CN204263794U - A kind of chi tool of primary school math teaching - Google Patents
A kind of chi tool of primary school math teaching Download PDFInfo
- Publication number
- CN204263794U CN204263794U CN201420741197.XU CN201420741197U CN204263794U CN 204263794 U CN204263794 U CN 204263794U CN 201420741197 U CN201420741197 U CN 201420741197U CN 204263794 U CN204263794 U CN 204263794U
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- corner
- chi tool
- embedded
- tool body
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Abstract
The utility model discloses a kind of chi tool of primary school math teaching, comprise chi tool body, described chi tool body is triangle, it has 30 °, 60 ° and 90 ° of drift angles, described 30 ° of corner position places are provided with the first embedded block, described 60 ° of corner position places are provided with the second embedded block, described 90 ° of corner position places are provided with the three embedded piece, described the three embedded piece is L shape, described 30 ° of corner position places are provided with the first corner block, described first corner block has the first embedded groove of cooperation first embedded block, described 60 ° of corner position places are provided with the second corner block, described second corner block has the second embedded groove coordinating described second embedded block, described 90 ° of corner position places are provided with rectangular block, described rectangular block has the three embedded groove coordinating described the three embedded piece, this device can carry out free replacing to three drift angles of chi tool body, avoids due to drift angle wearing and tearing and affects mathematical education.
Description
Technical field
The utility model relates to a kind of chi tool of primary school math teaching.
Background technology
In primary school math teaching process, need to carry out picture demonstration by chi tool, chi tool of the prior art is as a whole, in use, can wear and tear in three summits of chi tool, simultaneously also very likely because operate miss causes chi tool to be fallen on the ground, and cause drift angle to fracture, chi tool drift angle occur wearing and tearing or after fractureing, chi tool cannot draw right-angle line in once-through operation, therefore extends hours of instruction, reduce quality of instruction, simultaneously chi tool upon wear can only integral replacing, comparatively wastes resource, adds instruction cost.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of chi tool of primary school math teaching, this device can carry out free replacing to three drift angles of chi tool body, avoid due to drift angle wearing and tearing and affect mathematical education, the use cost of this device is comparatively cheap simultaneously.
For solving the problem, the utility model adopts following technical scheme:
A kind of chi tool of primary school math teaching, comprise chi tool body, described chi tool body is triangle, it has 30 °, 60 ° and 90 ° of drift angles, described 30 ° of corner position places are provided with the first embedded block, described 60 ° of corner position places are provided with the second embedded block, described 90 ° of corner position places are provided with the three embedded piece, described the three embedded piece is L shape, described 30 ° of corner position places are provided with the first corner block, described first corner block has the first embedded groove of cooperation first embedded block, described 60 ° of corner position places are provided with the second corner block, described second corner block has the second embedded groove coordinating described second embedded block, described 90 ° of corner position places are provided with rectangular block, described rectangular block has the three embedded groove coordinating described the three embedded piece, the close right-angle side position of described chi tool body is provided with the first scale and the second scale, the medium position place of described chi tool body offers the parallel lines chute of more than two.
As preferred technical scheme, described chi tool body offers angulation tank, described angulation tank is semicircle, and the medium position place of the straight line of described angulation tank is provided with accurate heart groove, and described accurate heart groove is semicircle.
As preferred technical scheme, the two ends arc transition of described parallel lines chute.
As preferred technical scheme, described chi tool body, the first corner block, the second corner block and rectangular block are PVC plastic and make, and the density of described first corner block, the second corner block and rectangular block is greater than the density of described chi tool body.
As preferred technical scheme, the thickness of described chi tool body is 1mm-1.5mm.
The beneficial effects of the utility model are: this device can carry out free replacing to three drift angles of chi tool body, avoid due to drift angle wearing and tearing and affect mathematical education, the use cost of this device is comparatively cheap simultaneously, after the wearing and tearing of the first corner block, the second corner block and rectangular block, only need to change this part, without the need to replacing whole chi tool, while economizing on resources, also very environmental protection, has set up parallel lines chute in this device, be convenient to draw parallel lines, simple to operation, the structure of this device is simple, with low cost, is applicable to promoting the use of.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail, to make advantage of the present utility model and feature can be easier to be readily appreciated by one skilled in the art, thus more explicit defining is made to protection domain of the present utility model.
