CN202079975U - Telescopic pencil - Google Patents
Telescopic pencil Download PDFInfo
- Publication number
- CN202079975U CN202079975U CN2011202021729U CN201120202172U CN202079975U CN 202079975 U CN202079975 U CN 202079975U CN 2011202021729 U CN2011202021729 U CN 2011202021729U CN 201120202172 U CN201120202172 U CN 201120202172U CN 202079975 U CN202079975 U CN 202079975U
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- CN
- China
- Prior art keywords
- screw rod
- pencil
- penholder
- back seat
- swivel nut
- 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
A telescopic pencil mainly comprises a telescopic pencil body and a pencil lead telescoping device, and the telescopic pencil body comprises a pencil stem and a tip sleeve. The telescopic pencil is characterized in that the pencil lead telescoping device comprises a threaded sleeve, a threaded rod I, a threaded rod II and a rear seat, the pencil stem, the rear seat and the threaded rod II are in cylindrical structures, the threaded sleeve is fixedly arranged inside the pencil stem, threads are arranged on the inner surface and the outer surface of the threaded rod II, and the threaded rod II is arranged in the rear seat in an axially moving and peripherally linkage manner. The outer surface of the threaded rod II is in threaded fit with the threaded sleeve, the rear seat is arranged at the rear end of the pencil stem in an axially positioned and peripherally rotatable manner, and the rear seat is partially exposed outside the tail end of the pencil stem, the threaded rod I is disposed inside the threaded rod II, the outer surface of the threaded rod I is provided with an external thread matched with an internal thread of the threaded rod II, a connection structure matched with a pencil lead is arranged at one end of the threaded rod I towards a pencil head, and the threaded rod I is matched with the pencil stem in an axially movable and peripherally positioned manner. By means of double threaded rod transmission, the telescopic pencil is larger in telescoping distance and more thorough in utilization of pencil leads.
Description
Technical field
The utility model relates to a kind of propelling pencil, particularly a kind of scalable pencil.
Background technology
Existing scalable pencil, generally comprise the main body and the lead for retractable pencil retractor device of propelling pencil, main body includes sharp cover, penholder and erasing rubber, the lead for retractable pencil retractor device is mainly single screw rod governor motion, the collapsing length of this propelling pencil lead for retractable pencil is short, can not effectively utilize lead for retractable pencil, make the utilization rate of lead for retractable pencil low.
Summary of the invention
The utility model provide a kind of flexible distance bigger, use the scalable more completely pencil of lead for retractable pencil.
To achieve these goals, the utility model provides following technical scheme: a kind of scalable pencil, the main body and the lead for retractable pencil retractor device that mainly comprise scalable pencil, the main body of described scalable pencil comprises penholder and point cover, it is characterized in that: described lead for retractable pencil retractor device comprises swivel nut, screw rod I, screw rod II and back seat, described penholder, back seat and screw rod II are tubular structure, described swivel nut fixedly is located at penholder inside, screw rod II inner surface and outer surface are equipped with screw thread, described screw rod II moves axially, circumferentially be arranged in the back seat in linkage, described screw rod II outer surface and described swivel nut threaded engagement, described back seat axial location, circumferential penholder rear end rotationally, and back seat partly is exposed at outside the penholder tail end, described screw rod I is arranged among the screw rod II, the outer surface of described screw rod I is provided with the external screw thread that matches with screw rod II internal thread and cooperates with it, screw rod I is provided with the syndeton that matches with lead for retractable pencil towards an end of nib, and described screw rod I and penholder move axially, circumferentially the location cooperates.
The beneficial effects of the utility model are: by adopting double-screw structure, make flexible distance can reach the twice of screw rod, increased flexible distance, use lead for retractable pencil more thorough.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further specified;
Fig. 1 is the utility model specific embodiment structure cutaway view;
Fig. 2 (a) is the structural representation of screw rod I in the utility model;
Fig. 2 (b) is the A-A cutaway view of screw rod I in the utility model;
Fig. 3 (a) is the structure cutaway view of screw rod II in the utility model;
Fig. 3 (b) is the side view of screw rod II in the utility model;
Fig. 4 (a) is the structure cutaway view of penholder in the utility model;
Fig. 4 (b) is the B-B cutaway view of penholder in the utility model;
Fig. 5 (a) is the structure cutaway view of back seat in the utility model;
Fig. 5 (b) is the C-C cutaway view of back seat in the utility model;
Fig. 6 is the cutaway view of swivel nut in the utility model.
