CN203534374U - Protractor - Google Patents
Protractor Download PDFInfo
- Publication number
- CN203534374U CN203534374U CN201320726959.4U CN201320726959U CN203534374U CN 203534374 U CN203534374 U CN 203534374U CN 201320726959 U CN201320726959 U CN 201320726959U CN 203534374 U CN203534374 U CN 203534374U
- Authority
- CN
- China
- Prior art keywords
- protractor
- indicator stem
- ring body
- scale ring
- leveling board
- 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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- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
The utility model discloses a protractor. The protractor body comprises a scale annular body and a horizontal plate. The horizontal plate and the scale annular body enclose a semicircular indication space. The upper middle position of the horizontal plate is provided with a hinge lug, and an indication rod is hinged onto the hinge lug. The inner side of the scale annular body is provided with a slide groove with an opening directed toward the indication space and in the shape of a semicircle, the upper end of the indication rod is disposed in the slide groove, the surface, which is corresponding to the slide groove, of the scale annular body is provided with a slide groove hole, the indication rod is fixedly connected to a slide rod extending out of the slide groove hole, and the outer surface of the extension-out section of the slide rod is provided with external screw threads and a wing nut in a threaded way. When the protractor is used, a user grabs a handle by one hand, and rotates the slide rod by the other hand to drive the indication rod to rotate, after rotation to a required angle, the user fastens the wing nut, and then line-drawing along the indication rod is enabled. A teacher can conveniently draw different angles, and angle-drawing steps are simplified. The protractor is also advantageous in that, via rotation of the indication rod, the angle can be quickly measured, and since the end part of the indication rod is in a conical shape, reading is convenient and accurate.
Description
Technical field
The utility model relates to a kind of protractor.
Background technology
Teacher often need to draw the angle of various angles in teaching process on blackboard, with set square, can draw easily at present the angle of 30 °, 45 ° and 60 °, but while drawing the angle of other angles, need to be with set square first at black lining out, re-use protractor and on blackboard, determine the position on another limit, finally with set square by 2 connections, in the process of giving lessons, need constantly to convert educational aid, lose time, and increase teacher's working strength.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of protractor.
For solving the problems of the technologies described above, the utility model comprises protractor body, it is characterized in that described protractor body comprises semicircular scale ring body and the leveling board being connected with two ends, scale ring body bottom, leveling board and scale ring body surround semicircular indication space, on the surface of described scale ring body and leveling board, be equipped with scale mark, described leveling board upper middle position is provided with hinge dress ear seat, on hinge dress ear seat, be hinged with indicator stem, described scale ring body inner side is provided with opening towards the sliding tray of the semicircular in shape in indication space, the upper-end part of driving of described indicator stem is in sliding tray, the corresponding sliding tray in described calibration loop surface is provided with slip slotted eye, on indicator stem, be connected with the sliding bar that stretches out slip slotted eye, sliding bar is provided with external thread and is screwed with wing nut at the outside surface of its section of stretching out.
The corresponding sliding tray in left side of described scale ring body is offered indicator stem plug-in opening.
The top of described indicator stem is taper, and the outside surface on indicator stem top is coated with the pigment of color clear.
Described indicator stem is provided with scale mark.
Described scale ring body, leveling board and indicator stem are made by transparent resin, and the scale mark on described scale ring body, leveling board and indicator stem is by its surface, groove being set, and the pigment that applies color clear in groove forms.
The middle part of described scale ring body and the middle part of leveling board are connected with web joint, and the surface of web joint is provided with handle.
Level indicating device is installed on described web joint, and level indicating device is positioned at the top of handle.
Described level indicating device is air level.
Described indicator stem is provided with two side by side, and described scale ring body respectively corresponding indicator stem is provided with two sliding trays.
Adopt after said structure, during use, a hand is caught handle, thereby another hand rotates sliding bar drives indicator stem to rotate, and while turning to required angle, wing nut is tightened, can be along indicator stem setting-out, teacher can draw the angle of various angles easily, and has simplified the step of drawing angle.The simultaneously rotation of the utility model by indicator stem be the angle of measured angular fast, because the end of indicator stem is tapered, and convenient reading, accurate.
Accompanying drawing explanation
Below in conjunction with the drawings and the specific embodiments, the utility model is described in further detail:
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation that Fig. 1 analyses and observe along A-A line;
Fig. 3 is the second embodiment of the present utility model;
Fig. 4 is the structural representation that Fig. 3 analyses and observe along B-B line.
Embodiment
As depicted in figs. 1 and 2, protractor comprises protractor body, protractor body comprises semicircular scale ring body 1 and the leveling board 2 being connected with scale ring body 1 two ends, bottom, leveling board 2 surrounds semicircular indication space with scale ring body 1, on the surface of scale ring body 1 and leveling board 2, be equipped with scale mark 3, leveling board 2 upper middle position are provided with the hinge dress ear seat 4 of stretching, on hinge dress ear seat 4, by bearing pin 14, be hinged with indicator stem 5, bearing pin 14 center overlaps with the center of circle of scale ring body 1, guarantees indicator stem 5 indications accurately.Scale ring body 1 inner side is provided with opening towards the sliding tray 6 of the semicircular in shape in indication space, the upper-end part of driving of indicator stem 5 is in sliding tray 6, the surperficial corresponding sliding tray 6 of scale ring body 1 is provided with slip slotted eye 7, on indicator stem 5, be connected with the sliding bar 8 that stretches out slip slotted eye 7, sliding bar 8 is provided with external thread and is screwed with wing nut 9 at the outside surface of its section of stretching out.For convenience of assembling of the present utility model, in the left side of scale ring body 1, corresponding sliding tray 6 places offer indicator stem plug-in opening 10.The top of indicator stem 5 is taper, and the outside surface on indicator stem 5 tops is coated with the pigment of color clear, is convenient to user's Rapid reading.Indicator stem 5 is provided with scale mark 3.
