CN2314950Y - Suction disc type convenient compasses - Google Patents
Suction disc type convenient compasses Download PDFInfo
- Publication number
- CN2314950Y CN2314950Y CN 98200819 CN98200819U CN2314950Y CN 2314950 Y CN2314950 Y CN 2314950Y CN 98200819 CN98200819 CN 98200819 CN 98200819 U CN98200819 U CN 98200819U CN 2314950 Y CN2314950 Y CN 2314950Y
- Authority
- CN
- China
- Prior art keywords
- chalk
- radius
- adjusting rod
- screw
- dop
- 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 relates to a pair of suction disc type convenient compasses used on a glass blackboard, which uses a suction disc to position the centre of a circle. The suction disc is connected with a connecting sleeve which is connected with a radius regulating rod. The other end of the radius regulating rod is connected with a chalk clamp mouth. Therefore, the drawing of circles or circular arcs on the glass blackboard can be realized. The radius of a circle can be adjusted via a butterfly nut of the radius regulating rod. The position of the chalk clamp mouth can be adjusted by a butterfly nut arranged at the other end of the radius regulating rod. The utility model has the advantages of simple structure, portability and convenient use. A user can draw the circle with comparatively accurate radius on the glass blackboard by one hand.
Description
The utility model relates to a kind of compasses of teaching, the compasses that especially use on Glass blackboard.
At present, known compasses for teaching, be compasses promptly: a pin is the iron point, another pin dress chalk.Draw circle with the centering of iron point, still, present most of school Glass blackboard uses this compasses very difficult, causes certain trouble to teaching.
The purpose of this utility model provides a kind of compasses of the usefulness of imparting knowledge to students, and it can not only use on Glass blackboard, and can draw easily radius circle or circular arc comparatively accurately.
The purpose of this utility model is achieved in that the stiff end of sucker inserts in the through hole of bottom, adapter sleeve lower end, inserts in the sucker stiff end diametric(al) through hole with bearing pin, achieves a fixed connection.Fixedlying connected left fixed head with holding screw in the adapter sleeve upper end with right fixed head, forms circular hole and be connected with rotating shaft lower end matched in clearance, and rotating shaft can only be rotated.Rotating shaft upper end and radius adjusting rod screw, packing ring is connected with wing nut, behind the adjusting wing nut, can regulate drawn circle or arc radius size along the microscler chute on the radius adjusting rod according to the scale on the radius adjusting rod.At radius adjusting rod other end screw, packing ring is connected with chalk dop upper end with wing nut, behind the adjusting wing nut, the chalk dop is moved up and down along the chute of its upper end, regulates the position that is fit to.On the conical outer wall of chalk dop lower end a collar is arranged, the taper sheath upper edge generatrix direction of chalk dop has three pods, and when collar moved down, chalk dop taper sheath diameter of section changed, thereby clamps chalk.
Owing to adopt such scheme, on Glass blackboard, use these compasses, easy to use, hand of user just can be drawn circle, and the radius that can draw is round more accurately.These compasses are simple in structure, and are easy to carry.
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is a structural representation of the present utility model.
