CN2031762U - Front-press type automatic pencil - Google Patents
Front-press type automatic pencil Download PDFInfo
- Publication number
- CN2031762U CN2031762U CN 88201926 CN88201926U CN2031762U CN 2031762 U CN2031762 U CN 2031762U CN 88201926 CN88201926 CN 88201926 CN 88201926 U CN88201926 U CN 88201926U CN 2031762 U CN2031762 U CN 2031762U
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- CN
- China
- Prior art keywords
- spring
- press
- core pipe
- lead
- retaining core
- 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.)
- Withdrawn
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Abstract
The utility model discloses a front-press type automatic pencil which is provided with a dipetalous stamping chuck or an injection molding chuck. The utility model is not provided with a time delayer and has the functions that a lead core is forwards pressed out, is automatically compensated, and is backwards pressed out. Compared with the previous front-press type automatic pencil, the utility model has the advantages of simple structure, favorable automatic writing effect, sensitive front-press lead core, etc.
Description
Press the formula propelling pencil before the invention relates to, belong to the school supply and stationery field.
The present invention in the past before press the formula propelling pencil and substantially form by four parts: 1. before press part; 2. time-delay mechanism; 3. movement collet segment; 4. press part after.Before press the part form by point cover, retaining core pipe, retaining core pipe spring, check ring, damping etc.Wherein, the retaining core pipe initial tension of spring is greater than 10 grams, and the frictional force between damping and lead for retractable pencil is greater than 10 grams, and time-delay mechanism is made up of time-delay body delayer, time-delay cover.Wherein delayer has following several types: flexible member; Rubber parts that coefficient of friction is bigger or working of plastics; Electromagnetic component; The shift fork slide block of different geometries; The revolving body of different geometries.Core section is made up of whole chuck, chuck spring, clamp, ball etc.Its whole chuck is the two deep hole thin-walled bodies of blooming.Under the situation that is not subjected to the constraint of effect of chuck spring force and clamp, magnify by the elasticity that self has; Effect lower chuck at the chuck spring force clamps lead for retractable pencil, produces static clip lead for retractable pencil power.After press part by friction sleeve, after press spring spring housing, back-up ring, connector, storage lead pipe, press first-class the composition.
Press the formula propelling pencil in the past, certain stroke when retaining core pipe, lead for retractable pencil are pressed towards pen synchronously with whole movement in, after self-locking takes place in time-delay mechanism, the function of pressing out lead for retractable pencil before could realizing.When automatically compensation is write,,,, rub bigger with paper so retaining core pipe effect pressure on paper is bigger because of the frictional force between retaining core pipe spring force and damping and lead for retractable pencil is bigger along with the abrasion retaining core pipe of lead for retractable pencil is pressed towards in the pen.
From as can be seen above, press the formula propelling pencil before in the past and have following problem: 1. complex structure, parts are difficult for processing in addition; 2. it is undesirable preceding to press out the lead for retractable pencil effect, because of having only retaining core pipe to be pressed towards in the pen certain stroke rather than arbitrary distance of run just can be sent lead for retractable pencil; 3. the vestige that is produced by retaining core pipe and paper friction when compensation is write automatically is apparent in view, and writing effect is undesirable.
In order to overcome above-mentioned shortcoming, pressing the formula propelling pencil before of the present invention adopts two lobes not have deflection deformation chuck (18), chuck spring (23), retaining core pipe (1), retaining core pipe spring (3), point cover (22) replacement to press whole chuck and the complicated time-delay mechanism in the formula propelling pencil forward, it is easy to process to make it to have parts simple in structure, advantages such as retaining core pipe is pressed towards an interior arbitrary distance of run can both send lead for retractable pencil, and retaining core pipe and paper friction are slight.
Press the formula propelling pencil before of the present invention shown in figure one.Retaining core pipe (1) and damping (21) are compeled to be integrated with extended body, and retaining core pipe can overlap at point in (22) endoporus and slide.Back-up ring (4) compels to synthesize one with point cover (22), and following penholder links with sharp external threading and is one, and ball (19) is in the chuck ball is cheated and roll between clamp (5) internal taper hole.Clamp (5) can move in penholder endoporus and back-up ring (4) endoporus down, and back-up ring (20) compels to be integrated with clamp (5).Friction sleeve (8), storage lead pipe (11) compel to be integrated with connector (15).Spring housing (9) compels to be integrated with back-up ring (6).Following penholder (16) is threaded to one with last penholder (12).In whole system, there are four spring forces: 1. retaining core pipe spring (3) power P
12. chuck spring (23) power P
23. press spring (7) power P after
34. preceding press spring (10) power P
4Five frictional force: the 1. frictional force F between retaining core pipe (1) and the lead for retractable pencil
12. retaining core pipe (1) and point overlap the frictional force F between (22)
2, the frictional force F between 3. damping (21) and the lead for retractable pencil
3, the 4. static friction F between chuck (18) and the lead for retractable pencil
Quiet, the 5. frictional force F between clamp (5) and the friction sleeve (8)
5Frictional force and spring force must satisfy following condition:
P
1＞F
3＞F
Quiet
F
2＞P
1＋F
3＋F
1
P
3＞F
5＞F
3Could realize compensating out automatically lead for retractable pencil, preceding press out lead for retractable pencil, after press out lead for retractable pencil function.
