CN203019912U - Simple compass for teachers - Google Patents
Simple compass for teachers Download PDFInfo
- Publication number
- CN203019912U CN203019912U CN 201320018077 CN201320018077U CN203019912U CN 203019912 U CN203019912 U CN 203019912U CN 201320018077 CN201320018077 CN 201320018077 CN 201320018077 U CN201320018077 U CN 201320018077U CN 203019912 U CN203019912 U CN 203019912U
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- Prior art keywords
- rod
- push
- push rod
- teachers
- compass
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- Expired - Fee Related
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Abstract
The utility model provides a simple compass for teachers. The compass comprises an upper push rod and a lower push rod, which are movably connected through a rotating mechanism, wherein chalk sleeves are movably sleeved on the upper end part of the upper push rod and the lower end part of the lower push rod, the chalk sleeves are tubular, internal threads are uniformly arranged on the inner side walls of the chalk sleeves, and correspondingly, external threads are uniformly arranged on the outer side wall at the upper part of the upper push rod and on the outer side wall at the lower part of the lower push rod. Compared with the prior art, the simple compass for teachers has the characteristics of reasonable design, simple structure and convenience in use, and the like, the compass can be used as a pure chalk sleeve if not being used by the teachers for drawing circles, the adaption range is extensive, the manufacture is simple and the cost is low, so that the simple compass for teachers provided by the utility model has good generalization and application values.
Description
Technical field
The utility model relates to a kind of educational supply, specifically a kind of simple in structure, can draw fast round teacher and use Simple compasses.
Background technology
Compasses are one of instruments indispensable in mathematical education.The teacher of prior art is made by wood materials usually with compasses, and by two rods of a chain connection, wherein a rod can be adjusted around another root rod.At present, under a lot of people's effort, a lot of outstanding technical schemes about compasses appear.But the structure of these compasses is comparatively single, and function is less.
Summary of the invention
Technical assignment of the present utility model is to solve the deficiencies in the prior art, provides a kind of simple in structure, multiple functional teacher to use Simple compasses.
The technical solution of the utility model realizes in the following manner, this a kind of teacher uses Simple compasses, its structure comprises upper push-rod, the lower push-rod that is flexibly connected by rotating mechanism, the upper end of described upper push-rod, the equal movable sleeve in the bottom of lower push-rod are connected to chalk sleeve, described chalk sleeve in a tubular form and evenly be provided with internal thread on its madial wall, corresponding, evenly be provided with external screw thread on the lower outside wall of the upper and lower push rod of upper outside wall of upper push-rod.Chalk is released in the chalk sleeve and just can be realized by the movement of push rod like this.
As preferably, described rotating mechanism comprises spill spin block, swivelling chute and rotating shaft, spill spin block is arranged on the bottom of upper push-rod and is flexibly connected with lower push-rod, swivelling chute is arranged on the upper end of lower push-rod and is used in conjunction with spill spin block, and the two ends that swivelling chute and spill spin block and rotating shaft are sequentially passed in rotating shaft are arranged on the swivelling chute lateral wall.
The beneficial effect that the utility model compared with prior art produces is:
A kind of teacher of the present utility model with Simple compasses have simple in structure, easy to use, be skillfully constructed, the characteristics such as multiple functional, the teacher can use it not drawing bowlder as simple chalk sleeve, applied widely, make simple, with low cost, thereby the utlity model has good popularizing value.
Description of drawings
Accompanying drawing 1 is structural representation of the present utility model.
Mark in accompanying drawing represents respectively:
1, chalk, 2, upper push-rod, 3, rotating shaft, 4, swivelling chute, 5, internal thread, 6, external screw thread, 7, lower push-rod, 8, spill spin block, 9, chalk sleeve.
The specific embodiment
Below in conjunction with accompanying drawing, a kind of teacher of the present utility model is described in detail below with Simple compasses.
As shown in Figure 1, this a kind of teacher uses Simple compasses, its structure comprises upper push-rod 1, the lower push-rod 7 that is flexibly connected by rotating mechanism, the equal movable sleeve in the bottom of the upper end of described upper push-rod 1, lower push-rod 7 is connected to chalk sleeve 9, be fixed with chalk 1 in chalk sleeve 9, described chalk sleeve 9 in a tubular form and evenly be provided with internal thread 5 on its madial wall, and is corresponding, evenly is provided with external screw thread 6 on the lower outside wall of the upper and lower push rod 7 of upper outside wall of upper push-rod 1.Why chalk sleeve 9 being arranged to the structure of internal thread 5 herein, is in order to increase the friction of chalk 1 and chalk sleeve 9 inwall contact portions, guarantee that chalk 1 can not drop out easily in chalk sleeve 9.
Described rotating mechanism comprises spill spin block 8, swivelling chute 4 and rotating shaft 3, spill spin block 8 is arranged on the bottom of upper push-rod 1 and is flexibly connected with lower push-rod 7, swivelling chute 4 is arranged on the upper end of lower push-rod 7 and is used in conjunction with spill spin block 8, and the two ends that rotating shaft 3 orders are passed swivelling chute 4 and spill spin block 8 and rotating shaft 3 are arranged on swivelling chute 4 lateral walls.
By said structure, can realize the rotation of spill spin block 8 in swivelling chute 4, general, spill spin block 8 can be done nearly 360 degree rotations by rotating shaft 3 in swivelling chute, facilitate the teacher to regulate according to actual needs use.
Except the described technical characterictic of specification, be the known technology of those skilled in the art.
Claims (2)
1. a teacher uses Simple compasses, it is characterized in that: its structure comprises upper push-rod, the lower push-rod that is flexibly connected by rotating mechanism, the upper end of described upper push-rod, the equal movable sleeve in the bottom of lower push-rod are connected to chalk sleeve, described chalk sleeve in a tubular form and evenly be provided with internal thread on its madial wall, corresponding, evenly be provided with external screw thread on the lower outside wall of the upper and lower push rod of upper outside wall of upper push-rod.
2. a kind of teacher according to claim 1 uses Simple compasses, it is characterized in that: described rotating mechanism comprises spill spin block, swivelling chute and rotating shaft, spill spin block is arranged on the bottom of upper push-rod and is flexibly connected with lower push-rod, swivelling chute is arranged on the upper end of lower push-rod and is used in conjunction with spill spin block, and the two ends that swivelling chute and spill spin block and rotating shaft are sequentially passed in rotating shaft are arranged on the swivelling chute lateral wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320018077 CN203019912U (en) | 2013-01-14 | 2013-01-14 | Simple compass for teachers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320018077 CN203019912U (en) | 2013-01-14 | 2013-01-14 | Simple compass for teachers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203019912U true CN203019912U (en) | 2013-06-26 |
Family
ID=48643917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320018077 Expired - Fee Related CN203019912U (en) | 2013-01-14 | 2013-01-14 | Simple compass for teachers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203019912U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104228406A (en) * | 2014-08-25 | 2014-12-24 | 苏州市职业大学 | Chalk sleeve for drawing various straight lines and circles |
| CN106274163A (en) * | 2016-08-26 | 2017-01-04 | 四川鸿鑫空间测绘有限公司 | Plotting pen |
-
2013
- 2013-01-14 CN CN 201320018077 patent/CN203019912U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104228406A (en) * | 2014-08-25 | 2014-12-24 | 苏州市职业大学 | Chalk sleeve for drawing various straight lines and circles |
| CN106274163A (en) * | 2016-08-26 | 2017-01-04 | 四川鸿鑫空间测绘有限公司 | Plotting pen |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130626 Termination date: 20140114 |