CN209938149U - Compasses teaching aid convenient to fix for mathematics - Google Patents

Abstract

The utility model discloses a mathematics is with compasses teaching aid of being convenient for to fix, including main part, pivot, drawing line and chalk groove, the turning block is installed to the below of main part, and the outside of turning block is provided with the base, the lower surface of base inlays and has the sucking disc, the pivot sets up in the inside of main part, and the top of pivot is provided with the dwang, the surface winding of pivot has the drawing line, and the surface of drawing line is provided with the scale, the drawing line runs through in the centre of spacing hole, and the top of drawing line is provided with the fixed block, the top of fixed block is connected with the bolt, and the upper right side of fixed block is provided with the guide bar, the chalk groove sets up in the right side of drawing line, and the top in chalk groove is provided with the card strip. The device can be fixed on the blackboard through the sucking disc that sets up, can prevent that the initial point from fixing insecurely and taking place the skew, influencing normal teaching to the device is slim and graceful, and sucking disc suction is big, drops when can not causing the sucking disc to adsorb.

Description

Compasses teaching aid convenient to fix for mathematics

Technical Field

The utility model relates to a mathematics teaching aid technical field specifically is a mathematics is with compasses teaching aid of being convenient for to fix.

Background

The teaching aid learning aid is applied to teaching, has important effects on improving the practical ability and comprehension ability of students, is a complete scientific and technological media in the form of a real object aiming at propagating science and technology and educating people, and is an indispensable device. Specifically, the specimen or sample from nature is used, and the teaching aid can be divided into two types, namely demonstration and practice.

Unable fixed of initial point can appear in the compasses teaching aid in the market use to the compasses volume that uses is too big, is difficult to receive and release, and the scale of drawing the circle is inaccurate, and the scale can't be fixed and can take place the skew when drawing simultaneously, and the problem of the unable length of adjusting of chalk in the chalk groove, for this reason, we provide a mathematics with compasses teaching aid convenient to fix.

Disclosure of Invention

An object of the utility model is to provide a mathematics is with compasses teaching aid convenient to it is fixed to can appear the original point in the compasses teaching aid use that provides in solving above-mentioned background art unable fixedly, and the compasses volume that uses is too big, is difficult to receive and release, and the scale of drawing the circle is inaccurate, and the scale can't be fixed and can take place the skew when drawing simultaneously, and the unable problem of adjusting length of chalk in the chalk groove.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a mathematics is with compasses teaching aid of being convenient for to fix, includes main part, pivot, drawing line and chalk groove, the turning block is installed to the below of main part, and the outside of turning block is provided with the base, the lower surface of base inlays and has the sucking disc, the pivot sets up in the inside of main part, and the top of pivot is provided with the dwang, the surface winding of pivot has the drawing line, and the surface of drawing line is provided with the scale, the drawing line runs through in the centre in spacing hole, and the top of drawing line is provided with the fixed block, the top of fixed block is connected with the bolt, and the upper right side of fixed block is provided with the guide bar, the chalk groove sets up in the right side of drawing line, and the top in chalk groove is provided with the card strip, the top of card strip is connected with the pen capping, and the internally mounted of pen capping has.

Preferably, a rotating structure is formed between the main body and the base, and a sealing structure is formed between the sucker and the base.

Preferably, the pivot passes through the dwang and constitutes revolution mechanic between the drawing line, and one section of drawing line is pasted in the surface of pivot.

Preferably, the scale is embedded on the outer surface of the drawing line, and a communicating structure is formed between the drawing line and the limiting hole.

Preferably, the guide rod and the bolt are mutually matched in size to form a sliding structure, and the fixing block and the drawing line form a clamping structure.

Preferably, the pen slot cover and the chalk slot form a clamping structure, and the pen slot cover and the adjusting rod are connected in a threaded manner.

