CN208438946U - A kind of mathematics teaching aid - Google Patents
A kind of mathematics teaching aid Download PDFInfo
- Publication number
- CN208438946U CN208438946U CN201721406576.3U CN201721406576U CN208438946U CN 208438946 U CN208438946 U CN 208438946U CN 201721406576 U CN201721406576 U CN 201721406576U CN 208438946 U CN208438946 U CN 208438946U
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- CN
- China
- Prior art keywords
- shell
- teaching aid
- mathematics teaching
- ruler item
- free end
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Abstract
The utility model provides a kind of mathematics teaching aid, belongs to teaching equipment field, and mathematics teaching aid includes shell and tape measure portion；Tape measure portion includes the ruler item that surface indicates size, has accommodating cavity in shell, ruler silver lap is received in accommodating cavity；Shell is provided with the jack for being inserted into chalk at the retracting center of ruler item；Ruler item is fixed at the outside wall surface of jack close to one end of jack.Pass through mathematics teaching aid provided by the utility model, setting-out rounding tool is narrowed down to one can be with portable range, and it can guarantee the stability of setting-out rounding process by sucker, after jack insertion chalk on mathematics teaching aid two hands can be avoided to fight and be not easy the case where cooperating and occur with one-handed performance.And the setting of stop part then improves the precision of drawing.
Description
Technical field
The utility model relates to teaching equipment fields, in particular to a kind of mathematics teaching aid.
Background technique
Currently, the volume of mathematics teaching aid is all bigger, so that upper class hour is all inconvenient to carry every time for instructors, or even when operation
It is all easy to cause right-hand man to fight since equipment is larger.And when carrying out geometry curriculum, it has to carry out essence by teaching aid
Standard maps and then embodies some geometry and pushes over.
Utility model content
The utility model provides a kind of mathematics teaching aid, it is intended to solve above-mentioned existing for mathematics teaching aid in the prior art ask
Topic.
The utility model is realized in this way:
A kind of mathematics teaching aid, including shell and tape measure portion；
The tape measure portion includes the ruler item that surface indicates size, has accommodating cavity in the shell, the ruler silver lap is received in
In the accommodating cavity；
The shell is provided with the jack for being inserted into chalk at the retracting center of the ruler item；
The ruler item is fixed at the outside wall surface of the jack close to one end of the jack.
In the utility model preferred embodiment, the ruler item far from the jack one end be free end, it is described from
The shell is stretched out by holding from the opening of the shell, the free end is provided with for the free end to be fixed on blackboard
Fixing piece.
In the utility model preferred embodiment, the fixing piece is sucker, and the shell includes the be oppositely arranged
Side and second side, the Pan Kou of the sucker is towards first side.
In the utility model preferred embodiment, the free end is provided with mounting head, is provided in the mounting head
Mounting hole, the sucker are inserted into the mounting hole far from one end of the Pan Kou.
In the utility model preferred embodiment, the surface of shell is set between first side and described second side
It is equipped with the first plane, in the blackboard eraser that the first plane is provided with.
In the utility model preferred embodiment, the mathematics teaching aid further includes stop part, and the stop part includes convex
The side of the opening is arranged in block and slide plate, first plane, and the shell is provided with only in the other side of the opening
Block piece mounting hole, the slide plate are arranged in the accommodating cavity, and the convex block is fixedly mounted on the slide plate far from the accommodating
The one side of chamber, the convex block stretch out the accommodating cavity by the stop part.
In the utility model preferred embodiment, the slide plate is separated into first segment and second segment by the convex block, institute
It states second segment and is provided with stop bit head for abutting the ruler item far from one end of the first segment.
In the utility model preferred embodiment, the ruler item is made using stainless steel strip.
In the utility model preferred embodiment, the ruler item with a thickness of 0.10mm.
A kind of mathematics teaching aid, including shell and tape measure portion；
The tape measure portion includes the ruler item that surface indicates size, has accommodating cavity in the shell, the ruler silver lap is received in
In the accommodating cavity；
One end that the ruler item stretches out the shell is free end, and the free end is from described in the stretching of the opening of the shell
Shell, the free end are provided with the fixing piece for being fixed on the free end on blackboard；
The jack for being inserted into chalk is provided on the shell, the jack is arranged in the shell close to the opening
Side.
The beneficial effects of the utility model are: by mathematics teaching aid provided by the utility model, by setting-out rounding tool contracting
Small to one can guarantee the stability of setting-out rounding process by sucker with portable range, on mathematics teaching aid
Jack insertion chalk after two hands can be avoided to fight and be not easy the case where cooperating and occur with one-handed performance.And the setting of stop part is then
Improve the precision of drawing.
Detailed description of the invention
It, below will be to required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
The attached drawing used is briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore not
It should be considered as the restriction to range, for those of ordinary skill in the art, without creative efforts,
It can also be obtained according to these attached drawings other relevant attached drawings.
Fig. 1 is the structural schematic diagram at the first visual angle of the mathematics teaching aid that the utility model embodiment one provides；
Fig. 2 be in Fig. 1 II-II to cross-sectional view；
Fig. 3 is the structural schematic diagram at the second visual angle of the mathematics teaching aid that the utility model embodiment one provides；
Fig. 4 is the structural schematic diagram at the third visual angle for the mathematics teaching aid that the utility model embodiment one provides；
Fig. 5 is the cross-sectional view for the mathematics teaching aid that the utility model embodiment two provides.
Icon: 001- mathematics teaching aid；100- shell；The first plane of 101-；103- extension block；110- accommodating cavity；111- is inserted
Hole；113- opening；115- stop part mounting hole；200- tape measure portion；210- ruler item；The free end 211-；213- mounting head；215- inhales
Disk；2151- mounting rod；300- stop part；310- convex block；330- slide plate；331- first segment；333- second segment；335- stop bit head.
Specific embodiment
It is practical below in conjunction with this to keep the purposes, technical schemes and advantages of the utility model embodiment clearer
The technical solution in the utility model embodiment is clearly and completely described in attached drawing in novel embodiment, shows
So, described embodiment is a part of embodiment of the utility model, rather than whole embodiments.It is practical based on this
Embodiment in novel, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment is fallen within the protection scope of the utility model.Therefore, the implementation to the utility model provided in the accompanying drawings below
The detailed description of mode is not intended to limit the range of claimed invention, but is merely representative of the utility model
Selected embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making creative labor
Every other embodiment obtained under the premise of dynamic, fall within the protection scope of the utility model.
In the description of the present invention, it should be understood that indicating position or the term of positional relationship are based on attached drawing
Shown in orientation or positional relationship, be merely for convenience of describing the present invention and simplifying the description, rather than indication or suggestion institute
The equipment or element of finger must have a particular orientation, is constructed and operated in a specific orientation, therefore should not be understood as to this reality
With novel limitation.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be
Mechanical connection, is also possible to be electrically connected；It can be directly connected, two can also be can be indirectly connected through an intermediary
The interaction relationship of connection or two elements inside element.It for the ordinary skill in the art, can basis
Concrete condition understands the concrete meaning of above-mentioned term in the present invention.
In the present invention unless specifically defined or limited otherwise, fisrt feature is on or below second feature
It may include that the first and second features directly contact, also may include that the first and second features are not direct contacts but pass through it
Between other characterisation contact.Moreover, fisrt feature is on second feature, top and above include fisrt feature the
Right above two features and oblique upper, or first feature horizontal height is merely representative of higher than second feature.Fisrt feature is in the second spy
Under sign, lower section and fisrt feature included below be directly below and diagonally below the second feature, or be merely representative of fisrt feature level
Height is less than second feature.
Embodiment one
A kind of mathematics teaching aid 001 is present embodiments provided, referring to Fig. 1, this mathematics teaching aid 001 includes 100 He of shell
Tape measure portion 200.
Referring to Fig. 2, tape measure portion 200 includes ruler item 210, on the surface of ruler item 210, mark is equipped with size, due to ruler item 210
With two sides, so the size scale of different units can be set in two sides.Ruler item 210 is made using stainless steel, ruler item 210
Make ruler item 210 that there is certain elasticity with a thickness of 0.10mm, carrying out heat treatment to the ruler item 210 crispaturaed slightly in production makes
Obtaining ruler item 210 has enough toughness, and retains a part of stress and make ruler item 210 can be with automatic curling.
Accommodating cavity 110 is provided in shell 100, ruler item 210 furls in accommodating cavity 110, and ruler item 210 is far from retracting center
One end be free end 211, free end 211 from the opening 113 of shell 100 stretch out shell 100, pull ruler item from free end 211
The degree of shrinkage of 210 i.e. changeable ruler items 210, so that free end 211 can extract out after ruler item 210 tightens.And unclamp free end
211, ruler item 210 can be automatically replied by elasticity, so that free end 211 is withdrawn close to retracting center.
