CN103619609A - Mechanical pencil - Google Patents

Abstract

The mechanical pencil is provided with: a ball chuck (9) that grips the lead (4); a rotary drive mechanism (29) that when subjected to a retracting motion in the axial direction due to writing pressure on the lead, which is gripped by the ball chuck, and an advancing motion in the axial direction due to release of the writing pressure, rotates a rotator (40) in one direction; and a lead-advancing mechanism, which contains a cam member (8), a holding chuck (6), etc. and which advances the lead when subjected to the rotational force of the rotator in the rotary drive mechanism. The ball chuck, rotary drive mechanism and lead-advancing mechanism are accommodated in a shaft (1, 25).

Description

Propelling pencil

Technical field

The present invention relates to a kind of propelling pencil, can utilize the pressure of writing producing together with action of writing that pen core is progressively emitted.

Background technology

As everyone knows, propelling pencil plays a role in the following manner: by the press section that for example rearward end of subtend beam barrel is outstanding, carry out pressing operation, from being arranged on the nib parts of the leading section side of beam barrel, that pen core is emitted is a certain amount of.That is, because core is accompanied by action of writing, wear and tear, therefore need to described press section, carry out pressing operation every certain action of writing.

In this case, the suitable size of stretching out for the core of emitting by pressing operation, carried out in design various research in the past, and if the discharging amount of the core of realizing by pressing operation is larger, core can have occurred and be subject to writing pressure and the problem such as frequently fracture.

And, if the discharging amount of the core of realizing by pressing operation is less, owing to making core wearing and tearing because of action of writing, therefore need to be at the heavy multiple pressing operation of action of writing intermediate frequency, thus produce the problem of troublesome poeration.

Therefore, proposition has following pipeline slidingtype propelling pencil, in the outstanding action of the pen core producing together with pressing operation, the core guiding piece that is installed on the tubulose of nib parts also advances, core guiding piece also retreats together with being accompanied by the wearing and tearing of the core of writing generation, and this pipeline slidingtype propelling pencil is open in patent documentation 1 and 2.

According to above-mentioned patent documentation 1 and 2 disclosed pipeline slidingtype propelling pencils, by being accompanied by the wearing and tearing of the core of writing generation, the terminal part of duct-like core guiding piece contacts with paper, and described core guiding piece moves to back away.

Thus, even if will set slightly greatly from the outstanding overhang of nib portion by the core of a pressing operation realization, pen core be also protected by duct-like core guiding piece, can reduce the occurrence probability fractureing with the core of writing generation together.

Yet, according at patent documentation 1 and 2 disclosed pipeline slidingtype propelling pencils, because core is followed the wearing and tearing of writing, make to rub such as the end pipeline and the paper that are formed by metal formings such as stainless steels.Therefore, be subject to frictional resistance now, pen sense variation, extreme in the situation that, also can cause the edge part of end pipeline and paper to scratch, the problem that paper is sustained damage.

Therefore, a kind of propelling pencil has been proposed before this case applicant, make described end pipeline be accompanied by by write the core causing wearing and tearing and to move to the mode retreating in nib portion gradually, pen core can be maintained in certain scope from the outstanding overhang of described end pipeline thus, this propelling pencil is open in patent documentation 3.

Prior art document

Patent documentation

Patent documentation 1: Japanese kokai publication hei 8-072473 communique

Patent documentation 2: Japanese kokai publication hei 8-132782 communique

Patent documentation 3: TOHKEMY 2009-233921 communique

Summary of the invention

The problem that invention will solve

According to the disclosed propelling pencil of described patent documentation 3, utilize to be accompanied by and write and put on the pressure of writing of pen core, make the end pipeline that plays a role as core guiding piece to move to the mode retreating in nib portion gradually.Therefore, because being also accompanied by the wearing and tearing of writing generation with core, end pipeline retreats accordingly, thereby, can avoid the action of end pipeline and paper friction, also can eliminate the problem that described core fractures simultaneously.

But, according to the disclosed propelling pencil of patent documentation 3, although end pipeline is also accompanied by the wearing and tearing of writing generation with core and retreats accordingly, but at core, may wear under state to a certain degree and need described press section to carry out pressing operation, utilize this pressing operation so that the mode that described end pipeline is emitted together with described pen core plays a role.

And, because end pipeline when carrying out pressing operation is emitted significantly from nib portion together with pen core at every turn, therefore exist the thoughts and feelings of writing to produce the problem of sense of discomfort.

The present invention just technical background based on described completes, its problem is to provide a kind of propelling pencil, it is characterized in that, pen core is emitted in the wearing and tearing that are accompanied by action of writing generation with core accordingly gradually, it utilizes the action of emitting that pressure is realized this core of writing that pen core is applied, thus, described propelling pencil can keep that pen core stretches out from end pipeline, and to stretch out size roughly certain, or can utilize a pressing operation to continue for a long time to write.

For solving the scheme of problem

The propelling pencil that the present invention who completes in order to solve above-mentioned problem relates to is characterised in that, allow advancing and stoping the ball chuck head retreating of pen core to be incorporated in beam barrel of pen core, described propelling pencil possesses core discharging gear release mechanism, and the caused axial backward movement of pressure of writing that described core discharging gear release mechanism is subject to being subject to by the first described pen core of holding of described ball chuck is forwards emitted described pen core with writing the caused axial forward motion of releasing of pressure.

In this case, in preferred mode, described core discharging gear release mechanism has discharging amount guiding mechanism, and the adjustment of described discharging amount guiding mechanism is write the caused axial backward movement of pressure and write the discharging amount of the described pen core that the caused axial forward motion of releasing of pressure emits by what be subject to by the first described pen core of holding of described ball chuck.

And, preferably, the propelling pencil the present invention relates to is configured to also possesses rotary drive mechanism, the caused axial forward motion of releasing of writing the caused axial backward movement of pressure and writing pressure that described rotary drive mechanism is subject to being subject to by the first pen core of holding of described ball chuck, to a direction rotation, drive rotor, described core discharging gear release mechanism is subject to the rotary driving force of the described rotor in described rotary drive mechanism and forwards emits described pen core.

And preferably, described core discharging gear release mechanism has: cam part, it has on circular end face along the cam surface circumferentially climbing, and between the Origin And Destination of described cam surface, has in the axial direction stage portion, and sliding part, be subject to the rotary driving force of the rotor in described rotary drive mechanism and rotate, and possesses the fitting with the cam surface butt of described cam part in a part, and at axle core, be built-in with the maintenance chuck that keeps pen core with the side face sliding-contact of described pen core, described pen core discharging gear release mechanism moves as follows, the forward motion of described sliding part when the fitting of the described sliding part by the cam surface butt when with described cam part drops to and is formed at axial described stage portion, from described ball chuck head, pull out the maintained pen core with the sliding-contact of described maintenance chuck.

And preferably, the difference of height that described discharging amount guiding mechanism is adjusted described stage portion is adjusted the discharging amount of described pen core.

In this case, preferably, described cam part is that the one party in the starting point side of described cam surface or terminal side is made as to stiff end and the opposing party is made as to free-ended beam shape parts, described discharging amount guiding mechanism has: adjust cam part, it possesses on circular end face along the adjustment cam surface circumferentially climbing; And adjustment fitting, it is configured between described cam part and described adjustment cam part, and with described adjustment cam surface butt, if make described adjustment cam part rotation, moving forward and backward of the described adjustment fitting producing by sliding on described adjustment cam surface according to this rotation, the free end side of described cam part is moved forward and backward, thereby adjust the difference of height of described stage portion.

In another optimal way, described cam part is that the one party in the starting point side of described cam surface or terminal side is made as to stiff end and the opposing party is made as to free-ended beam shape parts, described discharging amount guiding mechanism has the adjustment sliding part that is installed on described cam part, by described adjustment sliding part is moved forward and backward, the free end side of described cam part is moved forward and backward, thereby adjust the difference of height of described stage portion.

And in another optimal way, described discharging amount guiding mechanism is configured to, by the difference of height that more brings the described stage portion of adjustment of described cam part.

In this case, at the leading section of described beam barrel, can load and unload the nib portion that is provided with, described cam part is configured in described nib portion, is configured to and can changes together with this nib portion.

And preferably, first of the described ball chuck that described pen core rotates with being subject to the rotary driving force of the rotor in described rotary drive mechanism is driven in rotation.

In addition, preferably, by being configured in the pressing operation of press section of a part for described beam barrel, described ball chuck head moves forward and backward in the axial direction, by the caused caused releasing effect to pen core that retreats to the effect of controlling of pen core and described ball chuck head of advancing of described ball chuck head, can forwards emit described pen core.

And, preferred described rotary drive mechanism possesses rotor, the first cam forms parts and the second cam forms parts, described rotor forms circular, on its axial end face and other end, form respectively the first cam surface and the second cam surface, and, dispose to be formed on described the first cam with described the first cam surface and the opposed mode of the second cam surface respectively and form the first stationary cam face and the second stationary cam face on parts and the second cam formation parts, by described backward movement of writing the caused described ball chuck head of pressure, the first cam surface of described rotor and described the first stationary cam face butt engagement, by described releasing of writing pressure, the second cam surface of described rotor and described the second stationary cam face butt engagement, under the first cam surface of described rotor-side and the state of described the first stationary cam face engagement, the second cam surface of described rotor-side and described the second stationary cam face are set to, in the axial direction with respect to the staggered relation of phase place of a tooth of cam, under the second cam surface of described rotor-side and the state of described the second stationary cam face engagement, the first cam surface of described rotor-side and described the first stationary cam face are set to, in the axial direction with respect to the staggered relation of phase place of a tooth of cam.

Invention effect

According to the propelling pencil of said structure, the caused axial backward movement of pressure of writing that is subject to being subject to by the first described pen core of holding of ball chuck is forwards emitted described pen core with writing the caused axial forward motion of releasing of pressure.

Therefore, a kind of desirable propelling pencil that approaches can be provided, be accompanied by wearing and tearing that action of writing produces accordingly with core, so that the mode that pen core is progressively released plays a role, can with core be accompanied by write generation wearing and tearing independently, make the pen core that stretches out from end pipeline etc. to stretch out size roughly certain, or can continue for a long time to write by a pressing operation.

And described core discharging gear release mechanism possesses: cam part, its with along the cam surface circumferentially climbing, there is in the axial direction stage portion; Sliding part, it possesses the fitting with the cam surface butt of cam part; And maintenance chuck, it is accommodated in this sliding part, when the fitting that is accompanied by sliding part drops to the stage portion of cam part described in the forward motion of sliding part, by keeping chuck that described pen core is pulled out from ball chuck head.

Thus, the rotary driving force of the rotor in described rotary drive mechanism can be converted to the action of emitting of pen core, can realize the action of emitting of pen core that reliable in action and precision are high.

And first of the described ball chuck that described pen core rotates with being subject to the rotary driving force of the rotor in described rotary drive mechanism is driven in rotation, and thus, is accompanied by action of writing, pen core is progressively rotarilyd actuate.

Thus, can prevent from being accompanied by and write and make pen core partial wear, can eliminate the problem that the rugosity of write line and the concentration of write line significantly change.

And, described core discharging gear release mechanism has the discharging amount guiding mechanism of the discharging amount of adjusting pen core, therefore can from the degree of the wearing and tearing of the different pen cores that cause of the hardness of the pen core 4 of writing pressure and utilizing differing from one another because of user individual etc. accordingly, adjust respectively the discharging amount of pen core 4.Thus, can provide a kind of propelling pencil, it can bring into play the described action effect that continues for a long time to write by pressing operation more significantly.

Accompanying drawing explanation

Fig. 1 is in the first embodiment of the propelling pencil the present invention relates to, and the cutaway view of its first half is shown.

Fig. 2 illustrates its latter half of cutaway view.

Fig. 3 is by the stereogram shown in the first half partly cut-away in the first embodiment.

Fig. 4 is the amplification view that the structure of rotary drive mechanism is shown.

Fig. 5 is the schematic diagram that the rotary actuation effect of rotor that rotary drive mechanism is possessed illustrates in order.

Fig. 6 is that the Fig. 5 that continues illustrates the schematic diagram of the rotary actuation effect of rotor.

Fig. 7 is the stereogram that the core discharging gear release mechanism in the first embodiment is shown.

Fig. 8 is the stereogram that the major part of the core discharging gear release mechanism cam parts shown in Fig. 7 and sliding part is shown.

Fig. 9 is in the second embodiment of the propelling pencil the present invention relates to, and the cutaway view of its first half is shown.

Figure 10 is the schematic diagram that the major part of core discharging gear release mechanism cam parts in the second embodiment and sliding part is shown.

Figure 11 is in the 3rd embodiment of the propelling pencil the present invention relates to, and the cutaway view of its first half is shown.

Figure 12 is by the stereogram shown in the first half partly cut-away in the 3rd embodiment.

Figure 13 is the stereogram that the major part of the core discharging gear release mechanism shown in Figure 11 and discharging amount guiding mechanism is shown.

Figure 14 is in the 4th embodiment of the propelling pencil the present invention relates to, and the cutaway view of its first half is shown.

Figure 15 is in the 4th embodiment of the propelling pencil the present invention relates to, and the cutaway view of another state of its first half is shown.

Figure 16 is in the 5th embodiment of the propelling pencil the present invention relates to, and the cutaway view of its first half is shown.

Figure 17 is in the 5th embodiment of the propelling pencil the present invention relates to, and the cutaway view of another state of its first half is shown.

Figure 18 is by the stereogram shown in the first half partly cut-away in the 5th embodiment.

Figure 19 be illustrate with the rotary actuation effect of rotor independently, the cutaway view of ball chuck head and the non-rotary mechanism of pen core.

Figure 20 be illustrate with the rotary actuation effect of rotor independently, another cutaway view of ball chuck head and the non-rotary mechanism of pen core.

Figure 21 is by the stereogram shown in the first half partly cut-away of the structure shown in Figure 19 and Figure 20.

The specific embodiment

The first embodiment for the propelling pencil the present invention relates to, describes based on accompanying drawing.In addition, in each figure shown below, same section is illustrated with same numeral, but due to the reason of paper, in a part of figure, its representational part is marked with to label, the label of its detailed structure reference mark in other each figure is described respectively.

In Fig. 1 and Fig. 3 of first half that propelling pencil is shown, label 1 is for forming the beam barrel of the profile of propelling pencil, i.e. front axle, and the inner peripheral surface at the leading section of this front axle 1, is provided with nib portion (following, also referred to as nib) 2 by the mode screwing togather loading and unloading.

Described nib portion 2 is configured to and attenuates towards the place ahead internal diameter is stepped, and sliding part 3 has been taken in the mode that can slide and can axial-rotation by portion within it.In addition, described sliding part 3 is also configured to and attenuates towards the place ahead external diameter is stepped, and the terminal part 3a of sliding part 3 forms cylindric, and is contained with the outstanding state in hole that the leading section from described nib portion 2 is tubular and forms.

The end pipeline 5 of guiding pen core 4 is installed at the terminal part 3a of described sliding part 3.And, near described terminal part 3a in the inner space of described sliding part 3, take in the maintenance chuck 6 that is formed with the rubber system of through hole in central authorities, the described through hole of this maintenance chuck 6 and the side face sliding-contact of described pen core 4 and to keep the mode of pen core to play a role temporarily.

In described nib portion 2 slightly by the rear side of described maintenance chuck 6, be provided with and form circular cam part 8, be formed at the fitting 3b of described sliding part 3 in being connected to the state of the cam surface of this cam part 8.In addition, for described cam part 8 and the relation that is formed at the fitting 3b of sliding part 3, based on Fig. 7 and Fig. 8, explain later.

In the inner space of described sliding part 3, dispose the ball chuck head 9(Ball chuck that controls described pen core 4).This ball chuck head 9 is configured to be possessed: securing member 10, and it forms cylindric and possesses inner peripheral surface along with the taper surface expanding towards the place ahead; Clamper main body portion 11, it is accommodated in this securing member 10, form the through hole of described pen core 4, and its terminal part is divided into a plurality of parts vertically along axle core; And a plurality of balls 12, it is configured between the outer peripheral face and the inner peripheral surface of described securing member 10 of described clamper main body portion 11.

In addition, at the inner peripheral surface of the leading section of described securing member 10, embed the stop component 13 that has ring-type, described stop component 13 stops described clamper main body portion 11 to surpass to advance predeterminedly and stop described ball 12 to come off.

Therefore, described pen core 4 is being applied write pressure in the situation that, clamper main body portion 11 and the ball 12 of described ball chuck head 9 are connected to the taper surface in securing member 10 cylindraceous jointly, so pen core 4 is controlled by clamper main body portion 11.Thus, stoped retreating of pen core 4.

On the other hand, in the situation that there is the power that described pen core 4 is forwards pulled out, clamper main body portion 11 is not subject to the effect of described securing member 10, therefore can be relatively not have the mode of resistance that pen core 4 is pulled out to the place ahead.That is, described ball chuck head 9 is to allow advancing and stoping the mode retreating to play a role of described pen core 4.

The reduced diameter of the central portion of the length direction of described clamper main body portion 11, and be configured as large footpath in rearward end.And the large-diameter portion of rear end is configured to and can slides in the axial direction along the rearward end inner peripheral surface of described sliding part 3.

And, to surround the mode of central portion of the length direction of clamper main body portion 11, configure spiral helicine spring 14, the front end of this spring 14 engages with the end difference forming on inner peripheral surface at described securing member 10, and the rear end of spring 14 is in being connected to the state of large-diameter portion of the rear end side of clamper main body portion 11.

Therefore, described spring 14 by axial expand do in order to described clamper main body portion 11 rearward the mode of the application of force play a role, thus, described ball chuck head 9 is in controlling the state of pen core 4.Thereby, for convenient, described spring 14 is become to chuck spring.

In addition, described sliding part 3 is configured to and can slides vertically with respect to the outer peripheral face that forms the securing member 10 of described ball chuck head 9, and the mode that described securing member 10 is embedded in portion's side in its back-end the inner peripheral surface that forms the first relay part 16 cylindraceous is installed.And the mode that described the first relay part 16 is embedded in the substantial middle portion at its length direction the inner peripheral surface that forms the second relay part 17 cylindraceous is installed.

And, at the rearward end inner peripheral surface of the second relay part 17, being connected with the relaying pipeline 18 by the flexible material minor axis shape that for example forming synthetic resin forms, the relaying pipeline 18 of this minor axis shape is connected with rotary drive mechanism described later.

The second described relay part 17 is shaped slightly slightly at its leading section side internal diameter, covers the rearward end of described sliding part 3 in the mode that can slide.And the spatial portion between the leading section of the described intermediate member 17 that is shaped slightly slightly at internal diameter and described the first relay part 16 has been taken in spring 20.

That is, this spring 20 plays a role in the mode that described sliding part 3 is forwards released, so that the fitting 3b of sliding part 3 is connected to the mode of the cam surface of the cam part 8 that forms core discharging gear release mechanism described later, plays a role.For this core discharging gear release mechanism, describe in detail in the back, for convenient, described spring 20 is called to cam butt spring.

On the other hand, in the space of the rearward end side of the first described relay part 16, in the mode that can slide, take in the cylinder 22 of the through hole that possesses pen core 4.The chimeric core shell 23 that is provided with of rearward end at this cylinder 22, be accompanied by the forward motion of the core shell 23 being produced by pressing operation described later, the leading section of described cylinder 22 and described clamper main body portion 11 butts, play a role in the mode that this clamper main body portion 11 is forwards released.Therefore,, for convenient, described cylinder 22 is called to push action cylinder.

In the latter half of structure of the propelling pencil shown in Fig. 2, at the chimeric rear axle 25 that forms beam barrel that is provided with of rearward end of described front axle 1.And, to cover the mode in the outside of rear axle 25, being equipped with the outer shaft 26 that is formed with clamping section 26a, the locating snap ring 27 that this outer shaft 26 is threaded by the rearward end with described rear axle 25 is installed.

In the inner space of described rear axle 25, take in rotary drive mechanism 29.This rotary drive mechanism 29 is by modularization, at this rotary drive mechanism 29, is connected with the rearward end by the relaying pipeline 18 of the minor axis shape of described forming synthetic resin.

And, as shown in Figure 2, described rotary drive mechanism 29 by and the rearward end of front axle 1 between the axle spring 30 of sandwiched rearward push, and be against by the active force of described axle spring 30 the end difference 25a forming by the undergauge in described rear axle 25.Thus, rotary drive mechanism 29 is fixed in rear axle 25.

In addition, structure and effect for described rotary drive mechanism 29, describe in detail in the back based on Fig. 4～Fig. 6.

In the rearward end of described rear axle 25, the mode that can slide with respect to rear axle 25 of usining is provided with the pressing lever 31 as pressing component, the returning spring 32 of the spatial portion configuration pressing lever between rear axle 25 and pressing lever 31.

And, in the ratio central authorities of pressing lever 31, slightly by rearward end, be formed with the wall part 31a of the charging hole that possesses pen core.In addition, in the rearward end of pressing lever 31, in the mode that can load and unload, be equipped with rubber 33, and the side face of the rearward end of pressing lever 31 with the mode that can load and unload be provided with cover rubber 33 press cover 34.

And, in the rearward end of described core shell 23, cylinder part 35 is installed, and action in the following manner: by described pressing lever 34 pressing operations, the wall part 31a of described pressing lever 31 forwards releases cylinder part 35, and therewith together, core shell 23 also advances.

In the structure of described propelling pencil, by carrying out pressing operation to pressing cover 34, as mentioned above, core shell 23 carries out forward motion.Thus, the push action that is arranged on the leading section of core shell 23 is advanced with cylinder 22, and described clamper main body portion 11 is forwards released.

Therewith together, the pen core 4 of being controlled by clamper main body portion 11 also advances, and in the mode that pen core 4 is emitted from end pipeline 5, plays a role.And by the releasing of described pressing operation, pressing lever 31 is retreated and is restored to the state shown in Fig. 2 by the effect of returning spring 32.

Now, described clamper main body portion 11 retreats with the effect of spring 14 by described chuck, and pen core 4 is kept by the described maintenance chuck 6 being accommodated in sliding part 3, therefore, effect as described ball chuck head, pen core 4 is pulled out without resistance from clamper main body portion 11, and maintains the state of emitting from end pipeline 5.Therefore,, while repeating described pressing operation, pen core 4 can both be emitted to scheduled volume at every turn.

And by the described cover 34 of pressing is maintained by the state of depressing, clamper main body portion 11 is outstanding from securing member 10, and controlling of core 4 is disengaged.Under this state, can the pen core of the state of emitting from end pipeline 54 be pushed back with finger tip etc.

In described propelling pencil, as shown in Figure 2, in rear axle 25, taken in rotary drive mechanism 29.

At this rotary drive mechanism 29, possess rotor, and with the described pen core 4 that is subject to being controlled by described ball chuck head 9, be subject to write the axial backward movement that pressure produces and the axial forward motion being produced by the releasing of writing pressure and drive described rotor to play a role to the mode of a direction rotation.

That is, in the situation that described pen core 4 is subject to writing pressure, the clamper main body portion 11 shown in Fig. 1 and Fig. 3 retreats slightly, by ball 12, securing member 10 is also retreated.At described securing member 10, be connected with the first relay part 16, the second relay part 17, relaying pipeline 18, the backward movement and the forward motion (following, to be also referred to as action of giving) that are subject to writing the pen core 4 in the situation of pressure are passed to described rotary drive mechanism 29 via described each parts.

Fig. 4 illustrates the integrally-built figure of described rotary drive mechanism 29 with cutaway view.Described relaying pipeline 18 shown in Fig. 4 is coaxial shape and configures to cover the mode of described core shell 23, this relaying pipeline 18 with by the pen core based on action of writing retreat and forward motion (action of giving) is passed to rotary drive mechanism 29, and the mode that is passed to described ball chuck head 9 and sliding part 3 etc. via described relaying pipeline 18 that rotatablely moves of the rotor in the described rotary drive mechanism 29 producing by described action of giving is moved.

At this rotary drive mechanism 29, possess and form rotor 40 cylindraceous, the leading section of described relaying pipeline 18 rotary drive mechanisms 29 is by the chimeric inner peripheral surface that is incorporated into described rotor 40.

Near the leading section of described rotor 40, form the large diameter part that diameter is slightly thick, at the end face (rear end face) of this large diameter part, form the first cam surface 40a, in the other end of large diameter part (front end face), form the second cam surface 40b.

On the other hand, to cover the mode of the rearward end side of described rotor 40, the first cam formation parts (forming parts also referred to as overhead cam) 41 cylindraceous are arranged to described rotor 40 can rotate, at described overhead cam, form the leading section periphery of parts 41, the second cam cylindraceous forms the chimeric overhead cam that is installed on of parts (forming parts also referred to as lower cam) 42 and forms parts 41.

And, at the front end face with the opposed overhead cam formation of the first cam surface 40a parts 41 of described rotor 40, be formed with stationary cam face (also referred to as the first stationary cam face) 41a.And, at the leading section inner surface that forms parts 42 with the opposed lower cam of the second cam surface 40b of described rotor 40, be formed with stationary cam face (also referred to as the second stationary cam face) 42a.

In addition, the first and second cam surface 40a, 40b and described the first stationary cam face 41a, the relation of the second stationary cam face 42a and mutual effect for forming on described rotor 40, describe in detail in the back based on Fig. 5 and Fig. 6.

As shown in Figure 4, the rearward end side that forms parts 41 at described overhead cam embeds cylinder parts 44, in the rearward end formation of these cylinder parts 44, can insert logical inserting hole 44a for core shell 23.And, in described cylinder parts 44, dispose and form torque arrester 45 cylindric and can be mobile vertically, between the inner peripheral surface front end of this torque arrester 45 and the inner peripheral surface rear end of described cylinder parts 44, be equipped with spiral helicine buffer spring 46.

Described buffer spring 46 with to described torque arrester 45 forwards the mode of the application of force play a role, described rotor 40 is subject to the described torque arrester 45 of this active force and presses and play a role in the mode towards the place ahead.

The central portion of described rotary drive mechanism 29 becomes the spatial portion passing through for core shell 23 and keeps apart with core shell 23, utilizes the modularization with the combination integratedly of each parts shown in described label 40～46.

According to the structure of described rotary drive mechanism 29, at described ball chuck head 9, control under the state of pen core 4, described rotor 40 can rotate via relaying pipeline 18, the second relay part 17 and the first relay part 16 together with ball chuck head 9, sliding part 3 centered by axle core.And, at propelling pencil in the situation that writing beyond state, by the effect of described buffer spring 46 via 45 pairs of rotors 40 of described torque arrester application of force forwards.

On the other hand, in the situation that utilizing propelling pencil to take down notes,, to applying the situation of writing pressure from the outstanding pen core 4 of end pipeline 5, the active force that described ball chuck head 9 overcomes described buffer spring 46 retreats slightly, therewith together, rotor 40 also retreats vertically.Therefore the first cam surface 40a, forming on the rotor 40 shown in Fig. 4 engages with described the first stationary cam face 41a and becomes engagement.

Fig. 5 (A)～(C) and Fig. 6 (D), (E) describe in order to the elemental motion of the rotary drive mechanism 29 by described action drives rotor 40 rotations.

In Fig. 5 and Fig. 6, the schematically illustrated described rotor of label 40, at one end (face of upside in figure), is circular and is formed with along circumferentially forming continuously jagged the first cam surface 40a.And, in the other end of rotor 40 (face of the downside of figure), be similarly circular and be formed with along circumferentially forming continuously jagged the second cam surface 40b.

On the other hand, as shown in Figure 5 and Figure 6, the circular end face that forms parts 41 at overhead cam is also formed with along circumferentially forming continuously jagged the first stationary cam face 41a, and the circular end face that forms parts 42 at lower cam is also formed with along circumferentially forming continuously jagged the second stationary cam face 42a.

And, form at overhead cam the first stationary cam face 41a forming on parts 41,, form jagged each cam surface that circumferentially forms of the second stationary cam face 42a of forming on parts 42 at lower cam, to form its tooth pitch roughly the same each other along the first cam surface 40a, the second cam surface 40b that form on rotor 40.In addition, zero mark that the central portion of the rotor in Fig. 5 and Fig. 6 40 is drawn shows the state in rotary moving of rotor 40.

Fig. 5 (A) shows the relation that the overhead cam of propelling pencil in the situation that writing beyond state forms parts 41, rotor 40, lower cam formation parts 42.Under this state, by means of the active force of the buffer spring 46 shown in Fig. 4, be formed at the second cam surface 40b of rotor 40 and the second stationary cam face 42a side butt that lower cam forms parts 42.

Now, the first cam surface 40a of described rotor 40 sides and described the first stationary cam face 41a are configured in the axial direction the stagger relation of half phase place (half tooth apart from) of a tooth with respect to cam.

Fig. 5 (B) shows the state that by the use of propelling pencil, pen core 4 is applied the initial stage of writing pressure.In this case, via ball chuck head 9 and relaying pipeline 18 etc., rotor 40 makes buffer spring 46 shrink and retreat vertically.Thus, the convex wheel of rotor 40 forms parts 41 side shiftings.

Fig. 5 (C) shows by the use of propelling pencil pen core 4 is applied and writes pressure, rotor 40 and overhead cam form the state of parts 41 side butts, in this case, be formed at the first cam surface 40a of rotor 40 and the first stationary cam face 41a engagement that overhead cam forms parts 41 sides.Thus, rotor 40 is subject to the rotary actuation suitable with half phase place of a tooth of the first cam surface 40a (half tooth apart from).

Under the state shown in this Fig. 5 (C), the second cam surface 40b of described rotor 40 sides and described the second stationary cam face 42a are configured in the axial direction the stagger relation of half phase place (half tooth apart from) of a tooth with respect to cam.

Next, Fig. 6 (D) shows the end of writing of propelling pencil, and to the state of writing the initial stage that pressure is disengaged of pen core 4, in this case, by the effect of described buffer spring 46, rotor 40 advances vertically.Thus, the downward cam of rotor 40 forms parts 42 side shiftings.

And, Fig. 6 (E) shows by the effect of described buffer spring 46, rotor 40 and lower cam form the state of parts 42 side butts, in this case, are formed at the second cam surface 40b of rotor 40 and the second stationary cam face 42a engagement that lower cam forms parts 42 sides.Thus, rotor 40 is subject to the rotary actuation suitable with half phase place of a tooth of the second cam surface 40b (half tooth apart from) again.

Therefore, as shown in zero mark that the central portion of rotor 40 is drawn, be accompanied by the rotor 40 that is subject to writing pressure to axial reciprocating motion, rotor 40 is subject to the rotary actuation suitable with a tooth (tooth pitch) of the first and second cam surface 40a, 40b.

The pen core 4 of being controlled by ball chuck head 9 with the first relay part 16 via described relaying pipeline 18, the second relay part 17 thus, is also rotarilyd actuate together with described sliding part 3.

In addition, in the rotary drive mechanism 29 shown in Fig. 4, the torque arrester 45 cylindraceous that is subject to the active force of spiral helicine buffer spring 46 and rotor 40 is forwards released makes between the front end face of this torque arrester 45 and the rear end face of described rotor 40 to produce and skid, to prevent that the mode that rotatablely moving of described rotor 40 is passed to buffer spring 46 from playing a role.

In other words, by sandwiched torque arrester 45 between described rotor 40 and buffer spring 46, can be by described skidding for preventing that rotatablely moving of described rotor 40 is passed to described buffer spring 46.Thus, produce the back twist (spring torque) of spring 46, can eliminate the problem that the spinning movement of rotor 40 is produced to obstacle and so on.

Then, Fig. 7 and Fig. 8 are for illustrating the structure of core discharging gear release mechanism.This core discharging gear release mechanism is to be subject to the rotary driving force of the rotor 40 of described rotary drive mechanism 29, and the mode that described pen core 4 is forwards emitted plays a role.

In addition, Fig. 7 be by the first half of propelling pencil of state of removing nib portion with the stereogram shown in the state of partly cut-away, Fig. 8 mainly illustrates the stereogram of the relation of cam part and sliding part equally under the state of removing nib portion.

To be enclosed on described sliding part 3 mode of the columned terminal part 3a forming, to form circular cam part 8 and be configured to be accommodated in the state of described nib portion 2.

This cam part 8 is configured to the cam surface 8a possessing as illustrated in fig. 8 on circular end face along circumferentially climbing, and is axially possessing stage portion 8b between the starting point (lower position) of described cam surface 8a and terminal (high position).

That is, described axial stage portion 8b forms the structure that the Origin And Destination of described cam surface 8a is connected.

On the other hand, root at the columned terminal part 3a of forming of described sliding part 3, form vertically outstanding fitting 3b with sliding part 3, fitting 3b is subject to described sliding part 3 and is subject to described cam butt and with the doing the advancing effect of used time of spring 20, becomes the state with the cam surface 8a butt of described cam part 8.

In described structure, the action of giving of the rotor 40 of rotary drive mechanism 29 based on pen core and drive described sliding part 3 to rotate step by step.That is, in the present embodiment, when the preceding mode of terminal part 3a with described sliding part 3 is observed, sliding part 3 is to right rotation.

Thus, the described fitting 3b that is formed at sliding part 3 moves in the mode of the cam surface 8a rise along cam part 8, and therewith together, described sliding part 3 progressively retreats vertically.The pen core 4 of now, being controlled by ball chuck head 9 plays a role in the mode with respect to emitting from end pipeline 5.

And, when the fitting 3b of described sliding part 3 reaches the axial stage portion 8b that is formed at cam part 8, described fitting 3b falls along described stage portion 8b with the effect of spring 20 by cam butt, in this moment, described sliding part 3 is also subject to the forward travel suitable with the difference of height of described stage portion 8b.

Now, the maintenance chuck 6 being accommodated in sliding part 3 advances too, therefore moves in the mode of being pulled out by described ball chuck head 9 with keeping chuck 6 sliding-contacts maintained pen core 4.

By the repetition of above action, be subject in the mode that pen core 4 is progressively emitted from end pipeline 5, playing a role accordingly from the described core discharging gear release mechanism of the revolving force of rotary drive mechanism 29 and the wearing and tearing that pen core 4 is accompanied by action of writing.Thus, can be accompanied by the wearing and tearing of writing independently the stretch out pen core size of stretching out from end pipeline with core and keep roughly certain, the desirable propelling pencil that approaches that the efficiency of writing can not reduce can be provided.

In this case, so that core 4 be accompanied by the degree of the wearing and tearing of writing and the discharging amount of the pen core 4 that described core discharging gear release mechanism is realized roughly consistent mode set, can expect to stretch out size certain desirable action all the time with action of writing independently guarantees that pen core stretches out from end pipeline 5.Yet in the setting of core discharging amount deviation slightly, the discharging amount of core 4 is slightly larger than the wear extent of pen core 4, can cause core 4 to follow action of writing outstanding and the problem that core fractures occurs.

Therefore, preferably the discharging amount of core 4 is set as, with respect to core 4, follows the slightly few degree of wear extent of writing, by setting core discharging amount like this, can provide the propelling pencil that continues for a long time to write by a pressing operation of described pressing lever 34.

In addition, in the present embodiment, be configured to the rotary driving force that is subject to the rotor 40 in described rotary drive mechanism 29, the pen core 4 being kept by ball chuck head 9 is also driven in rotation, therefore can prevent that pen core 4 from partial wear occurring along with writing, can eliminate the rugosity of write line, the problem that the concentration of write line significantly changes.

In addition, in the nib portion (nib) 2 that the mode can load and unload with respect to beam barrel (front axle) 1 that is accommodated in the cam part 8 of described formation core discharging gear release mechanism embodiment shown in the figure is installed, nib 2 is formed with different parts from cam part 8.Yet this cam part 8 also can be shaped by parts integratedly with described written 2.

Like this, no matter to adopt cam part 8 to be accommodated in the former structure in nib 2, or the latter's that nib 2 and cam part 8 are shaped integratedly structure, by prepare the size of the multiple axial stage portion 8b forming on cam part 8, user can select the cam part 8 that described stage portion 8b is different when changing nib 2, thereby can adjust the discharging amount of the pen core of core discharging gear release mechanism.

Utilize this structure, the degree coupling of the wearing and tearing of the hardness of the pen core of writing pressure, use 4 that can differ from one another from user individual etc. different and the pen core that causes, adjusts respectively the discharging amount of pen core 4 by changing nib 2.Thus, can provide a kind of propelling pencil, it can be brought into play more significantly with a pressing operation and make to write described action effect for a long time.

Then, Fig. 9 and Figure 10 show the second embodiment of the propelling pencil the present invention relates to.Fig. 9 illustrates the structure of its first half with cutaway view, to the first embodiment shown in Fig. 1 and Fig. 3 in the suitable part of each several part with same numeral, illustrate, thereby omit its detailed explanation.

In the second embodiment shown in Fig. 9, between sliding part 3 and ball chuck head 9, dispose spring 50.This spring 50 has following function concurrently: the function that sliding part 3 is released towards axial the place ahead; And to the clamper main body portion 11 that forms ball chuck head 9 towards the axial rear application of force to utilize ball chuck head 9 to control the function of pen core 4.That is, what described spring 50 was carried out is to have spring 20 and the action of the effect of spring 14 for chuck for the first embodiment cam butt shown in Fig. 1 and Fig. 3 concurrently, therefore, for convenient, described spring 50 is called to dual-purpose spring 50.

In addition, in this second embodiment, end pipeline 5 is by 51 supportings of pipe-supporting parts, and the parts different by the sliding part 3 from maintenance chuck 6 being accommodated in to axle core segment form.

And, as illustrated with schematic diagram in Figure 10, on sliding part 3, be formed with respect to the main body of sliding part 3 to axially outstanding shaft-like fitting 3b, and the terminal part that is configured to this shaft-like fitting 3b by the effect of described dual-purpose spring 50 with the cam surface 8a butt of cam part 8 in the 2 interior configurations of nib portion.

And, cam part 8 in the second embodiment is configured at circular end face to be possessed along the cam surface 8a circumferentially climbing, and between the starting point (lower position) and terminal (high position) of described cam surface 8a, as shown in label 8c and 8d, possess in the stage portion that is axially divided into two-stage.

; in this second embodiment; by pen core 4, be accompanied by the action of giving of writing; described rotary drive mechanism 29 actions; thus; the shaft-like fitting 3b that is formed at described sliding part 3 falls within stage portion 8c and 8d successively, thereby fitting 3b moves to the mobile mode of starting point (lower position) with the terminal from cam surface 8a (high position).

It is as shown in Fig. 5 (C), under the state of the stationary cam face 41a engagement of the first cam surface 40a of the rotor in rotary drive mechanism and overhead cam formation parts 41 sides, the mode that the fitting 3b of described sliding part 3 falls along stage portion 8c to be subject to the effect of described dual-purpose spring 50 is moved.

Next, as shown in Fig. 6 (E), under the state of the second cam surface 40b of rotor and the stationary cam face 42a engagement of lower cam formation parts 42 sides, the mode that the fitting 3b of described sliding part 3 falls along stage portion 8d to be subject to the effect of described dual-purpose spring 50 is moved.

In addition, when the fitting 3b of described sliding part 3 falls described stage portion 8c and 8d, being disposed at the structure that the maintenance chuck 6 of sliding part 3 moves in the mode of utilizing ball chuck head 9 that pen core 4 is pulled out is identical with described the first embodiment.

Therefore,, in the second embodiment shown in Fig. 9 and Figure 10, also can access the action effect identical with the first embodiment having illustrated.

The cam part 8 of formation core discharging gear release mechanism described above forms stage portion 8b or two-stage stage portion 8c, 8d at the cam surface 8a that is formed at the end face of ring-type around the place place of a week, but described stage portion also can be formed at the place, place of half cycle of end face of ring-type or shorter place, place.

This can take into account the notched cam of described formation rotary drive mechanism 29 the number of teeth, be the rotation stepping amount of notched cam, suitably set its combination.

Then, Figure 11 to Figure 13 shows the 3rd embodiment of the propelling pencil the present invention relates to.Figure 11 shows the structure of its first half with cutaway view, the stereogram shown in Figure 12 Shi Jiangqi first half partly cut-away, and Figure 13 is the stereogram that the major part of the core discharging gear release mechanism shown in Figure 11 and discharging amount guiding mechanism 60 is shown.To with the first embodiment shown in Fig. 1 and Fig. 3 in the suitable part of each several part with same numeral, illustrate, thereby omit its detailed explanation.

In the 3rd embodiment, propelling pencil, by being used in combination at the core discharging gear release mechanism described in the first embodiment and the second embodiment, possesses the discharging amount guiding mechanism 60 that the pen core discharging amount of core discharging gear release mechanism is adjusted.Discharging amount guiding mechanism 60 possesses the adjustment lid 62 of adjusting nib portion 61 with similar but variform adjustment nib portion of nib portion 2 61 and the covering of the first embodiment and the second embodiment.

For adjusting nib portion 61, the difference of the nib portion 2 with the first embodiment and the second embodiment is described.Adjusting nib portion 61, barrel endways and be connected with its rear and be configured as the stage portion between the barrel in large footpath, is formed with the sliding eye 61a of extension vertically.And, adjust nib portion 61 and possess the engaging protrusion 61b that forms ring-type at the described outer peripheral face that is configured as the barrel in large footpath.In addition, engaging protrusion 61b needn't be formed at the complete cycle of outer peripheral face, can be also one or in a plurality of projections that circumferentially equally spaced arrange.

Adjust and cover 62 and at its front end face, form porosely, adjust the barrel of nib portion 61 ends and give prominence to from this hole.Adjustment is covered 62 and is possessed the barrel that is configured as path and the barrel that is configured as large footpath.At the inner peripheral surface of the barrel in large footpath, possess to be arranged to the slot 62a of ring-type with the shape of adjusting the engaging protrusion 61b complementation of nib portion 61.

By adjusting, cover 62 and be covered under the state of adjusting nib portion 61, to adjust between the hole of the front end face that cover 62 and the barrel of adjustment nib portion 61 ends and adjustment is covered between the inner peripheral surface of barrel in 62 large footpath and the outer peripheral face of corresponding adjustment nib portion 61 chimeric compared with loose ground.And, adjust another stage portion butt gently cover 62 rear end face and adjustment nib portion 61.Therefore, adjust and cover 62 and can rotate vertically with respect to adjustment nib portion 61.Adjust cover 62 axial action by the engaging protrusion 61b that adjusts nib portion 61 and adjustment, covered between 62 slot 62a engage limit.

Cover 62 front end inner adjusting, and the mode that is provided with to surround the barrel of adjustment nib portion 61 ends forms circular adjustment cam part 63.Adjustment fitting 66 described later adjusts the state of cam surface 63a butt in the cam surface with this adjustment cam part 63.Adjust cam part 63 possess with the first embodiment and the second embodiment in the similar shape of cam part 8.That is, adjust cam surface 63a and be configured at circular end face along circumferentially climbing, and be configured to possess starting point (lower position) and terminal (high position).

Inner at the front end of adjusting nib portion 61, the mode that is provided with to surround the columned terminal part 3a that is formed at sliding part 3 forms circular cam base member 64.And, at the rear of this cam base member 64, be provided with equally and form circular cam part 65 to surround the mode of the columned terminal part 3a that is formed at sliding part 3.

Cam part 65 possesses cam surface 65a, and forms the structure of the Origin And Destination separation of cam surface 65a, but is not separated to the degree that the rotation of the fitting 3b that hinders sliding part 3 is moved.Cam part 65 is fixing with respect to cam base member 64 via connecting portion 65b near the beginning or end of cam surface 65a or them.Therefore, starting point side or the terminal side of the cam surface 65a of the cam part 65 fixing with respect to cam base member 64 are stiff end, and its opposing party is free end, and so, cam part 65 is beam shape parts.In this embodiment, cam part 65 is fixing with respect to cam base member 64 via connecting portion 65b at the starting point place of cam surface 65a.And cam part 65 is shaped and is formed by flexible material.

The parts that to adjust fitting 66 be elongate, it is by adjusting sliding eye 61a of nib portion 61 and becoming two ends with respect to the state of adjustment cam part 63 and cam part 65 butts at hole or the breach of the part setting of corresponding cam base member 64.That is, adjust one end and the adjustment cam surface 63a butt of adjusting cam part 63 of fitting 66, its other end and cam part 65 with the face of cam surface 65a opposition side and the part butt leaving from stiff end.Adjusting the length of fitting 66 determines as follows: in the situation that adjust fitting 66 in the state with adjusting the starting point butt of cam part 63, as shown in figure 11, make the Origin And Destination of cam surface 65a of cam part 65 in equal height, make cam surface 65a integral body in the same plane.

In the situation that discharging amount guiding mechanism 60 is applied to the first embodiment, utilize cam butt to make the fitting 3b of sliding part 3 and the cam surface 65a butt of cam part 65 with spring 20, to cam part 65 application of force forwards, in the situation that discharging amount guiding mechanism 60 is applied to the second embodiment, utilize dual-purpose spring 50 to make the fitting 3b of sliding part 3 and the cam surface 65a butt of cam part 65, to cam part 65 application of force forwards.Therefore,, by the recuperability of this active force or flexible cam part 65 self, cam part 65 becomes with respect to the state of adjusting fitting 66 butts.

Then, the method for adjustment of the pen core discharging amount of discharging amount guiding mechanism 60 is described.As mentioned above, in the situation that adjust fitting 66 and the state of adjusting the starting point butt of cam part 63, the Origin And Destination of the cam surface 65a of cam part 65 is in equal height, so fitting 3b only rotates at grade along cam surface 65a.Therefore, the action of giving of the pen core that sliding part 3 can be based on not caused by action of writing and retreating vertically, thereby the discharging amount of pen core 4 is zero.

In the present embodiment, for example, with reference to the words of Figure 13, in the situation that control to adjust to cover, in 62, make the terminal part 3a of sliding part 3 see to anticlockwise from the place ahead, the mode that adjustment fitting 66 climbs with the adjustment cam surface 63a along adjusting cam part 63 is moved, therewith together, adjusting fitting 66 progressively retreats vertically.Now, take the stiff end that formed by connecting portion 65b as fulcrum is lifted from below with the cam part 65 of adjusting the other end butt of fitting 66, the mode retreating with free end side is out of shape.Consequently, the such cam surface 65a climbing of cam surface 8a that cam part 65 forms in the first embodiment and the second embodiment.

On the other hand, in 62, make the terminal part 3a of sliding part 3 from the place ahead, see dextrorotary situation controlling to adjust to cover, adjust fitting 66 via utilizing the cam part 65 of spring 20 or dual-purpose spring 50 application of forces or the recuperability of utilizing the elasticity of cam part 65 self to produce for cam butt, to move along the mode of adjusting the adjustment cam surface 63a decline of cam part 63.Consequently, adjusting fitting 66 progressively advances vertically.Now, cam part 65 is the effect with spring 20 or dual-purpose spring 50 by cam butt, or the recuperability of utilizing the elasticity of cam part 65 self to produce, and the stiff end being formed by connecting portion 65b of take is fulcrum, and free end side is advanced.When adjusting, cover 62 continuation to right rotation, while adjusting the starting point of fitting 66 arrival adjustment cam parts 63, as shown in figure 11, cam surface 65a integral body is in the same plane.

On the whole, when cover 62 rotations while making to adjust cam part 63 rotation by making to adjust, move forwards, backwards accordingly with described rotation adjusting the adjustment fitting 66 that cam surface 63a slides.By adjusting moving forward and backward of fitting 66, make the free end side of cam part 65 move forward and backward to adjust the difference of height of the stage portion between the Origin And Destination of cam surface 65a.

In the situation that cam part 65 is in forming the state of the cam surface 65a climbing, the action of giving of the pen core based on being produced by action of writing, sliding part 3 retreats vertically, and the mode of relatively emitting from end pipeline 5 with the pen core 4 of being controlled by ball chuck head 9 plays a role.The relative discharging amount of pen core 4 now by the inclined degree of cam surface 65a, with adjust that cover the axial location of adjustment fitting 66 corresponding to 62 rotation definite.

And, when the fitting 3b of sliding part 3 reaches the terminal of cam surface 65a, fitting 3b by cam butt with the effect of spring 20 or dual-purpose spring 50 along and starting point between stage portion fall, in this moment, sliding part 3 is also subject to the forward travel suitable with the difference of height of described stage portion.Now, the maintenance chuck 6 being accommodated in sliding part 3 advances too, therefore moves in the mode of being pulled out by described ball chuck head 9 with keeping chuck 6 sliding-contacts maintained pen core 4.The discharging amount of pen core 4 now by the difference of height of described stage portion, be the inclined degree of cam surface 65a, in other words with adjust that cover the axial location of adjustment fitting 66 corresponding to 62 rotation definite.

