CN208021051U - A kind of ruler tool of mathematical education - Google Patents
A kind of ruler tool of mathematical education Download PDFInfo
- Publication number
- CN208021051U CN208021051U CN201721173226.7U CN201721173226U CN208021051U CN 208021051 U CN208021051 U CN 208021051U CN 201721173226 U CN201721173226 U CN 201721173226U CN 208021051 U CN208021051 U CN 208021051U
- Authority
- CN
- China
- Prior art keywords
- ruler
- pedestal
- negative tube
- piston rod
- combined
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Electrically Operated Instructional Devices (AREA)
Abstract
The utility model discloses a kind of ruler of mathematical education tools, including pedestal, the back-end sealing of the pedestal is connected with a sucker, it states and is provided with a negative tube at the front end face of pedestal, a piston head is combined in the negative tube, sealing is formed between the piston head and the negative pressure inside pipe wall, a piston rod is connected at the front end of the piston head, that one end of the piston rod far from the piston head connects pelmatozoa, the pedestal is connected with angle scale by external screw thread, a rotary sleeve is provided on the pipe shaft of the negative tube, it is combined with bearing between the rotary sleeve and the negative tube, ruler item is provided at the outer wall of the rotary sleeve, the front end face of the ruler item is provided through groove body, it is combined with deck in the groove body, it is provided with T-shaped card slot on the left of the ruler item, it is combined with ruler in the card slot；The present apparatus can be adsorbed on blackboard, and teacher is helped to draw the circular arc line of more standard.
Description
Technical field
The utility model is related to a kind of ruler of mathematical education tools.
Background technology
During mathematical education, it is often necessary to draw circular arc, the existing circular arc technique of painting is mainly the bikini technique of painting, to operation
It is more demanding, and the camber line degree of the circular arc drawn is poor, more unsightly, partly has the teachers association of patients with OCD to repeat more
Secondary picture circular arc line extends time in classroom, reduces efficiency of giving lessons, and the outside diameter of protractor is fixed, therefore can only draw
Angle line, and circular arc line is not helped.
Based on the above issues, it is desirable to provide one kind can be adsorbed on blackboard, and teacher is helped to draw the circular arc of more standard
The ruler of the mathematical education of line has.
Utility model content
The technical problem to be solved by the utility model is to provide one kind to be adsorbed on blackboard, help teacher draw compared with
For the ruler tool of the mathematical education of the circular arc line of standard.
The utility model is achieved through the following technical solutions：
A kind of ruler tool of mathematical education, including pedestal, the back-end sealing of the pedestal are connected with a sucker, the sucker
With pipe portion, the outside of the pedestal has external screw thread, is provided with a negative tube at the front end face of the pedestal, the pipe portion is matched
The negative tube is closed, a piston head is combined in the negative tube, is formed between the piston head and the negative pressure inside pipe wall
It seals, is connected with a piston rod at the front end of the piston head, that one end of the piston rod far from the piston head is connected with
Shank, the pedestal are connected with angle scale by external screw thread, and the front end face of the angle scale is provided with angle index, the angle
Be embedded with a horizon rule at the front end face of disk, be provided with a rotary sleeve on the pipe shaft of the negative tube, the rotary sleeve with it is described
It is combined with bearing between negative tube, ruler item is provided at the outer wall of the rotary sleeve, the front end face of the ruler item is provided through
Groove body is combined with deck in the groove body, is provided with a screw rod at the outer wall of the deck, at the right positions of the ruler item
It is provided through the sliding slot of the screw rod, the screw rod passes through that one end fits of the sliding slot to have nut, the ruler item
Left side is provided with T-shaped card slot, and the upper end of the card slot runs through the ruler item, ruler is combined in the card slot, described
The front end face of ruler has ruler scale, the finger for coordinating the ruler scale integrally formed with one at the outer wall of the deck
Needle, the ruler item coordinate the peep hole of the angle index being provided at the rotary sleeve position.
Preferably, the piston rod is cross star piston rod, and the piston rod is solid construction, and the piston rod is modeling
Expect material.
Preferably, that one end that the piston rod extends to outside the negative tube is provided with a stop sleeve, the stop
Set cooperation, by the way that stop sleeve is arranged, is avoided since generated negative pressure will in sucker between the negative tube and the shank
Piston head is adsorbed and is gone back again, it is ensured that the present apparatus can be firmly adsorbed on blackboard.
Preferably, the anti-slip tank with an arc at the outer wall of the shank is convenient for drawing piston rod by anti-slip tank.
Preferably, it is combined with magnifying glass in the peep hole, identification strip is provided at the shaft core position of the magnifying glass,
Angle index can be amplified by magnifying glass, convenient for observation scale.
The use of present classroom teaching, chalk is fewer and fewer, and the chalk dust that when chalk use generates can be to the pharynx of teacher
Larynx and lung cause irreversible injury, therefore mostly carry out classroom instruction using the clipboard cooperation free ink pen of white, more defend
It is raw, and the smooth surface that the sucker in the present apparatus can be directed to clipboard is reliably adsorbed, and avoids falling, and recycles bearing
Support that ruler item is rotated, setting-out is more smooth, and resistance is smaller.
The utility model has the beneficial effects that：The position of deck is adjustable in the present apparatus, according to the diameter of the circular arc of required picture
Adjust the position of deck, after the completion of deck adjustment, the locking of deck can be realized in hand nutting, conveniently draws preferable circular arc
Line, while the angle of circular arc line can be controlled by angle index, setting-out more standard, the structure of the present apparatus is relatively simple,
Cost is more cheap, and operation is more convenient, is suitble to promote the use of.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, other drawings may also be obtained based on these drawings.
Fig. 1 is the front view of the utility model；
Fig. 2 is the left view of the utility model；
Fig. 3 is the right view of ruler item；
Fig. 4 is the front view of stop sleeve.
Specific implementation mode
All features disclosed in this specification or disclosed all methods or in the process the step of, in addition to mutually exclusive
Feature and/or step other than, can combine in any way.
This specification（Including any accessory claim, abstract and attached drawing）Disclosed in any feature, except non-specifically chatting
It states, can be replaced by other alternative features that are equivalent or have similar purpose.That is, unless specifically stated, each feature is only
It is an example in a series of equivalent or similar characteristics.
A kind of ruler of mathematical education as shown in Figure 1, Figure 2, Figure 3 and Figure 4 has, including pedestal 1, after the pedestal 1
End is sealedly connected with a sucker 2, and the sucker 2 has pipe portion（It is not shown）, the outside of the pedestal 1 has external screw thread, described
A negative tube 3 is provided at the front end face of pedestal 1, the pipe portion coordinates the negative tube 3, is combined in the negative tube 3
One piston head（It is not shown）, sealing is formed between 3 inner wall of the piston head and the negative tube, is connected at the front end of the piston head
It is connected to a piston rod 4, that one end of the piston rod 4 far from the piston head connects pelmatozoa 5, and the pedestal 1 passes through outer spiral shell
Line is connected with angle scale 6, and the front end face of the angle scale 6 is provided with angle index 601, at the front end face of the angle scale 6 in
Embedded with a horizon rule 7, a rotary sleeve 8 is provided on the pipe shaft of the negative tube 3, between the rotary sleeve 8 and the negative tube 3
It is combined with bearing（It is not shown）, ruler item 9 is provided at the outer wall of the rotary sleeve 8, and the front end face of the ruler item 9 is provided through
Groove body 901 is combined with deck 10 in the groove body 901, and a screw rod 11, the ruler item are provided at the outer wall of the deck 10
The sliding slot 12 of the screw rod 11 is provided through at 9 right positions, the screw rod 11 passes through that one end of the sliding slot 12
It is combined with nut 13, the left side of the ruler item 9 is provided with T-shaped card slot 14, and the ruler item is run through in the upper end of the card slot 14
9, be combined with ruler 15 in the card slot 14, the front end face of the ruler 15 has a ruler scale 16, the deck 10 it is outer
The pointer 17 for coordinating the ruler scale 16 integrally formed with one at wall, the ruler item 9 is at 8 position of the rotary sleeve
It is provided with the peep hole 18 for coordinating the angle index 601.
A preferred embodiment in the utility model, the piston rod 4 are cross star piston rod, the piston rod 4
For solid construction, the piston rod 4 is plastic material.
A preferred embodiment in the utility model, the piston rod 4 extend to that one end outside the negative tube 3
It is provided with a stop sleeve 444, the stop sleeve 444 coordinates between the negative tube 3 and the shank 5, by the way that stop is arranged
Set is avoided since piston head is adsorbed and gone back by generated negative pressure again in sucker, it is ensured that the present apparatus can be firmly adsorbed on
On blackboard.
A preferred embodiment in the utility model, the anti-slip tank 555 with an arc at the outer wall of the shank 5,
It is convenient for drawing piston rod by anti-slip tank.
A preferred embodiment in the utility model is combined with magnifying glass 19, the amplification in the peep hole 18
It is provided with identification strip 20 at the shaft core position of mirror 19, angle index can be amplified by magnifying glass, convenient for observation scale.