It is provided with fixing piece on free end 211, free end 211 can be fixed on blackboard by fixing piece, and is led to
It crosses and pulls the degree of shrinkage that shell 100 realizes change ruler item 210, is i.e. the length of change free end 211 stretching shell 100.In this reality
It applies in example, fixing piece is sucker 215, can will be free by sucker 215 due to blackboard surface smoothness with higher
End 211 is fixed on blackboard.When needing picture straight line, free end 211 can be fixed on blackboard by sucker 215, be pulled out
Ruler item 210 retouches line to ruler item 210 using chalk, straight line can be obtained, and can learn straight line by the scale on ruler item 210
Length.
Fig. 2, Fig. 3 and Fig. 4 are please referred to, shell 100 is provided centrally with jack 111 in the retracting of ruler item 210, and ruler item 210 leans on
One end of nearly jack 111 is fixedly connected on the shell of jack 111.The internal diameter and chalk outer diameter of jack 111 are suitable, and jack 111 can
Think that through-hole may be blind hole, as long as chalk can be fixed on shell 100.Shell 100 includes being oppositely arranged
First side and second side can be by the first sides for exposing chalk or second side towards blackboard after chalk is installed on shell 100
It is write.When needing picture circle, free end 211 can be fixed on blackboard by sucker 215, by exposing chalk
First side or second side are rotated towards blackboard around sucker 215.It is rotated for the ease of shell 100 relative to sucker 215, at this
In embodiment, the first side of Pan Kou direction of sucker 215.And the one end of sucker 215 far from Pan Kou rotationally with free end 211
Connection.Helix can also be drawn by way of uniformly pulling out ruler item 210 in rotation.
Free end 211 is provided with mounting head 213, mounting hole is provided in mounting head 213, sucker 215 is far from Pan Kou's
One end is provided with mounting rod 2151, and mounting rod 2151, which is inserted into mounting hole, makes sucker 215 be rotatably connected with mounting head 213.
In order to avoid mounting rod 2151 is dropped out out of mounting hole, mounting hole may be designed as through-hole, the one end of mounting rod 2151 far from Pan Kou
It stretches out to form Extension Head from mounting hole, in the end point of Extension Head, setting abuts block, abuts block and abuts mounting head 213.
100 surface of shell is additionally provided with the first plane 101, in the present embodiment, first between the first side and second side
The side of opening 113 is arranged in plane 101.First plane 101 can be convenient the placement of shell 100.It is arranged in the first plane 101
Blackboard eraser can also use mathematics teaching aid 001 as blackboard eraser when drawing.
In the present embodiment, in order to guarantee the Experience Degree of picture bowlder, it is additionally provided with stop part 300.Stop part 300 includes solid
Surely the convex block 310 and slide plate 330 connected, between the first side and second side, 113 sides far from the first plane 101 of opening are set
It is equipped with stop part mounting hole 115, the stop part mounting hole 115 that convex block 310 passes through is stretched out from accommodation groove, and the setting of slide plate 330 exists
In accommodation groove, the width for being wider than stop part mounting hole 115 of slide plate 330, therefore slide plate 330 can not be from stop part mounting hole 115
Inside skid off, and can be by sliding of the convex block 310 in stop part mounting hole 115 so that slide plate 330 slides in accommodation groove.It is sliding
Piece 330 is separated into first segment 331 and second segment 333 by convex block 310, and first segment 331 is pacified for avoiding convex block 310 from scratching from stop part
Hole 115 is filled, second segment 333 is provided with stop bit head 335 far from one end of first segment 331, when convex block 310 is slided into close to opening
When 113, stop bit head 335 abuts ruler item 210, and ruler item can be prevented by blocking ruler item 210 by stop bit head 335 and accommodation groove inner wall
210 movement, so that the length that ruler item 210 stretches out shell 100 is fixed.
By mathematics teaching aid 001 provided by the utility model, setting-out rounding tool, which is narrowed down to one, to be carried
Range, and can be guaranteed to draw lines the stability of rounding process by sucker 215, the jack 111 on mathematics teaching aid 001 is inserted into powder
After pen two hands can be avoided to fight and be not easy the case where cooperating and occur with one-handed performance.And the setting of stop part 300 then improves drawing
Precision.
Embodiment two
A kind of mathematics teaching aid 001 is present embodiments provided, referring to Fig. 5, this mathematics teaching aid 001 includes 100 He of shell
Tape measure portion 200.
Tape measure portion 200 includes ruler item 210, and on the surface of ruler item 210, mark is equipped with size, since ruler item 210 has two sides, institute
The size scale of different units can be set with two sides.Ruler item 210 is made using stainless steel, ruler item 210 with a thickness of
0.10mm makes ruler item 210 have certain elasticity, is heat-treated the ruler item 210 crispaturaed slightly so that ruler item in production
210 have enough toughness, and retain a part of stress and make ruler item 210 can be with automatic curling.
Accommodating cavity 110 is provided in shell 100, ruler item 210 furls in accommodating cavity 110, and ruler item 210 is close to retracting center
One end be fixed in accommodating cavity 110, the one end of ruler item 210 far from retracting center is free end 211, and free end 211 is from shell
100 opening 113 stretches out shell 100, the degree of shrinkage of the i.e. changeable ruler item 210 of ruler item 210 is pullled from free end 211, so that ruler
Free end 211 can extract out after item 210 tightens.And free end 211 is unclamped, ruler item 210 can be automatically replied by elasticity, thus
So that free end 211 is withdrawn close to retracting center.
It is provided with fixing piece on free end 211, free end 211 can be fixed on blackboard by fixing piece, and is led to
It crosses and pulls the degree of shrinkage that shell 100 realizes change ruler item 210, is i.e. the length of change free end 211 stretching shell 100.In this reality
It applies in example, fixing piece is sucker 215, can will be free by sucker 215 due to blackboard surface smoothness with higher
End 211 is fixed on blackboard.When needing picture straight line, free end 211 can be fixed on blackboard by sucker 215, be pulled out
Ruler item 210 retouches line to ruler item 210 using chalk, straight line can be obtained, and can learn straight line by the scale on ruler item 210
Length.
Free end 211 is provided with mounting head 213, mounting hole is provided in mounting head 213, sucker 215 is far from Pan Kou's
One end is provided with mounting rod 2151, and mounting rod 2151, which is inserted into mounting hole, makes sucker 215 be rotatably connected with mounting head 213.
In order to avoid mounting rod 2151 is dropped out out of mounting hole, mounting hole may be designed as through-hole, the one end of mounting rod 2151 far from Pan Kou
It stretches out to form Extension Head from mounting hole, in the end point of Extension Head, setting abuts block, abuts block and abuts mounting head 213.
100 surface of shell is additionally provided with the first plane 101, in the present embodiment, first between the first side and second side
The side of opening 113 is arranged in plane 101.First plane 101 can be convenient the placement of shell 100.
The side of opening 113 is provided with extension block 103 in the first plane 101, is provided with jack on extension block 103
111.The internal diameter and chalk outer diameter of jack 111 are suitable, and jack 111 can may be blind hole for through-hole, as long as can be by chalk
Fixed on shell 100.Shell 100 includes that the first side being oppositely arranged and second side, chalk are installed on shell 100
Afterwards, it can be write by the first side or second side of exposing chalk towards blackboard.When needing picture circle, suction can be passed through
Free end 211 is fixed on blackboard by disk 215, by the first side or second side of exposing chalk towards blackboard around sucker 215
Rotation.It is rotated for the ease of shell 100 relative to sucker 215, in the present embodiment, the first side of Pan Kou direction of sucker 215.
And the one end of sucker 215 far from Pan Kou is rotationally connect with free end 211.It can also be by uniformly pulling out ruler in rotation
The mode of item 210 draws helix.And when drawing straight line, it can also be realized by being inserted into the chalk of slot, during bracing wire only
Ruler item 210 is overlapped with the line that front is finished substantially can draw more accurately straight line.
In the present embodiment, in order to guarantee the Experience Degree of picture bowlder, it is additionally provided with stop part 300.Stop part 300 includes solid
Surely the convex block 310 and slide plate 330 connected, between the first side and second side, 113 sides far from the first plane 101 of opening are set
It is equipped with stop part mounting hole 115, the stop part mounting hole 115 that convex block 310 passes through is stretched out from accommodation groove, and the setting of slide plate 330 exists
In accommodation groove, the width for being wider than stop part mounting hole 115 of slide plate 330, therefore slide plate 330 can not be from stop part mounting hole 115
Inside skid off, and can be by sliding of the convex block 310 in stop part mounting hole 115 so that slide plate 330 slides in accommodation groove.It is sliding
Piece 330 is separated into first segment 331 and second segment 333 by convex block 310, and first segment 331 is pacified for avoiding convex block 310 from scratching from stop part
Hole 115 is filled, second segment 333 is provided with stop bit head 335 far from one end of first segment 331, when convex block 310 is slided into close to opening
When 113, stop bit head 335 abuts ruler item 210, and ruler item can be prevented by blocking ruler item 210 by stop bit head 335 and accommodation groove inner wall
210 movement, so that the length that ruler item 210 stretches out shell 100 is fixed.
By mathematics teaching aid 001 provided by the utility model, setting-out rounding tool, which is narrowed down to one, to be carried
Range, and can be guaranteed to draw lines the stability of rounding process by sucker 215, the jack 111 on mathematics teaching aid 001 is inserted into powder
After pen two hands can be avoided to fight and be not easy the case where cooperating and occur with one-handed performance.And the setting of stop part 300 then improves drawing
Precision.
Above description is merely a prefered embodiment of the utility model, is not intended to limit the utility model, for
For those skilled in the art, various modifications and changes may be made to the present invention.All spirit and original in the utility model
Within then, any modification, equivalent replacement, improvement and so on be should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of mathematics teaching aid, which is characterized in that including shell and tape measure portion；
The tape measure portion includes the ruler item that surface indicates size, has accommodating cavity in the shell, and the ruler silver lap is received in described
In accommodating cavity；
The shell is provided with the jack for being inserted into chalk at the retracting center of the ruler item；
The ruler item is fixed at the outside wall surface of the jack close to one end of the jack.
2. mathematics teaching aid according to claim 1, which is characterized in that the one end of the ruler item far from the jack is freely
The shell is stretched out from the opening of the shell in end, the free end, and the free end is provided with for consolidating the free end
The fixing piece being scheduled on blackboard.
3. mathematics teaching aid according to claim 2, which is characterized in that the fixing piece is sucker, and the shell includes phase
To the first side of setting and second side, the Pan Kou of the sucker is towards first side.
4. mathematics teaching aid according to claim 3, which is characterized in that the free end is provided with mounting head, the installation
Mounting hole is provided on head, the sucker is inserted into the mounting hole far from one end of the Pan Kou.
5. mathematics teaching aid according to claim 3, which is characterized in that the surface of shell is in first side and described
The first plane is provided between two sides, in the blackboard eraser that the first plane is provided with.
6. mathematics teaching aid according to claim 5, which is characterized in that the mathematics teaching aid further includes stop part, described to stop
Block piece includes convex block and slide plate, and the side of the opening is arranged in first plane, and the shell is another the opening
Side is provided with stop part mounting hole, and the slide plate is arranged in the accommodating cavity, and it is remote that the convex block is fixedly mounted on the slide plate
One side from the accommodating cavity, the convex block stretch out the accommodating cavity by the stop part.
7. mathematics teaching aid according to claim 6, which is characterized in that the slide plate by the convex block be separated into first segment and
Second segment, the second segment are provided with the stop bit head for abutting the ruler item far from one end of the first segment.
8. mathematics teaching aid according to claim 1, which is characterized in that the ruler item is made using stainless steel strip.
9. mathematics teaching aid according to claim 6, which is characterized in that the ruler item with a thickness of 0.10mm.
10. a kind of mathematics teaching aid, which is characterized in that including shell and tape measure portion；
The tape measure portion includes the ruler item that surface indicates size, has accommodating cavity in the shell, and the ruler silver lap is received in described
In accommodating cavity；
One end that the ruler item stretches out the shell is free end, and the shell is stretched out from the opening of the shell in the free end
Body, the free end are provided with the fixing piece for being fixed on the free end on blackboard；
The jack for being inserted into chalk is provided on the shell, the shell is arranged in close to the one of the opening in the jack
Side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721406576.3U CN208438946U (en) | 2017-10-26 | 2017-10-26 | A kind of mathematics teaching aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721406576.3U CN208438946U (en) | 2017-10-26 | 2017-10-26 | A kind of mathematics teaching aid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208438946U true CN208438946U (en) | 2019-01-29 |
Family
ID=65095722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721406576.3U Expired - Fee Related CN208438946U (en) | 2017-10-26 | 2017-10-26 | A kind of mathematics teaching aid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208438946U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111717094A (en) * | 2020-06-28 | 2020-09-29 | 中国重汽集团成都王牌商用车有限公司 | Stay cord device and car |
-
2017
- 2017-10-26 CN CN201721406576.3U patent/CN208438946U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111717094A (en) * | 2020-06-28 | 2020-09-29 | 中国重汽集团成都王牌商用车有限公司 | Stay cord device and car |
| CN111717094B (en) * | 2020-06-28 | 2022-09-20 | 中国重汽集团成都王牌商用车有限公司 | Stay cord device and car |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190129 Termination date: 20201026 |