CN202720801U

CN202720801U - Polygonal demonstration teaching aid

Info

Publication number: CN202720801U
Application number: CN 201220049245
Authority: CN
Inventors: 胡书华
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-02-15
Filing date: 2012-02-15
Publication date: 2013-02-06
Anticipated expiration: 2022-02-15

Abstract

The utility model relates to a polygonal demonstration teaching aid, which comprises a plurality of scaled rulers and connecting pieces. The center of each ruler is provided with a through groove. A plurality of slide blocks are arranged in the through grooves. The center of each slide block is punched with a hole. The connecting pieces pass through the punched holes to fix the slide blocks onto any parts of the through grooves. During demonstration, connecting pieces and rulers can be disassembled or assembled according to needs and the plurality of rulers are connected and assembled together through the connecting pieces to form required patterns. The polygonal demonstration teaching aid is convenient to use. The teaching aid reduces the mapping workload of teachers and develops students' ability in thinking, associatively analogizing and observing. Due to the adoption of the teaching aid, the interest of students in learning geometry is motivated.

Description

A kind of polygon demonstration realia

Technical field

The utility model relates to the teaching aid of several teaching, particularly a kind of polygon demonstration realia.

Background technology

At present, in several teaching, teaching aid generally has ruler, set square etc., when the teaching drawing, draw own needed figure to one step of basic previous step that the teacher can only be online, drawing course is loaded down with trivial details and not directly perceived, the teacher should draw again and say, very busy, association, analogy, observation and the manipulative ability that simultaneously can not cultivate preferably the student will certainly affect the effect of several teaching.And itself there are many drawbacks in they: carry inconvenience, use also inconvenience, prior or function singleness.

On the other hand, existing how much teaching aids, although can the ocular demonstration geometric figure,, the figure that can demonstrate is fewer, and usable range is narrow.

The utility model content

Technical problem to be solved in the utility model is, a kind of polygon demonstration realia is provided, the polygon of often using in the time of can demonstrating several teaching intuitively and the figure of correlation theorem, and the geometric figure that can demonstrate is many, and is easy to use.

For solving the problems of the technologies described above, the utility model provides a kind of polygon demonstration realia, comprise some rulers and connector, in the middle of ruler, be provided with groove along its length direction, connector passes groove and can be free to slide in groove, ruler can rotate around connector, connector can be serially connected two and above ruler, some connectors can be connected into three and above ruler two ends the polygon of a closure, some slide blocks are installed in groove, be provided with perforation in the middle of the slide block, connector passes perforation and stretches out from the end face of ruler from the bottom surface of ruler, connector can freely rotate in perforation, and connector can be fixed on optional position in the groove to slide block, indicates along its length scale at the end face of ruler near its edge.

Further, be concaved with groove at groove respectively in ruler along the two sides of ruler length direction, the bottom surface of groove is vertical with the ruler end face and parallel with groove, is concaved with some vertical grooves in the bottom surface of groove in ruler; Be concaved with gathering sill near on the side of ruler bottom surface to ruler at groove, gathering sill is between groove and vertical groove.

Further, the cross section of vertical groove is in the shape of the letter V, and aligns with the scale of ruler end face in the summit of V font.

Further, slide block is installed in the space of groove and groove composition, and can in groove, be free to slide, convex with boss on slide block and the ruler end face end face in opposite directions, the height of boss is lower than ruler end face and its width less than the width of groove, convex shoulder is equipped with in the two sides of slide block in the groove of ruler, convex shoulder cooperates with trench gap and extends in the groove.

Further, be provided with guiding rib at convex shoulder with respect to the position male of gathering sill, guiding rib extends in the gathering sill and the gathering sill clearance fit, and can be free to slide in gathering sill, is concaved with mounting groove in the middle of the side of convex shoulder near trench bottom surfaces in convex shoulder.

Further, the decorative pearl on top of an official cap that spring and an end face are bulb is installed successively in mounting groove, the opening of mounting groove is less than the external diameter of the decorative pearl on top of an official cap, and the bulb of the decorative pearl on top of an official cap extended convex shoulder surface also terminates in the opening part of mounting groove.

Further, mounting groove is installed with Location resilient piece along the length direction setting of ruler in mounting groove, is provided with the projection with vertical groove clearance fit in the middle of Location resilient piece.

Further, connector comprises screw rod and nut, screw rod one end is provided with screw head, the end face of screw head is stained with skid-proof rubber, the external diameter of screw head and the external diameter of nut are greater than the width of groove, and screw rod passes perforation and freely rotates perforation from the ruler bottom surface, and nut can be attached to the end face of ruler, and be tightened on the screw rod, can be fixed on optional position in the groove to slide block.

Further, be concaved with some counterbores in the bottom surface of ruler, counterbore is arranged on the both ends near ruler, installs and bonding magnetic magnetite in the counterbore, and the end face of magnetite is stained with skid-proof rubber.

Compared with prior art, a kind of polygon demonstration realia of the present utility model comprises that some handles are with graduated ruler, be provided with groove in the middle of the ruler, be provided with some slide blocks in groove, be provided with perforation in the middle of the slide block, connector is by perforation and can be fixed on optional position in the groove to slide block.Can dismantle as required or assemble connector and ruler during demonstration, some rulers connect by connector and assembling forms needed figure, and are easy to use.

Description of drawings

Fig. 1 is the schematic appearance of a preferred embodiment of the present utility model;

Fig. 2 is the plane partial schematic sectional view of ruler the first embodiment among Fig. 1;

Fig. 3 is the diagrammatic cross-section of Fig. 2;

Fig. 4 is the schematic perspective view of slide block the first technical scheme among Fig. 2;

Fig. 5 is the plane partial schematic sectional view of ruler the second embodiment among Fig. 1;

Fig. 6 is the diagrammatic cross-section of Fig. 5;

Fig. 7 is the schematic perspective view of slide block the second technical scheme among Fig. 5;

Fig. 8 is the schematic perspective view of connector among Fig. 1;

Fig. 9 is the arbitrary triangle synoptic diagram of the utility model demonstration;

Figure 10 is the similar synoptic diagram of triangle of the utility model demonstration;

Figure 11 is the trapezoidal neutrality line synoptic diagram of the utility model demonstration;

Figure 12 is the diagonal line synoptic diagram of the rhombus of the utility model demonstration.

Embodiment

In order to make technical problem to be solved in the utility model, technical scheme and beneficial effect clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.

A preferred embodiment of the present utility model comprises ruler 1 and connector 2, please refer to Fig. 1.Be provided with groove 11 along its length direction in the middle of ruler 1, connector 2 passes groove 11 and can be free to slide in groove 11, and ruler 1 can rotate around connector 2.

Please together with reference to Fig. 2, it is the plane partial schematic sectional view of the first embodiment of the utility model ruler 1, some slide blocks 12 are installed in groove 11, be provided with perforation 121 in the middle of the slide block 12, connector 2 passes perforation 121 and stretches out from the end face 14 of ruler 1 from the bottom surface 13 of ruler 1, connector 2 can freely rotate in perforation 121, connector 2 can be fixed on optional position in the groove 11 to slide block 12, keeping to the side on ruler 1 surface indicates scale 15 along its length, and scale 15 is indicated on the end face 14 of ruler 1.The utility model comprises six rulers 1 and six cover connectors 2, every being provided with three slide blocks 12 in the ruler 1, connector 2 can be serially connected two and above ruler 1, some connectors 2 can be connected into three and above ruler 1 two ends the polygon of a closure, are assembled into to want the figure demonstrated.

Further, what slide block 12 in the present embodiment adopted is the first technical scheme, please together with reference to Fig. 3.Be concaved with groove 16 at groove 11 respectively in ruler 1 along the two sides of ruler 1 length direction, the bottom surface 17 of groove 16 is vertical and parallel with groove 11 with ruler 1 end face 14, is concaved with some vertical grooves 18 in the bottom surface 17 of groove 16 in ruler 1; Be concaved with gathering sill 19 near on the side of ruler 1 bottom surface 13 to ruler at groove 16, gathering sill 19 is between groove 11 and vertical groove 18.The cross section of vertical groove 18 is in the shape of the letter V, and aligns with the scale 15 of ruler 1 in the summit of V font.Slide block 12 is installed in the space of groove 16 and groove 11 compositions, and can in groove 16, be free to slide, convex with boss 122 on slide block 12 and ruler 1 end face 14 end face in opposite directions, the height of boss 122 is lower than ruler 1 end face 14 and its width less than the width of groove 11, convex shoulder 123 is equipped with in the two sides of slide block 12 in the groove 16 of ruler 1, convex shoulder 123 extends in the groove 16 with groove 16 clearance fit.Be provided with guiding rib 124 at convex shoulder 123 with respect to the position male of gathering sill 19, guiding rib 124 extends in the gathering sill 19 and gathering sill 19 clearance fit, and can in gathering sill 19, be free to slide, in the middle of the side of convex shoulder 123 near groove 16 bottom surfaces 17, in convex shoulder 123, be concaved with mounting groove 125.

