CN203974327U - Can with the concentrically ringed compasses of the fixed picture of blackboard - Google Patents
Can with the concentrically ringed compasses of the fixed picture of blackboard Download PDFInfo
- Publication number
- CN203974327U CN203974327U CN201420365674.7U CN201420365674U CN203974327U CN 203974327 U CN203974327 U CN 203974327U CN 201420365674 U CN201420365674 U CN 201420365674U CN 203974327 U CN203974327 U CN 203974327U
- Authority
- CN
- China
- Prior art keywords
- crossfoot
- main pin
- foot
- compass foot
- main
- 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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- Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
Abstract
The utility model belongs to teaching aid, be particularly related to one can with the concentrically ringed compasses of the fixed picture of blackboard, be provided with main pin taper (8-1) in the lower end of main pin (8), the lower end of main foot seat (9) is threaded in the center of base (10), be provided with main pin handle (1) on the top of main pin (8), upper crossfoot one adapter sleeve (3) that is flexibly connected of main pin (8) below main pin handle (1), upper crossfoot two adapter sleeves (15) that are flexibly connected of main pin (8) below crossfoot one adapter sleeve (3), at crossfoot one adapter sleeve (3) and the fixing crossfoot one (4) of the upper horizontal direction of crossfoot two adapter sleeves (15) and crossfoot two (14), at compass foot one adapter sleeve (5) and the fixing compass foot one (6) of compass foot two adapter sleeves (13) and compass foot two (12), in the below of compass foot one (6) and compass foot two (12), be provided with paintbrush hole (6-1), in paintbrush hole (6-1), fix paintbrush one (7) and paintbrush two (11), can be convenient, flexible with the concentrically ringed compasses of the fixed picture of blackboard, time saving and energy saving, be specially adapted to middle school's school instruction.
Description
Technical field
The utility model belongs to teaching aid, particularly one can with the concentrically ringed compasses of the fixed picture of blackboard.
Background technology
At present, in mathematical education, it is all generally with common compasses that teacher draws concentric circles on blackboard, first draws the aperture that a circle converts compasses again draw another circle, very time-consuming, effort in the same center of circle.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned technical deficiency, provides one conveniently to impart knowledge to students, use flexible, time saving and energy saving can with the concentrically ringed compasses of the fixed picture of blackboard.
The technical scheme that the utility model technical solution problem adopts is: can comprise main pin with the concentrically ringed compasses of the fixed picture of blackboard, main pin handle, compass foot one, compass foot two, trip bolt, be characterized in being provided with in the lower end of main pin main pin taper, main pin is inserted into by main pin taper in the main foot seat taper hole of main foot seat, the lower end of main foot seat is threaded in the center of base, be provided with main pin handle on the top of main pin, on main pin below main pin handle, be flexibly connected crossfoot one adapter sleeve, on main pin below crossfoot one adapter sleeve, be flexibly connected crossfoot two adapter sleeves, on the side of crossfoot one adapter sleeve and crossfoot two adapter sleeves, be provided with trip bolt, the fixing crossfoot one of horizontal direction and crossfoot two on crossfoot one adapter sleeve and crossfoot two adapter sleeves, on crossfoot one and crossfoot two, be flexibly connected compass foot one adapter sleeve and compass foot two adapter sleeves, below compass foot one adapter sleeve and compass foot two adapter sleeves, fix compass foot one and compass foot two with crossfoot one and crossfoot two vertical direction, in below compass foot one and compass foot two, be provided with paintbrush hole, in paintbrush hole, fix paintbrush one and paintbrush two with trip bolt.
The beneficial effects of the utility model are: can on magnet board, firmly locate with the concentrically ringed compasses of the fixed picture of blackboard, and with two pin picture concentric circles of compasses, convenient, flexible, time saving and energy saving, be specially adapted to middle school's school instruction.
Brief description of the drawings
Illustrate with embodiment below in conjunction with accompanying drawing.
Fig. 1 be can with the compasses structure chart of the concentrically ringed compasses of the fixed picture of blackboard.
In figure, the main pin handle of 1-; 2-trip bolt; 3-crossfoot one adapter sleeve; 4-crossfoot one; 5-compass foot one adapter sleeve; 6-compass foot one; 6-1-paintbrush hole; 7-paintbrush one; The main pin of 8-; The main pin taper of 8-1-; 9-main foot seat; 9-1-main foot seat taper hole; 10-base; 11-paintbrush two; 12-compass foot two; 13-compass foot two adapter sleeves; 14-crossfoot two; 15-crossfoot two adapter sleeves.
Detailed description of the invention
Embodiment, with reference to accompanying drawing 1, can be to be provided with main pin taper 8-1 in the lower end of main pin 8 with the compasses of the concentrically ringed compasses of the fixed picture of blackboard, main pin 8 be inserted in the main foot seat taper hole 9-1 of main foot seat 9 by main pin taper 8-1, and the lower end of main foot seat 9 is threaded in the center of base 10.Be provided with main pin handle 1 on the top of main pin 8, main pin handle 1 is made zigzag, be convenient to hold main pin 8, on main pin 8 below main pin handle 1, be flexibly connected crossfoot one adapter sleeve 3, on main pin 8 below crossfoot one adapter sleeve 3, be flexibly connected crossfoot two adapter sleeves 15, on the side of crossfoot one adapter sleeve 3 and crossfoot two adapter sleeves 15, be provided with trip bolt 2.The fixing crossfoot 1 of horizontal direction and crossfoot 2 14 on crossfoot one adapter sleeve 3 and crossfoot two adapter sleeves 15 are flexibly connected compass foot one adapter sleeve 5 and compass foot two adapter sleeves 13 fixing with trip bolt 2 on crossfoot 1 and crossfoot 2 14.Below compass foot one adapter sleeve 5 and compass foot two adapter sleeves 13, fix compass foot 1 and compass foot 2 12 with crossfoot 1 and crossfoot 2 14 vertical direction.In below compass foot 1 and compass foot 2 12, be provided with paintbrush hole 6-1, in the 6-1 of paintbrush hole, fix paintbrush 1 and paintbrush 2 11 with trip bolt 2.
Can be with the using method of the concentrically ringed compasses of the fixed picture of blackboard: the main pin taper 8-1 of main pin 8 lower ends of compasses is inserted in main foot seat taper hole 9-1, main foot seat 9 is threaded fixing with base 10, base 10 is lain against on magnet board, grasp main pin handle 1, by drawn concentric circles size dimension, compass foot 1 and compass foot 2 12 use trip bolts 2 are fixed on crossfoot 1 and crossfoot 2 14, unclamp the trip bolt 2 on crossfoot one adapter sleeve 3 and make its rotating 360 degrees, draw what a circle, use again same method to draw second circle, can on blackboard, finish regular concentric circles.
Claims (1)
- One kind can with the concentrically ringed compasses of the fixed picture of blackboard, comprise main pin (8), main pin handle (1), compass foot one (6), compass foot two (12), trip bolt (2), it is characterized in that being provided with main pin taper (8-1) in the lower end of main pin (8), main pin (8) is inserted into by main pin taper (8-1) in the main foot seat taper hole (9-1) of main foot seat (9), the lower end of main foot seat (9) is threaded in the center of base (10), be provided with main pin handle (1) on the top of main pin (8), upper crossfoot one adapter sleeve (3) that is flexibly connected of main pin (8) below main pin handle (1), upper crossfoot two adapter sleeves (15) that are flexibly connected of main pin (8) below crossfoot one adapter sleeve (3), on the side of crossfoot one adapter sleeve (8) and crossfoot two adapter sleeves (15), be provided with trip bolt (2), at crossfoot one adapter sleeve (3) and the fixing crossfoot one (4) of the upper horizontal direction of crossfoot two adapter sleeves (15) and crossfoot two (14), at crossfoot one (4) and upper compass foot one adapter sleeve (5) and compass foot two adapter sleeves (13) of being flexibly connected of crossfoot two (14), at below and crossfoot one (4) and the fixing compass foot one (6) of crossfoot two (14) vertical direction and the compass foot two (12) of compass foot one adapter sleeve (5) and compass foot two adapter sleeves (13), in the below of compass foot one (6) and compass foot two (12), be provided with paintbrush hole (6-1), in paintbrush hole (6-1), fix paintbrush one (7) and paintbrush two (11) with trip bolt (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420365674.7U CN203974327U (en) | 2014-07-04 | 2014-07-04 | Can with the concentrically ringed compasses of the fixed picture of blackboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420365674.7U CN203974327U (en) | 2014-07-04 | 2014-07-04 | Can with the concentrically ringed compasses of the fixed picture of blackboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203974327U true CN203974327U (en) | 2014-12-03 |
Family
ID=51971809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420365674.7U Expired - Fee Related CN203974327U (en) | 2014-07-04 | 2014-07-04 | Can with the concentrically ringed compasses of the fixed picture of blackboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203974327U (en) |
-
2014
- 2014-07-04 CN CN201420365674.7U patent/CN203974327U/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: 20141203 Termination date: 20150704 |
|
| EXPY | Termination of patent right or utility model |