CN2728780Y - Holder for short pencil - Google Patents
Holder for short pencil Download PDFInfo
- Publication number
- CN2728780Y CN2728780Y CN 200420096798 CN200420096798U CN2728780Y CN 2728780 Y CN2728780 Y CN 2728780Y CN 200420096798 CN200420096798 CN 200420096798 CN 200420096798 U CN200420096798 U CN 200420096798U CN 2728780 Y CN2728780 Y CN 2728780Y
- Authority
- CN
- China
- Prior art keywords
- hand
- pencil
- push rod
- diameter
- spring
- 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
Links
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- Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
Abstract
The utility model provides a holder for short pencil, which relates to a hand-held rod. A centre hole is arranged along the axial center of the hand-held rod, a section socket concentric with the centre hole and corresponding to the outer diameter of the pencil rod is arranged at the front end of the hand-held rod, and a section spring hole is arranged at the back end of the hand-held rod, the spring hole concentric with the centre hole and the diameter of the spring hole is larger than the diameter of the centre hole. A push rod is travelled through the center hole, the T-shaped projecting head at the front end of the push rod is positioned in the socket, a compression spring is sheathed on the back part of the push rod, and a press cap is fixedly connected with the back end of the push rod; both end of the spring are supported between the front end of the spring hole and the press cap, an inner hole which diameter is larger than the outer diameter of the hand-held rod is arranged at the front part of the press cap, and the back end of the hand-held rod is contained inside the inner hole of the press cap. The pencil head which is too short to use can be consecutively used by using the holder for short pencil to avoid the wasting because of the abandon of the pencil head, and the pencil head is easy to be pushed off, and the cost of the holder for short pencil is low.
Description
Technical field:
The utility model relates to a kind of student's study article, is to be used for the pencil stub spreading to the extension bar of conveniently holding.
Background technology:
Pencil in use can be cut shorter and shorter, grips with regard to inconvenient writer after pencil is short to a certain degree, and remaining pencil stub just can only be abandoned, and causes certain waste, also is not convenient for to cultivate the hard and plain style of student.
Summary of the invention:
The purpose of this utility model provides a kind of pencil extension bar, is used for the pencil stub spreading is continued to use to conveniently holding.
The purpose of this utility model realizes as follows: this pencil extension bar relates to a hand-held pole, there is a centre bore at hand-held pole center vertically, the front end of hand-held pole have one section with centre bore jack concentric and that adapt with the pencil shaft external diameter, this jack is used in rear end with pencil is inserted in, the rear end of hand-held pole have one section with the concentric and diameter of centre bore than its big spring eye, in centre bore, be installed with push rod, the front end of push rod has the prominent head of T word to be in the jack, the push rod rear portion is with the compression spring, patch fixedly pressure cap on the rear end of push rod, the two end supports of spring is between spring eye front end and pressure cap.During use, rear end cylindrical or the hexagon pencil stub is inserted in the jack of hand-held pole, pencil stub and hand-held pole link together like this, its length can reach the length of the gripping that needs when normally writing, in the use afterwards, pencil stub continues to be cut weak point, when the outer field wood pen holder of pencil is cut hand-held pole front end jack end, pencil can not continue to use again, if remaining pencil stub is extracted difficulty relatively from jack from front end, promote the pressure cap of putting back-end this moment, pressure cap overcomes spring force and drives the push rod reach, the prominent crown of push rod leading portion is released pencil stub at the rear end face of pencil stub from the hand-held pole jack.After release was added in thrust on the pressure cap, pressure cap drove push rod and turns back to the origin-location under the spring force effect, inserts a short pencil in addition and can continue again to use in jack.Also sell a kind of pencil stub on the market now, it is structure at one section plastic support of the rear end of a bit of pencil-lead parcel, if the jack of this pencil extension bar becomes the size that adapts with plastic support body length and diameter, just can become this written special holder.
Pressure cap can have external diameter than hand-held pole big or little two kinds of designs: the one, there is the diameter endoporus bigger than hand-held pole external diameter the pressure cap front portion, the hand-held pole rear end is inclusive in the endoporus of pressure cap; The 2nd, the diameter of pressure cap is less than hand-held pole spring eye diameter, and the pressure cap front portion is in the spring eye.
The advantage of this pencil extension bar is: can make length too short and pencil stub that be inconvenient to grip continues to use, avoided discarding the waste that causes because of pencil stub, and it be easy to operate simply to turn down pencil stub, overall cost is cheap, and is easy to utilize.
Description of drawings:
Accompanying drawing is the structural representation of the utility model pencil extension bar.
The specific embodiment:
With reference to accompanying drawing, this pencil extension bar has a hand-held pole 3, there is a centre bore at hand-held pole 3 center vertically, the front end of hand-held pole 3 have one section with centre bore jack 5 concentric and that adapt with the pencil shaft external diameter, jack 5 degree of depth are about 1 centimetre, the rear end of hand-held pole 3 have one section with the concentric and diameter of centre bore than its bigger spring eye, in centre bore, be installed with push rod 4, the front end of push rod 4 has the prominent head of T word to be in the jack 5, push rod 4 rear portions are with compression spring 2, patch pressure cap 1 on the rear end of push rod 4, can be fixed together by interference fit between pressure cap 1 and the push rod 4, also can adopt the form that is threaded.The two end supports of spring 2 is between spring eye front end and pressure cap 1, and there is diameter pressure cap 1 front portion than the big slightly endoporus of hand-held pole 3 external diameters, and hand-held pole 3 rear ends are inclusive in the endoporus of pressure cap 1, and jack 5 is used in rear end with pencil is inserted in.On hand-held pole 3 rear portions or pressure cap 1, also can design hanging nose, be convenient to it is hung in clothes or the pocket.
Claims (3)
1, a kind of pencil extension bar, relate to a hand-held pole, it is characterized in that: there is a centre bore at hand-held pole (3) center vertically, the front end of hand-held pole (3) have one section with centre bore jack (5) concentric and that adapt with the pencil shaft external diameter, the rear end of hand-held pole (3) have one section with the concentric and diameter of centre bore than its big spring eye, in centre bore, be installed with push rod (4), the front end of push rod (4) has the prominent head of T word to be in the jack (5), push rod (4) rear portion is with compression spring (2), patch fixedly pressure cap (1) on the rear end of push rod (4), the two end supports of spring (2) is between spring eye front end and pressure cap (1).
2, pencil extension bar according to claim 1 is characterized in that: there is diameter pressure cap (1) front portion than the big endoporus of hand-held pole (4) external diameter, and hand-held pole (4) rear end is inclusive in the endoporus of pressure cap (1).
3, pencil extension bar according to claim 1 is characterized in that: the diameter of pressure cap (1) is less than hand-held pole (3) spring eye diameter, and pressure cap (1) front portion is in the spring eye.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420096798 CN2728780Y (en) | 2004-09-30 | 2004-09-30 | Holder for short pencil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420096798 CN2728780Y (en) | 2004-09-30 | 2004-09-30 | Holder for short pencil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2728780Y true CN2728780Y (en) | 2005-09-28 |
Family
ID=35047560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420096798 Expired - Fee Related CN2728780Y (en) | 2004-09-30 | 2004-09-30 | Holder for short pencil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2728780Y (en) |
-
2004
- 2004-09-30 CN CN 200420096798 patent/CN2728780Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |