CN107718953A - A kind of compasses for teaching of fix stably - Google Patents

A kind of compasses for teaching of fix stably Download PDF

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Publication number
CN107718953A
CN107718953A CN201711023435.8A CN201711023435A CN107718953A CN 107718953 A CN107718953 A CN 107718953A CN 201711023435 A CN201711023435 A CN 201711023435A CN 107718953 A CN107718953 A CN 107718953A
Authority
CN
China
Prior art keywords
chalk
compasses
fix
teaching
away
Prior art date
Application number
CN201711023435.8A
Other languages
Chinese (zh)
Inventor
张�杰
毛永远
焦祝根
Original Assignee
绍兴柯桥雷霄机械科技有限公司
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 绍兴柯桥雷霄机械科技有限公司 filed Critical 绍兴柯桥雷霄机械科技有限公司
Priority to CN201711023435.8A priority Critical patent/CN107718953A/en
Publication of CN107718953A publication Critical patent/CN107718953A/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B43WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43LARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L12/00Means to prevent slippage
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B43WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43LARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L9/00Circular curve-drawing or like instruments
    • B43L9/02Compasses

Abstract

The present invention relates to tutor auxiliary platform equipment technical field, and disclose a kind of compasses for teaching of fix stably, including fix bar, the top movable of fix bar is connected with motion bar, the bottom of motion bar is fixedly connected with fixed cover by adapter sleeve, the inside of fixed cover is connected with chalk, the outer surface of chalk is socketed with geometrical clamp, the side of geometrical clamp is fixedly connected with threaded rod by connecting plate, the side of threaded rod is fixedly connected with fixed cover, side of the chalk away from threaded rod is fixedly connected with buffer spring by the first rubber blanket, one end of buffer spring is fixedly connected with the side of fixed cover inwall.The present invention drives connecting plate to move by rotating threaded rod, facilitate fixation of the geometrical clamp to chalk, stress moves when being contacted by chalk with geometrical clamp, the buffering of buffer spring is driven to unload power, prevent from causing chalk stress to fracture during fixed chalk, possess the advantages of chalk for being easy to fix on compasses prevents chalk from sliding and fractureing.

Description

A kind of compasses for teaching of fix stably

Technical field

The present invention relates to tutor auxiliary platform equipment technical field, specially a kind of compasses for teaching of fix stably.

Background technology

Teaching aid is when enabling each appliances and teachers' instruction used in the understanding content of courses of student's visual pattern The general name of the apparatus used, teaching aid can improve the learning interest of student, enrich perceptual knowledge, and help forms clear and definite concept, send out The observation ability and thinking ability of student is opened up, typically divides common teaching aid, special teaching aid and the class of Teachig-aid for infant studying three.

There are ruler and compasses through commonly used teaching aid during mathematical education, compasses can be very easily black Circle is drawn on plate, it is very easy to use, but compasses there is also it is certain the shortcomings that, such as compasses can not fix powder well Pen, easily causes chalk and slides and fracture during mapping, unnecessary trouble when causing to impart knowledge to students.

The content of the invention

(1) technical problem solved

In view of the shortcomings of the prior art, the invention provides a kind of compasses for teaching of fix stably, possess and be easy to fix The advantages of chalk on compasses prevents chalk from fractureing and sliding, chalk can not be fixed well by solving compasses, easily cause powder Pen during mapping slide and fracture the problem of.

(2) technical scheme

To achieve the above object, the present invention provides following technical scheme:A kind of compasses for teaching of fix stably, including it is solid Fixed pole, the top movable of the fix bar are connected with motion bar, and the outer surface at the fix bar top and motion bar junction is consolidated Surely movable sleeve is connected with, connecting rod is fixedly connected with the top of the movable sleeve, is fixedly connected with and turns at the top of the connecting rod .

The bottom of the fix bar and motion bar has been fixedly connected with expansion link, and the bottom of the expansion link is movably connected in The inside of telescopic mast, the bottom of the flexible rod outer surface are connected with steady pin, and the steady pin is connected to outside telescopic mast The inside for the fixing hole that surface opens up.

Fulcrum is fixedly connected with positioned at the bottom of the telescopic mast of the bottom of fixed, the bottom of the fulcrum is fixedly connected There is the first contiguous block, the bottom of first contiguous block is fixedly connected with sucker.

Adapter sleeve is connected with positioned at the outer surface of the flexible column bottom of the motion bar bottom, the adapter sleeve is with stretching The junction of contracting post is connected with bolt, and the side of the adapter sleeve is fixedly connected with the second contiguous block, second connection Side of the block away from adapter sleeve is fixedly connected with fixed cover.

The inside of the fixed cover is connected with chalk, and the outer surface of the chalk is socketed with geometrical clamp, the geometrical clamp Side is fixedly connected with connecting plate, the connecting plate away from being fixedly connected with bearing in the middle part of geometrical clamp side, the bearing Inside is fixedly connected with threaded rod, and the outer surface thread of the threaded rod is connected with thread bush, and the thread bush is fixedly connected on Middle part of the fixed cover away from motion bar side, side of the threaded rod away from connecting plate is fixedly connected with through fixed cover to be turned Bar.

Side of the chalk away from threaded rod is connected with the first rubber blanket, and first rubber blanket is close to chalk one The outer surface of side offers anti-slip veins, and the side of first rubber blanket away from chalk is fixedly connected with buffer spring, described slow Rush the side that the one end of spring away from the first rubber blanket is fixedly connected on fixed plate, side of the fixed plate away from buffer spring It is fixedly connected with the side of fixed cover inwall.

Preferably, the quantity of the fixing hole is five, and five fixing holes equidistantly distribute in telescopic mast from top to down Outer surface.

Preferably, the side of the telescopic mast is fixedly connected with notice board, and the front of the notice board is fixedly connected with number Letter stencil.

Preferably, the telescopic mast, which is located at below adapter sleeve, is fixedly connected with limiting plate, and the limiting plate is shaped as It is circular.

Preferably, the quantity of the geometrical clamp is two, and two geometrical clamps are symmetrically distributed in connecting plate away from threaded rod one The top and bottom of side.

Preferably, inside of the geometrical clamp away from connecting rod side is fixedly connected with the second rubber blanket, second rubber The shape of rubber cushion and geometrical clamp is circular arc.

Preferably, the outer surface of the handle is fixedly connected with rubber sleeve, and the rubber sleeve is shaped as cylinder.

Preferably, the both sides of the handle are fixedly connected with limited location block, and the limited block is shaped as cylinder.

Preferably, side of the limited block away from handle is fixedly connected with hook, the internal activity connection of the hook There is lanyard.

(3) beneficial effect

Compared with prior art, the invention provides a kind of compasses for teaching of fix stably, possesses following beneficial effect:

1st, the compasses for teaching of the fix stably, by rotating bull stick, threaded rod is moved, drives connecting plate movement, side Fixation of the geometrical clamp to chalk, possess the advantages of chalk for being easy to fix on compasses prevents chalk from sliding, solve compasses Chalk can not be fixed well, easily cause chalk slid during mapping the problem of.

2nd, the compasses for teaching of the fix stably, stress moves when being contacted by chalk with geometrical clamp, drives the first rubber The movement of pad, the buffering of buffered spring unload power, prevent from causing chalk stress to fracture during fixed chalk, and prevent Teacher's chalk caused by the direct contact that is excessive and causing chalk and fixed cover of exerting oneself in mapping fractures, possess be easy to it is solid Determine the advantages of chalk on compasses prevents chalk from fractureing, solve chalk and directly contacted with fixed cover, easily cause chalk and making The problem of scheming and being fractureed during fixed.

3rd, the compasses for teaching of the fix stably, by the way that sucker and blackboard are fixed, the suction through sucker is fixed with blackboard, With the advantage for being easy to fix the compasses center of circle, solving compasses can not be fixed on blackboard well, and which results in old Teacher with compasses when being mapped on blackboard, if firmly the uneven skew for easilying lead to the center of circle cause graphic making failure ask Topic, adds the success rate that compasses are mapped on blackboard.

4th, the compasses for teaching of the fix stably, threaded rod is moved left and right by adjusting bull stick, is facilitated to chalk Disassembly and installation, it is convenient to being changed using complete chalk, facilitated by regulating bolt to adapter sleeve on telescopic mast Movement, facilitate shorter to length and unused complete chalk and height be adjusted, facilitate bottom and the sucker of chalk Bottom in the same plane, can facilitate the picture of teacher.

5th, the compasses for teaching of the fix stably, by adjusting steady pin, the fixing hole card of steady pin and different height is made Connect, facilitate the regulation to compasses radius, facilitate mapping of the teacher on blackboard, shown by the numeral of digiboard on notice board Show, it is convenient in the contrast of the telescopic mast present position of fix bar and motion bar bottom, conveniently making two telescopic masts same respectively One horizontal plane, facilitate drawing of the teacher on blackboard.

Brief description of the drawings

Fig. 1 is schematic structural view of the invention;

Fig. 2 is the mplifying structure schematic diagram in A portions in Fig. 1 of the present invention;

Fig. 3 is the mplifying structure schematic diagram in B portions in Fig. 1 of the present invention;

Fig. 4 is the mplifying structure schematic diagram in C portions in Fig. 1 of the present invention;

Fig. 5 is the overlooking the structure diagram of geometrical clamp in Fig. 1 of the present invention.

In figure:1 fix bar, 2 motion bars, 3 expansion links, 4 telescopic masts, 5 fixing holes, 6 steady pins, 7 notice boards, 8 digiboards, 9 fulcrums, 10 first contiguous blocks, 11 suckers, 12 adapter sleeves, 13 bolts, 14 limiting plates, 15 second contiguous blocks, 16 fixed covers, 17 are consolidated Fixed board, 18 buffer springs, 19 first rubber blankets, 20 anti-slip veins, 21 chalks, 22 thread bush, 23 threaded rods, 24 bull sticks, 25 bearings, 26 connecting plates, 27 geometrical clamps, 28 second rubber blankets, 29 movable sleeves, 30 connecting rods, 31 handles, 32 rubber sleeves, 33 limited blocks, 34 Hook, 35 lanyards.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made Embodiment, belong to the scope of protection of the invention.

Fig. 1-5, a kind of compasses for teaching of fix stably, including fix bar 1 are referred to, the top movable of fix bar 1 connects Motion bar 2 is connected to, the outer surface at the top of fix bar 1 and the junction of motion bar 2 is fixedly connected with movable sleeve 29, the top of movable sleeve 29 Portion is fixedly connected with connecting rod 30, and the top of connecting rod 30 is fixedly connected with handle 31, and the outer surface of handle 31 is fixedly connected with Rubber sleeve 32, rubber sleeve 32 are shaped as cylinder, and comfortableness during rotation handle 31 is added by rubber sleeve 32, makes use Compasses are mapped more comfortably on blackboard, and the both sides of handle 31 are fixedly connected with limited location block 33, and limited block 33 is shaped as justifying Cylindricality, prevent the disengaging of rubber sleeve 32 and handle 31 from adding the steadiness of rubber sleeve 32 by limited block 33, limited block 33 is remote Side from handle 31 is fixedly connected with hook 34, and the internal activity for linking up with 34 is connected with lanyard 35, is facilitated by lanyard 35 Suspension to compasses, convenient placement when without using compasses to compasses.

The bottom of fix bar 1 and motion bar 2 has been fixedly connected with expansion link 3, and the bottom of expansion link 3 is movably connected in flexible The inside of post 4, the bottom of the outer surface of expansion link 3 are connected with steady pin 6, and steady pin 6 is connected to the outer surface of telescopic mast 4 and opened up Fixing hole 5 inside, the quantity of fixing hole 5 is five, and five fixing holes 5 equidistantly distribute in telescopic mast 4 from top to down Outer surface, the side of telescopic mast 4 are fixedly connected with notice board 7, and the front of notice board 7 is fixedly connected with digiboard 8, digiboard 8 On be flagged with numeral, and the quantity of digiboard 8 is five, the position one-to-one corresponding of five digiboards 8 and five fixing holes 5, more The convenient position of telescopic mast 4 to both sides contrasts, and by adjusting steady pin 6, makes the fixing hole 5 of steady pin 6 and different height Clamping, the regulation to compasses radius is facilitated, facilitate mapping of the teacher on blackboard, pass through the number of digiboard 8 on notice board 7 Word is shown, convenient in the contrast of the present position of telescopic mast 4 of fix bar 1 and the bottom of motion bar 2, conveniently making two to stretch respectively Post 4 facilitates drawing of the teacher on blackboard in same level.

Fulcrum 9 is fixedly connected with positioned at the bottom of the telescopic mast 4 of the bottom of fix bar 1, the bottom of fulcrum 9 is fixedly connected with One contiguous block 10, the bottom of the first contiguous block 10 are fixedly connected with sucker 11, by the way that sucker 11 is fixed with blackboard, through sucker 11 Suction fixed with blackboard, have and be easy to fix the advantage in the compasses center of circle, solving compasses can not be fixed on blackboard well, Which results in when teacher is being mapped with compasses on blackboard, if firmly the uneven skew for easilying lead to the center of circle causes The problem of graphic making fails, adds the success rate that compasses are mapped on blackboard.

Adapter sleeve 12 is connected with positioned at the outer surface of the bottom of telescopic mast 4 of the bottom of motion bar 2, adapter sleeve 12 is with stretching The junction of post 4 is connected with bolt 13, and the lower section that telescopic mast 4 is located at adapter sleeve 12 is fixedly connected with limiting plate 14, spacing Plate 14 is shaped as circle, prevents adapter sleeve 12 from being slid from telescopic mast 4, and the side of adapter sleeve 12 is fixedly connected with the second connection Block 15, the second side of the contiguous block 15 away from adapter sleeve 12 are fixedly connected with fixed cover 16.

The inside of fixed cover 16 is connected with chalk 21, is facilitated by regulating bolt 13 to adapter sleeve 12 on telescopic mast 4 Movement, facilitate shorter to length and unused complete chalk 21 be adjusted height, facilitate bottom and the suction of chalk 21 The bottom of disk 11 in the same plane, can facilitate the picture of teacher, and the outer surface of chalk 21 is socketed with geometrical clamp 27, geometrical clamp 27 quantity is two, and two geometrical clamps 27 are symmetrically distributed in top and bottom of the connecting plate 26 away from the side of threaded rod 23, make What chalk 21 was fixed is more firm, and inside of the geometrical clamp 27 away from the side of connecting rod 26 is fixedly connected with the second rubber blanket 28, The shape of second rubber blanket 28 and geometrical clamp 27 is circular arc, add between chalk 21 and geometrical clamp 27 it is soft contact, prevent Fractureing for chalk 21 only is caused during fixed chalk 21, the side of geometrical clamp 27 is fixedly connected with connecting plate 26, connection Plate 26 is fixedly connected with threaded rod 23, spiral shell away from bearing 25, the inside of bearing 25 is fixedly connected with the middle part of the side of geometrical clamp 27 The outer surface thread of rasp bar 23 is connected with thread bush 22, and thread bush 22 is fixedly connected on fixed cover 16 away from the side of motion bar 2 Middle part, side of the threaded rod 23 away from connecting plate 26 are fixedly connected with bull stick 24 through fixed cover 16, by rotating bull stick 24, made Threaded rod 23 moves left, and drives connecting plate 26 to move, facilitates fixation of the geometrical clamp 27 to chalk 21, possess and be easy to fix compasses On chalk 21 prevent chalk 21 slide the advantages of, chalk 21 can not be fixed well by solving compasses, easily cause chalk 21 Slid during mapping the problem of, threaded rod 23 is moved left and right by adjusting bull stick 24, is facilitated to chalk 21 Disassembly and installation, it is convenient to being changed using complete chalk 21.

Side of the chalk 21 away from threaded rod 23 is connected with the first rubber blanket 19, and the first rubber blanket 19 is close to chalk 21 The outer surface of side offers anti-slip veins 20, and the first side of the rubber blanket 19 away from chalk 21 is fixedly connected with buffer spring 18, The one end of buffer spring 18 away from the first rubber blanket 19 is fixedly connected on the side of fixed plate 17, and fixed plate 17 is away from buffer spring 18 side is fixedly connected with the side of the inwall of fixed cover 16, and stress moves when being contacted by chalk 21 with geometrical clamp 27, is driven The movement of first rubber blanket 19, the buffering of buffered spring 18 unload power, prevent from causing chalk 21 during fixed chalk 21 Stress fractures, and prevents teacher in mapping caused by direct contact that is excessive and causing chalk 21 and fixed cover 16 of exerting oneself Chalk 21 fractures, and possesses the advantages of chalk 21 for being easy to fix on compasses prevents chalk from fractureing, solve chalk 21 directly with Fixed cover 16 contacts, and easily causes chalk 21 fractureed during mapping and fixation the problem of.

