CN108973454A - A kind of magnetic absorption type compasses and its application method - Google Patents
A kind of magnetic absorption type compasses and its application method Download PDFInfo
- Publication number
- CN108973454A CN108973454A CN201810714088.1A CN201810714088A CN108973454A CN 108973454 A CN108973454 A CN 108973454A CN 201810714088 A CN201810714088 A CN 201810714088A CN 108973454 A CN108973454 A CN 108973454A
- Authority
- CN
- China
- Prior art keywords
- screw rod
- compasses
- absorption type
- magnetic absorption
- arm
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L9/00—Circular curve-drawing or like instruments
- B43L9/02—Compasses
- B43L9/04—Beam compasses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L12/00—Means to prevent slippage
- B43L12/02—Means to prevent slippage magnetic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L9/00—Circular curve-drawing or like instruments
- B43L9/16—Features common to compasses, dividers, and callipers
- B43L9/24—Means for mounting points or writing appliances on legs
- B43L9/245—Means for mounting points or writing appliances on legs for mounting centering elements
Abstract
The present invention relates to a kind of magnetic absorption type compasses and its application methods, the magnetic absorption type compasses include support sleeve, magnet steel, compasses arm, chalk sleeve and centering screw rod, support sleeve lower end is equipped with magnet steel, compasses arm is set in support set upper side by rolling bearing, compasses arm is equipped with chute hole, chalk sleeve is slideably sheathed within chute hole, and centering screw rod may pass through magnet steel after being spirally connected with support sleeve and hold out against with blackboard panel.The application method include be adsorbed in magnet on ferromagnetism blackboard, lock centering screw rod, adjusting and lock chalk sleeve and chute hole relative position, rotation compasses arm, circle is drawn out on blackboard.Using technical solution of the present invention, it is accurately determined by centering screw rod and draws round center location, relative position by adjusting chalk sleeve and chute hole adjusts circular size, chalk sleeve position is locked by lock nut, keep the figure drawn out more acurrate, avoids occurring drawing the situation of round inaccuracy because hand shakes.
Description
Technical field
The invention belongs to teaching aid technical field more particularly to a kind of magnetic absorption type compasses and its application methods.
Background technique
Compasses are a kind of specific purpose tools for drawing round or string, are essential tools in student's study and teaching.
Common compasses are Double-arm compass, wherein an arm is fixing end, another arm is the paintbrush for completing track, the maximum of this compasses
It is smaller to draw radius, certain restrictions is caused to teachers and students' use；And after especially chalk uses certain length to paintbrush, remain
Remaining chalk cannot be reused due to too short, cause to waste；In addition, an arm of fixing end is manually to feel relieved, centering is not
Stablize, influences using in the instructional process of teacher, since blackboard is usually to erect placement, circle in the prior art
Rule can not usually be suitable in blackboard upper drawing circle, this brings difficulty to the education activities of teacher.In the prior art, it such as discloses
Number are as follows: the patent document of " CN103317907A " discloses a kind of magnetic compasses.The invention discloses a kind of magnetic compasses, magnetic
Inhaling compasses includes graduated scale, and graduated scale is equipped with graduation mark, and origin is carved on one end of graduated scale, is located at origin on graduated scale
One end is connected with positioning plate, and the back of positioning plate is equipped with magnet, and movable sleeve is connected to shifter on graduated scale, and offering on shifter can
The peep hole of graduation mark is observed, the center of peep hole is located on graduation mark, offers on shifter corresponding with peep hole solid
Determine hole, the spacing and origin at the center at the center and fixation hole of peep hole are equal with the spacing of magnetic blow out centre, the two sides of shifter
Equipped with rotary fixing screw mother, using the technical solution of the invention, due to being not provided with corresponding centring means, drawn using the compasses
The circular shape and size produced often are not allowed, along with when teacher occur in use hand shake when, hold
It easily deflects the lines drawn, affects the precision of graphing.
Summary of the invention
In order to solve the above technical problems, the present invention provides a kind of magnetic absorption type compasses and its application methods.
