CN203780146U - Novel teaching compasses - Google Patents
Novel teaching compasses Download PDFInfo
- Publication number
- CN203780146U CN203780146U CN201420200361.6U CN201420200361U CN203780146U CN 203780146 U CN203780146 U CN 203780146U CN 201420200361 U CN201420200361 U CN 201420200361U CN 203780146 U CN203780146 U CN 203780146U
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- CN
- China
- Prior art keywords
- hole
- screw
- compass foot
- compass leg
- compasses
- 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
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Abstract
The utility model discloses a pair of novel teaching compasses. Thepair ofcompasses comprises a first compass leg and a second compass leg, wherein upper ends of the first compass leg and the second compass leg are connected through a hinge; a centre is arranged at the lower end of the first compass leg; a through hole is formed in the second compass leg, and the height of the through hole is equal to that of the first compass leg; a press plate is arranged in the through hole; two elastic clamping pieces are symmetrically arranged below the press plate, fixed on the inner wall of the through hole respectively and mainly used for fixingchalk; a fixing ring with a screw holeis arranged above the second compass leg, and the screw hole is communicated with the through hole; a screw for driving the press plate to move up and down is arranged in the screw hole, and a rotary handle is arranged at the upper end of the screw. During usage of the compasses, firstly, multiple pieces of chalk are placed into the through hole, then the fixing ring covers the through hole, all that is required is to drive the screw to rotate through the rotary handle during usage, and the chalk is ejected by the press plate; thus, the compasses are simple and convenient to operate, and as a new technical scheme, the compasses are convenient to popularize and use.
Description
Technical field
The utility model relates to teaching apparatus for mathematics field, particularly relates to a kind of novel educational compasses.
Background technology
At present, in carrying out the process of mathematical education, compasses are indispensable teaching drawing tools, and existing compasses are in the process of using, chalk inserted in compasses and use, like this once the process Fracture that chalk is being used, just original half chalk need to be taken out, and then install new chalk, and use so cumbersomely, and wasted the time.
In sum, for the defect of prior art, need especially a kind of novel educational compasses.
Utility model content
The utility model, in order to solve the problem of prior art, provides a kind of novel educational compasses.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of novel educational compasses is provided, comprise the first compass foot and the second compass foot, the upper end of described the first compass foot and the second compass foot is connected through the hinge, the lower end of the first compass foot is provided with thimble, in described the second compass foot, be provided with through hole, the height of through hole equals the height of the first compass foot, in through hole, be provided with pressing plate, below pressing plate, be arranged with two elastic clips, two elastic clips are separately fixed on the inwall of through hole, elastic clip is mainly used in fixedly chalk, above described the second compass foot, be provided with the retainer plate with screw, screw is communicated with through hole, in screw, be provided with for the upper and lower screw rod of dynamic pressure plate, the upper end of screw rod is provided with swing handle.
In preferred embodiment of the utility model, described the first compass foot is provided with for storing the groove of chalk, and groove is provided with cover plate.
The utility model compared with prior art, the advantage having is: a kind of novel educational compasses described in the utility model, comprise the first compass foot and the second compass foot, the upper end of described the first compass foot and the second compass foot is connected through the hinge, the lower end of the first compass foot is provided with thimble, in described the second compass foot, be provided with through hole, the height of through hole equals the height of the first compass foot, in through hole, be provided with pressing plate, below pressing plate, be arranged with two elastic clips, two elastic clips are separately fixed on the inwall of through hole, elastic clip is mainly used in fixedly chalk, above described the second compass foot, be provided with the retainer plate with screw, screw is communicated with through hole, in screw, be provided with for the upper and lower screw rod of dynamic pressure plate, the upper end of screw rod is provided with swing handle.The utility model, in the process of using, is first first put into through hole by branched chalk, then covers retainer plate, in the process of use, only need to drive screw rod to rotate by swing handle, adopts pressing plate that chalk is ejected.Simple to operation like this, be a kind of new technical scheme, be convenient to promote the use of.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Reference numeral is
1, the first compass foot; 2, the second compass foot; 3, hinge; 4, thimble; 5, through hole;
6, pressing plate; 7, elastic clip; 8, retainer plate; 9, screw rod; 10, swing handle;
11, groove; 12, cover plate.
The specific embodiment
For technological means, creation characteristic that the utility model is realized, reach object and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
As shown in Figure 1, a kind of novel educational compasses described in the utility model, comprise the first compass foot 1 and the second compass foot 2, the upper end of described the first compass foot 1 and the second compass foot 2 is connected by hinge 3, the lower end of the first compass foot 1 is provided with thimble 4, in described the second compass foot 2, be provided with through hole 5, the height of through hole 5 equals the height of the first compass foot 1, in through hole 5, be provided with pressing plate 6, below pressing plate 6, be arranged with two elastic clips 7, two elastic clips 7 are separately fixed on the inwall of through hole 5, elastic clip 7 is mainly used in fixedly chalk, above described the second compass foot 2, be provided with the retainer plate 8 with screw, screw is communicated with through hole 5, in screw, be provided with for the upper and lower screw rod 9 of dynamic pressure plate 6, the upper end of screw rod 9 is provided with swing handle 10.
By a kind of preferred version of the present utility model, described the first compass foot 1 is provided with for storing the groove 11 of chalk, and groove 11 is provided with cover plate 12.
The utility model, in the process of using, is first first put into through hole by branched chalk, then covers retainer plate, in the process of use, only need to drive screw rod to rotate by swing handle, adopts pressing plate that chalk is ejected.Simple to operation like this, be a kind of new technical scheme, be convenient to promote the use of.
The foregoing is only embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or conversion of equivalent flow process that utilizes the utility model description and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (2)
1. a novel educational compasses, comprise the first compass foot (1) and the second compass foot (2), the upper end of described the first compass foot (1) and the second compass foot (2) is connected by hinge (3), the lower end of the first compass foot (1) is provided with thimble (4), it is characterized in that, in described the second compass foot (2), be provided with through hole (5), the height of through hole (5) equals the height of the first compass foot (1), in through hole (5), be provided with pressing plate (6), below pressing plate (6), be arranged with two elastic clips (7), two elastic clips (7) are separately fixed on the inwall of through hole (5), above described the second compass foot (2), be provided with the retainer plate (8) with screw, screw is communicated with through hole (5), in screw, be provided with for the upper and lower screw rod (9) of dynamic pressure plate (6), the upper end of screw rod (9) is provided with swing handle (10).
2. a kind of novel educational compasses according to claim 1, is characterized in that, described the first compass foot (1) is provided with the groove (11) for storing chalk, and groove (11) is provided with cover plate (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420200361.6U CN203780146U (en) | 2014-04-23 | 2014-04-23 | Novel teaching compasses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420200361.6U CN203780146U (en) | 2014-04-23 | 2014-04-23 | Novel teaching compasses |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203780146U true CN203780146U (en) | 2014-08-20 |
Family
ID=51316364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420200361.6U Expired - Fee Related CN203780146U (en) | 2014-04-23 | 2014-04-23 | Novel teaching compasses |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203780146U (en) |
-
2014
- 2014-04-23 CN CN201420200361.6U patent/CN203780146U/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: 20140820 Termination date: 20150423 |
|
| EXPY | Termination of patent right or utility model |