Among Fig. 11, radius adjusting rod 2, left fixed head 3, rotating shaft 4, holding screw 5, right fixed head 6, chalk dop 7, collar 8, adapter sleeve 9, bearing pin 10, sucker 11, packing ring 12, screw 13, wing nut 14, packing ring 15, screw 16, wing nut
This compasses sucker (10) stiff end inserts in adapter sleeve (8) base apertures, and bearing pin (9) is inserted in the diametric through hole of sucker (10) in adapter sleeve (8) two bottom sides hole, and sucker (10) is fixedlyed connected with adapter sleeve (8).Fixedlying connected left fixed head (2) with holding screw (4) in adapter sleeve (8) upper end with right fixed head (5), and forms circular hole, and this hole is connected with rotating shaft (3) bottom diameter of axle matched in clearance, and rotating shaft (3) can only be rotated, and has limited moving axially.Rotating shaft (3) upper end and radius adjusting rod (1) screw (12), packing ring (11) is connected with wing nut (13), after regulating wing nut (13), can be according to the scale on the radius adjusting rod (1), move along the microscler chute on the radius adjusting rod (1), regulate the drawn circle or the radius size of circular arc.At radius adjusting rod (1) other end screw (15), packing ring (14) is connected with chalk dop (6) upper end with wing nut (16), behind the adjusting wing nut (16), can make chalk dop (6) move position up and down along the microscler chute on it.Overlapping collar (7) on the conical outer wall of chalk dop (6) lower end, the taper sheath of chalk dop (6) has three pods along generatrix direction, and when collar (7) when moving down, the taper sheath diameter of section of chalk dop (6) changes, thereby clamps chalk.
Claims (3)
1, a kind of sucked type Convenient compasses, on chalk dop conical outer wall, connecting collar, chalk dop upper end is connected with the radius adjusting rod with screw, it is characterized in that: sucker is connected with the adapter sleeve lower end with bearing pin, fixedly connected with left fixed head with right fixed head with holding screw in the adapter sleeve upper end, form circular hole and is connected, be connected with screw with the radius adjusting rod on the rotating shaft with rotating shaft bottom matched in clearance.
2, according to the described sucked type Convenient compasses of claim 1, it is characterized in that: rotating shaft is connected with screw, packing ring and wing nut with the radius adjusting rod, is provided with scale and microscler chute on the radius adjusting rod.
3, it is characterized in that according to the described sucked type Convenient compasses of claim 1: chalk dop upper end and radius adjusting rod screw, packing ring is connected with wing nut, is provided with microscler chute in chalk dop upper end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98200819 CN2314950Y (en) | 1998-01-26 | 1998-01-26 | Suction disc type convenient compasses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98200819 CN2314950Y (en) | 1998-01-26 | 1998-01-26 | Suction disc type convenient compasses |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2314950Y true CN2314950Y (en) | 1999-04-21 |
Family
ID=33958263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98200819 Expired - Fee Related CN2314950Y (en) | 1998-01-26 | 1998-01-26 | Suction disc type convenient compasses |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2314950Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106515276A (en) * | 2016-12-12 | 2017-03-22 | 方建霞 | Portable intelligent teaching tool |
| CN106864121A (en) * | 2017-03-15 | 2017-06-20 | 李路平 | A kind of mathematical education teaching aid |
| CN108376508A (en) * | 2018-04-02 | 2018-08-07 | 安徽沃屹智能装备有限公司 | A kind of multifunction teaching kind of drive simulator |
| CN110654146A (en) * | 2019-09-29 | 2020-01-07 | 黑龙江科技大学 | A multi-functional teaching aid for mathematical education usefulness |
| CN111301032A (en) * | 2020-03-27 | 2020-06-19 | 西安石油大学 | Compasses device |
-
1998
- 1998-01-26 CN CN 98200819 patent/CN2314950Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106515276A (en) * | 2016-12-12 | 2017-03-22 | 方建霞 | Portable intelligent teaching tool |
| CN106515276B (en) * | 2016-12-12 | 2018-07-20 | 方建霞 | A kind of Portable intelligent teaching aid |
| CN106864121A (en) * | 2017-03-15 | 2017-06-20 | 李路平 | A kind of mathematical education teaching aid |
| CN108376508A (en) * | 2018-04-02 | 2018-08-07 | 安徽沃屹智能装备有限公司 | A kind of multifunction teaching kind of drive simulator |
| CN110654146A (en) * | 2019-09-29 | 2020-01-07 | 黑龙江科技大学 | A multi-functional teaching aid for mathematical education usefulness |
| CN111301032A (en) * | 2020-03-27 | 2020-06-19 | 西安石油大学 | Compasses device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |