CN204622948U - A kind of Novel unpowered dust absorption blackboard eraser - Google Patents

Abstract

The utility model discloses a novel dust-absorbing blackboard eraser without power. The bottom surface of the spherical roller is even; the position corresponding to the spherical roller on the base is provided with a through hole for placing the spherical roller, and a fan is arranged in the through hole on the top surface of the base, and the spherical roller passes through the through hole The power transmission mechanism in the fan is connected to the drive shaft of the fan. The utility model does not need power input and can play a dust-absorbing effect only by its own movement, and saves energy on the basis of ensuring the dust-absorbing effect of the blackboard eraser.

Description

A new type of dust-absorbing blackboard eraser without power

technical field

The utility model belongs to the technical field of teaching aids, in particular to a blackboard eraser.

Background technique

The blackboard eraser is one of the indispensable teaching aids in the daily teaching process. The traditional blackboard eraser only has the function of wiping the blackboard and cannot absorb the dust particles generated during the blackboard wiping process. There are also blackboard erasers and chalk erasers with dust-absorbing effects on the market, such as: take a small-sized vacuum cleaner as the main body, install a hairbrush at the dust-absorbing port of the main body, and set the dust-absorbing chalk eraser of the dust-removing port on the top of the main body; Vacuum chalk erasers powered by electricity or solar energy, etc. Although these products have a certain dust-absorbing effect, they have the following defects: 1) The power of the chalk eraser requires an external energy source. Whether it is solar energy or electric energy, energy needs to be stored in advance to ensure the dust absorption of the chalk eraser during the blackboard erasing period. Effect; 2) Only the outlet of dust is provided, but no dust collection device is provided, so it is not really efficient to purify air particulate pollution.

Contents of the invention

The technical problem to be solved by the utility model is to provide a blackboard eraser that can absorb dust only by its own movement without power input, and save energy on the basis of ensuring the dust-absorbing effect of the blackboard eraser.

In order to solve the problems of the technologies described above, the technical solutions adopted by the utility model are as follows.

A new type of dust-absorbing blackboard eraser without power, comprising a base, a number of spherical rollers are evenly distributed on the bottom surface of the base, and other parts of the bottom surface of the base are provided with a wiping body, and the bottom surface of the wiping body is connected with the bottom surface of the spherical rollers. flush; the part of the base corresponding to the spherical roller is provided with a through hole for placing the spherical roller, and a fan is arranged in the through hole on the top surface of the base, and the spherical roller passes through the power transmission mechanism arranged in the through hole Connect the drive shaft of the fan.

The above-mentioned new type of dust-absorbing blackboard eraser without power, the power transmission mechanism includes a horizontal connecting rod radially arranged on the spherical roller, the outer end of the horizontal connecting rod is connected to the worm gear mechanism, and the A vertical link in the hole connects the fan's drive shaft.

The above-mentioned novel blackboard eraser with no power for vacuuming, the wiping body is a sponge or a brush.

In the above-mentioned novel blackboard eraser with no power for vacuuming, filter paper for sucking chalk dust is adhered to the wall of the through hole.

In the above-mentioned novel blackboard eraser for dust-absorbing without power, the filter paper is nano filter paper.

Due to the adoption of the above technical solutions, the technical progress achieved by the utility model is as follows.

During the use of the utility model, the rotation of the fan causes the air around the blackboard eraser to bring dust into the dust-absorbing blackboard eraser, which can reduce the pollution concentration of inhalable particles around the blackboard, and is beneficial to maintenance teachers and front-end workers. The health of the row students has a significant effect; moreover, the utility model does not require any energy input from the outside world, compared with the previous chalk eraser based on electric energy or solar energy, it saves energy and is more environmentally friendly.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a transverse sectional view of the wiping body part of the present invention;

Fig. 3 is a schematic structural diagram of the power transmission mechanism of the present invention.

