CN2299724Y - Drawing instrument for use on blackboard - Google Patents
Drawing instrument for use on blackboard Download PDFInfo
- Publication number
- CN2299724Y CN2299724Y CN 97245263 CN97245263U CN2299724Y CN 2299724 Y CN2299724 Y CN 2299724Y CN 97245263 CN97245263 CN 97245263 CN 97245263 U CN97245263 U CN 97245263U CN 2299724 Y CN2299724 Y CN 2299724Y
- Authority
- CN
- China
- Prior art keywords
- head
- utility
- model
- blackboard
- slide rail
- 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 relates to a drawing instrument for use on a blackboard which solves the trouble that the teaching person needs to repeatedly change the drawing tool when the teaching person draws the picture. The utility model is composed of a tension spring, a ruler body, a ruler head, a slide rail, and a movable plate. The ruler body is installed on the ruler head by a rotary shaft. The ruler head is fixed on the movable plate by a screw. The movable plate is vertically installed on a movable head. The movable head is installed on the slide rail, and the ruler body can rotate around the rotary shaft. The utility model has the advantage of simple structure and easy fabrication. The utility model can conveniently, accurately, and rapidly draw up a horizontal line, vertical line, and straight line in any angle at the optional position of the blackboard. The utility model is suitable for the use of all teaching persons who need to draw.
Description
The utility model relates to stationery manufacturing technology field, and exactly it is a kind of Drawing instrument for use on blackboard.
At present, in teaching field, often need on blackboard, map to improve teaching efficiency.When needing to draw in the teaching now, what often use is set square, garden rule, and bevel protractor, rulers etc. when needs are drawn than complex figure, need conversion drawing instrument repeatedly, i.e. trouble, drawing efficiency is low again.
The purpose of this utility model provides a kind of Drawing instrument for use on blackboard that can be contained on any blackboard, and it can be accurately and fast and draws horizontal line, vertical line and arbitrarily angled straight line easily.
The purpose of this utility model is achieved by the following scheme, it is made up of extension spring, blade, chi head, slide rail and portable plate, it is characterized in that: blade (5) is installed on the chi head (7) by rotating shaft (15), chi head (7) is fixed on the portable plate (9) by screw, portable plate (9) is vertically mounted on the movable head (10), and movable head (10) is installed on the slide rail (8).Blade (5) (15) around the shaft rotates.Between movable head (10) and chi head (7), be connected with extension spring (3).Slide rail (8) is a tie formula slide rail.Angle line is carved with on chi head (7) surface.
The utility model has the advantages that, flexible and convenient to use, accurately and fast, the horizontal line that can draw in the optional position of blackboard, vertical line and arbitrarily angled straight line, drawing rule can 360 ° of arbitrarily rotations, avoided the faculty frequently to change the trouble of drawing instrument.
Below in conjunction with drawings and Examples the utility model is done further detailed description.
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is an A-A cutaway view of the present utility model.
Fig. 3 is the left view of Fig. 1.
Schematic diagram when Fig. 4 is contained on the blackboard for the utility model.
1 is pad among the figure, and 2 is screw, and 3 are extension spring, and 4 is tension spring shaft, and 5 is blade, and 6 is wood screw, and 7 is the chi head, and 8 is slide rail, and 9 is portable plate, and 10 is movable head, and 11 is limited post, and 12 is screw, and 13 is screw, and 14 is blackboard, and 15 are rotating shaft.
The utility model is manufactured fairly simple, and the factory that possesses the general machining ability all can make.For satisfying required precision, solve the not straight problem in blackboard top, adopted the tie formula that crossbeam is installed, to guarantee long straight apart from track.Track adopts the aluminium alloy extrusions manufacturing, installs referring to figure (3).Equal buyable of aluminium alloy extrusions, spring, blade and standard component or external coordination are got all the ready shown in the accompanying drawing behind the parts, and assembling gets final product with reference to accompanying drawing.Should notice during installation that slide rail (8) should be straight after installing, can not have any loosening, movable head (10) should be combined as a whole movable head (10), portable plate (9), chi head (7), tension spring shaft (4), extension spring (3) etc. earlier before slide rail (8) is gone up installation, limited post (11) is fixed on slide rail (8) two ends after movable head (10) etc. is installed on the slide rail (8) again.During use, can promote portable plate (9) move left and right like a cork, again by moving up and down chi head (7), horizontal line, vertical line and arbitrarily angled straight line can draw in the optional position of blackboard.There is extension spring to be connected between movable head (10) and the portable plate (9), can make portable plate (9) be close to blackboard, to guarantee drafting accuracy and steady fast moving, simultaneously, blade (5) can lift automatically when not drawing and leave blackboard, so that blade (5) does not produce friction with blackboard during attachable mechanical stage head (7).
Claims (5)
1, Drawing instrument for use on blackboard, it is made up of extension spring, blade, chi head, slide rail and portable plate, it is characterized in that: blade (5) is installed on the chi head (7) by rotating shaft (15), chi head (7) is fixed on the portable plate (9) by screw, portable plate (9) is vertically mounted on the movable head (10), and movable head (10) is installed on the slide rail (8).
2, Drawing instrument for use on blackboard according to claim 1 is characterized in that: blade (5) (15) around the shaft rotates.
3, Drawing instrument for use on blackboard according to claim 1 is characterized in that: be connected with extension spring (3) between movable head (10) and chi head (7).
4, Drawing instrument for use on blackboard according to claim 1 is characterized in that: slide rail (8) is a tie formula slide rail.
5, Drawing instrument for use on blackboard according to claim 1 is characterized in that: angle line is carved with on chi head (7) surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97245263 CN2299724Y (en) | 1997-09-19 | 1997-09-19 | Drawing instrument for use on blackboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97245263 CN2299724Y (en) | 1997-09-19 | 1997-09-19 | Drawing instrument for use on blackboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2299724Y true CN2299724Y (en) | 1998-12-09 |
Family
ID=33953776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97245263 Expired - Fee Related CN2299724Y (en) | 1997-09-19 | 1997-09-19 | Drawing instrument for use on blackboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2299724Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107393373A (en) * | 2017-08-31 | 2017-11-24 | 陈伟景 | A kind of computer assisted instruction equipment easy to use |
| CN110843386A (en) * | 2018-08-20 | 2020-02-28 | 成都济业教学设备有限公司 | T-shaped ruler for teaching |
-
1997
- 1997-09-19 CN CN 97245263 patent/CN2299724Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107393373A (en) * | 2017-08-31 | 2017-11-24 | 陈伟景 | A kind of computer assisted instruction equipment easy to use |
| CN107393373B (en) * | 2017-08-31 | 2019-12-06 | 江苏赛诚极云网络科技有限公司 | convenient to use's computer-aided education equipment |
| CN110843386A (en) * | 2018-08-20 | 2020-02-28 | 成都济业教学设备有限公司 | T-shaped ruler for teaching |
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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 |