CN2263010Y

CN2263010Y - Charging dust-absorption blackboard eraser

Info

Publication number: CN2263010Y
Application number: CN 96203151
Authority: CN
Inventors: 田路平
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-01-24
Filing date: 1996-01-24
Publication date: 1997-09-24
Anticipated expiration: 2006-01-24

Abstract

The utility model relates to a charging dust-absorption blackboard eraser. The utility model is composed of a casing, brush bristle, a brush bristle seat, a dust filtering device, a motor, a blade, a charging battery, etc. The middle of the brush bristle is provided with a dust-absorption hole, and the brush bristle seat corresponding to the dust-absorption hole is provided with an opening communicated with a dust chamber. Dust is absorbed in the dust-absorption chamber through the dust-absorption hole when the dust is erased to leave a blackboard during operation, the dust is filtered by the dust filtering device and is detained in the dust-absorption chamber, and clean air is exhausted from a tail part. The utility model has the advantages of less dust scatter because no dust is accumulated on the brush bristle, good dust-absorption effect, reiterative charging and convenient use. The utility model is suitable for teaching.

Description

Rechargeable dust absorption blackboard eraser

The utility model belongs to the realia blackboard eraser, specifically a kind of dust absorption blackboard eraser.

But also there is not to find the blackboard eraser of dust suction in the market.Patent " protect strong blackboard brush " (patent No.: 94231041.1) but a kind of dust absorption blackboard eraser is disclosed, it is made up of housing, bristle, hair brush base, dust gathering arrester, dust-absorbing flue, dedusting portion, motor-blower fan, dust gathering arrester with bristle rings around wherein, bristle is fixed on the hair brush base, on the hair brush base around the bristle, establish suction port, communicate by the blast pipe of dust-absorbing flue with dedusting portion, one end of dedusting portion is mounted with motor-blower fan, the other end is by the sealing of falling the hawk, and diffusing air port is located on the motor tail end housing.During work, need inlet scoop with blower fan towards ground, dust enters dedusting portion with air-flow along the blast pipe tangent line, obtains rotation downwards, utilizes centrifugal force to capture dust, and pure air is overflowed by diffusing air port, and use is inconvenience; Because the bend of dust-absorbing flue, blast pipe is more, has reduced pick-up performance.Also mention before the inlet scoop of motor-blower fan in this specification and install filter mesh layer additional, dust directly enters dedusting portion with air-flow by dust-absorbing flue, air inlet, filters through filter mesh layer, and clean air is discharged by diffusing air port, and dust then stagnates in dedusting portion.There are the many shortcomings of bend equally in this scheme, the long-pending restriction of factor receptor, and the filter mesh layer area is limited, makes pick-up performance influenced.

Be with dust gathering arrester around the above-mentioned bristle that protects strong blackboard brush, purpose is to prevent that dust from escaping, yet when erasing the board, must exert oneself bristle is adjacent to blackboard, otherwise be difficult to clean, therefore, the bristle end face must be compressed, if the cover mouth of dust gathering arrester and bristle end face distance are too small, must make bristle can not be adjacent to blackboard, and the cover mouth of dust gathering arrester also can draw together dust and become scattered about in the air, simultaneously because the wearing and tearing of bristle, it is frequent that bristle will be changed, and causes waste; If the cover mouth is excessive with the distance of bristle end face, dust is scattered and contaminated air by the cover mouth.

The purpose of this utility model is to provide a kind of pick-up performance good, easy to use dust absorption blackboard eraser.

The utility model is achieved in that it is made up of housing, bristle, hair brush base, dirt catcher, motor, fan blade, enclosure interior is divided into dust suction chamber and aspirating chamber, the lower end of dust suction chamber seals with hair brush base, bristle is fixed on the hair brush base, the centre of bristle has the gap becomes air suction opening, and has the suction port that communicates with dust suction chamber on the corresponding hair brush base of air suction opening; Dirt catcher is housed in the dust suction chamber, and dirt catcher is an end opening, is with the container of the fixed in shape of filter mesh layer all around; Dust suction chamber communicates with aspirating chamber with the opening of dirt catcher, and motor, fan blade are contained in the aspirating chamber, and fan blade is positioned at the openend of dirt catcher, and the gap of motor and housing is an exhausting duct, and the housing of aspirating chamber is provided with exhaust outlet.During work, connect power supply, fan blade is under the driving of motor, dust suction chamber is bled, because air suction opening is distributed in the middle of the bristle, bristle is wiped dust from the blackboard time, just is inhaled into dust suction chamber by air suction opening through suction port, filter through dirt catcher, clean air enters environment by exhausting duct through exhaust outlet, and dust is detained in the dust suction chamber, and work finishes, unload hair brush base, outwell dust and get final product.

The utility model also can be installed charger in housing, so both can remove the inconvenience of line from, can guarantee sufficient power supply again.