Therefore, by adjustment adjustment, cover 62 position of rotation, can adjust the discharging amount of the pen core 4 in core discharging gear release mechanism.Utilize this structure, the degree coupling of the wearing and tearing of the hardness of the pen core of writing pressure, use 4 that can differ from one another from user individual etc. different and the pen core that causes, adjusts respectively the discharging amount of pen core 4.Thus, can provide a kind of propelling pencil, it can be brought into play more significantly with a pressing operation and make to write described action effect for a long time.

And, according to the discharging amount guiding mechanism 60 of the 3rd embodiment, without the replacing operation of the cam part 8 described in the first embodiment, can utilize the discharging amount of adjusting the easy like this method adjustment of the rotation pen core 4 that covers 62.The maximum discharging amount that can adjust of 60 pairs of pen cores 4 of discharging amount guiding mechanism is determined by the difference of height of adjusting the stage portion between the Origin And Destination of adjustment cam surface 63a of cam part 63.Therefore,, by surpassing conventionally the mode of the described stage portion of the length (highly) of the degree of the wearing and tearing of the pen core 4 of supposition and form and adjust cam part 63 having, can set the discharging amount of the pen core corresponding with all users' hobby 4.Certainly, do not like the user who automatically emits of pen core 4 to make to adjust fitting 66 in the position with adjusting the starting point butt of cam part 63 by making adjustment cover 62 rotations, the discharging amount of pen core 4 is made as to zero.In addition, can be also, so that user can observe the mode of the degree of current discharging amount, cover the scale etc. that 62 outer peripheral face arranges the relative position of rotation of expression adjusting.

Adjust cam part 63 and be accommodated in the illustrated embodiment to adjust and cover in 62, by covering 62 different parts from adjustment, form.Yet this adjustment cam part 63 also can cover 62 with adjustment and is shaped by parts integratedly.Similarly, also can be configured as integratedly parts with cam base member 64 by adjusting nib portion 61, also cam base member 64 and cam part 65 can be configured as to parts integratedly, also cam part 65 and adjustment fitting 66 can be configured as to parts integratedly.And the adjustment cam surface 63a that adjusts cam part 63 needn't form the face of the ring-type of complete cycle scope, also can form the structure of locality.

Then, Figure 14 and Figure 15 show the 4th embodiment of the propelling pencil the present invention relates to.Figure 14 illustrates the structure of its first half with cutaway view, Figure 15 illustrates the structure of its first half with another cutaway view.To with the 3rd embodiment shown in the first embodiment shown in Fig. 1 and Fig. 3 and Figure 11 to Figure 13 in the suitable part of each several part with same numeral, illustrate, thereby omit its detailed explanation.

In the 4th embodiment, propelling pencil, by the use that combines at the core discharging gear release mechanism described in the first embodiment and the second embodiment, possesses the discharging amount guiding mechanism 70 that the pen core discharging amount of core discharging gear release mechanism is adjusted.Discharging amount guiding mechanism 70 possesses the adjustment lid 72 of adjusting nib portion 71 with the similar but variform adjustment nib of discharging amount guiding mechanism 60 portion 71 and the covering of the 3rd embodiment.

The discharging amount guiding mechanism 70 of the 4th embodiment is not adjusted cam part 63.Replace, discharging amount guiding mechanism 70 makes to adjust the difference of height of the stage portion between the Origin And Destination cover cam surface 63a that 72 slips vertically adjust cam part 65, and this point is different from the discharging amount guiding mechanism 60 of the 3rd embodiment.Therefore,, for convenient, described adjustment lid 72 is called and adjusts sliding part 72.

Adjusting nib portion 71, with the adjustment nib portion 61 of the 3rd embodiment similarly, be formed with the sliding eye 71a sliding in inside for adjusting fitting 66.And, with the adjustment nib portion 61 of the 3rd embodiment similarly, adjust nib portion 71 and possess the engaging protrusion 71b that forms ring-type at the outer peripheral face that is configured as the barrel in large footpath.And, in the barrel of adjusting nib portion 61 ends, be provided with engaging projection 71c.And, adjust nib portion 71 and in order to support the outer peripheral face of adjustment sliding part 72, possess the 71d of annular wall portion of the ring-type of forming.In addition, engaging protrusion 71b and engaging projection 71c needn't be formed at the complete cycle of outer peripheral face, can be also one or a plurality of projections of equally spaced arranging on circumferentially.

Adjustment sliding part 72 forms porose at its front end face, the barrel of adjusting nib portion 71 ends is outstanding from this hole.Adjust sliding part 72 and possess the barrel that is configured as path and the barrel that is configured as large footpath.At the inner peripheral surface of the barrel in large footpath, possess a plurality of to be arranged to the slot 72a of ring-type with the shapes of adjusting the engaging protrusion 61b complementation of nib portion 61.

By adjusting sliding part 72, be covered under the state of adjusting nib portion 71, adjust sliding part 72 front end face hole with adjust between the barrel of nib portion 71 ends and the outer peripheral face of the inner peripheral surface of the barrel in the large footpath of adjustment sliding part 72 and corresponding adjustment nib portion 71 between chimeric compared with loose ground.Therefore, adjusting sliding part 72 can slide vertically with respect to adjusting nib portion 71.Adjust sliding part 72 and can adjust by adjusting engaging periodically between the engaging protrusion 71b of nib portion 71 and a plurality of slot 72a of adjustment sliding part 72 with respect to the axial relative position of adjusting nib portion 71.Adjust sliding part 72 and determine by adjusting the edge in hole of front end face of nib portion 71 and the engaging between the engaging projection 71c of adjustment sliding part 72 with respect to the most advanced of adjusting nib portion 71.And maximum going-back position is determined with the butt of adjusting another stage portion of nib portion 71 by the rear end face of adjusting sliding part 72.

Therefore, the maximum discharging amount that can adjust of 70 pairs of pen cores 4 of discharging amount guiding mechanism is determined with respect to the most advanced of adjusting nib portion 71 and the distance between maximum going-back position by adjusting sliding part 72.In addition, can be also, not use engaging protrusion 71b and a plurality of slot 72a, but by described relative position can infinitely being adjusted by adjusting chimeric degree reinforcement between nib portion 71 and adjustment sliding part 72 etc.Thus, can carry out the adjustment of the discharging amount of more refinement.

Adjust fitting 66 by adjusting the sliding eye 71a of nib portion 71 and becoming two ends with respect to the state of adjusting sliding part 72 and cam part 65 butts at hole or the breach of the part setting of corresponding cam base member 64.That is, adjust one end and the leading section inwall butt of adjusting sliding part 72 of fitting 66, its other end and cam part 65 with the face of cam surface 65a opposition side and the part butt leaving from stiff end.Adjusting the length of fitting 66 determines as follows: in the situation that adjusting sliding part 72 in most advanced, as shown in figure 15, make the Origin And Destination of cam surface 65a of cam part 65 in equal height, make cam surface 65a integral body in the same plane.

Then, the method for adjustment of the pen core discharging amount of discharging amount guiding mechanism 70 is described.As mentioned above, in the situation that adjusting sliding part 72 in most advanced, the Origin And Destination of the cam surface 65a of cam part 65 is in equal height, so fitting 3b only rotates at grade along cam surface 65a.Therefore, the action of giving of the pen core that sliding part 3 can be based on not caused by action of writing and retreating vertically, thereby the discharging amount of pen core 4 is zero.

In the present embodiment, adjust sliding part 72 and press it is retreated vertically in the situation that controlling, therewith together, adjusting fitting 66 and also retreat vertically.Now, take the stiff end that formed by connecting portion 65b as fulcrum is lifted from below with the cam part 65 of adjusting the other end butt of fitting 66, the mode retreating with free end side is out of shape.Consequently, cam part 65 forms the cam surface 65a that the cam surface 8a in the first embodiment and the second embodiment climbs like that.

On the other hand, in the situation that carry out tractive so that it advances vertically when controlling adjustment sliding part 72, adjust fitting 66 via utilizing cam butt with the cam part 65 of spring 20 or dual-purpose spring 50 application of forces or utilizing the recuperability of the elasticity generation of cam part 65 self, advance vertically.Now, cam part 65 is the effect with spring 20 or dual-purpose spring 50 by cam butt, or the recuperability of utilizing the elasticity of cam part 65 self to produce, and the stiff end being formed by connecting portion 65b of take is fulcrum, and free end side is advanced.When continuing tractive adjustment sliding part 72 and reaching most advanced, as shown in figure 15, cam surface 65a integral body is in the same plane.

On the whole, when making to adjust sliding part 72 and move forward and backward, adjust fitting 66 and move forward and backward accordingly and move forwards, backwards with this.By adjusting moving forward and backward of fitting 66, make the free end side of cam part 65 move forward and backward to adjust the difference of height of the stage portion between the Origin And Destination of cam surface 65a.Therefore,, in the 4th embodiment shown in Figure 14 and Figure 15, can access the action effect identical with the 3rd embodiment having illustrated.In addition, can be also, so that user can observe the mode of the degree of current discharging amount, the scale of the position that represents relative adjustment sliding part 72 etc. to be set at the outer peripheral face of adjusting sliding part 72.

Adjusting sliding part 72 consists of the parts different from adjusting fitting 66 in the illustrated embodiment.But, also can by parts, be shaped integratedly with adjustment fitting 66 adjusting sliding part 72.Similarly, also cam part 65 and adjustment fitting 66 can be configured as to parts integratedly.

Then, Figure 16 to Figure 18 shows the 5th embodiment of the propelling pencil the present invention relates to.Figure 16 illustrates the structure of its first half with cutaway view, Figure 17 illustrates the structure of its first half with another cutaway view, and Figure 18 Jiang Qi first half partly cut-away also illustrates with stereogram.To with the 3rd embodiment shown in the first embodiment shown in Fig. 1 and Fig. 3 and Figure 11 to Figure 13 in the suitable part of each several part with same numeral, illustrate, thereby omit its detailed explanation.

In the 5th embodiment, propelling pencil, by the use that combines at the core discharging gear release mechanism described in the first embodiment and the second embodiment, possesses the discharging amount guiding mechanism 80 that the pen core discharging amount of core discharging gear release mechanism is adjusted.Discharging amount guiding mechanism 80 possesses the similar but variform adjustment nib of discharging amount guiding mechanism 70 portion 81 and the adjustment sliding part 82 that is installed on adjustment nib portion 81 with the 4th embodiment.

The discharging amount guiding mechanism 80 of the 5th embodiment does not have to adjust and cover 72 and adjustment fitting 66, replace, make to adjust slide the vertically difference of height of the stage portion between the Origin And Destination of the cam surface 65a that directly adjusts cam part 65 of sliding part 82, this point is different from the discharging amount guiding mechanism 70 of the 4th embodiment.

Adjusting nib portion 81, barrel is endways connected with its rear and is configured as the barrel in large footpath, with can access the mode of inner cam part 65 be formed with along long side direction rectangular the adjustment sliding eye 81a that extends.

Be configured, it is installed in the mode that can slide vertically with respect to adjustment nib portion 81 the adjustment sliding eye 81a of adjustment sliding part 82 perforation adjustment nib portions 81.Under the state of installing with respect to adjustment nib portion 81, at the outer surface of adjusting sliding part 82, to avoid the mode that user's finger skids to be provided with a plurality of projections, surface is formed with to the inside and extends and from the supporting member 82a of the face side bearing cam part 65 of the opposition side of cam surface 65a within it.

Adjusting sliding part 82 is limited by the shape of adjusting the adjustment sliding eye 81a of nib portion 81 with respect to most advanced and the maximum going-back position of adjusting nib portion 81.Specifically, determine as follows: in the situation that adjusting sliding part 82 in most advanced, as shown in figure 17, make the Origin And Destination of cam surface 65a of cam part 65 in equal height, make cam surface 65a integral body in the same plane.

Therefore, the maximum discharging amount that can adjust of 80 pairs of pen cores 4 of discharging amount guiding mechanism is for adjusting sliding part 82 with respect to adjusting the most advanced of nib portion 81 and the distance between maximum going-back position.

Then, the method for adjustment of the pen core discharging amount of discharging amount guiding mechanism 80 is described.As mentioned above, in the situation that adjusting sliding part 82 in most advanced, the Origin And Destination of the cam surface 65a of cam part 65 is in equal height, and fitting 3b only rotates at grade along cam surface 65a.Therefore, the action of giving of the pen core that sliding part 3 can be based on not caused by action of writing and retreating vertically, thereby the discharging amount of pen core 4 is zero.

In the present embodiment, in the situation that adjusting sliding part 82 with finger presses and it is retreated vertically, therewith together, when being supported by supporting member 82a, the cam surface 65a of cam part 65 also retreats vertically.Now, cam part 65 be take the stiff end that formed by connecting portion 65b as fulcrum is lifted from below, and the mode retreating with free end side is out of shape.Consequently, cam part 65 forms the cam surface 65a that the cam surface 8a in the first embodiment and the second embodiment climbs like that.

On the other hand, in the situation that it is advanced vertically when adjusting sliding part 82 with finger presses, cam part 65 is the effect with spring 20 or dual-purpose spring 50 by cam butt, or the recuperability that the elasticity of utilizing cam part 65 self produces, the stiff end being formed by connecting portion 65b of take is fulcrum, and free end side is advanced.When making to adjust sliding part 82 and move on and reach most advanced, as shown in figure 17, cam surface 65a integral body is in the same plane.

On the whole, when making to adjust sliding part 82 and move forwards, backwards, the free end side of cam part 65 also moves forward and backward accordingly and moves forward and backward with this, thereby adjusts the difference of height of the stage portion between the Origin And Destination of cam surface 65a.Therefore,, in the 5th embodiment shown in Figure 16 to Figure 18, also can access the action effect identical with the 4th embodiment with the 3rd embodiment having illustrated.In addition, can be also that, so that user can observe the mode of the degree of current discharging amount, near the outer peripheral face adjustment sliding eye 81 of adjusting nib portion 81 arranges the scale of the position that represents relative adjustment sliding part 82 etc.

It is stiff end that described the 3rd embodiment and the 5th embodiment all be take the starting point side of cam surface 65 of cam part 65, can adjust the discharging amount of pen core 4 by terminal rear flank is moved back.Yet, also can be all using the maximal end point side of the cam surface 65a of cam part 65 as stiff end, by making to come in to adjust before starting point side the discharging amount of pen core 4.

The first to the 5th embodiment of the propelling pencil the present invention relates to is configured to, and together with the ball chuck head 9 rotating, drives pen core 4 rotations with the rotary driving force of rotor 40 in being subject to rotary drive mechanism 29.But, certainly, also the core discharging gear release mechanism in these embodiments and discharging amount guiding mechanism can be applied to not rotarily actuate in the propelling pencil of pen core.Below, for the mechanism that does not rotarily actuate the propelling pencil of pen core, the situation of applying the propelling pencil in described the 3rd embodiment of take describes simply as example.Described mechanism is called to non-rotating driving mechanism 90.

Figure 19 to Figure 21 illustrates the non-rotating driving mechanism 90 of the propelling pencil that does not rotarily actuate pen core 4.Figure 19 be illustrate with the rotary actuation effect of rotor 40 independently, the cutaway view of ball chuck head 9 and pen core 4 non-rotary mechanisms, Figure 20 is that Figure 21 is by the stereogram shown in non-rotating driving mechanism 90 first half partly cut-aways with respect to the cutaway view of Figure 19 another cutaway view of 90-degree rotation vertically.To with the 3rd embodiment shown in the first embodiment shown in Fig. 1 and Fig. 3 and Figure 11 to Figure 13 in the suitable part of each several part with same numeral, illustrate, thereby omit its detailed explanation.The propelling pencil with non-rotating driving mechanism 90 is favourable for not liking the user of pen core rotation.

Non-rotating driving mechanism 90 possess from the first relay part 16 of the first embodiment, the second relay part 17 and push action with cylinder 22 similar but shape different the first relay part 91, the second relay part 92 and cylinder 93 for push action respectively.

The first relay part 91 possesses the sliding-contact projection 91a that forms ring-type at its outer peripheral face.And the first relay part 91 is provided with a pair of retaining hole 91b, described retaining hole 91b extends vertically and is configured in and the opposed position of axle core in the barrel of the rear end side of sliding-contact projection 91a.The second relay part 92 within it side face possesses sliding-contact groove 92a, and described sliding-contact groove 92a is positioned at the position corresponding with the sliding-contact projection 91a of the first relay part 91 and is arranged to ring-type with the shape complementary with it.Push action at its outer peripheral face, is provided with a pair of maintenance projection 93a in position corresponding to a pair of retaining hole 91b with the first relay part 91 with cylinder 93.

In the first embodiment, as mentioned above, the first relay part 16 is embedded in and forms the inner peripheral surface of the second relay part 17 cylindraceous and be mounted with the substantial middle portion at its length direction.Therefore the rotatablely moving of relaying pipeline 18, connecting with rotary drive mechanism 29 rotates pen core 4 via the second relay part 17 and the first relay part 16 together with ball chuck head 9, sliding part 3.Yet in non-rotating driving mechanism 90, the first relay part 91 and the second relay part 92 are not chimeric, therefore rotatablely moving of the second relay part 92 can not be passed to the first relay part 91.That is, rotatablely moving of the second relay part 92 absorbed by the slip between its sliding-contact groove 92a and the sliding-contact projection 91a of the first relay part 91, therefore suppressed rotatablely moving of the first relay part 91.

And, exist the possibility of being carried out transferring rotational motion by the friction between sliding-contact projection 91a and sliding-contact groove 92a, but, by push action is configured in a pair of retaining hole 91b of the first relay part 91 with the maintenance projection 93a of cylinder 93, can prevent the transmission rotatablely moving.That is, push action is extended in a pair of retaining hole 91b of the first relay part 91 with the maintenance projection 93a of cylinder 93, although therefore allow the axial sliding motion of cylinder 93 for push action, does not allow around axial rotatablely moving.And push action is adjusted to not the height with the degree of the inner peripheral surface butt of the second relay part 17 with the maintenance projection 93a of cylinder 93.Therefore, push action can not hinder push action by the maintenance projection 93 of cylinder 93 yet.

Label declaration

1: front axle (beam barrel);

2: nib portion (nib);

3: sliding part;

3a: sliding part terminal part;

3b: fitting;

4: pen core;

5: end pipeline;

6: keep chuck;

8: cam part;

8a: cam surface;

8b: stage portion;

8c, 8d: two stage steps portion;

9: ball chuck head;

10: securing member;

11: clamper main body portion;

12: ball;

14: chuck spring;

16: the first relay parts;

17: the second relay parts;

18: relaying pipeline;

20: cam butt spring;

22: push action cylinder;

23: core shell;

25: rear axle (beam barrel);

26: outer shaft;

29: rotary drive mechanism;

30: axle spring;

32: returning spring;

34: pressing lever;

40: rotor;

40a: the first cam surface;

40b: the second cam surface;

41: overhead cam forms parts (the first cam forms parts);

41a: the first stationary cam face;

42: lower cam forms parts (the second cam forms parts);

42a: the second stationary cam face;

44: cylinder parts;

45: torque arrester;

46: buffer spring;

50: dual-purpose spring;

51: pipe-supporting parts.

Claims (according to the modification of the 19th of treaty)

1.(deletes)

After 2.(revises) a kind of propelling pencil, it is characterized in that,

Allow advancing and stoping the ball chuck head retreating of pen core to be incorporated in beam barrel of pen core,

Described propelling pencil possesses core discharging gear release mechanism, the caused axial backward movement of pressure of writing that described core discharging gear release mechanism is subject to being subject to by the first described pen core of holding of described ball chuck is forwards emitted described pen core with writing the caused axial forward motion of releasing of pressure

Described core discharging gear release mechanism has discharging amount guiding mechanism, and the adjustment of described discharging amount guiding mechanism is write the caused axial backward movement of pressure and write the discharging amount of the described pen core that the caused axial forward motion of releasing of pressure emits by what be subject to by the first described pen core of holding of described ball chuck.

