CN103522804A - Protractor - Google Patents
Protractor Download PDFInfo
- Publication number
- CN103522804A CN103522804A CN201310500613.7A CN201310500613A CN103522804A CN 103522804 A CN103522804 A CN 103522804A CN 201310500613 A CN201310500613 A CN 201310500613A CN 103522804 A CN103522804 A CN 103522804A
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- China
- Prior art keywords
- slide block
- protractor
- dwang
- fixed station
- projection
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Abstract
The invention discloses a protractor which comprises a protractor body (1), wherein the middle of the protractor body (1) is hollowed out. The protractor further comprises a dwang (2), a sliding rail (4), a sliding block (5), a connecting sheet (6) and a fixed platform (7), wherein the circle center of the protractor body (1) enables one end of the dwang (2) to be fixed through a fixing part (3); scales are marked on the two sides of the dwang (2), a hollowed-out portion is arranged in the middle of the dwang (2), and the sliding rail (4) is fixed to the inner side of the hollowed-out portion; the sliding block (5) is located in the middle of the sliding rail (4), a through hole is formed in the center of the sliding block (5), and one side of the sliding block (5) is connected with one end of the connecting sheet (6) through a hinge; the other end of the connecting sheet (6) is connected with the fixed platform (7) through a hinge, and a through hole is formed in the center of the fixed platform. The protractor integrates the functions of a compass, a dividing ruler and the protractor, enhances flexibility, saves drawing time, improves use efficiency and is convenient to operate.
Description
Technical field
The present invention relates to a kind of protractor, belong to the technical field of survey tool.
Background technology
In survey tool, take measurement of an angle and must use protractor.Protractor can arbitrarily be drawn angle, measuring angle, drawing vertical line, parallel lines, survey gradient, perpendicularity, levelness etc., therefore finds broad application.Traditional protractor comprises protractor body, and the solid construction that protractor body is semicircle is carved with graduation mark on semicircle, directly that the straight line of tested angle is corresponding with graduation mark while measuring, i.e. readable, and such angle gage structure is simple, easy to use.But there are some problems in it.On the body of such protractor, be often carved with many graduation marks, easily cause vision to obscure and be unfavorable for reading, increase error, and the straight length that cannot measure corresponding angle when taking measurement of an angle measures, therefore increased error, reduced function.In addition, on this basis, directly utilization hornwork is drawn circle or circular arc by corresponding radius, and such protractor need to could be drawn by compasses conventionally after measuring radius, fail well to integrate compasses and protractor, caused flexibility reduction, service efficiency reduces, increase the drafting time, extend drawing process, therefore have limitation.
Summary of the invention
Technical problem to be solved by this invention is to overcome the deficiencies in the prior art, protractor is provided, by engraved structure and dwang, make protractor can when taking measurement of an angle, measure the straight length of corresponding angles, can directly determine again draw circles or circular arc after radius, simple and convenient compasses, rule, the protractor of integrating, reduce error, strengthened flexibility, saved the drafting time, improve the service efficiency of protractor, easy to operate.
The present invention specifically solves the problems of the technologies described above by the following technical solutions:
, comprise protractor body, the mid portion hollow out of described protractor body; Also comprise dwang, slide rail, slide block, brace, fixed station, the circle centre position of wherein said protractor body is fixed one end of dwang by fixture; The both sides of described dwang indicate scale from the center of circle of protractor body; The centre of described dwang is provided with hollow-out parts, and described slide rail is fixed on the inner side of hollow-out parts; Described slide block is sliding between slide rail and on slide rail, and the center of described slide block is provided with through hole, in be connected through the hinge one end of brace of a side of slide block; The other end of the described brace fixed station that is connected through the hinge; The center of described fixed station is provided with through hole; By slide block, brace, fixed station, form penholder, utilize dwang rotation measuring angle and draw circular arc.
As a preferred technical solution of the present invention: be provided with locking device on described slide block.
As a preferred technical solution of the present invention: described locking device comprises opening, slide block, projection, and described opening is positioned on the outer wall of slide block, and opening is square, and one end of open bottom is provided with lug boss; Described projection is L-type and is positioned at slide block, on described slide block, is provided with through hole with one end correspondence position of projection, and the other end of projection is fixed through opening and slide block.
As a preferred technical solution of the present invention: be provided with screw and screw in the side of described fixed station, described screw stretches in the through hole of fixed station through screw.
As a preferred technical solution of the present invention: described dwang comprises the extension rod with scale.
As a preferred technical solution of the present invention: one end of described dwang is provided with sharp portion.
The present invention adopts technique scheme, can produce following technique effect:
Protractor provided by the invention, by engraved structure and dwang, make the protractor can be when taking measurement of an angle, according to the scale on dwang, measure the straight length of corresponding angles, can utilize again slide rail, slide block, brace, fixed station to form the penholder that can fix pen or pen core, utilize the distance that slide block slides directly after definite radius, to rotate dwang draw circles or circular arc, simple and convenient compasses, rule, the protractor of integrating, reduced error, strengthened flexibility, save the drafting time, improve the service efficiency of protractor, easy to operate.Slide block is provided with locking device, can further solve the problem that slide block easily moves when draw circles or circular arc, increases stationarity.For locking device, the concrete structure that adopts opening, slide block, projection, slide block can be moved within the scope of opening, and driving projection to move, projection stretches out with the through hole of projection correspondence position from slide block, offsets with slide rail, realize locking, such locking device structure is simple, convenient operation, and stability is better.In the side of fixed station, be provided with screw and screw, can facilitate the fixing of pen or pen core, by screw, offset after stretching into through hole, can realize adjusting, can pack into so that the penholder forming can be applicable to pen or the pen core of various thicknesses.Dwang comprises the extension rod with scale, utilizes extension rod can measure the angle outside semi arch, enlarge measurement range.One end of dwang is provided with sharp portion, makes the scale on the easier amount of alignment hornwork of sharp portion, is convenient to observe, and reduces error.Therefore, the present invention can be simple and convenient integrates compasses, rule, protractor, has strengthened flexibility, saves the drafting time, improves the service efficiency of protractor, easy to operate, can apply in measuring process widely.
Accompanying drawing explanation
Fig. 1 is the structural representation of protractor of the present invention.
Fig. 2 is the schematic diagram that slide block, brace and the fixed station of protractor of the present invention forms penholder structure.
Fig. 3 is the schematic diagram of slide block unlocked state in the slide block of protractor of the present invention.
Fig. 4 is the schematic diagram of slide block lock-out state in the slide block of protractor of the present invention.
Wherein label is explained: 1-protractor body, 2-dwang, 3-fixture, 4-slide rail, 5-slide block, 6-brace, 7-fixed station, 8-slide block, 9-projection, 10-opening, 11-screw, 12-extension rod, 13-hinge.
The specific embodiment
Below in conjunction with Figure of description, embodiments of the present invention are described.
As shown in Figure 1, the invention provides a kind of protractor, comprise protractor body 1, the mid portion hollow out of described protractor body 1; Also comprise dwang 2, slide rail 4, slide block 5, brace 6, fixed station 7, the circle centre position of wherein said protractor body 1 is fixed one end of dwang 2 by fixture 3; The both sides of described dwang 2 indicate scale from the center of circle of protractor body 1; The centre of described dwang 2 is provided with hollow-out parts, and described slide rail 4 is fixed on the inner side of hollow-out parts; Described slide block 5 is sliding between slide rail 4 and on slide rail 5, and the center of described slide block 5 is provided with through hole, in be connected through the hinge one end of brace 6 of a side of slide block 5; The other end of described brace 6 fixed station 7 that is connected through the hinge; The center of described fixed station 7 is provided with through hole; By slide block 5, brace 6, fixed station 7, form penholder, utilize dwang 2 rotation measuring angles and draw circular arc.
In addition, on slide block 5, be provided with locking device.For locking device, can adopt multiple locking fixed structure of the prior art.In the present embodiment, locking device comprises opening 10, slide block 8, projection 9, and opening 10 is positioned on the outer wall of slide block 5, and opening 10 is square, and one end of opening 10 bottoms is provided with lug boss; Described projection 9 is for L-type and be positioned at slide block 5, on described slide block 5, is provided with through hole with one end correspondence position of projection 9, and the other end of projection 9 is fixing with slide block 8 through opening 10.
In order further to strengthen stationarity, in the side of fixed station 7, be provided with screw and screw 11, screw 11 stretches in the through hole of fixed station 7 through screw.