Particularly, please referring to Fig. 4.The decorative pearl on top of an official cap 127 that spring 126 and an end face are bulb is installed successively, the extended convex shoulder of the bulb of the decorative pearl on top of an official cap 127 123 surfaces in mounting groove 125; When other position beyond the scale 15 of slide block 12 slips at ruler 1, the bulb of the decorative pearl on top of an official cap 127 is retracted in the mounting groove 125 after being pushed by groove 16 bottom surfaces 17, when slide block 12 slides scale 15 position at ruler 1, the decorative pearl on top of an official cap 127 is upspring under spring 126 pressure-actings and is resetted, and the bulb of the decorative pearl on top of an official cap 127 resets to stretch out and only be butted on and stands groove 18 surfaces.Slide block 12 is free to slide in groove 16, and when sliding into scale 15 position, the decorative pearl on top of an official cap 127 just resets and vertical groove 18 surfaces of conflicting in mounting groove 125, sends " click clatter " sound to point out.

Together referring to Fig. 5 to Fig. 7, be ruler the second embodiment of the present utility model please.Compare with the first embodiment, just the slide block 12 in the present embodiment ' structure different, other structure and the first embodiment are identical.In the present embodiment, slide block 12 ' employing the second technical scheme is compared with above-mentioned the first technical scheme, and just the structure at mounting groove 125 ' locate is different, and other structure is identical.

Slide block 12 ' be installed in the space of groove 16 and groove 11 compositions, and can in groove 16, be free to slide, slide block 12 ' two sides be equipped with in the groove 16 of ruler 1 convex shoulder 123 ', in the middle of convex shoulder 123 ' near the side of groove 16 bottom surfaces 17 to convex shoulder 123 ' in be concaved with mounting groove 125 '.Mounting groove 125 ' along the length direction setting of ruler 1, mounting groove 125 ' in be installed with Location resilient piece 126 ', be provided with in Location resilient piece 126 ' centre with the projection 127 of vertical groove 18 clearance fit '; When other position beyond the scale 15 of slide block 12 slips at ruler 1, projection 127 ' elastic deformation is occured by groove 16 bottom surfaces, 17 extruding, and recessed mounting groove 125 ' in, when slide block 12 slided scale 15 position at ruler 1, projection 127 ' upspringing resetted and only is butted on vertical groove 18 surfaces.

Please refer to Fig. 8, connector 2 comprises screw rod 21 and nut 22, screw rod 21 1 ends are provided with screw head 23, the external diameter of the external diameter of screw head 23 and nut 22 is greater than the width of groove 11, screw rod 21 passes perforation 121 and freely rotates perforation 121 from the bottom surface 13 of ruler 1, nut 22 can be tightened on from the end face 14 of ruler 1 on the screw rod 21, can be fixed on optional position in the groove 11 to slide block 12.In the present embodiment, nut 22 wing nut preferably.

For the ease of slide block 12 or 12 ' installation, be provided with in an end of ruler 1 opening 101 and with the cover plate 102 of its phase clearance fit, referring again to Fig. 1.Opening 101 communicates with groove 11, groove 16 and gathering sill 19, slide block 12 or 12 ' can enter into groove 11 by opening 101.Behind some slide blocks 12 or 12 ' enter groove 11, cover cover plate 102, anti-limited slip block 12 or 12 ' skid off from opening 101.In the present embodiment, cover plate 102 is screwed on the ruler 1.

The utility model comprises six rulers 1 and six cover connectors 2, and ruler 1 and connector 2 arbitrarily dismountable become the various patterns of commonly using in the several teaching.Ruler 1 serial connection can be done and lengthen the rule use, and three can overlap connectors 2 to ruler 1 by three be assembled into various triangles in the several teaching, can demonstrate leg-of-mutton stability, but the angle of demonstration of parallelism line is complementary, etc.Present embodiment provides wherein a kind of combined demonstration figure of arbitrary triangle, please referring to Fig. 9.

Four rulers 1 can be assembled into various quadrilaterals in the several teaching by some connectors 2, can demonstrate tetragonal instability, can demonstrate leg-of-mutton neutrality line, can demonstrate leg-of-mutton angular bisector, can demonstrate leg-of-mutton vertical line, it is similar to demonstrate triangle, etc.Present embodiment provides the wherein similar combined demonstration figure of a kind of triangle, please referring to Figure 10.

Five rulers 1 can be assembled into various pentagons in the several teaching by some connectors 2, can demonstrate trapezoidal neutrality line, etc.Present embodiment provides wherein a kind of combined demonstration figure of trapezoidal neutrality line, please referring to Figure 11.

Six rulers 1 can be assembled into various hexagons in the several teaching by some connectors 2, can demonstrate the diagonal line of rhombus, can demonstrate triangle core, can demonstrate leg-of-mutton orthocenter, etc.Present embodiment provides wherein a kind of cornerwise combined demonstration figure of rhombus, please referring to Figure 12.

