CN203046628U - Box ruler type teaching divider - Google Patents

Box ruler type teaching divider Download PDF

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Publication number
CN203046628U
CN203046628U CN 201320039610 CN201320039610U CN203046628U CN 203046628 U CN203046628 U CN 203046628U CN 201320039610 CN201320039610 CN 201320039610 CN 201320039610 U CN201320039610 U CN 201320039610U CN 203046628 U CN203046628 U CN 203046628U
Authority
CN
China
Prior art keywords
ruler
box
axle
divider
sucker
Prior art date
Application number
CN 201320039610
Other languages
Chinese (zh)
Inventor
梁维秀
Original Assignee
梁维秀
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 梁维秀 filed Critical 梁维秀
Priority to CN 201320039610 priority Critical patent/CN203046628U/en
Application granted granted Critical
Publication of CN203046628U publication Critical patent/CN203046628U/en

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Abstract

The utility model provides a box ruler type teaching divider, and belongs to the technical field of teaching appliances. The structure of the box ruler type teaching divider is that a rotating stopper pin is arranged on an outer shell of a box ruler, a steel ruler is arranged in an inner cavity of the outer shell through a volute spiral spring shaft, a base support is fixedly arranged on the bottom of a pull ruler of the box ruler, a connecting shaft is arranged on the bottom of the base support, the connecting shaft is connected with an upper rotating plate of a plane bearing, a lower rotating plate of the plane bearing is connected with a sucking disc shaft, and a sucking disc is arranged at the lower end of the sucking disc shaft. A clamp groove is formed in a chalk tube body, and a hook at the front end of the steel ruler is connected in the clamp groove in a penetrating mode and is abutted against the clamp groove in a fastening mode. The box ruler type teaching divider is improved on a basis of the box ruler, the rotating stopper pin of the box ruler is utilized to lock the retractable length of the steel ruler so as to fix a radius of a circle to be drawn, the box ruler type teaching divider is absorbed to a blackboard through the sucking disc so as to fix a circle center, after a handheld chalk tube tensions the steel ruler, the handheld chalk tube rotates around the sucking disc, and the circle is drawn through the rotation of the plane bearing.

Description

Box chi formula educational compasses

Technical field

The utility model relates to the teaching appliance technical field, specifically a kind of box chi formula educational compasses.

Background technology

General; the teachers association draws circular pattern by educational compasses at blackboard in the mathematical education; two stem limited length of educational compasses; and it is big to take up space; deposit and carry all inconvenient; in use occur damaging through regular meeting, influence the blackboard writing on the blackboard and normally carry out, influence quality of instruction when serious.

Summary of the invention

Technical assignment of the present utility model is to solve the deficiencies in the prior art, and a kind of box chi formula educational compasses is provided.

The technical solution of the utility model realizes in the following manner, this box chi formula educational compasses, its structure is that box chi shell is provided with the spline pin, steel ruler is arranged on shell inner cavity by the scroll spring axle, the chi bottom surface of drawing at the box chi is set with collet, is provided with connecting axle below the collet, and connecting axle is connected with the top rotary table of plane bearing, the lower rotary table of plane bearing is connected with the sucker axle, and sucker axle lower end is provided with sucker; One chalk pipe pipe shaft is provided with draw-in groove, and the hook cross-under of steel ruler front end is in draw-in groove and pass through the bolted apical grafting in draw-in groove.

Box chi shell is provided with presses holder, presses holder, connecting axle, sucker axle and the coaxial setting of sucker.

The beneficial effect that the utility model compared with prior art produces is:

The design of this box chi formula educational compasses is to improve on the basis of box chi, utilize the spline pin of box chi to lock the collapsing length of steel ruler, thereby fixedly the picture radius of circle utilizes sucker to adsorb at blackboard, thus the fixing center of circle, press with hand in case of necessity and press holder, to avoid sucker to come off, behind the hand-held chalk pipe tensioning steel ruler, rotate around sucker, by the rotation of plane bearing, draw annulus at once.Can not take up room directly steel ruler indentation box chi when not using, deposit and carry all very convenient.Wherein the setting of plane bearing can be avoided steel ruler bending in the other direction, helps to paint circle and carries out smoothly.

This box chi formula educational compasses is reasonable in design, simple in structure, safe and reliable, easy to use, be easy to safeguard, has good value for applications.

Description of drawings

Accompanying drawing 1 is structural representation of the present utility model.

Mark in the accompanying drawing is represented respectively:

1, box chi, 2, shell, 3, the spline pin, 4, steel ruler, 5, the scroll spring axle, 6, draw the chi bottom surface, 7, collet, 8, connecting axle, 9, plane bearing, 10, top rotary table, 11, lower rotary table, 12, the sucker axle, 13, sucker, 14, the chalk pipe, 15, draw-in groove, 16, hook, 17, bolt, 18, press holder.

The specific embodiment

Below in conjunction with accompanying drawing box chi formula educational compasses of the present utility model is done following detailed description the in detail.

As shown in drawings, box chi formula educational compasses of the present utility model, its structure is that box chi 1 shell 2 is provided with spline pin 3, steel ruler 4 is arranged on shell 2 inner chambers by scroll spring axle 5, the chi bottom surface 6 of drawing at box chi 1 is set with collet 7, is provided with connecting axle 8 below the collet 7, and connecting axle 8 is connected with the top rotary table 10 of plane bearing 9, the lower rotary table 11 of plane bearing 9 is connected with sucker axle 12, and sucker axle 12 lower ends are provided with sucker 13; One chalk pipe, 14 pipe shafts are provided with draw-in groove 15, and hook 16 cross-under of steel ruler 4 front ends are in draw-in groove 15 and pass through bolt 17 fastening apical graftings in draw-in groove.Box chi shell 2 is provided with presses holder 18, presses holder 18, connecting axle 8, sucker axle 12 and sucker 13 coaxial settings.

Claims (2)

1. box chi formula educational compasses, box chi shell is provided with the spline pin, steel ruler is arranged on shell inner cavity by the scroll spring axle, it is characterized in that being set with collet in the chi bottom surface of drawing of box chi, be provided with connecting axle below the collet, connecting axle is connected with the top rotary table of plane bearing, and the lower rotary table of plane bearing is connected with the sucker axle, and sucker axle lower end is provided with sucker; One chalk pipe pipe shaft is provided with draw-in groove, and the hook cross-under of steel ruler front end is in draw-in groove and pass through the bolted apical grafting in draw-in groove.
2. box chi formula educational compasses according to claim 1 is characterized in that box chi shell is provided with to press holder, presses holder, connecting axle, sucker axle and the coaxial setting of sucker.
CN 201320039610 2013-01-25 2013-01-25 Box ruler type teaching divider CN203046628U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201320039610 CN203046628U (en) 2013-01-25 2013-01-25 Box ruler type teaching divider

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201320039610 CN203046628U (en) 2013-01-25 2013-01-25 Box ruler type teaching divider

Publications (1)

Publication Number Publication Date
CN203046628U true CN203046628U (en) 2013-07-10

Family

ID=48729619

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201320039610 CN203046628U (en) 2013-01-25 2013-01-25 Box ruler type teaching divider

Country Status (1)

Country Link
CN (1) CN203046628U (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103950324A (en) * 2014-04-30 2014-07-30 电子科技大学 Portable four-degree-of-freedom teaching compass
CN104325818A (en) * 2014-10-24 2015-02-04 孙睿豪 Circle describing instrument for blackboard
CN105383215A (en) * 2015-12-11 2016-03-09 苏州市启扬商贸有限公司 Compass with tape
CN105383214A (en) * 2015-12-11 2016-03-09 苏州市启扬商贸有限公司 Small-size compass
CN110654145A (en) * 2018-06-29 2020-01-07 白天畅 Gyro compasses

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103950324A (en) * 2014-04-30 2014-07-30 电子科技大学 Portable four-degree-of-freedom teaching compass
CN104325818A (en) * 2014-10-24 2015-02-04 孙睿豪 Circle describing instrument for blackboard
CN105383215A (en) * 2015-12-11 2016-03-09 苏州市启扬商贸有限公司 Compass with tape
CN105383214A (en) * 2015-12-11 2016-03-09 苏州市启扬商贸有限公司 Small-size compass
CN110654145A (en) * 2018-06-29 2020-01-07 白天畅 Gyro compasses

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Legal Events

Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130710

Termination date: 20140125

C17 Cessation of patent right