After 3.(revises) propelling pencil according to claim 2, it is characterized in that,

This propelling pencil also possesses rotary drive mechanism, the caused axial forward motion of releasing of writing the caused axial backward movement of pressure and writing pressure that described rotary drive mechanism is subject to being subject to by the first pen core of holding of described ball chuck, to a direction rotation, drive rotor

Described core discharging gear release mechanism is subject to the rotary driving force of the described rotor in described rotary drive mechanism and forwards emits described pen core.

4. propelling pencil according to claim 3, is characterized in that,

Described core discharging gear release mechanism has:

Cam part, it has on circular end face along the cam surface circumferentially climbing, and between the Origin And Destination of described cam surface, has in the axial direction stage portion; And

Sliding part, be subject to the rotary driving force of the rotor in described rotary drive mechanism and rotate, and in a part, possess the fitting with the cam surface butt of described cam part, and at axle core, be built-in with the maintenance chuck that keeps pen core with the side face sliding-contact of described pen core

Described pen core discharging gear release mechanism moves as follows, the forward motion of described sliding part when the fitting of the described sliding part by the cam surface butt when with described cam part drops to and is formed at axial described stage portion, pulls out the maintained pen core with the sliding-contact of described maintenance chuck from described ball chuck head.

5. propelling pencil according to claim 4, is characterized in that,

The difference of height that described discharging amount guiding mechanism is adjusted described stage portion is adjusted the discharging amount of described pen core.

6. propelling pencil according to claim 5, is characterized in that,

Described cam part is that the one party in the starting point side of described cam surface or terminal side is made as to stiff end and the opposing party is made as to free-ended beam shape parts,

Described discharging amount guiding mechanism has:

Adjust cam part, it possesses on circular end face along the adjustment cam surface circumferentially climbing; And

Adjust fitting, it is configured between described cam part and described adjustment cam part, and with described adjustment cam surface butt,

If make described adjustment cam part rotation, moving forward and backward of the described adjustment fitting producing by sliding on described adjustment cam surface according to this rotation, the free end side of described cam part is moved forward and backward, thereby adjust the difference of height of described stage portion.

7. propelling pencil according to claim 5, is characterized in that,

Described cam part is that the one party in the starting point side of described cam surface or terminal side is made as to stiff end and the opposing party is made as to free-ended beam shape parts,

Described discharging amount guiding mechanism has the adjustment sliding part that is installed on described cam part,

By described adjustment sliding part is moved forward and backward, the free end side of described cam part is moved forward and backward, thereby adjust the difference of height of described stage portion.

8. propelling pencil according to claim 5, is characterized in that,

Described discharging amount guiding mechanism is configured to, by the difference of height that more brings the described stage portion of adjustment of described cam part.

9. propelling pencil according to claim 8, is characterized in that,

Leading section at described beam barrel can load and unload the nib portion that is provided with, and described cam part is configured in described nib portion, is configured to and can changes together with this nib portion.

10. according to the propelling pencil described in any one in claim 3 to 9, it is characterized in that,

First of the described ball chuck that described pen core rotates with being subject to the rotary driving force of the rotor in described rotary drive mechanism is driven in rotation.

After 11.(revises) according to the propelling pencil described in any one in claim 2 to 10, it is characterized in that,

By being configured in the pressing operation of press section of a part for described beam barrel, described ball chuck head moves forward and backward in the axial direction,

By the caused caused releasing effect to pen core that retreats to the effect of controlling of pen core and described ball chuck head of advancing of described ball chuck head, can forwards emit described pen core.

12. according to the propelling pencil described in any one in claim 3 to 6, it is characterized in that,

Described rotary drive mechanism possesses rotor, the first cam forms parts and the second cam forms parts,

Described rotor forms circular, on its axial end face and other end, forms respectively the first cam surface and the second cam surface,

And, dispose to be formed on described the first cam with described the first cam surface and the opposed mode of the second cam surface respectively and form the first stationary cam face and the second stationary cam face on parts and the second cam formation parts,

By described backward movement of writing the caused described ball chuck head of pressure, the first cam surface of described rotor and described the first stationary cam face butt engagement, by described releasing of writing pressure, the second cam surface of described rotor and described the second stationary cam face butt engagement

Under the first cam surface of described rotor-side and the state of described the first stationary cam face engagement, the second cam surface of described rotor-side and described the second stationary cam face are set to, in the axial direction with respect to the staggered relation of phase place of a tooth of cam, under the second cam surface of described rotor-side and the state of described the second stationary cam face engagement, the first cam surface of described rotor-side and described the first stationary cam face are set to, in the axial direction with respect to the staggered relation of phase place of a tooth of cam.

Claims (12)

1. a propelling pencil, is characterized in that,

Allow advancing and stoping the ball chuck head retreating of pen core to be incorporated in beam barrel of pen core,

Described propelling pencil possesses core discharging gear release mechanism, and the caused axial backward movement of pressure of writing that described core discharging gear release mechanism is subject to being subject to by the first described pen core of holding of described ball chuck is forwards emitted described pen core with writing the caused axial forward motion of releasing of pressure.

2. propelling pencil according to claim 1, is characterized in that,

Described core discharging gear release mechanism has discharging amount guiding mechanism, and the adjustment of described discharging amount guiding mechanism is write the caused axial backward movement of pressure and write the discharging amount of the described pen core that the caused axial forward motion of releasing of pressure emits by what be subject to by the first described pen core of holding of described ball chuck.

3. propelling pencil according to claim 1 and 2, is characterized in that,

This propelling pencil also possesses rotary drive mechanism, the caused axial forward motion of releasing of writing the caused axial backward movement of pressure and writing pressure that described rotary drive mechanism is subject to being subject to by the first pen core of holding of described ball chuck, to a direction rotation, drive rotor

Described core discharging gear release mechanism is subject to the rotary driving force of the described rotor in described rotary drive mechanism and forwards emits described pen core.

4. propelling pencil according to claim 3, is characterized in that,

Described core discharging gear release mechanism has:

Cam part, it has on circular end face along the cam surface circumferentially climbing, and between the Origin And Destination of described cam surface, has in the axial direction stage portion; And

Sliding part, be subject to the rotary driving force of the rotor in described rotary drive mechanism and rotate, and in a part, possess the fitting with the cam surface butt of described cam part, and at axle core, be built-in with the maintenance chuck that keeps pen core with the side face sliding-contact of described pen core

Described pen core discharging gear release mechanism moves as follows, the forward motion of described sliding part when the fitting of the described sliding part by the cam surface butt when with described cam part drops to and is formed at axial described stage portion, pulls out the maintained pen core with the sliding-contact of described maintenance chuck from described ball chuck head.

5. propelling pencil according to claim 4, is characterized in that,

The difference of height that described discharging amount guiding mechanism is adjusted described stage portion is adjusted the discharging amount of described pen core.

6. propelling pencil according to claim 5, is characterized in that,

Described cam part is that the one party in the starting point side of described cam surface or terminal side is made as to stiff end and the opposing party is made as to free-ended beam shape parts,

Described discharging amount guiding mechanism has:

Adjust cam part, it possesses on circular end face along the adjustment cam surface circumferentially climbing; And

Adjust fitting, it is configured between described cam part and described adjustment cam part, and with described adjustment cam surface butt,

If make described adjustment cam part rotation, moving forward and backward of the described adjustment fitting producing by sliding on described adjustment cam surface according to this rotation, the free end side of described cam part is moved forward and backward, thereby adjust the difference of height of described stage portion.

7. propelling pencil according to claim 5, is characterized in that,

Described cam part is that the one party in the starting point side of described cam surface or terminal side is made as to stiff end and the opposing party is made as to free-ended beam shape parts,

Described discharging amount guiding mechanism has the adjustment sliding part that is installed on described cam part,

By described adjustment sliding part is moved forward and backward, the free end side of described cam part is moved forward and backward, thereby adjust the difference of height of described stage portion.

8. propelling pencil according to claim 5, is characterized in that,

Described discharging amount guiding mechanism is configured to, by the difference of height that more brings the described stage portion of adjustment of described cam part.

9. propelling pencil according to claim 8, is characterized in that,

Leading section at described beam barrel can load and unload the nib portion that is provided with, and described cam part is configured in described nib portion, is configured to and can changes together with this nib portion.

10. according to the propelling pencil described in any one in claim 3 to 9, it is characterized in that,

First of the described ball chuck that described pen core rotates with being subject to the rotary driving force of the rotor in described rotary drive mechanism is driven in rotation.

11. according to the propelling pencil described in any one in claim 1 to 10, it is characterized in that,

By being configured in the pressing operation of press section of a part for described beam barrel, described ball chuck head moves forward and backward in the axial direction,

By the caused caused releasing effect to pen core that retreats to the effect of controlling of pen core and described ball chuck head of advancing of described ball chuck head, can forwards emit described pen core.

12. according to the propelling pencil described in any one in claim 3 to 6, it is characterized in that,

Described rotary drive mechanism possesses rotor, the first cam forms parts and the second cam forms parts,

Described rotor forms circular, on its axial end face and other end, forms respectively the first cam surface and the second cam surface,

And, dispose to be formed on described the first cam with described the first cam surface and the opposed mode of the second cam surface respectively and form the first stationary cam face and the second stationary cam face on parts and the second cam formation parts,

By described backward movement of writing the caused described ball chuck head of pressure, the first cam surface of described rotor and described the first stationary cam face butt engagement, by described releasing of writing pressure, the second cam surface of described rotor and described the second stationary cam face butt engagement

Under the first cam surface of described rotor-side and the state of described the first stationary cam face engagement, the second cam surface of described rotor-side and described the second stationary cam face are set to, in the axial direction with respect to the staggered relation of phase place of a tooth of cam, under the second cam surface of described rotor-side and the state of described the second stationary cam face engagement, the first cam surface of described rotor-side and described the first stationary cam face are set to, in the axial direction with respect to the staggered relation of phase place of a tooth of cam.

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