CN208760275U - A kind of Combined-type math teaching aid - Google Patents
A kind of Combined-type math teaching aid Download PDFInfo
- Publication number
- CN208760275U CN208760275U CN201820760758.9U CN201820760758U CN208760275U CN 208760275 U CN208760275 U CN 208760275U CN 201820760758 U CN201820760758 U CN 201820760758U CN 208760275 U CN208760275 U CN 208760275U
- Authority
- CN
- China
- Prior art keywords
- open slot
- connecting rod
- protractor
- combined
- ontology
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000007246 mechanism Effects 0.000 claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 7
- 239000010959 steel Substances 0.000 claims abstract description 7
- 229920001971 elastomer Polymers 0.000 claims description 10
- 239000005060 rubber Substances 0.000 claims description 10
- 125000004122 cyclic group Chemical group 0.000 claims 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052742 iron Inorganic materials 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Drawing Aids And Blackboards (AREA)
Abstract
The utility model discloses a kind of Combined-type math teaching aids, including protractor ontology, the first open slot and the second open slot are had above the protractor ontology, placing groove is provided on first open slot and the second open slot side protractor ontology, pressing plate is equipped with inside the placing groove, clamping mechanism is installed on the protractor ontology, the clamping mechanism includes sleeve and connecting rod, the connecting rod pivot bush unit is on the inside of sleeve, and connecting rod is through sleeve both ends, limited block is fixedly connected on the outside of the connecting rod, spring is cased on the outside of the connecting rod of the limited block side.The setting of graduation mark can allow the radius length of chalk according to actual needs to carry out positioning placement, annular magnetic iron rule can be adsorbed on blackboard, the center of annular magnet is circle, it chalk can be used to pass through in the middle part of annular magnet and draw the center of circle, the setting of steel ball is easy for the rotation of protractor ontology, so that the rotation operation for drawing bowlder is more convenient.
Description
Technical field
The utility model relates to teaching aid technical field, specially a kind of Combined-type math teaching aid.
Background technique
The essential tool of mathematics classroom teacher teaching, such as one kind application No. is CN 00208778.2 when protractor
The rotation goniometer being formed by stacking by two pieces of protractors, above one piece be common semicircle protractor, below one piece be outer
It has the disc protractor of circular groove week, passes through the diameter, radius and above half for one piece of hollow out in this disc protractor
The identical semicircle of round protractor inner ring radius, semicircle protractor above can turn in following disc protractor
It is dynamic.
The protractor is with can drawing various different sizes fan-shaped and angle, angulation and can draw angle, can draw rectangle, square and
Various parallelogram can draw equilateral, isosceles and arbitrary triangle, can draw isosceles trapezoid, can also draw wave, positive five
Angle star, equilateral hexagon, ellipse etc..
But the protractor as compasses in the presence of can not use simultaneously and the device is for drawing the length of some patterns
Degree can not be accurately positioned, thus a kind of Combined-type math teaching aid is provided solve that the above-mentioned problem extremely has must
It wants.
Utility model content
The purpose of this utility model is to provide a kind of Combined-type math teaching aids, mentioned above in the background art to solve
Problem.
To achieve the above object, the utility model provides the following technical solutions: a kind of Combined-type math teaching aid, including angulation
Device ontology, the protractor ontology top have the first open slot and the second open slot, first open slot and second
It is provided with placing groove on the protractor ontology of open slot side, pressing plate is equipped with inside the placing groove, is installed on the protractor ontology
There is clamping mechanism, the clamping mechanism includes sleeve and connecting rod, and the connecting rod pivot bush unit is on the inside of sleeve, and connecting rod runs through
It is fixedly connected with limited block on the outside of sleeve both ends, the connecting rod, is cased with spring on the outside of the connecting rod of the limited block side, it is described
Sleeve one end is fixedly connected with link block, is connected to above pressing plate below the link block, and the connecting rod other end is fixedly connected
There is pull ring, through-hole is provided on the protractor ontology between placing groove described in two groups, ringshaped magnet is installed inside the through-hole.
Preferably, steel ball several groups are equipped between ringshaped magnet outside on the inside of the through-hole.
