CN203198519U - Magnetic attraction compasses for teaching - Google Patents
Magnetic attraction compasses for teaching Download PDFInfo
- Publication number
- CN203198519U CN203198519U CN 201320202699 CN201320202699U CN203198519U CN 203198519 U CN203198519 U CN 203198519U CN 201320202699 CN201320202699 CN 201320202699 CN 201320202699 U CN201320202699 U CN 201320202699U CN 203198519 U CN203198519 U CN 203198519U
- Authority
- CN
- China
- Prior art keywords
- chalk
- blackboard
- clamping sleeve
- magnetic attraction
- compasses
- 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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- Drawing Aids And Blackboards (AREA)
Abstract
The utility model discloses a pair of magnetic attraction compasses for teaching. The magnetic attraction compasses are matched with an iron plate for use, wherein the iron plate is installed behind a blackboard. The magnetic attraction compasses comprise a positioning magnet attraction base. A supporting shaft is arranged on the positioning magnet attraction base. A rotating lantern ring is connected to the supporting shaft in a rotary mode. A stop bolt for restraining the rotating lantern ring on the supporting shaft is arranged on the supporting shaft. A movable range pole is connected to the rotating lantern ring. A vernier ring is arranged on the movable range pole in a sliding mode. A chalk clamping sleeve is connected to the vernier ring. A piece of chalk is movably inserted in the chalk clamping sleeve. A chalk fastening device is arranged on the chalk clamping sleeve. The iron plate is firstly arranged behind the blackboard. When the magnetic attraction compasses are placed on the blackboard, the positioning magnet attraction base is attracted on the blackboard through magnetic attraction force between the positioning magnet attraction base and the iron plate, and a circle can be rapidly drawn through the chalk inside the chalk clamping sleeve. The magnetic attraction compasses for teaching can be firmly attracted on the blackboard through the magnetic attraction force, not prone to sliding and simple and convenient to use, enables the circle to be rapidly drawn, and saves valuable teaching time.
Description
Technical field
The utility model relates to a kind of teaching aid, relates in particular to a kind of compasses for teaching.
Background technology
In teaching process, usually need to draw at blackboard, when especially drawing circle, there is the problem that is not easy to fix in the teaching aid that uses at present, some teaching aids adopt sucker structure now, in order in use teaching aid is absorbed and fixed on the blackboard, but this structure fixed effect is undesirable, its main cause is, when making blackboard, in order to make the word that can both see clearly in the every nook and cranny in classroom on the blackboard, and blackboard surface mill is coarse, impel the light diffuse reflection that shines on the blackboard, the blackboard rough surface is unfavorable for sucker absorption, teaching aid can not be fixed on the blackboard by sucker like this.
The utility model content
Technical problem to be solved in the utility model provides a kind of can being adsorbed on securely on the blackboard by magnetic attraction, is difficult for sliding, and is easy to use, can make circle by rapid drawing, saved the magnetic adsorption type compasses for teaching of valuable instructional blocks of time.
For solving the problems of the technologies described above, the technical solution of the utility model is: the magnetic adsorption type compasses for teaching, be used in conjunction with the iron plate that is installed in behind the blackboard, comprise the phase magnet suction base, described phase magnet suction base is provided with back shaft, described back shaft is rotatably connected to rotational lantern ring, described back shaft is provided with described rotational lantern ring is constrained in backstop bolt on the described back shaft, described rotational lantern ring is connected with movable mark post, slide on the described movable mark post and be provided with the vernier ring, described vernier ring is connected with chalk clamping sleeve, and activity is inserted with chalk in the described chalk clamping sleeve, and described chalk clamping sleeve is provided with the chalk fastener.
As preferred technical scheme, described chalk fastener comprises the fastening bolt that passes described chalk clamping sleeve, and described fastening bolt cooperation is provided with clamp nut.
As to improvement of the technical scheme, described movable mark post is provided with scale markings.
Owing to having adopted technique scheme, the magnetic adsorption type compasses for teaching, be used in conjunction with the iron plate that is installed in behind the blackboard, comprise the phase magnet suction base, described phase magnet suction base is provided with back shaft, described back shaft is rotatably connected to rotational lantern ring, described back shaft is provided with described rotational lantern ring is constrained in backstop bolt on the described back shaft, described rotational lantern ring is connected with movable mark post, slide on the described movable mark post and be provided with the vernier ring, described vernier ring is connected with chalk clamping sleeve, and activity is inserted with chalk in the described chalk clamping sleeve, and described chalk clamping sleeve is provided with the chalk fastener.At first be provided with iron plate in the blackboard back, when this teaching aid is placed on the blackboard, described phase magnet suction base is adsorbed on the blackboard by the magnetic attraction with described iron plate, then described movable mark post is rotated around described back shaft, described chalk in the described chalk clamping sleeve will be justified drafting out fast, can the position of the described vernier ring of activity adjustment on described movable mark post, the circle that obtains differing in size.The utility model can be adsorbed on the blackboard securely by magnetic attraction, is difficult for sliding, and is easy to use, can make circle by rapid drawing, saved valuable instructional blocks of time.