The specific embodiment
With reference to Fig. 1, the scalable pencil of the utility model mainly comprises the main body and the lead for retractable pencil retractor device of scalable pencil; Described main body comprises point cover 2 and penholder 3, described lead for retractable pencil retractor device comprises swivel nut 5, screw rod I 6, screw rod II 7 and back seat 8, with reference to Fig. 3 (a), Fig. 3 (b), Fig. 4 (a), Fig. 4 (b), Fig. 5 (a), 5(b) with the described penholder 3 of Fig. 6, back seat 8 and screw rod II 7 are tubular structure, the middle front part inwall of described penholder 3 is provided with equally distributed raised line, preferred 3 groups of raised lines are evenly distributed on the inwall of middle front part of penholder in the present embodiment, described swivel nut 5 is located at penholder 3 middle parts, cooperate with raised line on the penholder 3 middle front part inwalls by the groove on the outer surface of swivel nut 5, the front end face of described back seat 8 is against swivel nut 5 rear end faces, make swivel nut 5 secure fit at penholder 3 middle parts, screw rod II 7 inner surfaces and outer surface are equipped with screw thread, the internal thread 18 of described external screw thread 16 and swivel nut 5 is threaded engagement mutually, described back seat 8 inner surface axials are provided with some groups of equally distributed raised lines 14, preferred 3 groups of raised lines are evenly distributed on the back base inner surface in the present embodiment, the length of described raised line 14 is decided according to the flexible length situation of lead for retractable pencil, form several grooves between the described raised line 14, be circumferentially with a pair of projection 15 at screw rod II 7 towards an end of a tail, match with the groove that forms between the described raised line 14, described screw rod II 7 is moved axially, circumferentially be arranged in the back seat 8 in linkage, described screw rod II 7 outer surfaces and described swivel nut 5 threaded engagement, the tail end inner surface of described penholder 3 is circumferentially with projection, the bulge loop 12 of selecting for use some projections to arrange continuously and form in the utility model, described back seat 8 outer surfaces are provided with the projection that matches with bulge loop 12, make back seat 8 axial location, circumferentially be arranged on penholder 3 rear ends rotationally, and back seat 8 parts are exposed at penholder 3 tail ends and expose outside the extruding of penholder 3 end sections and penholder end face and cooperate, back seat 8 can not be moved forward, with reference to Fig. 2 (a) and Fig. 2 (b), the outer surface of described screw rod I 6 is provided with external screw thread 19, the internal thread 17 of described external screw thread 19 and screw rod II7 is threaded engagement mutually, the front end of screw rod I6 is provided with the jack that matches with lead for retractable pencil 4 and constitutes lead for retractable pencil 4 syndetons, these lead for retractable pencil 4 syndeton the utility model are selected one section small column for use, this cylinder is tubular structure, described cylindrical outer surface is provided with a pair of projection 13, described projection 13 matches with the groove that penholder 3 inner raised lines 11 form, make screw rod I 6 relatively penholder 3 move axially, circumferentially fixing.
The utility model further is provided with, and is provided with damping 1 in the inside of point cover 2, makes lead for retractable pencil 4 be difficult for skidding off from point cover 2.
The utility model further is provided with again, can be provided with erasing rubber 10 at the tail end of back seat 8, and described erasing rubber 10 is fixed on the back seat 8 by aluminium bag sheet 9.
Operation principle: when rotating back seat 8, swivel nut 5 together rotates with back seat 8, internal thread by swivel nut 5, driving screw rod II 7 rotates, screw rod II 7 relative back seats 8 are moved forward, screw rod II 7 rotates screw rod I 6 relative screw rod II 7 is moved forward, and lead for retractable pencil 4 relative penholders 3 are moved forward, and reverse rotation then makes lead for retractable pencil 4 move backward relative to penholder 3.