After press out the lead for retractable pencil principle, in the storage lead pipe (11) of emptying, put into 2～3 lead for retractable pencils, hold penholder, pressing press the head (13).Because of having frictional force between friction sleeve (8) and the clamp (5), friction sleeve (8) is being with clamp (5) and whole core section synchronously to bottom offset.After press spring (7) and be compressed.When back-up ring (20) and extended body (2) mutually after touch, friction sleeve (8) is at clamp (5) surface sliding, connector (15) is pushing away chuck (18) and is moving then.Chuck (18) is two lobe forms, no deflection deformation, and the cross section is a rectangle, and afterbody has the inclined-plane, and its length is preferably 5～20mm, and width is preferably 1～2.5mm, and height is preferably 0.9～2mm; Little pore radius is 0.2～0.8mm; Big pore radius is 0.3～0.9mm; Adopt plastics, copper material, steel etc. to make.Chuck spring (23) is compressed thereupon.Chuck spring (23) pretightning force is very little, can satisfy the needs that chuck (18) opens or clamps equally, and chuck (18) produces very little static clip lead for retractable pencil power under the effect of chuck spring force.Its chuck spring wire diameter is 0.1～0.5mm, the number of coils is 20～40 circles, mean diameter of coil 2.6～3.6mm, long 5～the 15mm of spring, adopt the beryllium-bronze silk,, stainless steel wire, carbon spring steel wires make, at this moment, chuck (18) is that fulcrum is under connector (15) conical surface promotes with the inclined-plane initial point, magnify gradually under chuck spring (23) effect, lead for retractable pencil falls in damping (21) hole by the chuck aperture.Cancel pressing power, after press under spring (7) effect, friction sleeve (8) is being with clamp (5) and whole movement to move to the home position.When clamp (5) step and back-up ring (6) mutually after touch, friction sleeve (8) slides along clamp (5) surface and resets, connector (15) leaves chuck (18), under chuck spring (23) effect, chuck (18) drives ball (19) and clamps lead for retractable pencil along clamp (5) conical surface, and whole movement is got back to original position.Reciprocal pressing, lead for retractable pencil is constantly sent.
Automatically compensate out plumbous principle.Under the axial thrust load effect of writing the pressure generation, retaining core pipe (1) is along with the abrasion of lead for retractable pencil are pressed towards in the pen, and retaining core pipe spring (3) is compressed, because the static clip lead for retractable pencil power that chuck produces is very little, so its pretightning force is less thereupon, and keeps P
1＞F
3＞F
QuietThe spring wire diameter is 0.1～0.3mm, and the number of coils is 5～15 circles, and mean diameter of coil is 1.6～3.6mm, and the long 5～15mm of spring adopts beryllium-bronze silk, stainless steel wire, carbon spring steel wires to make.In writing process, the friction insentience of retaining core pipe (1) and paper because the frictional force between retaining core pipe spring (3) pretightning force and damping and lead for retractable pencil is all less.Cancel and write pressure, under retaining core pipe spring (1) effect, retaining core pipe resets with the damping of clamping lead for retractable pencil, and the lead for retractable pencil of abrasion is compensated.
Before press out the lead for retractable pencil principle, pen becomes the α angle when writing with paper, writes pressure and can be decomposed into the power W of dead in line with pen
1With with the power W of the axis normal of pen
2W
1With W
2Exist simultaneously, disappear simultaneously.At W
1Under the effect, paper reacts on retaining core pipe (1) W '
1At W
2Under the effect, paper reacts on retaining core pipe (1) W
2'.As W '
1＞P
1+ F
2+ P
4The time, retaining core pipe (1) along the same core section of point cover (22) endoporus, after press part and be pressed towards in the pen, simultaneously at W '
2Effect retaining core pipe (1) down produces frictional force F with point cover (22)
2, F
2＞P
1+ F
3+ F
1Point cover (22) has replaced the time-delay cover in the general time-delay mechanism; have time-delay and binding, fixing, positioning action; its aperture is generally 0.7～7.5mm; Kong Changwei 1～20mm adopts plastics, copper material to make retaining core pipe (1) and has replaced delayer in the time-delay mechanism in the past, and its internal diameter of effect with time-delay and protection lead for retractable pencil is 0.5～0.7mm; external diameter is 0.8～1.8mm; long 5～10mm adopts stainless steel, plastics to make, and lifts pen, W ' gradually
1＜P
4, whole movement begins to reset because F
2＞P
1+ F
3+ F
1, retaining core pipe (1) is motionless with point cover (22) self-locking.When movement is got back to original position and is sent lead for retractable pencil outside the retaining core pipe, W '
1Disappear W '
2Disappear F thereupon
2Disappear.Under retaining core pipe spring (3) effect, retaining core pipe (1) is got back to original position together with the damping (21) of clamping lead for retractable pencil.Retaining core pipe (1) is pressed towards an interior arbitrary distance of run L, and lead for retractable pencil can be sent the outer L length of retaining core pipe.
Press the formula propelling pencil before of the present invention because to adopt two lobe cross sections be that to replace in the past whole chuck and two lobe cross sections be semicircle chuck for the chuck of rectangle, replaced complicated in the past time-delay mechanism with the friction that produces between retaining core pipe and the point cover, it is simple to make it technology, before press out lead for retractable pencil, to compensate out the lead for retractable pencil effect automatically desirable more, be fit to produce in enormous quantities.
Claims (6)
1, the preceding formula propelling pencil of pressing, it is characterized in that adopting point cover (22) retaining core pipe (1), chuck spring (23), retaining core pipe spring (3), the no independent time-delay mechanism of two lobe chucks (18) before press the formula propelling pencil, replaced general whole chuck and cross section be semicircle two lobe chucks have time-delay mechanism before press the formula propelling pencil, press out before this has lead for retractable pencil, automatically compensate out lead for retractable pencil, after press out lead for retractable pencil function.
2, press the formula propelling pencil according to claims 1 before described, it is characterized in that adopting two lobes not have deflection deformation chuck (18), the cross section is a rectangle, afterbody has the inclined-plane, is connected its specification with check ring (17), long 3～the 25mm that is generally, be preferably 5～20mm, the wide 1～4mm that is generally is preferably 1～2.5mm; Height is generally 0.7～3.5mm, is preferably 0.9～2mm, and little pore radius is generally 0.15～3mm, be preferably 0.2～0.8mm, big pore radius is generally 0.2～4mm, is preferably 0.3～0.9mm, material adopts metal or nonmetal, preferably adopts plastics, copper material, steel etc.
3, press the formula propelling pencil according to claim 1 before described, it is characterized in that the point cover (22) that adopts has replaced the time-delay cover in the general time-delay mechanism, this is simple in structure, has the effect of time-delay, and plays binding, fixing, the effect of location, its aperture size is generally 0.7～7.5mm, Kong Changwei 1～20mm, its material adopts metal or nonmetal, preferably adopts the plastics copper material.
4, press the formula propelling pencil according to claim 1 before described; it is characterized in that the retaining core pipe (1) that adopts produces frictional force with point cover (22) when preceding pressing; this frictional force adds that greater than the retaining core pipe spring force frictional force between damping and the lead for retractable pencil adds the frictional force sum between lead for retractable pencil and the retaining core pipe; effect with delayer in the time-delay mechanism; and have the protection lead for retractable pencil effect; its internal diameter size is 0.5～0.7mm; external diameter is 0.8～1.8mm; length is 5～10mm; its material adopts metal or nonmetal, preferably adopts stainless steel, plastics etc.
5, press the formula propelling pencil according to claim 1 before described, it is characterized in that chuck spring (23) pretightning force that is adopted is very little, can satisfy the needs that chuck (18) opens or clamps equally, its parameter is: spring wire diameter 0.1～0.5mm, the number of coils 20～40, mean diameter of coil 2.6～3.6mm, the long 5～15mm of spring, its material adopts metal or nonmetal, preferably adopts beryllium-bronze silk, stainless steel wire, carbon spring steel wires.
6, press the formula propelling pencil according to claim 1 before described, retaining core pipe spring (3) pretightning force that it is characterized in that described usefulness is very little, retaining core pipe and paper frictional force sensation when making continuous writing, the essential condition that the retaining core pipe initial tension of spring is pressed lead for retractable pencil before being for a short time, its parameter is: spring wire diameter 0.1～0.3mm, the number of coils 5～15, mean diameter of coil 1.6～3.6mm, the long 5～15mm of spring, its material is a metal material or nonmetal, preferably adopt the beryllium-bronze silk, stainless steel wire, carbon spring steel wires.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88201926 CN2031762U (en) | 1988-03-22 | 1988-03-22 | Front-press type automatic pencil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88201926 CN2031762U (en) | 1988-03-22 | 1988-03-22 | Front-press type automatic pencil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2031762U true CN2031762U (en) | 1989-02-01 |
Family
ID=4837032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88201926 Withdrawn CN2031762U (en) | 1988-03-22 | 1988-03-22 | Front-press type automatic pencil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2031762U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102815130A (en) * | 2012-09-11 | 2012-12-12 | 天津市福尔美工贸有限公司 | Propelling pencil with decoring on pressing front end |
| CN108297575A (en) * | 2018-03-27 | 2018-07-20 | 于知菲 | It is a kind of detectable to go out using lead for retractable pencil length and automatically the pencil of lead |
-
1988
- 1988-03-22 CN CN 88201926 patent/CN2031762U/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102815130A (en) * | 2012-09-11 | 2012-12-12 | 天津市福尔美工贸有限公司 | Propelling pencil with decoring on pressing front end |
| CN102815130B (en) * | 2012-09-11 | 2015-01-07 | 张宜德 | Propelling pencil with decoring on pressing front end |
| CN108297575A (en) * | 2018-03-27 | 2018-07-20 | 于知菲 | It is a kind of detectable to go out using lead for retractable pencil length and automatically the pencil of lead |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| 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 |