CN106827889A - A kind of three scriber compasses - Google Patents
A kind of three scriber compasses Download PDFInfo
- Publication number
- CN106827889A CN106827889A CN201710222748.XA CN201710222748A CN106827889A CN 106827889 A CN106827889 A CN 106827889A CN 201710222748 A CN201710222748 A CN 201710222748A CN 106827889 A CN106827889 A CN 106827889A
- Authority
- CN
- China
- Prior art keywords
- scriber
- bar
- centering
- compasses
- platform
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L9/00—Circular curve-drawing or like instruments
- B43L9/02—Compasses
Landscapes
- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
The invention discloses a kind of three scribers compasses, including centering bar and scriber, the centering bar top is provided with one section of tapped platform, and the centering bar is provided with the external screw thread matched with platform internal thread, and the centering bar bottom is provided with vertical guarantee disk and centering is top；The scriber quantity is at least three, and the scriber includes scriber bar and connector, and the connector includes connection ring and connection sheet, and the connection ring is enclosed within platform, and the tie point of the connection sheet and scriber bar is in same level.The present invention by traditional center of circle, radius draw circule method, three strokes and dots circule methods carry out rational synthesis, can be realized on a compasses it is various in the case of can facilitate picture to justify, simple structure is easy to operate.
Description
Technical field
The present invention relates to a kind of compasses, and in particular to a kind of three scribers compasses.
Background technology
At present, compasses can describe traditional circular curve and rounded face as a kind of conventional teaching instrument of existing teaching,
But can implement under having under the conditions of the known center of circle, radius etc., and during for being used under some practical environments, some may
A part for known circle, or even the center of circle is likely to it is difficult to when determination, its circular horizon is more difficult to decide, it is necessary to use chi,
Compasses and pen could be completed by analysis of ruling, and completion is got up unusual trouble.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of three scribers compasses, and traditional center of circle, radius are drawn into circule method,
Three strokes and dots circule methods carry out rational synthesis, can be realized on a compasses it is various in the case of can facilitate picture to justify, structure letter
It is single, it is easy to operate.
The technical proposal for solving the technical problem of the invention is：A kind of three scriber compasses, including centering bar and scriber,
The centering bar top is provided with one section of tapped platform, and the centering bar is provided with the outer spiral shell matched with platform internal thread
Line, the centering bar bottom is provided with vertical guarantee disk and centering is top；The scriber quantity is at least three, and the scriber includes
Scriber bar and connector, the connector include connection ring and connection sheet, and the connection ring is enclosed within platform, the connection sheet with
The tie point of scriber bar is in same level.
As a kind of preferred, connected using pin between the scriber bar and the connection sheet of connector.
The beneficial effects of the invention are as follows:Traditional center of circle, radius are drawn into circule method, three strokes and dots circule methods carry out rational synthesis,
Can be realized on a compasses it is various in the case of can facilitate picture to justify, simple structure is easy to operate.Centering bar is led to platform
The regulation that internal and external screw thread realizes upper-lower position is crossed, at least three scribers are provided with, the tie point of scriber and connection sheet is in same water
In plane, that is, the length for ensureing three expansible bar parts of scriber is identical, i.e., three scribers are relative to centering bar axle
When line opens equal angular, the radius of drawn circular arc is identical.It is vertical to ensure that disk more effectively ensure centering bar with the center of circle
Perpendicularity.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of the present invention.
The present invention will be further described below in conjunction with the accompanying drawings.
Specific embodiment
As shown in Figure 1, a kind of three scribers compasses, including centering bar 1 and three scribers, the top of the centering bar 1 is provided with
One section of tapped platform 2, the centering bar 1 is provided with the external screw thread 5 matched with the internal thread of platform 2, the bottom of the centering bar 1
Portion is provided with vertical guarantee disk 6 and centering is top；The scriber includes scriber bar 4 and connector 3, and the connector 3 includes connection
Ring and connection sheet, the connection ring are enclosed within platform 2, are connected using pin between the scriber bar 4 and the connection sheet of connector 3
Connect, the tie point of the connection sheet and scriber bar is in same level.
When actually used, for the known center of circle, radius draw circle, will centering it is top be scheduled on the center of circle, scriber is opened, make draw
Pin is equal to radius with top distance, now draws circle method similar with traditional compasses.
For known three strokes and dots circles, three scribers are mutually withstood with these three points respectively, rotate centering bar, make vertical guarantee
Disk is completely attached to plane, and centering is top now to have pushed up in the plane, and the center of circle is to fix；Three the one of scriber is rotated respectively to draw
The circular arc of circle is drawn in pin, the track that its scriber needle point is rotated needed for being exactly, mended these arc sections, and a circle is just finished, this
Round radius is exactly the distance between top and scriber at this moment.
Claims (2)
1. a kind of three scribers compasses, including centering bar (1) and scriber, it is characterised in that：Centering bar (1) top is provided with one section
Tapped platform (2), the centering bar (1) is provided with the external screw thread (5) matched with platform internal thread, the centering bar
(1) bottom is provided with vertical guarantee disk (6) and feels relieved top；The scriber quantity is at least three, and the scriber includes scriber bar
(4) and connector (3), the connector (3) includes connection ring and connection sheet, and the connection ring is enclosed within platform (2), the company
The tie point of contact pin and scriber bar is in same level.
2. a kind of three scribers compasses as claimed in claim 1, it is characterised in that：The scriber bar (4) and the company of connector (3)
Connected using pin between contact pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710222748.XA CN106827889A (en) | 2017-04-07 | 2017-04-07 | A kind of three scriber compasses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710222748.XA CN106827889A (en) | 2017-04-07 | 2017-04-07 | A kind of three scriber compasses |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106827889A true CN106827889A (en) | 2017-06-13 |
Family
ID=59147539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710222748.XA Pending CN106827889A (en) | 2017-04-07 | 2017-04-07 | A kind of three scriber compasses |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106827889A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3507053A1 (en) * | 1985-02-28 | 1986-08-28 | Christoph 8390 Passau Ebbert | Line-drawing and cutting appliance |
| CN86201861U (en) * | 1986-03-30 | 1987-02-11 | 谭养 | Compass enable to divide circle into equant parts |
| CN87206506U (en) * | 1987-04-21 | 1988-02-17 | 徐红 | Solid angle gauge |
| CN2145708Y (en) * | 1992-05-01 | 1993-11-10 | 严家伟 | Multipurpose compasses |
| CN2187118Y (en) * | 1993-04-06 | 1995-01-11 | 明灿 | Three-leg centring compass |
-
2017
- 2017-04-07 CN CN201710222748.XA patent/CN106827889A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3507053A1 (en) * | 1985-02-28 | 1986-08-28 | Christoph 8390 Passau Ebbert | Line-drawing and cutting appliance |
| CN86201861U (en) * | 1986-03-30 | 1987-02-11 | 谭养 | Compass enable to divide circle into equant parts |
| CN87206506U (en) * | 1987-04-21 | 1988-02-17 | 徐红 | Solid angle gauge |
| CN2145708Y (en) * | 1992-05-01 | 1993-11-10 | 严家伟 | Multipurpose compasses |
| CN2187118Y (en) * | 1993-04-06 | 1995-01-11 | 明灿 | Three-leg centring compass |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170613 |