Among them: 1. Base, 2. Spherical roller, 3. Through hole, 4. Fan, 5. Horizontal connecting rod, 6. Worm gear mechanism, 7. Vertical connecting rod, 8. Wiping body.

Detailed ways

In order to make the technical problems, technical solutions and beneficial effects to be solved by the utility model clearer, the utility model will be described in detail below in conjunction with the accompanying drawings and embodiments. It should be noted that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

A new type of dust-absorbing blackboard eraser without power comprises a base 1 and a wiping body 8, and the wiping body is fixedly arranged on the bottom surface of the base. In the utility model, the wiping body is a sponge or a brush.

A plurality of through holes 3 are arranged on the base, and a spherical roller 2 , a power transmission mechanism 6 and a fan 4 are arranged in the through holes. In this embodiment, a total of six through holes are provided, and the six through holes are evenly distributed on the base, as shown in FIG. 1 .

The wiping body is adhered to the bottom surface of the base without a through hole, and the spherical roller is located in the wiping body. As shown in Figure 2, the bottom surface of the wiping body is flush with the bottom surface of the spherical roller. Fan 4 is positioned at the top of base through hole, is connected by power transmission mechanism between fan and spherical roller.

The power transmission mechanism includes a horizontal connecting rod 5, a worm gear mechanism 6 and a vertical connecting rod 7. The horizontal connecting rod 5 is arranged radially on the spherical roller. The outer end of the horizontal connecting rod 5 is connected to the worm gear mechanism 6. Connect the drive shaft of the fan 4 to the vertical connecting rod 7 arranged in the through hole, as shown in FIG. 3 .

Filter paper is also arranged on the wall of the through hole of the utility model for absorbing chalk dust. In the utility model, the filter paper adopts nanometer filter paper to ensure that the dust sucked into the chalk wiper is controlled inside the nanometer filter paper so as not to diffuse into the atmosphere outside the chalk wiper.

In the process of wiping the blackboard of the utility model, as the utility model moves back and forth, the wiping body wipes off the chalk dust from the blackboard, and at the same time drives the spherical roller to roll, and the spherical roller drives the horizontal connecting rod to move up and down, and the worm gear mechanism will The up-and-down movement of the horizontal link is converted into the rotation of the vertical link, thereby driving the fan above the vertical link to rotate. The fan rotates to make the air flow, and at the same time, pollute particles such as chalk dust are sucked into the blackboard eraser, and the filter paper is collected to prevent it from flowing out.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements and improvements made within the principles and spirit of the present utility model are all included in this utility model. within the scope of protection of utility models.

Claims (5)

1. A new type of dust-absorbing blackboard eraser without power, including a base (1), characterized in that: a number of spherical rollers (2) are evenly distributed on the bottom surface of the base, and other parts of the bottom surface of the base are provided with wipers. Body (8), the bottom surface of the wiping body is flush with the bottom surface of the spherical roller; the part of the base corresponding to the spherical roller is provided with a through hole (3) for placing the spherical roller (2), which is located on the top surface of the base A fan (4) is arranged in the through hole, and the spherical roller (2) is connected to the driving shaft of the fan (4) through a power transmission mechanism arranged in the through hole. 2. A new type of dust-absorbing blackboard eraser without power according to claim 1, characterized in that: the power transmission mechanism includes a horizontal connecting rod (5) arranged radially on the spherical roller, and the horizontal connecting rod (5) ) is connected to the worm gear mechanism (6), and the worm gear mechanism (6) is connected to the drive shaft of the fan (4) through the vertical connecting rod (7) axially arranged in the through hole. 3. A new type of dust-absorbing blackboard eraser without power according to claim 1, wherein the wiping body is a sponge or a brush. 4. A new type of dust-absorbing blackboard eraser without power according to any one of claims 1 to 3, characterized in that filter paper for sucking chalk dust is adhered to the wall of the through hole. 5. A new type of dust-absorbing blackboard eraser without power according to claim 4, characterized in that: the filter paper is nano filter paper.