CN202573505U - Concentric compass - Google Patents
Concentric compass Download PDFInfo
- Publication number
- CN202573505U CN202573505U CN 201220084223 CN201220084223U CN202573505U CN 202573505 U CN202573505 U CN 202573505U CN 201220084223 CN201220084223 CN 201220084223 CN 201220084223 U CN201220084223 U CN 201220084223U CN 202573505 U CN202573505 U CN 202573505U
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- Prior art keywords
- concentric
- pencil
- pen
- spring
- spring groove
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Abstract
The utility model discloses a concentric compass, which comprises a rotating handle (1), a fixed foot (2) and a movable foot (3), wherein the fixed foot (2) and the movable foot (3) are meshed with each other, and are correspondingly hinged on the rotating handle (1); the inner side face of the movable foot (3) is provided with a spring groove (11) and a screw hole which is communicated with the spring groove (11); the spring groove (11) is provided with a tightening spring (10); after a screw rod (6) passes through the tightening spring (10) and the screw hole from the inner side, the screw rod is sleeved with a double-pen-holder body (4) and is fixed through a nut (5); a pencil (8) is arranged at one end of the double-pen-holder body (4); a fountain pen (7) is arranged at the other end of the double-pen-holder body (4); after being rotated by 180 degrees, the fountain pen (7) is concentric with the pencil (8); the outer side face of the movable foot (3) is provided with upper and lower elliptical positioning blocks (9); and the central line of the double-pen-holder body (4) is provided with concave surfaces which correspond to the upper and lower elliptical positioning blocks (9). After the structure is adopted, the concentric compass has the advantages of simple and compact structure, rapidness and convenience for switching between the pencil and the fountain pen, high concentricity, high drawing speed, high efficiency, good quality and the like.
Description
Technical field
The utility model relates to a kind of drawing instrument, the particularly a kind of concentric compasses that can change pencil and water-color paintbrush picture circle fast.
Background technology
Compasses are drawing instruments commonly used of a kind of manual plotting, are mainly used in the picture circle, draw circular arc, five equilibrium, do vertical line and bisector of angle etc.Present common compasses generally are made up of rotary handle, fixing feet, movable pin; Fixing feet and movable pin are meshing with each other and correspondence is hinged on the rotary handle; The end of fixing feet is provided with needle point, and the fixed form of needle point can be divided into movable and fixed, and the end of movable pin is provided with drawing pen; Drawing pen can be divided into pencil and water-color paintbrush, and fixed form can be divided into fixed, movable and detachable; During use bipod is separated into required radius, needle point is fixed on the center of circle, rotates rotary handle and makes drawing pen draw circular arc along radius.But in use there is following weak point in existing common compasses: with a piece of paper upper drawing circle the time, general earlier with the pencil drafting, when needs repaint with water-color paintbrush; Need pencil is pulled down, refilling water-color paintbrush could use, and dismounting back water-color paintbrush is because can't be concentric with pencil; Need adjust the radius of water-color paintbrush again; Cause the picture bowlder dual lines can occur, not only waste time and energy, lower efficiency, and reduced drawing quality.For this reason, many manufacturers and knowledgeable people develop and study to the problems referred to above, but do not find reasonably solution so far as yet.
Summary of the invention
For overcoming the above-mentioned weak point that existing common compasses exist, the purpose of the utility model provide a kind of simple and compact for structure, pencil and water-color paintbrush change quick and convenient, concentricity is high, picture speed is fast, efficient is high, the measured concentric compasses of matter.
The utility model solves the problems of the technologies described above the technical scheme that is adopted; It comprises rotary handle, fixing feet, movable pin; Fixing feet and movable pin are meshing with each other and correspondence is hinged on the rotary handle, and the screw that the medial surface of said movable pin is provided with spring groove and communicates with spring groove, spring groove are provided with tightens spring; Screw rod passes from the inboard to be tightened behind spring and the screw sheathed pair of penholder body and is fixed by nut; One of two penholder bodies is equipped with pencil, and water-color paintbrush is equipped with in the other end, concentric with pencil behind the water-color paintbrush Rotate 180 degree.
The lateral surface of said movable pin is provided with the lower trapezoid locating piece, and the center line of two penholder bodies is provided with and the corresponding concave surface of last lower trapezoid locating piece.
