CN205573428U - Full width blackboard eraser - Google Patents

Abstract

The utility model discloses a full-width blackboard eraser, which comprises replaceable wiper strips, adhesive strips, small holes in the frame, sliders, compression springs, studs, spherical handles, baffles, and movable buckles; one side of the wiper strips is an ordinary blackboard The rubbing material is in contact with the surface of the blackboard, and the other side is the material that is in contact with the adhesive strip, which is bonded to one side of the adhesive strip. The frame fits with the guide rails on the blackboard and can slide back and forth along the rails; the frame includes edges Ⅰ, side II, crossbeam, side I, side II, and crossbeam constitute a triangular frame, with small holes on the crossbeam, and a slider parallel to the crossbeam between side I and side II; the other side of the adhesive strip is fixed to the frame On the crossbeam of the frame; small holes are arranged on the crossbeam of the frame, the studs pass through the small holes in turn, and the slider is fixed on the crossbeam of the frame; one end of the stud is provided with a ball handle, and the stud is covered with a compression spring. The blackboard eraser described in the utility model can complete the blackboard wiping process after one round of horizontal movement, and has the characteristics of short time consumption, high efficiency, and environmental protection.

Description

A full width blackboard eraser

technical field

The utility model relates to a full-width blackboard eraser, which belongs to the technical field of daily necessities.

Background technique

At present, most schools use traditional blackboards. Even the multimedia teaching of universities requires blackboards as auxiliary teaching tools. The existing blackboard eraser is wiped by people holding the blackboard eraser. Due to the limitation, the speed is often slow, the efficiency is low, the corners and other places can hardly be wiped, and the effect of wiping the blackboard will vary from person to person, and during the process of wiping the blackboard, chalk dust permeates the entire front row, causing pollution to the environment, serious endanger the health of teachers and students. The microparticles of chalk dust have a strong ability to adsorb germs, and the composition of chalk is an alkaline substance. According to statistics, these alkaline substances are likely to cause inflammation and even more serious problems to the respiratory system, skin, ears, nose, throat and other parts of teachers and students. Aiming at the above-mentioned problems of the traditional blackboard eraser, a brand-new full-width blackboard eraser was invented. This full-width blackboard eraser can effectively wipe the blackboard in all directions, greatly improving the efficiency and ensuring the wiping effect at the same time. On the premise of ensuring the wiping effect and efficiency at the same time, it can also effectively prevent the flying of chalk dust and protect the environment and the health of teachers and students.

Contents of the invention

The utility model solves the problems of the traditional blackboard eraser, such as time-consuming and labor-intensive, poor effect, flying dust, etc., and provides a novel full-width blackboard eraser with clear structure and low cost. This new type of full-width blackboard eraser has a large wiping range, takes a short time to wipe the blackboard, has high efficiency, and can be reused many times, effectively reducing the flying of chalk dust.

The purpose of this utility model is to provide a full-width blackboard eraser, including a replaceable wipe strip 1, an adhesive strip 2, a frame 3, a small hole 4, a slider 5, a compression spring 6, a stud 7, a knob 8, and a baffle 9 , movable buckle 10; one side of wiping strip 1 is common blackboard eraser material, contacts with blackboard surface, and the other side is the material that joins with adhesive strip 2, is bonded together with one side of adhesive strip 2, frame 3 and The guide rails on the blackboard match up and down, and can slide back and forth along the rails; the frame 3 includes side I11, side II12, and crossbeam 13, and the side I11, side II12, and crossbeam 13 form a triangular frame. A slider 5 parallel to the beam 13 is arranged between the sides II 12; the other side of the bonding strip 2 is fixed on the beam 13 of the frame 3; the beam 13 of the frame 3 is provided with a small hole 4, and the studs 7 pass through the small hole in turn. The hole 4 and the slider 5 are fixed on the crossbeam 13 of the frame 3; one end of the stud 7 is provided with a spherical handle 8, and the stud 7 is covered with a compression spring 6.

Preferably, the side I11 and side II12 of the present invention are connected to the beam 13 through movable buckles.

Preferably, the viscosity of the interface between the adhesive strip 2 and the frame 3 described in the present invention is greater than the viscosity of the interface between the adhesive strip 2 and the wiping strip 1; when the wiping strip 1 is replaced like this, the adhesive strip will not follow drop.

Preferably, four baffles 9 are respectively arranged on the four corners of the blackboard of the present invention.

The principle of the utility model: both ends of the bottom edge of side I11 and side II12 are connected with the beam 13 of the frame 3 through movable buckles, and the pressure of the hypotenuse is given by rotating the spherical handle 8 to fix the structure. When the blackboard eraser is working , by rotating the spherical handle 8 to change the compression amount 6 of the compression spring to play the role of compression, with the wear and tear of the blackboard eraser, changing the compression amount 6 of the compression spring can no longer meet the demand, and the action of the movable buckle 10 is needed To adjust, when it is necessary to adjust the triangular structure, first unscrew the spherical handle 8, and manually move the bottom of side I11 and side II12 forward at the same time to form a new triangular frame and play a role in readjusting the structure; After replacing the new wiper, remove side I11 and side II12 manually and move them to the original position, then rotate the knob 8 to fix it; rotate the knob 8 to give the slider 5 a downward pressing force to squeeze the spring 6, and All contain the small hole that wants to match with spring through slide block 5 and crossbeam 13, realize the transmission of pressure and the effect of fixed position with stud 7.

The beneficial effects of the utility model:

(1) Through this invention, the comprehensive wiping of the blackboard eraser can be realized, avoiding the disadvantages that the dead corners of the traditional blackboard wiping method can hardly be wiped, and can save time and effort to realize the function of cleaning the blackboard; at the same time, it can ensure the wiping effect while also To ensure that chalk dust does not fly everywhere, it can also facilitate the recovery of chalk powder and achieve the effect of recycling.

(2) The full-width blackboard eraser described in the utility model moves the frame of the full-width blackboard eraser to the left under an appropriate pressure condition, and the blackboard can be wiped clean with one back and forth. Effective contact with the blackboard surface for perfect wiping results.

Description of drawings

Figure 1 is a schematic diagram of the overall structure of the utility model.

Fig. 2 is a left view of the utility model.

In the figure: 1-replaceable wiping strip; 2-bonding strip; 3-frame; 4-small hole; 5 slider; 6-compression spring; 7-screw; 8-knob handle; 9-baffle; 10 - Movable buckle, 11-side Ⅰ; 12-side Ⅱ; 13 beam.

detailed description

The utility model will be described in further detail below in conjunction with the accompanying drawings and specific embodiments, but the protection scope of the utility model is not limited to the content described.

Example 1

A full-width blackboard eraser described in this embodiment includes a replaceable wipe strip 1, an adhesive strip 2, a small hole 4 in a frame 3, a slider 5, a compression spring 6, a stud 7, a knob 8, a baffle plate 9, a movable Buckle 10; one side of the wipe strip 1 is a common blackboard eraser material, which is in contact with the blackboard surface, and the other side is a material connected with the adhesive strip 2, which is bonded together with one side of the adhesive strip 2, and the frame 3 is connected with the blackboard up and down. The guide rails match each other and can slide back and forth along the track; the frame 3 includes side I11, side II12, and crossbeam 13, and side I11, side II12, and crossbeam 13 form a triangular frame, and the crossbeam 13 is provided with small holes 4, side I11, and side II12 There is a slider 5 parallel to the beam 13 between them; the other side of the adhesive strip 2 is fixed on the beam 13 of the frame 3; the beam 13 of the frame 3 is provided with a small hole 4, and the studs 7 pass through the small hole 4 in turn , The slider 5 is fixed on the crossbeam 13 of the frame 3; one end of the stud 7 is provided with a spherical handle 8, and the stud 7 is covered with a compression spring 6; side I11 and side II12 are connected to the crossbeam 13 through movable buckles; bonding The stickiness of strip 2 and frame 3 joint surface is greater than the stickiness of sticky strip 2 and wipe strip 1 joint surface; When replacing wipe strip 1 like this, sticky strip can not follow and drop together; The four corners of described blackboard Four baffles 9 are respectively arranged on the top, and in order to prevent excessive force, the full-width blackboard eraser flies out of the track, as shown in Figures 1-2.

During the use of the blackboard eraser, the wear and tear of the wipe strip will inevitably occur; for this reason, the spring 6 is compressed by turning the knob 10 to compress the wipe strip, the small hole 4 and the slider 5 are used to fix the position of the spring, and the screw The column 7 is used to fix the amount of compression and at the same time fix the position of the spring, so as not to over-compress and fly out, so as to achieve a small range of adjustment of the fit between the blackboard eraser and the blackboard.

Generally speaking, when the blackboard eraser is used for a long time, the eraser is greatly worn, but it is not enough to be replaced. The triangle above the frame can be changed through the adjustment of the movable buckle 10, and then through the action of the spring 6 To transmit the pressure to the eraser, to achieve a wide range of adjustments to fit the blackboard eraser to the blackboard.

Example 2

A full-width blackboard eraser described in this embodiment includes a replaceable wipe strip 1, an adhesive strip 2, a small hole 4 in a frame 3, a slider 5, a compression spring 6, a stud 7, a knob 8, a baffle plate 9, a movable Buckle 10; one side of the wipe strip 1 is a common blackboard eraser material, which is in contact with the blackboard surface, and the other side is a material connected with the adhesive strip 2, which is bonded together with one side of the adhesive strip 2, and the frame 3 is connected with the blackboard up and down. The guide rails match each other and can slide back and forth along the track; the frame 3 includes side I11, side II12, and crossbeam 13, and side I11, side II12, and crossbeam 13 form a triangular frame, and the crossbeam 13 is provided with small holes 4, side I11, and side II12 There is a slider 5 parallel to the beam 13 between them; the other side of the adhesive strip 2 is fixed on the beam 13 of the frame 3; the beam 13 of the frame 3 is provided with a small hole 4, and the studs 7 pass through the small hole 4 in turn 1. The slider 5 is fixed on the beam 13 of the frame 3; one end of the stud 7 is provided with a spherical handle 8, and the stud 7 is covered with a compression spring 6.

Claims (4)

1. a full width blackboard eraser, it is characterised in that: include replaceable rub piece (1), bonding strip (2), framework (3) aperture (4), slide block (5), compression spring (6), stud (7), knob (8), baffle plate (9), movable button (10)；The one side of rub piece (1) is common blackboard eraser material, contacts with blackboard surface, and another side is the material connected with bonding strip (2), is bonded together with the one side of bonding strip (2), guide rail phase contract that framework (3) is upper and lower with blackboard and, can slidably reciprocate along track；Framework (3) includes limit I (11), limit II (12), crossbeam (13), limit I (11), limit II (12), crossbeam (13) triangle framework, crossbeam (13) is provided with aperture (4), is provided with the slide block (5) parallel with crossbeam (13) between limit I (11), limit II (12)；The another side of bonding strip (2) is fixed on the crossbeam (13) of framework (3)；The crossbeam (13) of framework (3) is provided with aperture (4), and stud (7) sequentially passes through aperture (4), slide block (5) is fixed on the crossbeam (13) of framework (3)；One end of stud (7) is provided with knob (8), and stud (7) is cased with compression spring (6).

Full width blackboard eraser the most according to claim 1, it is characterised in that: limit I (11), limit II (12) are connected with crossbeam (13) by movable button.

Full width blackboard eraser the most according to claim 1, it is characterised in that: bonding strip (2) is more than the viscosity with bonding strip (2) Yu rub piece (1) abutted surface with the viscosity of framework (3) abutted surface.

Full width blackboard eraser the most according to claim 1, it is characterised in that: it is respectively equipped with four pieces of baffle plates (9) on four angles of blackboard.