CN210941086U - Length-adjustable mathematical teaching ruler - Google Patents
Length-adjustable mathematical teaching ruler Download PDFInfo
- Publication number
- CN210941086U CN210941086U CN201922088158.XU CN201922088158U CN210941086U CN 210941086 U CN210941086 U CN 210941086U CN 201922088158 U CN201922088158 U CN 201922088158U CN 210941086 U CN210941086 U CN 210941086U
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- Prior art keywords
- ruler
- limiting
- groove
- spring
- fixing
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- 238000000034 method Methods 0.000 abstract description 5
- 238000010276 construction Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
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Abstract
The utility model discloses a mathematical teaching ruler with adjustable length, which comprises a ruler body, a first ruler and a second ruler, wherein the first ruler and the second ruler are connected in chutes at two sides of the ruler body in a sliding way; the ruler body is also provided with a first limiting groove, and the first limiting groove is positioned at the bottom of the sliding groove and is communicated with the sliding groove; a spring is arranged in the first fixing cavity, and the first limiting block is elastically connected in the first fixing cavity through the spring; first spacing inslot sliding connection has spacing, spacing bottom surface is equipped with the fixed chamber of second stopper, second, is equipped with the second spring in the fixed intracavity of second, the second stopper passes through second spring elastic connection at the fixed intracavity of second. The utility model discloses be equipped with stop device between ruler body and first ruler, second ruler, can effectually prevent taking up the in-process of putting down or carrying, landing in first ruler, second ruler follow ruler body avoids first ruler, second ruler to produce the damage because of dropping.
Description
Technical Field
The utility model relates to a teaching aid field specifically is a length adjustable mathematics teaching ruler.
Background
The ruler is widely applied to mathematics, measurement, engineering and other disciplines, is a very common length measuring instrument, is extremely common, is usually used for measuring shorter distance or drawing straight lines, and teachers in the field of mathematics can use the teaching aid, and teachers in other fields can use the teaching aid frequently and are very wide in application.
However, the conventional ruler for teaching is large in size, teachers carry textbooks and are inconvenient to carry after teaching, and in the prior art, a patent (application number: CN201420623694. X) provides a ruler convenient to adjust, the size of the ruler can be reduced, the measurement length is increased, but the ruler I and the ruler II are easy to slide off in the carrying process, and damage is caused.
Disclosure of Invention
The utility model aims at providing a length adjustable mathematics teaching ruler avoids the ruler to produce the damage because of dropping, and this device limit structure adopts elastic construction, draws the convenience, and it is convenient to use.
In order to realize the purpose, the technical scheme of the utility model is that:
the utility model discloses a length-adjustable mathematical teaching ruler, which comprises a ruler body, a first ruler and a second ruler, wherein chutes and limiting devices are arranged on two sides of the ruler body, and the first ruler and the second ruler are connected in the chutes on two sides of the ruler body in a sliding manner; the ruler body is also provided with a first limiting groove, and the first limiting groove is positioned at the bottom of the sliding groove and is communicated with the sliding groove; a first limiting block and a first fixing cavity are arranged in the first limiting groove, and the first fixing cavity and the first limiting groove are integrally formed; a spring is arranged in the first fixing cavity, and the first limiting block is elastically connected in the first fixing cavity through the spring; the first limiting groove is connected with a limiting strip in a sliding mode, the bottom surface of the limiting strip is provided with a second limiting block and a second fixing cavity, a second spring is arranged in the second fixing cavity, and the second limiting block is elastically connected into the second fixing cavity through the second spring; the bottoms of the first ruler and the second ruler are provided with second limiting grooves, and the second limiting grooves are matched with the first limiting grooves; grooves are formed in one sides, close to the ruler body, of the first ruler and the second ruler, and the grooves are symmetrically distributed in the upper end and the lower end of the first ruler and the lower end of the second ruler respectively; the limiting device comprises a fixing groove, a fixing strip and a limiting spring, the length of the fixing strip is consistent with that of the groove, and the fixing strip is elastically connected in the fixing groove through the limiting spring.
The bottom of the limiting strip is provided with a pull ring, and the pull ring and the limiting strip are integrally formed.
The ruler body, the first ruler and the second ruler are all provided with scales.
The first limiting block and the second limiting block are both arc-shaped and consistent in size.
The included angle between the fixed groove and the level of the ruler body is 60-90 degrees.
Compared with the prior art, the utility model has the advantages and positive effect be:
this device is equipped with stop device between ruler body and first ruler, second ruler, can effectually prevent taking up the in-process of putting down or carrying, and first ruler, second ruler landing from the ruler body avoids first ruler, second ruler to produce the damage because of dropping, and this device limit structure adopts elastic construction, draws the convenience, and it is convenient to use.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a front view of the present invention;
FIG. 3 is a schematic view of the limiting device of the present invention;
in the figure: 1. a straightedge body; 2. a chute; 3. a first straightedge; 4. a second limit groove; 5. a first limit groove; 6. a second straightedge; 7. a first stopper; 8. a limiting strip; 9. a second fixed cavity; 10. a second limiting block; 11. a spring; 12. a first fixed cavity; 13. a second spring; 14. a fixing strip; 15. fixing grooves; 16. and (4) a groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
As shown in fig. 1, 2 and 3, the length-adjustable mathematics teaching ruler comprises a ruler body 1, a first ruler 3 and a second ruler 6, wherein chutes 2 are arranged on two sides of the ruler body 1, the first ruler 3 and the second ruler 6 are slidably connected in the chutes 2 on two sides of the ruler body 1, a first limiting groove 5 is further arranged on the ruler body 1, the first limiting groove 5 is positioned at the bottom of the chute 2 and is mutually communicated with the chute 2, a first limiting block 7 and a first fixing cavity 12 are arranged in the first limiting groove 5, the first fixing cavity 12 and the first limiting groove 5 are integrally formed, a spring 11 is arranged in the first fixing cavity 12, and the first limiting block 7 is elastically connected in the first fixing cavity 12 through the spring 11;
first spacing inslot 5 sliding connection has spacing 8, spacing 8 bottom surfaces are equipped with second stopper 10, the fixed chamber 9 of second, be equipped with spring 11 in the fixed chamber 9 of second, second stopper 10 passes through spring 11 elastic connection in the fixed chamber 9 of second.
