash, thereby preventing the trash from being carried outward by rotation of the helical brush portions 601.

In addition, as shown in FIG. 4, the main base 32 has windows 327 to facilitate a user inspecting if the trash contained in the dust collector 33 is full.

Referring to FIGS. 6 and 7, the main base 32 has triangular corners each formed with a box 328 for mounting a spherical support 35 rested on the ground, so that the scraper 334 and the brush portions 601 and 632 are spaced from the ground, thereby enhancing the cleaning effect of the brush portions 601 and 632.

In addition, as shown in FIG. 7, the universal connector 2 together with the handle 1 is rotatable relative to the cleaning portion 3 universally, so that the cleaning portion 3 is used to clean the corner of the house exactly.

Referring to FIGS. 1, 4 and 10, when the switch 15 is turned on, the chargeable battery 10 supplies an electric power to the motor 40 which is driven to rotate the gear 42 which rotates the gear 50 which rotates the helical brushes 60 which rotates the end brush 63 simultaneously. The helical brushes 60 also rotates other helical brushes 60a simultaneously by the bevel gears 62 and 62a. Thus, the brush portions 601 and 632 pushes the trash toward the dust collector 33.

In addition, the cover 31 has a bottom formed with a plurality of openings 313 spaced from the ground to facilitate the trash entering the helical brushes 60.

Referring to FIG. 8, each of the helical brushes 60 is provided with a dustproof ring 70 mounted on the connection between the box 328 and the respective helical brush 60 to prevent the dust from entering the box 328 to contaminate the bevel gears 62 and 62a.

Referring to FIGS. 6, 9 and 12, the spherical support 35 has an inside formed with a conical reduced hole 351, and the box 328 has two outwardly extended elastic plates 3281 inserted into the conical reduced hole 351, so that the spherical support 35 is mounted on the box 328 closely.

Accordingly, the universal connector 2 together with the handle 1 is rotatable relative to the cleaning portion 3 universally, so that the cleaning portion 3 is angle adjustable so as to clean the corner of the house exactly. In addition, the dust collector 33 is removably mounted on the main base 32, so that the dust collector 33 can be removed from the main base 32 easily and rapidly, thereby facilitating a user removing the dust collector 33.

Although the invention has been explained in relation to its preferred embodiment(s) as mentioned above, it is to be understood that many other possible modifications and variations can be made without departing from the scope of the present invention. It is, therefore, contemplated that the appended claim or claims will cover such modifications and variations that fall within the true scope of the invention.

Claims

1. A motorized broom, comprising:

a handle having an elongated shape and a multi-stage structure, wherein the handle is provided with a switch, a mounting seat and a chargeable battery removably mounted on the mounting seat;

a universal connector connecting the handle and the cleaning portion and including a seat portion, a ball portion and a shank portion, wherein the seat portion is secured to the cleaning portion, the ball portion is pivotally mounted on the seat portion, and the shank portion has a lower end pivotally mounted on the ball portion, so that the universal connector together with the handle is rotatable relative to the cleaning portion freely and has an upper end connected to the handle;

a cleaning portion having a triangular shape and including a cover, a main base, and a dust collector, wherein the main base has a first side for mounting the seat portion and a second side provided with a motor chamber for mounting a motor, the motor is connected to the mounting seat by an electric wire and has a shaft having a gear meshing with a gear which is located at a central portion of two helical brushes to drive the helical brushes to rotate, each of the helical brushes has an end provided with a bevel gear meshing with a bevel gear of another helical brush, so that the helical brushes at three sides of the triangular cleaning portion are rotated inwardly and simultaneously, each of the helical brushes has brush portions arranged in a helical manner, each of the brush portions of the respective helical brush has multiple bristles and has a length reaching the ground, each of the three sides of the triangular cleaning portion is provided with an end brush that is rotated with the helical brushes simultaneously, the end brush has six brush portions arranged in a S-shaped manner to convey trash at a corner inwardly, the cover is mounted on the main base, the main base is mounted on the dust collector, the dust collector encompasses the brush portions, the dust collector has a peripheral wall formed with a ramp having a bottom formed with a scraper to introduce the trash into the dust collector, the main base has a downward vertical wall to conduct the direction of the trash so that the trash is pushed into the dust collector smoothly without being disturbed by the perturbation produced by rotation of the brush portions.

2. The motorized broom in accordance with claim 1, wherein the handle has and includes multiple sub-handles, wherein one sub-handle has an end provided with a stepped hole, a screw bore and multiple protruding teeth, and another adjacent sub-handle has an end provided with a stepped post inserted into the stepped hole, an outer thread screwed into the screw bore and multiple serrated grooves engaged with the protruding teeth, so that the sub-handles of the handle are combined with each other.

3. The motorized broom in accordance with claim 1, wherein the shank portion has an upper end provided with an insert formed with at least one insertion hole, a limit slot and a flexible positioning plate having a positioning boss, and the handle has a lower end provided with a mounting portion mounted on the insert to form an electrical connection and formed with at least one plug inserted into the insertion hole, a protruding strip limited in the limit slot and a positioning hole to allow passage of the positioning boss so that the handle is positioned on the shank portion.

4. The motorized broom in accordance with claim 1, wherein the gear is integrally formed with an axle having two ends each formed with a flat insert inserted into a flat recess formed in one end of each of the helical brushes so that each of the helical brushes is rotated with the gear.

5. The motorized broom in accordance with claim 1, wherein the main base has a plurality of post holes and two slots, the dust collector has a plurality of posts inserted into the post holes and two elastic plates snapped into the slots so that the dust collector is mounted on the main base closely, and each of the elastic plates has a tapered wedge block extended through the slots and elastically retracted into the slots to snap the dust collector onto the main base.

6. The motorized broom in accordance with claim 1, wherein the main base has a plurality of positioning holes and a plurality of slidable locking members, and the cover has a plurality of downward extended columns inserted into the positioning holes and a plurality of depressions snapped onto the locking members.

7. The motorized broom in accordance with claim 1, wherein the main base has windows to facilitate a user inspecting the inside of the dust collector.

8. The motorized broom in accordance with claim 1, wherein the main base has triangular corners each formed with a box for mounting the bevel gear and the helical brushes, a spherical support is mounted on the box rested on the ground, so that the scraper and the brush portions are spaced from the ground.

9. The motorized broom in accordance with claim 8, wherein each of the helical brushes is provided with a dustproof ring mounted on the connection between the box and the respective helical brush.

10. The motorized broom in accordance with claim 8, wherein the spherical support has an inside formed with a conical reduced hole, and the box has two outwardly extended elastic plates inserted into the conical reduced hole, so that the spherical support is mounted on the box closely.

11. The motorized broom in accordance with claim 1, wherein the cover has a bottom formed with a plurality of openings spaced from the ground to facilitate the trash entering the helical brushes.