CN203920132U - Extending ruler - Google Patents
Extending ruler Download PDFInfo
- Publication number
- CN203920132U CN203920132U CN201420345428.5U CN201420345428U CN203920132U CN 203920132 U CN203920132 U CN 203920132U CN 201420345428 U CN201420345428 U CN 201420345428U CN 203920132 U CN203920132 U CN 203920132U
- Authority
- CN
- China
- Prior art keywords
- chi
- interior
- length
- outer chi
- width
- 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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- Drawing Aids And Blackboards (AREA)
Abstract
The utility model provides a kind of extending ruler, comprise interior chi and outer chi, interior chi width is a bit larger tham outer chi, the length of interior chi and outer chi is identical, outer chi hollow and have two faces to open wide, one of them open surface is positioned at outer chi length direction side, another open surface is positioned at outer chi width side, in outer chi inner chamber, perpendicular to chi wall, be provided with the cylinder retaining element that a diameter is D1, on outer chi inner chamber, each is provided with the cylinder guide groove that two parallel spacing are L1 along its length lower wall, the cylinder guide rail that two parallel spacing are L2 is set on interior chi along its length, L1=L2, interior chi middle part arranges the groove that a width is D2 along its length, D1=D2, it is inner that interior chi is embedded in outer chi, the cylinder guide groove of cylinder guide rail on interior chi on outer chi suits mutually, cylinder retaining element in outer chi inner chamber is through the groove of interior chi, one end near outer chi width open surface on interior chi is provided with a front end top, interior ulnar surface is protruded in front end top.
Description
Technical field
The utility model relates to a kind of ruler, especially extending ruler.
Background technology
Students in middle and primary schools' school work burden is always very heavy, while mapping with existing ruler, usually runs into ruler and falls short of and need to repeatedly move ruler and fulfil assignment, not only waste time and energy, and the straight line drawing for the second time with can not overlap completely for the first time.
Utility model content
The purpose of this utility model is the shortcoming falling short of with ruler for overcoming current mapping.
For achieving the above object, the technical solution adopted in the utility model is as follows:
A kind of extending ruler is provided, comprise interior chi and outer chi, interior chi width is a bit larger tham outer chi, the length of interior chi and outer chi is identical, outer chi hollow and have two faces to open wide, one of them open surface is positioned at outer chi length direction side, another open surface is positioned at outer chi width side, in outer chi inner chamber, perpendicular to chi wall, be provided with the cylinder retaining element that a diameter is D1, on outer chi inner chamber, each is provided with the cylinder guide groove that two parallel spacing are L1 along its length lower wall, the cylinder guide rail that two parallel spacing are L2 is set on interior chi along its length, L1=L2, interior chi middle part arranges the groove that a width is D2 along its length, D1=D2, it is inner that interior chi is embedded in outer chi, the cylinder guide groove of cylinder guide rail on interior chi on outer chi suits mutually, cylinder retaining element in outer chi inner chamber is through the groove of interior chi, one end near outer chi width open surface on interior chi is provided with a front end top, interior ulnar surface is protruded in front end top.
The utility model is simple in structure, by interior chi and the nested combining structure of outer chi, on the guide rail that interior chi arranges in chi inner chamber outside along its length, be free to slide, during setting-out, when outer chi length is inadequate, the nib of setting-out touches the front end top of interior chi while reaching the outer chi end, because front end top is the parts that slightly protrude with respect to interior ulnar side plane, under the effect of nib, interior chi is pulled out, can continue setting-out along interior chi, interior chi and outer chi total length are 360mm, much larger than the long limit of A4 paper, meet the daily operation of student completely required.Interior chi width is a bit larger tham outer chi, so nib, always along interior ulnar surface operation, so both guaranteed the continuity of institute's setting-out, and institute's setting-out does not have fracture or depression yet.