The present invention is when implementing, as depicted in figs. 1 and 2, first, the center of protractor body 1 is overlapped with tested angle mid point, the straight-bar of protractor body 1 is overlapped with angle place straight line on one side, other one side for angle can be by rotating bar 2, because the circle centre position of protractor body 1 is fixed one end of dwang 2 by fixture 3, fixture 3 can be screw or rivet, dwang 2 can be fixed on protractor body 1, can on protractor body 1, realize the rotation within the scope of 360 degree again.Utilize the center line place straight line of dwang 2 to overlap with other one side of angle, then according to the scale on protractor body 1, can obtain the number of degrees of angle.In addition, one side when the center line of dwang 2 and other coincidence of angle, can measure according to the scale on dwang 2 length of this line segment.When needing picture to determine circle in radius or circular arc, the slide block 5 that is positioned at slide rail 4 is moved to corresponding graduation mark place, be the radius of circle to be painted or circular arc.Determine after radius, fixed station 7 is lifted, by brace 6, be connected on slide block 5.One side of slide block 5 connects one end of brace 6 by hinge 13; The other end of brace 6 is connected and fixed platform 7 by hinge 13, when fixed station 7, brace 6 are erected, it is tight that hinge 13 is oppositely arranged, and makes 6 one-tenth 90 states of spending and keeping this angle of fixed station 7 and brace, keeps 5 one-tenth 90 states of spending and keeping this angle of brace 6 and slide block simultaneously.Make can erect and form stable penholder structure by brace 6 when using fixed station 7, the through hole that pen or pen core are penetrated to fixed station 7 is until the through hole on slide block 5 below, when the thickness of pen or pen core just meets upper lower through-hole, need to be unfixing by other devices, fixed station 7 and brace 6 put down, with dwang 2 laminatings.And when pen or the thickness of pen core do not meet through hole, by screw and the screw 11 of the side of fixed station 7.Utilize screw 11 to stretch in the through hole of fixed station 7 through screw, make can offset with pen or pen core with screw 11, further improve the steadiness that pen or pen core are installed.After fixing, stir dwang 2, make nib can directly draw out in the plane circular arc, when dwang 2 rotations 180 are spent, can draw out semicircle.One end of dwang 2 is provided with sharp portion, makes the scale on the easier amount of alignment hornwork of sharp portion, is convenient to observe, and reduces error.
In drawing process, if sliding condition appears in slide block 5, can utilize locking device further fixing.Locking device in the embodiment of the present invention, specifically adopts the structure of opening 10, slide block 8, projection 9.Opening 10 is rectangle, and one end of opening 10 bottoms is provided with lug boss, makes slide block 8 can be absorbed in lug boss and maintain static when mobile; Projection 9 is for L-type and be positioned at slide block 5, on slide block 5, is provided with through hole with one end correspondence position of projection 9, and the other end of projection 9 is fixing with slide block 8 through opening 10.Fig. 3 is the schematic diagram of slide block unlocked state in the slide block of protractor of the present invention, and when not needing to lock, slide block 8 is positioned in the smooth part of opening 10, and projection 9 stretches in slide block 5 inside, does not stretch out, and does not offset with slide rail 4.In the time of need to locking, slide block 8 moves to the lug boss of opening 10 and fixes the schematic diagram of slide block lock-out state in the slide block that Fig. 4 is protractor of the present invention, drive projection 9 to move, projection 9 stretches out with the through hole of projection 9 correspondence positions from slide block 5, offsets with slide rail 4, realizes locking.Slide block 8 can be moved in opening 10 scopes,, such locking device structure is simple, convenient operation, stability is better.
Other one end of the relative circle centre position of dwang 2 also comprises the extension rod 12 with scale, in angle, surpass 180 while spending, can be directly center line by extension rod 12 overlap with tested angle straight line, set acquisition is greater than 180 angles when spending, improve measurement category, can also suitably measure length.
Therefore, the present invention can be simple and convenient integrates compasses, rule, protractor, has strengthened flexibility, saves the drafting time, improves the service efficiency of protractor, easy to operate, can apply in measuring process widely.
By reference to the accompanying drawings embodiments of the present invention are explained in detail above, but the present invention is not limited to above-mentioned embodiment, in the ken possessing those of ordinary skills, can also under the prerequisite that does not depart from aim of the present invention, makes a variety of changes.