More convenient for the utility model is used, the middle part of the middle part of scale ring body 1 and leveling board 2 is connected with web joint 11, and the surface of web joint 11 is provided with handle 13.Level indicating device 12 is installed on web joint 11, and level indicating device 12 is positioned at the top of handle 13.In the present embodiment, level indicating device 12 is air level.Scale ring body 1, leveling board 2, indicator stem 5 and web joint 11 are made by transparent resin, scale mark 3 on scale ring body 1, leveling board 2 and indicator stem 5 is by arranging groove on its surface, and the pigment that applies color clear in groove forms, such as white, red or green.
As shown in Figure 3 and Figure 4, in the present embodiment, indicator stem 5 is provided with two side by side, scale ring body 1 respectively corresponding indicator stem 5 is provided with two sliding trays 6, on scale ring body 1 between two sliding trays 6, corresponding basal sliding groove 6 is provided with slip slotted eye 7, and the sliding bar 8 on the indicator stem 5 bottom making is extended scale ring body 1 surface also.By two indicator stems 5 are set, can measure simultaneously, indicate different angles, to student, bring more intuitive impression, be more conducive to teaching.Other structures of the present embodiment are identical with previous embodiment, do not repeat them here.
During assembling, the upper end of indicator stem 5 is snapped in sliding tray 6 from indicator stem plug-in opening 10, by sliding bar 8 from slip slotted eye 7 stretch out and on the section of stretching out spiral shell dress wing nut 9, the bottom of sliding bar 8 is hinged with hinge dress ear seat 4, complete assembling of the present utility model.During use, a hand is caught handle 13, thereby another hand rotates sliding bar 8, drives indicator stem 5 to rotate, and while turning to required angle, wing nut 9 is tightened, and can, along indicator stem 5 setting-outs, simplify the step of drawing angle.The simultaneously rotation of the utility model by indicator stem 5 be the angle of measured angular fast, because the end of indicator stem 5 is tapered, and convenient reading, accurate.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model.Previous embodiment has been described in detail the utility model, and for a person skilled in the art, its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement.In every case within inventive concept scope of the present utility model, any modification of making, be equal to replacement, improvement etc., within being all included in protection domain of the present utility model.
Claims (9)
1. a protractor, comprise protractor body, it is characterized in that described protractor body comprises semicircular scale ring body and the leveling board being connected with two ends, scale ring body bottom, leveling board and scale ring body surround semicircular indication space, on the surface of described scale ring body and leveling board, be equipped with scale mark, described leveling board upper middle position is provided with hinge dress ear seat, on hinge dress ear seat, be hinged with indicator stem, described scale ring body inner side is provided with opening towards the sliding tray of the semicircular in shape in indication space, the upper-end part of driving of described indicator stem is in sliding tray, the corresponding sliding tray in described calibration loop surface is provided with slip slotted eye, on indicator stem, be connected with the sliding bar that stretches out slip slotted eye, sliding bar is provided with external thread and is screwed with wing nut at the outside surface of its section of stretching out.
2. protractor according to claim 1, is characterized in that the corresponding sliding tray in left side of described scale ring body is offered indicator stem plug-in opening.
3. protractor according to claim 1, is characterized in that the top of described indicator stem is taper, and the outside surface on indicator stem top is coated with the pigment of color clear.
4. protractor according to claim 1, is characterized in that described indicator stem is provided with scale mark.
5. according to the protractor described in claim 1 to 4 any one, it is characterized in that described scale ring body, leveling board and indicator stem make by transparent resin, scale mark on described scale ring body, leveling board and indicator stem is by its surface, groove being set, and the pigment that applies color clear in groove forms.
6. protractor according to claim 5, is characterized in that the middle part of described scale ring body and the middle part of leveling board are connected with web joint, and the surface of web joint is provided with handle.
7. protractor according to claim 6, is characterized in that, on described web joint, level indicating device is installed, and level indicating device is positioned at the top of handle.
8. protractor according to claim 7, is characterized in that described level indicating device is air level.
9. protractor according to claim 1, is characterized in that described indicator stem is provided with two side by side, and described scale ring body respectively corresponding indicator stem is provided with two sliding trays.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320726959.4U CN203534374U (en) | 2013-11-18 | 2013-11-18 | Protractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320726959.4U CN203534374U (en) | 2013-11-18 | 2013-11-18 | Protractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203534374U true CN203534374U (en) | 2014-04-09 |
Family
ID=50420569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320726959.4U Expired - Fee Related CN203534374U (en) | 2013-11-18 | 2013-11-18 | Protractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203534374U (en) |
-
2013
- 2013-11-18 CN CN201320726959.4U patent/CN203534374U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140409 Termination date: 20141118 |
|
| EXPY | Termination of patent right or utility model |