CN107618297A - A kind of Portable teaching shrinkage-rule - Google Patents
A kind of Portable teaching shrinkage-rule Download PDFInfo
- Publication number
- CN107618297A CN107618297A CN201710826935.9A CN201710826935A CN107618297A CN 107618297 A CN107618297 A CN 107618297A CN 201710826935 A CN201710826935 A CN 201710826935A CN 107618297 A CN107618297 A CN 107618297A
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- CN
- China
- Prior art keywords
- secondary ruler
- rib
- scale
- main scale
- ruler
- 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.)
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- Drawing Aids And Blackboards (AREA)
Abstract
The present invention relates to a kind of Portable teaching shrinkage-rule, the first secondary ruler and the second secondary ruler including main scale, being slidably matched with the main scale, the main scale, first secondary ruler and second secondary ruler include scale plate and the rib formed from the scale plate upper end horizontal buckling, the main scale, first secondary ruler, second secondary ruler are connected by being opened in the rail structure on each scale plate and on each rib, and the both ends of the main scale correspond to the connection end of first secondary ruler and the connection end installation stopping means of second secondary ruler.The teaching shrinkage-rule has portability high, scalable, stable without the advantages of the feeling that pause using smooth, mapping.
Description
Technical field
The present invention relates to teaching equipment technical field, more particularly to a kind of Portable teaching shrinkage-rule.
Background technology
During teachers ' teaching, especially mathematics, physics and chemistry teacher must will use ruler, but blackboard is excessive, utilizes ruler
Mapping needs the size long enough of ruler, and the teaching gauge being equipped with classroom is easily damaged, and can not often be used, therefore big portion
Divide teacher all to provide ruler for oneself, for imparting knowledge to students, if still using common ruler, due to oversized, be extremely unfavorable for teacher and take
Band, often colliding with causes ruler spoilage high, short life；In addition, conventional ruler is made by relatively thin stainless steel metal, or
The relatively thin wooden structures of person, when being mapped with ruler, impetus is poor, and chalk is easily separated from ruler, it is necessary to be doubly cautious.
In order to solve the problem present on, people are seeking a kind of preferable technical solution always.
The content of the invention
The invention aims to overcome the deficiencies in the prior art, there is provided a kind of Portable teaching shrinkage-rule.
The present invention is to be achieved through the following technical solutions：
A kind of Portable teaching shrinkage-rule, including main scale, the first secondary ruler for being slidably matched with the main scale and second are secondary
Chi, the main scale, first secondary ruler and second secondary ruler include scale plate and from the scale plate upper end horizontal bucklings
The rib of formation, the main scale, first secondary ruler, second secondary ruler are by being opened on each scale plate and on each rib
Rail structure is connected, and the both ends of the main scale correspond to the connection end of first secondary ruler and the connection end of second secondary ruler
Stopping means is installed, the stopping means includes being opened in the limited impression at the main scale both ends, is opened in described first respectively
The connection end of secondary ruler and the connection end of second secondary ruler and with the limited impression coordinate limited step and be arranged on
The elastic roller that the limited step is embedded in the limited impression is simultaneously always driven at the main scale both ends, the elastic roller with
The rib of first secondary ruler and second secondary ruler is slidably matched, described when the limited step is embedded in the limited impression
The rib of main scale, first secondary ruler and second secondary ruler is located at same level.
Further, the inside edge of the limited impression is hypotenuse.
Further, rib chute is opened up on the outside of the rib of first secondary ruler and second secondary ruler, the main scale
The rib guide rail for opening up and coordinating with the rib chute is surveyed in rib.
Further, the scale plate outer end of first secondary ruler and second secondary ruler opens up scale plate chute, the master
Scale plate the inner of chi opens up the scale panel guide coordinated with the scale plate chute.
Further, it is carved with scale on the outside of the rib of the main scale.
Compared with prior art, the beneficial effects of the invention are as follows：The present invention have portability it is high, it is scalable, using suitable
Sliding, mapping stabilization is without the advantages of the feeling that pause.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the structural representation of stopping means in the present invention.
In figure：1. main scale；2. the first secondary ruler；3. the second secondary ruler；4. limited impression；5. limited step；6. elastic roller；7.
Rib guide rail；8. rib；9. scale plate.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Refer to a kind of Portable teaching shrinkage-rule shown in Fig. 1, including main scale 1, be slidably matched with the main scale 1
First secondary ruler 2 and the second secondary ruler 3, stretching structure ensure that ruler can stretch, and length can adjust, and be easy to carry after shortening,
It is easy to use after elongation, the main scale 1, first secondary ruler 2 and second secondary ruler 3 included scale plate 9 and from the quarters
The rib 8 that plate upper end horizontal buckling is formed is spent, rib can increase force area during chalk mapping, will not be small because of impetus
And draw askew, scale is carved with the outside of the rib of the main scale 18, and the scale uses when two secondary rulers are not stretched out, first secondary ruler 2
Rib chute 7 is opened up with the outside of rib 8 of second secondary ruler 3, surveys and opens up and the rib chute in the rib of the main scale 1
The 7 rib guide rails 8 coordinated；The outer end of scale plate 9 of first secondary ruler 2 and second secondary ruler 3 opens up scale plate chute, described
Scale plate the inner of main scale 1 opens up the scale panel guide coordinated with the scale plate chute, its object is to during the stretching of two secondary rulers,
Press close to the face of blackboard always plane, the guide rail structure comprising fin is arranged in main scale 1 and surveyed.
