CN202130188U - Adjustable compass used for metallic blackboard - Google Patents
Adjustable compass used for metallic blackboard Download PDFInfo
- Publication number
- CN202130188U CN202130188U CN201120192306U CN201120192306U CN202130188U CN 202130188 U CN202130188 U CN 202130188U CN 201120192306 U CN201120192306 U CN 201120192306U CN 201120192306 U CN201120192306 U CN 201120192306U CN 202130188 U CN202130188 U CN 202130188U
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- CN
- China
- Prior art keywords
- rotating seat
- chalk
- seat
- blackboard
- centering
- 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
An adjustable compass used for a metallic blackboard belongs to the technical field of teaching compasses and comprises a rotating seat, wherein a telescopic pull pipe is fixedly arranged on a seat body of the rotating seat; a chalk seat is fixedly arranged at the other end of the telescopic pull pipe and used for mounting a chalk; a locating block is fixedly arranged at the bottom of the rotating seat; and a radial bearing used for rotating is arranged between the locating block and the rotating seat in a matched manner. The adjustable compass used for the metallic blackboard has the advantages that the simple is structure, the design is reasonable, the rotating seat and the telescopic pull pipe rotate for drawing a circle under the action of the radial bearing, a centering chalk hole formed on the rotating seat is utilized for centering and the circle drawing and the centering are simple and convenient and easy to control, thereby being suitable for massive popularization and utilization.
Description
Technical field
The utility model belongs to the educational compasses technical field, is specifically related to a kind of adjustable compasses that are used for the metal blackboard.
Background technology
Compasses for teaching still was applicable to the wooden dichotomous compasses of cement blackboard in the market originally.There are drawbacks such as the dressing chalk is difficult, wayward in it, and is fit to the metal blackboard, and main is to feel relieved.
Summary of the invention
To the problem that prior art exists, the purpose of the utility model is to design a kind of technical scheme that is used for the adjustable compasses of metal blackboard is provided.
Described a kind of adjustable compasses that are used for the metal blackboard; It is characterized in that comprising rotating seat; Fixedly install flexible trombone slide on the pedestal of described rotating seat; The other end of flexible trombone slide fixedly installs the chalk seat that is used to install chalk, and described rotating seat bottom fixedly installs locating piece, is equipped with the radial bearing that is used to rotate between locating piece and the rotating seat.
Described a kind of adjustable compasses that are used for the metal blackboard is characterized in that described rotating seat center is provided with centering chalk hole.
Described a kind of adjustable compasses that are used for the metal blackboard is characterized in that described flexible trombone slide surface is provided with the adjusting scale.
Described a kind of adjustable compasses that are used for the metal blackboard is characterized in that being provided with in the described chalk seat picture circle chalk hole.
Described a kind of adjustable compasses that are used for the metal blackboard is characterized in that described locating piece bottom fixedly installs magnet.
Above-mentioned a kind of adjustable compasses that are used for the metal blackboard; Simple in structure, reasonable in design, utilize the effect of radial bearing to make rotating seat and flexible trombone slide be rotated the picture circle; And utilize the centering chalk hole that is arranged on the rotating seat to feel relieved; Picture is round, centering is simple and convenient, is easy to control, is fit to large-scale utilization and extention.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the cutaway view of the utility model.
Among the figure: the 1-rotating seat; The 2-radial bearing; The 3-locating piece; 4-magnet; The 5-trombone slide that stretches; 6-chalk seat; 7-centering chalk hole; 8-draws circle chalk hole.
The specific embodiment
Further specify the utility model below in conjunction with Figure of description.
As shown in the figure, a kind of adjustable compasses that are used for the metal blackboard comprise rotating seat 1, and rotating seat 1 center is provided with the centering chalk hole 7 that is used to install the centering chalk.Fixedly install flexible trombone slide 5 on the pedestal of rotating seat 1, flexible trombone slide 5 scalable adjusting length, thereby the size of control circular diameter in order to improve accuracy, are provided with scale on the surface of flexible trombone slide 5.The other end of flexible trombone slide 5 has fixedly installed chalk seat 6, and chalk seat 6 is installed picture circle chalk through the picture circle chalk hole 8 that is provided with above that.
The bottom of rotating seat 1 fixedly installs locating piece 3, has been equipped with radial bearing 2 between locating piece 3 and the rotating seat 1, and the rotating seat 1 that is arranged so that of radial bearing 2 can be rotated.In order these compasses to have been fixedly installed magnet 4 in the bottom of locating piece 3 at metal blackboard upper drawing circle.
Draw bowlder, the part of will feeling relieved earlier is placed on the home position of blackboard, the centering 7 aligning centers of circle, chalk hole; Chalk inserts in the picture circle chalk hole 8; Adjust required radius of a circle by scale again, rotating seat 1 is rotated, just can justify with the drawing with coloured chalk in the picture circle chalk hole 8.What do not have a center of circle can be after painting circle, with chalk center of circle on 7 in the chalk hole of feeling relieved.
Shown in the above and the figure only is the preferred implementation of the utility model.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the utility model principle, can also make some modification and improvement, these also should be regarded as belonging to the protection domain of the utility model.
Claims (5)
1. adjustable compasses that are used for the metal blackboard; It is characterized in that comprising rotating seat (1); Fixedly install flexible trombone slide (5) on the pedestal of described rotating seat (1); The other end of flexible trombone slide (5) fixedly installs the chalk seat (6) that is used to install chalk, and described rotating seat (1) bottom fixedly installs locating piece (3), is equipped with the radial bearing (2) that is used to rotate between locating piece (3) and the rotating seat (1).
2. a kind of adjustable compasses that are used for the metal blackboard as claimed in claim 1 is characterized in that described rotating seat (1) center is provided with centering chalk hole (7).
3. a kind of adjustable compasses that are used for the metal blackboard as claimed in claim 1 is characterized in that described flexible trombone slide (5) surface is provided with the adjusting scale.
4. a kind of adjustable compasses that are used for the metal blackboard as claimed in claim 1 is characterized in that being provided with in the described chalk seat (6) picture circle chalk hole (8).
5. a kind of adjustable compasses that are used for the metal blackboard as claimed in claim 1 is characterized in that described locating piece (3) bottom fixedly installs magnet (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120192306U CN202130188U (en) | 2011-06-09 | 2011-06-09 | Adjustable compass used for metallic blackboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120192306U CN202130188U (en) | 2011-06-09 | 2011-06-09 | Adjustable compass used for metallic blackboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202130188U true CN202130188U (en) | 2012-02-01 |
Family
ID=45518970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120192306U Expired - Fee Related CN202130188U (en) | 2011-06-09 | 2011-06-09 | Adjustable compass used for metallic blackboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202130188U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102825953A (en) * | 2012-09-18 | 2012-12-19 | 吴江市聚力机械有限公司 | Magnetic compasses |
| CN103072410A (en) * | 2013-02-04 | 2013-05-01 | 李香秀 | Manual type large circle drawing device |
-
2011
- 2011-06-09 CN CN201120192306U patent/CN202130188U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102825953A (en) * | 2012-09-18 | 2012-12-19 | 吴江市聚力机械有限公司 | Magnetic compasses |
| CN103072410A (en) * | 2013-02-04 | 2013-05-01 | 李香秀 | Manual type large circle drawing device |
| CN103072410B (en) * | 2013-02-04 | 2015-09-09 | 慈溪市附海大奇电器厂 | A kind of hand draws Large circular coil apparatus |
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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: 20120201 Termination date: 20140609 |