Claims (6)
1. a protractor, comprises protractor body (1), it is characterized in that: the mid portion hollow out of described protractor body (1); Also comprise dwang (2), slide rail (4), slide block (5), brace (6), fixed station (7), the circle centre position of wherein said protractor body (1) is fixed one end of dwang (2) by fixture (3); The both sides of described dwang (2) indicate scale from the center of circle of protractor body (1); The centre of described dwang (2) is provided with hollow-out parts, and described slide rail (4) is fixed on the inner side of hollow-out parts; Described slide block (5) is positioned between slide rail (4) and slides slide rail (5) is upper, and the center of described slide block (5) is provided with through hole, in be connected through the hinge one end of brace (6) of a side of slide block (5); The other end of described brace (6) fixed station (7) that is connected through the hinge; The center of described fixed station (7) is provided with through hole; By slide block (5), brace (6), fixed station (7), form penholder, utilize dwang (2) rotation measuring angle and draw circular arc.
2. protractor according to claim 1, is characterized in that: on described slide block (5), be provided with locking device.
3. protractor according to claim 2, it is characterized in that: described locking device comprises opening (10), slide block (8), projection (9), described opening (10) is positioned on the outer wall of slide block (5), and opening (10) is square, and one end of opening (10) bottom is provided with lug boss; Described projection (9) is for L-type and be positioned at slide block (5), and described slide block (5) one end correspondence position upper and projection (9) is provided with through hole, and the other end of projection (9) is fixing through opening (10) and slide block (8).
4. protractor according to claim 1, is characterized in that: in the side of described fixed station (7), be provided with screw and screw (11), described screw (11) stretches in the through hole of fixed station (7) through screw.
5. protractor according to claim 1, is characterized in that: described dwang (2) comprises the extension rod (12) with scale.
6. protractor according to claim 1, is characterized in that: one end of described dwang (2) is provided with sharp portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310500613.7A CN103522804A (en) | 2013-10-22 | 2013-10-22 | Protractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310500613.7A CN103522804A (en) | 2013-10-22 | 2013-10-22 | Protractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103522804A true CN103522804A (en) | 2014-01-22 |
Family
ID=49925309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310500613.7A Withdrawn CN103522804A (en) | 2013-10-22 | 2013-10-22 | Protractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103522804A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106379084A (en) * | 2016-09-14 | 2017-02-08 | 中国地质大学（武汉） | Multifunctional integrated ruler |
| CN110271329A (en) * | 2019-07-08 | 2019-09-24 | 上海理工大学 | Disc compasses |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2181411Y (en) * | 1994-01-08 | 1994-11-02 | 刘永信 | Multifunctional drawing instrument |
| JPH09119803A (en) * | 1995-10-24 | 1997-05-06 | Seiichi Ohata | Angle divider |
| CN201016680Y (en) * | 2007-03-15 | 2008-02-06 | 张奇 | Multifunctional angle gage |
| CN201047744Y (en) * | 2007-06-19 | 2008-04-16 | 黄文裕 | Multipurpose angle dividing machine |
| CN201665093U (en) * | 2010-03-03 | 2010-12-08 | 邹炎 | Protractor |
| CN201677644U (en) * | 2010-04-30 | 2010-12-22 | 杜倩 | Protractor |
| CN203528149U (en) * | 2013-10-22 | 2014-04-09 | 无锡俊达测试技术服务有限公司 | Protractor |
-
2013
- 2013-10-22 CN CN201310500613.7A patent/CN103522804A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2181411Y (en) * | 1994-01-08 | 1994-11-02 | 刘永信 | Multifunctional drawing instrument |
| JPH09119803A (en) * | 1995-10-24 | 1997-05-06 | Seiichi Ohata | Angle divider |
| CN201016680Y (en) * | 2007-03-15 | 2008-02-06 | 张奇 | Multifunctional angle gage |
| CN201047744Y (en) * | 2007-06-19 | 2008-04-16 | 黄文裕 | Multipurpose angle dividing machine |
| CN201665093U (en) * | 2010-03-03 | 2010-12-08 | 邹炎 | Protractor |
| CN201677644U (en) * | 2010-04-30 | 2010-12-22 | 杜倩 | Protractor |
| CN203528149U (en) * | 2013-10-22 | 2014-04-09 | 无锡俊达测试技术服务有限公司 | Protractor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106379084A (en) * | 2016-09-14 | 2017-02-08 | 中国地质大学（武汉） | Multifunctional integrated ruler |
| CN110271329A (en) * | 2019-07-08 | 2019-09-24 | 上海理工大学 | Disc compasses |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C04 | Withdrawal of patent application after publication (patent law 2001) | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20140122 |