Because, generally be to demonstrate at the blackboard of holding up, so, the demonstrator must prevent that it from falling because of deadweight with hand steered firmly the utility model, the utility model has been done an improvement for this reason, some magnetic magnetites 3 (as shown in Figure 1) are installed in the bottom surface of ruler 1, and magnetite 3 is installed and is bonded near in the counterbore (not shown) at ruler 1 both ends.In addition, in order to increase the sliding resistance of ruler 1 on blackboard, the end face at magnetite 3 is stained with skid-proof rubber 4 especially, and also the end face at screw head 23 is stained with skid-proof rubber 4, and in the present embodiment, skid-proof rubber 4 is a kind of latexes.When the utility model when blackboard made of iron is demonstrated, magnetite 3 can be adsorbed on ruler 1 on the blackboard and can not fall because of deadweight, skid-proof rubber 4 contacts the sliding resistance that has also increased ruler 1 with blackboard, need not to live with hand steered, provides convenience to the demonstrator.

The utility model by ruler and connector simple combination and demonstrate various geometric figures, the student be can cultivate better and analogy and observation ability beaten one's brains, start, associate, excite the geometric interest of Students ' Learning, conversion by Presentation Graphics, also can contact and the education of motion viewpoint the student, cultivate students ' analysis problem and problem-solving ability.

The above only is preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of within spirit of the present utility model and principle, doing, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.

Claims

1. polygon demonstration realia, comprise some rulers and connector, in the middle of described ruler, be provided with groove along its length direction, described connector passes described groove and can be free to slide in described groove, described ruler can rotate around described connector, described connector can be serially connected two and above described ruler, some described connectors can be connected into three and above described ruler two ends the polygon of a closure, it is characterized in that, some slide blocks are installed in described groove, be provided with perforation in the middle of the described slide block, described connector passes described perforation and stretches out from the end face of described ruler from the bottom surface of described ruler, described connector can freely rotate in described perforation, described connector can be fixed on optional position in the described groove to described slide block, indicates along its length scale at the end face of described ruler near its edge.

2. a kind of polygon demonstration realia according to claim 1, it is characterized in that, in described ruler, be concaved with groove at described groove respectively along the two sides of described ruler length direction, the bottom surface of described groove is vertical and parallel with described groove with described ruler end face, is concaved with some vertical grooves in the bottom surface of described groove in described ruler; Be concaved with gathering sill near on the side of described ruler bottom surface to described ruler at described groove, described gathering sill is between described groove and vertical groove.

3. a kind of polygon demonstration realia according to claim 2 is characterized in that, the cross section of described vertical groove is in the shape of the letter V, and aligns with the scale of described ruler end face in the summit of described V font.

4. a kind of polygon demonstration realia according to claim 2, it is characterized in that, described slide block is installed in the space of described groove and groove composition, and can in described groove, be free to slide, convex with boss on described slide block and the described ruler end face end face in opposite directions, the height of described boss is lower than described ruler end face and its width less than the width of described groove, convex shoulder is equipped with in the two sides of described slide block in the groove of described ruler, described convex shoulder cooperates with described trench gap and extends in the described groove.

5. a kind of polygon demonstration realia according to claim 4, it is characterized in that, be provided with guiding rib at described convex shoulder with respect to the position male of described gathering sill, described guiding rib extends in the described gathering sill and described gathering sill clearance fit, and can in described gathering sill, be free to slide, in the middle of the side of described convex shoulder near described trench bottom surfaces, in described convex shoulder, be concaved with mounting groove.

6. a kind of polygon demonstration realia according to claim 5, it is characterized in that, the decorative pearl on top of an official cap that spring and an end face are bulb is installed in described mounting groove successively, the opening of described mounting groove is less than the external diameter of the described decorative pearl on top of an official cap, and the bulb of the described decorative pearl on top of an official cap extended described convex shoulder surface also terminates in the opening part of described mounting groove.

7. a kind of polygon demonstration realia according to claim 5, it is characterized in that, described mounting groove is installed with Location resilient piece along the length direction setting of described ruler in described mounting groove, be provided with the projection with described vertical groove clearance fit in the middle of described Location resilient piece.

8. a kind of polygon demonstration realia according to claim 1, it is characterized in that, described connector comprises screw rod and nut, described screw rod one end is provided with screw head, the end face of described screw head is stained with skid-proof rubber, the external diameter of described screw head and the external diameter of described nut are greater than the width of described groove, described screw rod passes described perforation from described ruler bottom surface and freely rotates described perforation, described nut can be attached to the end face of described ruler, and be tightened on the described screw rod, can be fixed on optional position in the described groove to described slide block.

9. a kind of polygon demonstration realia according to claim 1, it is characterized in that, be concaved with some counterbores in the bottom surface of described ruler, described counterbore is arranged on the both ends near described ruler, install and bonding magnetic magnetite in the described counterbore, the end face of described magnetite is stained with skid-proof rubber.