The first limiting block 7 and the second limiting block 10 are arc-shaped and have the same size.
It is worth pointing out that the bottoms of the first straight ruler 3 and the second straight ruler 6 are provided with second limiting grooves, and the second limiting grooves are matched with the first limiting grooves 5.
And a pull ring is arranged at the bottom of the limiting strip 8 and is integrally formed with the limiting strip 8.
In addition, scales are arranged on the ruler body 1, the first ruler 3 and the second ruler 6.
One side of the first ruler 3 and one side of the second ruler 6, which are close to the ruler body 1, are provided with grooves 16, and the grooves 16 are respectively and symmetrically distributed at the upper end and the lower end of the first ruler 3 and the second ruler 6.
It is important to point out that two sides of the ruler body 1 are provided with limiting devices.
Preferably, the limiting device comprises a fixing groove 15, a fixing strip 14 and a second spring 13, wherein the length of the fixing strip 14 is consistent with that of the groove 16, and the fixing strip 14 is elastically connected in the fixing groove 15 through the second spring 13.
In addition, an included angle between the fixing groove 15 and the level of the ruler body 1 is 60-90 degrees.
When carrying this device, first ruler, second ruler slide to the spout bottom of ruler body, and spacing inserts first spacing inslot and extends to the second spacing inslot, block first ruler, second ruler, prevent that first ruler, second ruler from droing, and at this in-process, first stopper slides second stopper rear, and crisscross setting breeds spacing and drops, and ruler body length shortens this moment conveniently carries.
When using this device, use the pull ring to take out spacing from first spacing groove, roll-off in first ruler, the second ruler follow the spout increases ruler body length.
This device is equipped with stop device between ruler body and first ruler, second ruler, can effectually prevent taking up the in-process of putting down or carrying, and first ruler, second ruler landing from the ruler body avoids first ruler, second ruler to produce the damage because of dropping, and this device limit structure adopts elastic construction, draws the convenience, and it is convenient to use.
Based on the embodiments of the present invention, any modifications, equivalent replacements, improvements, etc. made by other embodiments obtained by a person of ordinary skill in the art without creative efforts shall be included in the protection scope of the present invention.
Claims (6)
1. The length-adjustable mathematical teaching ruler is characterized by comprising a ruler body, a first ruler and a second ruler, wherein chutes and limiting devices are arranged on two sides of the ruler body, and the first ruler and the second ruler are connected in the chutes on two sides of the ruler body in a sliding manner; the ruler body is also provided with a first limiting groove, and the first limiting groove is positioned at the bottom of the sliding groove and is communicated with the sliding groove; a first limiting block and a first fixing cavity are arranged in the first limiting groove, and the first fixing cavity and the first limiting groove are integrally formed; a spring is arranged in the first fixing cavity, and the first limiting block is elastically connected in the first fixing cavity through the spring; the first limiting groove is connected with a limiting strip in a sliding mode, the bottom surface of the limiting strip is provided with a second limiting block and a second fixing cavity, a second spring is arranged in the second fixing cavity, and the second limiting block is elastically connected into the second fixing cavity through the second spring; the bottoms of the first ruler and the second ruler are provided with second limiting grooves, and the second limiting grooves are matched with the first limiting grooves; grooves are formed in one sides, close to the ruler body, of the first ruler and the second ruler, and the grooves are symmetrically distributed in the upper end and the lower end of the first ruler and the lower end of the second ruler respectively; the limiting device comprises a fixing groove, a fixing strip and a limiting spring, the length of the fixing strip is consistent with that of the groove, and the fixing strip is elastically connected in the fixing groove through the limiting spring.
2. A length adjustable mathematical teaching ruler as claimed in claim 1 wherein: the bottom of the limiting strip is provided with a pull ring, and the pull ring and the limiting strip are integrally formed.
3. A length adjustable mathematical teaching ruler as claimed in claim 1 wherein: scales are arranged on the ruler body, the first ruler and the second ruler.
4. A length adjustable mathematical teaching ruler as claimed in claim 1 wherein: the first limiting block and the second limiting block are both arc-shaped and consistent in size.
5. A length adjustable mathematical teaching ruler as claimed in claim 1 wherein: the included angle between the fixed groove and the level of the ruler body is 60-90 degrees.
6. A length adjustable mathematical teaching ruler as claimed in claim 1 wherein: the first limiting blocks and the second limiting blocks are arranged in a staggered mode, and the second limiting blocks are close to the ruler body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922088158.XU CN210941086U (en) | 2019-11-28 | 2019-11-28 | Length-adjustable mathematical teaching ruler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922088158.XU CN210941086U (en) | 2019-11-28 | 2019-11-28 | Length-adjustable mathematical teaching ruler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210941086U true CN210941086U (en) | 2020-07-07 |
Family
ID=71395476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922088158.XU Expired - Fee Related CN210941086U (en) | 2019-11-28 | 2019-11-28 | Length-adjustable mathematical teaching ruler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210941086U (en) |
-
2019
- 2019-11-28 CN CN201922088158.XU patent/CN210941086U/en not_active Expired - Fee Related
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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: 20200707 |