Claims (6)
1. scalable pencil, the main body and the lead for retractable pencil retractor device that mainly comprise scalable pencil, the main body of described scalable pencil comprises penholder and point cover, it is characterized in that: described lead for retractable pencil retractor device comprises swivel nut, screw rod I, screw rod II and back seat, described penholder, back seat and screw rod II are tubular structure, described swivel nut fixedly is located at penholder inside, screw rod II inner surface and outer surface are equipped with screw thread, described screw rod II moves axially, circumferentially be arranged in the back seat in linkage, described screw rod II outer surface and described swivel nut threaded engagement, described back seat axial location, circumferential penholder rear end rotationally, and back seat partly is exposed at outside the penholder tail end, described screw rod I is arranged among the screw rod II, the outer surface of described screw rod I is provided with the external screw thread that matches with screw rod II internal thread and cooperates with it, screw rod I is provided with the lead for retractable pencil syndeton that matches with lead for retractable pencil towards an end of nib, and described screw rod I and penholder move axially, circumferentially the location cooperates.
2. scalable pencil according to claim 1, it is characterized in that: the inner surface of described penholder tail end is circumferentially with several projections, described back seat outer surface is provided with the projection that matches with this projection, the described projection formation buckle structure that matches with projection, the tail end of back seat is provided with step and matches with the rear end face of penholder and form the thrust structure, make described back seat axial location, circumferentially be arranged in the penholder rotationally, and back seat partly is exposed at outside the penholder tail end.
3. scalable pencil according to claim 1, it is characterized in that: described back seat inner surface axial is provided with some groups of raised lines, form some groups of grooves between the described raised line, be provided with projection at the end of screw rod II and match, make described screw rod II move axially, circumferentially be arranged in the back seat in linkage with described groove towards a tail.
4. scalable pencil according to claim 1, it is characterized in that: described penholder middle front part inwall is axially arranged with several raised lines, described raised line forms several grooves, on the outer surface of the syndeton of screw rod I, be provided with projection, with the groove fit that described raised line forms, make described screw rod I move axially with penholder, circumferentially locate and cooperate.
5. thoroughly do away with the described scalable pencil of claim 1, it is characterized in that: described point cover inside is provided with damping mechanism.
6. according to claim 2 or 3 or 4 described scalable pencils, it is characterized in that: described swivel nut is located at the penholder middle part, described penholder middle front part inwall is provided with axial raised line, swivel nut is provided with the axial groove that matches with described raised line towards the outer surface of a written end, described groove extends to the middle part of swivel nut towards an end of nib from swivel nut, the groove of swivel nut outer surface matches with axial end ribs, described back seat is plugged in postmedian in the penholder, the front end face of back seat is against the swivel nut rear end face, make swivel nut be fixed on penholder inside, described screw rod II is provided with projection towards an end outer surface of a tail, the groove that forms with back base inner surface raised line matches, described screw rod II is circumferentially linked, the axially movable back seat inside that is located at, the front end face of described screw rod II passes swivel nut and swivel nut threaded engagement, described screw rod I is plugged in the endoporus of screw rod II, and with the internal thread threaded engagement of screw rod II, described screw rod I front end face passes the front end face of screw rod II, the front end face of screw rod I is axially arranged with the jack that matches with lead for retractable pencil and constitutes the lead for retractable pencil syndeton, the front end outer surface of described screw rod I is provided with projection, the groove that forms with the raised line of described penholder middle front part inwall matches, and described screw rod I and penholder are moved axially, circumferentially the location cooperates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202021729U CN202079975U (en) | 2011-06-15 | 2011-06-15 | Telescopic pencil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202021729U CN202079975U (en) | 2011-06-15 | 2011-06-15 | Telescopic pencil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202079975U true CN202079975U (en) | 2011-12-21 |
Family
ID=45340629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202021729U Expired - Fee Related CN202079975U (en) | 2011-06-15 | 2011-06-15 | Telescopic pencil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202079975U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102689546A (en) * | 2012-06-25 | 2012-09-26 | 上海大华文具体育用品厂有限公司 | Large-caliber automatic core pencil |
| CN109878247A (en) * | 2019-04-01 | 2019-06-14 | 武汉中南文化用品有限公司 | A kind of device for storing of deflection type core |
-
2011
- 2011-06-15 CN CN2011202021729U patent/CN202079975U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102689546A (en) * | 2012-06-25 | 2012-09-26 | 上海大华文具体育用品厂有限公司 | Large-caliber automatic core pencil |
| CN109878247A (en) * | 2019-04-01 | 2019-06-14 | 武汉中南文化用品有限公司 | A kind of device for storing of deflection type core |
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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: 20111221 Termination date: 20140615 |
|
| EXPY | Termination of patent right or utility model |