CN204526557U - A kind of Higher Mathematics Teaching chi - Google Patents
A kind of Higher Mathematics Teaching chi Download PDFInfo
- Publication number
- CN204526557U CN204526557U CN201520245895.5U CN201520245895U CN204526557U CN 204526557 U CN204526557 U CN 204526557U CN 201520245895 U CN201520245895 U CN 201520245895U CN 204526557 U CN204526557 U CN 204526557U
- Authority
- CN
- China
- Prior art keywords
- chi body
- ruler
- cavity
- edge
- chi
- 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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- Drawing Aids And Blackboards (AREA)
- Toys (AREA)
Abstract
A kind of Higher Mathematics Teaching chi, comprise chi body, the edge of described chi body is provided with the cavity of hatch frame, centre position in described cavity is hinged with ruler and support arm by axle, the termination of described support arm is provided with protractor, described ruler is stretching structure, the lower surface of described ruler is provided with teeth, edge in described cavity is hinged with the arc-shaped rack matched with teeth by rotating shaft, chi body and blackboard are fitted by the utility model, parallel lines are drawn with coordinating of ruler by chi body, vertical line, leg-of-mutton various line segment, drafting effect is accurate, improve efficiency of giving lessons.
Description
Technical field
The utility model relates to a kind of Higher Mathematics Teaching chi.
Background technology
In daily mathematical education, mathematics teacher often needs to draw parallel lines, vertical line, leg-of-mutton high on blackboard, when drawing above-mentioned line segment with traditional teaching aid, teacher usually switches back and forth by several teaching aid and draws, and usually locate by subjective observation when drawing, this not only adds the work difficulty of teacher, affect efficiency of giving lessons, and drafting effect is also undesirable.
Summary of the invention
The purpose of this utility model is for the deficiencies in the prior art, provides a kind of Higher Mathematics Teaching chi, solves existing technical problem.
Described object is achieved by the following scheme: a kind of Higher Mathematics Teaching chi, comprise chi body, the edge of described chi body is provided with the cavity of hatch frame, centre position in described cavity is hinged with ruler and support arm by axle, the termination of described support arm is provided with protractor, described ruler is stretching structure, the lower surface of described ruler is provided with teeth, edge in described cavity is hinged with the arc-shaped rack matched with teeth by rotating shaft, one end edge of described chi body is provided with press button and groove, battery case is provided with in described groove, battery is provided with in described battery case, two ends in described cavity are provided with bulb, the inwall of described cavity is provided with wire casing, connecting line is provided with in described wire casing, the lower surface of described chi body is provided with chute, slide block is inlaid with in described chute, the edge of described slide block is provided with a rotating shaft, a described rotating shaft is provided with a supporting leg, the termination of a described supporting leg is provided with chalk draw-in groove, edge in described chute is provided with No. two rotating shafts, described No. two rotating shafts are provided with No. two supporting legs, the termination of described No. two supporting legs is provided with needle point.
The upper surface of described chi body is provided with graduation mark.
The utility model has the following advantages: chi body and blackboard are fitted by the utility model, draws parallel lines, vertical line, leg-of-mutton various line segment by chi body with coordinating of ruler, draws effect accurately, improves efficiency of giving lessons.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the syndeton schematic diagram of chi body and chute.
Wherein, 1-chi body, 2-cavity, 3-ruler, 4-support arm, 5-protractor, 6-rotating shaft, 7-arc-shaped rack, 8-switch, 9-battery case, 10-bulb, 11-wire casing, 12-chute, 13-slide block, 14-rotating shaft, 15-supporting leg, 16-chalk draw-in groove, 17-No. bis-rotating shafts, 18-No. bis-supporting legs, 19-needle point.
Detailed description of the invention
The utility model is elaborated preferred embodiment below in conjunction with accompanying drawing.
A kind of Higher Mathematics Teaching chi, comprise chi body 1, the edge of described chi body 1 is provided with the cavity 2 of hatch frame, centre position in described cavity 2 is hinged with ruler 3 and support arm 4 by axle, the termination of described support arm 4 is provided with protractor 5, described ruler 3 is stretching structure, the lower surface of described ruler 3 is provided with teeth, edge in described cavity 2 is hinged with the arc-shaped rack 7 matched with teeth by rotating shaft 6, one end edge of described chi body 1 is provided with press button 8 and groove, battery case 9 is provided with in described groove, battery is provided with in described battery case 9, two ends in described cavity 2 are provided with bulb 10, the inwall of described cavity 2 is provided with wire casing 11, connecting line is provided with in described wire casing 11, the lower surface of described chi body 1 is provided with chute 12, slide block 13 is inlaid with in described chute 12, the edge of described slide block 13 is provided with a rotating shaft 14, a described rotating shaft 14 is provided with a supporting leg 15, the termination of a described supporting leg 15 is provided with chalk draw-in groove 16, edge in described chute 12 is provided with No. two rotating shafts 17, described No. two rotating shafts 17 are provided with No. two supporting legs 18, the termination of described No. two supporting legs 18 is provided with needle point 19.The upper surface of described chi body 1 is provided with graduation mark.
The lower surface of chi body 1 and blackboard are fitted, ruler 3 and chi body 1 angulation is made by axle, with coordinating of arc-shaped rack 7, ruler 3 is fixed by teeth, the movement of ruler 3 when preventing chalk from contacting with ruler 3, by axle, protractor 5 and ruler 3 are set in cavity 2 after using.Arc-shaped rack 7 is merged by rotating shaft 6 and chi body 1, is convenient for carrying.
Connecting line is connected with bulb 10, and connecting line is connected with battery by switch 8, Push switch 8, and bulb 10 lights, the graduation mark on convenient viewing chi body 1.
Be inserted in by chalk in chalk draw-in groove 16, needle point 19 and blackboard are fixed, one end of rotary ruler body 1, needle point 19 is the center of circle, and chalk draws out circle on blackboard, by the movement of slide block 13 in chute 12, formulate the size of drawing circle, in chute 12, be provided with the retreat stop block of anti-limited slip block 13 movement.By a rotating shaft 14 and No. two rotating shafts 17 after using, be arranged in chute 12 completely by a supporting leg 15 and No. two supporting legs 18, the lower surface and the blackboard that do not delay chi body 1 are fitted.
Present embodiment does not just limit its protection domain to the exemplary illustrated of this patent; those skilled in the art can also carry out local to it and change; as long as no the Spirit Essence exceeding this patent, be all considered as the equivalent replacement to this patent, all at the protection domain of this patent.
Claims (2)
1. a Higher Mathematics Teaching chi, comprise chi body (1), it is characterized in that: the edge of described chi body (1) is provided with the cavity (2) of hatch frame, centre position in described cavity (2) is hinged with ruler (3) and support arm (4) by axle, the termination of described support arm (4) is provided with protractor (5), described ruler (3) is stretching structure, the lower surface of described ruler (3) is provided with teeth, edge in described cavity (2) is hinged with by rotating shaft (6) arc-shaped rack (7) matched with teeth, one end edge of described chi body (1) is provided with press button (8) and groove, battery case (9) is provided with in described groove, described battery case is provided with battery in (9), two ends in described cavity (2) are provided with bulb (10), the inwall of described cavity (2) is provided with wire casing (11), described wire casing is provided with connecting line in (11), the lower surface of described chi body (1) is provided with chute (12), slide block (13) is inlaid with in described chute (12), the edge of described slide block (13) is provided with a rotating shaft (14), a described rotating shaft (14) is provided with a supporting leg (15), the termination of a described supporting leg (15) is provided with chalk draw-in groove (16), edge in described chute (12) is provided with No. two rotating shafts (17), described No. two rotating shafts (17) are provided with No. two supporting legs (18), the termination of described No. two supporting legs (18) is provided with needle point (19).
2. Higher Mathematics Teaching chi according to claim 1, is characterized in that: the upper surface of described chi body (1) is provided with graduation mark.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520245895.5U CN204526557U (en) | 2015-04-22 | 2015-04-22 | A kind of Higher Mathematics Teaching chi |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520245895.5U CN204526557U (en) | 2015-04-22 | 2015-04-22 | A kind of Higher Mathematics Teaching chi |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204526557U true CN204526557U (en) | 2015-08-05 |
Family
ID=53740602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520245895.5U Expired - Fee Related CN204526557U (en) | 2015-04-22 | 2015-04-22 | A kind of Higher Mathematics Teaching chi |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204526557U (en) |
-
2015
- 2015-04-22 CN CN201520245895.5U patent/CN204526557U/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: 20150805 Termination date: 20160422 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |