CN102825953A - Magnetic compasses - Google Patents
Magnetic compasses Download PDFInfo
- Publication number
- CN102825953A CN102825953A CN2012103453485A CN201210345348A CN102825953A CN 102825953 A CN102825953 A CN 102825953A CN 2012103453485 A CN2012103453485 A CN 2012103453485A CN 201210345348 A CN201210345348 A CN 201210345348A CN 102825953 A CN102825953 A CN 102825953A
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- CN
- China
- Prior art keywords
- compasses
- magnetic
- magnetic compasses
- magnet
- protective sleeve
- 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.)
- Withdrawn
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Abstract
The invention discloses a pair of magnetic compasses, comprising a fixed end and a telescopic compass rod, wherein the fixed end comprises a magnet; the upper part of the magnet is connected with the compass rod by a rotary bearing; meanwhile, the fixed end is externally sheathed with a protecting sleeve; and the other end of the telescopic compass rod is provided with a clamping device. The magnetic compasses disclosed by the invention have the advantages that due to the magnetic design, the magnetic compasses are safer in the use process and are not easy to fall, and due to the protecting sleeve, the comfort in use is increased to a certain extent.
Description
Technical field
The present invention relates to a kind of magnetic compasses.
Background technology
Compasses still owing to the occasion of some characteristics, need the compasses of large-size, the subject matter that flexibility that large-sized compasses use and security become solution as necessary tool in teaching, study, the work.
Summary of the invention
The present invention is directed to the prior art deficiency, magnetic compasses a kind of reasonable in design, safe and practical are provided.
The present invention realizes through following technical scheme:
A kind of magnetic compasses comprise stiff end and flexible compasses bar, and stiff end comprises magnet, and magnet top is connected with the compasses bar through swivel bearing, the outer sheathed protective sleeve of while stiff end, and the other end of flexible compasses bar is provided with clamping device.
Said clamping device comprises clamp nut.
Said protective sleeve is the rubber protective sleeve.
Compared with prior art, beneficial effect of the present invention is: magnetic design, make in the use saferly, and be difficult for dropping, protective sleeve has increased the comfort when using to a certain extent simultaneously.
Description of drawings
Fig. 1 is the topology view of magnetic compasses of the present invention.
Among the figure: 1, protective sleeve; 2, magnet; 3, swivel bearing; 4, flexible compasses bar; 5, clamp nut.
The specific embodiment
When magnetic compasses of the present invention used, compasses were fixed on the blackboard, and swivel bearing is fixed on the magnet; Can be around magnet 360 rotation, flexible compasses bar can own collapsing length; At the expansion link end one hole slot is arranged, hole slot is placed chalk, and the fall clamp nut of flank of sky is fixed chalk.
Claims (3)
1. magnetic compasses, it is characterized in that: comprise stiff end and flexible compasses bar, stiff end comprises magnet, magnet top is connected with the compasses bar through swivel bearing, stiff end sheathed protective sleeve outward simultaneously, the other end of the compasses bar that stretches is provided with clamping device.
2. magnetic compasses according to claim 1, it is characterized in that: said clamping device comprises clamp nut.
3. like the said magnetic compasses of claim 2, it is characterized in that: said protective sleeve is the rubber protective sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103453485A CN102825953A (en) | 2012-09-18 | 2012-09-18 | Magnetic compasses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103453485A CN102825953A (en) | 2012-09-18 | 2012-09-18 | Magnetic compasses |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102825953A true CN102825953A (en) | 2012-12-19 |
Family
ID=47329350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012103453485A Withdrawn CN102825953A (en) | 2012-09-18 | 2012-09-18 | Magnetic compasses |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102825953A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2365077Y (en) * | 1999-04-05 | 2000-02-23 | 顾长永 | Compasses for teaching |
| CN201009595Y (en) * | 2007-03-14 | 2008-01-23 | 缪家栋 | Novel compasses ruler |
| CN201012594Y (en) * | 2007-03-15 | 2008-01-30 | 韩雨桐 | White board compasses |
| US7383635B1 (en) * | 2007-01-23 | 2008-06-10 | Learning Resources, Inc. | Multipurpose drawing tool |
| CN101670736A (en) * | 2008-09-09 | 2010-03-17 | 上海市长宁区少年科技指导站 | multifunctional teaching compasses |
| CN201442454U (en) * | 2008-11-26 | 2010-04-28 | 洪山 | Teaching ruler with magnetic needle |
| CN202130188U (en) * | 2011-06-09 | 2012-02-01 | 富阳市职业高级中学 | Adjustable compass used for metallic blackboard |
| CN202847249U (en) * | 2012-09-18 | 2013-04-03 | 吴江市聚力机械有限公司 | Magnetic compass |
-
2012
- 2012-09-18 CN CN2012103453485A patent/CN102825953A/en not_active Withdrawn
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2365077Y (en) * | 1999-04-05 | 2000-02-23 | 顾长永 | Compasses for teaching |
| US7383635B1 (en) * | 2007-01-23 | 2008-06-10 | Learning Resources, Inc. | Multipurpose drawing tool |
| CN201009595Y (en) * | 2007-03-14 | 2008-01-23 | 缪家栋 | Novel compasses ruler |
| CN201012594Y (en) * | 2007-03-15 | 2008-01-30 | 韩雨桐 | White board compasses |
| CN101670736A (en) * | 2008-09-09 | 2010-03-17 | 上海市长宁区少年科技指导站 | multifunctional teaching compasses |
| CN201442454U (en) * | 2008-11-26 | 2010-04-28 | 洪山 | Teaching ruler with magnetic needle |
| CN202130188U (en) * | 2011-06-09 | 2012-02-01 | 富阳市职业高级中学 | Adjustable compass used for metallic blackboard |
| CN202847249U (en) * | 2012-09-18 | 2013-04-03 | 吴江市聚力机械有限公司 | Magnetic compass |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C04 | Withdrawal of patent application after publication (patent law 2001) | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20121219 |