As shown in Fig. 2 the both ends of the main scale 1 correspond to the connection end of first secondary ruler 2 and the company of second secondary ruler 3
Connect end installation stopping means.The stopping means includes being opened in the limited impression 4 at the both ends of main scale 1, is opened in institute respectively
State the connection end of the first secondary ruler 2 and the connection end of second secondary ruler 3 and the limited step 5 coordinated with the limited impression 4
And installed in the both ends of main scale 1 and the elastic roller 6 that always drives the limited step 5 to be embedded in the limited impression 4,
The elastic roller 6 and the rib of first secondary ruler 2 and second secondary ruler 3 are slidably matched, the inner edge of the limited impression 4
Edge is hypotenuse, when the limited step 5 is embedded in the limited impression 4, the main scale 1, first secondary ruler 2 and second pair
The rib of chi 3 is located at same level.
Its mechanism, the free end of secondary ruler is stretched, secondary ruler slides in and out along rail structure, when positive stop lug boss is moved to limit
When at the groove 4 of position, positive stop lug boss embedded limited impression 4 in the presence of elastic roller 6, each rib is concordant, starts to draw,
Due to concordant structure and rib structure, drawing processes without pause, it is smooth and stably, it is spacing by secondary ruler to internal pressure after having used
The inner of groove 4 is hypotenuse, it is easy to just skids off therewith, returns to initial position.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should be included in the scope of the protection.
Claims (5)
- A kind of 1. Portable teaching shrinkage-rule, it is characterised in that：The first secondary ruler including main scale, being slidably matched with the main scale With the second secondary ruler, the main scale, first secondary ruler and second secondary ruler include scale plate and from the scale plate upper ends The rib that horizontal buckling is formed, the main scale, first secondary ruler, second secondary ruler are by being opened on each scale plate and respectively Rail structure on rib is connected, and the both ends of the main scale correspond to the connection end of first secondary ruler and second secondary ruler Connection end installation stopping means, the stopping means include be opened in the main scale both ends limited impression, be opened in respectively The connection end of first secondary ruler and the connection end of second secondary ruler and with the limited impression coordinate limited step with And drive installed in the main scale both ends and always the elastic roller in the limited step insertion limited impression, the bullet Property roller and the rib of first secondary ruler and second secondary ruler be slidably matched, the limited step is embedded in the limited impression When, the rib of the main scale, first secondary ruler and second secondary ruler is located at same level.
- A kind of 2. Portable teaching shrinkage-rule according to claim 1, it is characterised in that：The inner edge of the limited impression Edge is hypotenuse.
- A kind of 3. Portable teaching shrinkage-rule according to claim 1, it is characterised in that：First secondary ruler and described Rib chute is opened up on the outside of the rib of second secondary ruler, the rib for opening up and coordinating with the rib chute is surveyed in the rib of the main scale Guide rail.
- A kind of 4. Portable teaching shrinkage-rule according to claim 1, it is characterised in that：First secondary ruler and described The scale plate outer end of second secondary ruler opens up scale plate chute, and scale plate the inner of the main scale opens up matches somebody with somebody with the scale plate chute The scale panel guide of conjunction.
- A kind of 5. Portable teaching shrinkage-rule according to claim 1, it is characterised in that：On the outside of the rib of the main scale It is carved with scale.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710826935.9A CN107618297A (en) | 2017-09-14 | 2017-09-14 | A kind of Portable teaching shrinkage-rule |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710826935.9A CN107618297A (en) | 2017-09-14 | 2017-09-14 | A kind of Portable teaching shrinkage-rule |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107618297A true CN107618297A (en) | 2018-01-23 |
Family
ID=61089816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710826935.9A Withdrawn CN107618297A (en) | 2017-09-14 | 2017-09-14 | A kind of Portable teaching shrinkage-rule |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107618297A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107839385A (en) * | 2017-11-13 | 2018-03-27 | 许昌市建安区第三高级中学 | A kind of extension type set square |
| CN108725043A (en) * | 2018-06-05 | 2018-11-02 | 山东女子学院 | A kind of teaching ruler |
| CN109177602A (en) * | 2018-11-16 | 2019-01-11 | 独山县教育局 | Ruler is used in the telescopic study of one kind |
| CN112706544A (en) * | 2021-01-22 | 2021-04-27 | 薛云帆 | International economy and trade chart making device |
-
2017
- 2017-09-14 CN CN201710826935.9A patent/CN107618297A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107839385A (en) * | 2017-11-13 | 2018-03-27 | 许昌市建安区第三高级中学 | A kind of extension type set square |
| CN107839385B (en) * | 2017-11-13 | 2021-08-24 | 泉州市桥东商贸有限公司 | Retractable set square |
| CN108725043A (en) * | 2018-06-05 | 2018-11-02 | 山东女子学院 | A kind of teaching ruler |
| CN109177602A (en) * | 2018-11-16 | 2019-01-11 | 独山县教育局 | Ruler is used in the telescopic study of one kind |
| CN112706544A (en) * | 2021-01-22 | 2021-04-27 | 薛云帆 | International economy and trade chart making device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180123 |
|
| WW01 | Invention patent application withdrawn after publication |