CN202896015U - Pencil extension device - Google Patents
Pencil extension device Download PDFInfo
- Publication number
- CN202896015U CN202896015U CN 201220591955 CN201220591955U CN202896015U CN 202896015 U CN202896015 U CN 202896015U CN 201220591955 CN201220591955 CN 201220591955 CN 201220591955 U CN201220591955 U CN 201220591955U CN 202896015 U CN202896015 U CN 202896015U
- Authority
- CN
- China
- Prior art keywords
- pencil
- tubular body
- extension device
- protective device
- openend
- 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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- Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
Abstract
The utility model relates to a pencil extension device which comprises a tubular body and a pencil protection device. One end of the tubular body is closed while the other end thereof is an open end, diameter dimension of the open end is matched with that of a pencil when the pencil extension device is in sleeve joint with the pencil, the pencil protection device is clamped in an inner cavity of the tubular body and matched with a sharpened pencil stump in shape, and a big end of the pencil protection is close to the open end of the tubular body. The pencil extension device is simple in structure, wide in material range and capable of improving utilization rate of standard pencils and reducing resource waste.
Description
Technical field
The utility model belongs to the stationery field, relates in particular to a kind of pencil extension device.
Background technology
Common pencil in use, too short when pencil, in the time of can't holding pencil, remaining pencil will be dropped, and cause very large waste.Therefore, the practical efficiency of pencil only is about 50%.
Common pencil needs to consume various resources in process of production, especially will expend a large amount of tree resources.Therefore common pencil improper use is comparatively serious to the waste of resource.
The utility model content
For the defective of above-mentioned existing common pencil, the utility model aims to provide a kind of common pencil pencil extension device in service life that prolongs, and can improve the utilization rate of common pencil, and minimizing is to the waste of resource.
The technical solution of the utility model is: a kind of pencil extension device comprises a tubular body and a pencil protective device, the sealing of tubular body one end, and the other end is openend, is complementary when the diameter dimension of openend and pencil socket; The pencil protective device is stuck in the inner chamber of tubular body, the pencil stub form fit of the shape of pencil protective device and sharpening, and the large end of pencil protective device is near the openend of tubular body.
The length of described tubular body is at least 40mm.
The length of described tubular body is 80mm.
The large end of described pencil protective device is 10-20mm to the distance of tubular body openend.
The beneficial effects of the utility model are: the pencil extension device can be socketed with common pencil, can improve the practical efficiency of common pencil after use shortens when pencil.
Simultaneously, be stuck in the pencil protective device of tubular body inner chamber when the user does not use pencil, provide protection to pencil point.
The length of pencil extension device can be the user enough gripping spaces is provided, and the material of pencil extension device can be made by resin, plastics or metal.
The utility model is simple in structure, draws materials extensively, can improve the utilization rate of common pencil, has reduced the waste to resource.
Description of drawings
Fig. 1 is the cutaway view of pencil extension device of the present utility model.
Fig. 2 is the pencil schematic diagram.
Fig. 3 is the schematic diagram (pencil be in serviceable condition) of pencil extension device when being socketed on the pencil.
Fig. 4 is the schematic diagram (pencil be in protected state) of pencil extension device when being socketed on the pencil.
Wherein, 1-pencil extension device; The 11-tubular body; 12-pencil protective device; The 2-pencil.
The specific embodiment
As shown in figs. 1 and 3, a kind of pencil extension device 1 comprises a tubular body 11, and tubular body 11 1 ends are openend, is complementary when the diameter dimension of openend and pencil 2 socket.Pencil 2 as shown in Figure 2.
The large end of described pencil protective device 12 is 10-20mm to the distance of tubular body 11 openends.
As shown in Figure 3, when needs use pencil 2, pencil extension device 1 can be socketed in the end that pencil 2 was not cut, when using pencil extension device 1, be not enough to normally hold even pencil 2 is short to, also can continue to use, reduce waste.
As shown in Figure 4, when pencil 2 did not use, in order to protect pencil 2 nibs, one at pencil 2 nibs inserted in the pencil protective device 12, and the nib of the bullet of pencil protective device 12 and pencil 2 is complementary, thereby provided protection for pencil 2 nibs.
The beneficial effects of the utility model are: can improve the pencil utilization rate, increase the service life, cut the waste.
The above only is better possible embodiments of the present utility model, is not so limits to protection domain of the present utility model, so the equivalent structure that every utilization the utility model specification and accompanying drawing content are done changes, all is contained in protection domain of the present utility model.
Claims (4)
1. a pencil extension device is characterized in that, comprises a tubular body and a pencil protective device, the sealing of tubular body one end, and the other end is openend, is complementary when the diameter dimension of openend and pencil socket; The pencil protective device is stuck in the inner chamber of tubular body, the pencil stub form fit of the shape of pencil protective device and sharpening, and the large end of pencil protective device is near the openend of tubular body.
2. pencil extension device as claimed in claim 1 is characterized in that, the length of described tubular body is at least 40mm.
3. pencil extension device as claimed in claim 2 is characterized in that, the length of described tubular body is 80mm.
4. pencil extension device as claimed in claim 1 is characterized in that, the large end of described pencil protective device is 10-20mm to the distance of tubular body openend.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220591955 CN202896015U (en) | 2012-11-12 | 2012-11-12 | Pencil extension device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220591955 CN202896015U (en) | 2012-11-12 | 2012-11-12 | Pencil extension device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202896015U true CN202896015U (en) | 2013-04-24 |
Family
ID=48116723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220591955 Expired - Fee Related CN202896015U (en) | 2012-11-12 | 2012-11-12 | Pencil extension device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202896015U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106476217A (en) * | 2016-12-21 | 2017-03-08 | 杭州乐守科技有限公司 | Pen cap production mould, entity |
-
2012
- 2012-11-12 CN CN 201220591955 patent/CN202896015U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106476217A (en) * | 2016-12-21 | 2017-03-08 | 杭州乐守科技有限公司 | Pen cap production mould, entity |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130424 Termination date: 20141112 |
|
| EXPY | Termination of patent right or utility model |