The present invention provides a kind of magnetic absorption type compasses, for using blackboard made of ferrimagnet, including support sleeve,
Magnet steel, compasses arm, chalk sleeve and centering screw rod, the magnet steel are installed on the support sleeve lower end, and the compasses arm passes through rolling
Dynamic bearing is set in the support set upper side, and the compasses arm is equipped with chute hole, and the chalk sleeve is sheathed on the chute hole
Within and can be slided along compasses arm lengths direction, within the support sleeve be equipped with threaded hole, the centering screw rod and institute
It states threaded hole and screws and may pass through magnet steel and held out against with blackboard panel.
The magnet steel lower end is additionally provided with sealing ring.
The centering screw rod lower end is equipped with top.
The centering screw rod upper end is also arranged with locking nut.
The support set upper side is also arranged with gland nut, and gland nut and rolling bearing are simultaneously tight.
The rolling bearing is self-aligning roller bearing.
The magnetic absorption type compasses further include the diameter adjusting screw rod being arranged in the chute hole, and the one of diameter adjusting screw rod
End is rotatably assorted with the chute hole inner wall to be connect, and the other end of diameter adjusting screw rod penetrates the sliding slot wall surface of the hole and prolongs outward
It stretches, and is spirally connected in the middle part of diameter adjusting screw rod with the chalk sleeve, lock nut is also arranged on diameter adjusting screw rod, lock spiral shell
Mother can be with the compasses arm outer end face and tight.
Pen sheath hole is small top and big bottom reverse taper hole.
The graduation mark that indexing is 1mm is provided on compasses arm outer surface.
In addition, the present invention also provides a kind of application methods using the magnetic absorption type compasses, comprising the following steps:
Step 1: it is adsorbed in support sleeve using on blackboard made of ferrimagnet magnet steel；
Step 2: screwing centering screw rod, so that centering screw rod head end is passed through the magnet steel and holds out against blackboard panel, then screws lock
Tight nut makes centering screw rod be fixed together with support sleeve；
Step 3: rotation diameter adjusting screw rod moves to the appropriate position the chalk sleeve along chute hole, is rotated further by lock
Determine nut, make lock nut and the compasses arm outer end face and tight, to pen sheath hole within be put into chalk；
Step 4: rotation compasses arm makes to be packed into rotating within chalk sleeve around centering screw rod, circular rail is drawn on blackboard
Mark.
The beneficial effects of the present invention are: technical solution provided by the invention is used, compasses arm is not straight with centering screw rod
It is connected together in succession, for teacher when drawing circular pattern, the spinning movement of compasses arm not will drive the rotation of centering screw rod, reduce
Influence to blackboard panel, maintains the flatness of blackboard panel, extends service life of the invention, passes through centering screw rod
The top circle weight that can accurately determine the center of circle, and compasses arm center of rotation is made by aligning antifriction bearing and is determined of lower end
It closes, the circular pattern drawn out is more accurate, and chalk is directly sleeved within chalk sleeve, by rotating diameter adjusting screw rod, makes powder
The pen cap is moved along chute hole length direction, realizes the purpose that the circular radius length drawn is adjusted, then will lock
Determine nut and compasses arm outer end face and tight, makes to cover respectively and be fixed relative to the position of compasses arm, be conducive to more accurately draw out
Circular pattern is diameter when being transferred to shaking on diameter adjusting screw rod if hand shaking situation occurs in drawing process in teacher
Xiang Li slide chalk sleeve can not along diameter adjusting screw rod axis, so that it is circular to ensure that teacher draws on blackboard
Accurately.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention；
Fig. 2 is structural schematic diagram of the present invention along support sleeve axial direction cutting；
Fig. 3 is top view of the invention；
Fig. 4 is the structural schematic diagram of support sleeve of the present invention.
In figure: 1- support sleeve, 2- magnet steel, 3- compasses arm, 4- chalk sleeve, 5- centering screw rod, 6- rolling bearing, 7- locking screw
Mother, 8- gland nut, 9- diameter adjusting screw rod, 10- chalk, 11- lock nut, 12- sealing ring, 101- threaded hole, 301- are sliding
Slot, 302- graduation mark, 401- pen sheath hole, 501- are top.
