CN210553794U

CN210553794U - Laser chalk

Info

Publication number: CN210553794U
Application number: CN201920606764.3U
Authority: CN
Inventors: 钟晓锴
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-04-29
Filing date: 2019-04-29
Publication date: 2020-05-19
Anticipated expiration: 2029-04-29

Abstract

The utility model discloses a laser chalk, including fixed pipe, the pipe is taken out to having cup jointed in the fixed pipe, fixed intraductal chalk clamping piece that is equipped with, the chalk clamping piece is the hard material of deformability, the chalk clamping piece is hollow tubular structure, the bottom of chalk clamping piece has the breach, the bottom fixed mounting of chalk clamping piece has two fixture blocks, the breach has between the fixture block, two set up relatively between the fixture block, fixed pipe with fixedly connected with rubber mat between the chalk clamping piece, the rubber mat is half cylinder solid construction, the top of fixed pipe is equipped with laser emission device. This laser chalk, the structure sets up rationally, can use laser to guide student's reading blackboard writing, can not use hand direct contact loading and unloading chalk for the teacher is difficult for being stained with the ash on hand, and is better to the fixed effect of chalk, can satisfy people's user demand.

Description

Laser chalk

Technical Field

The utility model belongs to the technical field of teaching equipment, concretely relates to laser chalk.

Background

Chalks are widely used in daily life and are generally used for writing on blackboards. Ancient chalks are usually made of natural chalk, but nowadays they are frequently replaced by other substances. The chalk is made of hydrate of calcium sulfate (commonly called gypsum). Various pigments can also be added to make colored chalk. During the production process, the gypsum is heated to a certain temperature, so that the gypsum is partially dehydrated to form plaster, then the plaster is added with water and stirred into paste, and the paste is poured into a model for solidification. The chalk is a white precipitate of calcium sulfate, which is not easily decomposed and has larger particles than dust. The chalk mainly comprises two types of common chalk and dust-free chalk, and the main components of the chalk are calcium carbonate (limestone) and calcium sulfate (gypsum) or contain a small amount of calcium oxide.

The teacher often can use the laser lamp to shine the word on the blackboard, guide students to read the blackboard writing, use the chalk to write the blackboard writing after the teacher, often have a lot of chalk dust on hand, bring inconvenience to taking laser pen or other article afterwards, current chalk anchor clamps, though can reduce the way of being stained with the ash on hand, but still can make when loading and unloading the chalk be stained with the chalk ash on hand, bring inconvenience for the teaching, and current chalk anchor clamps often are not firm enough to the centre gripping of chalk.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a laser chalk to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a laser chalk comprises a fixing pipe, wherein the fixing pipe is of a semi-circular tubular hollow structure, a folding and unfolding pipe is sleeved in the fixing pipe, the folding and unfolding pipe is of a quarter-circular tubular hollow structure and is provided with two groups, the length of the folding and unfolding pipe is the same as that of the fixing pipe, chalk clamping pieces are arranged in the fixing pipe and are made of deformable hard materials, the chalk clamping pieces are of a hollow tubular structure, a notch is formed in the bottom of each chalk clamping piece, two clamping blocks are fixedly mounted at the bottom of each chalk clamping piece, a notch is formed between the two clamping blocks, the clamping blocks are arranged oppositely, the bottom surfaces of the clamping blocks are inclined, one side, close to the notch, of each clamping block is higher than the side, far away from the notch, of each clamping block, a rubber pad is fixedly connected between the fixing pipe and the chalk clamping pieces, and the rubber pad is of a, and the top of the fixed tube is provided with a laser emitting device.

Preferably, the fixed intraductal three hornblocks that are equipped with, three hornblocks set up the bottom of fixed pipe, three hornblocks with rubber mat fixed connection, three hornblocks's length with the length of rubber mat is the same, two the contact department of taking in and out the pipe is equipped with magnet, suction has between the magnet.

Preferably, the outside of fixed pipe is equipped with two spouts, the spout perpendicular to fixed pipe sets up, the both sides of fixed pipe respectively are equipped with one, be equipped with the slider on the spout, the slider with exhibition pipe fixed connection.

Preferably, the outside fixedly connected with telescopic sleeve rod of chalk clamping piece, the front end sleeve rod diameter of telescopic sleeve rod is less than the internal diameter of chalk clamping piece, the right side of telescopic sleeve rod is equipped with the pivot, the right side of pivot is equipped with the handle.

Preferably, the laser emission device includes the laser pen shell, the laser pen shell with the top fixed connection of fixed pipe, the inside of laser pen shell is equipped with the laser pen of horizontal direction, the top of laser pen is equipped with the switch, the switch runs through the top of laser pen shell, the right-hand member of switch is equipped with the battery door, the battery door runs through the top of laser pen shell, the front end of laser pen is equipped with the laser lamp.

The utility model discloses a technological effect and advantage: this laser chalk, through set up laser emission device on fixed pipe, make the chalk have the function of laser pen, the teacher of being convenient for guides students to read the blackboard writing, through set up the fixture block on the chalk clip, make the chalk clip can be with placing the chalk direct clamp on the desktop when using and get, need not use the hand contact chalk, make teacher's difficult being stained with the chalk dust, convenient teaching, through setting up three hornblocks, make the chalk clip more firm to the chalk centre gripping, this laser chalk, the structure sets up rationally, can use laser to guide student to read the blackboard writing, can not use hand direct contact loading and unloading chalk, make teacher's difficult being stained with the ash on hand, fixed effect to the chalk is better, can satisfy people's user demand.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a side view of the present invention;

fig. 3 is a side sectional view of the present invention;

fig. 4 is a front sectional view of the present invention.

In the figure: the device comprises a fixing tube 1, a folding and unfolding tube 2, a chalk clamping piece 3, a clamping block 4, a rubber pad 5, a triangular block 6, a magnet 7, a sliding groove 8, a sliding block 9, a laser emitting device 10, a rotating shaft 11, a handle 12, a telescopic loop bar 13, a laser pen shell 14, a laser pen 15, a switch 16, a battery door 17 and a laser lamp 18.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides a laser chalk as shown in figures 1-4, which comprises a fixed tube 1, wherein the fixed tube 1 is a semi-circular tubular hollow structure, a folding and unfolding tube 2 is sleeved in the fixed tube 1, the folding and unfolding tube 2 is a quarter-circular tubular hollow structure and is provided with two groups, the length of the folding and unfolding tube 2 is the same as that of the fixed tube 1, a chalk clip 3 is arranged in the fixed tube 1, the chalk clip 3 is made of deformable hard material, the chalk clip 3 is made of hollow tubular structure, the bottom of the chalk clip 3 is provided with a notch, two clamping blocks 4 are fixedly arranged at the bottom of the chalk clip 3, a notch is arranged between the clamping blocks 4, the bottom surface of the clamping block 4 is provided with inclination, one side of the clamping block 4 close to the notch is higher than the side of the clamping block 4 far away from the notch, the notch at the bottom of the clamping block 4 is aligned and pressed down, the chalk is impressed in chalk clip 3, has reached the function that need not hand direct contact chalk loading and unloading, fixed pipe 1 with fixedly connected with rubber pad 5 between the chalk clip 3, rubber pad 5 is half cylindrical solid construction, the top of fixed pipe 1 is equipped with laser emission device 10.

Concretely, be equipped with three hornblocks 6 in the fixed pipe 1, three hornblocks 6 set up the bottom of fixed pipe 1, three hornblocks 6 with 5 fixed connection of rubber pad, three hornblocks 6's length with the length of rubber pad 5 is the same, and the receipts of expansion pipe 2 oppresses three hornblocks 6 for rubber pad 5 is more firm to the pressure increase of chalk clamping piece 3, two to the centre gripping of chalk, the contact department of receipts expansion pipe 2 is equipped with magnet 7, have suction between the magnet 7, it is more firm when making receipts expansion pipe 2 expand.

Specifically, the outside of fixed pipe 1 is equipped with two spout 8, spout 8 perpendicular to fixed pipe 1 sets up, the both sides of fixed pipe 1 respectively are equipped with one, be equipped with slider 9 on the spout 8, slider 9 with the receipts exhibition pipe 2 fixed connection, the receipts exhibition of receipts exhibition pipe 2 is being controlled to slider 9.

Specifically, the outside fixedly connected with telescopic sleeve rod 13 of chalk clip piece 3, the front end sleeve rod diameter of telescopic sleeve rod 13 is less than the internal diameter of chalk clip piece 3, the right side of telescopic sleeve rod 13 is equipped with pivot 11, the right side of pivot 11 is equipped with handle 12, and the rotation of handle 12 drives pivot 11 and rotates for telescopic sleeve rod 13 is flexible.

Specifically, laser emission device 10 includes laser pen shell 14, laser pen shell 14 with the top fixed connection of fixed pipe 1, the inside of laser pen shell 14 is equipped with the laser pen 15 of horizontal direction, the top of laser pen 15 is equipped with switch 16, switch 16 runs through the top of laser pen shell 14, switch 16's right-hand member is equipped with battery door 17, battery door 17 runs through the top of laser pen shell 14, the front end of laser pen 15 is equipped with laser lamp 18, and the mr can use laser to guide the student to read.

Specifically, when the laser chalk is used, the folding and unfolding pipe 2 is folded, the notch at the bottom of the clamping block 4 is aligned with the chalk and pressed down, the chalk is pressed into the chalk clamping piece 3, the function of loading and unloading the chalk without directly contacting the chalk by hands is achieved, a teacher is not easy to be stained with dust by hands, after the chalk is loaded into the chalk clamping piece 3, the folding and unfolding pipe 2 is unfolded, the fixing pipe 1 and the folding and unfolding pipe 2 jointly form a cylinder, the unfolded folding and unfolding pipe 2 compresses the triangular block 6, the pressure of the rubber pad 5 on the chalk clamping piece 3 is increased, the chalk is clamped more stably, after the chalk is shortened, the rotating handle 12 is rotated to drive the rotating shaft 11 to rotate, the telescopic sleeve rod 13 stretches out and stretches out the chalk, the switch 16 is opened during teaching, the laser pen 15 emits laser, and students can use the laser to guide the chalk to read, the structure of the laser chalk is reasonable, and the laser can be used for guiding the students to, the chalk can be assembled and disassembled without direct contact of hands, so that a teacher is not easy to be stained with dust on hands, the chalk fixing effect is good, and the use requirements of people can be met.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. A laser chalk comprises a fixing tube (1), and is characterized in that: the chalk clip is characterized in that the fixed tube (1) is of a semicircular tubular hollow structure, the folding and unfolding tube (2) is sleeved in the fixed tube (1), the folding and unfolding tube (2) is of a quarter-circular tubular hollow structure and is provided with two groups, the length of the folding and unfolding tube (2) is the same as that of the fixed tube (1), a chalk clip (3) is arranged in the fixed tube (1), the chalk clip (3) is made of deformable hard material, the chalk clip (3) is of a hollow tubular structure, a notch is formed in the bottom of the chalk clip (3), two clamping blocks (4) are fixedly installed at the bottom of the chalk clip (3), a notch is formed between the clamping blocks (4), the two clamping blocks (4) are arranged oppositely, the bottom surface of each clamping block (4) has inclination, one side of each clamping block (4) close to the notch is higher than one side of each clamping block (4) far away from the notch, the chalk clip is characterized in that a rubber pad (5) is fixedly connected between the fixing tube (1) and the chalk clip pieces (3), the rubber pad (5) is of a semi-cylindrical solid structure, and a laser emitting device (10) is arranged at the top of the fixing tube (1).

2. The laser chalk of claim 1, wherein: be equipped with three hornblocks (6) in fixed pipe (1), three hornblocks (6) set up the bottom of fixed pipe (1), three hornblocks (6) with rubber pad (5) fixed connection, the length of three hornblocks (6) with the length of rubber pad (5) is the same, two the contact department of taking up and expanding pipe (2) is equipped with magnet (7), suction has between magnet (7).

3. The laser chalk of claim 1, wherein: the outside of fixed pipe (1) is equipped with two spout (8), spout (8) perpendicular to fixed pipe (1) sets up, the both sides of fixed pipe (1) respectively are equipped with one, be equipped with slider (9) on spout (8), slider (9) with exhibition pipe (2) fixed connection.

4. The laser chalk of claim 1, wherein: the chalk clip is characterized in that a telescopic sleeve rod (13) is fixedly connected to the outer portion of the chalk clip piece (3), the diameter of the front end sleeve rod of the telescopic sleeve rod (13) is smaller than the inner diameter of the chalk clip piece (3), a rotating shaft (11) is arranged on the right side of the telescopic sleeve rod (13), and a handle (12) is arranged on the right side of the rotating shaft (11).

5. The laser chalk of claim 1, wherein: laser emission device (10) include laser pen shell (14), laser pen shell (14) with the top fixed connection of fixed pipe (1), the inside of laser pen shell (14) is equipped with laser pen (15) of horizontal direction, the top of laser pen (15) is equipped with switch (16), switch (16) run through the top of laser pen shell (14), the right-hand member of switch (16) is equipped with battery door (17), battery door (17) run through the top of laser pen shell (14), the front end of laser pen (15) is equipped with laser lamp (18).