CN105252937B - A kind of improved precision locating tab assembly compasses - Google Patents
A kind of improved precision locating tab assembly compasses Download PDFInfo
- Publication number
- CN105252937B CN105252937B CN201510844360.4A CN201510844360A CN105252937B CN 105252937 B CN105252937 B CN 105252937B CN 201510844360 A CN201510844360 A CN 201510844360A CN 105252937 B CN105252937 B CN 105252937B
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- Prior art keywords
- compasses
- main scale
- tab assembly
- improved precision
- propelling pencil
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- Length-Measuring Instruments Using Mechanical Means (AREA)
- Drawing Aids And Blackboards (AREA)
Abstract
The invention discloses a kind of improved precision locating tab assembly compasses, including the fixing bar being connected with main scale with graduated main scale and propelling pencil, described fixing bar and propelling pencil homonymy arrange and all vertical with main scale are connected, and described compasses also include for regulating the controlling organization that propelling pencil moves back and forth at main scale length direction.The compasses of the present invention realize can drawing accurately for the circle of concrete scale size, for the most existing common compasses, decrease error；And by the fixing bar of compasses and location bar with the use of, it is possible to easily read the required scale measuring object, can use as a kind of survey tool.
Description
Technical field
The invention belongs to learning tool technical field, be specifically related to a kind of improved precision locating tab assembly compasses.
Background technology
Common compasses and be to break into two with one's hands with two handss to operate, the error that do so causes is the biggest.When
Before domestic also have similar works, it is mainly applied to the compass teaching aid at blackboard upper drawing circle, and does not has
Scale more accurately.
Summary of the invention
It is contemplated that at least solve one of technical problem present in prior art.To this end, the present invention provides one
Plant improved precision locating tab assembly compasses, it is therefore an objective to being capable of compasses has the picture of accurate calibration.
To achieve these goals, the technical scheme that the present invention takes is:
A kind of improved precision locating tab assembly compasses, including the fixing bar being connected with main scale with graduated main scale and
Propelling pencil, described fixing bar and propelling pencil homonymy arrange and all vertical with main scale be connected, and described compasses also wrap
Include for regulating the controlling organization that propelling pencil moves back and forth at main scale length direction.
Preferably, described controlling organization include fine rule, can along main scale slide location bar and respectively with main scale two ends
Two gears connected by rotating shaft, rotating shaft is connected by fine rule with location bar, and described propelling pencil is by location
Bar is connected with main scale, and described pinion rotation drives location bar to move back and forth by fine rule.
Preferably, the cavity of receiving fine rule it is provided with inside described main scale.
Preferably, the free end of described fixing bar is provided with draw point, the axis direction of draw point and the zero graduation line of main scale
It is on same straight line.
Preferably, the free end of described fixing bar is additionally provided with the bullet contracting unit that regulation draw point is flexible.
Preferably, described bullet contracting unit include the first spring, be nested in the first spring rush axle, control rush axle
The second button that first button of punching press draw point, the second spring being used for nested draw point and control draw point are retracted.
Preferably, described compasses also include and fix the fixed block that bar concentric shafts is arranged, and fixed block divides with fixing bar
It is not positioned at the both sides of main scale.
Preferably, described compasses also include locating ring, and described propelling pencil is connected with main scale by locating ring.
Preferably, described compasses also include concave groove type slide block, and described propelling pencil passes through concave groove type slide block and main scale
Connecting, the central axis direction that the length direction of described location bar and concave groove type slide block cave inward partly is in same
On straight line.
Beneficial effects of the present invention: the compasses of the present invention realize can drawing accurately for the circle of concrete scale size
Out, for the most existing common compasses, error is decreased；And by the fixing bar of compasses and location bar
With the use of, it is possible to easily read the required scale measuring object, can use as a kind of survey tool.
Accompanying drawing explanation
This specification includes the following drawings, shown content respectively:
Fig. 1 is the structural representation of improved precision locating tab assembly compasses of the present invention.
Figure is labeled as:
1, main scale, 2, fixing bar, 3, propelling pencil, 4, location bar, 5, gear, 6, fine rule, 7,
Draw point, 8, fixed block, 9, locating ring, 10, concave groove type slide block.
Detailed description of the invention
Below against accompanying drawing, by the description to embodiment, the detailed description of the invention of the present invention is made the most in detail
Thin explanation, it is therefore an objective to help those skilled in the art that design, the technical scheme of the present invention are had more completely,
Accurate and deep understanding, and contribute to its enforcement.
As it is shown in figure 1, the present invention relates to a kind of improved precision locating tab assembly compasses, including carry graduated main scale 1,
The fixing bar 2 being connected with main scale and propelling pencil 3, fixing bar 2 arrange with propelling pencil 3 homonymy and all with
Main scale 1 vertically connects, and compasses also include for regulating what propelling pencil 3 moved back and forth at main scale 1 length direction
Controlling organization.
Above-mentioned controlling organization include fine rule 6, can along main scale slide location bar 4 and respectively with main scale 1 two ends
Two gears 5 connected by rotating shaft, rotating shaft is connected by fine rule with location bar, and propelling pencil 3 is by location
Bar 4 is connected with main scale, and gear 5 rotates through fine rule 6 and drives location bar 4 to move back and forth.In two rotating shafts
It is respectively provided with well one for the small cylinder furling fine rule, it is to avoid fine rule is directly wound in rotating shaft too much
Gear is caused to be difficult to rotate.
Cause fine rule to hook into other article in order to avoid fine rule is located at outside, be preferably provided with receiving inside main scale thin
The cavity of line, fine rule can move back and forth in the receiving cavity within main scale.
