CN206568781U - Engineering drawing rectangle lead for retractable pencil sharpener - Google Patents
Engineering drawing rectangle lead for retractable pencil sharpener Download PDFInfo
- Publication number
- CN206568781U CN206568781U CN201720006580.4U CN201720006580U CN206568781U CN 206568781 U CN206568781 U CN 206568781U CN 201720006580 U CN201720006580 U CN 201720006580U CN 206568781 U CN206568781 U CN 206568781U
- Authority
- CN
- China
- Prior art keywords
- grinding
- retractable pencil
- lead
- box
- ground
- 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.)
- Expired - Fee Related
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Abstract
The utility model is related to a kind of stationery, specifically a kind of engineering drawing rectangle lead for retractable pencil sharpener.Meet the rectangle lead for retractable pencil of specific thickness for being fast and effectively ground out.The utility model includes a grinding box, it is ground box and is similar to a groove-like structure, it is parallel and symmetrical with above and below grinding cassette bottom portion difference that it is ground box entrance area, the surface of the grinding area at two between grinding box entrance area and grinding cassette bottom portion has the function of grinding lead for retractable pencil up and down, the afterbody of grinding box has a handle, and each side there is opening at one in grinding cassette bottom portion.The utility model improves the efficiency for making rectangle lead for retractable pencil compared with prior art, accelerates plotting speed and ensure that drawing quality, and the lead dust after grinding will not be sticked on hand, easy to use, is particularly suitable for using when manual drawing engineering drawing.
Description
Technical field
The utility model is related to a kind of stationery, specifically a kind of engineering drawing rectangle lead for retractable pencil sharpener.
Background technology
At present, it usually may require that during manual drawing engineering drawing and use a kind of pencil for drawing heavy line.It will
Ask as a kind of certain thickness rectangle lead for retractable pencil.Existing solution is first to be peeled off the timber wrapped up on lead for retractable pencil with pocket knife.So
Afterwards again with pocket knife slowly by expose come cylindrical lead for retractable pencil cut rectangular similar shape, finally with a piece of sand paper by lead for retractable pencil
It is polished into suitable thickness.But during the cylindrical lead for retractable pencil of cutting, the scraping force direction and the axis of pencil of pocket knife blade
Direction is angled, it is easy to which fragile pencil-lead fractures, in addition, two faces of the rectangle lead for retractable pencil that pocket knife is cut out are also very
Difficulty reaches parallel requirement.And during being polished with sand paper, the thickness of rectangle lead for retractable pencil is difficult to control to.And the angle of polishing
It is difficult to keep, it is very difficult to reach the standard being parallel to each other.The rectangle lead for retractable pencil for meeting specific thickness can not be fast and effectively cut out,
Also the speed and quality of drawing are have impact on while inefficiency.
The content of the invention
The purpose of this utility model is that the defect for solving existing instrument can fast and effectively be ground out symbol there is provided one kind
Close the engineering drawing rectangle lead for retractable pencil sharpener of the rectangle lead for retractable pencil of specific thickness.
To achieve these goals, the utility model employs following technical scheme：A kind of engineering drawing rectangle lead for retractable pencil
Sharpener, mainly includes a grinding box, and described grinding box is similar to hollow groove-like structure, grinding box entrance area and
Be ground cassette bottom portion respectively above and below it is parallel and symmetrical and described up and down at two grinding box entrance area and grinding cassette bottom portion it
Between grinding area surface have grinding lead for retractable pencil function.
As the further improvement of the technical program, described grinding box entrance should be in 5 millis to the depth in grinding cassette bottom portion
It is more than rice.
As the further improvement of the technical program, described grinding box entrance area, its gap should be arrived at 1.0 millimeters
Within 1.8 millimeters.
As the further improvement of the technical program, described grinding cassette bottom portion, its gap should be at 0.4 millimeter to 0.9 milli
Within rice.
As the further improvement of the technical program, two above and below described grinding box at grinding area be use circular arc side
Formula transition.
As the further improvement of the technical program, described grinding box afterbody has a handle.
As the further improvement of the technical program, each side there is opening at one in described grinding cassette bottom portion.
The utility model compared with prior art, has the advantages that：The utility model can not only be ground general
The pen core of logical pencil, can also be ground the equivalent specifications lead for retractable pencil being placed on drawing compass.And be difficult to rub lead for retractable pencil.It is ground out
Lead for retractable pencil column part and rectangle part between arc structure is presented naturally, rectangle lead for retractable pencil is not easy to break during use
It is disconnected.And the addition of handle, gripped sharpener is more consolidated, and indefatigability.Function above, which is improved, grinds rectangle lead
The efficiency of core, has saved the time, accelerates plotting speed, it is ensured that drawing quality, and the lead dust after grinding can nature the bottom of along
The opening of the portion left and right sides is poured out, and will not be sticked on hand, uses health, convenient.
