CN103707689A - Pencil lengthener - Google Patents
Pencil lengthener Download PDFInfo
- Publication number
- CN103707689A CN103707689A CN201210379142.4A CN201210379142A CN103707689A CN 103707689 A CN103707689 A CN 103707689A CN 201210379142 A CN201210379142 A CN 201210379142A CN 103707689 A CN103707689 A CN 103707689A
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- China
- Prior art keywords
- pencil
- processed
- diameter
- push rod
- internal thread
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- Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
Abstract
The invention discloses a pencil lengthener comprising a body and an ejector rod. The body is cylindrical. The inner diameter of an inner hole of the body is larger than the maximum outer diameter of the pencil. One end of the inner hole of the body is provided with a tapered hole matching with a conical surface of a nib of the pencil. The other end of the inner end of the body is provided with an internal thread. The inner diameter of the internal thread is slightly larger than the outer diameter of the pencil and smaller than the inner diameter of the inner hole of the body. The ejector rod is in the shape of a slender round rod. One end of the ejector rod is provided with an external thread in threaded fit with the internal thread of the body, and the other end of the ejector rod is a polished part with outer diameter smaller than that of the external thread. The pencil lengthener enables the pencil to be more durable and more available, is attractive in appearance and has the advantages of ease of manufacture and convenience of use.
Description
Technical field
The present invention relates to a kind of stationery, refer in particular to a kind of pencil elongated device.
Background technology
Conventional pencil, due to the consumption of lead for retractable pencil, can now, because hand can not grip remaining very short pencil completely, cause and can not normally write more with shorter, often abandons, and waste greatly.
Summary of the invention
The problem to be solved in the present invention is the deficiency overcoming in background technology, and a kind of pencil elongated device is provided, and this pencil elongated device, can be used very short pencil stub, is unlikely to abandon too early.
For addressing the above problem, the present invention takes following technical scheme:
A kind of pencil elongated device of the present invention, by body, push rod, formed, described body is cylindrical, the endoporus internal diameter of body is greater than the maximum outside diameter of pencil, at endoporus place, one end of body, be processed with the conical bore that can fit with pencil point taper seat, other end endoporus place at body is processed with internal thread, the internal diameter of described internal thread is slightly larger than the external diameter of pencil, be less than the endoporus internal diameter of body, described push rod is elongated round bar shape, and one end of push rod is processed with external screw thread, becomes threaded engagement with the internal thread of body, the other end is polished rod, and external diameter is less than externally threaded external diameter.
A corrective measure of the present invention is that one end periphery that described body is placed pencil is processed into the conical surface.
Another corrective measure of the present invention is that the end face of the male end of described push rod is processed with " one " font groove, is convenient to straight screwdriver push rod precession or back-out.
A kind of pencil elongated device of the present invention, because body is cylindrical, the endoporus internal diameter of body is greater than the maximum outside diameter of pencil, at endoporus place, one end of body, be processed with the conical bore that can fit with pencil point taper seat, other end endoporus place at body is processed with internal thread, the internal diameter of internal thread is slightly larger than the external diameter of pencil, be less than the endoporus internal diameter of body, described push rod is elongated round bar shape, one end of push rod is processed with external screw thread, become threaded engagement with the internal thread of body, the other end is polished rod, and external diameter is less than externally threaded external diameter.Therefore, too short pencil can be put into from the threaded interior hole end of body, then pushes with push rod, simultaneously by threaded engagement, pencil is tightly headed into the conical surface end of body, grasps body, gets final product Free Writing.The present invention has not only extended the service life of pencil, has improved the utilization rate of pencil, and good looking appearance, has advantages of easy manufacture, easy to use.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
The specific embodiment
As shown in Figure 1, a kind of pencil elongated device of the present invention, by body 1, push rod 2 forms, described body 1 is cylindrical, the endoporus internal diameter of body 1 is greater than the maximum outside diameter of pencil 3, at endoporus place, one end of body 1, be processed with the conical bore 11 that can fit with pencil 3 nib taper seats, other end endoporus place at body 1 is processed with internal thread 12, the internal diameter of described internal thread 12 is slightly larger than the external diameter of pencil 3, be less than the endoporus internal diameter of body 1, described push rod 2 is elongated round bar shape, one end of push rod 2 is processed with external screw thread 21, 12 one-tenth threaded engagement of internal thread with body 1, the other end is polished rod, external diameter is less than the external diameter of external screw thread 21.
One end periphery that described body 1 is placed pencil 3 is processed into the conical surface 13.
The end face of external screw thread 21 ends of described push rod 2 is processed with " one " font groove 22.
Claims (3)
1. a pencil elongated device, by body (1), push rod (2) forms, it is characterized in that: described body (1) is cylindrical, the endoporus internal diameter of body (1) is greater than the maximum outside diameter of pencil (3), at the endoporus place, one end of body (1), be processed with the conical bore (11) that can fit with pencil (3) nib taper seat, other end endoporus place at body (1) is processed with internal thread (12), the internal diameter of described internal thread (12) is slightly larger than the external diameter of pencil (3), be less than the endoporus internal diameter of body (1), described push rod (2) is elongated round bar shape, one end of push rod (2) is processed with external screw thread (21), become threaded engagement with the internal thread (12) of body (1), the other end is polished rod, external diameter is less than the external diameter of external screw thread (21).
2. a kind of pencil elongated device according to claim 1, is characterized in that: one end periphery that described body (1) is placed pencil (3) is processed into the conical surface (13).
3. a kind of pencil elongated device according to claim 1, is characterized in that: the end face of external screw thread (21) end of described push rod (2) is processed with " one " font groove (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210379142.4A CN103707689A (en) | 2012-10-09 | 2012-10-09 | Pencil lengthener |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210379142.4A CN103707689A (en) | 2012-10-09 | 2012-10-09 | Pencil lengthener |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103707689A true CN103707689A (en) | 2014-04-09 |
Family
ID=50401193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210379142.4A Pending CN103707689A (en) | 2012-10-09 | 2012-10-09 | Pencil lengthener |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103707689A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107914487A (en) * | 2017-12-05 | 2018-04-17 | 佛山君帝环保科技有限公司 | A kind of dismountable pencil extending rod |
-
2012
- 2012-10-09 CN CN201210379142.4A patent/CN103707689A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107914487A (en) * | 2017-12-05 | 2018-04-17 | 佛山君帝环保科技有限公司 | A kind of dismountable pencil extending rod |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140409 |