Compared with the prior art, the beneficial effects of the utility model are that:

the device can be fixed on a blackboard through the arranged sucking disc, so that the phenomenon that the original point is insecure to be fixed and offset to influence normal teaching can be prevented, the device is light, the sucking force of the sucking disc is large, and the sucking disc cannot fall off when being adsorbed;

the drawing line can be collected by a teacher conveniently by rotating the rotating rod, the device is small in size and convenient for the teacher to carry, the length of the drawing line can be increased at will, circles which cannot be drawn by ordinary compasses can be drawn, the radius of a designated circle can be measured and drawn by the teacher conveniently through the installed scales, the most accurate circle can be conveniently observed by students, and the teaching quality is improved;

the bolt through the installation drives the fixed block and will draw the line fixedly, can prevent that the in-process of drawing from pulling out the line, influences normal drawing to the guided way of installation can prevent that the fixed block from taking place the skew, influences mr normal use, through the regulation pole of installation, can adjust suitable length with the chalk of chalk inslot, chalk overlength and fracture when preventing to draw, influence the effect that mr drawn, and can waste the cost, improve work efficiency simultaneously greatly.

Drawings

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

FIG. 2 is a right side view of the structure of the present invention;

fig. 3 is a schematic view of a partial structure at a in fig. 1 according to the present invention.

In the figure: 1. a main body; 2. rotating the block; 3. a base; 4. a suction cup; 5. a rotating shaft; 6. rotating the rod; 7. drawing a line; 8. calibration; 9. a limiting hole; 10. a fixed block; 11. a bolt; 12. a guide bar; 13. a chalk groove; 14. clamping the strip; 15. a pen slot cover; 16. and adjusting the rod.

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.

Referring to fig. 1-3, the present invention provides a technical solution: a compasses teaching aid convenient to fix for mathematics comprises a main body 1, a rotating block 2, a base 3, a sucker 4, a rotating shaft 5, a rotating rod 6, a drawing line 7, scales 8, a limiting hole 9, a fixing block 10, a bolt 11, a guide rod 12, a chalk groove 13, a clamping strip 14, a pen groove cover 15 and an adjusting rod 16, wherein the rotating block 2 is installed below the main body 1, the base 3 is arranged on the outer side of the rotating block 2, the sucker 4 is embedded on the lower surface of the base 3, a rotating structure is formed between the main body 1 and the base 3, a sealing structure is formed between the sucker 4 and the base 3, and the device can be fixed on a blackboard through the arranged sucker 4, so that the phenomenon that the original point is insecure and deviates to influence normal teaching can be prevented, the device is light, the suction force of the sucker 4 is large, and the device cannot fall off;

the rotating shaft 5 is arranged in the main body 1, the top end of the rotating shaft 5 is provided with a rotating rod 6, the outer surface of the rotating shaft 5 is wound with a drawing line 7, the outer surface of the drawing line 7 is provided with scales 8, the rotating shaft 5 forms a rotating structure with the drawing line 7 through the rotating rod 6, one section of the drawing line 7 is pasted on the outer surface of the rotating shaft 5, the drawing line 7 can be collected and released on the rotating shaft 5 through rotating the rotating rod 6, the drawing line 7 is convenient for a teacher to collect, the size of the device is reduced, the device is convenient for the teacher to carry, the length of the drawing line 7 can be increased at will through arrangement, a circle which can not be drawn by a compass can be drawn, the drawing line 7 penetrates through the middle of the limiting hole 9, a fixing block 10 is arranged above the drawing line 7, the scales 8 are inlaid on the outer surface of the drawing line 7, a communicating structure is formed between the drawing line 7 and the limiting hole 9, and the installed scales 8 are, the most accurate circle can be conveniently observed by students, and the teaching quality is improved;

the upper part of the fixed block 10 is connected with a bolt 11, the right upper part of the fixed block 10 is provided with a guide rod 12, the guide rod 12 and the bolt 11 are mutually matched in size to form a sliding structure, the fixed block 10 and the drawing line 7 form a clamping structure, the fixed block 10 is driven by the installed bolt 11 to fix the drawing line 7, the drawing line 7 can be prevented from being pulled out in the drawing process, the normal drawing is influenced, the installed guide rod 12 can prevent the fixed block 10 from deviating and influencing the normal use of teachers, the chalk groove 13 is arranged on the right side of the drawing line 7, a clamping strip 14 is arranged above the chalk groove 13, a chalk groove cover 15 is connected above the clamping strip 14, an adjusting rod 16 is arranged inside the chalk groove cover 15, the chalk groove cover 15 and the chalk groove 13 form a clamping structure, the connection mode between the chalk groove cover 15 and the adjusting rod 16 is a threaded connection mode, and through the installed adjusting rod 16, the chalk in the chalk groove 13 can be adjusted to be proper in length, the effect of teacher drawing is influenced by too long and broken chalk during drawing is prevented, cost can be wasted, and meanwhile work efficiency is greatly improved.