Description of drawings
The following drawings only is intended to the utility model done and schematically illustrates and explain, does not limit scope of the present utility model.Wherein:
Fig. 1 is the structural representation of the utility model embodiment;
Fig. 2 is the upward view of the utility model embodiment.
Among the figure: 1-phase magnet suction base; The 2-back shaft; The 3-rotational lantern ring; 4-backstop bolt; The movable mark post of 5-; 6-vernier ring; The 7-chalk clamping sleeve; The 8-chalk; 9-chalk fastener.
The specific embodiment
Below in conjunction with drawings and Examples, further set forth the utility model.In the following detailed description, only by the mode of explanation some example embodiment of the present utility model has been described.Undoubtedly, those of ordinary skill in the art can recognize, in the situation that do not depart from spirit and scope of the present utility model, can revise described embodiment with various mode.Therefore, accompanying drawing is illustrative with being described in essence, rather than is used for the protection domain of restriction claim.
As depicted in figs. 1 and 2, the magnetic adsorption type compasses for teaching, be used in conjunction with the iron plate that is installed in behind the blackboard, comprise phase magnet suction base 1, described phase magnet suction base 1 is provided with back shaft 2, described back shaft 2 is rotatably connected to rotational lantern ring 3, described back shaft 2 is provided with described rotational lantern ring 3 is constrained in backstop bolt 4 on the described back shaft 2, described rotational lantern ring 3 is connected with movable mark post 5, slide on the described movable mark post 5 and be provided with vernier ring 6, described vernier ring 6 is connected with chalk clamping sleeve 7, and described chalk clamping sleeve 7 interior activities are inserted with chalk 8, and described chalk clamping sleeve 7 is provided with chalk fastener 9.At first be provided with iron plate in the blackboard back, when this teaching aid is placed on the blackboard, described phase magnet suction base 1 is adsorbed on the blackboard by the magnetic attraction with described iron plate, then described movable mark post 5 is rotated around described back shaft 2, described chalk 8 in the described chalk clamping sleeve 7 will be justified drafting out fast, can the position of the described vernier ring 6 of activity adjustment on described movable mark post 5, the circle that obtains differing in size.The present embodiment can be adsorbed on the blackboard securely by magnetic attraction, is difficult for sliding, and is easy to use, can make circle by rapid drawing, saved valuable instructional blocks of time.
Described chalk fastener 9 comprises the fastening bolt that passes described chalk clamping sleeve 7, and described fastening bolt cooperation is provided with clamp nut.Said structure is convenient to change described chalk 8, also prevents simultaneously in the teaching drawing course, and described chalk 8 is fixed insecure, and impact is drawn, the waste instructional blocks of time.
Described movable mark post 5 is provided with scale markings, is convenient to the circle that the accurate Drawing size does not wait, and is simple to operation.
Above demonstration and described basic principle of the present utility model, principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that describes in above-described embodiment and the specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (3)
1. magnetic adsorption type compasses for teaching, be used in conjunction with the iron plate that is installed in behind the blackboard, it is characterized in that: comprise the phase magnet suction base, described phase magnet suction base is provided with back shaft, described back shaft is rotatably connected to rotational lantern ring, described back shaft is provided with described rotational lantern ring is constrained in backstop bolt on the described back shaft, described rotational lantern ring is connected with movable mark post, slide on the described movable mark post and be provided with the vernier ring, described vernier ring is connected with chalk clamping sleeve, activity is inserted with chalk in the described chalk clamping sleeve, and described chalk clamping sleeve is provided with the chalk fastener.
2. magnetic adsorption type compasses for teaching as claimed in claim 1, it is characterized in that: described chalk fastener comprises the fastening bolt that passes described chalk clamping sleeve, described fastening bolt cooperates and is provided with clamp nut.
3. magnetic adsorption type compasses for teaching as claimed in claim 1 or 2, it is characterized in that: described movable mark post is provided with scale markings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320202699 CN203198519U (en) | 2013-04-22 | 2013-04-22 | Magnetic attraction compasses for teaching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320202699 CN203198519U (en) | 2013-04-22 | 2013-04-22 | Magnetic attraction compasses for teaching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203198519U true CN203198519U (en) | 2013-09-18 |
Family
ID=49142656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320202699 Expired - Fee Related CN203198519U (en) | 2013-04-22 | 2013-04-22 | Magnetic attraction compasses for teaching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203198519U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106626906A (en) * | 2016-12-30 | 2017-05-10 | 徐书晗 | Multi-fixed-point compass assembly for teaching |
-
2013
- 2013-04-22 CN CN 201320202699 patent/CN203198519U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106626906A (en) * | 2016-12-30 | 2017-05-10 | 徐书晗 | Multi-fixed-point compass assembly for teaching |
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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: 20130918 Termination date: 20140422 |