Consult the chi tool of a kind of primary school math teaching shown in Fig. 1, comprise chi tool body 1, described chi tool body 1 is triangle, it has 30 °, 60 ° and 90 ° of drift angles, described 30 ° of corner position places are provided with the first embedded block 2, described 60 ° of corner position places are provided with the second embedded block 3, described 90 ° of corner position places are provided with the three embedded piece 4, described the three embedded piece 4 is L shape, described 30 ° of corner position places are provided with the first corner block 5, described first corner block 5 has first embedded groove (not shown) of cooperation first embedded block 2, described 60 ° of corner position places are provided with the second corner block 6, described second corner block 6 has the second embedded groove (not shown) coordinating described second embedded block 3, described 90 ° of corner position places are provided with rectangular block 7, described rectangular block 7 has the three embedded groove (not shown) coordinating described the three embedded piece 4, the close right-angle side position of described chi tool body 1 is provided with the first scale 101 and the second scale 102, the medium position place of described chi tool body 1 offers the parallel lines chute 103 of more than two.
A preferred embodiment in the utility model, described chi tool body 1 offers angulation tank 104, described angulation tank 104 is semicircle, and the medium position place of the straight line of described angulation tank 104 is provided with accurate heart groove 105, and described accurate heart groove 105 is semicircle.
A preferred embodiment in the utility model, the two ends arc transition of described parallel lines chute 103.
A preferred embodiment in the utility model, described chi tool body 1, first corner block 5, second corner block 6 and rectangular block 7 are PVC plastic and make, and the density of described first corner block 5, second corner block 6 and rectangular block 7 is greater than the density of described chi tool body 1.
A preferred embodiment in the utility model, the thickness of described chi tool body 1 is 1.5mm.
The beneficial effects of the utility model are: this device can carry out free replacing to three drift angles of chi tool body, avoid due to drift angle wearing and tearing and affect mathematical education, the use cost of this device is comparatively cheap simultaneously, after the wearing and tearing of the first corner block, the second corner block and rectangular block, only need to change this part, without the need to replacing whole chi tool, while economizing on resources, also very environmental protection, has set up parallel lines chute in this device, be convenient to draw parallel lines, simple to operation, the structure of this device is simple, with low cost, is applicable to promoting the use of.
More than show and describe general principle of the present utility model, principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and description just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope, the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (5)
1. the chi tool of a primary school math teaching, it is characterized in that: comprise chi tool body, described chi tool body is triangle, it has 30 °, 60 ° and 90 ° of drift angles, described 30 ° of corner position places are provided with the first embedded block, described 60 ° of corner position places are provided with the second embedded block, described 90 ° of corner position places are provided with the three embedded piece, described the three embedded piece is L shape, described 30 ° of corner position places are provided with the first corner block, described first corner block has the first embedded groove of cooperation first embedded block, described 60 ° of corner position places are provided with the second corner block, described second corner block has the second embedded groove coordinating described second embedded block, described 90 ° of corner position places are provided with rectangular block, described rectangular block has the three embedded groove coordinating described the three embedded piece, the close right-angle side position of described chi tool body is provided with the first scale and the second scale, the medium position place of described chi tool body offers the parallel lines chute of more than two.
2. the chi tool of primary school math teaching according to claim 1, it is characterized in that: described chi tool body offers angulation tank, described angulation tank is semicircle, and the medium position place of the straight line of described angulation tank is provided with accurate heart groove, and described accurate heart groove is semicircle.
3. the chi tool of primary school math teaching according to claim 1, is characterized in that: the two ends arc transition of described parallel lines chute.
4. the chi tool of primary school math teaching according to claim 1, it is characterized in that: described chi tool body, the first corner block, the second corner block and rectangular block are PVC plastic and make, the density of described first corner block, the second corner block and rectangular block is greater than the density of described chi tool body.
5. the chi tool of primary school math teaching according to claim 1, is characterized in that: the thickness of described chi tool body is 1mm-1.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420741197.XU CN204263794U (en) | 2014-12-02 | 2014-12-02 | A kind of chi tool of primary school math teaching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420741197.XU CN204263794U (en) | 2014-12-02 | 2014-12-02 | A kind of chi tool of primary school math teaching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204263794U true CN204263794U (en) | 2015-04-15 |
Family
ID=52798688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420741197.XU Expired - Fee Related CN204263794U (en) | 2014-12-02 | 2014-12-02 | A kind of chi tool of primary school math teaching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204263794U (en) |
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2014
- 2014-12-02 CN CN201420741197.XU patent/CN204263794U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20150415 Termination date: 20181202 |