After adopting said structure, following advantage and effect are arranged compared with prior art, the one, when needing, rotate pair penholder bodies 180 and spend and just can realize with pencil and water-color paintbrush conversion picture bowlder, change simple and convenient, speed is fast, can improve drawing efficiency greatly.The 2nd, because movable pin is provided with the last lower trapezoid locating piece that is used for two penholders location, can guarantee the concentricity of pencil and water-color paintbrush nib, guarantee drawing quality.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Fig. 2 changes the structural representation of state for the utility model half way around.
Fig. 3 is the fit structure sketch map of the utility model.
1 rotary handle wherein, 2 fixing feet, 3 movable pin, 4 pairs of penholder bodies, 5 nuts, 6 screw rods, 7 water-color paintbrushes, 8 pencils, lower trapezoid locating piece on 9,10 tighten spring, 11 spring grooves.
The specific embodiment
Fig. 1, Fig. 2 and shown in Figure 3; Be the specific embodiments of a kind of concentric compasses of the utility model, it comprises rotary handle 1, fixing feet 2, movable pin 3, and fixing feet 2 is meshing with each other with movable pin 3 and correspondence is hinged on the rotary handle 1; The screw that the medial surface of said movable pin 3 is provided with spring groove 11 and communicates with spring groove 11; Spring groove 11 is provided with tightens spring 10, and screw rod 6 passes from the inboard and tightens sheathed pair of penholder body 4 and fixing by nut 5 behind spring 10 and the screw, and one of two penholder bodies 4 is equipped with pencil 8; Water-color paintbrush 7 is equipped with in the other end, and is concentric with pencil 8 behind the water-color paintbrush 7 Rotate 180 degree.The lateral surface of said movable pin 3 is provided with lower trapezoid locating piece 9; The center line of two penholder bodies 4 is provided with and last lower trapezoid locating piece 9 corresponding concave surfaces; Tighten spring 10 and make two penholder body 4 horizontal directions that certain operating range arranged, rotation nut 5 can be regulated the elastic force that resets of two penholder bodies 4.When needs are changed with water-color paintbrush 7 with pencil 8 each other; Rotate two penholder bodies 4, two penholder bodies 4 outwards move also outwards pulling screw rod 6 along the inclined-plane of last lower trapezoid locating piece 9, and spring 10 is tightened in screw rod 6 compressions; After two penholder bodies 4 rotate 180 degree; Under the elastic force effect of tightening spring 10, the concave surface of two penholder bodies 4 cooperates the location with last lower trapezoid locating piece 9 again, thereby accomplishes the mutual conversion of pencil 8 and water-color paintbrush 7.
Claims (2)
1. concentric compasses; Comprise rotary handle (1), fixing feet (2), movable pin (3); Fixing feet (2) and movable pin (3) are meshing with each other and correspondence is hinged on the rotary handle (1), and it is characterized in that: the screw that the medial surface of said movable pin (3) is provided with spring groove (11) and communicates with spring groove (11), spring groove (11) are provided with tightens spring (10); Screw rod (6) passes from the inboard tightens sheathed pair of penholder body (4) and fixing by nut (5) behind spring (10) and the screw; One of two penholder bodies (4) is equipped with pencil (8), and water-color paintbrush (7) is equipped with in the other end, concentric with pencil (8) behind water-color paintbrush (7) the Rotate 180 degree.
2. concentric compasses according to claim 1 is characterized in that: the lateral surface of said movable pin (3) is provided with lower trapezoid locating piece (9), and the center line of two penholder bodies (4) is provided with and the corresponding concave surface of last lower trapezoid locating piece (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220084223 CN202573505U (en) | 2012-03-08 | 2012-03-08 | Concentric compass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220084223 CN202573505U (en) | 2012-03-08 | 2012-03-08 | Concentric compass |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202573505U true CN202573505U (en) | 2012-12-05 |
Family
ID=47242950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220084223 Expired - Fee Related CN202573505U (en) | 2012-03-08 | 2012-03-08 | Concentric compass |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202573505U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104163063A (en) * | 2014-06-12 | 2014-11-26 | 安栋 | Concentric radius-positioning compasses |
| CN110962495A (en) * | 2019-12-30 | 2020-04-07 | 白睿初 | Compasses |
-
2012
- 2012-03-08 CN CN 201220084223 patent/CN202573505U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104163063A (en) * | 2014-06-12 | 2014-11-26 | 安栋 | Concentric radius-positioning compasses |
| CN110962495A (en) * | 2019-12-30 | 2020-04-07 | 白睿初 | Compasses |
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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: 20121205 Termination date: 20150308 |
|
| EXPY | Termination of patent right or utility model |