In summary, the compasses for teaching of the fix stably, by rotating bull stick 24, move threaded rod 23, the company of drive Fishplate bar 26 moves, and facilitates fixation of the geometrical clamp 27 to chalk 21, and possessing the chalk 21 for being easy to fix on compasses prevents chalk 21 The advantages of landing, chalk 21 can not be fixed well by solving compasses, easily cause what chalk 21 slid during mapping Problem.

Stress moves when being contacted by chalk 21 with geometrical clamp 27, drives the movement of the first rubber blanket 19, buffered spring 18 buffering unloads power, prevents from causing the stress of chalk 21 to fracture during fixed chalk 21, and prevent teacher mapping When caused by the direct contact that is excessive and causing chalk 21 and fixed cover 16 of exerting oneself chalk 21 fracture, possess and be easy to fix compasses On chalk 21 the advantages of preventing chalk from fractureing, solve chalk 21 and directly contacted with fixed cover 16, easily cause chalk 21 and exist The problem of mapping and being fractureed during fixed.

By the way that sucker 11 is fixed with blackboard, the suction through sucker 11 is fixed with blackboard, is had and is easy to fix the compasses center of circle Advantage, solving compasses can not be fixed on blackboard well, and which results in mapped in teacher with compasses on blackboard When, if the problem of firmly uneven skew for easilying lead to the center of circle causes graphic making to fail, adds compasses in blackboard The success rate of upper mapping.

Threaded rod 23 is moved left and right by adjusting bull stick 24, facilitates the disassembly and installation to chalk 21, convenience pair The chalk 21 used is changed, and is facilitated the movement to adapter sleeve 12 on telescopic mast 4 by regulating bolt 13, is facilitated Height is adjusted in shorter to length and unused complete chalk 21, and the bottom and the bottom of sucker 11 for facilitating chalk 21 can be In same plane, the picture of teacher is facilitated.

By adjusting steady pin 6, make the clamping of fixing hole 5 of steady pin 6 and different height, facilitate the tune to compasses radius Section, facilitates mapping of the teacher on blackboard, convenient to respectively in fix bar by the numerical monitor of digiboard 8 on notice board 7 1 and the bottom of motion bar 2 the present position of telescopic mast 4 contrast, two telescopic masts 4 is facilitated teacher in same level Drawing on blackboard, simple in construction, reasonable in design, easy to operate and safety and environmental protection of the invention.

It should be noted that herein, such as first and second or the like relational terms are used merely to a reality Body or operation make a distinction with another entity or operation, and not necessarily require or imply and deposited between these entities or operation In any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant are intended to Nonexcludability includes, so that process, method, article or equipment including a series of elements not only will including those Element, but also the other element including being not expressly set out, or it is this process, method, article or equipment also to include Intrinsic key element.

Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with A variety of changes, modification can be carried out to these embodiments, replace without departing from the principles and spirit of the present invention by understanding And modification, the scope of the present invention is defined by the appended.

Claims (9)

1. a kind of compasses for teaching of fix stably, including fix bar (1), it is characterised in that:Live at the top of the fix bar (1) Dynamic to be connected with motion bar (2), the outer surface at fix bar (1) top and motion bar (2) junction is fixedly connected with movable sleeve (29) connecting rod (30), is fixedly connected with the top of the movable sleeve (29), is fixedly connected with the top of the connecting rod (30) Handle (31);
The bottom of the fix bar (1) and motion bar (2) has been fixedly connected with expansion link (3), and the bottom of the expansion link (3) is lived The dynamic inside for being connected to telescopic mast (4), the bottom of expansion link (3) outer surface is connected with steady pin (6), the fixation Pin (6) is connected to the inside for the fixing hole (5) that telescopic mast (4) outer surface opens up;
Fulcrum (9), the bottom of the fulcrum (9) are fixedly connected with positioned at the bottom of the telescopic mast (4) of the fix bar (1) bottom The first contiguous block (10) is fixedly connected with, the bottom of first contiguous block (10) is fixedly connected with sucker (11);
Adapter sleeve (12), the connection are connected with positioned at the outer surface of telescopic mast (4) bottom of the motion bar (2) bottom The junction of set (12) and telescopic mast (4) is connected with bolt (13), and the side of the adapter sleeve (12) is fixedly connected with the Two contiguous blocks (15), side of second contiguous block (15) away from adapter sleeve (12) are fixedly connected with fixed cover (16);
The inside of the fixed cover (16) is connected with chalk (21), and the outer surface of the chalk (21) is socketed with geometrical clamp (27), The side of the geometrical clamp (27) is fixedly connected with connecting plate (26), and the connecting plate (26) is away from geometrical clamp (27) side Portion is fixedly connected with bearing (25), and the inside of the bearing (25) is fixedly connected with threaded rod (23), the threaded rod (23) Outer surface thread is connected with thread bush (22), and the thread bush (22) is fixedly connected on fixed cover (16) away from motion bar (2) one The middle part of side, side of the threaded rod (23) away from connecting plate (26) are fixedly connected with bull stick (24) through fixed cover (16);
Side of the chalk (21) away from threaded rod (23) is connected with the first rubber blanket (19), first rubber blanket (19) anti-slip veins (20) are offered close to the outer surface of chalk (21) side, the remote chalk (21) of first rubber blanket (19) Side is fixedly connected with buffer spring (18), and the one end of the buffer spring (18) away from the first rubber blanket (19) is fixedly connected on The side of fixed plate (17), side and the side of fixed cover (16) inwall of the fixed plate (17) away from buffer spring (18) are consolidated Fixed connection.
A kind of 2. compasses for teaching of fix stably according to claim 1, it is characterised in that:The fixing hole (5) Quantity is five, and five fixing holes (5) equidistantly distribute in the outer surface of telescopic mast (4) from top to down.
A kind of 3. compasses for teaching of fix stably according to claim 1, it is characterised in that:The telescopic mast (4) Side is fixedly connected with notice board (7), and the front of the notice board (7) is fixedly connected with digiboard (8).
A kind of 4. compasses for teaching of fix stably according to claim 1, it is characterised in that:Telescopic mast (4) position Limiting plate (14) is fixedly connected with below adapter sleeve (12), the limiting plate (14) is shaped as circle.
A kind of 5. compasses for teaching of fix stably according to claim 1, it is characterised in that:The geometrical clamp (27) Quantity is two, and two geometrical clamps (27) are symmetrically distributed in top and bottom of the connecting plate (26) away from threaded rod (23) side.
A kind of 6. compasses for teaching of fix stably according to claim 1, it is characterised in that:The geometrical clamp (27) is remote Inside from connecting rod (26) side is fixedly connected with the second rubber blanket (28), second rubber blanket (28) and geometrical clamp (27) Shape be circular arc.
A kind of 7. compasses for teaching of fix stably according to claim 1, it is characterised in that:Outside the handle (31) Surface is fixedly connected with rubber sleeve (32), and the rubber sleeve (32) is shaped as cylinder.
A kind of 8. compasses for teaching of fix stably according to claim 1, it is characterised in that:The two of the handle (31) Side is fixedly connected with limited location block (33), and the limited block (33) is shaped as cylinder.
A kind of 9. compasses for teaching of fix stably according to claim 8, it is characterised in that:The limited block (33) is remote Side from handle (31) is fixedly connected with hook (34), and the internal activity of the hook (34) is connected with lanyard (35).
CN201711023435.8A 2017-10-26 2017-10-26 A kind of compasses for teaching of fix stably CN107718953A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711023435.8A CN107718953A (en) 2017-10-26 2017-10-26 A kind of compasses for teaching of fix stably

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711023435.8A CN107718953A (en) 2017-10-26 2017-10-26 A kind of compasses for teaching of fix stably

Publications (1)

Publication Number Publication Date
CN107718953A true CN107718953A (en) 2018-02-23

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Application Number Title Priority Date Filing Date
CN201711023435.8A CN107718953A (en) 2017-10-26 2017-10-26 A kind of compasses for teaching of fix stably

Country Status (1)

Country Link
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108583084A (en) * 2018-05-28 2018-09-28 喻正江 A kind of compasses for teaching
CN108656801A (en) * 2018-05-08 2018-10-16 吴烁 A kind of mathematical education auxiliary teaching device applied to education and instruction
CN111251755A (en) * 2018-10-26 2020-06-09 刘小亮 Teaching compass ruler and use method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108656801A (en) * 2018-05-08 2018-10-16 吴烁 A kind of mathematical education auxiliary teaching device applied to education and instruction
CN108583084A (en) * 2018-05-28 2018-09-28 喻正江 A kind of compasses for teaching
CN111251755A (en) * 2018-10-26 2020-06-09 刘小亮 Teaching compass ruler and use method thereof

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