Specific embodiment
Technical solution of the present invention is described further below in conjunction with attached drawing, but required protection scope does not limit to
In described；
The present invention provides a kind of magnetic absorption type compasses and its application methods, as shown in Figure 1, Figure 2, Figure 3, Figure 4, for using
On blackboard made of ferrimagnet, including support sleeve 1, magnet steel 2, compasses arm 3, chalk sleeve 4 and centering screw rod 5, magnet steel 2 are pacified
Loaded on 1 lower end of support sleeve, compasses arm 3 is set in 1 upper end of support sleeve by rolling bearing 6, and compasses arm 3 is equipped with chute hole 301,
Chalk sleeve 4 is sheathed within chute hole 301 and can slide along 3 length direction of compasses arm, and threaded hole is equipped within support sleeve 1
101, centering screw rod 5 screws with threaded hole 101 and may pass through magnet steel to be held out against with blackboard panel.
Using technical solution provided by the invention, compasses arm is not directly linked together with centering screw rod, and teacher is drawing
When round figure, the spinning movement of compasses arm not will drive the rotation of centering screw rod, reduce the influence to blackboard panel, protect
The flatness for having held blackboard panel extends service life of the invention, and top by centering screw rod lower end can accurately really
Centering, and compasses arm center of rotation is overlapped with the circle determined by aligning antifriction bearing, the circular pattern drawn out is more
Precisely, chalk is directly sleeved within chalk sleeve, by rotating diameter adjusting screw rod, makes chalk sleeve along chute hole length direction
It is mobile, realize the purpose that the circular radius length drawn is adjusted, then simultaneously by lock nut and compasses arm outer end face
Tightly, make to cover respectively and be fixed relative to the position of compasses arm, be conducive to more accurately draw out circular pattern, if teacher was drawing
Occur hand shaking situation in journey, is then radial force when being transferred to shaking on diameter adjusting screw rod, makes chalk sleeve can not be along circle
Diameter adjusting screw rod axis sliding, so that it is circular accurate to ensure that teacher draws on blackboard.
Further, 2 lower end of magnet steel is additionally provided with sealing ring.Using technical solution of the present invention, magnet steel 2 passes through sealing ring
It is adsorbed on blackboard panel, keeps magnet steel 2 more reliable and is adsorbed on blackboard panel securely, to draw accurately circular figure below
Shape is laid a good foundation.
Further, centering 5 lower end of screw rod is equipped with top 501.Centering 5 upper end of screw rod is also arranged with locking nut 7.Support
It covers 1 upper end and is also arranged with gland nut 8, gland nut 8 and rolling bearing 6 are simultaneously tight.Rolling bearing 6 is self-aligning roller bearing.It adopts
With technical solution of the present invention, by locking nut 7 and gland nut 8 and tight, the accurate place of screw rod 5 that successively makes to feel relieved is black
Center location is determined on plate, and is reliably fixed, since compasses arm 3 is installed on support sleeve 1 by rolling bearing 6, gland spiral shell
Mother 8 compresses 6 inner ring of rolling bearing, prevents compasses arm 3 from falling off, and the center of rotation of compasses arm 3 is also made to pass through the tune of rolling bearing 6
The heart effect be allowed to top 501 determined by the center of circle be overlapped.
Further, magnetic absorption type compasses further include the diameter adjusting screw rod 9 being arranged in chute hole 301, and diameter adjusts spiral shell
One end of bar 9 is rotatably assorted with 301 inner wall of chute hole and connect, the other end of diameter adjusting screw rod 9 penetrate 301 wall surface of chute hole to
Outer extension, and 9 middle part of diameter adjusting screw rod is spirally connected with chalk sleeve 4, and lock nut 11 is also arranged on diameter adjusting screw rod 9,
Lock nut 11 can be with 3 outer end face of compasses arm and tight.Pen sheath hole 401 is small top and big bottom reverse taper hole.3 appearance of compasses arm
The graduation mark 302 that indexing is 1mm is provided on face.Using technical solution of the present invention, chalk sleeve is loaded within pen sheath hole 401,
And common chalk is used, before use, adjust the required circular pattern drawn by rotating diameter adjusting screw rod 9 half
Diameter size meets the accurate drafting circular demand of different size, and once regulates the position of chalk sleeve 4, then passes through lock
Determine nut 11 to lock the position of chalk sleeve 4, is conducive to keep the graphics track of drafting more acurrate, reduces the deviation of appearance.