Preferably, it is respectively 30 degree, 60 degree and 90 degree of right angled triangle that first open slot, which is interior angle, and described second
Open slot interior angle is respectively 45 degree, 45 degree and 90 degree of isosceles right triangle.
Preferably, handle is installed on the protractor ontology between first open slot and the second open slot, described
Hand outer sheath rubber sleeve.
Preferably, the first open slot outside, the second open slot outside and protractor ontology upper outer are equipped with quarter
Spend line.
Preferably, the pressing plate side and placing groove interior side are equipped with rubber pad.
Compared with prior art, the utility model has the beneficial effects that a kind of Combined-type math teaching aid of the utility model, knot
Structure is novel, compasses can also be used as to use while capable of using as protractor, and the protractor can also fixed length draw
Various triangular, it is easy to use.By pulling the pull ring on clamping mechanism, so that pressing plate is mobile, between pressing plate and placing groove
Chalk can be placed between rubber pad, unclamp pull ring, under the action of spring, limited block and pressing plate, chalk is jammed, graduation mark
Setting the radius length of chalk according to actual needs can be allowed to carry out positioning placement, annular magnetic iron rule can be adsorbed on
On blackboard, the center of annular magnet is circle, chalk can be used to pass through in the middle part of annular magnet and draws the center of circle, the setting of steel ball is just
In the rotation of protractor ontology, so that the rotation operation for drawing bowlder is more convenient.Pass through the first open slot and the second open slot and quarter
The setting for spending line not only may be implemented fixed length and draw right angled triangle, device can also integrally draw a variety of fixed length triangles and
Polygon.
Detailed description of the invention
FIG. 1 is a schematic structural view of the utility model；
Fig. 2 is the utility model clamping mechanism structural schematic diagram；
Fig. 3 is the utility model part A partial enlargement structural representation.
In figure: 1 protractor ontology, 2 placing grooves, 3 pressing plates, 4 clamping mechanisms, 5 sleeves, 6 connecting rods, 7 springs, 8 limited blocks, 9
Link block, 10 pull rings, 11 first open slots, 12 second open slots, 13 handles, 14 through-holes, 15 ringshaped magnets, 16 steel balls, 17 rubbers
Rubber mat, 18 graduation marks.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Fig. 1-3 is please referred to, the utility model provides a kind of technical solution: a kind of Combined-type math teaching aid, including protractor
Ontology 1 has the first open slot 11 and the second open slot 12, first open slot 11 above the protractor ontology 1
Be provided with placing groove 2 on 12 side protractor ontology 1 of the second open slot, pressing plate 3, the angulation are equipped with inside the placing groove 2
Clamping mechanism 4 is installed on device ontology 1, the clamping mechanism 4 includes sleeve 5 and connecting rod 6,6 pivot bush unit of connecting rod in
The inside of sleeve 5, and connecting rod 6 is fixedly connected with limited block 8, the limited block 8 one on the outside of the connecting rod 6 through 5 both ends of sleeve
Spring 7 is cased on the outside of the connecting rod 6 of side, described 5 one end of sleeve is fixedly connected with link block 9, is connected to pressure below the link block 9
3 top of plate, 6 other end of connecting rod are fixedly connected with pull ring 10, open on the protractor ontology 1 between placing groove 2 described in two groups
There is through-hole 14, ringshaped magnet 15 is installed inside the through-hole 14.
16 several groups of steel ball are equipped between 14 inside of through-hole and 15 outside of ringshaped magnet.First open slot 11 is
Interior angle is respectively 30 degree, 60 degree and 90 degree of right angled triangle, and 12 interior angle of the second open slot is respectively 45 degree, 45 degree and 90
The isosceles right triangle of degree.Handle is installed on protractor ontology 1 between first open slot 11 and the second open slot 12
Hand 13, the 13 outer sheath rubber sleeve of handle, the setting of handle 13 is then conveniently to pick up use.Outside first open slot 11
Side, 12 outside of the second open slot and 1 upper outer of protractor ontology are equipped with graduation mark 18.3 side of pressing plate and placing groove 2
Interior side is equipped with rubber pad 17.
Working principle: by pulling the pull ring 10 on clamping mechanism 4, so that pressing plate 3 is mobile, between pressing plate 3 and placing groove 2
Rubber pad 17 between can place chalk, unclamp pull ring 10, under the action of spring 7, limited block 8 and pressing plate 3, chalk is pressed from both sides
Firmly, the setting of graduation mark 18 can allow the radius length of chalk according to actual needs to carry out positioning placement, annular magnet
15 can be adsorbed on blackboard, and the center of annular magnet 15 is circle, chalk can be used to pass through and draw in the middle part of annular magnet 15
The center of circle, the setting of steel ball 16 are easy for the rotation of protractor ontology 1, so that the rotation operation for drawing bowlder is more convenient.Pass through first
The setting of open slot 11 and the second open slot 12 and graduation mark 18 not only may be implemented fixed length and draw right angled triangle, and device is whole
Body can also draw a variety of fixed length triangles and polygon.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired
Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.
Claims (6)
1. a kind of Combined-type math teaching aid, including protractor ontology (1), it is characterised in that: divide above the protractor ontology (1)
It is not provided with the first open slot (11) and the second open slot (12), first open slot (11) and the second open slot (12) side amount
It is provided on angle device ontology (1) placing groove (2), is equipped with pressing plate (3) inside the placing groove (2), pacified on the protractor ontology (1)
Equipped with clamping mechanism (4), the clamping mechanism (4) includes sleeve (5) and connecting rod (6), and connecting rod (6) pivot bush unit is in set
On the inside of cylinder (5), and connecting rod (6), through sleeve (5) both ends, connecting rod (6) outside is fixedly connected with limited block (8), described
It is cased with spring (7) on the outside of the connecting rod (6) of limited block (8) side, described sleeve (5) one end is fixedly connected with link block (9), described
It is connected to below link block (9) above pressing plate (3), connecting rod (6) other end is fixedly connected with pull ring (10), puts described in two groups
It sets and is provided with through-hole (14) on the protractor ontology (1) between slot (2), ringshaped magnet (15) are installed inside the through-hole (14).
2. a kind of Combined-type math teaching aid according to claim 1, it is characterised in that: on the inside of the through-hole (14) and cyclic annular
Steel ball (16) several groups are equipped between on the outside of magnet (15).
3. a kind of Combined-type math teaching aid according to claim 1, it is characterised in that: first open slot (11) is interior
Angle is respectively 30 degree, 60 degree and 90 degree of right angled triangle, and the second open slot (12) interior angle is respectively 45 degree, 45 degree and 90
The isosceles right triangle of degree.
4. a kind of Combined-type math teaching aid according to claim 1, it is characterised in that: first open slot (11) and
It is equipped with handle (13) on protractor ontology (1) between two open slots (12), handle (13) the outer sheath rubber sleeve.
5. a kind of Combined-type math teaching aid according to claim 1, it is characterised in that: first open slot (11) is outside
On the outside of side, the second open slot (12) and protractor ontology (1) upper outer is equipped with graduation mark (18).
6. a kind of Combined-type math teaching aid according to claim 1, it is characterised in that: pressing plate (3) side and placement
Slot (2) interior side is equipped with rubber pad (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820760758.9U CN208760275U (en) | 2018-05-22 | 2018-05-22 | A kind of Combined-type math teaching aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820760758.9U CN208760275U (en) | 2018-05-22 | 2018-05-22 | A kind of Combined-type math teaching aid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208760275U true CN208760275U (en) | 2019-04-19 |
Family
ID=66126229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820760758.9U Expired - Fee Related CN208760275U (en) | 2018-05-22 | 2018-05-22 | A kind of Combined-type math teaching aid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208760275U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110641208A (en) * | 2019-10-15 | 2020-01-03 | 南通理工学院 | Multifunctional teaching drawing instrument |
-
2018
- 2018-05-22 CN CN201820760758.9U patent/CN208760275U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110641208A (en) * | 2019-10-15 | 2020-01-03 | 南通理工学院 | Multifunctional teaching drawing instrument |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190419 |