CN110341353A - A kind of Geography drawing rule - Google Patents
A kind of Geography drawing rule Download PDFInfo
- Publication number
- CN110341353A CN110341353A CN201910692789.4A CN201910692789A CN110341353A CN 110341353 A CN110341353 A CN 110341353A CN 201910692789 A CN201910692789 A CN 201910692789A CN 110341353 A CN110341353 A CN 110341353A
- Authority
- CN
- China
- Prior art keywords
- flat tube
- straight line
- line segment
- draws
- geography
- 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.)
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Classifications
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- 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
- B43L7/00—Straightedges
- B43L7/10—Plural straightedges relatively movable
-
- 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
Abstract
The invention discloses a kind of Geography drawing rules, including straight line drawing apparatus, the left end of the straight line drawing apparatus is equipped with angle positioning device, the outside of angle positioning device is equipped with angle fixing device, the right end of angle fixing device is equipped with line segment drawing apparatus, the outside of straight line drawing apparatus and line segment drawing apparatus is equipped with the first graduation mark, and the inside of straight line drawing apparatus and line segment drawing apparatus is equipped with length extension apparatus；Pass through the cooperation of angle positioning device and angle fixing device, the Geography drawing rule is set to have the function of set square and protractor, pass through the cooperation of clamping device and taper needle, so that the Geography drawing rule is had the function of compasses, so that the Geography is rolled into one the function of ruler, set square, protractor, compasses with drawing rule, teacher is facilitated to carry and use, speed of mapping is fast, it is time saving and laborsaving, time in classroom is further saved, classroom efficiency is improved.
Description
Technical field
The present invention relates to Geography drawing rule fields, more specifically to a kind of Geography drawing rule.
Background technique
Geography is a comprehensive basic subject, mainly various naturally existing in the geographical environment of research earth surface
As the subject of correlation with humane phenomenon and between them, in general, range involved in geography includes human lives
Various environment, that is, natural environment and humanistic environment, natural environment include atmospheric thermodynamics, hydrosphere, lithosphere, biosphere, soil
Thus the ring layers such as earth circle just produce geographical each branch, such as in climatic phenomenon, hydrology phenomenon and water environment, the earth
Natural resources, landforms, biology distribution and ecological phenomenon, many phenomenons of the distribution of soil and type etc., in addition to this
Other than a little, physical geography phenomenon be also directed to due to pattern, the hydrology, plant, soil interaction surface system phenomenon and
The various environmental phenomenons that are generated due to mankind's activity, climatic phenomenon, needed in geography teaching process using drawing rule into
Row is drawn, so that geographical knowledge is more intuitive, clear, clear imparts to student.
Existing Geography drawing rule includes ruler, set square, protractor, compasses, and tool is more at random, is needed when mapping
The type of drawing rule is frequently replaced, mapping speed is slow, and it is time-consuming and laborious, time in classroom is wasted, classroom efficiency is reduced, and
When drawing longer line segment, needs that drawing rule is first carried out movement to draw again, is easy that drawn line segment is made to generate offset,
Delay instructional blocks of time, influence quality of instruction, therefore needs to design a kind of Geography drawing rule.
Summary of the invention
1. technical problems to be solved
It include ruler, set square, protractor, compasses, tool for existing Geography drawing rule existing in the prior art
More at random, when mapping, needs to frequently replace the type of drawing rule, and mapping speed is slow, time-consuming and laborious, wastes time in classroom, drop
Low classroom efficiency, and when drawing longer line segment, it needs that drawing rule is first carried out movement to draw again, is easy to make institute
The line segment drawn generates offset, and the problem of delaying instructional blocks of time, influence quality of instruction, the purpose of the present invention is to provide a kind of geography
Subject drawing rule, it can be very good to solve the problems, such as to propose in background technique.
2. technical solution
To solve the above problems, the present invention adopts the following technical scheme that.
The left end of a kind of Geography drawing rule, including straight line drawing apparatus, the straight line drawing apparatus is equipped with angle
Positioning device, the outside of angle positioning device are equipped with angle fixing device, and the right end of angle fixing device is equipped with line segment and draws dress
It sets, the outside of straight line drawing apparatus and line segment drawing apparatus is equipped with the first graduation mark, and straight line drawing apparatus and line segment draw dress
The inside set is equipped with length extension apparatus, and the right end of a length extension apparatus is equipped with clamping device, another length extends
The right end of device is equipped with taper needle.
Preferably, the straight line drawing apparatus includes that straight line draws flat tube, and the first graduation mark is located at straight line and draws flat tube
On front, the surface that straight line draws flat tube offers orbit hole, and the inner wall that straight line draws flat tube is connected with bar shaped track, and straight line is drawn
The bottom surface of flat tube inner cavity processed is equipped with clamping ratchet, and straight line is drawn and is fixedly installed with spirit bubble before flat tube.
Preferably, the angle positioning device includes fixed block, and the left end that the right end and straight line of fixed block draw flat tube connects
It connecing, the inside fixation of fixed block is interspersed with locating ring, and the external fixing sleeve of locating ring is connected to the limit plate inside fixed block,
Limit plate is fixedly connected with fixed block, and angle line is equipped with before locating ring, offers clamping groove on the inner surface of locating ring.
Preferably, the angle fixing device includes fixed case, and fixed case is actively socketed on the outside of locating ring, fixed case
Inner wall be fixedly connected with guide rail, the inside of fixed case is equipped with slide plate, and the inner wall of slide plate and fixed case is slidably connected, and opens on slide plate
Equipped with sliding slot, sliding slot and guide rail sliding are clamped, and the side of slide plate close to locating ring is connected with fixed tooth, fixed tooth energy and clamping groove
Engagement, the another side of slide plate are connected with pulling rope, and the other end of pulling rope extends to the outside of fixed case and is connected with drawing
Ring, the inner wall of fixed case are connected with reseting shrapnel, and the other end of reseting shrapnel and the side of slide plate connect.
Preferably, the line segment drawing apparatus includes that line segment draws flat tube, and the first graduation mark is located at line segment and draws flat tube
On front, line segment draws the left end of flat tube and the right side of fixed case connects, and the bottom surface that line segment draws flat tube offers pilot hole,
The inner wall that line segment draws flat tube is connected with track strip, and the top surface that line segment draws flat tube inner cavity is equipped with lock ratchet.
Preferably, the length extension apparatus includes extending flat tube, and the quantity for extending flat tube is two, an extension flat tube
The inside of flat tube is drawn positioned at straight line, this extends the inner wall that flat tube draws flat tube with straight line and is slidably connected, and this extension is flat
The right end of pipe is connect with taper needle；Another extends flat tube and is located at the inside that line segment draws flat tube, this extends flat tube and line segment
The inner wall for drawing flat tube is slidably connected, and this right end for extending flat tube is connect with clamping device；The surface of two extension flat tubes
Offer guide groove, bar shaped track and track strip are slided with guide groove and be clamped, and the is equipped with before two extension flat tubes
Two graduation marks, the left end of two extension flat tubes are respectively connected with elastic thread, and the end of an elastic thread and straight line draw flat tube inner cavity
Left side connection, the end of another elastic thread connect with the left side of line segment drafting flat tube inner cavity, extends the inside of flat tube
Equipped with the fixed device of length.
Preferably, the fixed device of the length includes locating sleeve and directive wheel, and directive wheel is located at the right end for extending flat tube,
Directive wheel with extend flat tube inner wall be fixedly connected, locating sleeve be located at extend flat tube left end, the bottom end of locating sleeve with prolong
The bottom surface connection of flat tube inner cavity is stretched, the top movable sleeve of locating sleeve is connected to elevating lever, and it is flat that the top of elevating lever extends to extension
The outside of pipe is simultaneously connected with movable plate, and the top surface of movable plate is connected with fixed ratchet, and fixed ratchet can be with clamping ratchet and locking
Ratchet engagement, the external fixing sleeve of elevating lever are connected to the lifter plate for being located at and extending inside flat tube, and the top surface of lifter plate is connected with bullet
Power rope, the other end of stretch cord are connect with the top surface for extending flat tube inner cavity, and stretch cord is in tensional state, and the bottom surface of lifter plate connects
There is patchcord, the other end of patchcord is connect with the bottom surface for extending flat tube inner cavity, and drag wire is connected in the middle part of patchcord, is pulled
The other end of line is around directive wheel and extends to the outside of extension flat tube and is connected with lifting ring.
Preferably, the clamping device includes shell, is connect before shell with the end for extending flat tube, before shell
Loose slot and inserting hole are offered, the right side of shell inner cavity is connected with the first fixture block, and the left side of the first fixture block offers
One clip slot, the left side of the first fixture block are connected with slide bar, and the other end of slide bar and the left side of shell inner cavity connect, outside slide bar
Portion's movable sleeve is connected to the second fixture block, and the inner wall of the second fixture block and shell is slidably connected, and the right side of the second fixture block offers second
It is respectively connected with anti-slop serrations on the inner surface of clip slot, the first clip slot and the second clip slot, is equipped with and draws between the first clip slot and the second clip slot
The end of figure pen, drawing pen and anti-slop serrations connects, drawing pen and inserting hole pivot bush unit, is connected with before the second fixture block
The front end of push rod, push rod passes through loose slot and extends to the outside of shell, and the external activity of slide bar is socketed with clamp springs, clamps
One end of spring is connect with the second fixture block, and the other end of clamp springs and the left side of shell inner cavity connect.
3. beneficial effect
Compared with the prior art, the present invention has the advantages that
By straight line drawing apparatus and line segment drawing apparatus, so that the Geography drawing rule is had the function of ruler, pass through length
Extension apparatus is spent, so that the length of straight line drawing apparatus and line segment drawing apparatus is adjusted with the requirement of mapping, is suitable for
Longer line segment is drawn, the applicability of the Geography drawing rule is increased, does not need to move in long straightway drawing process
The Geography drawing rule, make draw long straightway one-pass molding, offset will not be generated, reduce correct line segment when
Between, time in classroom is saved, quality of instruction is improved, by the cooperation of angle positioning device and angle fixing device, makes the ground
Section of science drawing rule has the function of set square and protractor, by the cooperation of clamping device and taper needle, makes the geography
Section's drawing rule has the function of compasses, so that the Geography drawing rule is by ruler, set square, protractor, compasses
Function roll into one, facilitate teacher to carry and use, mapping speed it is fast, it is time saving and laborsaving, further save classroom
Time improves classroom efficiency.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the schematic diagram of internal structure of straight line drawing apparatus in Fig. 1 of the present invention；
Fig. 3 is the schematic diagram of internal structure of angle positioning device in Fig. 1 of the present invention；
Fig. 4 is the schematic diagram of internal structure of angle fixing device in Fig. 1 of the present invention；
Fig. 5 is the left view schematic diagram of internal structure of fixed case in Fig. 4 of the present invention；
Fig. 6 is the schematic diagram of internal structure of Fig. 1 middle conductor drawing apparatus of the present invention；
Fig. 7 is the sectional view in Fig. 6 of the present invention at A-A；
Fig. 8 is the structural schematic diagram of length extension apparatus in Fig. 1 of the present invention；
Fig. 9 is the schematic diagram of internal structure of Fig. 8 of the present invention；
Figure 10 is the left view of clamping device in Fig. 1 of the present invention；
Figure 11 is the schematic diagram of internal structure of Figure 10 of the present invention.
Figure label explanation:
1, straight line drawing apparatus；11, straight line draws flat tube；12, orbit hole；13, bar shaped track；14, it is clamped ratchet；15, horizontal
Bubble；2, angle positioning device；21, fixed block；22, locating ring；23, limit plate；24, angle line；25, clamping groove；3, angle is solid
Determine device；31, fixed case；32, guide rail；33, slide plate；34, sliding slot；35, fixed tooth；36, pulling rope；37, stretch ring；38, multiple
Position elastic slice；4, line segment drawing apparatus；41, line segment draws flat tube；42, pilot hole；43, track strip；44, lock ratchet；5, first
Graduation mark；6, length extension apparatus；61, extend flat tube；62, guide groove；63, the second graduation mark；64, elastic thread；7, length is solid
Determine device；70, ring is lifted；71, locating sleeve；72, elevating lever；73, movable plate；74, fixed ratchet；75, lifter plate；76, bullet
Power rope；77, patchcord；78, drag wire；79, directive wheel；8, clamping device；801, shell；802, loose slot；803, inserting hole；
804, the first fixture block；805, the first clip slot；806, slide bar；807, the second fixture block；808, the second clip slot；809, anti-slop serrations；810,
Drawing pen；811, push rod；812, clamp springs；9, taper needle.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention；Technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description；Obviously；Described embodiments are only a part of the embodiments of the present invention；Instead of all the embodiments.It is based on
Embodiment in the present invention；It is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment；It shall fall within the protection scope of the present invention.
Please refer to Fig. 1-11, a kind of Geography drawing rule, including straight line drawing apparatus 1, a left side for straight line drawing apparatus 1
End is equipped with angle positioning device 2, and the outside of angle positioning device 2 is equipped with angle fixing device 3, the right end of angle fixing device 3
Equipped with line segment drawing apparatus 4, the outside of straight line drawing apparatus 1 and line segment drawing apparatus 4 is equipped with the first graduation mark 5, and straight line is drawn
The inside of device 1 and line segment drawing apparatus 4 processed is equipped with length extension apparatus 6, and the right end of a length extension apparatus 6 is equipped with folder
Device 8 is held, the right end of another length extension apparatus 6 is equipped with taper needle 9.
Straight line drawing apparatus 1 includes that straight line draws flat tube 11, and the first graduation mark 5 is located at straight line and draws before flat tube 11
On, the surface that straight line draws flat tube 11 offers orbit hole 12, and the inner wall that straight line draws flat tube 11 is connected with bar shaped track 13, directly
The bottom surface that line draws 11 inner cavity of flat tube is equipped with clamping ratchet 14, and straight line is drawn and is fixedly installed with spirit bubble 15 before flat tube 11.
Angle positioning device 2 includes fixed block 21, and the right end of fixed block 21 is connect with the left end that straight line draws flat tube 11, Gu
The inside fixation for determining block 21 is interspersed with locating ring 22, and the external fixing sleeve of locating ring 22 is connected to the limit inside fixed block 21
Plate 23, limit plate 23 are fixedly connected with fixed block 21, angle line 24 are equipped with before locating ring 22, on the inner surface of locating ring 22
Offer clamping groove 25.
Angle fixing device 3 includes fixed case 31, and fixed case 31 is actively socketed on the outside of locating ring 22, fixed case 31
Inner wall is fixedly connected with guide rail 32, and the inside of fixed case 31 is equipped with slide plate 33, and slide plate 33 and the inner wall of fixed case 31 are slidably connected,
Sliding slot 34 is offered on slide plate 33, sliding slot 34 and the sliding of guide rail 32 are clamped, and the side of slide plate 33 close to locating ring 22 is connected with solid
Fixed tooth 35, fixed tooth 35 can be engaged with clamping groove 25, and the another side of slide plate 33 is connected with pulling rope 36, pulling rope 36 it is another
End extends to the outside of fixed case 31 and is connected with stretch ring 37, and the inner wall of fixed case 31 is connected with reseting shrapnel 38, resets bullet
The other end of piece 38 and the side of slide plate 33 connect.
Line segment drawing apparatus 4 includes that line segment draws flat tube 41, and the first graduation mark 5 is located at line segment and draws before flat tube 41
On, the left end that line segment draws flat tube 41 is connect with the right side of fixed case 31, and the bottom surface that line segment draws flat tube 41 offers guiding
Hole 42, the inner wall that line segment draws flat tube 41 are connected with track strip 43, and the top surface that line segment draws 41 inner cavity of flat tube is equipped with lock ratchet
44。
Length extension apparatus 6 includes extending flat tube 61, and the quantity for extending flat tube 61 is two, and an extension flat tube 61 is located at
Straight line draws the inside of flat tube 11, this extends the inner wall that flat tube 61 draws flat tube 11 with straight line and is slidably connected, and this extends
The right end of flat tube 61 is connect with taper needle 9；Another extends flat tube 61 and is located at the inside that line segment draws flat tube 41, this extension is flat
The inner wall that pipe 61 draws flat tube 41 with line segment is slidably connected, and this right end for extending flat tube 61 is connect with clamping device 8；Two
The surface for extending flat tube 61 offers guide groove 62, and bar shaped track 13 and track strip 43, which are slided with guide groove 62, to be clamped, and two
It is equipped with the second graduation mark 63 before a extension flat tube 61, the left ends of two extension flat tubes 61 are respectively connected with elastic thread 64, and one
The end of a elastic thread 64 is connect with the left side that straight line draws 11 inner cavity of flat tube, and end and the line segment of another elastic thread 64 are drawn
The left side of 41 inner cavity of flat tube processed connects, and the inside for extending flat tube 61 is equipped with the fixed device 7 of length.
The fixed device 7 of length includes locating sleeve 71 and directive wheel 79, and directive wheel 79 is located at the right end for extending flat tube 61, leads
It is fixedly connected to wheel 79 with the inner wall for extending flat tube 61, locating sleeve 71 is located at the left end for extending flat tube 61, locating sleeve 71
Bottom end is connect with the bottom surface for extending 61 inner cavity of flat tube, and the top movable sleeve of locating sleeve 71 is connected to elevating lever 72, elevating lever 72
Top extends to the outside for extending flat tube 61 and is connected with movable plate 73, and the top surface of movable plate 73 is connected with fixed ratchet 74, Gu
Determining ratchet 74 can engage with clamping ratchet 14 and lock ratchet 44, and the external fixing sleeve of elevating lever 72, which is connected to be located at, extends flat tube 61
Internal lifter plate 75, the top surface of lifter plate 75 are connected with stretch cord 76, the other end of stretch cord 76 and extension 61 inner cavity of flat tube
Top surface connection, stretch cord 76 is in tensional state, and the bottom surface of lifter plate 75 is connected with patchcord 77, the other end of patchcord 77 with
Extend the bottom surface connection of 61 inner cavity of flat tube, the middle part of patchcord 77 is connected with drag wire 78, and the other end of drag wire 78, which bypasses, leads
To wheel 79 and extends to the outside of extension flat tube 61 and be connected with lifting ring 70.
Clamping device 8 includes shell 801, is connect before shell 801 with the end for extending flat tube 61, before shell 801
Face offers loose slot 802 and inserting hole 803, and the right side of 801 inner cavity of shell is connected with the first fixture block 804, the first fixture block 804
Left side offer the first clip slot 805, the left side of the first fixture block 804 is connected with slide bar 806, the other end of slide bar 806 with
The left side of 801 inner cavity of shell connects, and the external activity of slide bar 806 is socketed with the second fixture block 807, the second fixture block 807 and shell
801 inner wall is slidably connected, and the right side of the second fixture block 807 offers the second clip slot 808, the first clip slot 805 and the second clip slot
It is respectively connected with anti-slop serrations 809 on 808 inner surface, drawing pen 810 is equipped between the first clip slot 805 and the second clip slot 808, draws
Pen 810 and the end of anti-slop serrations 809 connect, drawing pen 810 and 803 pivot bush unit of inserting hole, before the second fixture block 807
It is connected with push rod 811, the front end of push rod 811 passes through loose slot 802 and extends to the outside of shell 801, and the external of slide bar 806 lives
Dynamic to be socketed with clamp springs 812, one end of clamp springs 812 is connect with the second fixture block 807, the other end of clamp springs 812 and
The left side of 801 inner cavity of shell connects.
Working principle:
Straight line is drawn into the pressing of flat tube 11 on the surface of drawing board first, flat tube 11 is then drawn to straight line according to spirit bubble 15
Position is adjusted, and so that straight line is drawn flat tube 11 and is in a horizontal state, and then pulls corresponding extension flat tube 61 by taper needle 9,
Make this extend flat tube 61 to be moved from the inside that straight line draws flat tube 11, until this extends the right end and straight line of flat tube 61
Draw the distance between 11 left end of flat tube length and meet mapping and require, unclamp taper needle 9, after lifting plate 75 in 76 bullet of stretch cord
It is moved down under the action of power with elevating lever 72, elevating lever 72 is moved down by movable plate 73 with fixed ratchet 74, is made
Fixed ratchet 74 is engaged with clamping ratchet 14, this extension flat tube 61 is fixed, and then this is extended to the right end of flat tube 61
The distance between 11 left end of flat tube length is drawn with straight line to fix, and pulling rope 36, pulling rope are then pulled by stretch ring 37
36 pull the fixed movement of tooth 35 by slide plate 33, separate fixed tooth 35 with clamping groove 25, release and draw flat tube 41 to line segment
Limitation then rotates line segment and draws flat tube 41, draws flat tube 41 to line segment and straight line is drawn the angle between flat tube 11 and adjusted
Section observes the angle value between straight line drafting flat tube 11 and line segment drafting flat tube 41 by angle line 24 later, until straight line is drawn
The angle value that flat tube 11 and line segment processed draw between flat tube 41 meets drawing and requires, and then unclamps stretch ring 37, then slide plate 33
It is mobile with fixed tooth 35 under the action of 38 elastic force of reseting shrapnel, it engages fixed tooth 35 with clamping groove 25, line segment is drawn
Flat tube 41 is fixed, and pulls corresponding extension flat tube 61 by clamping device 8 later, this is made to extend the right end and line of flat tube 61
Section draws the distance between 41 left end of flat tube length and meets mapping requirement, and the right end of this extension flat tube 61 and line segment are drawn
The distance between 41 left end of flat tube length is fixed, and then starts to draw, when needing picture bowlder in drawing course, by upper
It states mode the angle between line segment drafting flat tube 41 and straight line drafting flat tube 11 is adjusted, until drawing pen 810 and taper
The distance between needle 9 value is equal with drawn round radius, then moves push rod 811 to the left, push rod 811 is with the second fixture block 807
It is moved to the left, increases the distance between the second fixture block 807 and the first fixture block 804, then by the end of drawing pen 810 insertion the
Between two fixture blocks 807 and the first fixture block 804, push rod 811, effect of second fixture block 807 in 812 elastic force of clamp springs are unclamped later
Under move right and clamp clamp springs 812, taper needle 9 is then against the center point, is then rotated by locating ring 22
The drawing rule rotates the drawing rule centered on the end of taper needle 9, carries out the drafting of circle.
More than；It is merely preferred embodiments of the present invention；But scope of protection of the present invention is not limited thereto；It is any
Those familiar with the art is in the technical scope disclosed by the present invention；According to the technique and scheme of the present invention and its improve
Design is subject to equivalent substitution or change；It should be covered by the scope of protection of the present invention.
Claims (8)
1. a kind of Geography drawing rule, including straight line drawing apparatus (1), it is characterised in that: the straight line drawing apparatus (1)
Left end be equipped with angle positioning device (2), the outside of angle positioning device (2) is equipped with angle fixing device (3), the fixed dress of angle
The right end for setting (3) is equipped with line segment drawing apparatus (4), and the outside of straight line drawing apparatus (1) and line segment drawing apparatus (4) is equipped with the
The inside of one graduation mark (5), straight line drawing apparatus (1) and line segment drawing apparatus (4) is equipped with length extension apparatus (6), and one
The right end of length extension apparatus (6) is equipped with clamping device (8), and the right end of another length extension apparatus (6) is equipped with taper needle
(9).