The use of present classroom teaching, chalk is fewer and fewer, and the chalk dust that when chalk use generates can be to the pharynx of teacher
Larynx and lung cause irreversible injury, therefore mostly carry out classroom instruction using the clipboard cooperation free ink pen of white, more defend
It is raw, and the smooth surface that the sucker in the present apparatus can be directed to clipboard is reliably adsorbed, and avoids falling, and recycles bearing
Support that ruler item is rotated, setting-out is more smooth, and resistance is smaller.
The utility model has the beneficial effects that：The position of deck is adjustable in the present apparatus, according to the diameter of the circular arc of required picture
Adjust the position of deck, after the completion of deck adjustment, the locking of deck can be realized in hand nutting, conveniently draws preferable circular arc
Line, while the angle of circular arc line can be controlled by angle index, setting-out more standard, the structure of the present apparatus is relatively simple,
Cost is more cheap, and operation is more convenient, is suitble to promote the use of.
Above description is only a specific implementation of the present invention, but the scope of protection of the utility model is not limited to
In this, any change or replacement expected without creative work should be covered within the scope of the utility model.
Therefore, the scope of protection of the utility model should be determined by the scope of protection defined in the claims.
Claims (5)
1. a kind of ruler of mathematical education has, it is characterised in that：Including pedestal, the back-end sealing of the pedestal is connected with a suction
There is pipe portion, the outside of the pedestal to have external screw thread, a negative pressure is provided at the front end face of the pedestal for disk, the sucker
Pipe, the pipe portion coordinate the negative tube, and a piston head, the piston head and the negative tube are combined in the negative tube
Sealing is formed between inner wall, is connected with a piston rod at the front end of the piston head, the piston rod is far from the piston head
That one end connects pelmatozoa, and the pedestal is connected with angle scale by external screw thread, and the front end face setting of the angle scale is angled
Scale is embedded with a horizon rule at the front end face of the angle scale, a rotary sleeve is provided on the pipe shaft of the negative tube, described
It is combined with bearing between rotary sleeve and the negative tube, ruler item, the front end of the ruler item are provided at the outer wall of the rotary sleeve
Face is provided through groove body, and deck is combined in the groove body, and a screw rod, the ruler item are provided at the outer wall of the deck
Right positions at be provided through the sliding slot of the screw rod, the screw rod passes through that one end fits of the sliding slot to have spiral shell
Mother, T-shaped card slot is provided on the left of the ruler item, and the upper end of the card slot is run through the ruler item, matched in the card slot
Conjunction has ruler, the front end face of the ruler to have ruler scale, coordinate integrally formed with one at the outer wall of the deck described straight
The pointer of ruler scale, the ruler item coordinate the peep hole of the angle index being provided at the rotary sleeve position.
2. the ruler of mathematical education according to claim 1 has, it is characterised in that：The piston rod is cross radial pistons
Bar, the piston rod are solid construction, and the piston rod is plastic material.
3. the ruler of mathematical education according to claim 1 has, it is characterised in that：The piston rod extends to the negative pressure
That one end outside pipe is provided with a stop sleeve, and the stop sleeve cooperation is between the negative tube and the shank.
4. the ruler of mathematical education according to claim 1 has, it is characterised in that：There is an arc at the outer wall of the shank
The anti-slip tank of shape.
5. the ruler of mathematical education according to claim 1 has, it is characterised in that：Amplification is combined in the peep hole
Mirror is provided with identification strip at the shaft core position of the magnifying glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721173226.7U CN208021051U (en) | 2017-09-14 | 2017-09-14 | A kind of ruler tool of mathematical education |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721173226.7U CN208021051U (en) | 2017-09-14 | 2017-09-14 | A kind of ruler tool of mathematical education |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208021051U true CN208021051U (en) | 2018-10-30 |
Family
ID=63897560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721173226.7U Expired - Fee Related CN208021051U (en) | 2017-09-14 | 2017-09-14 | A kind of ruler tool of mathematical education |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208021051U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110001246A (en) * | 2019-02-19 | 2019-07-12 | 萧淑芬 | Triangular compass and use triangular compass drafting triangle and circular method |
| CN111231548A (en) * | 2020-02-17 | 2020-06-05 | 张传水 | Teaching device |
-
2017
- 2017-09-14 CN CN201721173226.7U patent/CN208021051U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110001246A (en) * | 2019-02-19 | 2019-07-12 | 萧淑芬 | Triangular compass and use triangular compass drafting triangle and circular method |
| CN111231548A (en) * | 2020-02-17 | 2020-06-05 | 张传水 | Teaching device |
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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: 20181030 Termination date: 20200914 |