In addition, the present invention also provides a kind of application methods of magnetic absorption type compasses, comprising the following steps:
Step 1: it is adsorbed in support sleeve 1 using on blackboard made of ferrimagnet magnet steel 2；
Step 2: screwing centering screw rod 5, so that centering 5 head end of screw rod is passed through magnet steel 2 and holds out against blackboard panel, then screws lock
Tight nut 7 makes centering screw rod 5 be fixed together with support sleeve 1；
Step 3: rotation diameter adjusting screw rod 9 moves to the appropriate position chalk sleeve 4 along chute hole 301, is rotated further by
Lock nut 11 makes lock nut 11 and 3 outer end face of compasses arm and tight, to pen sheath hole 401 within be put into chalk；
Step 4: rotation compasses arm 3 makes to be packed into rotating within chalk sleeve 4 around centering screw rod 5, circle is drawn on blackboard
Shape track.
Using technical solution provided by the invention, compasses arm is not directly linked together with centering screw rod, and teacher is drawing
When round figure, the spinning movement of compasses arm not will drive the rotation of centering screw rod, reduce the influence to blackboard panel, protect
The flatness for having held blackboard panel extends service life of the invention, and top by centering screw rod lower end can accurately really
Centering, and compasses arm center of rotation is overlapped with the circle determined by aligning antifriction bearing, the circular pattern drawn out is more
Precisely, chalk is directly sleeved within chalk sleeve, by rotating diameter adjusting screw rod, makes chalk sleeve along chute hole length direction
It is mobile, realize the purpose that the circular radius length drawn is adjusted, then simultaneously by lock nut and compasses arm outer end face
Tightly, make to cover respectively and be fixed relative to the position of compasses arm, be conducive to more accurately draw out circular pattern, if teacher was drawing
Occur hand shaking situation in journey, is then radial force when being transferred to shaking on diameter adjusting screw rod, makes chalk sleeve can not be along circle
Diameter adjusting screw rod axis sliding, so that it is circular accurate to ensure that teacher draws on blackboard.
Claims (10)
1. a kind of magnetic absorption type compasses, it is characterised in that: for using blackboard made of ferrimagnet, including support sleeve (1),
Magnet steel (2), compasses arm (3), chalk sleeve (4) and centering screw rod (5), the magnet steel (2) are installed under the support sleeve (1)
End, the compasses arm (3) are set in the support sleeve (1) upper end by rolling bearing (6), and the compasses arm (3), which is equipped with, to be slided
Slot (301), the chalk sleeve (4) are sheathed within the chute hole (301) and can be along compasses arm (3) length directions
It slides, is equipped with threaded hole (101) within the support sleeve (1), the centering screw rod (5) and the threaded hole (101) screw simultaneously
It may pass through magnet steel to hold out against with blackboard panel.
2. a kind of magnetic absorption type compasses as described in claim 1, it is characterised in that: magnet steel (2) lower end is additionally provided with sealing
Circle.
3. a kind of magnetic absorption type compasses as described in claim 1, it is characterised in that: the centering screw rod (5) lower end is equipped with top
(501)。
4. a kind of magnetic absorption type compasses as described in claim 1, it is characterised in that: centering screw rod (5) upper end is also arranged with
Locking nut (7).
5. a kind of magnetic absorption type compasses as described in claim 1, it is characterised in that: support sleeve (1) upper end is also arranged with pressure
Box nut (8), gland nut (8) and rolling bearing (6) are simultaneously tight.
6. a kind of magnetic absorption type compasses as described in claim 1, it is characterised in that: the rolling bearing (6) is aligning roller axis
It holds.
7. a kind of magnetic absorption type compasses as described in claim 1, it is characterised in that: the magnetic absorption type compasses further include being arranged in institute
The diameter adjusting screw rod (9) in chute hole (301) is stated, one end of diameter adjusting screw rod (9) and the chute hole (301) inner wall turn
Dynamic to be cooperatively connected, the other end of diameter adjusting screw rod (9) penetrates the chute hole (301) wall surface and extends outwardly, and diameter tune
It is spirally connected, is also arranged on diameter adjusting screw rod (9) lock nut (11) with the chalk sleeve (4) in the middle part of section screw rod (9), lock spiral shell
Female (11) can be with compasses arm (3) outer end face and tight.
8. a kind of magnetic absorption type compasses as claimed in claim 7, it is characterised in that: pen sheath hole (401) is small top and big bottom
Reverse taper hole.
9. a kind of magnetic absorption type compasses as described in claim 1, it is characterised in that: be provided on compasses arm (3) outer surface
Indexing is the graduation mark (302) of 1mm.
10. a kind of a kind of application method of magnetic absorption type compasses as described in claim 1, it is characterised in that: the following steps are included:
Step 1: it is adsorbed in support sleeve (1) using on blackboard made of ferrimagnet magnet steel (2)；
Step 2: screwing centering screw rod (5), so that centering screw rod (5) head end is passed through the magnet steel (2) and holds out against blackboard panel, then
Screwing locking nut (7) makes centering screw rod (5) be fixed together with support sleeve (1)；
Step 3: rotation diameter adjusting screw rod (9) moves to the appropriate position the chalk sleeve (4) along chute hole (301),
Lock nut (11) are rotated further by, make lock nut (11) and compasses arm (3) outer end face and tight, within pen sheath hole (401)
It is put into chalk；
Step 4: rotation compasses arm (3) makes to be packed into rotating within chalk sleeve (4) around centering screw rod (5), draws on blackboard
Circular trace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810714088.1A CN108973454A (en) | 2018-06-29 | 2018-06-29 | A kind of magnetic absorption type compasses and its application method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810714088.1A CN108973454A (en) | 2018-06-29 | 2018-06-29 | A kind of magnetic absorption type compasses and its application method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108973454A true CN108973454A (en) | 2018-12-11 |
Family
ID=64539894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810714088.1A Pending CN108973454A (en) | 2018-06-29 | 2018-06-29 | A kind of magnetic absorption type compasses and its application method |
Country Status (1)
| Country | Link |
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| CN (1) | CN108973454A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110031168A (en) * | 2019-04-04 | 2019-07-19 | 上海交通大学 | Two-tube interference dynamic response experimental provision under dummy level forced oscillation state |
| CN112572031A (en) * | 2020-12-28 | 2021-03-30 | 西安石油大学 | Drawing tool for mathematical modeling |
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|---|---|---|---|---|
| US5040299A (en) * | 1990-05-23 | 1991-08-20 | Hwang Ming Y | Base for cutting a circular plate with a gas burner |
| CN2197226Y (en) * | 1994-06-27 | 1995-05-17 | 常青民 | Multifunctional magnet compass |
| CN101234572A (en) * | 2008-02-28 | 2008-08-06 | 上海市上音杨浦学校 | Educational compasses |
| CN201333879Y (en) * | 2008-11-26 | 2009-10-28 | 梁利华 | Compasses absorbed on lecture course tablet |
| CN201442454U (en) * | 2008-11-26 | 2010-04-28 | 洪山 | Teaching ruler with magnetic needle |
| CN205112777U (en) * | 2015-11-22 | 2016-03-30 | 张计坤 | Diagraph |
| CN206633661U (en) * | 2017-03-01 | 2017-11-14 | 江苏建筑职业技术学院 | A kind of bullhead drawing compass for building with defencive function |
-
2018
- 2018-06-29 CN CN201810714088.1A patent/CN108973454A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5040299A (en) * | 1990-05-23 | 1991-08-20 | Hwang Ming Y | Base for cutting a circular plate with a gas burner |
| CN2197226Y (en) * | 1994-06-27 | 1995-05-17 | 常青民 | Multifunctional magnet compass |
| CN101234572A (en) * | 2008-02-28 | 2008-08-06 | 上海市上音杨浦学校 | Educational compasses |
| CN201333879Y (en) * | 2008-11-26 | 2009-10-28 | 梁利华 | Compasses absorbed on lecture course tablet |
| CN201442454U (en) * | 2008-11-26 | 2010-04-28 | 洪山 | Teaching ruler with magnetic needle |
| CN205112777U (en) * | 2015-11-22 | 2016-03-30 | 张计坤 | Diagraph |
| CN206633661U (en) * | 2017-03-01 | 2017-11-14 | 江苏建筑职业技术学院 | A kind of bullhead drawing compass for building with defencive function |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110031168A (en) * | 2019-04-04 | 2019-07-19 | 上海交通大学 | Two-tube interference dynamic response experimental provision under dummy level forced oscillation state |
| CN112572031A (en) * | 2020-12-28 | 2021-03-30 | 西安石油大学 | Drawing tool for mathematical modeling |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181211 |
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| RJ01 | Rejection of invention patent application after publication |