CN203888466U - Rotatable straight ruler - Google Patents

Rotatable straight ruler Download PDF

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Publication number
CN203888466U
CN203888466U CN201420299859.2U CN201420299859U CN203888466U CN 203888466 U CN203888466 U CN 203888466U CN 201420299859 U CN201420299859 U CN 201420299859U CN 203888466 U CN203888466 U CN 203888466U
Authority
CN
China
Prior art keywords
rotation
rotating
ruler
flat thin
chi
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
Application number
CN201420299859.2U
Other languages
Chinese (zh)
Inventor
徐家晓
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ningbo Polytechnic
Original Assignee
Ningbo Polytechnic
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ningbo Polytechnic filed Critical Ningbo Polytechnic
Priority to CN201420299859.2U priority Critical patent/CN203888466U/en
Application granted granted Critical
Publication of CN203888466U publication Critical patent/CN203888466U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model relates to a rotatable straight ruler which comprises magnet pieces, rotating buttons, a main ruler body and rotating ruler bodies. The two ends of the main ruler body are connected with the two rotating ruler bodies through rotating buttons at the two ends of the main ruler body, the magnet pieces are arranged at the ends of the rotating ruler bodies respectively, the two magnet pieces rotate around the rotating buttons and are connected in an attraction mode, and circular dials are arranged on the rotating buttons and are used for displaying the rotating angles of the rotating ruler bodies. The rotatable straight ruler can draw an isosceles right triangle, the straight line, the circular arc and the included angle with degrees according to teaching needs, and is simple in design, easy and convenient to operate and suitable for common daily teaching requirements of teaching workers.

Description

A kind of rotary type ruler
Technical field
The utility model belongs to rotary ruler combination field, particularly a kind of rotary type ruler.
Background technology
At present, students is when carrying out construction with ruler and compasses, always take out a lot of rulers, seeming, desktop is in a mess, and this money rotary type ruler, main scale two ends connect two rotation chis by rotary knob, and two rotation chis are rotated around rotary knob, by the flat thin magnet on rotation ruler end part, two rotation chis are fixed together, now two are rotated chi and the synthetic isosceles right triangle of main scale.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of rotary type ruler, can draw isosceles right triangle, straight line, circular arc and have the angle of the number of degrees according to teaching demand, simplicity of design, easy and simple to handle, be applicable to the general daily teaching demand of teaching person.
The utility model solves the technical scheme that its technical problem adopts: a kind of rotary type ruler is provided, comprise flat thin magnet, rotary knob, main scale and rotation chi, the two ends of described main scale connect two rotation chis by the rotary knob of its end, flat thin magnet is equipped with in the end of described every rotation chi, described two flat thin magnets adsorb connection mutually by the rotation around rotary knob, on described rotary knob, there is divided circle, for showing the anglec of rotation of rotating chi.
Described main scale is bolted rotation chi.
On described flat thin magnet, have circular hole, the rotary picture circular arc for built-in nib with rotation chi.
Described flat thin magnet is triangle.
beneficial effect
The utlity model has following advantage and good effect:
The utility model can draw isosceles right triangle, straight line, circular arc and have the angle of the number of degrees according to teaching demand, and the flat thin magnet by main scale and rotation ruler end part, converts ruler to isosceles right angle triangle as required; By rotation chi and divided circle, draw angle; Rotation by the circular hole on flat thin magnet and rotation chi draws circular arc; The utility model simplicity of design, easy and simple to handle, be applicable to the general daily teaching demand of teaching person.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
The specific embodiment
Below in conjunction with specific embodiment, further set forth the utility model.Should be understood that these embodiment are only not used in restriction scope of the present utility model for the utility model is described.In addition should be understood that those skilled in the art can make various changes or modifications the utility model after having read the content of the utility model instruction, these equivalent form of values fall within the application's appended claims limited range equally.
As shown in Figure 1, a kind of rotary type ruler, comprise flat thin magnet 1, rotary knob 2, main scale 3 and rotation chi 4, the two ends of described main scale 3 connect two rotation chis 4 by the rotary knob 2 of its end, flat thin magnet 1 is equipped with in the end of described every rotation chi 4, described two flat thin magnets 1 adsorb connection mutually by the rotation around rotary knob 2, on described rotary knob 2, have divided circle 5, for showing the anglec of rotation of rotating chi 4.
Described main scale 3 is bolted rotation chi 4.
On described flat thin magnet 1, have circular hole, the rotary picture circular arc for built-in nib with rotation chi 4.
Described flat thin magnet 1 is triangle.
Embodiment
The utility model can not only draw straight line and isosceles triangle, can also draw angle and circular arc.While drawing straight line, rotation chi and main scale are unlikely to same straight line; While drawing isosceles triangle, by rotary knob, the flat thin magnet on two rotation ruler end parts is snapped into together; During painting folder angle, by the graduated one side of main scale, it is base, by rotary knob, a rotation chi is done to circular motion, now the divided circle between main scale and rotation chi can demonstrate the anglec of rotation of rotation chi, when rotating to the angle needing, one side at the graduated another side that draws angle of rotation chi; While drawing circular arc, nib is inserted to the circular hole on flat thin magnet, rotation chi is rotated and can draws smooth circular arc around rotary knob.The utility model simplicity of design, easy and simple to handle, be applicable to the general daily teaching demand of teaching person.

Claims (4)

1. a rotary type ruler, comprise flat thin magnet (1), rotary knob (2), main scale (3) and rotation chi (4), it is characterized in that: the two ends of described main scale (3) connect two rotation chis (4) by the rotary knob (2) of its end, flat thin magnet (1) is equipped with in the end of described every rotation chi (4), described two flat thin magnets (1) are by mutually adsorbing connection around the rotation of rotary knob (2), on described rotary knob (2), there is divided circle (5), for showing the anglec of rotation of rotation chi (4).
2. rotary type ruler according to claim 1, is characterized in that: described main scale (3) is bolted rotation chi (4).
3. rotary type ruler according to claim 1, is characterized in that: described flat thin magnet has circular hole on (1), the rotary picture circular arc for built-in nib with rotation chi (4).
4. rotary type ruler according to claim 1, is characterized in that: described flat thin magnet (1) is triangle.
CN201420299859.2U 2014-06-06 2014-06-06 Rotatable straight ruler Expired - Fee Related CN203888466U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420299859.2U CN203888466U (en) 2014-06-06 2014-06-06 Rotatable straight ruler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420299859.2U CN203888466U (en) 2014-06-06 2014-06-06 Rotatable straight ruler

Publications (1)

Publication Number Publication Date
CN203888466U true CN203888466U (en) 2014-10-22

Family

ID=51714912

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420299859.2U Expired - Fee Related CN203888466U (en) 2014-06-06 2014-06-06 Rotatable straight ruler

Country Status (1)

Country Link
CN (1) CN203888466U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106864112A (en) * 2015-12-14 2017-06-20 西安科技大学 A kind of ruler and method for drafting that can draw angle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106864112A (en) * 2015-12-14 2017-06-20 西安科技大学 A kind of ruler and method for drafting that can draw angle

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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: 20141022

Termination date: 20150606

EXPY Termination of patent right or utility model