2. a kind of Geography drawing rule according to claim 1, it is characterised in that: the straight line drawing apparatus (1)
Flat tube (11) are drawn including straight line, the first graduation mark (5) is located at straight line and draws on before flat tube (11), and straight line draws flat tube
(11) surface offers orbit hole (12), and the inner wall that straight line draws flat tube (11) is connected with bar shaped track (13), and straight line is drawn
The bottom surface of flat tube (11) inner cavity is equipped with clamping ratchet (14), and straight line is drawn and is fixedly installed with spirit bubble before flat tube (11)
(15).
3. a kind of Geography drawing rule according to claim 1, it is characterised in that: the angle positioning device (2)
Including fixed block (21), the right end of fixed block (21) is connect with the left end that straight line draws flat tube (11), the inside of fixed block (21)
Fixation is interspersed with locating ring (22), and the external fixing sleeve of locating ring (22) is connected to the limit plate internal positioned at fixed block (21)
(23), limit plate (23) is fixedly connected with fixed block (21), is equipped with angle line (24) before locating ring (22), locating ring (22)
Inner surface on offer clamping groove (25).
4. a kind of Geography drawing rule according to claim 1, it is characterised in that: the angle fixing device (3)
Including fixed case (31), fixed case (31) is actively socketed on the outside of locating ring (22), and the inner wall of fixed case (31) is fixedly connected
Have guide rail (32), the inside of fixed case (31) is equipped with slide plate (33), and slide plate (33) and the inner wall of fixed case (31) are slidably connected, sliding
It is offered on plate (33) sliding slot (34), sliding slot (34) and guide rail (32) sliding are clamped, side of the slide plate (33) close to locating ring (22)
Face is connected with fixed tooth (35), and fixed tooth (35) can be engaged with clamping groove (25), and the another side of slide plate (33) is connected with drawing
It restricts (36), the other end of pulling rope (36) extends to the outside of fixed case (31) and is connected with stretch ring (37), fixed case (31)
Inner wall be connected with reseting shrapnel (38), the side of the other end of reseting shrapnel (38) and slide plate (33) connects.
5. a kind of Geography drawing rule according to claim 1, it is characterised in that: the line segment drawing apparatus (4)
Flat tube (41) are drawn including line segment, the first graduation mark (5) is located at line segment and draws on before flat tube (41), and line segment draws flat tube
(41) left end is connect with the right side of fixed case (31), and the bottom surface that line segment draws flat tube (41) offers pilot hole (42), line
The inner wall that section draws flat tube (41) is connected with track strip (43), and the top surface that line segment draws flat tube (41) inner cavity is equipped with lock ratchet
(44).
6. a kind of Geography drawing rule according to claim 1, it is characterised in that: the length extension apparatus (6)
Including extending flat tube (61), the quantity for extending flat tube (61) is two, and an extension flat tube (61) is located at straight line and draws flat tube
(11) inside, this extends the inner wall that flat tube (61) draw flat tube (11) with straight line and is slidably connected, and this extends flat tube
(61) right end is connect with taper needle (9)；Another extends flat tube (61) and is located at the inside that line segment draws flat tube (41), this prolongs
It stretches the inner wall that flat tube (61) draws flat tube (41) with line segment to be slidably connected, and this extends the right end and clamping device of flat tube (61)
(8) it connects；Two surfaces for extending flat tube (61) offer guide groove (62), bar shaped track (13) and track strip (43) with
Guide groove (62) sliding is clamped, and is equipped with the second graduation mark (63) before two extension flat tubes (61), two extension flat tubes
(61) left end is respectively connected with elastic thread (64), the left side of the end of an elastic thread (64) and straight line drafting flat tube (11) inner cavity
The end of face connection, another elastic thread (64) is connect with the left side that line segment draws flat tube (41) inner cavity, is extended flat tube (61)
To be equipped with length fixed device (7) for inside.