Because the utility model is distributed in air suction opening in the middle of the bristle, dust just is sucked away in blackboard in wiping, does not have dust to pile up on bristle, thereby seldom has dust to be scattered, simultaneously because bend is few, resistance is little, and the filter mesh layer area is big, and pick-up performance is good, during work not the recipient to restriction, also can remove connecting line from, therefore, use more convenient.

Fig. 1 is the rechargeable dust absorption blackboard eraser side view of the utility model.

Fig. 2 is the rechargeable dust absorption blackboard eraser part assembling drawing of the utility model.

Fig. 8 is that Fig. 2 A is to view.

Fig. 4 is the utility model charging circuit figure.

By Fig. 1,2 as can be known, housing 7 inside are divided into dust suction chamber 20 and aspirating chamber 12 two parts, the centre separates with dividing plate 11, its lower end is respectively with hair brush base 2 and lid 15 sealings, dirt catcher 6 is arranged in the dust suction chamber 20, dirt catcher is an end opening, be with the wedge shape container of filter cloth all around, it is the inlet scoop that opening is arranged on the dividing plate 11, the openend of the shape of opening and dirt catcher 6 matches, make dirt catcher to dismantle easily, bristle 1 embeds on hair brush base 2 bottoms, and as shown in Figure 3, the bristle central longitudinal is an air suction opening 3 to having two strip holes, with have suction port on the corresponding hair brush base of this air suction opening, the top of suction port is that the back side of hair brush base vertically is provided with the horn mouth 21 to sidewall opening.The inner walls of aspirating chamber and cover and be fixed with motor cabinet 14, three slice the strip thin slices that intermediate recess place shape with motor 17 match of this motor cabinet for vertically distributing, the gap of motor cabinet and motor is an exhausting duct, have exhaust outlet 13 on the other end housing of exhausting duct and the sidewall of lid, fan blade 8 also can place the inlet scoop before being fixed in the inlet scoop by 19 in motor.Hair brush base 2 and cover 15 top wall one step is arranged, the edge is higher than the outer in making, edge cooperates with housing 7 in it, can insert in the housing, the back side of hair brush base 2 is fixed with a pair of spring leaf 4, a pair of small lugs 8 is arranged in the inner walls corresponding position, hair brush base 2 engages with housing by spring leaf 4, hair brush base 2 is respectively equipped with cooperatively interact boss 5 and groove 16 with lid 15 its adjacent lateral walls, hair brush base together is fixed on the housing by spring leaf and boss and lid, in housing, also be provided with a seal box 19 in the dust suction chamber, in the seal box 19 charger be housed, as shown in Figure 4, charger is by transformer, commutation diode BG1, rechargeable battery is formed, rechargeable battery can be selected nickel-cadmium cell for use, and key switch K10 and charging indicator light BG2 are housed on the box upper shell, and sidewall is equipped with charging plug 9 or charging jack.

Claims

1, a kind of rechargeable dust absorption blackboard eraser, form by housing, bristle, hair brush base, dirt catcher, motor, fan blade, bristle is fixed on the hair brush base, has suction port on the hair brush base, has diffusing air port on the housing, its feature is divided into dust suction chamber and aspirating chamber two parts in enclosure interior, dirt catcher is housed in the dust suction chamber, and dirt catcher is an end opening, is with the figurate container of filter mesh layer all around, dust suction chamber communicates with aspirating chamber with the opening of dirt catcher, and the dust suction chamber lower end seals with hair brush base; The centre of bristle has the gap becomes air suction opening, described suction port be positioned at the corresponding hair brush base of air suction opening on; Motor is installed in the aspirating chamber, and fan blade is fixed on by motor before the opening of dirt catcher or in the opening; Diffusing air port is located on the motor afterbody housing.

2, according to claims 1 described blackboard eraser, it is characterized in that a seal box is arranged in the housing, charger is housed in the box, housing is provided with key switch and the jack or have charging plug of charging.

3, according to claims 1 or 2 described blackboard erasers, it is characterized in that described dirt catcher is a wedge shape, the bottom surface is parallel with hair brush base.

4, according to claims 3 described blackboard erasers, it is characterized in that having dividing plate to be separated by between described dust suction chamber and aspirating chamber, opening is arranged on the dividing plate, the shape of opening and the openend of dirt catcher match.Dirt catcher can be fixed on the dividing plate by its openend.

5, according to claims 4 described blackboard erasers, it is characterized in that the hair brush base back side is fixed with a pair of spring leaf, in the inner walls corresponding section a pair of projection is arranged, hair brush base can engage with housing by spring leaf.

6, according to claims 5 described blackboard erasers, there is lid the lower end that it is characterized in that aspirating chamber, on the top wall of lid and hair brush base a step is arranged, make in it along being higher than the outer, mate with housing on edge in it, can insert in the housing, be respectively equipped with cooperatively interact boss and groove on hair brush base and its adjacent lateral wall of lid.