In order to strengthen the fixation of fixing bar further, the free end of fixing bar is provided with draw point 7, draw point 7
Axis direction is on same straight line with the zero graduation line of main scale.
In order to avoid the present invention compasses when not in use, draw point exposes easily stabs the situation of people and occurs, fixing
The free end of bar is additionally provided with the bullet contracting unit that regulation draw point is flexible.Preferably, bullet contracting unit include the first spring,
Be nested in the first spring rushes axle, controls to rush the first button of axle punching press draw point, for the second of nested draw point
The second button that spring and control draw point are retracted.
In order to preferably preferably round dot is fixed the time marquis drawing circle, being difficult to variation, compasses the most also wrap
Including and fix the fixed block 8 that bar 2 concentric shafts is arranged, fixed block 8 and fixing bar 2 lay respectively at the two of main scale 1
Side.
For the fixed performance further strengthened at compasses propelling pencil and the scope that preferably calibrates,
Compasses also include locating ring 9, and propelling pencil is connected with main scale 1 by locating ring 9.
In order to further strengthen the fixed performance of propelling pencil and main scale, compasses also include concave groove type slide block
10, propelling pencil 3 is connected with main scale 1 by concave groove type slide block 10, the length direction of location bar 4 and groove
Type slide block 10 cave inward part central axis direction be on same straight line.
Above in association with accompanying drawing, the present invention is exemplarily described.Obviously, the present invention implements not by upper
State the restriction of mode.As long as the various unsubstantialities that the method design that have employed the present invention is carried out with technical scheme
Improvement；Or the most improved, above-mentioned design and the technical scheme of the present invention are directly applied to other occasion,
All within protection scope of the present invention.
Claims (8)
1. improved precision locating tab assembly compasses, including carrying graduated main scale (1), the fixing bar (2) being connected with main scale (1) and propelling pencil (3), it is characterized in that: described fixing bar (2) and propelling pencil (3) homonymy arrange and all vertical with main scale (1) be connected, described compasses also include for regulating the controlling organization that propelling pencil moves back and forth at main scale (1) length direction, described controlling organization includes fine rule (6), the location bar (4) that can slide along main scale and two gears (5) being connected by rotating shaft with main scale two ends respectively, rotating shaft is connected by fine rule (6) with location bar (4), described propelling pencil (3) is connected with main scale (1) by location bar (4), described gear (5) rotates and drives location bar to move back and forth by fine rule.
Improved precision locating tab assembly compasses the most according to claim 1, it is characterised in that: it is provided with the cavity accommodating fine rule inside described main scale.
Improved precision locating tab assembly compasses the most according to claim 1, it is characterized in that: the free end of described fixing bar (2) is provided with draw point (7), the axis direction of draw point (7) is on same straight line with the zero graduation line of main scale (1).
Improved precision locating tab assembly compasses the most according to claim 3, it is characterised in that: the free end of described fixing bar (2) is additionally provided with the bullet contracting unit that regulation draw point is flexible.
Improved precision locating tab assembly compasses the most according to claim 4, it is characterised in that: described bullet contracting unit include the first spring, be nested in the first spring rush axle, control to rush the first button of axle punching press draw point, for the second spring of nested draw point and control the second button that draw point is retracted.
Improved precision locating tab assembly compasses the most according to claim 1, it is characterized in that: described compasses also include and fix the fixed block (8) that bar concentric shafts is arranged, and fixed block (8) and fixing bar (2) lay respectively at the both sides of main scale.
Improved precision locating tab assembly compasses the most according to claim 1, it is characterised in that: described compasses also include locating ring (9), and described propelling pencil is connected with main scale (1) by locating ring (9).
Improved precision locating tab assembly compasses the most according to claim 1, it is characterized in that: described compasses also include concave groove type slide block (10), described propelling pencil is connected with main scale by concave groove type slide block (10), and the length direction of described location bar (4) and the concave groove type slide block central axis direction partly that caves inward is on same straight line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510844360.4A CN105252937B (en) | 2015-11-25 | 2015-11-25 | A kind of improved precision locating tab assembly compasses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510844360.4A CN105252937B (en) | 2015-11-25 | 2015-11-25 | A kind of improved precision locating tab assembly compasses |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105252937A CN105252937A (en) | 2016-01-20 |
| CN105252937B true CN105252937B (en) | 2017-01-04 |
Family
ID=55093003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510844360.4A Active CN105252937B (en) | 2015-11-25 | 2015-11-25 | A kind of improved precision locating tab assembly compasses |
Country Status (1)
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| CN (1) | CN105252937B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107310307A (en) * | 2017-07-20 | 2017-11-03 | 合肥顺顺信息咨询有限公司 | A kind of compasses for precisely drawing |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7080459B1 (en) * | 2005-03-14 | 2006-07-25 | Khan Ashfaq A | Thread ruler and a multi-function drafting instrument |
| CN202006676U (en) * | 2010-08-04 | 2011-10-12 | 陈沈洋 | Vernier sucker teaching compasses |
| CN202862934U (en) * | 2012-08-28 | 2013-04-10 | 陈掬琦 | Novel compasses |
| CN202911389U (en) * | 2012-10-17 | 2013-05-01 | 徐国仁 | Compasses |
| CN203818850U (en) * | 2014-05-08 | 2014-09-10 | 桑志英 | Compasses with exact scales for teaching |
| CN104309370B (en) * | 2014-11-05 | 2016-09-28 | 黄赞谟 | Dead axle compasses |
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2015
- 2015-11-25 CN CN201510844360.4A patent/CN105252937B/en active Active
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| Publication number | Publication date |
|---|---|
| CN105252937A (en) | 2016-01-20 |
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