CN103522802A - Double-refill elliptic trammel - Google Patents
Double-refill elliptic trammel Download PDFInfo
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- CN103522802A CN103522802A CN201310502878.0A CN201310502878A CN103522802A CN 103522802 A CN103522802 A CN 103522802A CN 201310502878 A CN201310502878 A CN 201310502878A CN 103522802 A CN103522802 A CN 103522802A
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- guide rail
- slide block
- pen core
- gliding mass
- refill
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- Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
Abstract
The invention discloses a double-refill elliptic trammel and relates to the field of teaching aids. The double-refill elliptic trammel comprises an upper sliding body and a lower sliding body, wherein the middle of the upper sliding body and the middle of the lower sliding body are connected through a rotary shaft, both the upper sliding body and the lower sliding body can rotate freely around the rotary shaft, a first guide rail is arranged on the upper sliding body, a reel which is provided with a fastening screw is arranged at one end of the first guide rail, a first sliding block is arranged on the first guide rail and is located between the rotary shaft and the reel, and two lines with the same lengths are wound around the reel and enter the first sliding block at the same time; a second guide rail is arranged on the lower sliding block, the two sides of the rotary shaft are respectively provided with a refill sliding block, the refill sliding blocks are arranged on the second guide rail, nuts are further arranged on the refill sliding blocks and are used for fastening the positions of the refills, and the refill sliding blocks are both connected with an elastic device through nuts so that the refill sliding blocks can move in the guide rails under the action of the tensile force of a spring and the lines. The double-refill elliptic trammel has the advantages that no dead point exists, a user just needs to rotate the elliptic trammel by 180 degrees to draw a smooth integral oval, the focal length and the short axis of the oval can be set through degree scales, and therefore the size of the oval is quite accurate.
Description
Technical field
The present invention relates to teaching aid field, particularly a kind of pair of pen core ellipsograph.
Background technology
Existing Elliposgraph for teaching structure is comparatively simple, as application number: 200510047704.5, name is called the Chinese patent of " a kind of ellipsograph ", it comprises two bracing frames, and carrys out the distance between adjusting support frame by connecting rod, and this distance is elliptic focus distance, fine rule by two bracing frames around a circle, during use, fine rule length is fixed, and paintbrush around two bracing frames, one circle, draws oval track under fine rule guiding.
Such ellipsograph has some shortcomings, and oval focal length can accurately be set by rule, but minor axis length setting does not have similar means, can only lean on user from an estimation, thereby size is accurate not.And there is dead point in such ellipsograph, need two and just can draw whole ellipse, the smoothness of ellipse just has problem like this.
Summary of the invention
The technical problem to be solved in the present invention is that the oval size of existing ellipsograph drafting is accurate not, has dead point, inconvenient problem with use during drafting.
For solving the problems of the technologies described above, the invention provides a kind of pair of pen core ellipsograph, comprise: upper gliding mass and lower gliding mass, the middle part of described upper gliding mass is connected by rotating shaft with the middle part of described lower gliding mass, and described upper gliding mass and described lower gliding mass all can rotate freely around described rotating shaft;
Described upper gliding mass is provided with the first guide rail, and one end of described the first guide rail is provided with the reel with trip bolt, and described reel is tied with two lines that length is identical, and described trip bolt is for the release length of fixing described line; On described the first guide rail, between rotating shaft and described reel, be provided with the first slide block, described rotating shaft and be provided with the second slide block with the other end of described the first guide rail, described the first slide block and described the second slide block can be free to slide on described the first guide rail, and can pass through securing member fixed position;
Described lower gliding mass is provided with the second guide rail, the both sides that described the second guide rail is positioned at described rotating shaft are respectively equipped with a pen core slide block, on described pen core slide block, be also provided with nut, position for fastening described pen core, described pen core slide block is connected by nut with elastic force apparatus respectively, and pen core slide block can be moved under the pulling force of spring and line in guide rail.
In use, described two lines, through described the first slide block, after being wound around respectively two described pen core slide blocks, are fixed on described the second slide block; Described pen core slide block all, under the drive of described elastic force apparatus, has the trend moving to described the second rail end.
Preferably, described the first guide rail is groove shape guide rail, described the first slide block and described the second slide block slide along described the first guide rail, described securing member is holding screw, described upper gliding mass side is provided with the sulculus sliding for described holding screw, and described the first slide block and described the second slide block are provided with the screw coordinating with described holding screw.
Preferably, described the second guide rail is groove shape guide rail, and described pen core slide block slides along described the second guide rail.
Further preferred, described elastic force apparatus is for being located at respectively the end cap and the spring that is connected described end cap and described pen core slide block at described the second guide rail two ends.
Preferably, described rotating shaft comprises: nook closing member and needle guard, be provided with spring between described nook closing member and described needle guard.
Preferably, on described the first guide rail and described the second guide rail, be equipped with scale.
There is not dead point in ellipsograph of the present invention, and only needs Rotate 180 degree just can disposablely draw smooth whole ellipse, and oval focal length and minor axis can arrange by scale, thereby oval size is more accurate.
Accompanying drawing explanation
Fig. 1 is the structural representation of of the present invention pair of pen core ellipsograph.
Fig. 2 is the side view of the two pen core ellipsographs in Fig. 1.
The specific embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples are used for illustrating the present invention, but are not used for limiting the scope of the invention.
The specific embodiment of of the present invention pair of pen core ellipsograph as shown in Figure 1, comprising: upper gliding mass 1 and lower gliding mass 2, the middle part of the middle part of upper gliding mass 1 and lower gliding mass 2 is connected by rotating shaft 3, and upper gliding mass 1 and lower gliding mass 2 all can 3 rotate freely around the shaft.Rotating shaft 3 is comprised of nook closing member and needle guard, between nook closing member 15 and needle guard 16, is provided with spring, and nook closing member can shrink after pressurized in needle guard.
One end that upper gliding mass 1 is provided with the first guide rail 4, the first guide rails 4 of groove shape is provided with the reel 5 with trip bolt 6, and reel 5 is tied with two lines 17 that length is identical, and trip bolt 6 is for the release length of static line, on the first guide rail 4, between rotating shaft 3 and reel 5, be provided with the first slide block 7, rotating shaft 3 and and the other end of the first guide rail 4 between be provided with the second slide block 8, the first slide block 7 and the second slide block 8 can be free to slide on the first guide rail 4, and can pass through securing member 9 fixed positions, securing member 9 can be selected as holding screw, upper gliding mass 1 side is provided with the sulculus sliding for described holding screw, the first slide block 7 and the second slide block 8 are provided with the screw coordinating with holding screw, when holding screw unclamps, slide block can freely slide on the first guide rail 4, determine behind position, tightening holding screw fixes slide position.On the first guide rail 4, be also provided with scale, for determining the position of each slide block.
The both sides that the second guide rail 10, the second guide rails 10 that lower gliding mass 2 is provided with groove shape are positioned at rotating shaft 3 are respectively equipped with a pen core slide block 11, and pen core slide block 11 can slide along described the second guide rail.Two pen core slide blocks 11 are connected with elastic force apparatus 12 respectively, and elastic force apparatus 12, for being located at the end cap 13 and the spring 14 that is connected end cap 13 and pen core slide block 11 at the second guide rail 10 two ends, can move pen core slide block 13 under the pulling force of spring and line in guide rail 10.On pen core slide block 11, be also provided with nut, for the position of fastening pen core.On the second guide rail 10, be also provided with scale, for determining the position of pen core slide block 11.
In use, first by upper gliding mass 1 and the vertical setting of lower gliding mass 2, become flexible holding screw 6, regulate the position of the first slide block 7 and the second slide block 8 according to rule, these two positions are oval focus, tighten holding screw.Then from reel 5, pull out two lines 17 that length is the same, first through the first slide block 7, then be wound around respectively after two pen core slide blocks 11, be fixed on the second slide block 8.Then according to the scale on lower gliding mass 2, regulate the position of one of them pen core slide block 11, the line of pen core slide block 11 is oval minor axis, now pen core slide block 11 is all under the drive of elastic force apparatus 12, there is the trend moving to the second guide rail 10 ends, make pen core slide block 11 that line 17 is kept to tensioned state.Last user's left hand is held gliding mass 1 and the nook closing member of rotating shaft 3 is pressed down, and the right hand is held one end of lower gliding mass 2, and Rotate 180 ° completes an oval drafting.
There is not dead point in of the present invention pair of pen core ellipsograph, can disposablely draw smooth whole ellipse, and oval focal length and minor axis can arrange by scale, thereby oval size is more accurate.
Above embodiment is only for illustrating the present invention; and be not limitation of the present invention; the those of ordinary skill in relevant technologies field; without departing from the spirit and scope of the present invention; can also make a variety of changes and modification; therefore all technical schemes that are equal to also belong to category of the present invention, and scope of patent protection of the present invention should be defined by the claims.
Claims (6)
1. two pen core ellipsographs, is characterized in that, comprising: upper gliding mass and lower gliding mass, and the middle part of described upper gliding mass is connected by rotating shaft with the middle part of described lower gliding mass, and described upper gliding mass and described lower gliding mass all can rotate freely around described rotating shaft;
Described upper gliding mass is provided with the first guide rail, and one end of described the first guide rail is provided with the reel with trip bolt, and described reel is tied with two lines equal in length, and described trip bolt is for the release length of fixing described line; On described the first guide rail, between rotating shaft and described reel, be provided with the first slide block, described rotating shaft and and the other end of described the first guide rail between be provided with the second slide block, described the first slide block and described the second slide block can be free to slide on described the first guide rail, and can pass through securing member fixed position;
Described lower gliding mass is provided with the second guide rail, and the both sides that described the second guide rail is positioned at described rotating shaft are respectively equipped with a pen core slide block, is also provided with nut, for the position of fastening described pen core on described pen core slide block; Described pen core slide block is connected by nut with elastic force apparatus respectively, and described pen core slide block can be moved under the pulling force of spring and line in guide rail;
In use, described two lines, through described the first slide block, are wound around respectively after a described pen core slide block, are fixed on described the second slide block; Described pen core slide block all, under the drive of described elastic force apparatus, has the trend moving to described the second rail end.
2. as claimed in claim 1 pair of pen core ellipsograph, it is characterized in that, described the first guide rail is groove shape guide rail, described the first slide block and described the second slide block slide along described the first guide rail, described securing member is holding screw, described upper gliding mass side is provided with the sulculus sliding for described holding screw, and described the first slide block and described the second slide block are provided with the screw coordinating with described holding screw.
3. as claimed in claim 1 pair of pen core ellipsograph, is characterized in that, described the second guide rail is groove shape guide rail, and described pen core slide block slides along described the second guide rail.
4. as claimed in claim 3 pair of pen core ellipsograph, is characterized in that, described elastic force apparatus comprises: be located at respectively the end cap at described the second guide rail two ends, with the spring that is connected described end cap and described pen core slide block.
5. as claimed in claim 1 pair of pen core ellipsograph, is characterized in that, described rotating shaft comprises: nook closing member and needle guard, be provided with spring between described nook closing member and described needle guard.
6. as claimed in claim 1 pair of pen core ellipsograph, is characterized in that, on described the first guide rail and described the second guide rail, is equipped with scale.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310502878.0A CN103522802A (en) | 2013-10-23 | 2013-10-23 | Double-refill elliptic trammel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310502878.0A CN103522802A (en) | 2013-10-23 | 2013-10-23 | Double-refill elliptic trammel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103522802A true CN103522802A (en) | 2014-01-22 |
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ID=49925307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310502878.0A Pending CN103522802A (en) | 2013-10-23 | 2013-10-23 | Double-refill elliptic trammel |
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| Country | Link |
|---|---|
| CN (1) | CN103522802A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2111854U (en) * | 1991-06-07 | 1992-08-05 | 秦峰 | Ellipse, circular and hyperbola mapper |
| CN2310683Y (en) * | 1997-11-06 | 1999-03-17 | 杨振起 | Ellipse gauge |
| CN1222454A (en) * | 1998-01-09 | 1999-07-14 | 金锡润 | Combined conic-section plotter |
| CN201419591Y (en) * | 2009-03-16 | 2010-03-10 | 邹世成 | ellipsograph |
-
2013
- 2013-10-23 CN CN201310502878.0A patent/CN103522802A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2111854U (en) * | 1991-06-07 | 1992-08-05 | 秦峰 | Ellipse, circular and hyperbola mapper |
| CN2310683Y (en) * | 1997-11-06 | 1999-03-17 | 杨振起 | Ellipse gauge |
| CN1222454A (en) * | 1998-01-09 | 1999-07-14 | 金锡润 | Combined conic-section plotter |
| CN201419591Y (en) * | 2009-03-16 | 2010-03-10 | 邹世成 | ellipsograph |
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Application publication date: 20140122 |