CN203902040U - Pencil for drawing with compasses and ruler - Google Patents
Pencil for drawing with compasses and ruler Download PDFInfo
- Publication number
- CN203902040U CN203902040U CN201420311536.0U CN201420311536U CN203902040U CN 203902040 U CN203902040 U CN 203902040U CN 201420311536 U CN201420311536 U CN 201420311536U CN 203902040 U CN203902040 U CN 203902040U
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- Prior art keywords
- pencil
- lead
- retractable
- reconditioning
- retractable pencil
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- Expired - Lifetime
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- 238000004804 winding Methods 0.000 claims description 16
- 238000010276 construction Methods 0.000 claims description 14
- 238000000034 method Methods 0.000 abstract description 6
- 238000013507 mapping Methods 0.000 description 20
- 230000015572 biosynthetic process Effects 0.000 description 6
- 238000000465 moulding Methods 0.000 description 6
- 208000029152 Small face Diseases 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 239000007767 bonding agent Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 210000003811 finger Anatomy 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000010422 painting Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 244000309464 bull Species 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000005224 forefinger Anatomy 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 210000003813 thumb Anatomy 0.000 description 1
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- Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
Abstract
The utility model discloses a pencil for drawing with a pair of compasses and a ruler. The pencil comprises one or two pencil leads arranged in the same pencil holder in a wrapped mode. The two pencil leads are arranged at the two ends of the pencil holder respectively. The sizes of the end faces of the two pencil leads are different. The pencil holder is formed by paper wrapped outside the pencil leads. The pencil leads arranged in the pencil holder in the wrapped mode are of a flat quadrangular structure. A plurality of grinding base lines are arranged on the wide prism surface of each pencil lead in sequence in the length direction of the pencil lead. An included angle ranging from 10 degrees to 30 degrees is formed between the extension line of each grinding base line and the extension line of the end face of the corresponding pencil lead. According to the pencil for drawing with the compasses and the ruler, the referential grinding base lines are arranged on the flat quadrangular pencil leads of the pencil made of paper, so that the shapes, obtained after being ground by the same person the first time and the second time or different persons, of the end faces of the pencil leads always keep highly consistent; moreover, the end faces of the pencil leads are in surface contact with a drawing paper in the drawing process, and accordingly the drawing quality is effectively and reliably improved.
Description
Technical field
The utility model relates to pencil, specifically a kind of pencil special of construction with ruler and compasses.
Background technology
Construction with ruler and compasses refers to ruler and compasses and maps, and plotting quality is that the accurate selection by basic point guarantees with the high-quality lines (being that every thick line or fine rule keep uniformity) that are connected each basic point.
Conventional mapping pencil has general and special use two kinds.Wherein, general pencil refers to except for can also be for writing etc. mapping, its lead for retractable pencil is generally column structure, lead for retractable pencil end after skiving is coniform conventionally, fineness degree along with the attrition same lines of lead for retractable pencil in mapping cannot keep uniformity, plotting quality is not high and skiving number of times is frequent, very inapplicable in mapping; Pencil special refers to and is mainly used in, is also applicable to very much the pencil of mapping, its lead for retractable pencil is generally quadrangular structure, has specific thickness (Chinese patent literature disclosed " square core bull movement drawing pencil " for example, its publication number: CN2117994, open day: on October 07th, 1992), in mapping, a faceted pebble contacts, draws the lines (referring to same lines) that fineness degree keeps uniformity with drawing, plotting quality is higher, and reconditioning number of times is relatively low.Yet, no matter be general pencil or pencil special, it is in mapping process, all need be along with the attrition of lead for retractable pencil is carried out the processing of reconditioning repeatedly, on lead for retractable pencil due to existing pencil, do not have specific reconditioning to process benchmark, it is all by operating personnel's subjective experience judgement that each reconditioning is processed, so same people in front and back time or the lead for retractable pencil end surface shape that obtains of different people institute reconditioning be not quite similar, and then directly affect plotting quality when mapping.
Summary of the invention
The purpose of this utility model is: the particularity requiring for above-mentioned mapping and the deficiency of existing mapping pencil, provide a kind of simple in structure, easy to use, construction with ruler and compasses pencil of effectively and reliably improving plotting quality.
The technical solution adopted in the utility model is: a kind of construction with ruler and compasses pencil, comprise one piece or the two piece lead for retractable pencils of winding up in same penholder, described two lead for retractable pencils split two ends at penholder, their face size is different, and described penholder is that the papery on lead for retractable pencil forms by winding up; The lead for retractable pencil of described winding up in penholder is flat-shaped quadrangular structure, and the length direction along lead for retractable pencil on the wide rhombus of lead for retractable pencil is furnished with some reconditioning baselines successively, and the end face extended line of the extended line of each reconditioning baseline and lead for retractable pencil forms the angle of 10～30 °.
Further, the end surface thickness of the two piece lead for retractable pencils of described winding up in same penholder is respectively 0.7～1mm, 0.25～0.35mm.
Further, the reconditioning baseline on described lead for retractable pencil is arranged in the wide rhombus both sides of lead for retractable pencil, and the reconditioning baseline position of both sides staggers or be symmetrical along the center line of lead for retractable pencil.
Further, the reconditioning baseline on described lead for retractable pencil is arranged in the mode of drawing.
Further, on described lead for retractable pencil, the distance between the adjacent reconditioning baseline of same row is 2～6mm.
As preferred version, the curved Rhizoma Sparganii shape of the end face appearance profile of described penholder.
Further, described arc Rhizoma Sparganii shape penholder is smoothly to be crowded around and form in alternate mode by three long arcs and three short arcs; The radius of described long arc is 10～15mm; The radius of described short arc is 2～3mm.
The beneficial effects of the utility model are:
1. the lead for retractable pencil of single head (only having a lead for retractable pencil) or double end (having two lead for retractable pencils that face size is different) paper-holder pencil is arranged to flat-shaped quadrangular structure, and the length direction along lead for retractable pencil is arranged successively on the wide rhombus of this lead for retractable pencil, some the reconditioning baselines with special angle, thereby in mapping process along with the attrition of lead for retractable pencil, during reconditioning, there is the reference of specific reconditioning benchmark, effectively, eliminated reliably the drawback of artificial subjective reconditioning, no matter be that the lead for retractable pencil end surface shape that same people is inferior in front and back or the reconditioning of different people institute obtains is to keep highly consistent all the time, and then effectively, improved reliably plotting quality, in addition, reconditioning baseline on lead for retractable pencil human body when writing hold a pen and writing plane between angle (approximately 60～80 °) and reasonable Arrangement, that is to say lead for retractable pencil end that reconditioning is good when human body is held mapping, have and the plane that drawing maintenance face contacts that spreads in plane, thereby pencil is moved freely in mapping, it is smooth that laborsaving and institute paints that the lines flow smoothly, not only improve greatly operation ease, and further improved plotting quality,
2. by the appearance profile of penholder being arranged to arc three fusiform structures, when holding mapping, middle finger, forefinger and thumb are pinched respectively an attached face, hold sense well, be difficult for slippage (effectively having overcome the defect of holding of traditional round column penholder), simultaneously, hold for a long time mapping and be unlikely to again to make finger to produce the sense of fatigue (effectively having overcome the defect of holding that traditional six prisms, eight prisms etc. are similar to circular polygon pen holder) of aching, practical.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is further described.
Fig. 1 is a kind of structural representation of the present utility model.
Fig. 2 is that the A of Fig. 1 is to view.
Fig. 3 is another kind of structural representation of the present utility model.
Fig. 4 is the partial enlarged drawing of lead for retractable pencil in Fig. 1 and Fig. 3.
Code name implication in figure: 1-penholder; 2-lead for retractable pencil; 21-end face; 22-reconditioning baseline.
The specific embodiment
embodiment 1
Referring to Fig. 1, Fig. 2 and Fig. 4: the special-purpose paper-holder pencil that the utility model is construction with ruler and compasses, it has a lead for retractable pencil 2 and winding up formed papery penholder 1 on lead for retractable pencil 2.
Wherein, for the ease of in use holding, the curved Rhizoma Sparganii shape of end face appearance profile of above-mentioned penholder 1, this arc Rhizoma Sparganii shape is in alternate mode, smoothly to be crowded around and formed (being similar to clinical thermometer pack case) by three long arcs and three short arcs, the radius value that requires long arc is at 10～15mm(, 10～12.5mm for example, or 11～14mm, also or 13～15mm etc.) choose reasonable in scope, the radius value of short arc is at 2～3mm(, 2～2.4mm for example, or 2.2～2.7mm, also or 2.5～3mm etc.) choose reasonable in scope, long, the radius value of short arc is excessive or the too small face size (being the diameter value of penholder) of moulding penholder that all can make is excessive or too small, and then the comfort held of impact.The curved Rhizoma Sparganii shape of penholder end face appearance profile due to aforementioned paper-holder pencil, it compares traditional cylindrical outer shape profile, manufacture difficulty increases accordingly, can when moulding, consider increase corresponding bonding agent loading or filler strip etc. is set in short arc place (edges and corners).
The lead for retractable pencil 2 of above-mentioned winding up in penholder 1 is flat-shaped quadrangular structure, and lead for retractable pencil 2 has two relative narrow faceted pebbles and two relative wide rhombus.In the utility model, the wide rhombus of lead for retractable pencil 2 is used for arranging reconditioning baseline 22, narrow faceted pebble for drawing lines on drawing, thereby according to mapping requirement, the narrow faceted pebble thickness of lead for retractable pencil 2 can be selected the thick lines that require in 0.7～1mm(drafting standard) or the hachure that requires of 0.25～0.35mm(drafting standard), occurrence can be in aforementioned range choose reasonable.Because aforesaid lead for retractable pencil 2 wide rhombus are used for arranging reconditioning baseline 22, thereby in order to make reconditioning baseline 22 clearly visible on lead for retractable pencil 2, can consider the value of wide rhombus to arrange to be greater than the mode of 2～5 times of narrow faceted pebbles, such as 3 times etc.The upper length direction along lead for retractable pencil of wide rhombus (wide rhombus) at aforementioned lead for retractable pencil 2 is furnished with some this formation one row of alongst arranging successively of reconditioning baseline 22(successively), before and after the preferred 2～6mm of distance between adjacent reconditioning baseline 22, for example 2mm or 4mm, also or this scope of 6mm(select the lead for retractable pencil length according to plane pencil exposes conventionally), require the extended line of each reconditioning baseline 22 and the end face 21(writing end of lead for retractable pencil 2 only in the original state of not reconditioning, just to have this end face 21, after use along with this end face 21 of attrition does not exist) extended line forms angle α, the value of this angle α is held pen according to human body, while writing and the angle forming between writing plane (pen axis and the angle between writing plane), conventionally scope is 60～80 °, be that the angle α of 10～30 ° of the extended line of each reconditioning baseline 22 and the 21 extended lines formation of the end face of lead for retractable pencil 2 is (under this value, when pencil is erect on writing plane, when the initial end face of pencil contacts with writing plane formation face, the axis of pencil is vertical, at least highly to approach perpendicular to writing plane), for example 10 °, or 15 °, or 20 °, also or 30 ° etc., each reconditioning baseline 22 forms after the angle of same value with the end face 21 of lead for retractable pencil 2, each reconditioning baseline 22 is parallel to each other.
Two narrow faceted pebbles in order to ensure above-mentioned lead for retractable pencil 2 can be used alternatingly when mapping, reconditioning baseline 22 on above-mentioned lead for retractable pencil 2 is arranged in the wide rhombus both sides of lead for retractable pencil 2, on wide rhombus, form two row reconditioning baselines 22, this two row reconditioning baseline 22 both can be symmetrical along the center line of lead for retractable pencil 2, also can make their front and back, position stagger, all not affect reconditioning.
Uniformity in order to ensure above-mentioned lead for retractable pencil 2 institute's line drawing bar fineness degree in mapping process, requiring the reconditioning baseline 22 on lead for retractable pencil 2 is that the mode of painting is arranged, if the mode (forming raised tooth or groove on the surface of lead for retractable pencil) with engraving is arranged, certainly will affect institute's line drawing bar fineness degree uniformity (if with groove arrangement, lead for retractable pencil attrition during to reconditioning baseline place lines attenuate; In like manner, if can make lines chap with raised tooth layout).
embodiment 2
Other structure of the present embodiment is identical with embodiment 1, and difference is: the papery penholder of institute's winding up on lead for retractable pencil is rolled into end face appearance profile rounded, or six prismatics, also or eight prismatics etc.Though holding of this structure of pen holder felt not as good as the preferred arc Rhizoma Sparganii of the utility model shape, the lead for retractable pencil of its winding up can be realized goal of the invention of the present utility model equally.
embodiment 3
Referring to Fig. 3 and Fig. 4: the special-purpose paper-holder pencil that the utility model is construction with ruler and compasses, it has two lead for retractable pencil 2 and winding up formed papery penholders 1 on these two lead for retractable pencils 2 that face size is different.Require these two lead for retractable pencils 2 to keep coaxially arranged when winding up moulding, two of moulding paper-holder pencil lead for retractable pencils 2 split the two ends at penholder 1.This at the different lead for retractable pencil 2 of two face sizes of same penholder 1 interior winding up, can make a pencil realize the corresponding drafting of thick lines and hachure.According to drafting standard requirement, in different two lead for retractable pencils 2 of aforementioned face size, larger-size end surface thickness is that the end surface thickness that 0.7～1mm, size are less is 0.25～0.35mm.
Wherein, for the ease of in use holding, the curved Rhizoma Sparganii shape of end face appearance profile of above-mentioned penholder 1, this arc Rhizoma Sparganii shape is in alternate mode, smoothly to be crowded around and formed (being similar to clinical thermometer pack case) by three long arcs and three short arcs, the radius value that requires long arc is at 10～15mm(, 10～12.5mm for example, or 11～14mm, also or 13～15mm etc.) choose reasonable in scope, the radius value of short arc is at 2～3mm(, 2～2.4mm for example, or 2.2～2.7mm, also or 2.5～3mm etc.) choose reasonable in scope, long, the radius value of short arc is excessive or the too small face size (being the diameter value of penholder) of moulding penholder that all can make is excessive or too small, and then the comfort held of impact.The curved Rhizoma Sparganii shape of penholder end face appearance profile due to aforementioned paper-holder pencil, it compares traditional cylindrical outer shape profile, manufacture difficulty increases accordingly, and can when moulding, consider increases corresponding bonding agent loading or filler strip etc. (can with reference to shown in Fig. 2) is set in short arc place (edges and corners).
The two piece lead for retractable pencils 2 of above-mentioned winding up in penholder 1 are respectively flat-shaped quadrangular structure, and every lead for retractable pencil 2 has two relative narrow faceted pebbles and two relative wide rhombus.In the utility model, the wide rhombus of every lead for retractable pencil 2 is used for arranging that reconditioning baseline 22, narrow faceted pebble are for draw lines on drawing, thereby the thickness of above-mentioned two lead for retractable pencils 2 refers to their narrow faceted pebble thickness.Because the wide rhombus of aforementioned every lead for retractable pencil 2 is used for arranging reconditioning baseline 22, thereby in order to make reconditioning baseline 22 clearly visible on lead for retractable pencil 2, can consider the wide rhombus value of every lead for retractable pencil 2 to arrange to be greater than the mode of 2～5 times of its narrow faceted pebbles, such as 3 times etc.The upper length direction along this lead for retractable pencil of wide rhombus (wide rhombus) at aforementioned every lead for retractable pencil 2 is furnished with some this formation one row of alongst arranging successively of reconditioning baseline 22(successively), before and after the preferred 2～6mm of distance between adjacent reconditioning baseline 22, for example 2mm or 4mm, also or this scope of 6mm(select the lead for retractable pencil length according to plane pencil exposes conventionally), require the extended line of each reconditioning baseline 22 on every lead for retractable pencil 2 and the end face 21(writing end of this lead for retractable pencil 2 only in the original state of not reconditioning, just to have this end face 21, after use along with this end face 21 of attrition does not exist) extended line forms angle α, the value of this angle α is held pen according to human body, while writing and the angle forming between writing plane (pen axis and the angle between writing plane), conventionally scope is 60～80 °, be that the angle α of 10～30 ° of the extended line of each reconditioning baseline 22 and the 21 extended lines formation of the end face of lead for retractable pencil 2 is (under this value, when pencil is erect on writing plane, when the initial end face of pencil contacts with writing plane formation face, the axis of pencil is vertical, at least highly to approach perpendicular to writing plane), for example 10 °, or 15 °, or 20 °, also or 30 ° etc., each reconditioning baseline 22 forms after the angle of same value with the end face 21 of lead for retractable pencil 2, each reconditioning baseline 22 is parallel to each other.
Two narrow faceted pebbles in order to ensure above-mentioned every lead for retractable pencil 2 can be used alternatingly when mapping, reconditioning baseline 22 on above-mentioned every lead for retractable pencil 2 is arranged in the wide rhombus both sides of this lead for retractable pencil 2, on wide rhombus, form two row reconditioning baselines 22, this two row reconditioning baseline 22 both can be symmetrical along the center line of lead for retractable pencil 2, also can make their front and back, position stagger, all not affect reconditioning.
Uniformity in order to ensure above-mentioned every lead for retractable pencil 2 institute's line drawing bar fineness degree in mapping process, requiring the reconditioning baseline 22 on every lead for retractable pencil 2 is that the mode of painting is arranged, if the mode (forming raised tooth or groove on the surface of lead for retractable pencil) with engraving is arranged, certainly will affect institute's line drawing bar fineness degree uniformity (if with groove arrangement, lead for retractable pencil attrition during to reconditioning baseline place lines attenuate; In like manner, if can make lines chap with raised tooth layout).
Above embodiment only, in order to the technical solution of the utility model to be described, is not intended to limit.Although the utility model is had been described in detail with reference to previous embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution depart from the spirit and scope of each embodiment technical scheme of the utility model.
Claims (7)
1. a construction with ruler and compasses pencil, comprises one piece or the two piece lead for retractable pencils of winding up in same penholder, and described two lead for retractable pencils split two ends at penholder, their face size is different, and described penholder is that the papery on lead for retractable pencil forms by winding up; It is characterized in that: the lead for retractable pencil of described winding up in penholder is flat-shaped quadrangular structure, length direction along lead for retractable pencil on the wide rhombus of lead for retractable pencil is furnished with some reconditioning baselines successively, and the end face extended line of the extended line of each reconditioning baseline and lead for retractable pencil forms the angle of 10～30 °.
2. construction with ruler and compasses pencil according to claim 1, is characterized in that: the end surface thickness of the two piece lead for retractable pencils of described winding up in same penholder is respectively 0.7～1mm, 0.25～0.35mm.
3. according to construction with ruler and compasses pencil described in claim 1 or 2, it is characterized in that: the reconditioning baseline on described lead for retractable pencil is arranged in the wide rhombus both sides of lead for retractable pencil, the reconditioning baseline position of both sides staggers or is symmetrical along the center line of lead for retractable pencil.
4. construction with ruler and compasses pencil according to claim 3, is characterized in that: the reconditioning baseline on described lead for retractable pencil is arranged in the mode of drawing.
5. construction with ruler and compasses pencil according to claim 3, is characterized in that: the distance on described lead for retractable pencil between the adjacent reconditioning baseline (22) of same row is 2～6mm.
6. according to construction with ruler and compasses pencil described in claim 1 or 2, it is characterized in that: the curved Rhizoma Sparganii shape of end face appearance profile of described penholder.
7. construction with ruler and compasses pencil according to claim 6, is characterized in that: described arc Rhizoma Sparganii shape penholder is smoothly to be crowded around and form in alternate mode by three long arcs and three short arcs; The radius of described long arc is 10～15mm; The radius of described short arc is 2～3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420311536.0U CN203902040U (en) | 2014-06-12 | 2014-06-12 | Pencil for drawing with compasses and ruler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420311536.0U CN203902040U (en) | 2014-06-12 | 2014-06-12 | Pencil for drawing with compasses and ruler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203902040U true CN203902040U (en) | 2014-10-29 |
Family
ID=51776332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420311536.0U Expired - Lifetime CN203902040U (en) | 2014-06-12 | 2014-06-12 | Pencil for drawing with compasses and ruler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203902040U (en) |
-
2014
- 2014-06-12 CN CN201420311536.0U patent/CN203902040U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141029 |