Brief description of the drawings
Fig. 1 is main structure diagram of the present utility model.Fig. 2 is left view profile of the present utility model.Reference
Explanation：1 grinding box, 2 top grinding areas, 3 bottom grinding areas, 4 openings, 5 handles.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Referring to Fig. 1, Fig. 2, the utility model structure includes a grinding box 1.Be ground box 1 entrance area above and below it is parallel and
It is symmetrical, between have certain gap, just can will prune parcel timber cylindrical lead for retractable pencil insertion, to fix lead for retractable pencil
Position, does not make to rock above and below lead for retractable pencil.And it is also parallel and symmetrical up and down in grinding box 1 bottom, gap is compared with inlet region
Domain is smaller, for the fixed finished product rectangle lead for retractable pencil being ground.At two between grinding box entrance area and grinding cassette bottom portion
The surface of grinding area, is top grinding area 2 and bottom grinding area 3 with grinding capacity, for by cylindrical lead for retractable pencil
It is milled into meeting the rectangle lead for retractable pencil of standard thickness.After grinding, lead dust can be poured out voluntarily from opening 4.
In use, the parcel timber above common pencil is pruned with pocket knife first, completely exposed circle should be made
Cylindricality lead for retractable pencil length exceedes the depth that the utility model is ground box, and then a hand will peel off the cylindrical lead of parcel timber
Core inserts sharpener entrance area, and another hand grips the handle 5 of the utility model afterbody.Then pencil is slowly injected to grinding
Box, and do and move back and forth along the horizontal direction of entrance area, until the pen core of pencil reaches the bottom of grinding box, obtain
The rectangle lead for retractable pencil of specific thickness.When grinding, lead dust can be poured out from the opening of the grinding cassette bottom portion left and right sides.
The utility model is particularly suitable for using when manual drawing engineering drawing.
It is the known technology of those skilled in the art in addition to the technical characteristic described in specification.
Claims (7)
1. a kind of engineering drawing rectangle lead for retractable pencil sharpener, described rectangle lead for retractable pencil sharpener includes a grinding box, its feature exists
In：It is ground box and is similar to a groove-like structure；It is ground box entrance area parallel and symmetrical with above and below grinding cassette bottom portion difference,
The surface of described grinding area up and down at two between grinding box entrance area and grinding cassette bottom portion has the work(of grinding lead for retractable pencil
Energy.
2. engineering drawing rectangle lead for retractable pencil sharpener according to claim 1, it is characterised in that：Box entrance is ground to grinding box
The depth of bottom should be more than 5 millimeters.
3. engineering drawing rectangle lead for retractable pencil sharpener according to claim 1, it is characterised in that：It is ground box entrance area gap
Should be within 1.0 millimeters to 1.8 millimeters.
4. engineering drawing rectangle lead for retractable pencil sharpener according to claim 1, it is characterised in that：The gap for being ground cassette bottom portion should
Within 0.4 millimeter to 0.9 millimeter.
5. engineering drawing rectangle lead for retractable pencil sharpener according to claim 1, it is characterised in that：It is ground at two above and below box and is ground
Region is the circular arc wise manner transition used.
6. engineering drawing rectangle lead for retractable pencil sharpener according to claim 1, it is characterised in that：Have one in the afterbody of grinding box
Individual handle.
7. engineering drawing rectangle lead for retractable pencil sharpener according to claim 1, it is characterised in that：In bottom of grinding box or so
Respectively there is opening at one both sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720006580.4U CN206568781U (en) | 2017-01-04 | 2017-01-04 | Engineering drawing rectangle lead for retractable pencil sharpener |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720006580.4U CN206568781U (en) | 2017-01-04 | 2017-01-04 | Engineering drawing rectangle lead for retractable pencil sharpener |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206568781U true CN206568781U (en) | 2017-10-20 |
Family
ID=60061437
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720006580.4U Expired - Fee Related CN206568781U (en) | 2017-01-04 | 2017-01-04 | Engineering drawing rectangle lead for retractable pencil sharpener |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206568781U (en) |
-
2017
- 2017-01-04 CN CN201720006580.4U patent/CN206568781U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171020 Termination date: 20190104 |