7. a kind of Geography drawing rule according to claim 6, it is characterised in that: the length is fixed device (7)
Including locating sleeve (71) and directive wheel (79), directive wheel (79) is located at the right end for extending flat tube (61), directive wheel (79) with prolong
The inner wall for stretching flat tube (61) is fixedly connected, and locating sleeve (71) is located at the left end for extending flat tube (61), the bottom of locating sleeve (71)
It holds and is connect with the bottom surface for extending flat tube (61) inner cavity, the top movable sleeve of locating sleeve (71) is connected to elevating lever (72), elevating lever
(72) top extends to the outside for extending flat tube (61) and is connected with movable plate (73), and the top surface of movable plate (73) is connected with solid
Determine ratchet (74), fixed ratchet (74) can be engaged with clamping ratchet (14) and lock ratchet (44), and the outside of elevating lever (72) is solid
Surely it is socketed with to be located at and extends flat tube (61) internal lifter plate (75), the top surface of lifter plate (75) is connected with stretch cord (76), bullet
The other end of power rope (76) is connect with the top surface for extending flat tube (61) inner cavity, and stretch cord (76) is in tensional state, lifter plate (75)
Bottom surface be connected with patchcord (77), the other end of patchcord (77) is connect with the bottom surface for extending flat tube (61) inner cavity, patchcord
(77) it is connected in the middle part of drag wire (78), the other end of drag wire (78) around directive wheel (79) and extends to extension flat tube
(61) outside and it is connected with lifting ring (70).
8. a kind of Geography drawing rule according to claim 1, it is characterised in that: the clamping device (8) includes
Shell (801) is connect before shell (801) with the end for extending flat tube (61), and shell offers loose slot before (801)
(802) it is connected with the first fixture block (804) with inserting hole (803), the right side of shell (801) inner cavity, a left side for the first fixture block (804)
Side offers the first clip slot (805), and the left side of the first fixture block (804) is connected with slide bar (806), slide bar (806) it is another
End is connect with the left side of shell (801) inner cavity, and the external activity of slide bar (806) is socketed with the second fixture block (807), the second fixture block
(807) inner wall with shell (801) is slidably connected, and the right side of the second fixture block (807) offers the second clip slot (808), and first
Anti-slop serrations (809), the first clip slot (805) and the second clip slot are respectively connected on the inner surface of clip slot (805) and the second clip slot (808)
(808) drawing pen (810) are equipped between, the end of drawing pen (810) and anti-slop serrations (809) connects, drawing pen (810) with
Inserting hole (803) pivot bush unit is connected with push rod (811) before the second fixture block (807), and the front end of push rod (811), which passes through, lives
Dynamic slot (802) and the outside for extending to shell (801), the external activity of slide bar (806) are socketed with clamp springs (812), are clamped
One end of spring (812) is connect with the second fixture block (807), the other end of clamp springs (812) and the left side of shell (801) inner cavity
Face connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910692789.4A CN110341353B (en) | 2019-07-30 | 2019-07-30 | Drawing rule for geography discipline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910692789.4A CN110341353B (en) | 2019-07-30 | 2019-07-30 | Drawing rule for geography discipline |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110341353A true CN110341353A (en) | 2019-10-18 |
| CN110341353B CN110341353B (en) | 2020-10-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910692789.4A Active CN110341353B (en) | 2019-07-30 | 2019-07-30 | Drawing rule for geography discipline |
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| Country | Link |
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| CN (1) | CN110341353B (en) |
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| US5915806A (en) * | 1996-05-30 | 1999-06-29 | Levee; Kevin M. | Multi-function square |
| US20080034599A1 (en) * | 2005-11-28 | 2008-02-14 | George Gatewood Hamilton | Modular Multipurpose Carpenter's Tool |
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| Publication number | Publication date |
|---|---|
| CN110341353B (en) | 2020-10-02 |
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