CN206067319U

CN206067319U - A kind of scriber for blackboard

Info

Publication number: CN206067319U
Application number: CN201620481530.7U
Authority: CN
Inventors: 舒兴宝
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-05-25
Filing date: 2016-05-25
Publication date: 2017-04-05
Anticipated expiration: 2026-05-25

Abstract

This utility model is related to teaching aid technical field, in particular it relates to a kind of scriber for blackboard.The scriber can easily and accurately complete setting-out, while be not required to, by analog such as any chalks, both save resource, and realized the no pollution of environment again.The scriber is characterised by：Including carrier, magnetic piece, laser pen, set of cells, switch, wire and cover plate；Wherein, carrier is cylinder barrel shaped, bottom sealing, upper end open；Magnetic piece is fixed on carrier bottom；Laser pen is fixed on carrier bottom, and front end stretches out in carrier side wall；Set of cells is fixed on carrier bottom；Switch is fixed on carrier side-wall outer side；Laser pen, set of cells and switch are connected into closed-loop path by wire；Cover plate is circle, and upper end is provided with circular scale.The beneficial effects of the utility model are：The straight line of standard criterion can be quickly drawn on blackboard, is easy to efficient teaching；Meanwhile, cast out the use of chalk, saved resource, to zero environmental.

Description

A kind of scriber for blackboard

Technical field

This utility model is related to teaching aid technical field, in particular it relates to a kind of scriber for blackboard.

Background technology

In known technical field, during teachers' instruction, demonstration is frequently necessary on blackboard, so needing picture some straight lines And the straight line with certain angle.When existing chi tool is operated on blackboard, operation inconvenience determines the size of angle not Easily, reduce the efficiency of giving lessons in classroom.Additionally, the line drawing method adopted during classroom instruction is, using works such as ruler, set squares Tool, the setting-out on blackboard with chalk.Using the method, on the one hand, cumbersome, draw a secondary figure and generally require many times, wave Instructional blocks of time valuable on classroom is taken；On the other hand, marked using chalk, not only waste of resource, and blacked after class During plate, a large amount of chalk dusts can be produced and spread in classroom, pollute classroom environment, the more health to student and teacher brings damage Evil.

Utility model content

The technical problems to be solved in the utility model is to provide a kind of scriber for blackboard, and the scriber can be conveniently accurate Complete setting-out, while be not required to, by analog such as any chalks, both save resource, and realized the no pollution of environment again.

To solve the above problems, this utility model provides a scriber for blackboard, it is characterised in that：Including carrier, magnetic piece, Laser pen, set of cells, switch, wire and cover plate；The carrier is cylinder barrel shaped, bottom sealing, upper end open, for by each group Part is fixed and is closed, and circular design is able to convenient reading circular scale in addition；The magnetic piece is fixed on carrier inside In the sealing of bottom, for carrier is closely adhered on blackboard；The laser pen is fixed in the bottom sealing of carrier inside, And front end stretches out in carrier side-wall outer side, red light can be sent, rear end is placed in carrier inside；The set of cells is fixed on carrier In internal bottom sealing, for exporting electric energy to laser pen；The switch is fixed on carrier side-wall outer side, for connecing on-off Open laser pen loop；The wire is for connecting into closed-loop path by laser pen, set of cells and switch；The cover plate is circle, Its radius is equal to the circular radius in carrier upper end, and so that tight closure is on carrier, and upper end is provided with circular scale, 0 degree of quarter The straight line that degree line is located with laser pen overlaps, and the circumference number of degrees can be conveniently read in this design.

The beneficial effects of the utility model are：Simple structure, it is easy to use, standard criterion can be quickly drawn on blackboard Straight line, be easy to efficient teaching；Meanwhile, cast out the use of chalk, saved resource, reduced instruction cost, to environment zero Pollution.

Description of the drawings

Below in conjunction with the accompanying drawings specific embodiment of the present utility model is described in further detail, wherein：

Fig. 1 is exploded perspective view of the present utility model；

Fig. 2 is the use state figure of the first embodiment of the present utility model；

Fig. 3 is the use state figure of second embodiment of the present utility model；

Fig. 4 is the use state figure of the third embodiment of the present utility model；

Show 1 in figure for carrier, 2 is magnetic piece, and 3 is laser pen；4 is set of cells, and 5 are switch, and 6 is wire, and 7 is cover plate.

Specific embodiment

This utility model provides a kind of scriber for blackboard by improving, and can be practiced as follows：Including load Body 1, magnetic piece 2, laser pen 3, set of cells 4, switch 5, wire 6 and cover plate 7；The carrier 1 be cylinder barrel shaped, bottom sealing, on End opening；In the bottom sealing that the magnetic piece 2 is fixed on inside carrier 1；The bottom that the laser pen 3 is fixed on inside carrier 1 In sealing, and front end stretches out in 1 side-wall outer side of carrier, and rear end is placed in inside carrier 1；The set of cells 4 is fixed on inside carrier 1 Bottom sealing on；The switch 5 is fixed on 1 side-wall outer side of carrier；Laser pen 3, set of cells 4 and switch 5 are connected by the wire 6 It is connected into closed-loop path；The cover plate 7 is circle, and its radius is equal to the circular radius in 1 upper end of carrier, and upper end is provided with circumference quarter Degree, the straight line that 0 degree of graduation mark is located with laser pen 3 overlap.

Fig. 2 illustrates a kind of embodiment of the present utility model.As shown in Fig. 2 the first step, first arbitrarily determines 1 point of A, by picture Line device is placed on A points, opens switch 5, and now laser pen 3 projects red light, and direction is as shown by arrows, then true with ruler The length of length of side AB needed for fixed, that is, determine point B.Another scriber is placed on B points by second step, opens switch 5, now laser Pen 3 projects red light, 90 ° of angle needed for reading, that is, determine direction, then the length of length of side BC needed for being determined with ruler.Weight Multiple above step, you can complete the specification to rectangle ABCD and draw.

Fig. 3 illustrates two kinds of embodiments of the present utility model.As shown in figure 3, the first step, first arbitrarily determines 1 point of E, by picture Line device is placed on E points, opens switch 5, and now laser pen 3 projects red light, and direction is as shown by arrows, then true with ruler The length of length of side EF needed for fixed, that is, determine point F.Another scriber is placed on F points by second step, opens switch 5, now laser Pen 3 projects red light, 57.5 ° of angle needed for reading, that is, determine direction, then the length of length of side FG needed for being determined with ruler, Determine point G.Another scriber is placed on G points by the 3rd step, opens switch 5, and now laser pen 3 projects red light, light Line is projected to the cut-off of E points.Complete the specification to triangle EFG to draw by completing above step.

Fig. 4 illustrates three kinds of embodiments of the present utility model.As shown in figure 4, the first step, first arbitrarily determines 1 point of H, by picture Line device is placed on H points, opens switch 5, and now laser pen 3 projects red light, and direction is as shown by arrows.Second step, with directly Chi determines point I, the distance of point J and point K, separately takes three scribers and places I points, J points and K points respectively, opens switch 5, now swash Light pen 3 projects red light, and direction is as shown by arrows.Complete above step, you can the specification for completing four line lattice is drawn.

This utility model is made to explain above in conjunction with the drawings and specific embodiments.It should be noted that this Utility model is not limited to above-mentioned three kinds of embodiments.Various drafting methods in using geometry, it is possible to achieve different straight The drafting of line graph, such as sealene triangle, parallelogram.Additionally, without departing from this utility model design make it is various Change, still falls in protection domain of the present utility model.

Claims

1. a kind of scriber for blackboard, it is characterised in that：Including carrier（1）, magnetic piece（2）, laser pen（3）, set of cells（4）, switch （5）, wire（6）And cover plate（7）；The carrier（1）For cylinder barrel shaped, bottom sealing, upper end open；The magnetic piece（2）It is fixed In carrier（1）In internal bottom sealing；The laser pen（3）It is fixed on carrier（1）In internal bottom sealing, and front end is stretched For carrier（1）Side-wall outer side, rear end are placed in carrier（1）It is internal；The set of cells（4）It is fixed on carrier（1）Internal bottom In sealing；The switch（5）It is fixed on carrier（1）Side-wall outer side；The wire（6）By laser pen（3）, set of cells（4）With open Close（5）Connect into closed-loop path；The cover plate（7）For circle, its radius is equal to carrier（1）The circular radius in upper end, and upper end It is provided with circular scale, 0 degree of graduation mark and laser pen（3）The straight line at place overlaps.