The working principle is as follows: for the compasses teaching aid, before the compasses teaching aid is used, a teacher needs to know that the suction cup 4 with the BTE-502 can fix the device on a blackboard, the deviation caused by the insecure fixation of an original point can be prevented, the main body 1 can rotate on the base 3 through the rotating block 2, the drawing line 7 can be collected and placed on the rotating shaft 5 through the rotating rod 6, the volume of the device is reduced, the device is convenient for the teacher to carry, the length of the set drawing line 7 can be increased at will, circles which cannot be drawn by ordinary compasses can be drawn, the installed scale 8 is convenient for the teacher to measure and draw the radius of a designated circle, and a student can observe the most accurate circle conveniently, when the compasses teaching aid is used, the teacher firstly pulls the clamping strip 14 below the chalk groove cover 15 out of the chalk groove 13, then puts a prepared chalk into the chalk groove 13, then clamps the clamping strip 14 with the chalk groove 13, and then screws the adjusting rod 16, adjust suitable length with the chalk, chalk overlength and fracture when preventing to draw, influence the effect that the mr drawn, the mr selects the appointed initial point from the blackboard afterwards, clear up sucking disc 4's surface again, it leads to fixed insecure to prevent the dust from appearing, then adsorb sucking disc 4 on the initial point, the mr pulls out chalk groove 13 right afterwards, suitable length is selected according to scale 8 on the drawing line 7 again, then screw bolt 11, then fixed block 10 through the inboard setting of spacing hole 9 can be fixed with drawing line 7, prevent that the in-process of drawing from pulling out drawing line 7, influence normal drawing, and guide bar 12 of installation can prevent that fixed block 10 from taking place the skew, influence the mr normal use, make the practicality of whole compasses teaching aid obtain fine improvement, just so accomplish the use of whole compasses teaching aid.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides a mathematics is with compasses teaching aid convenient to it is fixed, includes main part (1), pivot (5), drawing line (7) and chalk groove (13), its characterized in that: the chalk box is characterized in that a rotating block (2) is installed below the main body (1), a base (3) is arranged on the outer side of the rotating block (2), a sucker (4) is inlaid on the lower surface of the base (3), a rotating shaft (5) is arranged inside the main body (1), a rotating rod (6) is arranged at the top end of the rotating shaft (5), a drawing line (7) is wound on the outer surface of the rotating shaft (5), scales (8) are arranged on the outer surface of the drawing line (7), the drawing line (7) penetrates through the middle of a limiting hole (9), a fixing block (10) is arranged above the drawing line (7), a bolt (11) is connected above the fixing block (10), a guide rod (12) is arranged above the right of the fixing block (10), a chalk groove (13) is arranged on the right side of the drawing line (7), and a clamping strip (14) is arranged above the chalk groove (13), the upper portion of the clamping strip (14) is connected with a pen slot cover (15), and an adjusting rod (16) is installed inside the pen slot cover (15).

2. The compasses teaching aid convenient to it is fixed to mathematics according to claim 1, characterized by: a rotating structure is formed between the main body (1) and the base (3), and a sealing structure is formed between the sucker (4) and the base (3).

3. The compasses teaching aid convenient to it is fixed to mathematics according to claim 1, characterized by: pivot (5) pass through dwang (6) and draw and constitute revolution mechanic between line (7), and draw one section of line (7) and paste in the surface of pivot (5).

4. The compasses teaching aid convenient to it is fixed to mathematics according to claim 1, characterized by: the scale (8) is embedded on the outer surface of the drawing line (7), and a communicating structure is formed between the drawing line (7) and the limiting hole (9).

5. The compasses teaching aid convenient to it is fixed to mathematics according to claim 1, characterized by: the guide rod (12) and the bolt (11) are mutually matched in size to form a sliding structure, and a clamping structure is formed between the fixing block (10) and the drawing line (7).

6. The compasses teaching aid convenient to it is fixed to mathematics according to claim 1, characterized by: the pen groove cover (15) and the chalk groove (13) form a clamping structure, and the pen groove cover (15) is in threaded connection with the adjusting rod (16).

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