CN204196535U - Teaching aid special in a kind of mathematical education - Google Patents
Teaching aid special in a kind of mathematical education Download PDFInfo
- Publication number
- CN204196535U CN204196535U CN201420691953.2U CN201420691953U CN204196535U CN 204196535 U CN204196535 U CN 204196535U CN 201420691953 U CN201420691953 U CN 201420691953U CN 204196535 U CN204196535 U CN 204196535U
- Authority
- CN
- China
- Prior art keywords
- ruler
- retainer ring
- chalk
- rotating shaft
- bull stick
- 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
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- Drawing Aids And Blackboards (AREA)
Abstract
The utility model discloses teaching aid special in a kind of mathematical education, it relates to teaching field, and it comprises disk, rotating shaft, bull stick, retainer ring, chalk hole, bolt, ruler, tip, support, connecting rod and pen clamping sleeve; Its reasonable in design, modern design is unique, simple to operate, easy to use, the rotation that rotating shaft can realize between bull stick and ruler is set, is convenient to regulate any angle, chalk can be placed on is placed in pen clamping sleeve in chalk hole or by chalk, all can draw size circle arbitrarily.
Description
Technical field:
The utility model relates to realia, is specifically related to teaching aid special in a kind of mathematical education.
Background technology:
At present, compasses of a great variety, but the calipers function that math teachers are used when imparting knowledge to students is more single, because blackboard is relatively level and smooth, pointer and the blackboard contact area of compasses are little, can not fix, easily skid during operation with blackboard, compasses can not directly determine radius of a circle length, operate cumbersome.
Utility model content:
In order to solve the problem, the utility model provides a kind of technical scheme: teaching aid special in a kind of mathematical education, comprises disk, rotating shaft, bull stick, retainer ring, chalk hole, bolt, ruler, tip, support, connecting rod and pen clamping sleeve; Described rotating shaft is arranged on the center of disk; Described bull stick and ruler are linked together by rotating shaft; Described bull stick is connected with retainer ring, and described retainer ring is provided with chalk hole; The side of described bolt-through retainer ring, and bolt contacts with retainer ring; The end of described ruler is provided with a tip, and described ruler is connected with a connecting rod by support; Described connecting rod is connected with a pen clamping sleeve.
As preferably, described ruler is provided with centre zero scale.
As preferably, hinged between described ruler and support.
The beneficial effects of the utility model: its reasonable in design, modern design is unique, simple to operate, easy to use, the rotation that rotating shaft can realize between bull stick and ruler is set, be convenient to regulate any angle, chalk can be placed on and be placed in pen clamping sleeve in chalk hole or by chalk, all can draw size circle arbitrarily.
Accompanying drawing illustrates:
For ease of illustrating, the utility model is described in detail by following concrete enforcement and accompanying drawing.
Fig. 1 is structural representation of the present utility model.
1-disk; 2-rotating shaft; 3-bull stick; 4-retainer ring; 4a-chalk hole; 5-bolt; 6-ruler; 7-tip; 8-support; 9-connecting rod; 10-pen clamping sleeve.
Detailed description of the invention:
As shown in Figure 1, this detailed description of the invention by the following technical solutions: comprise disk 1, rotating shaft 2, bull stick 3, retainer ring 4, chalk hole 4a, bolt 5, ruler 6, tip 7, support 8, connecting rod 9 and pen clamping sleeve 10; Described rotating shaft 2 is arranged on the center of disk 1; Described bull stick 3 and ruler 6 are linked together by rotating shaft 2; Described bull stick 3 is connected with retainer ring 4, and described retainer ring 4 is provided with chalk hole 4a; Described bolt 5 runs through the side of retainer ring 4, and bolt 5 contacts with retainer ring 4; The end of described ruler 6 is provided with a tip 7, and described ruler 6 is connected with a connecting rod 9 by support 8; Described connecting rod 9 is connected with a pen clamping sleeve 10.
Wherein, described ruler 6 is provided with centre zero scale; Hinged between described ruler 6 and support 8.
The using state of this device is: prevented by chalk in chalk hole when use, and by fixed disc, retainer ring regulates the size of circle, draws circle, or is placed in pen clamping sleeve by chalk, regulates the angular dimension between connecting rod and ruler, draws circle.
More than show and describe general principle of the present utility model and 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 (3)
1. a teaching aid special in mathematical education, is characterized in that: comprise disk (1), rotating shaft (2), bull stick (3), retainer ring (4), chalk hole (4a), bolt (5), ruler (6), tip (7), support (8), connecting rod (9) and pen clamping sleeve (10);
Described rotating shaft (2) is arranged on the center of disk (1);
Described bull stick (3) and ruler (6) are linked together by rotating shaft (2);
Described bull stick (3) is connected with retainer ring (4), described retainer ring (4) is provided with chalk hole (4a);
Described bolt (5) runs through the side of retainer ring (4), and bolt (5) contacts with retainer ring (4);
The end of described ruler (6) is provided with a tip (7), and described ruler (6) is connected with a connecting rod (9) by support (8);
Described connecting rod (9) is connected with a pen clamping sleeve (10).
2. teaching aid special in a kind of mathematical education according to claim 1, is characterized in that: described ruler (6) is provided with centre zero scale.
3. teaching aid special in a kind of mathematical education according to claim 1, is characterized in that: hinged between described ruler (6) and support (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420691953.2U CN204196535U (en) | 2014-11-06 | 2014-11-06 | Teaching aid special in a kind of mathematical education |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420691953.2U CN204196535U (en) | 2014-11-06 | 2014-11-06 | Teaching aid special in a kind of mathematical education |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204196535U true CN204196535U (en) | 2015-03-11 |
Family
ID=52654530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420691953.2U Expired - Fee Related CN204196535U (en) | 2014-11-06 | 2014-11-06 | Teaching aid special in a kind of mathematical education |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204196535U (en) |
-
2014
- 2014-11-06 CN CN201420691953.2U patent/CN204196535U/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 |
Granted publication date: 20150311 Termination date: 20151106 |
|
| EXPY | Termination of patent right or utility model |