Accompanying drawing explanation
Fig. 1---the utility model structural representation;
Fig. 2---interior chi structural representation;
Fig. 3---interior chi groove and front end top partial structurtes schematic diagram;
Fig. 4---interior chi width front view;
Fig. 5---outer chi structural representation;
Fig. 6---outer chi width front view;
Fig. 7---outer chi inner-cavity structure schematic diagram;
Fig. 8---inside and outside chi scheme of installation;
Fig. 9---inside and outside chi scale schematic diagram.
In figure: 1, cylinder guide rail, 2, front end top, 3, groove, 4, cylinder retaining element, 5, cylinder guide groove.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As shown in the figure, whole extending ruler is consisted of jointly interior chi and outer chi, interior chi is provided with two parallel cylinder guide rails 1, front end top 2, middle part groove 3; Outer chi surrounding adopts semi-enclosed, and because interior chi is wider than outer chi, and interior chi needs outside free displacement in chi, therefore outer chi is removed in remaining all the other four faces of end face and bottom surface, has adjacent two faces not seal, all the other two face closures.Outer chi inside is provided with 4, four cylinder guide grooves 5 of cylinder retaining element, each two of above and below.Cylinder guide rail 1 can slidably reciprocate in cylinder guide groove 5, and the groove 3 at interior chi middle part is enclosed within on cylinder retaining element 4, has guaranteed the interior chi displacement in chi outside, and can not skid off completely.
During setting-out, when drawn straight length exceeds outer chi length, the front end that nib pushes up on interior chi comes directly towards 2 places, continues setting-out, and haul out interior chi under the effect of nib from outer chi front end top 2, can continue setting-out.Interior chi width is wider than outer chi, and in other words no matter when drawing which type of line, nib is all operation on interior chi, has so both guaranteed the continuity of the line that draws, does not also have fracture or depression.Interior chi hypotenuse design has guaranteed that nib contacts with the multi-angle of interior chi, is convenient to actual mapping.The scale opposite direction of interior chi and outer chi, if the length of outer chi and interior chi is 18cm, length is as shown in Figure 9 outer chi maximum length+interior chi and hauls out length, be 18+5=23cm, hence one can see that, and this chi maximum operation length is 36cm, completely enough students use generally.
Claims (1)
1. an extending ruler, it is characterized in that: comprise interior chi and outer chi, interior chi width is a bit larger tham outer chi, the length of interior chi and outer chi is identical, outer chi hollow and have two faces to open wide, one of them open surface is positioned at outer chi length direction side, another open surface is positioned at outer chi width side, in outer chi inner chamber, perpendicular to chi wall, be provided with the cylinder retaining element that a diameter is D1, on outer chi inner chamber, each is provided with the cylinder guide groove that two parallel spacing are L1 along its length lower wall, the cylinder guide rail that two parallel spacing are L2 is set on interior chi along its length, L1=L2, interior chi middle part arranges the groove that a width is D2 along its length, D1=D2, it is inner that interior chi is embedded in outer chi, the cylinder guide groove of cylinder guide rail on interior chi on outer chi suits mutually, cylinder retaining element in outer chi inner chamber is through the groove of interior chi, one end near outer chi width open surface on interior chi is provided with a front end top, interior ulnar surface is protruded in front end top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420345428.5U CN203920132U (en) | 2014-06-26 | 2014-06-26 | Extending ruler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420345428.5U CN203920132U (en) | 2014-06-26 | 2014-06-26 | Extending ruler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203920132U true CN203920132U (en) | 2014-11-05 |
Family
ID=51816000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420345428.5U Expired - Fee Related CN203920132U (en) | 2014-06-26 | 2014-06-26 | Extending ruler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203920132U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109177602A (en) * | 2018-11-16 | 2019-01-11 | 独山县教育局 | Ruler is used in the telescopic study of one kind |
-
2014
- 2014-06-26 CN CN201420345428.5U patent/CN203920132U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109177602A (en) * | 2018-11-16 | 2019-01-11 | 独山县教育局 | Ruler is used in the telescopic study of one kind |
| CN109177602B (en) * | 2018-11-16 | 2020-11-17 | 独山县教育局 | Telescopic ruler for study |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141105 Termination date: 20170626 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |